Table of Contents

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-K

(Mark One)

x

ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the fiscal year ended December 31, 2016

2021

OR

¨

TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from to

Commission File Number: 000-32743

DASAN ZHONE SOLUTIONS,

DZS INC.

(Exact name of registrant as specified in its charter)

Delaware

22-3509099

Delaware22-3509099

(State or other jurisdiction of

incorporation or organization)

(I.R.S. Employer

Identification No.)

7195 Oakport Street
Oakland, California 94621

5700 Tennyson Parkway, Suite 400

Plano, Texas 75024

(Address of principal executive office)

Registrant’s telephone number, including area code: (510) 777-7000

(469) 327-1531

Securities registered pursuant to Section 12(b) of the Exchange Act:

Title of each class

Trading Symbol

Name of each exchange

on which registered

Common Stock, $0.001 Par Value

DZSI

The Nasdaq StockCapital Market LLC

(Title of class)(Name of each exchange on which registered)

Securities registered pursuant to Section 12(g) of the Exchange Act: None

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.    Yes  ¨    No  x

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Exchange Act.    Yes  ¨    No  x

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    Yes  x    No  ¨

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).    Yes  x    No  ¨

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will not be contained, to the best of registrant’s knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K.  ¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act (Check one):

Act:

Large accelerated filer

¨

Accelerated filer

¨

Non-accelerated filer

¨  (Do not check if a smaller reporting company)

Smaller reporting company

x

Emerging growth company

¨

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.    ¨

Indicate by check mark whether the registrant has filed a report on and attestation to its management’s assessment of the effectiveness of its internal control over financial reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by the registered public accounting firm that prepared or issued its audit report.    

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).    Yes  ¨    No  x

As of September 20, 2017,March 4, 2022, there were 16,385,455 27,553,992shares outstanding of the registrant’s common stock, $0.001 par value. As of June 30, 20162021 (the last business day of the registrant’s most recently completed second fiscal quarter), the aggregate market value of the common stock held by non-affiliates of the registrant was approximately $34,173,915.



$353,106,651.

DOCUMENTS INCORPORATED BY REFERENCE

Portions of the registrant's definitive Proxy Statement for its 2022 Annual Meeting of Stockholders are incorporated by reference into Part III where indicated.


TABLE OF CONTENTS

Page

PART I

Item 1.

Business

Page

1

PART I
Item 1.

Item 1A.

8

Item 1B.

20

Item 2.

20

Item 3.

20

Item 4.

21

PART II

Item 5.

22

Item 6.

22

Item 7.

23

Item 7A.

31

Item 8.

32

Item 9.

66

Item 9A.

66

Item 9B.

68

Item 9C.

Disclosure Regarding Foreign Jurisdictions that Prevent Inspections

68

PART III

PART III

Item 10.

69

Item 11.

69

Item 12.

69

Item 13.

69

Item 14.

69

PART IV

Item 15.

70

Item 16.

70

71

74



Forward-looking Statements

This report,Annual Report on Form 10-K, including “Management’s Discussion and Analysis of Financial Condition and Results of Operations,” contains forward-looking statements regarding future events and our future results that are subject to the safe harbors created under the Securities Act of 1933 (the “Securities Act”) and the Securities Exchange Act of 1934 or the Exchange Act.(the “Exchange Act”). These statements are based on current expectations, estimates, forecasts, and projections about the industries in which we operate, and reflect the beliefs and assumptions of our management. management as of the date hereof.

We use words such as “anticipate,” “believe,” “continue,” “could,” “estimate,” “expect,” “forecast,” “goal,” “intend,” “may,” “plan,” “project,” “seek,” “should,” “target,” “will,” “would,” variations of such words, and similar expressions to identify forward-looking statements. In addition, statements that refer to projections of earnings, revenue, costs or other financial items;items in future periods; anticipated growth and trends in our business, industry or key markets; cost synergies, growth opportunities and other potential financial and operating benefits of the Merger (as defined below);our acqusitions; future growth and revenues from our products; our ability to refinance or repayaccess capital to fund our existing indebtedness prior to the applicable maturity date;future operations; future economic conditions and performance; the impact of the global outbreak of COVID-19, also known as the coronavirus; the impact of interest rate and foreign currency fluctations; anticipated performance of products or services; competition; plans, objectives and strategies for future operations;operations, including our pursuit or strategic acquisiitons and our continued investment in research and development; other characterizations of future events or circumstances,circumstances; and all other statements that are not statements of historical fact, are forward-looking statements.statements within the meaning of the Securities Act and the Exchange Act. Although we believe that the assumptions underlying the forward-looking statements are reasonable, we can give no assurance that our expectations will be attained. Readers are cautioned that thesenot to place undue reliance on such forward-looking statements, which are only predictionsbeing made as of the date of this Annual Report on Form 10-K. Except as required by law, we undertake no obligation to update any forward-looking statements, whether as a result of new information, future events or otherwise.

Factors which could have a material adverse effect on our operations and are subjectfuture prospects or which could cause actual results to risks, uncertainties and assumptions that are difficult to predict, including those identified under the headingdiffer materially from our expectations include factors discussed in Part I, Item 1A “Risk Factors” and Part II, Item 7 “Management’s Discussion and Analysis of Financial Condition and Results of Operations” of this Annual Report on Form 10-K, as well as factors described from time to time in Item 1A, elsewhere in this report and our other filingsfuture reports filed with the U.S. Securities and Exchange Commission (the SEC)“SEC”). Therefore, actual results may differ materially and adversely from those expressed in any forward-looking statements. Factors that might cause such a difference include, but are not limited to, our ability to realize the anticipated cost savings, synergies and other benefits of the Merger and any integration risks relating to the Merger, the ability to generate sufficient revenue to achieve or sustain profitability, the ability to raise additional capital to fund existing and future operations or to refinance or repay our existing indebtedness, defects or other performance problems in our products, any economic slowdown in the telecommunications industry that restricts the ability of our customers to purchase our products, commercial acceptance of our products, intense competition in the communications equipment market from large equipment companies as well as private companies with products that address the same networks needs as our products, higher than anticipated expenses that we may incur, any failure to comply with the periodic filing and other requirements of The Nasdaq Stock Market, or Nasdaq, for continued listing, material weaknesses or other deficiencies in our internal control over financial reporting, the initiation of any civil litigation, regulatory proceedings, government enforcement actions or other adverse effects relating to the Audit Committee investigation or errors in the consolidated financial statements of Legacy Zhone (as defined below) and other factors identified elsewhere in this report. We undertake no obligation to revise or update any forward-looking statements for any reason.



PART I


ITEM 1.    

ITEM 1.

BUSINESS

Corporate Information
DASAN Zhone Solutions,

DZS Inc. (DZS, formerly known as Zhone Technologies, Inc.(“DZS” or the “Company,”) was incorporated under the laws of the state of Delaware in June 1999. On September 9, 2016, we acquired Dasan Network Solutions, Inc. (DNS) through the merger of a wholly owned subsidiary of Zhone Technologies, Inc. with and into DNS, with DNS surviving as our wholly owned subsidiary (the Merger). At the effective time of the Merger, all issued and outstanding shares of capital stock of DNS held by its sole shareholder, DASAN Networks, Inc. (DNI), were canceled and converted into the right to receive shares of ourThe Company’s common stock in an amount equal to 58% of the issued and outstanding shares of our common stock immediately following the Merger. In connection with the Merger, Zhone Technologies, Inc. changed its name to DASAN Zhone Solutions, Inc. Our common stock continues to beis traded on The Nasdaq Global Select Market (”Nasdaq") under the Nasdaq Capital Market, and our ticker symbol was changed from "ZHNE" to "DZSI" effective September 12, 2016. “DZSI”. The mailing address of our worldwide headquarters is 7195 Oakport Street, Oakland, California 94621,5700 Tennyson Parkway, Suite 400, Plano, Texas 75024, and our telephone number at that location is (510) 777-7000.

As used in this report, unless(469) 327-1531.

Company Overview

DZS is Enabling a Hyper-Connected World, supporting the context suggests otherwise,transformation of technology providers into experience providers and driving the terms "we," "us" or "our" refernext generation of Broadband Connectivity, Mobile & Optical Edge and Cloud Software solutions. Our next generation fiber broadband platforms enable customers to (i) DNSexpand their services, upgrade their technology and its consolidated subsidiaries for periods through September 8, 2016leverage software to improve their efficiency, insights and (ii) DZScustomer experience.

Our solutions have been deployed by over 750 active customers, including advanced Tier 1, national and its consolidated subsidiaries for periods on or after September 9, 2016, the effective date of the Merger. For periods through September 8, 2016, Zhone Technologies, Inc. is referred to as "Legacy Zhone."

Company Overview
We are a global provider of network access solutions and communications equipment forregional service providerproviders and enterprise networks. customers in more than 100 countries worldwide. Our intelligent-edge solutions are focused on creating significant value for our customers by delivering innovative solutions that empower global communication advancement by shaping the internet connection experience.

We research, develop, test, sell, manufacture and support communications equipmentplatforms in five major areas:the areas of mobile transport and fixed broadband access, Ethernet switching, mobile backhaul, passive optical LAN (POLAN)as discussed below. We have regional development and software defined networks (SDN)support centers around the world to support our customer needs. As of December 31, 2021, we employed over 840 personnel worldwide.

Our Solutions and Platforms

Our solutions and platforms portfolio include products in Broadband Connectivity, Connected Home & Business, Mobile & Optical Edge, and Cloud Software.

Broadband Connectivity. Our DZS Velocity portfolio offers a variety of solutions for carriers and service providers to connect residential and business customers, either using high-speed fiber or leveraging their existing deployed copper networks to offer broadband services to customer premises. Once our broadband access products are deployed, the service provider can offer voice, high-definition and ultra-high-definition video, highspeed internet access and business class services to their customers. In addition, the switching and routing products we provide in this space offer a high-performance and manageable solution that bridges the gap from carrier access technologies to the core network. XCelerate by DZS increases the velocity with which service providers can leap to multi-gigabit services at scale by enabling rapid transition from Gigabit Ethernet Passive Optical Network (“GPON”) to 10 Gigabit Symmetrical Passive Optical Network (“XGS-PON”) and Gigabit Ethernet to 10 Gigabit Ethernet via any service port across a range of existing DZS Velocity chassis and 10 gig optimized stackable fixed form factor units.

Connected Home & Business. Our DZS Helix connected premises product portfolio offer a large collection of smart gateway platforms for any fiber to the “x” (“FTTx”) deployment. DZS Smart Gateway platforms are designed for high bandwidth services being deployed to the home or business. Our connected premises portfolio consists of indoor/outdoor optical network terminal (“ONT”) gateways delivering best-in-class data throughout to support the most demanding FTTx applications. The product feature set gives service providers an elegant migration path from legacy to softswitch architectures without replacing ONTs.


Mobile & Optical Edge. Our DZS Chronos portfolio provides a robust, manageable and scalable solution for mobile operators that enable them to upgrade their mobile fronthaul/midhaul/backhaul (“xHaul”) systems and migrate to fifth generation wireless technologies (“5G”) and beyond. DZS Chronos provides a full range of 5G-ready xHaul solutions that are open, software-defined, and field proven. Our mobile xHaul products may be collocated at the radio access node base station and can aggregate multiple radio access node base stations into a single backhaul for delivery of mobile traffic to the radio access node network controller. Our products support pure Ethernet switching as well as layer 3 IP and Multiprotocol Label Switching (“MPLS”), and we interoperate with other vendors in these networks.

Cloud Software. Our DZS Cloud solution accelerates our software capabilities specifically in the areas of network orchestration, application slicing, automation, analytics, and service assurance. We offer a commercial, carrier-grade network-slicing enabled orchestration platform complementing our position with physical network devices supporting Open RAN (“O-RAN”) and 4G/5G networks. Communications service providers are implementing software defined networking (“SDN”) and network functions virtualization (“NFV”) architectures to reduce reliance on proprietary systems and hardware, which increase service agility, flexibility, and deployment of new network services while lowering costs.

Industry Background

We research, developbelieve that expansion in our worldwide business is driven by the increased demand of subscribers and test products and technologies for our customers to purchase and deploy in their networks. We have development and test capabilities in five countries around the world. We are a global company with over 1,000 customers in more than 50 countries worldwide. We use a combination of both in-house and outsourced manufacturing of our products.

Broadband Access
Our broadband access products offer a variety of options for carriers andcloud service providers to connect residential and business customers. Our solutions allow carriers and service providers to either use high-speed fiber or leverage their existing deployed copper networks to offer broadband services to customer premises. Once our broadband access products are deployed, the service provider can offer voice, high-definition and ultra-high-definition video, high-speed internet access and business class services to their customers. We develop our broadband access products for all aspects of carrier and service provider access networks: customer premise equipment (such as digital subscriber line (DSL) modems), Ethernet access demarcation devices, Gigabit passive optical network (GPON) and Gigabit Ethernet passive optical network (GEPON) optical network terminals (ONTs). We also develop central office products, such as broadband loop carriers for DSL and voice-grade telephone service (POTS), high-speed digital subscriber line access multiplexers (DSLAMs) with G.fast and very-high-bit-rate DSL (VDSL) capabilities, optical line terminals (OLTs) for passive optical distribution networks like GPON and GEPON as well as point-to-point Ethernet service for 1 Gigabit to 10 Gigabit access. Both DNS and Legacy Zhone were market leaders in the broadband access market prior to the Merger, and the combination of DNS and Legacy Zhone is expected to enhance our leadership position for both carrier and enterprise solutions in this market following the Merger.
Ethernet Switching
Our Ethernet switching products provide a high-performance and manageable solution that bridges the gap from carrier access technologies to the core network. Over the past ten years carriers have migrated access infrastructure to Ethernet from time-division multiplexing and asynchronous transfer mode systems. Our products can also be deployed in data centers, blurring the line between central office and data center. Our products support pure Ethernet switching as well as layer 3 IP and MPLS capabilities, and are currently being developed for interfacing with SDNs. Legacy Zhone did not offer comparable Ethernet switching products prior to the Merger, and therefore the Ethernet switching market is expected to provide an opportunity for growth for the combined company following the Merger.
Mobile Backhaul
Our mobile backhaul products provide a robust, manageable and scalable solution for mobile operators that enable them to upgrade their mobile backhaul systems and migrate from 3G networks to LTE and beyond. We provide our mobile backhaul products to mobile operators or carriers who provide the transport for mobile operators. Our mobile backhaul products may be collocated at the radio access node (RAN) base station (BS) and can aggregate multiple RAN BS in to a single backhaul for delivery of mobile traffic to the RAN network controller. We provide standard Ethernet/IP or multiprotocol label switching (MPLS) interfaces and interoperate with other vendors in these networks. With mobile backhaul networks providing carriers with significant revenue growth in recent years, mobile backhaul has become one of the most important parts of their networks. Legacy Zhone did not offer comparable mobile backhaul products prior to the Merger, and therefore the mobile backhaul market is expected to provide an opportunity for growth for the combined company following the Merger.
Passive Optical LAN
Our FiberLAN portfolio of POLAN products are designed for enterprise, campus, hospitality, and entertainment arena usage. Our FiberLAN portfolio includes our high-performance, high-bandwidth GPON OLTs connected to the industry’s most diverse ONT product line, which include units with integrated Power over Ethernet (PoE) to power a wide range of devices such as our full range of WIFI access points (APs) and scalable WIFI AP controller. Our environmentally friendly FiberLAN POLAN solutions are one of the most cost effective LAN technologies that can be deployed, allowing network managers to deploy a future proof, low-maintenance, manageable solution that requires less space, air conditioning, copper and electricity than other alternatives. Our FiberLAN portfolio relates primarily to Legacy Zhone products, while our WIFI access points and controllers consist primarily of DNS products. We expect the combination of Legacy Zhone and DNS products in this market to enhance the functionality of our product offerings and provide an opportunity for growth for the combined company following the Merger.
Software Defined Networks
Our SDN and network function virtualization (NFV) tools and building blocks to allow service providers to migrate their networks’ full complement of legacy control plane and data plane devices to a centralized intelligent controller that can reconfigure the services of the hundreds of network elements in real time for more controlled and efficient provision of bandwidth and latency across the network. This move to SDN and NFV provides better service for end customers and a more

efficient and cost-effective use of hardware resources for service providers. We leverage our broadband access, mobile backhaul and Ethernet switching expertise to extract and virtualize many of the traditional legacy control and data plane functions to allow them to be run from the cloud. The latest evolution of our hardware-based solution was designed to support SDN and NFV. Our SDN and NFV tools reflect the combined experience and technologies of DNS and Legacy Zhone.
Industry Background
We believe growth in our business in the coming years will be driven by continued growth in worldwide demand forfixed network access solutions and communications equipment that enable or support access to high-speed broadband services. The communications industry continueshigher speed bandwidth access to experience rapid expansion with the internetinternet.

Furthermore, increased competition between service providers for subscriber business has resulted in significant investment pressure to upgrade network infrastructure to meet growing bandwidth needs. Broadband access networks must be multiservice in nature and proliferationmust have extensive quality of bandwidth-intensive applicationsservice guarantees in order to support 5G, mobile xHaul, symmetric business services and residential services, leading to increasing demandsas well as virtual overlay networks for high-bandwidth communications networks. The broad adoption of new technologies such as smartphones, digital video camerasalternative operators and high definition and ultra high definition televisions allow music, pictures, user-generated content (as found on the many video-sharing sites) and high definition video to be a growing part of consumers’ regular exchange of information. wholesale access.

In recent years, the growth of social communications and social networking has continued to placeplaced significant demands on existinglegacy access infrastructure, which was exacerbated in 2020 by the global COVID-19 pandemic which drove a dramatic rise in remote work and new consumer demands arelearning as well as entertainment streaming. This increased demand has been challenging for the industry, even for the newest and most advanced infrastructures.providers. Increased subscriber usage of smartphone, video streaming services, PC gaming services and high definition and ultra-high-definition televisions has increased the network throughput demand driven by music, pictures, user-generated content (as found on many video-sharing sites) and high-definition video, which have all become a growing part of subscribers’ regular exchange of information.

Trends such as software-as-a-service (SaaS), Cloud-based services, Internet of Things (IoT), and 5G have also increased the demand for broadband network access and customer premises solutions. All of these new technologies share a common dependency on high-bandwidth communication networks and sophisticated traffic management tools. However, network service providers have struggled to meet the increased demand for high-speed broadband access due to the cost of network infrastructure upgrades. As bandwidth demands continue to increase, carriers need to continue to upgrade their network infrastructure to support such demand. The infrastructure upgrade cycle typically has the effect of moving bandwidth bottlenecks from one part of the network to another (such as a carrier’s access network, core network or datacenters)data centers), depending on the selection of technology selection and cost.

costs.

It is widely believedacknowledged in the industry that a fiber-optic connection that runs from customers’ premises all the way to the carrier’s datacentersbroadband access network is the bestpreferred network architecture for a broadband fixed network. This network architecture is commonly called Fiber to the Premises (FTTP). However, FTTP is also typically the most expensive network solution, due to the associated build-out and equipment cost. Although many carriers have, to different degrees, adopted FTTP as their primary network architecture, many limit their use of FTTP to new greenfield builds and rely on hybrid fiber-copper topologies in their existing network in order to reduce cost. For example, popular and less costly alternatives to FTTP include Fiber to the Curb (FTTC)(“FTTP”) for business subscribers or Fiber to the Home (“FTTH”) for residential subscribers. With FTTH, all services are generally delivered at the premise through smart optical networking terminal units (“ONT”). The Fiber to the Node (FTTN) network architecture. In these architectures,(“FTTN”) architecture is also deployed where the carrier lays a fiber-optic cable toterminates at a street cabinet and then uses DSLAMswhich contains a Digital Subscriber Line Access Multiplexer (“DSLAM”) or Multiple Service Access Node (MSAN) to provide(“MSAN”) that then provides higher speed services to their customers over the last mile legacy copper wire. Another trend in network access iswireline infrastructure. With the shift away from the legacy copper telephone Time-division Multiplexing (“TDM”) switches (used in carrier networks from the 1980’s to the early 2000’s):, many carriers that continue to provide services over copper wirewireline networks are decommissioning their legacy telephone switches and moving services over to Voice over Internet Protocol (VoIP)(“VoIP”) platforms onvia an MSAN.MSAN/Softswitch solution. Our broadband access products and solutions are designed to address all these market trendsfiber configurations, commonly referred to as FTTx, by allowing carriers and service providers to either use fiber-optic networks or leverage their existing deployed copper networks to offer broadband services to customer premises. The demand for FTTx is also driven by various government sponsored broadband stimulus funding programs. These initiatives cultivate broadband opportunities around the world. Several of the most prominent initiatives are in North America, including American Rescue Plan Act (ARPA), the CARES Act, the Consolidated Appropriations Act, the Rural Digital Opportunity Fund (RDOF) and the Infrastructure Investment and Jobs Act most recently signed into law by President Biden in November 2021. Global government sponsored broadband stimulus initiatives are less commonly known, though equally important in their contributions to the investment in fiber-optic broadband access network. We are benefitting from several customers that have accelerated their network investment because of government broadband stimulus programs.


With respect to mobile wireless networks, the popularity of mobile smartphones and increasing demand for mobile data has forced mobile network operators to upgrade their mobile access technologies from 3rd generation wireless (3G)(“3G”) to 4th generation wireless (4G(“4G” or LTE)“LTE”) and to plan for 5th generation wireless technologies (5G).5G. These technology upgrades are typically accompanied by network infrastructure upgrades, including upgrades to the carriers’ access networks (referred to as mobile backhaul)“mobile xHaul”), core networks and datacenters.data centers. Our mobile backhaulxHaul products, which have features for time sensitive networks, provide a robust, manageable and scalable solution for mobile network operators that enable them to upgrade their mobile fronthaul/backhaul systems and migrate from 3G networks to LTE4G and beyond.

5G.

Another growing industry trend is the desire of carriers and service providers to simplify network operation and reduce costs. Increasingly, we see network operators seeking to reduce the number of active components in their networks and to centralize network data and control in datacenters,data centers, both of which require network redesigns and upgrades. Our FiberLAN portfolio of POLANPassive Optical LAN (“POL”) products, as well as our Ethernet switching products and SDN and NFV tools and building blocks, are designed to address these market trends, with POLANPOL emerging as a popular customer choice for network upgrades.

The DZS

Our Strategy

Our business strategy is

We strive to be a leading global provider of network access solutionsbalance growth with financial discipline that specifically focuses on improving product margins, increasing recurring software and communications equipment.service revenue, and managing expenses to drive profitability. The principal elements of our strategy include:

Global Presence. We have a diversified customer base that includes more than 750 active customers in more than 100 countries worldwide. We provide our network access solutions to Tier 1, national, and regional carriers in the Asia-Pacific region, the Middle East region and Europe, as well as in North America and Latin America. We leverage our global infrastructure, which includes sales offices all over the world, research and development centers in the United States of America (“United States” or “U.S.”), the Republic of Korea (“South Korea”), Vietnam, India, and Canada and inhouse and contract manufacturing capabilities in the United States, South Korea, Vietnam, and China, to support our customer base.

Leading FTTx Market Position. We hold a strong leadership position in the FTTx network access space. We offer customers an extensive choice of indoor and outdoor fiber demarcation and fully integrated smart gateways with telephone data, Power over Ethernet (“POE”), Wi-Fi and over-the-top set-top box (“OTT STB”) capabilities and other service interfaces. In the FTTx optical line terminal (“OLT”) category, we offer the industry’s largest portfolio of modular chassis, single platforms, and software for deployment in datacenter, central office, extended temperature environments and multi-dwelling unit (“MDU”) scenarios.

Leverage Growth Opportunities from Merger.

Technology Leadership. We believe that our future success is built upon our investment in the development of advanced communications technologies. We continue to focus on research and development to maintain our leadership position in broadband network access solutions and communications equipment. These development efforts include innovating around 5G mobile xHaul technology in collaboration with our leading Tier 1 carriers, developing a new generation of SDN/NFV solutions for unified wired and wireless networks, upgrading our broadband access technology for 10 and 25/50/100 gigabyte access speeds, and introducing our cloud managed Wi-Fi solutions and data analytics offerings.We also continue to expand and differentiate our portfolio through software investments in network orchestration, automation and slicing, a unified operating system and a subscriber experience software-as-a-service (SaaS) platform. Our software expansion and vision are designed to improve our long-term margin profile while differentiating DZS in the marketplace.

Strategic Mergers and Acquisitions. In addition to organic growth, we may from time to time seek to expand our operations and capabilities through strategic acquisitions.  

On March 3, 2021, the expanded geographic reachCompany acquired substantially all of the combinedassets of RIFT, Inc., a network automation solutions company, and all the enhanced functionalityoutstanding shares of RIFT.IO India Private Limited, a wholly owned subsidiary of RIFT, Inc. (collectively “RIFT”). RIFT developed a carrier-grade software platform that simplifies the deployment of any slice, service, or application on any cloud.

On February 5, 2021, we acquired Optelian Access Networks Corporation (“Optelian”), a leading optical networking solution provider based in Ottawa, Ontario, Canada, and rangeits portfolio of our product offerings followingoptical transport solutions. This acquisition introduced the Merger represent attractive opportunities for growth in our business. Prior“O-Series” to the Merger, DNS provided communications equipment primarilyDZS portfolio of carrier grade optical networking products with 100 gigabits per second and above capability, expanding DZS product portfolios by providing environmentally hardened, high capacity, and flexible solutions at the network edge.

On January 3, 2019, we acquired Keymile to expand our business efforts in the Asia-Pacific region with a particular focusEMEA. The acquired Multi-service Access Nodes (MSAN) portfolio complemented the DZS existing portfolio by offering leading class point-to-point active FTTx Ethernet and copper-based access technology based on Korea, Japan and Vietnam, and Legacy Zhone provided communications equipment primarily in the Americas and EMEA region. DNS and Legacy Zhone had complementary product portfolios prior to the Merger, with both DNS and Legacy Zhone offering broadband access solutions and

G. Fast technology as well as VoIP gateway features. 


related products.

Ecosystem Partners. We believe there is further opportunity to grow sales through our channel partners, particularly with distributors, value-added resellers, system integrators, as well as with municipalities and government organizations. We have a track record of building a diverse but targeted network of partners to help drive growth in specific segments of our business or in specific geographies. For FiberLAN, we are working with distributors, value added resellers, and system integrators to broaden our enterprise go to market presence. In India, we are working closely with municipalities to deploy their initial fiber-to-the-home vision and help deliver high speed broadband access to residents. 

Customers

We expect the combination of DNS and Legacy Zhone products will enhance the functionality and range of our product offerings and create increased sales opportunities worldwide.

Drive Cost Efficiencies through Integration of DNS and Legacy Zhone Operations. We intend to continue to drive cost efficiencies in our business through continuing efforts to integrate the DNS and Legacy Zhone global operations, with a view to creating a single efficient global engineering and support organization to support all customers of the combined company worldwide. We also expect to drive further cost efficiencies through product cost reductions and manufacturing economies of scale resulting from the Merger.
Maintain Focus on Technology Leadership. We believe that our future success is built upon our investment in the development of advanced communications technologies. We intend to continue to focus on research and development to maintain our leadership position in network access solutions and communications equipment.
Customers
For our core business, wegenerally sell our products and services directly to carriers and service providers that offer voice, data and video services to businesses, governments, utilities and residential consumers.subscribers. Our global customer base includes regional, national and international carriers and service providers. To date, our products have been deployed by over 1,000hundreds of carriers and service providers worldwide.
For our FiberLAN business, we

We also sell our POLAN solutions directly andindirectly to end customers through system integrators and distributors to the service providers, hospitality, education, stadiums, manufacturing and business enterprises as well as to the government and military. Our global FiberLAN customer base includes hotels, universities, sports arenas, military bases, government institutions, manufacturing facilities and Fortune 500 businesses.

For the year ended December 31, 2016, three2021, two customers SK Broadband, Inc., DNIrepresented 19% and LG Uplus Corp. represented 16%, 14% and 10%12% of net revenue, respectively. For the year ended December 31, 2015, four2020, two customers KT Corporation, LG Uplus Corp., DNI (a related-party)represented 14% and SK Broadband, Inc., represented 26%, 21%, 17% and 10%13% of net revenue, respectively. For the year ended December 31, 2014, four customers, KT Corporation, LG Uplus Corp., SK Broadband, Inc. and DNI (a related-party) represented 17%, 14%, 13% and 12% of net revenue, respectively. No other customers accounted for 10% or more of net revenue during these periods.

respectively

Research and Development

The industry in which we compete is subject to rapid technological developments, evolving industry standards, changes in customer requirements, and continuing developments in communications service offerings. Our continuing ability to adapt to these changes, and to develop new and enhanced products, is a significant factor in maintaining or improving our competitive position and our prospects for growth. Therefore, we continue to make significant investments in product development.

We have core research and product development facilities at our headquarters in Oakland, California, as well as in research and product development centersteams located in Seminole, Floridathe United States, South Korea, Vietnam, India and Alpharetta, Georgia, and in Korea, India, China and Vietnam.Canada. In all of these facilitiescenters, we develop and test both our hardware and software.software solutions. We have investedcontinue to invest heavily in both automated and scale testing capabilities for our products to better emulate our customers’ networks.

Our product development activities focus on products to support both existing and emerging technologies in the segments of the communications industry that we consider represent viable revenue opportunities. We are actively engaged in continuing to refine our solution architecture, introducing new products using the various solutions we support, and in creating additional interfaces and protocols for both domestic and international markets.


We continue our commitmentare committed to invest in leading edge technology research and development.development for new products and innovative solutions that align with our business strategy. Our research and product development expenses were $25.4 million, $21.3$47.0 million and $22.8$38.0 million in 2016, 20152021 and 2014,2020, respectively. We plan to continue to support the development of new products and features, while seeking to carefully manage associated costs through expense controls.

Intellectual Property

We seek to establish, maintain and maintainprotect our proprietary rights in our technology and products through the use of patents, copyrights, trademarks and trade secret laws.secrets. We also seek to maintain our trade secrets and confidential information by nondisclosure policies and through the use of appropriate confidentiality agreements. We have obtained a number of patents and trademarks in the United States of America (“United States”) and in other countries. There can be no assurance, however, that these rights can be successfully enforced against competitive products in every jurisdiction or any particular jurisdiction. Although we believe the protection afforded by our patents, copyrights, trademarks and trade secrets has value, the rapidly changing technology in the networking industry and uncertainties in the


legal process, both domestically and internationally, make our future success dependent primarily on the innovative skills, technological expertise, and management abilities of our employees rather than on the protection afforded by patent, copyright, trademark, and trade secret laws.

Many of our products are designed to include intellectual property licensed from third parties. While it may be necessary in the future to seek or renew licenses relating to various aspects of our products, we believe, based upon past experience and standard industry practice, that such licenses generally could be obtained on commercially reasonable terms. Nonetheless, there can be no assurance that the necessary licenses would be available on acceptable terms, if at all. Our inability to obtain certain licenses or other rights or to obtain such licenses or rights on favorable terms, or the need to engage in litigation regarding these matters, could have a material adverse effect on our business, operating results and financial condition.

The communications industry is characterized by rapidly changing technology, a large number of patents, and frequent claims and related litigation regarding patent and other intellectual property rights. We cannot assure you that our patents andor other proprietary rights will not be challenged, invalidated or circumvented, that others will not assert intellectual property rights to technologies that are relevant to us, or that our rights will give us a competitive advantage. In addition, the laws of some foreign countries may not protect our proprietary rights to the same extent as the laws of the United States.

Sales and Marketing

We have a global sales presence in various domestic and foreign locations,with customers from over 100 countries, and we sell our products and services both directly and indirectly through channel partners with support from our sales force. Channel partners include distributors, value added resellers, system integrators and service providers. These partners sell directly to and service end customers and often provide additional value-added services such as system installation, technical support, and professional services and support services in addition to the network equipment sale. sales. Our sales efforts are generally organized and sized according to geographical regions:

U.S. Sales. Our U.S. Sales organization establishes and maintains direct relationships with domestic customers, which includeregions for target carriers, and service providers, cable operatorsmunicipalities and utilities. In addition, this organization is responsible for managing our distribution and original equipment manufacturer, or OEM, partnerships.
enterprise customers. 

Americas Sales. Our Americas Sales organization includes coverage of North America and Latin America regions. The organization establishes and maintains direct and indirect relationships with customers in the Americas, which includes carriers and service providers, cable operators, utilities and enterprises. In addition, this organization is responsible for managing our distribution channel and also manages our inside sales and sales engineering activities.

International Sales. Our International Sales organization targets foreign carriers and service providers and is staffed with individuals with specific experience dealing with carriers and service providers in their designated international territories.

EMEA Sales. This organization establishes and maintains direct and indirect relationships with customers in the EMEA region, which includes carriers and service providers, cable operators, utilities and enterprises.

Asia Pacific Sales. This sales organization establishes and maintains direct and indirect relationships with customers in the Asia Pacific region, which includes carriers and service providers, cable operators, utilities and enterprises, in particular, with our South Korean customers, consisting primarily of Tier 1 carriers. These carriers have historically been early innovators across various telecommunications industry upgrade cycles, including broadband access technology and mobile fronthaul/backhaul technology. We partner with such carriers from the early phases of technology development to ensure our products are carrier-grade and purpose-built for the most rigorous of environments.

Enterprise Sales. Our Enterprise Sales organization includes global geographic coverage and is primarily focused on coverage of our FiberLAN solutions. The organization establishes and maintains direct and indirect relationships with enterprise customers for both greenfield (i.e., projects that do not follow a prior work) and brownfield (i.e., projects that modify or upgrade existing infrastructure or products) projects targeting enterprise customers in several industry verticals, including education (i.e., K-12, universities and colleges, etc.), hospitality, healthcare, stadiums, corporate campuses, and others.


Our marketing team works closely with our sales, research and product development organizations, and our customers by providing communications that keep the market current on our products and features. Marketing also identifies and sizes new target markets for our products, creates awareness of our company and products, generates contacts and leads within these targeted markets, and performs outbound education and public relations.

Backlog
relations, and participates in industry associations and standard industry bodies to promote the growth of the overall industry.

Our backlog consists of purchase orders for products and services that we expect to ship or perform within the next year. Our backlog may fluctuate based on the timing of when purchase orders are received. AtAs of December 31, 2016,2021, our backlog was $28.8approximately $225.0 million, as compared to $2.6$71.0 million at December 31, 2015.2020. We consider backlog to be an indicator, but not the sole predictor, of future sales because our customers may cancel or defer orders without penalty.

Competition

We compete in communications equipment markets, providing products and services for the delivery of voice, databroadband connectivity, connected home and videobusiness, mobile and optical edge transport, and cloud software-based services. These markets are characterized by rapid change, converging technologies and a migration to solutions that offer superior advantages.advantages in both operational efficiency and service performance. These market factors represent both an opportunity and a competitive threat to us. We compete with numerous vendors in our core broadband connectivity and connected home and business markets, including ADTRAN, Calix, Huawei, Nokia, Calix, Adtran, Huawei,Ubiquoss, and ZTE, among others. In our FiberLAN business, which is a subset of our broadband connectivity and connected home and business market, our competitors include TellabsCisco, Nokia, and Cisco,Tellabs, among others. In our mobile and optical edge transport business, our competitors include Ciena, Cisco and Juniper Networks, among others. In our cloud software business, our competitors include solutions from ADTRAN, Calix, Ciena, Nokia, and Solarwinds. In addition, a number of companies have introduced products that address the same network needs that our products and solutions address, both domestically and abroad.internationally. The overall number of our competitors may increase, and the identity and composition of competitors may change. As we continue to expand our sales globally, we may see new competition in different geographic regions. Barriers to entry are relatively low, and new ventures to create products that do or could compete with our products are regularly formed. Many of our competitors have greater financial, technical, sales and marketing resources than we do.

The principal competitive factors in the markets in which we presently compete and may compete in the future include:

product performance;

product performance;

feature capabilities;

interoperability with existing products;

manufacturing capacity;


interoperability with existing products;

scalability and upgradeability;

conformance to standards;

breadth of services;

reliability;

ease of installation and use;

geographic footprints for products;

ability to provide customer financing;

pricing;

technical support and customer service; and

brand recognition.

While we believe that we compete successfully with respect to each of these factors, we currently face and expect we will continue to face intense competition in our markets. In addition, the inherent nature of communications networking requires interoperability. As such, we must cooperate and at the same time compete with many companies.

Manufacturing

We manufacture our products using and Operations

Operationally, we use a global sourcing procurement program to purchase and manage key raw materials and subassemblies through qualified suppliers, sub-contractors, original equipment and design manufacturers and electronic manufacturing service vendors. The manufacturing process uses a strategic combination of procurement from qualified suppliers and in-house manufacturing atmanufacturing. Throughout the process we manage the assembly, quality assurance, customer testing, final inspection and shipping of our facility in Florida, and the use of original equipment manufacturers (OEMs) located in the Far East. products.


We manufacture many of our more complexlow volume, high mix products at our manufacturing facility in Florida.

Our partsSeminole, Florida, USA. For certain products, we rely on contract manufacturers, primarily located in Vietnam and components are procured fromChina, and original design manufacturers for high volume, low mix products. We have generally been able to have sufficient production capacity to meet demand for our product offerings through a varietycombination of qualified suppliers inexisting and added capacity, additional employees and the U.S., the Far East, Mexico and other countries around the world per our approved supplier list and detailed engineering specifications. outsourcing of products or components.

Some completed products are procured to our specifications and shipped directly to our customers. We also acquire completed products from certain suppliers, andwhich we configure and ship from our facility. Some of these purchases are significant. We purchase both standard off-the-shelf parts and components, which are generally available from more than one supplier, and single-source parts and components. We have generally been able to obtain adequate supplies to meet customer demand in a timely manner from our current vendors, or, when necessary, from alternate vendors. We believe that alternate vendors can be identified if current vendors are unable to fulfill our needs, or design changes can be made to employ alternate parts.

The recent outbreak of the coronavirus in China and other countries has negatively impacted our supply chain in recent months. Supply chain pricing, freight and logistics costs, availability, and extended lead-times became a challenge in 2021 as the world economy recovered from the COVID-19 pandemic. As we continue to incur elevated costs for components and expedite fees, our supply chain and operations teams continue to focus on managing through a constrained environment, thereby enabling DZS to maximize shipments despite elongated lead times. We remain cautious about continued supply chain headwinds that challenge the industry and anticipate a constrained supply chain environment to persist throughout 2022.

We design, specify, and monitor all of the tests that are required to meet our quality standards. Our manufacturing and test engineers work closely with our design engineers to ensure manufacturability and testability of our products, and to ensure that manufacturing and testing processes evolve asalong with our technologies evolve.technologies. Our manufacturing engineers specify, build, or procure our test stations, establish quality standards and protocols, and develop comprehensive test procedures and processes to assure the reliability and quality of our products. Products that are procured complete or partially complete are inspected, tested, or audited for quality control.

Our Quality Management System is compliant with, ISO-9001:2008 and we are certified to, ISO-9001:20082015 by our external registrar, National Standards Authority of Ireland (NSAI).Ireland. ISO-9001:20082015 requires that our processes arebe documented, followed and continuously improved. Internal audits are conducted on a regular schedule by our quality assurance personnel, and external audits are conducted by our external registrar each year. Our quality system is based upon our model for quality assurance in production and service to ensure our products meet rigorous quality standards.

We believe that we have sufficient production capacity to meet current and future demand for our product offerings through a combination of existing and added capacity, additional employees, or the outsourcing of products or components.

Compliance with Regulatory and Industry Standards

Our products must comply with a significant number of voice and data regulations and standards which vary by jurisdiction. Standards for new services continue to evolve, and we may need to modify our products or develop new versions to meet these standards. Standards setting and compliance verification in the U.S.United States are determined by the Federal Communications Commission, or FCC, Underwriters Laboratories (a global safety certification company), Quality Management Institute Telcordia Technologies, Inc.(a management training and leadership company), Telecordia (an operations management and fraud prevention solutions company which is a subsidiary of Ericsson), and other communications companies. In international markets, our products must comply with standards issued, by the European


Telecommunications Standards Institute (ETSI) and other standards bodies, as implemented and enforced by the regulatory authorities inof foreign jurisdictions, as applicable, such as the applicable jurisdiction.
European Telecommunications Standards Institute (“ETSI”), among others.

Environmental Matters

Our operations and manufacturing processes are subject to federal, state, local and foreign environmental protection laws and regulations. TheseSuch laws and regulations relate to the presence, use, handling, storage, discharge and disposal of certain hazardous materials and wastes, the pre-treatment and discharge of process waste waters and the control of process air pollutants.

Under certain laws of the United States, we can be held responsible for cleanup costs at currently or formerly owned or operated locations or at third party sites to which our wastes were sent for disposal. To date, liabilities relating to contamination have not been significant, and have not had a material impact on our operations or results. We believe that our operations and manufacturing processes currently comply in all material respects with applicable environmental protection laws and regulations. If we fail to comply with any present andor future laws or regulations, we could be subject to future liabilities, the suspension of production or a prohibition on the sale of our products. In addition, such regulations could require us to incur other significant expenses to comply with environmental laws or regulations, including expenses associated with the redesign of any non-compliant product.product or the development or installation of additional pollution control technology. From time to time new laws or regulations are enacted, and it is difficult to anticipate how such laws or regulations will be implemented and enforced. For example,enforced, or the impact they will have on our operations or results.


Our operations in 2003 the European Union enactedare subject to the Restriction on the Use of Certain Hazardous Substances in Electrical and Electronic Equipment Directive (RoHS) and the Waste Electrical and Electronic Equipment Directive (WEEE), for implementation in European Union member states.Directive. We are aware of similar legislation that is currently in force or is being consideredand are taking suitable action to comply with the new European Union Restriction of Hazardous Substances standards. Our operations in the United States as well asor other countries, such as Japan and China.China are subject to similar legislation. Our failure to comply with any of such regulatory requirements or contractual obligations relating to environmental matters or hazardous materials could result in ourus being liable for costs, fines, penalties and third-party claims, and could jeopardize our ability to conduct business in countries in the jurisdictions where thesesuch laws or the regulations apply.

Audit Committee Investigation

On March 21, 2017, the Audit Committee of our Board of Directors concluded, in consultation with management and after informing our former independent registered public accounting firm, that Legacy Zhone's unaudited condensed consolidated financial statements contained in its Amendment No. 2 to Quarterly Report on Form 10-Q/A for the quarter ended June 30, 2016 should no longer be relied upon due to material errors associated with the sale and subsequent return of certain products sold in December 2014. In connection with such finding, the Audit Committee commenced an independent investigation to determine whether any financial statements of Legacy Zhone prior to the quarter ended June 30, 2016 contained material errors. As a result of this investigation, which concluded in late July 2017, the Audit Committee concluded, in consultation with management and after informing our former independent registered public accounting firm, that Legacy Zhone's unaudited condensed consolidated financial statements contained in its Quarterly Reports on Form 10-Q for the quarters ended March 31, 2015, June 30, 2015, September 30, 2015 and March 31, 2016 and Legacy Zhone's audited consolidated financial statements and assessments of internal control over financial reporting, including disclosure controls and procedures, for the years ended December 31, 2015 and 2014 and contained in its Annual Reports on Form 10-K for the years ended December 31, 2015 and 2014 should no longer be relied upon. The determination that there were errors in Legacy Zhone's financial statements in periods prior to the Merger will not impact the financial statements of DZS following the Merger given the treatment of DNS as accounting acquirer.

Matters relating to or arising from the Audit Committee investigation and the associated material weaknesses identified in our internal control over financial reporting, including adverse publicity, have caused us to incur significant legal, accounting and other professional fees and other costs, have exposed us to greater risks associated with other civil litigation, regulatory proceedings and government enforcement actions, have diverted resources and attention that would otherwise be directed toward our operations and implementation of our business strategy and may have impacted our ability to attract and retain customers, employees and vendors.

Employees

As of December 31, 2016,2021, we employed 622 individualsover 840 personnel worldwide. We consider the relationships with our employees to be positive. Competition for technical personnel in our industry is intense. We believe that our future success depends in part on our continued ability to hire, assimilate and retain qualified personnel. To date, we believe that we have been successful in recruiting qualified employees, but there is no assurance that we will continue to be successful in the future.

Executive Officers
Set forth below is information concerning our executive officers and their ages as of December 31, 2016. As part of the
management transition in connection with the first anniversary of the Merger, on September 11, 2017, James
Norrod and Kirk Misaka stepped down from their roles as Co-Chief Executive Officer and Chief Financial Officer,
respectively, and Il Yung Kim was appointed President, Chief Executive Officer and Acting Chief Financial Officer.

Mr. Norrod’s employment with us terminated on September 11, 2017 and he also stepped down from his role as a member of the Board of Directors on that date. Mr. Misaka has agreed to remain in our employ as Corporate Treasurer and Secretary for a transitional period to assist with the transition of his responsibilities.
NameAgePosition
Il Yung Kim60Co-Chief Executive Officer
James Norrod68Co-Chief Executive Officer
Kirk Misaka58Chief Financial Officer, Corporate Treasurer and Secretary
Il Yung Kim joined DZS as Co-Chief Executive Officer and a director on September 9, 2016 in connection with the Merger. Prior to the Merger, Mr. Kim served as a consultant to DNI in connection with the Merger and, from September 2014 to August 2016, served as Chief Executive Officer of TukTak in Korea, an online startup company, which enables people with creative talents to collaborate and produce goods and services online. From December 2014 to August 2016, he also served as a strategic advisor for InMobi, a global mobile advertising platform provider. Previously, Mr. Kim held various positions with Korea Telecom, including as President and executive board member from 2013 to 2014, and as Chief Strategy Officer from 2010 to 2013. Mr. Kim commenced his career with British Telecom in 1982, where he held various senior positions including Vice President of Technology and Innovation and Programme Director and Head of Technology and Investment. Mr. Kim holds a B.S. (with Honors) in Electronic Engineering and an M.S. Degree in Microwave and Modern Optics from University College, University of London.
James Norrod became Legacy Zhone's President, Chief Executive Officer and a director in July 2014, and continued to serve as our Co-Chief Executive Officer and a director following the Merger, before stepping down in September 2017 as part of the management transition in connection with the first anniversary of the Merger. Prior to joining Legacy Zhone, from January 2013 to December 2013, Mr. Norrod served as Chief Executive Officer of BigBelly Solar, a provider of innovative solar powered solutions for the management of waste and recycling. From October 2010 to January 2013, Mr. Norrod served as President and Chief Executive Officer of Infinite Power Solutions, a clean technology company focused on the development and manufacturing of micro-energy storage devices. From April 2005 to January 2010, Mr. Norrod served as President and Chief Executive Officer of Segway Inc., a company focused on the development and manufacturing of electric personal transportation products and technologies. Prior to joining Segway, Mr. Norrod held various chief executive officer positions across the technology industry. Mr. Norrod started his career with IBM, where he managed the General Motors account for more than 10 years. Mr. Norrod holds a B.S. in Economics from Oakland University and an M.B.A. from the University of Detroit.
Kirk Misaka served as Legacy Zhone’s Corporate Treasurer since November 2000 and Chief Financial Officer and Secretary since July 2003. Mr. Misaka continued to serve as our Chief Financial Officer, Corporate Treasurer and Secretary following the Merger until September 2017, and currently serves as our Corporate Treasurer and Secretary. Prior to joining Legacy Zhone, Mr. Misaka was a Certified Public Accountant with KPMG LLP from 1980 to 2000, becoming a partner in 1989. Mr. Misaka earned a B.S. and an M.S. in Accounting from the University of Utah, and an M.S. in Tax from Golden Gate University.
Web site

Website and Available Information

Our investor website address is www.dasanzhone.comhttp://investor-dzsi.com. The information on, or accessible through, our website does not constitute part of this report. Through a linkAnnual Report on Form 10-K, or any other report, schedule or document we file or furnish to the "Financials" section ofSEC. On our investor website, we make available the following filings available free of charge as soon as reasonably practicable after they are electronically filed with or furnished to the SEC: our Annual Report on Form 10-K, Quarterly Reports on Form 10-Q, Current Reports on Form 8-K and any amendments to those reports filed or furnished pursuant to Section 13(a) or 15(d) of the Exchange Act. All such filings are available free of charge.

The SEC maintains an internet site that contains reports, proxy and information statements, and other information regarding issuers that file electronically with the SEC at http://www.sec.gov.


ITEM 1A.    RISK FACTORS    

ITEM 1A.

RISK FACTORS

Set forth

An investment in our common stock involves a high degree of risk. You should carefully consider the risks described below and the other information in this Annual Report on Form 10-K and in other filings we make with the SEC before making an investment decision. Our business, prospects, financial condition, or operating results could be harmed by any of these risks, as well as other risks not currently known to us or that we currently consider immaterial. If any of such risks and uncertainties actually occurs, our business, financial condition or operating results could differ materially from the plans, projections and other forward-looking statements included in the section titled “Management’s Discussion and Analysis of Financial Condition and Results of Operations” and elsewhere in this report and in our other documents we file with the SEC arepublic filings. The trading price of our common stock could decline due to any of these risks, and, uncertainties that could cause actual resultsas a result, you may lose all or part of your investment.

Risks Directly Related to differ materially from the results contemplated by the forward-looking statements contained in this report.

ongoing COVID-19 Pandemic

The reportCOVID-19 pandemic has previously adversely affected significant portions of our independent registered public accounting firm expresses substantial doubt about our ability to continue asbusiness and could have a going concern.

Our independent registered public accounting firm has indicated in its reportmaterial adverse effect on our consolidated financial statements forcondition and results of operations. Authorities have imposed, and businesses and individuals have implemented, numerous measures to try to contain the year ended December 31, 2016 that conditions exist that raise substantial doubt aboutvirus or treat its impact, such as travel bans and restrictions, quarantines, shelter-in-place/stay-at-home and social distancing orders, shutdowns, and vaccine requirements. These measures have impacted and may further impact our ability to continueworkforce and operations, the operations of our customers, and those of our respective suppliers and partners. We have experienced, and could in the future experience, reduced workforce availability at some of our sites, construction delays, and reduced capacity at some of our suppliers. We have operations in the US, Canada, South Korea, Japan, Vietnam, India, as a going concern duewell as in other countries in Europe, Asia-Pacific, Middle East and Latin America, and each of these countries is taking measures in response to the maturing of short-term debt obligations and our recurring losses from operations. A “going concern” opinion could materially impair our ability to finance our operations through the sale of equity, incurrence of debt, or other financing alternatives, and materially impair our ability to negotiate reasonable terms with our suppliers. Our ability to continue as a going concern" is dependent on many factors, including, among other things, our ability to comply with the covenants in our existing debt agreements, our ability to cure any defaults that occur under our debt agreements or to obtain waivers or forbearances with respect to any such defaults, and our ability to pay, retire, amend, replace or refinance our indebtedness as defaults occur or as interest and principal payments come due. Although the process of amending, replacing or refinancing our short-term debt obligations is ongoing and we are in active discussions with multiple parties, there is no guarantee that they will result in transactions that are sufficient to provide us with the required liquidity to remove the substantial doubt as to our ability to continue as a going concern. If we are unable to amend, replace, refinance our short-term debt obligations or raise the capital needed to meet liquidity needs and finance capital expenditures and working capital, we may experience material adverse impactspandemic. Restrictions on our business, operating results and financial condition. Our financial statements do not include any adjustments that may be necessary in the event we are unable to continue as a going concern. If we become unable to continue as a going concern, we may have to liquidate our assets and the values we receivemanufacturing or support operations or workforce, similar limitations for our assets in liquidationsuppliers, and transportation restrictions or dissolution could be significantly lower than the values reflected in our financial statements. If we ceased operations, it is likely that all of our stockholders would lose their entire investment.
Our lack of liquid funds and other sources of financing maydisruptions can limit our ability to maintainmeet customer demand and could have a material adverse effect on our existingfinancial condition and results of operations. Our customers have experienced, and may in the future experience, disruptions in their operations growand supply chains, which can result in delayed, reduced, or cancelled orders, or collection risks, and which may adversely affect our results of operations.

We have experienced and continue to experience disruptions in our supply chain due to the impact of the COVID-19 pandemic, which has also impacted and may adversely impact our operations (including, without limitation, logistical and other operational costs) and the operations of some of our key suppliers. If our vendors for product components are unable to meet our cost, quality, supply and transportation requirements, continue to remain financially viable or fulfill their contractual commitments and obligations, we could experience disruption in our supply chain, including shortages in supply or increases in production costs, which would materially adversely affect our results of operations. The current worldwide shortage of semiconductors may exacerbate these risks.

The pandemic has caused us to modify our business practices, including with respect to employee travel; employee work locations; limitations on physical participation in meetings, events, and competeconferences; and social distancing measures. Future vaccine mandates in the countries in which we operate could adversely affect our workforce retention and hiring. We may take


further actions as required by government authorities or others, or that we determine are in the best interests of our employees, customers, suppliers, and partners. Work-from-home and other measures introduce additional operational risks, including cybersecurity risks, and have affected the way we conduct our product development, validation, and qualification, customer support, and other activities, which could have a material adverse effect on our operations. There is no certainty that such measures will be sufficient to mitigate the risks posed by the virus, and illness and workforce disruptions could lead to unavailability of key personnel and harm our ability to perform critical functions.

The pandemic has significantly increased economic and demand uncertainty and has led to volatility in capital markets and credit markets. Adverse changes in economic conditions related to the COVID-19 pandemic can significantly harm demand for our products and make it more challenging to forecast our operating results. Given the continued and substantial economic uncertainty and volatility created by the pandemic, it is difficult to predict the nature and extent of impacts on demand for our products.

The degree to which COVID-19 impacts our results will depend on future developments, which are highly uncertain and cannot be predicted, including the duration and severity of the pandemic; the actions taken to contain the virus or treat its impact; other actions taken by governments, businesses, and individuals in response to the virus and resulting economic disruption; and how quickly and to what extent normal economic and operating conditions can resume. Additional impacts and risks may arise that we are not aware of or able to respond to effectively.

We are similarly unable to predict the extent of the impact of the pandemic on our customers, suppliers, and other partners, but a material effect on these parties could also materially adversely affect us. The impact of COVID-19 can also exacerbate other risks discussed in this Risk Factors section and throughout this report.

Risks Related to our Liquidity

We may not have the liquidity to support our future operations and capital requirements.

As of December 31, 2016,2021, we had approximately $17.9$46.7 million in unrestricted cash and cash equivalents, and $24.4 million in aggregate principal amount of our total outstanding indebtedness, which comprised $17.6 million in aggregate principal amount of outstanding borrowings under our short-term debt obligations and $6.8 million in related party borrowings. Our cash and cash equivalents as of December 31, 2016 included $9.8including $30.1 million in cash balances held by our Korean subsidiary.international subsidiaries. If we are unable to raise additional capital, we may be unable to adequately fund our existing operations. Our current lack of liquidity could harmcondition exposes us by:

increasing ourto the following risks: (i) vulnerability to adverse economic conditions in our industry or the economy in general;
requiring substantial amounts of cash to be used for debt servicing, rather than other purposes, including operations;
limiting (ii) limitations on our ability to adequately plan for, or react to, changes in our business and industry; and
influencing (ii) negative investor and customer perceptions about our financial stability, and limitingwhich could limit our ability to obtain financing or acquire customers.
In order

Our current liquidity condition could be further harmed, and we may incur significant losses or expend significant amounts of capital if: (i) the market for our products develops more slowly than anticipated or if it retracts; (ii) we fail to establish market share or generate revenue at anticipated levels; (iii) our capital expenditure forecasts change or prove to be inaccurate; or (iv) we fail to respond to unforeseen challenges or take advantage of unanticipated opportunities; or (v) the on-going COVID-19 pandemic continues to negatively impact our business or further exacerbates any of the foregoing risks.

To meet our liquidity needs and to finance our capital expenditures and working capital needs for our business, we may be required to sell assets, issue debt or equity securities, purchase credit insurance, or borrow on potentially unfavorable terms or reduce costs which could impact new product innovation. In addition, we may be required toraise substantial additional capital, reduce our operations in low margin regions, including reductions in headcount. We may be unable to sell assets, access additional indebtedness or undertake other actions to meet these needs. As a result, we may become unable to pay our ordinary expenses, including our debt service, on a timely basis. If additional capital is raised(including through the issuance of debt securities or other debt financing, the terms of such debt may include covenants, restrictions and financial ratios that may restrict our ability to operate our business. Likewise, any equity financing could result in additional dilution of our stockholders. Moreover, we may be required to include audited annual and unaudited interim historical financial statements of Legacy Zhone in any registration statement for the sale of shares of our common stockassets) or other securities, which may make it more costly and time consuming for us to raise additional capital through a public offering of securities. If we are unable to sell assets, issue securities or access additional indebtedness to meet these needs on favorable terms, or at all, we may become unable to pay our ordinary expenses, including our debt service, on a timely basis and may be required to reduce the scope of our planned product development and sales and marketing efforts beyond the reductions we have previously taken. In addition, we may not be able to fund our business expansion, take


advantage of future opportunities, or respond to competitive pressures or unanticipated capital requirements, any of which could have a material adverse effect on our business, financial condition and results of operations.
If we are unable to obtain additional capital to fund our existing and future operations, we may be required to reduce the scope of our planned product development, and marketing and sales efforts, which would harm our business, financial condition and results of operations.
The development and marketing of new products, and the expansion of our direct sales operations and associated support personnel requires a significant commitment of resources. We may incur significant losses or expend significant amounts of capital if:
the market for our products develops more slowly than anticipated;
we fail to establish market share or generate revenue at anticipated levels;
our capital expenditure forecasts change or prove inaccurate; or
we fail to respond to unforeseen challenges or take advantage of unanticipated opportunities.
As a result, we may need to raise substantial additional capital. Additional capital, if required, may not be available on acceptable terms, or at all. If additional capital is raised through the issuance of debt securities or other debt financing, the terms of such debt may include covenants, restrictions and financial ratios that may restrict our ability to operate our business. In addition, volatility in our stock price may make it more difficult or costly for us to raise capital through the issuance of common stock, preferred stock or other equity securities. If we elect to raise equity capital, this may be dilutive to existing stockholders and could reduce the trading price of our common stock. Moreover, we may be required to include audited annual and unaudited interim historical financial statements of Legacy Zhone in any registration statement for the sale of shares of our common stock or other securities, which may make it more costly and time consuming for us to raise additional capital through a public offering of securities. If we are unable to obtain additional capital or are required to obtain additional capital on terms that are not favorable to us, we may be required to reduce the scope of our planned product development and sales and marketing efforts beyond the reductions that we have previously taken, which could have a material adverse effect on our business, financial condition and results of operations.
The integration of Legacy Zhone and DNS may not be completed successfully, cost-effectively or on a timely basis, and we may not realize the full benefits of the Merger.
Our ability to realize the anticipated benefits of the Merger will depend, to a large extent, on our ability to successfully integrate the Legacy Zhone and DNS businesses. Integrating and coordinating certain aspects of the operations and personnel of the two businesses and managing the expansion in the scope of our operations and financial systems involves complex operational, technological and personnel-related challenges. Our management will be required to devote a significant amount of time and attention to the process of integrating the Legacy Zhone operations with those of DNS. The potential difficulties, and resulting costs and delays, relating to the integration of the Legacy Zhone and DNS businesses include, among others:
the diversion of management’s attention from day-to-day operations;
the management of a significantly larger company than before the Merger;
the assimilation of DNS employees and the integration of the two business cultures;
challenges in attracting and retaining key personnel;
the need to integrate information, accounting, finance, sales, billing, payroll and regulatory compliance systems;
challenges in keeping existing customers and obtaining new customers; and
challenges in combining product offerings and sales and marketing activities.
There is no assurance that we will successfully or cost-effectively integrate the Legacy Zhone and DNS operations. The costs of achieving systems integration may substantially exceed our current estimates. As a non-public company prior to the Merger, DNS did not have to comply with the requirements of the Sarbanes-Oxley Act of 2002, or the Sarbanes-Oxley Act, for internal control over financial reporting and other procedures. Accordingly, neither DNS nor its independent auditors undertook a formal assessment or audit of DNS’ internal control over financial reporting prior to the Merger. However, in connection with the preparation and external audit of DNS’ consolidated financial statements as of and for the three years ended December 31, 2015 and the preparation and review of DNS’ unaudited condensed consolidated financial statements as of and for the three

months ended March 31, 2016, DNS and its independent auditors noted two material weaknesses in DNS’ internal control over financial reporting. The material weaknesses that were identified were (a) lack of resources that are knowledgeable about U.S. GAAP and SEC reporting matters to allow the company to prepare the required filings on an accurate and timely basis as a U.S. domestic registrant, and (b) lack of knowledge and experience in preparing financial statements under U.S. GAAP and that comply with SEC reporting matters on a timely and accurate basis as a U.S. domestic registrant. Bringing the legacy systems for the DNS business into compliance with requirements under the Sarbanes-Oxley Act may cause us to incur substantial additional expense. If we are unable to implement and maintain an effective system of internal controls, the existence of one or more internal control deficiencies could result in errors in our financial statements, and substantial costs and resources may be required to rectify internal control deficiencies. If we cannot produce reliable financial reports, investors could lose confidence in our reported financial information, the market price of our stock could decline significantly, we may be unable to obtain additional financing to operate and expand our business, and our business and financial condition could be materially harmed. In addition, the integration process may cause an interruption of, or loss of momentum in, the activities of our business. If our management is not able to effectively manage the integration process, or if any significant business activities are interrupted as a result of the integration process, our business could suffer and its results of operations and financial condition may be harmed.
Even if the businesses of Legacy Zhone and DNS are successfully integrated, we may not realize the full benefits of the Merger, including anticipated cost synergies, growth opportunities and other financial and operating benefits, within the expected timeframe or at all. In addition, we expect to incur significant integration and restructuring expenses to realize synergies. However, many of the expenses that will be incurred are, by their nature, difficult to estimate accurately. These expenses could, particularly in the near term, exceed the savings that we expect to achieve from elimination of duplicative expenses and the realization of economies of scale and cost savings. Although we expect that the realization of efficiencies related to the integration of the businesses may offset incremental transaction, Merger-related and restructuring costs over time, we cannot give any assurance that this net benefit will be achieved in the near term, or at all. Any of these matters could adversely affect our businesses or harm our financial condition, results of operations and prospects.
We have identified material weaknesses in our internal control over financial reporting, and we cannot provide assurances that these weaknesses will be effectively remediated or that additional material weaknesses will not occur in the future. If our internal control over financial reporting or our disclosure controls and procedures are not effective, we may not be able to accurately report our financial results, prevent fraud or file our periodic reports in a timely manner, which may cause investors to lose confidence in our reported financial information and which may lead to a decline in our stock price.
On February 20, 2017, the Audit Committee of our Board of Directors concluded, in consultation with management and after informing our independent registered public accounting firm, that, due to incorrect application of generally accepted accounting principles that resulted in material misstatements and a restatement of our unaudited condensed consolidated financial statements, our previously issued interim unaudited condensed consolidated financial statements for the three and nine months ended September 30, 2016 should no longer be relied upon. On March 21, 2017, the Audit Committee of our Board of Directors concluded, in consultation with management and after informing our former independent registered public accounting firm, that Legacy Zhone's unaudited condensed consolidated financial statements for the quarter ended June 30, 2016 should also no longer be relied upon due to material errors associated with the sale and subsequent return of certain products sold in December 2014. In connection with such finding, the Audit Committee commenced an independent investigation to determine whether any financial statements of Legacy Zhone prior to the quarter ended June 30, 2016 contained material errors. As a result of this investigation, which concluded in late July 2017, the Audit Committee concluded, in consultation with management and after informing our former independent registered public accounting firm, that Legacy Zhone's unaudited condensed consolidated financial statements for the quarters ended March 31, 2015, June 30, 2015, September 30, 2015 and March 31, 2016 and Legacy Zhone's audited consolidated financial statements and assessments of internal control over financial reporting, including disclosure controls and procedures, for the years ended December 31, 2015 and 2014 should no longer be relied upon. See “Business - Audit Committee Investigation” above for additional information.
Furthermore, as discussed in “Part II, Item 9A. Controls and Procedures,” our management has identified material weaknesses in our internal control over financial reporting as of December 31, 2016. A material weakness is a deficiency, or a combination of deficiencies, in internal control over financial reporting such that there is a reasonable possibility that a material misstatement of the registrant’s annual or interim financial statements will not be prevented or detected on a timely basis.
We did not maintain an effective control environment as there was an insufficient complement of personnel with appropriate accounting knowledge, experience and competence, resulting in incorrect application of generally accepted accounting principles. This material weakness contributed to the following material weaknesses. We did not maintain effective controls over our financial close process. Also, we did not design and maintain effective controls over the review of supporting information to determine the completeness and accuracy of the accounting for complex transactions, specifically related to the business combination that occurred on September 9, 2016, which resulted in an incorrect application of generally accepted

accounting principles that resulted in material misstatements and a restatement of our unaudited condensed consolidated financial statements for the three and nine months ended September 30, 2016.
As of the date of this report, we are re-assessing the design of our controls and modifying processes related to the accounting for significant and unusual transactions as well as enhancing monitoring and oversight controls in the application of applicable accounting guidance related to such transactions. In connection therewith, we anticipate that we will hire additional accounting personnel with relevant skills, training and experience, and conduct further training of accounting and finance personnel. We believe that these initiatives will remediate the material weaknesses in internal control over financial reporting described above. However, there can be no assurance that we will be able to fully remediate our existing material weaknesses or that our internal control over financial reporting will not suffer in the future from other material weaknesses, thus making us unable to prevent or detect on a timely basis material misstatements in our periodic reports with the SEC. If we fail to remediate these material weaknesses or otherwise maintain effective internal control over financial reporting in the future, the existence of one or more internal control deficiencies could result in errors in our financial statements, and substantial costs and resources may be required to rectify internal control deficiencies. If we cannot produce reliable financial reports, we may have difficulty in filing timely periodic reports with the SEC, investors could lose confidence in our reported financial information, the market price of our stock could decline significantly, we may be unable to obtain additional financing to operate and expand our business, and our business and financial condition could be materially harmed. In addition, any failure to remediate the existing material weaknesses or a failure to maintain effective internal control over financial reporting could negatively impact our results of operations, cash flows and financial condition, subject us to potential litigation and regulatory inquiry and cause us to incur additional costs in future periods relating to the implementation of remedial measures.
Matters relating to or arising from the Audit Committee investigation and the associated material weaknesses identified in our internal control over financial reporting, including adverse publicity, have caused us to incur significant legal, accounting and other professional fees and other costs, have exposed us to greater risks associated with other civil litigation, regulatory proceedings and government enforcement actions, have diverted resources and attention that would otherwise be directed toward our operations and implementation of our business strategy and may impact our ability to attract and retain customers, employees and vendors, any of which could have a material adverse effect on our business, financial condition and results of operations.
Our future operating results are difficult to predict and our stock price may continue to be volatile.
As a result of a variety of factors discussed in this report, our revenues for a particular quarter are difficult to predict. Our revenue and operating results may vary significantly from quarter to quarter due to a number of factors, many of which are outside of our control. The primary factors that may affect our results of operations include the following:
commercial acceptance of our products and services;
fluctuations in demand for network access products;
the timing and size of orders from customers;
the ability of our customers to finance their purchase of our products as well as their own operations;
new product introductions, enhancements or announcements by our competitors;
our ability to develop, introduce and ship new products and product enhancements that meet customer requirements in a timely manner;
changes in our pricing policies or the pricing policies of our competitors;
the ability of our company and our contract manufacturers to attain and maintain production volumes and quality levels for our products;
our ability to obtain sufficient supplies of sole or limited source components;
increases in the prices of the components we purchase, or quality problems associated with these components;
unanticipated changes in regulatory requirements which may require us to redesign portions of our products;
changes in accounting rules;
integrating and operating any acquired businesses;

our ability to achieve targeted cost reductions;
how well we execute on our strategy and operating plans; and
general economic conditions as well as those specific to the communications, internet and related industries.
Any of the foregoing factors, or any other factors discussed elsewhere herein, could have a material adverse effect on our business, results of operations, and financial condition that could adversely affect our stock price. We anticipate that our stock price and trading volume may continue to be volatile in the future, whether due to the factors described above, volatility in public stock markets generally (particularly in the technology sector) or otherwise.
Between October 2011 and July 2013, in December 2015 and between December 2016 and February 2017, the bid price for our common stock traded below the $1.00 minimum per share bid price required for continued inclusion on the Nasdaq Capital Market under Marketplace Rule 5550(a)(2). We have received letters from Nasdaq requiring us to regain compliance within a specified period. A failure to regain compliance could result in our stock being delisted, subject to a right of appeal. On February 28, 2017, we effected a one-for-five reverse stock split of our outstanding shares of common stock. As a result of this, in March 2017, we received written notification from Nasdaq advising us that we had regained compliance with the minimum bid price rule as the closing bid price of our common stock had been $1.00 per share or greater for ten consecutive business days. There can be no assurance that our stock price will remain above the minimum bid price or that we will be able to regain compliance if our stock price falls below the minimum bid price again in the future. In addition, if our average market capitalization falls below the carrying value of our assets for an extended period of time as it has done during recent years, this may indicate that the fair value of our net assets is below their carrying value, and may result in recording impairment charges.
both.

We have experienced significant losses and we may incur losses in the future. If we fail to generate sufficient revenue to sustain our profitability, our stock price could decline.

We had a net loss of $34.7 million and $23.1 million for the years ended December 31, 2021 and 2020, respectively. Additionally, we have incurred significant losses to date and expect that our operating losses and negative cash flows from operations may continue. Our net loss was $15.3 million for the year ended December 31, 2016 and we hadin prior years. We have an accumulated deficit of $19.9$87.0 million atas of December 31, 2016.2021. We have significant fixed expenses and expect that we will continue to incur substantial manufacturing, research and product development, sales and marketing, customer support, administrative and other expenses in connection with the ongoing development of our business. In addition, we may be required to spend more on research and product development than originally budgeted to respond to industry trends. We may also incur significant new costs related to acquisitions and the integration of new technologies and other acquisitions that may occur in the future. We may not be able to adequately controlmanage costs and expenses or achieve or maintain adequate operating margins. As a result, our ability to sustain profitability in future periods will depend on our ability to generate and sustain higher revenue while maintaining reasonable costcosts and expense levels. If we fail to generate sufficient revenue to sustain profitability in future periods, we may continue to incur operating losses, which could be substantial, and our stock price could decline.

Our level

In connection with the Keymile acquisition, we assumed certain of indebtednessKeymile’s liabilities, which could adversely affectharm our business, operating resultsoperations, financial condition, and financial condition.

We haveliquidity.

Pursuant to the definitive agreement for the acquisition of Keymile GmbH, now DZS GmbH (“Keymile” or “DZS GmbH”), we assumed certain of Keymile’s liabilities, including tax and pension liabilities, and any liabilities that may arise related to breaches of representations and warranties made by Keymile in connection with a significantprior sale of assets by Keymile that survive through 2022. Although the definitive agreement for the Keymile acquisition entitles us to indemnification for certain losses


incurred related to those assumed liabilities, our right to indemnification from the Keymile sellers is limited by the survival period of the representations and warranties included in the Keymile acquisition definitive agreement and recovery is limited in amount to the purchase price of indebtedness. As of December 31, 2016, the aggregate principal amount ofKeymile, or EUR 10.3 million (approximately $11.7 million). Additionally, our total outstanding indebtedness was $24.4 million, which comprised $17.6 million in aggregate principal amount of outstanding borrowingsrights to recovery against such losses is limited under our short-term debt obligations and $6.8third party provided warranty and indemnity liability insurance coverage of up to EUR 35.3 million in related party borrowings. We may incur additional indebtedness in(approximately $40.2 million).  If such claims or losses exceed such amount, or if they are not indemnifiable under the future, including additional borrowings underKeymile acquisition definitive agreement, any such losses could negatively impact our credit facility with Wells Fargo Bank (the WFB Facility). The level of indebtedness could have important consequences and could materially and adversely affect us in a number of ways, including:

limitingfinancial situation. In addition, our ability to obtain additional financing in the future for working capital, capital expenditures, acquisitions or general corporate purposes;
limiting our flexibility to plan for, or react to, changes in our business or market conditions;
requiring us to use a significant portion of any future cash flow from operations to repay or service the debt, thereby reducing the amount of cash available for other purposes;
making us more highly leveraged than some of our competitors, which may place us at a competitive disadvantage; and
making us more vulnerable to the impact of adverse economic and industry conditions and increases in interest rates.
The WFB Facility and the instruments governing our other indebtedness include covenants (including, in the caseclosing of the WFB Facility, financial ratios) that may restrict our abilityKeymile acquisition could give rise to operate our business. These covenants restrict, among other matters, our

ability to incur additional indebtedness, grant liens, sell or dispose of assets, make loans and investments, pay dividends, redeem or repurchase capital stock, enter into affiliate transactions and consolidate or merger with, or sell substantially all of our assets to, another person. If we defaultsubstantial tax liabilities under the WFB Facility or other instrument governing our other indebtedness because of a covenant breach or otherwise, all amounts outstanding thereunderGerman law, which could become immediately due and payable. In addition, WFB may be entitled to, among other things, sell our assets to satisfy the obligations under the WFB Facility. In the past we have violated the covenants in our credit facilities and received waivers for these violations. We were in compliance with our covenants under our WFB Facility as of December 31, 2016. We cannot assure you that we will be able to comply with our financial or other covenants in the future or that any covenant violations will be waived in the future. Any acceleration of amounts due could have a material adverse effect on our liquidity and financial condition.    
We cannot assure you that we will be able to generate cash flow in amounts sufficient to enable us to service our debt or to meet our working capital and capital expenditure requirements. If we are unable to generate sufficient cash flow from operations or to borrow sufficient funds to service our debt, due to borrowing base restrictions or otherwise, we may be required to sell assets, reduce capital expenditures, purchase credit insurance or obtain additional financing. We cannot assure you that we will be able to engage in any of these actions on reasonable terms, if at all.
Our business and future operating results are subject to global economic and market conditions.
Market turbulence and weak economic conditions, as well as concerns about energy costs, geopolitical issues, the availability and cost of credit, business and consumer confidence, and unemployment could impact our business in a number of ways, including:
Potential deferment of purchases and orders by customers: Uncertainty about global economic conditions may cause consumers, businesses and governments to defer purchases in response to flat revenue budgets, tighter credit, decreased cash availability and weak consumer confidence. Accordingly, future demand for our products could differ materially from our current expectations.
Customers’ inability to obtain financing to make purchases and/or maintain their business: Some of our customers require substantial financing in order to finance their business operations, including capital expenditures on new equipment and equipment upgrades, and make purchases from us. The potential inability of these customers to access the capital needed to finance purchases of our products and meet their payment obligations to us could adverselynegatively impact our financial condition and results of operations. While we monitor these situations carefullyliquidity.

Customer and attempt to take appropriate measures to protect ourselves, including factoring credit arrangements to financial institutions, it is possible that we may have to defer revenue until cash is collected or write-down or write-off uncollectible accounts. Such write-downs or write-offs, if large, could have a material adverse effect on our results of operationsProduct Risk

The long and financial condition. If our customers become insolvent due to market and economic conditions or otherwise, it could have a material adverse impact on our business, financial condition and results of operations.

Negative impact from increased financial pressures on third-party dealers, distributors and retailers: We makevariable sales in certain regions through third-party dealers, distributors and retailers. These third parties may be impacted, among other things, by a significant decrease in available credit. If credit pressures or other financial difficulties result in insolvency for these third parties and we are unable to successfully transition end customers to purchase our products from other third parties, or from us directly, it could adversely impact our financial condition and results of operations.
Negative impact from increased financial pressures on key suppliers: Our ability to meet customers’ demands depends, in part, on our ability to obtain timely and adequate delivery of quality materials, parts and components from our suppliers. Certain of our components are available only from a single source or limited sources. If certain key suppliers were to become capacity constrained or insolvent, it could result in a reduction or interruption in supplies or a significant increase in the price of supplies and adversely impact our financial condition and results of operations. In addition, credit constraints of key suppliers could result in accelerated payment of accounts payable by us, impacting our cash flow.
We may experience material adverse impacts on our business, operating results and financial condition as a result of weak or recessionary economic or market conditions in the United States, Korea or the rest of the world.
If demandcycles for our products and solutions does not develop as we anticipate, then our results of operations and financial condition will be adversely affected.
Our futurecould cause revenue depends significantly on our ability to successfully develop, enhance and market our products and solutions to our target markets. Most network service providers have made substantial investments in their current infrastructure, and they may elect to remain with their current architectures or to adopt new architectures in limited stages or over extended periods of time. A decision by a customer to purchase our products will involve a significant capital investment. We must

convince our service provider customers that they will achieve substantial benefits by deploying our products for future upgrades or expansions. We may experience difficulties with product reliability, partnering, and sales and marketing efforts that could adversely affect our business and divert management attention and resources from our core business. We do not know whether a viable market for our products and solutions will develop or be sustainable in our businesses. If these markets do not develop or develop more slowly than we expect, our business, financial condition and results of operations will be seriously harmed.
We depend upon the development of new products and enhancements to existing products, and if we fail to predict and respond to emerging technological trends and customers’ changing needs, our operating results and market share may suffer.
The markets for our products are characterized by rapidly changing technology, evolving industry standards, changes in end-user requirements, frequent new product introductions and changes in communications offerings from network service provider customers. Our future success depends on our ability to anticipate or adapt to such changes and to offer, on a timely and cost-effective basis, products that meet changing customer demands and industry standards. We may not have sufficient resources to successfully and accurately anticipate customers’ changing needs and technological trends, manage long development cycles or develop, introduce and market new products and enhancements. The process of developing new technology is complex and uncertain, and if we fail to develop new products or enhancements to existing products on a timely and cost-effective basis, or if our new products or enhancements fail to achieve market acceptance, our business, financial condition and results of operations would be materially adversely affected.
Because our products are complex and are deployed in complex environments, our products may have defects that we discover only after full deployment by our customers, which could seriously harm our business.
We produce highly complex products that incorporate leading-edge technology, including both hardware and software. Software typically contains defects or programming flaws that can unexpectedly interfere with expected operations. In addition, our products are complex and are designed to be deployed in large quantities across complex networks. Because of the nature of these products, they can only be fully tested when completely deployed in large networks with high amounts of traffic, and there is no assurance that our pre-shipment testing programs will be adequate to detect all defects. As a result, our customers may discover errors or defects in our hardware or software, or our products may not operate as expected, after they have been fully deployed by our customers. If we are unable to cure a product defect, we could experience damage to our reputation, reduced customer satisfaction, loss of existing customers and failure to attract new customers, failure to achieve market acceptance, reduced sales opportunities, loss of revenue and market share, increased service and warranty costs, diversion of development resources, legal actions by our customers, and increased insurance costs. Defects, integration issues or other performance problems in our products could also result in financial or other damages to our customers. Our customers could seek damages for related losses from us, which could seriously harm our business, financial condition and results of operations. A product liability claim brought against us, even if unsuccessful, would likely be time consuming and costly. The occurrence of any of these problems would seriously harm our business, financial condition and results of operations.
Due to the international nature of our business, political or economic changes or other factors in a specific country or region could harm our future revenue, costs and expenses and financial condition.
We currently have significant operations in Korea, as well sales and technical support teams in various locations around the world. Many of our international sales may be denominated in foreign currencies. Because we do not currently engage in material foreign currency hedging transactions related to international sales, a decrease in the value of foreign currencies relative to the U.S. dollar could result in losses from transactions denominated in foreign currencies. We expect to continue expanding our international operations in the future. The successful management and expansion of our international operations requires significant human effort and the commitment of substantial financial resources. Further, our international operations may be subject to certain risks, disruptions and challenges that could materially harm our business and our operating results, including:
unexpected changes in laws, policies and regulatory requirements, including but not limited to regulations related to import-export control;
trade protection measures, tariffs, embargoes and other regulatory requirements which may affect our ability to import or export our products into or from various countries;
political unrest or instability, acts of terrorism or war in countries where we or our suppliers or customers have operations, including heightened security concerns relating to our operations in Korea stemming from North Korea’s nuclear weapons and ballistic missile programs and increased uncertainty regarding North Korea’s actions and possible responses from the international community;

political considerations that affect service provider and government spending patterns;
differing technology standards or customer requirements;
developing and customizing our products for foreign countries;
fluctuations in currency exchange rates, foreign exchange controls and restrictions on cash repatriation;
longer accounts receivable collection cycles and financial instability of customers;
requirements for additional liquidity to fund our international operations;
difficulties and excessive costs for staffing and managing foreign operations;
ineffective legal protection of our intellectual property rights in certain countries;
potentially adverse tax consequences; and
changes in a country’s or region’s political and economic conditions.
In addition, some of our customer purchase agreements are governed by foreign laws, which may differvary significantly from U.S. laws. We may be limited in our abilityquarter to enforce our rights under these agreements and to collect damages, if awarded. Any of these factors could harm our existing international operations and business or impair our ability to continue expanding into international markets.
We are subject to Korean foreign currency exchange rate risk.
We conduct significant business in Korea and as of December 31, 2016 our Korean subsidiary held more than half of our cash and cash equivalents, both of which subject us to Korean foreign currency exchange rate risk. Currently, we do not hold or issue foreign currency forward contracts, option contracts or other derivative financial instruments to mitigate the currency exchange rate risk. Our results of operations and our cash flows could be impacted by changes in foreign currency exchange rates.
A shortage of adequate component supply or manufacturing capacity could increase our costs or cause a delay in our ability to fulfill orders, and our failure to estimate customer demand properly may result in excess or obsolete component inventories that could adversely affect our gross margins.
Occasionally, we may experience a supply shortage, or a delay in receiving, certain component parts as a result of strong demand for the component parts and/or capacity constraints or other problems experienced by suppliers. If shortages or delays persist, the price of these components may increase, or the components may not be available at all, and we may also encounter shortages if we do not accurately anticipate our needs. Conversely, we may not be able to secure enough components at reasonable prices or of acceptable quality to build new products in a timely manner in the quantities or configurations needed. Accordingly, our revenue and gross margins could suffer until other sources can be developed. Our operating results would also be adversely affected if, anticipating greater demand than actually develops, we commit to the purchase of more components than we need. Furthermore, as a result of binding price or purchase commitments with suppliers, we may be obligated to purchase components at prices that are higher than those available in the current market. In the event that we become committed to purchase components at prices in excess of the current market price, our gross margins could decrease. In the past we experienced component shortages that adversely affected our financial results and in the future may continue to experience component shortages.
We rely on contract manufacturers for a portion of our manufacturing requirements.
We rely on contract manufacturers to perform a portion of the manufacturing operations for our products. These contract manufacturers build product for other companies, including our competitors. In addition, we do not have contracts in place with some of these providers and may not be able to effectively manage those relationships. We cannot be certain that our contract manufacturers will be able to fill our orders in a timely manner. We face a number of risks associated with this dependence on contract manufacturers including reduced control over delivery schedules, the potential lack of adequate capacity during periods of excess demand, poor manufacturing yields and high costs, quality assurance, increases in prices, and the potential misappropriation of our intellectual property. We have experienced in the past, and may experience in the future, problems with our contract manufacturers, such as inferior quality, insufficient quantities and late delivery of products.
We depend on a limited source of suppliers for several key components. If we are unable to obtain these components on a timely basis, we will be unable to meet our customers’ product delivery requirements, which would harm our business.

We currently purchase several key components from a limited number of suppliers. If any of our limited source of suppliers become insolvent, cease business or experience capacity constraints, work stoppages or any other reduction or disruption in output, they may be unable to meet our delivery schedules. Our suppliers may enter into exclusive arrangements with our competitors, be acquired by our competitors, stop selling their products or components to us at commercially reasonable prices, refuse to sell their products or components to us at any price or be unable to obtain or have difficulty obtaining components for their products from their suppliers. If we do not receive critical components from our limited source of suppliers in a timely manner, we will be unable to meet our customers’ product delivery requirements. Any failure to meet a customer’s delivery requirements could materially adversely affect our business, operating results and financial condition and could materially damage customer relationships.
Our target customer base is concentrated, and the loss of one or more of our customers could harm our business.
quarter.

The target customers for our products have substantial and complex networks that they traditionally expand in large increments on a periodic basis. Accordingly, our marketing efforts are focused primarily on prospective customers that may purchase our products as part of a large-scale network service providers that operate voice, datadeployment. Our target customers typically require a lengthy evaluation, testing and video communications networks. Thereproduct qualification process. Throughout this process, we are a limited number of potentialoften required to spend considerable time and incur significant expenses educating and providing information to prospective customers in our target market. Forabout the year ended December 31, 2016, three customers represented 16%, 14%uses and 10% of net revenue, respectively. For the year ended December 31, 2015, four customers represented 26%, 21% (a related-party), 15% and 10% of net revenue, respectively. We expect that a significant portionfeatures of our future revenue will depend on salesproducts. Even after a company makes the final decision to purchase our products, it could deploy our products over extended periods of time. The timing of deployment of our products tovaries widely, and depends on a limited number of customers.factors, including our customers’ skill sets, geographic density of potential subscribers, the degree of configuration and integration required to deploy our products, and our customers’ ability to finance their purchase of our products as well as their operations. The impact of the COVID-19 pandemic on our supply chain has increased the volatility of our deployment timeframes. As a result of any of these factors, our revenue for anyand operating results could vary significantly from quarter may be subject to significant volatility based on changes in orders from one or a small number of key customers. Any failure of one or more customers to purchase products from us for any reason, including any downturn in their businesses, would seriously harm our business, financial condition and results of operations. See Note 1(n) to the consolidated financial statements set forth in Part II, Item 8 of this report for additional information.

Industry consolidation may lead to increased competition and may harm our operating results.
There has been a trend toward industry consolidation in the communications equipment market for several years. We expect this trend to continue as companies attempt to strengthen or hold their market positions in an evolving industry and as companies are acquired or are unable to continue operations. We believe that industry consolidation may result in stronger competitors that are better able to compete as sole-source vendors for customers. This could have a material adverse effect on our business, financial condition and results of operations. Furthermore, rapid consolidation could result in a decrease in the number of customers we serve. Loss of a major customer could have a material adverse effect on our business, financial condition and results of operations.
quarter.

The market we serve is highly competitive and we may not be able to compete successfully.

Competition in communications equipment markets is intense. These markets are characterized by rapid change, converging technologies and a migration to networking solutions that offer superior advantages. We are aware of many companies in related markets that address particular aspects of the features and functions that our products provide. Currently, our primary competitors in our core business include Nokia,ADTRAN, Calix, Adtran, Huawei, Nokia and ZTE, among others. In our FiberLAN business, our competitors include TellabsCisco, Nokia and Cisco.Tellabs. In our Ethernet switching business, our competitors include Cisco, and Juniper. We also may face competition from other large communications equipment companies or other companies that may enter our markets in the future. In addition, a number of companies have introduced products that address the same network needs that our products and solutions address, both domestically and abroad.internationally. Many of our competitors have longer operating histories, greater name recognition, larger customer bases and greater financial, technical, sales and marketing resources than we do and may be able to undertake more extensive marketing efforts, adopt more aggressive pricing policies and provide more customer financing than we can. In particular, we are encountering price-focused competitors from Asia, especially China, which places pressure on us to reduce our prices. If we are forced to reduce prices in order to secure customers, we may be unable to sustain gross margins at desired levels or achieve profitability. Competitive pressures could result in increased pricing pressure, reduced profit margins, increased sales and marketing expenses and failure to increase, or the loss of, market share, any of which could reduce our revenue and adversely affect our financial results. Moreover, our competitors may foresee the course of market developments more accurately than we do and could develop new technologies that render our products less valuable or obsolete.


In our markets, principal competitive factors include:

(i) product performance;
(ii) interoperability with existing products;
(iii) scalability and upgradeability;
(iv) conformance to standards;
(v) breadth of services;
(vi) reliability;
(vii) ease of installation and use;
(viii) geographic footprints for products;
(ix) ability to provide customer financing;
(x) pricing;
(xi) technical support and customer service; and
(xii) brand recognition.

If we are unable to compete successfully against our current and future competitors, we may have difficulty obtaining or retaining customers, and we could experience price reductions, order cancellations, increased expenses and reduced gross margins, any of which could have a material adverse effect on our business, operations, financial condition, and liquidity.


We depend upon the development of new products and enhancements to existing products, and if we fail to predict and respond to emerging technological trends and customers’ changing needs, our operating results of operations.

and market share may suffer.

The markets for our products are characterized by rapidly changing technology, evolving industry standards, changes in end-user requirements, frequent new product introductions and changes in communications offerings from network service provider customers. Our future success largely depends on our ability to retainanticipate or adapt to such changes and recruit key personnel,to offer, on a timely and any failurecost-effective basis, products that meet changing customer demands and industry standards. We may not have sufficient resources to do so would harm our ability to meet key objectives.

Our future success depends upon the continued services of our Chief Executive Officersuccessfully and other key employees,accurately anticipate customers’ changing needs and our ability to identify, attracttechnological trends, manage long development cycles or develop, introduce and retain highly skilled technical, managerial, sales and marketing personnel who have critical industry experience and relationships that we rely on to build our business. The loss of the services of any of our key employees, including our Chief Executive Officer, could delay the development and production of ourmarket new products and negatively impactenhancements. The process of developing new technology is complex and uncertain, and if we fail to develop new products or enhancements to existing products on a timely and cost-effective basis, or if our abilitynew products or enhancements fail to maintain customer relationships, which would harmachieve market acceptance, our business, operations, financial condition and resultsliquidity would be materially adversely affected.

Because our products are complex and are deployed in complex environments, our products may have defects that we discover only after full deployment by our customers, which could have a material adverse effect on our business.

We produce highly complex products that incorporate leading-edge technology, including both hardware and software. Software often contains defects or programming flaws that can unexpectedly interfere with expected operations. In addition, our products are complex and are designed to be deployed in large quantities across complex networks. Because of operations. Moreover,the nature of these products, they can only be fully tested when completely deployed in large networks with high amounts of traffic, and there is no assurance that our inabilitypre-shipment testing programs will be adequate to detect all defects. As a result, our customers may discover errors or defects in our hardware or software, or our products may not operate as expected. If we are unable to cure a product defect, we could experience damage to our reputation, reduced customer satisfaction, loss of existing customers and failure to attract new customers, failure to achieve market acceptance, reduced sales opportunities, loss of revenue and retain sufficient qualified accounting personnel with expertise in U.S. GAAP following the Merger may adversely affect our ability to maintain an effective system of internal controls or our ability to produce reliable financial reports, which may materiallymarket share, increased service and adversely affect our business.

Any strategic acquisitions or investments we make could disrupt our operations and harm our operating results.
On an ongoing basis, we may evaluate acquisitions of, or investments in, complementary companies, products or technologies to supplement our internal growth, may acquire additional businesses, products or technologies in the future.
If we do complete future acquisitions, we could:
issue stock that would dilute our current stockholders’ percentage ownership;
consume a substantial portion of our cash resources;
incur substantial debt;
assume liabilities;
increase our ongoing operating expenses and level of fixed costs;
record goodwill and non-amortizable intangible assets that will be subject to impairment testing and potential periodic impairment charges;
incur amortization expenses related to certain intangible assets;
incur large and immediate write-offs; and

become subject to litigation.
Any acquisitions or investments that we make in the future will involve numerous risks, including:
difficulties in integrating the operations, technologies, products and personnel of the acquired companies;
unanticipated costs;
warranty costs, diversion of management’s timedevelopment resources, legal actions by our customers, and attention away from normal daily operations of the business and the challenges of managing larger and more widespread operations resulting from acquisitions;
difficultiesincreased insurance costs. Defects, integration issues or other performance problems in entering marketsour products could also result in which we have no or limited prior experience;
insufficient revenuesdamages to offset increased expenses associated with acquisitions and where competitors in such markets have stronger market positions; and
potential loss of key employees,our customers, distributors, vendors and other business partners of the companies we acquire following and continuing after announcement of acquisition plans.
Mergers and acquisitions of high-technology companies are inherently risky and subject to many factors outside of our control, and we cannot be certain that our previous or future acquisitions will be successful and will not materially adversely affect our business, operating results or financial condition. We do not know whether we will be able to successfully integrate the businesses, products, technologies or personnel that we might acquire in the future or that any strategic investments we make will meet our financial or other investment objectives. Any failure to do sootherwise. Our customers could seek damages for related losses from us, which could seriously harm our business, operations, financial condition and resultsliquidity. A product liability claim brought against us, even if unsuccessful, would likely be time consuming and costly. The occurrence of operations.
any of these problems would seriously harm our business, operations, financial condition and liquidity.

Sales to communications service providers are especially volatile, and weakness in sales orders from this industry maycould harm our operating resultsbusiness, operations, financial condition and financial condition.

liquidity.

Sales activity in the service provider industry depends upon the stage of completion of expanding network infrastructures, the availability of funding, and the extent to which service providers are affected by regulatory, economic and business conditions in the country of operations. Although some service providers may be increasing capital expenditures over the depressed levels that have prevailed over the last few years, weakness in orders from this industry could have a material adverse effect on our business, operating resultsoperations, financial condition and financial condition. Slowdownsliquidity. Changes in the general economy,technology, competition, overcapacity, changes in the service provider market, regulatory developments, adverse economic effects caused by the COVID-19 pandemic and constraints on capital availability have had a material adverse effect on many of our service provider customers, with many of these customers going out of business or substantially reducing their expansion plans. These conditions have materially harmed our business and operating results, and we expect that some or all of these conditions may continue for the foreseeable future. Finally, service provider customers typically have longer implementation cycles; require a broader range of serviceservices including design services; demand that vendors take on a larger share of risks; often require acceptance provisions, which can lead to a delay in revenue recognition; and expect financing from vendors. All these factors can add further risk to business conducted with service providers.

Compliance

We depend on a limited source of suppliers for several key components. If we are unable to obtain these components on a timely basis, we will be unable to meet our customers’ product delivery requirements, which would harm our business.

We currently purchase several key components from a limited number of suppliers. If any of our limited source of suppliers become insolvent, cease business or theexperience capacity constraints, work stoppages or any other reduction or disruption in output, they may be unable to meet our delivery schedules. Our suppliers may enter into exclusive arrangements with our competitors, be acquired by our competitors, stop selling their products or components to us at commercially reasonable prices, refuse to sell their products or components to us at any price or be unable to obtain or have difficulty obtaining components for their products from their suppliers. If we do not receive critical components from our limited source of suppliers in a timely manner, we will be unable to meet our customers’ product delivery requirements. Any failure to comply withmeet a customer’s delivery requirements could materially adversely affect our business, operations, and financial condition and liquidity and could materially damage customer relationships.The current and future environmental regulations could cause us significant expense.

worldwide shortage of semiconductors may exacerbate these risks.

We are subject to a variety of federal, state, local and foreign environmental regulations. If we fail to comply with any present and future regulations, we could be subject to future liabilities, the suspension of production or a prohibitionrely on the saleavailability of third-party licenses.

Many of our products are designed to include software or other intellectual property licensed from third parties. It may be necessary in the future to seek or renew licenses relating to various elements of the technology used to develop these products. In addition, such regulations


We cannot assure you that our existing or future third-party licenses will be available to us on commercially reasonable terms, if at all. Our inability to maintain or obtain any third-party license required to sell or develop our products and product enhancements could require us to incur other significant expenses to comply with environmental regulations, including expenses associated with the redesignobtain substitute technology of any non-compliant product. From time to time new regulations are enacted, and it is difficult to anticipate how such regulations will be implemented and enforced. For example, in 2003 the European Union enacted the Restriction on the Use of Certain Hazardous Substances in Electrical and Electronic Equipment Directive (RoHS) and the Waste Electrical and Electronic Equipment Directive (WEEE), for implementation in European Union member states. We are aware of similar legislation that is currently in forcelower quality or is being considered in the United States, as well as other countries, such as Japan and China. Our failure to comply with any of such regulatory requirementsperformance standards, or contractual obligations could result in our being liable for costs, fines, penalties and third-party claims, and could jeopardize our ability to conduct business in countries in the jurisdictions where these regulations apply.

Adverse resolution of litigation may harm our operating results or financial condition.
We are a party to various lawsuits and claims in the normal course of our business. Litigation can be expensive, lengthy, and disruptive to normal business operations. Moreover, the results of complex legal proceedings are difficult to predict. An

unfavorable resolution of a particular lawsuit could have a material adverse effect on our business, operating results and financial condition.
at greater cost.

Our intellectual property rights maycould prove difficult to protect and enforce.

We generally rely on a combination of copyrights, patents, trademarks and trade secret laws and commercial agreements containing restrictions on disclosure and other appropriate terms to protect our intellectual property rights. We also enter into confidentiality, or licenseemployee, contractor and commercial agreements with our employees, consultants and corporate partners, and control access to and distribution of our proprietary information.information and use of our intellectual property and technology. Despite our efforts to protect our proprietary rights, unauthorized parties, including those affiliated with foreign governments, may attempt to copy or otherwise obtain and use our products, technology or technology.intellectual property. Monitoring unauthorized use of our technology and intellectual property is difficult, and we do not know whether the steps we have taken will prevent unauthorized use of our technology, particularly in foreign countries or jurisdictions where the laws may not protect our proprietary rights as extensively as in the United States. We cannot assure you that our pending, or any future, patent applications will be granted, that any existing or future patents will not be challenged, invalidated, or circumvented, or that any existing or future patents will be enforceable.enforceable or that infringement by third parties will even be detected. While we are not dependent on any individual patents, if we are unable to protect our proprietary rights, we may find ourselves at a competitive disadvantage to others who need not incur the substantial expense, time and effort required to create the innovative products.

There are additional risks to our intellectual property as a result of our international business operations.

We may face risks to our technology and intellectual property as a result of our conducting strategic business discussions outside of the United States, and particularly in jurisdictions that do not have comparable levels of protection of corporate proprietary information and assets such as intellectual property, trademarks, trade secrets, know-how and customer information and records. While these risks are common to many companies, conducting business in certain foreign jurisdictions, housing technology, data and intellectual property abroad, or licensing technology to joint ventures with foreign partners may have more significant exposure. For example, we have shared intellectual properties with entities in China, South Korea, India, Thailand, and Vietnam pursuant to confidentiality agreements in connection with discussions on potential strategic collaborations, which may expose us to material risks of theft of our proprietary information and other intellectual property, including technical data, manufacturing processes, data sets or other sensitive information. Our technology may be reverse engineered by the parties or other parties, which could result in our patents being infringed or our know-how or trade secrets stolen. The risk can be by direct intrusion wherein technology and intellectual property is stolen or compromised through cyber intrusions or physical theft through corporate espionage, including with the assistance of insiders, or via more indirect routes.

Claims that our current or future products or components contained in our products infringe the intellectual property rights of others may be costly and time consuming to defend and could adversely affect our ability to sell our products.

The telecommunicationscommunications equipment industry is characterized by the existence of a large number of patents and frequent claims and related litigation regarding patent, copyright, trademark and other intellectual property rights, whichthat may relate to technologies and related standards that are relevant to us. From time to time, we receive correspondence from companies claiming that our products are using technology covered by or related to the intellectual property rights of these companies and inviting us to discuss or demanding licensing or royalty arrangements for the use of the technology or seeking payment for damages, injunctive relief and other available legal remedies through litigation. These companies also include third-party non-practicing entities (also known as patent trolls) that focus on extracting royalties and settlements by enforcing patent rights.rights through litigation or the threat of litigation. These companies typically have little or no product revenues and therefore our patents maycould provide little or no deterrence against such companies filing patent infringement lawsuits against us. In addition, third parties have initiated and maycould continue to initiate litigation against our manufacturers, suppliers, distributors or even our customers alleging infringement or misappropriation of their proprietary rights with respect to existing or future products, or components of our products. For example, various proceedings have been commenced against Broadcom Corporation and other parties alleging patent infringement are routinely commenced in various jurisdictions against manufacturers and consumers of products in the wireless and broadband communications industry. In some cases, the courts have issued rulings adverse to Broadcom enjoining Broadcomsuch manufacturers and customers, which can result in monetary damages that we are obligated to indemnify or that may impact the cost and availability of components or sales of our products. Courts may also issue injunctions preventing manufacturers from offering, distributing, using or importing products that include the challenged intellectual property. Although we are not party to these proceedings, adverseAdverse rulings or injunctive relief awarded against Broadcom or other key suppliers of components for our products maycould result in delays or stoppages in the shipment of affected components, or require us to recall, modify or redesign our products containing such components. Regardless of the merit of claims against us or our manufacturers, suppliers, distributors or customers, intellectual property litigation can be time consuming and costly, and result in the diversion of the attention of technical and management personnel. Any such litigation could force us to stop manufacturing, selling, distributing, exporting, incorporating or using products or components that include the challenged intellectual property, or to recall, modify or redesign such products. In addition, if a party accuses us of infringing upon its proprietary rights, we may have to enter into royalty or licensing agreements, which may not be available on terms acceptable to us, if at all. If we are unsuccessful in any such litigation, we could be subject to significant liability for damages and loss of our proprietary rights. Any of these events or results could have a material adverse effect on our business, operations, financial condition and results of operations.liquidity.


We rely on

Due to the availability of third party licenses.

Manyinternational nature of our products are designed to include softwarebusiness, political or economic changes or other intellectual property licensed from third parties. It may be necessaryfactors in thea specific country or region could harm our future to seek or renew licenses relating to various elements of the technology used to develop these products. revenue, costs and expenses, and financial condition.

We cannot assure you that our existingcurrently have significant operations in Canada, South Korea, India and future third-party licenses will be available to us on commercially reasonable terms, if at all. Our inability to maintain or obtain any third-party license required to sell or develop our products and product enhancements could require us to obtain substitute technology of lower quality or performance standards, or at greater cost.

The long and variable sales cycles for our products may cause revenue and operating results to vary significantly from quarter to quarter.
The target customers for our products have substantial and complex networks that they traditionally expand in large increments on a periodic basis. Accordingly, our marketing efforts are focused primarily on prospective customers that may purchase our products as part of a large-scale network deployment. Our target customers typically require a lengthy evaluation, testing and product qualification process. Throughout this process, we are often required to spend considerable time and incur significant

expense educating and providing information to prospective customers about the uses and features of our products. Even after a company makes the final decision to purchase our products, it may deploy our products over extended periods of time. The timing of deployment of our products varies widely, and depends on a number of factors, including our customers’ skill sets, geographic density of potential subscribers, the degree of configuration and integration required to deploy our products, and our customers’ ability to finance their purchase of our productsVietnam, as well as their operations. As a result of any of these factors,sales and technical support teams in various locations around the world. We continue to consider opportunities to expand our revenueinternational operations in the future. The successful management and operating results may vary significantly from quarter to quarter.
Decreased effectiveness of share-based compensation could adversely affect our ability to attract and retain employees.
We have historically used stock options as a key componentexpansion of our employee compensation programinternational operations requires significant human effort and the commitment of substantial financial resources. Further, our international operations may be subject to certain risks, disruptions and challenges that could materially harm our business, operations, financial condition, and liquidity, including: (i) unexpected changes in orderlaws, policies and regulatory requirements, including but not limited to align the interests of our employees with the interests of our stockholders, encourage employee retentionregulations related to import-export control; (ii) trade protection measures, tariffs, embargoes and provide competitive compensation and benefit packages. If the trading price of our common stock declines, this would reduce the value of our share-based compensation to our present employees andother regulatory requirements which could affect our ability to retainimport or export our products into or from various countries; (iii) political unrest or instability, acts of terrorism or war in countries where we or our suppliers or customers have operations, including heightened security concerns stemming from North Korea in relation to our operations in South Korea; (iv) political considerations that affect service provider and government spending patterns; (v) heightened political tensions between the U.S. and China regarding the COVID-19 pandemic, trade practices and intellectual property rights; (vi) differing technology standards or customer requirements; (vii) developing and customizing our products for foreign countries; (viii) fluctuations in currency exchange rates, foreign exchange controls and restrictions on cash repatriation; (ix) longer accounts receivable collection cycles and financial instability of customers; (x) requirements for additional liquidity to fund our international operations; (xi) pandemics, epidemics and other public health crises, such as the COVID-19 pandemic; (xii) difficulties and excessive costs for staffing and managing foreign operations; (xiii) ineffective legal protection of our intellectual property rights in certain countries; (xiv) potentially adverse tax consequences; and (xv) changes in a country’s or region’s political and economic conditions.

In addition, some of our customer purchase agreements are governed by foreign laws and regulations, which may differ significantly from the laws and regulations of the United States. We may be limited in our ability to enforce our rights under these agreements and to collect damages, if awarded. Any of these factors could harm our existing international operations and business or attract prospective employees. Difficulties relatingimpair our ability to obtaining stockholder approvalcontinue expanding into international markets.

We face exposure to foreign currency exchange rate fluctuations.

We conduct significant business in South Korea, Japan, India, Vietnam, Europe, Middle East and Latin America, all of equity compensation plans could also make it harderwhich subject us to foreign currency exchange rate risk.

We have in the past and may in the future undertake a hedging program to mitigate the impact of foreign currency exchange rate fluctuations. The use of such hedging activities may not offset any or more expensive for usthan a portion of the adverse financial effects of unfavorable movements in foreign currency exchange rates over the limited time the hedges are in place. Moreover, the use of hedging instruments may introduce additional risks if we are unable to grant share-based paymentsstructure effective hedges with such instruments, which could adversely affect our business, operations, financial condition, and liquidity.

As such, our results of operations and our cash flows could be impacted by changes in foreign currency exchange rates.

Risks Related to employeesour Industry

The telecommunications networking business requires the application of complex revenue and expense recognition rules and the regulatory environment affecting generally accepted accounting principles is uncertain. Changes in financial accounting standards or practices may cause adverse, unexpected financial reporting fluctuations and harm our business.

The nature of our business requires the future.

Our industryapplication of complex revenue and expense recognition rules and the current regulatory environment affecting U.S. GAAP is uncertain. Significant changes in U.S. GAAP could affect our financial statements going forward and may cause adverse, unexpected financial reporting fluctuations and harm our operating results. U.S. GAAP is subject to interpretation by the Financial Accounting Standards Board, the Securities and Exchange Commission (SEC) and various bodies formed to promulgate and interpret appropriate accounting principles. In addition, we have in the past and may in the future need to significantly change our customer contracts, accounting systems and processes when we adopt future or proposed changes in accounting principles. The cost and effect of these changes may negatively impact our results of operations during the periods of transition.

Changes in government regulations whichrelated to our business could harm our business.

operations, financial condition, and liquidity.

Our operations are subject to various laws and regulations, including those regulations promulgated by the FCC.Federal Communications Commission (“FCC”). The FCC has jurisdiction over the entire communications industry in the United States and, as a result, our existing and future products and our customers’ products are subject to FCC rules and regulations. Changes to current FCC rules and regulations and future FCC rules and regulations could negatively affect our business. Non-compliance with the FCC’s rules and regulations would expose us to potential enforcement actions, including monetary


forfeitures, and could damage our reputation among potential customers.The uncertainty associated with future FCC decisions may cause network service providers to delay decisions regarding their capital expenditures for equipment for broadband services. In addition, international regulatory bodies establish standards that may govern our products in foreign markets. The SEC has adopted disclosure rules regarding the use of “conflict minerals” mined from the Democratic Republic of Congo and adjoining countries (DRC) and procedures regarding a manufacturer’s efforts to prevent the sourcing of such conflict minerals. These rules may have the effect of reducing the pool of suppliers who can supply DRC “conflict free” components and parts, and we may not be able to obtain DRC conflict free“conflict free” products or supplies in sufficient quantities for our operations. Also, we may face reputational challenges with our customers, stockholders and other stakeholders if we are unable to sufficiently verify the origins for the conflict minerals used in our products. In addition, governments and regulators in many jurisdictions have implemented or are evaluating regulations relating to cyber security, privacy and data protection, which can affect the markets and requirements for networking and communications equipment. We are unable to predict the scope, pace or financial impact of government regulations and other policy changes that could be adopted in the future, any of which could negatively impact our operations and costs of doing business. Because of our smaller size, legislation or governmental regulations can significantly increase our costs and affect our competitive position. Changes to or future domestic and international regulatory requirements could result in postponements or cancellations of customer orders for our products and services, which wouldcould harm our business, operations, financial condition and results of operations.liquidity. Further, we cannot be certain that we will be successful in obtaining or maintaining regulatory approvals that may,could, in the future, be required to operate our business.

Industry consolidation may lead to increased competition and could harm our operating results.

There has been a trend toward industry consolidation in the communications equipment market for several years. We expect this trend to continue as companies attempt to strengthen or hold their market positions in an evolving industry and as companies are acquired or are unable to continue operations. We believe that industry consolidation may result in stronger competitors that are better able to compete as sole-source vendors for customers. This could have a material adverse effect on our business, operations, financial condition, and liquidity. Furthermore, rapid consolidation could result in a decrease in the number of customers we serve. The loss of a major customer could have a material adverse effect on our business, operations, financial condition, and liquidity.

Risks Related to our Common Stock

DASAN Networks, Inc. (“DNI”) owns a significant amount of our outstanding common stock and has the ability to exert significant influence or control over any matters that require stockholder approval, including the election of directors and the approval of certain transactions, and DNI’s interests may conflict with our interests and the interests of other stockholders.

As of December 31, 2021, DNI owned approximately 36.7% of the outstanding shares of our common stock, representing a significant amount of the votes entitled to be cast by the holders of our outstanding common stock at a stockholder meeting. Due to its significant ownership percentage of our common stock, DNI has the ability to substantially influence or control the outcome of any matter submitted for the vote of our stockholders, including the election of directors and the approval of certain transactions. The interests of DNI may conflict with the interests of our other stockholders or with holders of our indebtedness and may cause us to take actions that our other stockholders or holders of our indebtedness do not view as beneficial.

DNI’s large concentration of stock ownership may make it more difficult for a third party to acquire us or discourage a third party from seeking to acquire us. Any potential third-party acquirer would most likely need to negotiate any such transaction with DNI, and the interests of DNI with respect to such transaction may be different from the interests of our other stockholders or with holders of our indebtedness.

Additionally, two of the Company’s directors serve as executive officers of DNI – Min Woo Nam is the Chief Executive Officer and Chairman of the Board of Directors of DNI and Choon Yul Yoo is the Chief Operating Officer of DNI. Messrs. Nam and Yoo owe fiduciary duties to us and, in addition, have duties to DNI. As a result, these directors may face real or apparent conflicts of interest with respect to matters affecting both us and DNI.

There is a limited public market of our common stock.

There is a limited public market for our common stock. The average daily trading volume in our common stock during the 12 months ended December 31, 2021 was approximately 125,000 shares per day. We cannot provide assurances that a more active trading market will develop or be sustained. As a result of low trading volume in our common stock, the purchase or sale of a relatively small number of shares of our common stock could result in significant price fluctuations and it may be difficult for holders to sell their shares without depressing the market price of our common stock.

DNI, our largest stockholder, owned approximately 10.1 million shares of our common stock as of December 31, 2021 and such shares are registered with the SEC for resale. Its shares became eligible for resale without restriction as to volume limitations. Our stock price could suffer a significant decline as a result of any sudden increase in the number of shares sold in


the public market or market perception that the increased number of shares available for sale will exceed the demand for our common stock.

We do not expect to declare or pay dividends in the foreseeable future.

We do not expect to declare or pay dividends in the foreseeable future, as we anticipate that we will invest future earnings in the development and growth of our business. Therefore, holders of our common stock will not receive any return on their investment unless they sell their securities, and holders may be unable to sell their securities on favorable terms or at all.

General Risk Factors

We may need additional capital, and we cannot be certain that additional financing will be available.

In January 2021, we raised approximately $59.5 million in an equity offering. Refer to Note 9 Stockholders’ Equity, in the Notes to Consolidated Financial Statements, for more detail. We need sufficient capital to fund our ongoing operations and may require additional financing in the future to expand our business, acquire assets or repay or refinance our existing debt. Our ability to obtain financing will depend, among other things, on our development efforts, business plans, operating performance and condition of the capital markets at the time we seek financing. We cannot assure you that additional financing will be available to us on favorable terms when required, or at all. If we raise additional funds through the issuance of equity, equity-linked or debt securities, those securities may have rights, preferences or privileges senior to the rights of our common stock, and our stockholders may experience dilution.

If we need additional capital and cannot raise it on acceptable terms, we may not be able to, among other things: (i) maintain existing operations; (ii) pay ordinary expenses; (iii) fund our business expansion or product innovation; (iv) pursue future business opportunities, including acquisitions; (v) respond to unanticipated capital requirements; (vi) repay or refinance our existing debt; (vii) hire, train and retain employees; or (viii) respond to competitive pressures or unanticipated working capital requirements.

Our failure to do any of these things could seriously harm our business, financial condition, liquidity and operating results. In addition, we may be required to reduce the scope of our planned product development and sales and marketing efforts beyond the reductions that we have previously taken, and reduce operations in low margin regions, including reductions in headcount, which could have a material adverse effect on our business, operations, financial condition and liquidity.

Our future operating results are difficult to predict and our stock price may continue to be volatile.

As a result of a variety of factors discussed in this Annual Report on Form 10-K, our revenues for a particular quarter are difficult to predict. Our revenue and operating results may vary significantly from quarter to quarter due to a number of factors, many of which are outside of our control. The primary factors that could affect our results of operations include the following: (i) commercial acceptance of our products and services; (ii) fluctuations in demand for network access products; (iii) fluctuation in gross margin; (iv) our ability to attract and retain qualified and key personnel; (v) the timing and size of orders from customers; (vi) the ability of our customers to finance their purchase of our products as well as their own operations; (vii) new product introductions, enhancements or announcements by our competitors; (viii) our ability to develop, introduce and ship new products and product enhancements that meet customer requirements in a timely manner; (ix) changes in our pricing policies or the pricing policies of our competitors; (x) the loss of or failure to renew on commercially reasonable terms any third-party licenses necessary for or relating to our products; (xi) the ability of our company and our contract manufacturers to attain and maintain production volumes and quality levels for our products; (xii) our ability to obtain sufficient supplies of sole or limited source components; (xiii) increases in the prices of the components we purchase, or quality problems associated with these components; (xiv) unanticipated changes in regulatory requirements which may require us to redesign portions of our products; (xv) changes in accounting rules; (xvi) integrating and operating any acquired businesses; (xvii) our ability to achieve targeted cost reductions; (xviii) how well we execute on our strategy and operating plans; (xix) general economic conditions as well as those specific to the communications, internet and related industries; and (xx) the economic uncertainty created by the ongoing COVID-19 pandemic, including its potentially adverse impact on all the foregoing factors.

Any of the foregoing factors, or any other factors discussed elsewhere herein, could have a material adverse effect on our business, operations, financial condition and liquidity that could adversely affect our stock price. Further, the ongoing COVID-19 pandemic has resulted in severe disruption and volatility in the financial markets. We anticipate that our stock price and trading volume may continue to be volatile in the future, whether due to the factors described above, volatility in public stock markets generally (particularly in the technology sector) or otherwise.

Strategic acquisitions or investments that we have made or that we could pursue or make in the future may disrupt our operations and harm our business, operations, financial condition, and liquidity.

As part of our business strategy, we have made investments in and acquired other companies, including Optelian and RIFT in 2021, that we believe are complementary to our core business. In the future we may continue to make investments in or acquire


other companies or complementary solutions or technologies. Any such acquisition or investment may divert the attention of management and cause us to incur various expenses in identifying, investigating, and pursuing suitable opportunities, whether or not the transactions are completed, and may result in unforeseen operating difficulties and expenditures. These transactions could also result in dilutive issuances of equity securities, the incurrence of debt or assumption of liabilities, and increase our risk of litigation exposure, which could adversely affect our operating results. In addition, if the resulting business from such a transaction fails to meet our expectations, our operating results, business, and financial condition may suffer or we may be exposed to unknown risks or liabilities.

Additionally, any significant acquisition would require the consent of our lenders. Any failure to receive such consent could delay or prohibit us from acquiring companies that we believe could enhance our business. Furthermore, we may dedicate significant time and capital resources in the pursuit of acquisition opportunities and may be unable to find and identify desirable acquisition targets or business opportunities or be successful in entering into an agreement with any particular strategic partner.

Upon the closing of any acquisition transaction, we will need to integrate the acquired organization and its products and services with our legacy operations. The integration process may be expensive, time-consuming and a strain on our resources and our relationships with employees, customers, distributors and suppliers, and ultimately may not be successful. The benefits or synergies we may expect from the acquisition of complementary or supplementary businesses may not be realized to the extent or in the time frame we initially anticipated. Mergers and acquisitions of high-technology companies are inherently subject to increased risk and to many factors outside of our control, and we cannot be certain that our previous or future acquisitions will be successful and will not materially adversely affect our business, operations, financial condition, and liquidity. Any failure to successfully acquire and integrate acquired organizations and their products and services could seriously harm our business, operations, financial condition, and liquidity.

Some of the risks that could affect our ability to successfully integrate acquired businesses, including Optelian and Rift’s telecommunication systems business, include those associated with: (i) failure to successfully further develop the acquired products or technology; (ii) insufficient revenues to offset increased expenses associated with acquisitions and where competitors in such markets have stronger market positions; (iii) conforming the acquired company’s standards, policies, processes, procedures and controls with our operations; (iv) difficulties in entering markets in which we have no or limited prior experience; (v) difficulties in integrating the operations, technologies, products and personnel of the acquired companies; (vi) coordinating new product and process development, especially with respect to highly complex technologies; (vii) potential loss of key employees, customers, distributors, vendors and other business partners of the companies we acquire following and continuing after the announcement of acquisition plans or transactions; (viii) hiring and training additional management and other critical personnel; (ix) in the case of foreign acquisitions, the need to integrate operations across different cultures and languages and to address the particular economic, currency, political and regulatory risks associated with specific countries; (x) increasing the scope, geographic diversity and complexity of our operations; (xi) diversion of management’s time and attention away from normal daily operations of the business and the challenges of managing larger and more widespread operations resulting from acquisitions; (xii) consolidation of facilities, integration of the acquired company’s accounting, human resource and other administrative functions and coordination of product, engineering and sales and marketing functions; (xiii) the geographic distance between the companies; (xiv) failure to comply with covenants related to the acquired business; (xv) unknown, underestimated, and/or undisclosed liabilities for activities of the acquired company before the acquisition, including patent and trademark infringement claims, violations of laws, employment claims, pension liabilities, commercial disputes, tax liabilities and other known and unknown liabilities; (xvi) litigation or other claims in connection with the acquired company, including claims for terminated employees, customers, former stockholders or other third parties; and (xvii) the disruption, economic and otherwise, created by the on-going COVID-19 pandemic, including its potentially compounding effect on all the foregoing factors.

If demand for our products and solutions does not develop as we anticipate, then our business operations, financial condition, and liquidity will be adversely affected.

Our future revenue depends significantly on our ability to successfully develop, enhance and market our products and solutions to our target markets. Most network service providers have made substantial investments in their current infrastructure, and they may elect to remain with their current architectures or to adopt new architectures in limited stages or over extended periods of time. A decision by a customer to purchase our products will involve a significant capital investment. We must convince our service provider customers that they will achieve substantial benefits by deploying our products for future upgrades or expansions. We may experience difficulties with product reliability, partnering, and sales and marketing efforts that could adversely affect our business and divert management attention and resources from our core business. We do not know whether a viable market for our products and solutions will develop or be sustainable in our businesses. If these markets do not develop or develop more slowly than we expect, including as a result of conditions created by the ongoing COVID-19 pandemic, our business, operations, financial condition and liquidity will be materially harmed.


Increased tariffs on products and goods that we purchase from off-shore sources (particularly Chinese sources) and changes in international trade policies and relations could have an adverse effect on our customers and operating results.

The pricing of our products to customers and our ability to conduct business with certain customers can be affected by changes in U.S. and other countries’ trade policies. For example, before the trade deal was signed between the U.S. and China on January 15, 2020, the United States had imposed tariffs on a wide-range of products and goods manufactured in China that are directly or indirectly imported into the United States. In response, various countries and economic regions announced plans or intentions to impose retaliatory tariffs on a wide-range of products they import from the United States. Any newly imposed, announced and threatened U.S. tariffs and retaliatory tariffs could have the effect of increasing the cost of materials we use to manufacture certain products, which could result in lower margins. The tariffs could also result in disruptions to our supply chain, as suppliers struggle to fill orders from companies trying to purchase goods in bulk ahead of announced tariffs. Although we believe that the incremental costs to us of these tariffs were immaterial, if new tariffs are imposed or if new tariffs apply to additional categories of components used in our manufacturing activities, and if we are unable to pass on the costs of tariffs to our customers, our operating results would be harmed.

Changes in political environments, governmental policies, international trade policies and relations, including as a result of tensions between the United States and China regarding the COVID-19 pandemic, trade practices and the protection of intellectual property rights, could result in revisions to laws or regulations or their interpretation and enforcement, trade sanctions, or retaliatory actions by China in response to U.S. actions, which could have an adverse effect on our customers, business plans and operating results.      

We rely on contract manufacturers for a portion of our manufacturing requirements.

We rely on contract manufacturers to perform a portion of the manufacturing operations for our products. These contract manufacturers build products for other companies, including our competitors. In addition, we do not have contracts in place with some of these providers and may not be able to effectively manage those relationships. We cannot be certain that our contract manufacturers will be able to fill our orders in a timely manner. We face a number of risks associated with this dependence on contract manufacturers including reduced control over delivery schedules, the potential lack of adequate capacity during periods of excess demand, poor manufacturing yields and high costs, quality assurance, increases in prices, and the potential misappropriation of our intellectual property. We have experienced in the past, and may experience in the future, problems with our contract manufacturers, such as inferior quality, insufficient quantities and late delivery of products.

We face supply chain risk, and our failure to estimate customer demand properly could result in excess or obsolete component inventories that could adversely affect our gross margins.

Occasionally, we may experience a supply shortage, or a delay in receiving, certain component parts as a result of strong demand for the component parts and/or capacity constraints or other problems experienced by suppliers. If shortages or delays persist, the price of these components may increase, or the components may not be available at all, and we may also encounter shortages if we do not accurately anticipate our needs. Conversely, we may not be able to secure enough components at reasonable prices or of acceptable quality to build new products in a timely manner in the quantities or configurations needed. Accordingly, our revenue and gross margins could suffer until other sources can be developed. During 2021, we experienced disruptions in our supply chain, and we anticipate that such disruptions will continue in 2022. These supply issues have limited our ability to supply demand of certain customers. It is difficult to predict the future impact of these ongoing supply issues. Our operating results would also be adversely affected if, anticipating greater demand than actually develops, we commit to the purchase of more components than we need. Furthermore, as a result of binding price or purchase commitments with suppliers, we may be obligated to purchase components at prices that are higher than those available in the current market. In the event that we become committed to purchase components at prices in excess of the current market price, our gross margins could decrease. In the past we experienced component shortages that adversely affected our financial results and, in the future, may continue to experience component shortages.

The loss of a key customer or a significant deterioration in the financial condition of a key customer could have a material adverse effect on the Company’s results of operations.

The Company’s revenue is dependent on several key customers. A loss of one or more of the Company’s key customers, or a dispute or litigation with one of these key customers could affect adversely our revenue and results of operations. A significant deterioration in the financial condition or bankruptcy filing of a key customer could affect adversely the Company’s business, results of operations, and financial condition.

In addition, the Company is subject to credit risk associated with the concentration of accounts receivable from its key customers. As of December 31, 2021, two customers represented 26% and 10% of net accounts receivable. As of December 31, 2021, the Company has an allowance for doubtful account of $16.7 million related to one customer. If one or more of the Company’s top customers were to become bankrupt or insolvent or otherwise were unable to pay for the products and services provided by the Company, including as a result of conditions created by the on-going COVID-19 pandemic, the Company may incur significant write-offs of accounts receivable or incur other impairment charges, which may have a material adverse effect on the Company’s results of operations.


We have experienced significant turnover with respect to our executives and our board, and our business could be adversely affected by these and other transitions in our senior management team or if any future vacancies cannot be filled with qualified replacements in a timely manner.

We have experienced significant turnover on our executive team and board since 2018. As a result of this turnover, our remaining management team has been required to take on increased responsibilities, which could divert attention from key business areas. If we continue to experience similar turnover in the future, we may be unable to timely replace the talent and skills of our management team and directors.  

Management transitions are often difficult and inherently cause some loss of institutional knowledge, which could negatively affect our results of operations and financial condition. Our ability to execute our business strategies may be adversely affected by the uncertainty associated with these transitions and the time and attention from the board and management needed to fill any future vacant roles could disrupt our business. If we are unable to successfully identify and attract adequate replacements for future vacancies in our management roles in a timely manner, we could experience increased employee turnover and harm to our business, growth, financial condition, results of operations and cash flows. We face significant competition for executives with the qualifications and experience we seek.

Further, we cannot guarantee that we will not face similar turnover in the future. Our senior management’s knowledge of our business and industry would be difficult to replace, and any further turnover could negatively affect our business, growth, financial conditions, results of operations and cash flows.

Decreased effectiveness of share-based compensation could adversely affect our ability to attract and retain employees.

We have historically used equity incentives, including stock options, as a key component of our employee compensation program in order to align the interests of our employees with the interests of our stockholders, encourage employee retention and provide competitive compensation and benefit packages. If the trading price of our common stock declines, this would reduce the value of our share-based compensation to our present employees and could adversely affect our ability to retain existing or attract prospective employees. Difficulties relating to obtaining stockholder approval of equity compensation plans could also make it harder or more expensive for us to grant share-based payments to employees in the future.

Our success largely depends on our ability to retain and recruit key personnel, and any failure to do so could harm our ability to meet key objectives.

Our future success depends upon the continued services of our Chief Executive Officer and other key employees, and our ability to identify, attract and retain highly skilled technical, managerial, sales and marketing personnel who have critical industry experience and relationships that we rely on to build and operate our business. As discussed elsewhere in these Risk Factors, we have experienced significant turnover on our executive team and board since 2018, including the departures of our former Chief Executive Officer and Chief Financial Officer. The loss of the services of any of our key employees or executive officers could delay the development and production of our products and negatively impact our ability to maintain customer relationships, which could harm our business, operations, financial condition and liquidity.

Our collection, processing, storage, use, and transmission of personal data could give rise to liabilities as a result of governmental regulation, increasing legal requirements.

We collect, process, store, use, and transmit personal data on a daily basis. Personal data is increasingly subject to legal and regulatory protections around the world, which vary widely in approach and which possibly conflict with one another. In recent years, for example, U.S. legislators and regulatory agencies, such as the Federal Trade Commission, as well as U.S. states have increased their focus on protecting personal data by law and regulation and have increased enforcement actions for violations of privacy and data protection requirements. The State of California recently adopted the California Consumer Protection Act (“CCPA”), which went into effect on January 1, 2020. The European Commission also approved and adopted the General Data Protection Regulation (GDPR), a data protection law, which became effective in May 2018. These data protection laws and regulations are intended to protect the privacy and security of personal data that is collected, processed, and transmitted in or from the relevant jurisdiction. Both the CCPA and the GDPR established new requirements applicable to the processing of personal data, afford new data protection rights to individuals and impose significant penalties for data breaches. Individuals also have a right to compensation under the GDPR for financial or non-financial losses. In July 2020, the EU-U.S. Privacy Shield framework which allowed U.S. companies that self-certify to the U.S. Department of Commerce and publicly commit to comply with specified requirements to import personal data from the EU was invalidated as a GDPR compliance mechanism by the European Court of Justice (“ECJ”). These developments create some uncertainty. Ensuring compliance with these laws is an ongoing commitment that involves substantial costs, which could otherwise adversely affect our business operations and negatively impact our financial position or cash flows. Any failure to comply with applicable regulations could also result in regulatory enforcement actions against us, subject us to negative publicity and significant penalties and ultimately cause an adverse effect on our business.


If we experience a significant disruption in, or breach in security of, our information technology systems, our business could be adversely affected.

We rely on several centralized information technology systems to provide products and services, maintain financial records, process orders, manage inventory, process shipments to customers and operate other critical functions. If we experience a prolonged system disruption in the information technology systems that involve our interactions with customers or suppliers, it could result in the loss of sales and customers and significant incremental costs, which could adversely affect our business. In addition, our information technology systems maycould be susceptible to damage, disruptions or shutdowns due to power outages, hardware failures, computer viruses, attacks by computer hackers, telecommunication failures, user errors, catastrophes or other unforeseen events. Furthermore, security breaches of our information technology systems could result in the misappropriation or unauthorized disclosure of confidential information belonging to the company or our employees, partners, customers or suppliers, which could result in significant financial, legal or reputational damage to the company.

Man-made problemsCompany. In response to the COVID-19 pandemic, a large portion of our workforce worked remotely, and future remote working could exacerbate any of the foregoing risks.

Compliance or the failure to comply with current and future environmental regulations could cause us significant expense.

We are subject to a variety of federal, state, local and foreign environmental regulations. If we fail to comply with any present or future regulations, we could be subject to liabilities, the suspension of production or prohibitions on the sale of our products. In addition, such regulations could require us to incur other significant expenses to comply with environmental regulations, including expenses associated with the redesign of any non-compliant product. From time to time new regulations are enacted, and it is difficult to anticipate how such regulations will be implemented and enforced and the impact that they could have on our operations or results. For example, in 2003 the European Union enacted the Restriction on the Use of Certain Hazardous Substances in Electrical and Electronic Equipment Directive and the Waste Electrical and Electronic Equipment Directive, for implementation in European Union member states. We are aware of similar legislation that is currently in force or has been considered in the U. S., as well as other countries, such as cybersecurity attacks, computer virusesJapan and China. Implementation of and compliance with these laws may be costly or terrorism may disrupt our operations and harmcould otherwise adversely affect our business reputationoperations, which could negatively impact our financial position or cash flows. Our failure to comply with any such regulatory requirements or contractual obligations could result in us being liable for costs, fines, penalties or third-party claims, and operating results

Despitecould jeopardize our implementationability to conduct business in countries or jurisdictions where such regulations apply.

Failure to comply with the U.S. Foreign Corrupt Practices Act and similar laws associated with our international activities could subject us to significant civil or criminal penalties.

Failure to comply with the Foreign Corrupt Practices Act could subject us to significant civil or criminal penalties. A significant portion of network security measures, our networkrevenues is generated from sales outside of the United States. As a result, we are subject to the U.S. Foreign Corrupt Practices Act (the “FCPA”). The FCPA generally prohibits U.S. companies and their intermediaries from making corrupt payments to foreign officials for the purpose of obtaining or keeping business or otherwise obtaining favorable treatment and requires companies to maintain adequate record-keeping and internal accounting practices to accurately reflect the transactions of the company. The FCPA applies to companies, individual directors, officers, employees and agents. Under the FCPA, U.S. companies may be vulnerableheld liable for the corrupt actions taken by employees, strategic or local partners or other representatives. If we or our intermediaries fail to cybersecurity attacks, computer viruses, break-inscomply with the requirements of the FCPA or similar legislation, governmental authorities in the U.S. and similar disruptions. Cybersecurity attacks,elsewhere could seek to impose civil and/or criminal fines and penalties which could have an adverse effect on our results of operations, financial condition and cash flow.

Our business and future operating results are subject to global economic and market conditions.

Market turbulence and weak economic conditions, including those caused by the on-going COVID-19 pandemic, as well as concerns about energy costs, geopolitical issues, inflation, the availability and cost of credit, business and consumer confidence, and unemployment could impact our business in particular, are evolvinga number of ways, including:

Potential deferment of purchases and include, but are not limitedorders by customers: Uncertainty about global economic conditions could cause consumers, businesses and governments to malicious software, attemptsdefer purchases in response to gain unauthorizedflat revenue budgets, tighter credit, decreased cash availability and weak consumer confidence. Accordingly, future demand for our products could differ materially from our current expectations.

Customers’ inability to obtain financing to make purchases and/or maintain their business: Some of our customers require substantial financing in order to finance their business operations, including capital expenditures on new equipment and equipment upgrades, and make purchases from us. The potential inability of these customers to access the capital needed to data,finance purchases of our products and other electronic security breachesmeet their payment obligations to us could adversely impact our business, operations, financial condition, and liquidity. While we monitor these situations carefully and attempt to take appropriate measures to protect ourselves, including factoring credit arrangements to financial institutions, it is possible that could leadwe may have to disruptions in systems, unauthorized release of confidentialdefer


revenue until cash is collected or otherwise protected information and corruption of data. Any such eventwrite-down or write-off uncollectible accounts. Such write-downs or write-offs, if large, could have a material adverse effect on our business, operating resultsoperations, financial condition, and financial condition.


Our daily business operations require us to retain sensitive data such as intellectual property, proprietary business information and data related to customers, suppliers and business partners within our networking infrastructure. The ongoing maintenance and security of this information is pertinent to the success of our business operations and our strategic goals.
Our networking infrastructure and related assets may be subject to unauthorized access by hackers, employee errors, or other unforeseen activities. Such issues could result in the disruption of business processes, network degradation and system downtime, along with the potential that a third party will exploit our critical assets such as intellectual property, proprietary business information and data related toliquidity. If our customers suppliersbecome insolvent due to market and business partners. To the extent that such disruptions occur, they may cause delays in the manufactureeconomic conditions or shipment of our products and the cancellation of customer orders and, as a result, our business operating results and financial condition could be materially and adversely affected resulting in a possible loss of business or brand reputation.
In addition, the effects of war or acts of terrorismotherwise, it could have a material adverse effect on our business, operating resultsoperations, financial condition and liquidity.

Negative impact from increased financial condition. The continued threatpressures on third-party dealers, distributors and retailers: We make sales in certain regions through third-party dealers, distributors and retailers. These third parties may be impacted, among other things, by a significant decrease in available credit. If credit pressures or other financial difficulties result in insolvency for these third parties and we are unable to successfully transition end customers to purchase our products from other third parties, or from us directly, it could adversely impact our business, operations, financial condition, and liquidity.

Negative impact from increased financial pressures on key suppliers: Our ability to meet customers’ demands depends, in part, on our ability to obtain timely and adequate delivery of terrorismquality materials, parts and heightened security and military actioncomponents from our suppliers. Certain of our components are available only from a single source or limited sources. If certain key suppliers were to become capacity constrained or insolvent, it could result in response to this threat,a reduction or any future acts of terrorism, may cause further disruption to the economy and create further uncertaintiesinterruption in supplies or a significant increase in the economy. Energyprice of supplies and adversely impact our financial condition and results of operations. In addition, credit constraints of key suppliers could result in accelerated payment of accounts payable by us, impacting our cash flow.

We may experience material adverse impacts on our business, operations, financial condition, and liquidity as a result of weak or recessionary economic or market conditions in the United States, South Korea, Germany, or the rest of the world.

Natural disasters, public health crises, political crises, and other catastrophic events or other events outside of our control may damage our facilities or the facilities of third parties on which we depend, and could materially impact our supply chain and the operations of our customers and suppliers.

Our global headquarters is located in Plano, Texas and our U.S. manufacturing facility is located in Seminole, Florida. These facilities are subject to disruption from natural causes beyond our control, including physical risks from tornados, severe storms, floods, other natural disaster or power shortages such as gas or electricity shortages,outages that could have similar negative impacts. To the extent that suchdisrupt operations or impair critical systems. Any of these disruptions or uncertainties result in delays or cancellations of customer orders or the manufacture or shipmentother events outside of our products,control could affect our business negatively, harming our operating results and financial condition could be materially and adversely affected.

Our business and operations are especially subject toresults. In addition, in the risks of earthquakes and other natural catastrophic events.
Our corporate headquarters, including a significant portion of our research and development operations, are located in Northern California, a region known for seismic activity. Additionally, someevent any of our facilities including our manufacturing facility in Florida, are located near geographic areas that have experienced hurricanes inor the past. For example, Hurricane Irma caused substantial damage and devastation in South Florida in September 2017, including in Seminole, the locationfacilities of our manufacturing facility. A significantsuppliers, contract manufacturers, third-party service providers, or customers, is affected by natural disaster,disasters, such as an earthquake, hurricane, fire, floodhurricanes, earthquakes, tsunamis, power shortages or outages, floods or monsoons, public health crises, such as pandemics and epidemics, including the ongoing COVID-19 pandemic to the extent not already occurring, political crises, such as terrorism, war, political instability or other catastrophic event, could severely affectconflict, or other events outside of our ability to conduct normalcontrol, our business operations, and as a result, our future operating results could be materially and adversely affected.
As long as DNI controls us, other holders ofsuffer. Disasters occurring at our common stock will have limited ability to influence matters requiring stockholder approval and DNI’s interest may conflict withor our interests and the interests of other stockholders.
As of December 31, 2016, DNI owned approximately 58%vendors’ facilities also could impact our reputation.

Any of the outstanding shares of our common stock. Accordingly, until such time as DNI and its affiliates hold shares representing less than a majority of the votes entitled to be cast by the holders of our outstanding common stock at a stockholder meeting, DNI generally will have the ability to control the outcome of any matter submitted for the vote of our stockholders, except in certain circumstances set forth in our certificate of incorporation or bylaws. In addition, pursuant to our bylaws, we are subject to certain requirements and limitations regarding the composition of our board of directors until September 2018. Thereafter, for so long as DNI and its affiliates hold shares of our common stock representing at least a majority of the votes entitled to be cast by the holders of our common stock at a stockholder meeting, DNI will be able to freely nominate and elect all the members of our board of directors, subject only to a requirement that a certain number of directors qualify as "independent directors" under Nasdaq listing rules and applicable laws. We have elected to be treated as a “controlled company” under Nasdaq Marketplace Rules because more than 50% of the voting power for the election of directors is held by DNI. As a “controlled company,” we may rely on exemptions from certain corporate governance requirements under Nasdaq Marketplace Rules, including the requirement that we have a majority of independent directors on the Board of Directors and requirements with respect to compensation and nominating and corporate governance committees. The directors elected by DNI will have the authority to make decisions affecting our capital structure, including the issuance of additional capital stock or options, the incurrence of additional indebtedness, the implementation of stock repurchase programs, and the declaration of dividends. The interests of DNI may not coincide with the interests of our other stockholders or with holders of our indebtedness. DNI’s ability, subject to the limitations in our certificate of incorporation and bylaws, to control all matters submitted to our stockholders for approval limits the ability of other stockholders to influence corporate matters and, as a result, we may take actions that our stockholders or holders of our indebtedness do not view as beneficial. In addition, the existence of a controlling stockholderforegoing events may have the effect of making it more difficult fordisrupting our supply chain, which could harm our business, financial condition results of operations. Illness, travel restrictions, absenteeism, or other workforce disruptions could negatively affect our supply chain, manufacturing, distribution, or other business processes. We may face additional production disruptions in the future, which may place constraints on our ability to produce products in a third party to acquire,timely manner or discouraging a third party from seeking to acquire, us. A third party would be required to negotiate any such transaction with DNI, and the interestsmay increase our costs.

Future issuances of DNI with respect to such transactionadditional equity securities could result in dilution of existing stockholders’ equity ownership.

We may be different from the interests of our other stockholders or with holders of our indebtedness. In addition, provisions of our certificate of incorporation, bylaws and Delaware law could make it more difficult for a third party to acquire us, even if doing so would be beneficial to certain stockholders.

Future sales of our common stock could lower our stock price and dilute existing shareholders.
We issued a total of approximately 9.5 million shares (post reverse stock split) of our common stock to DNI in connection with the Merger, and may issue additional shares of common stock to finance future acquisitions through the use of equity. DNI has

the right to require us to register with the SEC resales of the shares issued in connection with the Mergerdetermine from time to time. In the event that DNI exercises its registration rights with respecttime to such shares, such shares would become eligible for resale upon registration. Additionally, sharesissue additional equity securities to raise additional capital, to support growth, or, as we have in recent years, to make acquisitions. Further, we may issue stock options, grant restricted stock awards or other equity awards to retain, compensate and/or motivate our employees and directors. These issuances of our common stock are available for future sale pursuant to awards granted under our equity incentive plans. Our stock price may suffer a significant decline as a resultsecurities could dilute the voting and economic interests of any sudden increase in the number of shares sold in the public market or market perception that the increased number of shares available for sale will exceed the demand for our common stock.
existing stockholders.

There is a limited public market of our common stock.
There is a limited public market for our common stock. The average daily trading volume in our common stock during the 12 months ended December 31, 2016 was approximately 15,410 shares (post reverse stock split) per day. We cannot provide assurances that a more active trading market will develop or be sustained. As a result of low trading volume in our common stock, the purchase or sale of a relatively small number of shares of our common stock could result in significant price fluctuations and it may be difficult for holders to sell their shares without depressing the market price for our common stock.

ITEM 1B.

UNRESOLVED STAFF COMMENTS

None

ITEM 1B.    UNRESOLVED STAFF COMMENTS
None.
ITEM 2.    

ITEM 2.

PROPERTIES

We

In 2020, the Company moved its headquarter and established its Engineering Center of Excellence in Plano, Texas, U.S, where we lease our worldwide headquarters, which are located in Oakland, California.the office spaces. We also lease facilities for manufacturing research and development purposes at locations includingin Seminole, Florida, U.S., where we manufacture our low volume, high mix products. We also lease facilities for office and Alpharetta, Georgia,warehouse space in South Korea and in Korea, India, China and Vietnam. We maintain smaller offices to provide sales and customer support at various domestic and international locations. We manufacture many of our more complex products at our manufacturing facility in Florida. We believe that our existing facilities are suitable and adequate for our present purposes.

ITEM 3.    

ITEM 3.

We are

From time to time, the Company is subject to various legal proceedings, claims and litigation arising in the ordinary course of business. While the outcome of these matters is currently not determinable, we dothe Company records an accrual for legal contingencies that it has determined to be probable to the extent that the amount of the loss can be reasonably estimated. The Company does not expect that the ultimate costs to resolve these matters will have a material adverse effect on ourits consolidated


financial position, or results of operations.operations or cash flows. However, litigation is subject to inherent uncertainties, and unfavorable rulings could occur. If an unfavorable ruling were to occur, there exists the possibility of a material adverse impact on the results of operations and cash flows of the reporting period in which the ruling occurs, or future periods.

ITEM 4.    

ITEM 4.

MINE SAFETY DISCLOSURES

Not applicable.

INFORMATION ABOUT OUR EXECUTIVE OFFICERS

Set forth below is information concerning our executive officers as of December 31, 2021.

Name

Age

Office

Charles Daniel Vogt

58

Chief Executive Officer, President

Misty Kawecki

48

Chief Financial Officer

Justin Ferguson

44

Chief Legal Officer and Corporate Secretary

Charlie Vogt was appointed as the President and Chief Executive Officer of the DZS Inc., effective August 1, 2020. In addition, Mr. Vogt was elected as a member of the Board of Directors, also effective August 1, 2020.  In connection with Mr. Vogt’s appointment, Il Yung Kim ceased to serve as President and Chief Executive Officer of DZS Inc. and as a member of the Board effective July 31, 2020. Prior to joining the Company, Mr. Vogt was most recently President and Chief Executive Officer of ATX Networks, a leader in broadband access and media distribution, where he led the company through extensive transformation and growth since February 2018 and will remain a member of the board. From July 2013 to January 2018, Mr. Vogt served as President and Chief Executive Officer of Imagine Communications, where he directed the company through change as it evolved its core technology, including large-scale restructuring and rebranding and multiple technology acquisitions as he implemented a vision and growth strategy. Before joining Imagine Communications, Mr. Vogt was President and Chief Executive Officer of GENBAND (today known as Ribbon Communications), where he transformed the company from a startup to a global leader in voice over IP and real-time IP communications solutions. His professional career has also included leadership roles at Taqua (Tekelec), Lucent Technology (Nokia), Ascend Communications (Lucent), ADTRAN, Motorola and IBM.  

Misty Kawecki was appointed to the position of Chief Financial Officer on August 2, 2021. Ms. Kawecki recently served as Chief Financial Officer and Head of Operations at MediaKind, Inc., a large-scale media platform. Prior roles include Chief Accounting Officer at Imagine Communications, Inc., and executive roles at GENBAND (today known as Ribbon Communications) and McAfee (today is a subsidiary of Intel Corporation). She began her career at Ernst & Young LLP. She is a Certified Public Accountant and holds a Master’s Degree in accounting from Texas Tech University.

Justin K. Ferguson has served as Chief Legal Officer and Corporate Secretary since September 2020. Prior to joining DZS, from 2018 to 2020, Mr. Ferguson was the Executive Vice President, General Counsel and Corporate Secretary of Ribbon Communications Inc., a Nasdaq listed company that provides real time communications software and packet and optical transport solutions. Prior to joining Ribbon, from 2015 to 2018, Mr. Ferguson was the Vice President, General Counsel and Corporate Secretary of Zix Corporation, a Nasdaq listed company that provides email security solutions. From 2011 to 2015, Mr. Ferguson served as Senior Vice President—Director of Legal for GENBAND. Prior to GENBAND, he was an attorney at the law firms of Weil, Gotshal & Manges LLP and Baker Botts L.L.P. Mr. Ferguson received a Juris Doctorate degree from Texas Tech University School of Law and a Bachelor's degree in Business Administration from Texas Tech University. He is a member of the State Bar of Texas.


PART II


ITEM 5.    

ITEM 5.

MARKET FOR REGISTRANT’S COMMON EQUITY, RELATED STOCKHOLDER MATTERS AND ISSUER PURCHASES OF EQUITY SECURITIES

Price Range of Common Stock

Our common stock is listed on the Nasdaq Capital Market under the symbol “DZSI” (formerly "ZHNE" prior to the Merger). The following table sets forth, for the periods indicated, the high and low per share sales prices of our common stock as reported on Nasdaq. All per share prices reflect the one-for-five reverse stock split effected on February 28, 2017.

2016:   
 High Low
Fourth Quarter ended December 31, 2016$5.95
 $4.65
Third Quarter ended September 30, 20167.10
 5.25
Second Quarter ended June 30, 20168.25
 5.60
First Quarter ended March 31, 20168.10
 5.00
2015:   
 High Low
Fourth Quarter ended December 31, 2015$7.50
 $4.70
Third Quarter ended September 30, 201511.20
 6.80
Second Quarter ended June 30, 201514.75
 6.25
First Quarter ended March 31, 20158.75
 6.05

As of September 20, 2017, there were 596March 4, 2022, we had 376 registered stockholders of record. A substantially greater number of holders of DZS common stock are “street name” or beneficial holders, whose shares are held of record by banks, brokers and otheror financial institutions.

Dividend Policy

We have never paid or declared any cash dividends on our common stock or other securities and do not anticipate paying cash dividends in the foreseeable future. Any future determination to pay cash dividends will be at the discretion of the Board of Directors, subject to any applicable restrictions under our debt and credit agreements, and will be dependent upon our financial condition, results of operations, capital requirements, general business condition and such other factors as the Board of Directors may deem relevant.

ITEM 6.

[RESERVED]


Performance Graph
The following performance graph shall not be deemed to be incorporated by reference by means of any general statement incorporating by reference this Annual Report on Form 10-K into any filing under the Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, as amended, except to the extent that we specifically incorporate this information by reference, and shall not otherwise be deemed filed under those acts.
The graph compares the cumulative total return of our common stock from December 31, 2011 through December 31, 2016 with the performance of the S&P 500 Index and the NASDAQ Telecommunications Index over those periods.
The graph assumes that (i) $100 was invested in our common stock at the closing price of our common stock on December 31, 2011, (ii) $100 was invested in each of the S&P 500 Index and the NASDAQ Telecommunications Index at the closing price of the respective indices on that date and (iii) all dividends received were reinvested. To date, no cash dividends have been declared or paid on our common stock.

 12/31/11 12/31/12 12/31/13 12/31/14 12/31/15 12/31/16
DASAN Zhone Solutions, Inc.$100 $53 $601 $199 $113 $111
S&P 500 Index - Total Returns$100 $116 $154 $175 $177 $198
NASDAQ Telecommunications Index$100 $105 $134 $150 $142 $167







ITEM 6.    SELECTED FINANCIAL DATA
The following selected financial data has been derived from our consolidated financial statements and should be read in conjunction with the consolidated financial statements and notes thereto, and with “Management’s Discussion and Analysis of Financial Condition and Results of Operations.”
The Merger has been accounted for as a reverse acquisition under which DNS was considered the accounting acquirer of DZS. As such, the selected financial data below comprises the operating results of DNS and its consolidated subsidiaries for periods through September 8, 2016 and DZS. and its consolidated subsidiaries for periods on or after September 9, 2016, the effective date of the Merger.
 Year Ended December 31,
 2016 2015 2014 2013 2012
   (As restated) (As restated)    
 (in thousands, except per share data)
Statement of Comprehensive Income (Loss) Data:         
Net revenue$121,670
 $114,421
 $108,634
 $108,046
 $102,761
Net revenue - related parties28,634
 24,775
 30,760
 10,164
 5,610
Total net revenue150,304
 139,196
 139,394
 118,210
 108,371
Cost of revenue         
Products and services84,415
 81,420
 70,361
 66,821
 58,689
Products and services - related parties24,738
 21,890
 28,191
 10,436
 6,002
Amortization of intangible assets204
 
 
 
 
Gross profit40,947
 35,886
 40,842
 40,953
 43,680
Operating expenses:         
Research and product development25,396
 21,331
 22,805
 18,774
 18,019
Selling, marketing, general and administrative27,348
 17,528
 14,834
 14,040
 18,438
Amortization of intangible assets1,556
 4
 
 
 
Gain from sale of assets(304) 
 
 
 
Total operating expenses53,996
 38,863
 37,639
 32,814
 36,457
Operating income (loss)(13,049) (2,977) 3,203
 8,139
 7,223
Interest income183
 136
 418
 550
 1,314
Interest expense(830) (532) (526) (629) (523)
Other income (expense), net(145) 266
 122
 656
 (691)
Income (loss) before income taxes(13,841) (3,107) 3,217
 8,716
 7,323
Income tax provision1,487
 232
 1,380
 2,208
 2
Net income (loss)(15,328) (3,339) 1,837
 6,508
 7,321
Net loss attributable to non-controlling interest(2) 
 
 
 
Net income (loss) attributable to DASAN Zhone Solutions, Inc.$(15,326) $(3,339) $1,837
 $6,508
 $7,321
          
Foreign currency translation adjustments(1,047) (2,790) (1,997) 905
 2,570
Comprehensive income (loss)(16,375) (6,129) (160) 7,413
 9,891
Comprehensive income attributable to non-controlling interest1
 
 
 
 
Comprehensive income (loss) attributable to DASAN Zhone Solutions, Inc.$(16,376) $(6,129) $(160) $7,413
 $9,891
          
Basic and diluted net income (loss) per share attributable to DASAN Zhone Solutions, Inc. (1) (2)
$(1.32) $(0.36) $0.20
 $0.71
 $0.80
Weighted average shares outstanding used to compute basic and diluted net income (loss) per share (1)
11,637
 9,314
 9,199
 9,146
 9,126
          

(1) Amount presented has been adjusted to reflect the one-for-five reverse stock split effected on February 29, 2017.
(2) Basic net income (loss) per share is not different from the diluted net income (loss) per share because we have not issued the potential common stock for the years ended December 31, 2012 through 2015. Basic net loss per share is the same as diluted net loss per share for the year ended December 31, 2016 because the effects of stock options and restricted stock units would have been anti-dilutive.
 As of December 31,
 2016 2015 2014 2013 2012
   (As restated) (As restated)    
 (in thousands)
Balance Sheet Data:         
Cash, cash equivalents and short-term investments$18,886
 $9,095
 $7,150
 $24,719
 $11,581
Working capital56,819
 33,159
 40,033
 37,987
 28,082
Total assets145,447
 83,226
 103,279
 88,384
 62,135
Stockholders’ equity and non-controlling interest66,868
 41,465
 48,633
 47,124
 36,102

ITEM 7.    

ITEM 7.

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS


Restatement Of Previously Reported Consolidated Financial Statements
We have determined that the incorrect application of generally accepted accounting principles, resulted in material misstatements and a restatement of our consolidated financial statements for the year ended December 31, 2015. The restatement of our financial statements for the year ended December 31, 2015 resulted from improper recognition of revenue under our revenue recognition policy. Specifically, improper revenue recognition resulted from recognition of revenue when collectability was not reasonably assured and the related revenue should have been recognized when the cash was collected. As a result, our consolidated financial statements for the year ended December 31, 2015 contained in our proxy statement filed with the SEC on August 8, 2016 should no longer be relied upon. Refer to Note 1(d) of the Notes to Consolidated Financial Statements for additional information.
Overview

We are a global provider of networkleading-edge access, 5G transport, and enterprise communications platforms that enable the emerging hyper-connected, hyper-broadband world. Our solutions are deployed by over 750 active customers, including advanced Tier 1, national and regional service providers and enterprise customers in more than 100 countries worldwide.Our solutions and communications equipment for service provider and enterprise networks. We research, develop, test, sell, manufacture and support communications equipment in five major areas: broadband access, Ethernet switching, mobile backhaul, POLAN and SDN:

Our broadband access products offer a variety of solutions for carriers and service providers to connect residential and business customers, either using high-speed fiber or leveraging their existing deployed copper networks to offer broadband services to customer premises. Once our broadband access products are deployed, the service provider can offer voice, high-definition and ultra-high-definition video, high-speed internet access and business class services to their customers. Both DNS and Legacy Zhone were market leaders in the broadband access market prior to the Merger, and the combination of DNS and Legacy Zhone is expected to enhance our leadership position for both carrier and enterprise solutions in this market following the Merger.
Our Ethernet switching products provide a high-performance and manageable solution that bridges the gap from carrier access technologies to the core network. Our products support pure Ethernet switching as well as layer 3 IP and MPLS capabilities, and are currently being developed for interfacing with SDN. Legacy Zhone did not offer comparable Ethernet switching products prior to the Merger, and therefore the Ethernet switching market is expected to provide an opportunity for growth for the combined company following the Merger.
Our mobile backhaul products provide a robust, manageable and scalable solution for mobile operators that enable them to upgrade their mobile backhaul systems and migrate from 3G networks to LTE and beyond. Our mobile backhaul products may be collocated at the RAN BS and can aggregate multiple RAN BS in to a single backhaul for delivery of mobile traffic to the RAN network controller. We provide standard Ethernet/IP or MPLS interfaces and

interoperate with other vendors in these networks. Legacy Zhone did not offer comparable mobile backhaul products prior to the Merger, and therefore the mobile backhaul market is expected to provide an opportunity for growth for the combined company following the Merger.
Our FiberLANplatforms portfolio of POLAN products are designed for enterprise, campus, hospitality, and entertainment arena usage. Our FiberLAN portfolio includes our high-performance, high-bandwidth GPON OLTs connected to the industry’s most diverse ONT product line, which include units with integrated PoE to power a wide range of devices such as our full range of WIFI APs and scalable WIFI AP controller. Our FiberLAN portfolio relates primarily to Legacy Zhone products, while our WIFI access points and controllers consist primarily of DNS products. We expect the combination of Legacy Zhone and DNS products in this market to enhance the functionality of our product offeringsBroadband Connectivity, Connected Home & Business, Mobile & Optical Edge, and provide an opportunity for growth for the combined company following the Merger.
Network & Experience Software.

Our SDN and NFV tools and building blocks to allow service providers to migrate their networks’ full complement of legacy control plane and data plane devices to a centralized intelligent controller that can reconfigure the services of the hundreds of network elements in real time for more controlled and efficient provision of bandwidth and latency across the network. This move to SDN and NFV provides better service for end customers and a more efficient and cost-effective use of hardware resources for service providers. Our SDN and NFV tools reflect the combined experience and technologies of DNS and Legacy Zhone.

As discussed under "Liquidity and Capital Resources" below, the maturing of short-term debt obligations and our recurring losses from operations raise substantial doubt on whether we will be able to continue as a going concern.
As of December 31, 2016, the total outstanding principal amount of our debt obligations was $24.4 million, consisting of the following:
$17.6 million in short-term debt obligations;
$6.8 million in long-term debt obligations to related parties.
Our ability to continue as a “going concern” is dependent on many factors, including, among other things, our ability to comply with the covenants in our existing debt agreements, our ability to cure any defaults that occur under our debt agreements or to obtain waivers or forbearances with respect to any such defaults, and our ability to pay, retire, amend, replace or refinance our indebtedness as defaults occur or as interest and principal payments come due.
Going forward, our key financial objectives include the following:

Increasing revenue while continuing to carefully control costs;

Increasing revenue while continuing to carefully control costs;
Continued

Continuing investments in strategic research and product development activities that will provide the maximum potential return on investment; and

Minimizing consumption of our cash and cash equivalents.

2021 Highlights and Recent Developments

During 2021, the Company appointed several industry leaders to new roles within the DZS executive team. These appointments, among others, include Misty Kawecki as Chief Financial Officerand Jennifer Yohe as Chief Operations Officer. Each brings a deep history of experience in our markets.

In the first quarter of 2021, the Company made the strategic decision to transition DZS GmbH, formerly Keymile GmbH, a subsidiary of the Company located in Germany, to a sales and research and product development activitiescenter. On July 15, 2021, the Company came to an agreement with the works council and entered into a social plan that will providecovers statutory benefits and one-time severance obligations. The Company incurred related restructuring and other charges of approximately $11.9 million in 2021, consisting primarily of termination-related benefits and impairment of long-lived assets. DZS GmbH reduced headcount by approximately 100 employees. The restructuring was essentially completed in the maximum potential return on investment; and

Minimizing consumptionfourth quarter of our cash and cash equivalents.
Merger
2021.  

On September 9, 2016, weMarch 3, 2021, the Company acquired DNS throughsubstantially all of the mergerassets of RIFT, Inc., a network automation solutions company, including all the outstanding shares of RIFT.IO India Private Limited, a wholly owned subsidiary of Zhone Technologies,RIFT, Inc. (collectively “RIFT”). RIFT developed a carrier-grade RIFT.ware software platform that simplifies the deployment of any slice, service, or application on any cloud. The total purchase consideration was $0.5 million, including a $0.2 million holdback that was released in April of 2021 following the fulfillment of certain requirements in the purchase agreement.

On February 5, 2021, we acquired all the outstanding stock of Optelian Access Networks Corporation (“Optelian”), a leading optical networking solution provider based in Ottawa, Ontario, Canada, and its portfolio of optical transport solutions. This acquisition introduced the “O-Series” to the DZS portfolio of carrier grade optical networking products with 100 gigabits per second and above capability, expanding DZS product portfolios by providing environmentally hardened, high capacity, and flexible solutions at the network edge. The purchase price of $7.5 million included cash paid to the shareholders and option holders of Optelian, cash paid to retire Optelian's outstanding debt on the date of acquisition, and contingent payments to shareholders.

On January 26, 2021, we entered into DNS,an underwriting agreement to sell 4.6 million shares of Common Stock (including 0.6 million shares issued pursuant to the underwriters’ option to purchase additional shares) at a price of $14.00 per share in an underwritten public offering. The equity offering closed on January 29, 2021 and resulted in gross proceeds of approximately $64.4 million and net proceeds, after deducting underwriting discounts and commissions and offering expenses, of approximately $59.5 million. We used a portion of the net proceeds from the equity offering to pay off the entire outstanding balance of debt with DNS survivingrelated parties.

2021 Key Product Developments

Streamlined Product Portfolio. Our focus on product rationalization during 2021 produced a streamlined, simplified, and strategically aligned global product portfolio. Our research and development investment scale has been enhanced through product rationalization efforts and further accelerated by our pivot to a platform-based development approach for our Software and Systems solutions. These platforms give our research and development teams the capacity to increase product innovation with reuse of technology modules across multiple products, improving our ability to bring innovative and differentiated products to market quickly. In 2021 we completed the development of 29 new products across all our technology pillars.

Fiber-Fueled Broadband Connectivity Drives Innovation. We are heavily engaged in and benefiting from the unprecedented and accelerated upgrade cycle from legacy copper and first generation PON technologies to 10 gigabit broadband connectivity solutions. We are enabling the next wave of network deployments fueled by HD video collaboration, augmented and virtual


reality, interactive gaming, and the interactive and collaborative world now known as our wholly owned subsidiary. In connectionthe Metaverse. The DZS Velocity Broadband Connectivity portfolio accelerates and simplifies the network wide deployment of future-proof next generation, multi-gigabit services over fiber, which are punctuated by new product introductions that simplify the evolution from sub-gigabit PON to 10 Gbps PON, OLTs and next generation G.fast distribution point units (“DPUs”) that deliver multi-gigabit service over legacy copper in MDUs and offer a simplified path to disaggregated network architectures.

Software-Driven Connected Home & Business Experience. The unprecedented drive from service providers to deliver multi-gigabit services to subscribers creates a market opportunity for DZS to complement those advanced services with systems and software to extend those services from the network to connected subscribers’ devices. DZS has responded to this opportunity with the Merger, Zhone Technologies, Inc. changedintroduction of Intelligent 10Gbps capable Fiber Termination Points, Wi-Fi 6 Residential Gateways and Access Points, and DZS Xperience Software. We accelerated our software strategy and roadmap throughout 2021, building upon the DZS Cloud feature set and announcing a launch of DZS Xperience software that optimizes the management of Wi-Fi services (including Wi-Fi 6).  

Differentiated Converged Network Edge. The DZS Helix portfolio focuses on growing service provider opportunities to serve the unique needs of the Connected Home & Business. Featuring one of the industry’s largest collections of feature-rich fiber termination points as well as residential and enterprise gateways and Wi-Fi systems, the DZS portfolio includes support for multi-gigabit capable services, Wi-Fi 6 and managed access network support all the way to the premises edge and beyond. DZS Helix portfolio is also differentiated for its namesupport for new converged network service opportunities in Enterprises and MDUs.

Mobile & Optical Edge. The adoption of 5G and O-RAN technologies have dramatically increased the requirement for bandwidth at the edge of the mobile network and disrupted the way mobile operators are architecting mobile networks. During 2021, we extended our product offerings in the midhaul and backhaul areas of the network with the following:

Transformational new products for the edge of the mobile network with packet-based fronthaul, enablement of non-traditional cell sites and deployment of transport and management solutions for in-building 5G small cells.

Modular, compact and environmentally hardened 100G-400G Optical Edge products that enable the deployment of technologies traditionally associated with core optical transport to the very edge of the mobile and fixed access networks.

Trends and Uncertainties

In December 2019, a strain of coronavirus, now known to DASAN Zhone Solutions, Inc. Our common stock continuescause COVID-19, was reported to be tradedhave surfaced in Wuhan, China. Since that time, the widespread and sustained transmission of the virus has reached global pandemic status. In response to the pandemic, many national and international health agencies recommended, and many countries and state, provincial and local governments implemented various measures, including travel bans and restrictions, limitations on public and private gatherings, business closures or operating restrictions, social distancing, and shelter-in-place orders. The health effects of the pandemic and the above measures taken in response thereto have had an effect on the Nasdaq Capital Market,global economy in general and our ticker symbol was changed from "ZHNE"have materially impacted and will likely continue to "DZSI" effective September 12, 2016.

Atimpact the effective timeCompany’s financial condition, results of operations and cash flows. Given the ongoing and dynamic nature of the Merger, all issuedvirus and outstanding shares of capital stock of DNS held by its sole shareholder, DNI, were canceledvariants, and converted into the rightworldwide response related thereto, it is difficult to receive shares of our common stock in an amount equal to 58%predict the full impact of the issued and outstanding shares ofCOVID-19 pandemic on our common stock immediately followingbusiness. Due to the Merger. Accordingly, atuncertainty around the effective timefuture economic impact of the Merger, we issued 9,493,016 shares (post reverse stock split) of our common stock to DNI as considerationpandemic, the fair value measurements used in the Merger,Company’s impairment assessments could be negatively impacted and could result in future impairments of which 949,302 shares (post reverse stock split) are being held in escrow as security for claims for indemnifiable losses in accordance with the merger agreement relating to the Merger. As a result, immediately following the effective time of the Merger, DNI held 58% of the outstanding shares of our common stockgoodwill, intangibles and the holders of our common stock immediately prior to the Merger retained, in the aggregate, 42% of the outstanding shares of our common stock. See Note 2 to the consolidated financial statements set forth in Part II, Item 8 of this report for additional information regarding the Merger.
Items Affecting Comparability of our Financial Results

As discussed in Note 2 to the consolidated financial statements set forth in Part II, Item 8 of this report, the Merger has been accounted for as a reverse acquisition under which DNS was considered the accounting acquirer of Legacy Zhone. As such, our financial results forother long-lived assets. During the year ended December 31, 2016 presented in this Annual Report on Form 10-K reflect the operating results of DNS and its consolidated subsidiaries for the period commencing on the first day of the applicable period through September 8, 2016 and the operating results of both DNS and Legacy Zhone and their respective consolidated subsidiaries for the period September 9 through December 31, 2016. Such results are2021, our revenues increased by 16% compared to the financial results of DNS and its consolidated subsidiaries for the year ended December 31, 2015. Our balance sheet as2020, however the impact of December 31, 2016 includeda continued COVID-19 pandemic or sustained measures taken to limit or contain the fair value of the assetsoutbreak could continue to have a material and liabilities of Legacy Zhone as of the effective date of the Merger. Those assets include the fair value of acquired intangible assets and goodwill. Due to the foregoing,adverse effect on our financial results for the year ended December 31, 2016 are not comparable to our financial results for prior years. The fourth quarter ended December 31, 2016 was the first quarter in which our financial results reflected a full quarter of operating results for both DNS and Legacy Zhone and their respective consolidated subsidiaries.
Critical Accounting Policies and Estimates
Management’s discussion and analysis ofbusiness, financial condition, and results of operations, is based upon our consolidatedand cash flows.

Impact of Inflation and Changing Prices

The financial statements whichand related data presented herein have been prepared in accordance with generally accepted accounting principlesU.S. GAAP, which requires the measurement of financial position and operating results in the United States of America. The preparation of these consolidated financial statements requires management to make estimates and judgments that affect the reported amounts of assets, liabilities, revenue and expenses, and related disclosure of contingent assets and liabilities. The policies discussed below are considered by management to be critical because changes in such estimates can materially affect the amount of our reported net income or loss. For all of these policies, management cautions that actual results may differ materially from these estimates under different assumptions or conditions.

Revenue Recognition
We recognize revenue when the earnings process is complete. We recognize product revenue upon shipment of product under contractual terms which transfer title to customers upon shipment, under normal credit terms, net of estimated sales returns and allowances at the time of shipment. Revenue is deferred if there are significant post-delivery obligations or if the fees are not fixed or determinable. When significant post-delivery obligations exist, revenue is deferred until such obligations are fulfilled. Our arrangements generally do not have any significant post-delivery obligations. If our arrangements include customer acceptance provisions, revenue is recognized upon obtaining the signed acceptance certificate from the customer, unless we can objectively demonstrate that the delivered products or services meet all the acceptance criteria specified in the arrangement prior to obtaining the signed acceptance. In those instances where revenue is recognized prior to obtaining the signed acceptance certificate, we use successful completion of customer testing as the basis to objectively demonstrate that the delivered products or services meet all the acceptance criteria specified in the arrangement. We also consider historical acceptance experience with the customer, as well as the payment terms specified in the arrangement, when revenue is recognized prior to obtaining the signed acceptance certificate. When collectability is not reasonably assured, revenue is recognized when cash is collected.
We make certain sales to product distributors. These customers are given certain privileges to return a portion of inventory. Return privileges generally allow distributors to return inventory based on a percent of purchases made within a specific period of time. We recognize revenue on sales to distributors that have contractual return rights when the products have been sold by the distributors, unless there is sufficient customer specific sales and sales returns history to support revenue recognition upon shipment. In those instances when revenue is recognized upon shipment to distributors, we use historical rates of return from the distributors to provide for estimated product returns. We accrue for warranty costs, sales returns and other allowances at the time of shipment based on historical experience and expected future costs.
We derive revenue primarily from stand-alone sales of our products. In certain cases, our products are sold along with services, which include education, training, installation, and/or extended warranty services. As such, some of our sales have multiple deliverables. Our products and services qualify as separate units of accounting and are deemed to be non-contingent deliverables as our arrangements typically do not have any significant performance, cancellation, termination and refund type provisions. Products are typically considered delivered upon shipment. Revenue from services is recognized ratably over the period during which the services are to be performed.
For multiple deliverable revenue arrangements, we allocate revenue to products and services using the relative selling price method to recognize revenue when the revenue recognition criteria for each deliverable are met. The selling price of a deliverable is based on a hierarchy and if we are unable to establish vendor-specific objective evidence of selling price (VSOE) we look to third-party evidence of selling price (TPE) and if no such data is available, we use a best estimated selling price (BSP). In most instances, particularly as it relates to products, we are not able to establish VSOE for all deliverables in an arrangement with multiple elements. This may be due to infrequently selling each element separately, not pricing products

within a narrow range, or only having a limited sales history. When VSOE cannot be established, we attempt to establish the selling price of each element based on TPE. Generally, our marketing strategy differs from that of our peers and our offerings contain a significant level of customization and differentiation such that the comparable pricing of products with similar functionality cannot be obtained. Furthermore, we are unable to reliably determine what similar competitor products’ selling prices are on a stand-alone basis. Therefore, we are typically not able to determine TPE for our products.    
When we are unable to establish selling price using VSOE or TPE, we use BSP. The objective of BSP is to determine the price at which we would transact a sale if the product or service were sold on a stand-alone basis. The BSP of each deliverable is determined using average discounts from list price from historical sales transactions or cost plus margin approaches based on the factors, including but not limited to our gross margin objectives and pricing practices plus customer and market specific considerations.
We have established TPE for our training, education and installation services. These service arrangements are typically short term in nature and are largely completed shortly after delivery of the product. TPE is determined based on competitor prices for similar deliverables when sold separately. Training and education services are based on a daily rate per person and vary according to the type of class offered. Installation services are based on daily rate per person and vary according to the complexity of the products being installed.
Extended warranty services are priced based on the type of product and are sold in one to five year durations. Extended warranty services include the right to warranty coverage beyond the standard warranty period. In substantially all of the arrangements with multiple deliverables pertaining to arrangements with these services, we have used and intend to continue using VSOE to determine the selling price for the services. We determine VSOE based on our normal pricing practices for these specific services when sold separately.
Allowances for Sales Returns and Doubtful Accounts
We record an allowance for sales returns for estimated future product returns related to current period product revenue. The allowance for sales returns is recorded as a reduction of revenue and an allowance against our accounts receivable. We base our allowance for sales returns on periodic assessments of historical trends in product return rates and current approved returned products. If the actual future returns were to deviate from the historical data on which the reserve had been established, our future revenue could be adversely affected. We record an allowance for doubtful accounts for estimated losses resulting from the inability of customers to make payments for amounts owed to us. The allowance for doubtful accounts is recorded as a charge to general and administrative expenses. We base our allowance on periodic assessments of our customers’ liquidity and financial condition through analysis of information obtained from credit rating agencies, financial statement reviews and historical collection trends. Additional allowances may be required in the future if the liquidity or financial condition of our customers deteriorates, resulting in impairment in their ability to make payments.    
Inventories
Inventories are stated at the lower of cost or market, with cost being determined using the first-in, first-out (FIFO) method. In assessing the net realizable value of inventories, we are required to make judgments as to future demand requirements and compare these with the current or committed inventory levels. Once inventory has been written down to its estimated net realizable value, its carrying value cannot be increased due to subsequent changes in demand forecasts. To the extent that a severe decline in forecasted demand occurs, or we experience a higher incidence of inventory obsolescence due to rapidly changing technology and customer requirements, we may incur significant charges for excess inventory.
Goodwill and Other Acquisition-Related Intangible Assets
Goodwill and other acquisition-related intangible assets not subject to amortization are tested annually for impairment using a two-step approach, and are tested for impairment more frequently if events and circumstances indicate that the asset might be impaired. An impairment loss is recognized to the extent that the carrying amount exceeds the asset’s fair value. In the application of the impairment testing, we are required to make estimates of future operating trends and resulting cash flows and judgments on discount rates and other variables. Actual future results and other assumed variables could differ from these estimates.   Our future operating performance will be impacted by the future amortization of intangible assets, potential charges related to purchased in-process research and development for future acquisitions, and potential impairment charges related to goodwill. Accordingly, the allocation of the purchase price of the acquired companies to intangible assets and goodwill has a significant impact on our future operating results. The allocation process requires management to make significant estimates and assumptions, including estimates of future cash flows expected to be generated by the acquired assets and the appropriate discount rate for these cash flows. Should different conditions prevail, we would have to perform an impairment review that might result in material write-downs of intangible assets and/or goodwill. Other factors we consider important which could trigger an impairment review, include, but are not limited to, significantdollars without considering changes in the mannerrelative purchasing power of use ofmoney over time due to inflation. Although our acquired assets,

significant changes in the strategy for our overall business or significant negativeoperations are influenced by general economic trends. If this evaluation indicatesconditions, we do not believe that the value of an intangible asset may be impaired, an assessment of the recoverability of the net carrying value of the asset over its remaining useful life is made. If this assessment indicates that the cost of an intangible asset is not recoverable, basedinflation had a material effect on the estimated undiscounted future cash flows or other comparable market valuations of the entity or technology acquired over the remaining amortization, the net carrying value of the related intangible asset will be reduced to fair value and the remaining amortization period may be adjusted.  Due to uncertain market conditions and potential changes in our strategy and product portfolio, it is possible that forecasts used to support our intangible assets may change in the future, which could result in additional non-cash charges that would adversely affect our results of operations and financial condition.during our fiscal year ended December 31, 2021.


Business Combination
We allocate

FINANCIAL PERFORMANCE

Consolidated Results of Operations

The table below presents the fair valuehistorical consolidated statement of purchase consideration to the tangible assets acquired, liabilities assumed and intangible assets acquired based on their estimated fair values. The excess of the fair value of purchase consideration over the fair values of these identifiable assets and liabilities is recorded as goodwill. When determining the fair values of assets acquired and liabilities assumed, management makes significant estimates and assumptions, especiallycomprehensive income (loss) with respect to intangible assets and certain tangible assets such as inventory acquired as part of the Merger.

Critical estimates in valuing certain tangible and intangible assets include but are not limited to future expected cash flows from the underlying assets and discount rates. Management’s estimates of fair value are based upon assumptions believed to be reasonable, but which are inherently uncertain and unpredictable and, as a result, actual results may differ from estimates.
Income Tax
We estimate our income tax provision or benefit in each of the jurisdictions in which we operate, including estimating exposures related to examinations by taxing authorities. We also make judgments regarding the realization of deferred tax assets, and establish valuation allowances where we believe it is more likely than not that future taxable income in certain jurisdictions will be insufficient to realize these deferred tax assets. Our estimates regarding future taxable income and income tax provision or benefit may vary due toyear-over-year changes in market conditions, changes in tax laws, or other factors. If our assumptions, and consequently our estimates, change in the future, the valuation allowances we have established may be increased or decreased, impacting future income tax expense.(in thousands except percent change).

 

 

Years ended December 31,

 

 

 

 

 

 

 

2021

 

 

2020

 

 

% change

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Net revenue

 

$

350,206

 

 

$

300,640

 

 

 

16

%

Cost of revenue

 

 

229,938

 

 

 

203,761

 

 

 

13

%

Gross profit

 

 

120,268

 

 

 

96,879

 

 

 

24

%

Operating expenses:

 

 

 

 

 

 

 

 

 

 

 

 

Research and product development

 

 

47,052

 

 

 

37,957

 

 

 

24

%

Selling, marketing, general and administrative

 

 

90,241

 

 

 

63,543

 

 

 

42

%

Restructuring and other charges

 

 

12,310

 

 

 

-

 

 

 

100

%

Impairment of long-lived assets

 

 

1,735

 

 

 

6,472

 

 

 

-73

%

Amortization of intangible assets

 

 

1,182

 

 

 

1,432

 

 

 

-17

%

Total operating expenses

 

 

152,520

 

 

 

109,404

 

 

 

39

%

Operating loss

 

 

(32,252

)

 

 

(12,525

)

 

 

158

%

Interest income

 

 

107

 

 

 

77

 

 

 

39

%

Interest expense

 

 

(345

)

 

 

(2,035

)

 

 

-83

%

Loss on extinguishment of debt

 

 

 

 

 

(1,369

)

 

 

-100

%

Other income (expense), net

 

 

1,020

 

 

 

(3,729

)

 

 

-127

%

Loss before income taxes

 

 

(31,470

)

 

 

(19,581

)

 

 

61

%

Income tax provision

 

 

3,213

 

 

 

3,501

 

 

 

-8

%

Net loss

 

$

(34,683

)

 

$

(23,082

)

 

 

50

%


RESULTS OF OPERATIONS
We list in the

The table below presents the historical consolidated statement of comprehensive income (loss) as a percentage of total net revenue for the periods indicated.revenues.

 

 

Years ended December 31,

 

 

 

2021

 

 

2020

 

 

 

 

 

 

 

 

 

 

Net revenue

 

 

100

%

 

 

100

%

Cost of revenue

 

 

66

%

 

 

68

%

Gross profit

 

 

34

%

 

 

32

%

Operating expenses:

 

 

 

 

 

 

 

 

Research and product development

 

 

13

%

 

 

12

%

Selling, marketing, general and administrative

 

 

26

%

 

 

21

%

Restructuring and other charges

 

 

4

%

 

 

 

Impairment of long-lived assets

 

 

1

%

 

 

2

%

Amortization of intangible assets

 

 

 

 

 

1

%

Total operating expenses

 

 

44

%

 

 

36

%

Operating income (loss)

 

 

(10

)%

 

 

(4

)%

Interest income

 

 

 

 

 

 

Interest expense

 

 

 

 

 

(1

)%

Loss on extinguishment of debt

 

 

 

 

 

(1

)%

Other income (expense), net

 

 

1

%

 

 

(1

)%

Income (loss) before income taxes

 

 

(9

)%

 

 

(7

)%

Income tax provision (benefit)

 

 

1

%

 

 

1

%

Net income (loss)

 

 

(10

)%

 

 

(8

)%


 Year ended December 31,
 2016 2015 2014
   (As restated) (As restated)
Net revenue:     
Net revenue81 % 82 % 78 %
Net revenue - related parties19 % 18 % 22 %
Total net revenue100 % 100 % 100 %
Cost of revenue:     
Products and services56 % 58 % 50 %
Products and services - related parties16 % 16 % 20 %
Amortization of intangible assets %  %  %
Total cost of revenue73 % 74 % 71 %
Gross profit27 % 26 % 29 %
Operating expenses:     
Research and product development17 % 15 % 16 %
Selling, marketing, general and administrative18 % 13 % 11 %
Amortization of intangible assets1 %  %  %
Gain from sale of assets %  %  %
Total operating expenses36 % 28 % 27 %
Operating income (loss)(9)% (2)% 2 %
Interest income0 % 0 % 0 %
Interest expense(1)% 0 % 0 %
Other income (expense), net0 % 0 % 0 %
Income (loss) before income taxes(9)% (2)% 2 %
Income tax provision1 % 0 % 1 %
Net income (loss)(10)% (2)% 1 %
Net loss attributable to non-controlling interest0 % 0 % 0 %
Net income (loss) attributable to DASAN Zhone Solutions, Inc.(10)% (2)% 1 %
      
Foreign currency translation adjustments(1)% (2)% (1)%
Comprehensive loss(11)% (4)%  %
Comprehensive income attributable to non-controlling interest %  %  %
Comprehensive loss attributable to DASAN Zhone Solutions, Inc.(11)% (4)%  %
2016 COMPARED WITH 2015

Net Revenue

Prior to the Merger, DNS provided communications equipment primarily in the Asia-Pacific region, providing products and services to some of the largest carriers in the region with a particular focus on Korea, Japan and Vietnam. DNS typically generated approximately 85% of its net revenue from the Asia-Pacific region prior to the Merger. In contrast, Legacy Zhone typically generated less than 5% of its net revenue from the Asia-Pacific region prior to the Merger, with instead the majority of its net revenue derived from the Americas and the EMEA region. Given DNS’ pre-Merger market share in Korea and in the Asia-Pacific region, we expect that net revenue from Korea and elsewhere in the Asia-Pacific region will continue to be significant for the combined company

The following the Merger, with growth opportunities for the combined company to expand sales of legacy DNS products in the geographic regions where Legacy Zhone had a strong presence.


Information abouttable presents our net revenue for products and services for 2016 and 2015 is summarized belowrevenues by source (in millions):

 

 

Years ended December 31,

 

 

 

 

 

 

 

2021

 

 

2020

 

 

% change

 

Products

 

$

330.1

 

 

$

281.0

 

 

 

17.5

%

Services and other

 

 

20.1

 

 

 

19.6

 

 

 

2.6

%

Total

 

$

350.2

 

 

$

300.6

 

 

 

16.5

%

 2016 2015 Increase (Decrease) 
%
change
   (As restated)    
Products$142.2
 $133.0
 $9.2
 7%
Services8.1
 6.2
 1.9
 31%
 $150.3
 $139.2
 $11.1
 8%
Information about our net revenue for North America and international markets for 2016 and 2015 is summarized below (in millions):
 2016 2015 
Increase
(Decrease)
 
%
change
   (As restated)    
Revenue by geography:       
United States$16.9
 $4.4
 $12.5
 284 %
Canada2.0
 
 2.0
 N/A
Total North America18.9
 4.4
 14.5
 330 %
Latin America9.6
 2.5
 7.1
 284 %
Europe, Middle East, Africa13.6
 9.4
 4.2
 45 %
Korea77.9
 114.7
 (36.8) (32)%
Other Asia Pacific30.3
 8.2
 22.1
 270 %
Total International131.4
 134.8
 (3.4) (3)%
Total$150.3
 $139.2
 $11.1
 8 %
Net revenue

Our revenues increased 8%16.5% or $11.1$49.6 million to $150.3$350.2 million for 20162021 compared to $139.2$300.6 million for 2015.2020. The increase in netproduct revenue during the period was primarily attributable to increased sales of our mobile and optical edge and broadband connectivity products and partly as a result of recovering from the impacts of the COVID-19 pandemic in 2021. Service revenue represents revenue from maintenance and other services associated with product shipments. The increase in service revenue was primarily due to the consummation of the Merger in September 2016, which resulted in the inclusion of net revenue from the Legacy Zhone business in 2016 for the period from and after the consummation of the Merger. This increase was partially offset by a decrease inincreased product revenue resulting from the decreasesales. In 2021, we generated $504 million in sales to certain customers in Korea.

International net revenue decreased 3% or $3.4 million to $131.4 million for 2016orders as compared to $134.8$310 million for 2015,in orders in 2020 and represented 87%our backlog as of total net revenue compared with 97% in 2015. The decrease in international net revenueDecember 31, 2021 was primarily due to a decrease in sales to certain customers in Korea, which resulted in a decrease in net revenue from Korea of 32% or $36.8approximately $225 million as compared to $71 million as of December 31, 2020.

Information about our revenues by geography is summarized below (in millions):

 

 

Years ended December 31,

 

 

 

 

 

 

 

2021

 

 

2020

 

 

% change

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Americas

 

$

101.5

 

 

$

61.9

 

 

 

64.0

%

Europe, Middle East, Africa

 

 

70.0

 

 

 

64.6

 

 

 

8.4

%

Asia

 

 

178.7

 

 

 

174.1

 

 

 

2.6

%

Total

 

$

350.2

 

 

$

300.6

 

 

 

16.5

%

Our geographic diversification reflects the prior year period. This decrease was partially offset by the consummationcombination of the Merger in September 2016, which resulted in the inclusion of international netmarket demand, a strategic focus on capturing market share through new customer wins and new product introductions. As we have strategically expanded our revenue from the Legacy Zhone business in 2016 for the period from and after the consummation of the Merger, primarily relating to sales in Latin America, Europe and the Middle East. Net revenue from North America increased 330% or $14.5 million to $18.9 million in 2016 compared to $4.4 million in 2015. This increase was primarily due to the consummation of the Merger in September 2016, which resulted in the inclusion of net revenue related to the Legacy Zhone businessmix in North America over the past year, we continue to leverage our strength in 2016 for the period fromAsia market, particularly with Tier 1 customers in South Korea and afterJapan. We anticipate North America will continue to increase as a percentage of total revenue driven by the consummation of the Merger.

For the year ended December 31, 2016, three53 new customers represented 16%, 14% and 10% of net revenue, respectively. For the year ended December 31, 2015, four customers represented 26%, 21%, 17% (a related-party) and 10% of net revenue, respectively.captured during 2021.

Americas Region: For full year 2021, revenue from the Americas increased 64.0% to $101.5 million. Our strategic emphasis on the Americas region and focus on innovation and strategic alignment with service providers and fiber overbuilders has resulted in market share gains and new customers. Our new customer traction is benefitting from government-sponsored broadband incentive programs. For example, our recently announced broadband project in Mississippi with strategic partner Irby Utilities is a beneficiary of multiple broadband stimulus programs.

EMEA Region: For the full year 2021, revenue from the EMEA region increased 8.4% year-over-year to $70.0 million. Revenue from the EMEA region reflects typical fluctuations of customer deployment timeframes. For 2021, revenue from the EMEA region was largely driven by customers deploying GPON solutions in the Middle East. Throughout the year, sales activity in the region has expanded to record levels.

Asia Region: For the full year 2021, regional revenue increased 2.6% to $178.7 million. The Asia region experienced strong year-end spending from several marquee customers in world leading broadband markets of South Korea and Japan across both our Broadband Connectivity and Mobile Transport segments. The 2021 revenue increase was led by our Mobile and Optical Edge product line. We anticipate more diverse customer revenue within the Asia region in 2022 as customer programs from both existing and recent wins ramp into production.

We anticipate that our results of operations in any given period may depend to a large extent on sales to a small number of large accounts. As a result, our revenue for any quarter may be subject to significant volatility based upon changes in orders from one or a small number of key customers.

Cost of Revenue and Gross Profit

Total cost of revenue increased 6% or $6.0 million12.8% to $109.4$229.9 million for 2016,2021, compared to $103.3$203.8 million for 2015. The increase in cost of revenue was primarily due to the consummation of the Merger in September 2016, which resulted in the inclusion of cost of revenue related to the Legacy Zhone business in 2016 for the period from and after the consummation of the Merger. This increase was partially offset by lower cost of revenue resulting from decreased sales in Korea in 2016


compared to the prior year period.2020. Total cost of revenue was 73%65.7% of net revenue for 2016,2021, compared to 74%67.8% of net revenue for 2015,2020, which resulted in an increase in gross profit percentage to 34.3% for 2021 from 26%32.2% for 2020. The increase in 2015 to 27% in 2016. Gross margin slightly increased in 2016 compared to 2015,total cost of revenue was primarily due to the inclusion of Legacy Zhone'sincrease in


sales volume. The gross profit improvement was primarily due to our strategic investments and geographic diversification decisions directed towards the higher margin business following the consummation of the MergerNorth America region, despite increased supply chain costs.

Our 29 new product introductions throughout 2021 provided synergy and simplification to our next generation product portfolio, and also improved product margins. Price adjustments implemented in September 2016.

2021 are designed to offset increased semiconductor, component, logistics and expedite costs, which have generally been understood and accepted by our customers.

We expectanticipate that in the future our cost of revenue as a percentage of net revenuenew pricing strategy, combined with our aforementioned geographic mix diversification, new product introductions and DZS Cloud software expansion strategy, will vary depending on the mix and average selling prices of products sold, with longer term gross margin expansion expected to come from product cost reductions and manufacturing economies of scale resulting from the Merger. In addition, continued competitive and economic pressures could causeallow us to reduce our prices, adjust the carrying values of our inventory, or record inventorydeliver both revenue growth and margin expansion.

Operating expenses relating to discontinued products and excess or obsolete inventory.

Research and Product Development Expenses

Expenses: Research and development expenses include personnel costs, outside contractor and consulting services, depreciation on lab equipment, costs of prototypes and overhead allocations.

Research and product development expenses increased 19% or $4.1 millionby 24.0% to $25.4$47.0 million for 20162021 compared to $21.3$38.0 million for 2015.2020. The increase was primarily due to the consummation of the Merger in September 2016, which resulted in the inclusion of $5.1 million in research and product development expense relating to the Legacy Zhone business in 2016 for the period from and after the consummation of the Merger. This increase was partially offset by a decrease during the period prior to the Merger in research and product development expenses of $0.8 million resulting from lower personnel related expenseswas primarily due to a lower headcount. We intend to continue to investstrategic hiring decisions in research, development, and product developmentline management in the second half of 2020 and into the first half of 2021 with the intent to attain our strategic product development objectives while seeking to manage the associated costs through expense controls.

accelerate growth and capture market share.

Selling, Marketing, General and Administrative Expenses

Expenses: Selling, marketing, general and administrative expenses include personnel costs for sales, marketing, administration, finance, information technology, human resources and general management as well as legal and accounting expenses, rent, utilities, trade show expenses and related travel costs.

Selling, marketing, general and administrative expenses increased 56% or $9.8 million42.0% to $27.3$90.2 million for 20162021 compared to $17.5$63.5 million for 2015. The increase was primarily due to the consummation of the Merger in September 2016, which resulted in the inclusion of $10.7 million in selling, marketing, general and administrative expense relating to the Legacy Zhone business in 2016 for the period from and after the consummation of the Merger. This increase was partially offset by a decrease during the period prior to the Merger of sales expenses of $2.6 million due primarily to higher bad debt expenses in 2015 and reduced commission expenses in 2016. We expect selling, marketing, general and administrative expenses to increase in 2017, primarily driven by an increase in sales commission expense resulting from expected additional sales opportunities primarily related to the combined company's mobile backhaul and FiberLAN POLAN products.

Gain from Sale of Assets
We recorded a gain from sale of certain intellectual property of $0.3 million in December of 2016.
Interest Expense, net
Interest expense, net for 2016 and 2015 was $0.6 million and $0.4 million, respectively. This increase was primarily related to an increase in our outstanding debt balance from $21.8 million at December 31, 2015 to $24.4 million at December 31, 2016. Interest rates remained flat during 2016 and 2015.
Other Income (Expense), net
Other expense, net for 2016 was $0.1 million compared to other income, net for 2015 of $0.3 million. The expense recorded in 2016 was primarily related to an increase in guarantee expenses of $0.4 million offset by a gain of $0.3 million related to common area maintenance reimbursement.
Income Tax Provision
We recorded an income tax provision of $1.5 million and $0.2 million related to foreign and state taxes for the years ended December 31, 2016 and 2015, respectively. The increase in tax expense for the year ended December 31, 2016 was primarily due to an additional valuation allowance recorded on deferred tax assets in Korea. Due to our recurring operating losses and the significant uncertainty regarding the realization of our net deferred tax assets, we have recorded a full valuation allowance against our deferred tax assets.
2015 COMPARED WITH 2014
Net Revenue

Information about our net revenue for products and services for 2015 and 2014 is summarized below (in millions):
 2015 2014 
Increase
(Decrease)
 
%
change
 (As restated) (As restated)    
Products$133.0
 $132.3
 $0.7
 1 %
Services6.2
 7.1
 (0.9) (13)%
 $139.2
 $139.4
 $(0.2)  %
Information about our net revenue for North America and international markets for 2015 and 2014 is summarized below (in millions):
 2015 2014 
Increase
(Decrease)
 
%
change
 (As restated) (As restated)    
Revenue by geography:       
United States$4.4
 $12.5
 $(8.1) (65)%
Canada
 
 
  %
Total North America4.4
 12.5
 (8.1) (65)%
Latin America2.5
 1.3
 1.2
 92 %
Europe, Middle East, Africa9.4
 20.9
 (11.5) (55)%
Korea114.7
 99.6
 15.1
 15 %
Other Asia Pacific8.2
 5.1
 3.1
 61 %
Total International134.8
 126.9
 7.9
 6 %
Total$139.2
 $139.4
 $(0.2)  %
Net revenue remained flat at $139.2 million for 2015 compared to $139.4 million for 2014. Product revenue increased 1% or $0.7 million for 2015. The increase in product revenue was primarily due to increased sales in Korea, partially offset by decreased sales in Europe, Middle East and Africa. Service revenue decreased 13% or $0.9 million for 2015. Service revenue represents revenue from maintenance and other services associated with product shipments.
International net revenue increased 6% or $7.9 million to $134.8 million in 2015 and represented 97% of total net revenue compared with 91% in 2014. The increase in international net revenue was primarily due to increased sales in Korea as a result of recent growth in demand for our products in these regions, which was partially offset by lower revenue from Europe, Middle East and Africa. Net revenue from North America decreased 65% or $8.1 million to $4.4 million in 2015 compared to $12.5 million in 2014.
For the year ended December 31, 2015, three customers represented 26%, 21% and 10% of net revenue, respectively. For the year ended December 31, 2014, three customers represented 17%, 14% and 12% of net revenue, respectively.
Cost of Revenue and Gross Profit
Total cost of revenue increased 4.8% or $4.8 million to $103.3 million for 2015, compared to $98.6 million for 2014. The increase in cost of revenue for 2015 was primarily due to changes in product mix. Total cost of revenue was 74% of net revenue for 2015, compared to 71% of net revenue for 2014, which resulted in a decrease in gross profit percentage from 29% in 2014 to 26% in 2015.
Research and Product Development Expenses
Research and product development expenses decreased 6% or $1.5 million to $21.3 million for 2015 compared to $22.8 million for 2014. The decrease was primarily due to lower personnel-related expenses.

Selling, Marketing, General and Administrative Expenses
Selling, marketing, general and administrative expenses increased 18% or $2.7 million to $17.5 million for 2015 compared to $14.8 million for 2014.2020. The increase in selling, marketing, general and administrative expenses was primarily attributabledue to increasedthe increase in allowance for doubtful accounts for one customer in India of $14.2 million in the first quarter of 2021. Refer to Note 1, in the Notes to Consolidated Financial Statements, for further information on the bad debt expenseexpense. The increase was also partially due to strategic hiring decisions across sales and increased expensesadministration in the second half of 2020 and into the first half of 2021 with the intent to related parties for shared human resources, treasuryaccelerate growth and capture market share, along with the impact of the Optelian and Rift acquisitions.

Restructuring and Other Charges:Restructuring and other administrative services.

Interest Expense,charges for 2021 were $12.3 million and relate primarily to the strategic decision to transition DZS GmbH to a sales and research and development center. The restructuring and other charges consisting of termination-related benefits of $8.5 million, an impairment of long-lived assets charge of $2.7 million mainly related to right-of-use assets from operating leases, professional services of $0.9 million, and $0.2 million of other charges. See Note 6 Restructuring and Other Charges, in the Notes to Consolidated Financial Statements, for further information.

Impairment of Long-Lived Assets:During 2021, the Company recorded an impairment charge of $1.7 million for the right-of use assets from operating leases related to completion of the headquarters relocation to Plano, Texas. During 2020, the Company recorded an impairment charge of $6.5 million for DZS GmbH intangible assets as part of the Company’s evaluation for impairment, based on a triggering event for potential impairment.

Loss on Extinguishment of Debt: During March 2020, the Company paid the outstanding term loan borrowings in full and terminated the PNC Credit Facilities. In association with this debt repayment, the Company recorded a loss on extinguishment of debt of $1.4 million. There was no debt extinguishment related charge in 2021.

Other Income (Expense), net: Other income (expense) relates mainly to realized and unrealized foreign exchange gains and losses. Other income, net

Interest was $1.0 million for 2021 compared to other expense, net of $3.7 million in 2020. The main reason for the increase in other income, net was $0.4 million for 2015, compareddue to $0.1 million for 2014. Our outstanding debt balance decreased from $23.1 million at December 31, 2014 to $21.8 million at December 31, 2015 and interest rates remained low during 2015 and 2014.
foreign currency exchange gains in 2021.

Income Tax Provision

(Benefit):We recorded an income tax provisionexpense of $0.2$3.2 million for 2021 as compared to $3.5 million expense incurred in 2020. Despite consolidated net losses, we incur income tax expense due to taxable income generated in South Korea and $1.4 million related to foreign and state taxes for the years ended December 31, 2015 and 2014, respectively. Due toJapan.

Information about our recurring operating losses and the significant uncertainty regarding the realization of our net deferredeffective tax assets we have continued to record a full valuation allowance.rate is summarized below (in thousands except tax rate):

 

 

Years ended December 31,

 

 

 

2021

 

 

2020

 

Loss before income taxes

 

$

(31,470

)

 

$

(19,581

)

Total tax provision

 

 

3,213

 

 

 

3,501

 

Effective tax rate

 

 

-10.2

%

 

 

-17.9

%


OTHER PERFORMANCE

NON-GAAP FINANCIAL MEASURES

In managing our business and assessing our financial performance, we supplement the information provided by our U.S. GAAP results with adjusted earnings before stock-based compensation, interest, taxes, and depreciation, or Adjusted EBITDA, a non-GAAPnon-U.S. GAAP financial measure. We define Adjusted EBITDA as net income (loss) plus (i) interest expense, net, (ii) provision (benefit) for taxes, (iii) depreciation and amortization, (iv) stock-based compensation, and (v) the impact of material non-recurring transactions or events that we believe are not indicative of our core operating performance, such as Mergermerger and acquisition transaction costs, or ainventory valuation step-up amortization, purchase price adjustments, restructuring and other charges, goodwill impairment, bargain purchase gain, gain (loss) on sale of assets, or impairment of fixed assets.long-lived assets or loss on debt extinguishment, bad debt expense related to a large customer in India, any of which may or may not be recurring in nature. We believe that the presentation of Adjusted EBITDA enhances the usefulness of our financial information by presenting a measure that management uses internally to monitor and evaluate our operating performance and to evaluate the effectiveness of our business strategies. We believe Adjusted EBITDA also assists investors and analysts in comparing our performance across reporting periods on a consistent basis because it excludes the impact of items that we do not believe reflect our core operating performance.

performance.

Adjusted EBITDA has limitations as an analytical tool. Some of these limitations are:

Adjusted EBITDA does not reflect our cash expenditures, or future requirements for capital expenditures or contractual requirements;

Adjusted EBITDA does not reflect our cash expenditures, or future requirements for capital expenditures or contractual requirements;

Adjusted EBITDA does not reflect changes in, or cash requirements for, our working capital needs;

Adjusted EBITDA does not reflect changes in, or cash requirements for, our working capital needs;

Adjusted EBITDA does not reflect the interest expense, or the cash requirements necessary to service interest or principal payments, on our debts;

Adjusted EBITDA does not reflect the interest expense, or the cash requirements necessary to service interest or principal payments, on our debts;

Although depreciation and amortization are non-cash expenses, the assets being depreciated and amortized will often have to be replaced in the future, and Adjusted EBITDA does not reflect any cash requirements for such replacements;

Although depreciation and amortization are non-cash expenses, the assets being depreciated and amortized will often have to be replaced in the future, and Adjusted EBITDA does not reflect any cash requirements for such replacements;

Non-cash compensation is and will remain a key element of our overall long-term incentive compensation package, although we exclude it as an expense when evaluating our ongoing operating performance for a particular period; and

Non-cash compensation is and will remain a key element of our overall long-term incentive compensation package, although we exclude it as an expense when evaluating our ongoing operating performance for a particular period;

Other companies in our industry may calculate Adjusted EBITDA and similar measures differently than we do, limiting its usefulness as a comparative measure.

Other companies in our industry may calculate Adjusted EBITDA and similar measures differently than we do, limiting its usefulness as a comparative measure.

Because of these limitations, Adjusted EBITDA should not be considered in isolation or as a substitute for net income (loss) or any other performance measures calculated in accordance with U.S. GAAP or as a measure of liquidity. Management understands these limitations and compensates for these limitations by relying primarily on our U.S. GAAP results and using Adjusted EBITDA only supplementally.


as a supplemental measure.

Set forth below is a reconciliation of net income (loss) to Adjusted EBITDA, which we consider to be the most directly comparable GAAP financial measure to Adjusted EBITDA (in thousands):

 

 

Years ended December 31,

 

 

 

2021

 

 

2020

 

Net income (loss)

 

$

(34,683

)

 

$

(23,082

)

Add (deduct):

 

 

 

 

 

 

 

 

Interest expense, net

 

 

238

 

 

 

1,958

 

Income tax provision (benefit)

 

 

3,213

 

 

 

3,501

 

Depreciation and amortization

 

 

4,551

 

 

 

5,143

 

Stock-based compensation

 

 

8,990

 

 

 

4,613

 

Acquisition costs

 

 

675

 

 

 

 

Loss on debt extinguishment

 

 

 

 

 

1,369

 

Headquarters and facilities relocation

 

 

1,114

 

 

 

61

 

Executive transition

 

 

372

 

 

 

2,047

 

Intangibles Impairment

 

 

 

 

 

6,472

 

Bad debt expense, net of recoveries*

 

 

13,957

 

 

 

3,119

 

Restructuring and other charges

 

 

12,310

 

 

 

 

Adjusted EBITDA

 

$

10,737

 

 

$

5,201

 

 Year Ended December 31,
 2016 2015 2014
   (As restated)  
Net income (loss)$(15,328) $(3,339) $1,837
Add:     
Interest expense, net647
 396
 108
Income tax provision1,487
 232
 1,380
Depreciation and amortization3,173
 1,404
 1,936
Stock-based compensation336
 
 
Merger transaction costs1,273
 
 
Adjusted EBITDA$(8,412) $(1,307) $5,261

* Refer to Note 1, in the Notes to Consolidated Financial Statements, for further details on the bad debt expense.


LIQUIDITY AND CAPITAL RESOURCES

Our operations arehave historically and continue to be financed through a combination of our existing cash and cash equivalents, available credit facilities,cash generated in the business, borrowings, and sales of equity and debt instruments, based onequity.

The following table summarizes the information regarding our operating requirements and market conditions.

At December 31, 2016, cash and cash equivalents were $17.9and working capital (in thousands):

 

 

December 31, 2021

 

 

December 31, 2020

 

Unrestricted cash and cash equivalents

 

$

46,666

 

 

$

45,219

 

Working capital

 

 

124,498

 

 

 

123,285

 

The Company had a net loss of $34.7 million compared to $9.1 million atfor the year ended December 31, 2015. Our2021 and net loss of $23.1 million for the year ended December 31, 2020.

As of December 31, 2021, we had an accumulated deficit of $87.0 million and working capital of $124.5 million. As of December 31, 2021, we had $46.7 million in unrestricted cash and cash equivalents, as of December 31, 2016which included $9.8$30.1 million in cash balances held by our Korean subsidiary.international subsidiaries. On January 29, 2021, the Company closed an equity offering which resulted in net proceeds to the Company of approximately $59.5 million. The increase in cash and cash equivalentsCompany used a portion of $8.8 million was attributable tothe net cash provided by operating activities, financing activities and investing activities of $3.5 million, $2.8 million and $2.7 million, respectively.

Ability to Continue as a Going Concern
The accompanying consolidated financial statements have been prepared in conformity with GAAP, assuming we will continue as a going concern, which contemplates the realization of assets and satisfaction of liabilities in the normal course of business. Accordingly, the consolidated financial statements do not include any adjustments to reflect the possible future effects on the recoverability and classification of assets or the amounts and classification of liabilities that may resultproceeds from the possible inability of DZS to continue as a going concern.
We have incurred significant losses to date and our losses from operations may continue. We incurred net losses of $15.3 million and $3.3 million for the years ended December 31, 2016 and 2015, respectively. We had accumulated deficit of $19.9 million and working capital of $56.8 million as of December 31, 2016. As of December 31, 2016, we had approximately $17.9 million in cash and cash equivalents, which included $9.8 million in cash balances held by our Korean subsidiary, and $24.4 million in aggregate principal amount of outstanding borrowings under our short-term debt obligations and our loans from DNI. In addition, we had $4.2 million in aggregate borrowing availability under our revolving credit facilities as of December 31, 2016. We had $14.6 million committed as security for letters of credit under these facilities as of December 31, 2016. Due to the amount of short-term debt obligations maturing within the next 12 months and our recurring operating losses, our cash resources may not be sufficient to settle these short-term debt obligations. Our ability to continue as a "going concern" is dependent on many factors, including, among other things, our ability to comply with the covenants in our existing debt agreements, our ability to cure any defaults that occur under our debt agreements or to obtain waivers or forbearances with respect to any such defaults, and our abilityEquity Offering to pay retire, amend, replace or refinance our indebtedness as defaults occur or as interestoff the entire remaining outstanding balance of debt with related parties, banks, and principal payments come due. Although the process of amending, replacing or refinancing our short-term debt obligations is ongoing and we are in active discussions with multiple parties, there is no guarantee that they will result in transactions that are sufficientother lending institutions.

We continue to provide us with the required liquidity to remove the substantial doubt as to our ability to continue as a going concern. If we are unable to amend, replace, refinance our short-term debt obligations or raise the capital needed to meet liquidity needs and finance capital expenditures and working capital, we may experience material adverse impacts on our business, operating results and financial condition.

We have continued our focus on cost control andmanagement, operating efficiency along withand restrictions on discretionary spending, however in order to meet our liquidity needs and finance our capital expenditures and working capital needs for our business,spending. In addition, if necessary, we may be required to sell assets, issue debt or equity securities or purchase credit insurance or borrow on potentially unfavorable terms. In addition,insurance. We may also rationalize the number of products we may be required to reduce the scope ofsell, adjust our planned product development, reduce sales and marketing

effortsmanufacturing footprint, and reduce our operations in low margin regions, including reductions in headcount. Based on our current plans and current business conditions, we believe that our focused operating expense disciplinethese measures along with our existing cash and cash equivalents and available credit facilities will be sufficient to satisfy our anticipated cash requirements for at least the next 12 months howeverfrom the factors discussed above raise substantial doubt aboutdate of this Annual Report on Form 10-K.

Our ability to meet our obligations as they become due in the ordinary course of business for the next 12 months will depend on our ability (i) to achieve forecasted results of operations, and (ii) continue asto effectively manage working capital requirements. While we believe that we are likely to achieve forecasted results of operations if we are successful in implementing our business strategies, the impact of the COVID-19 pandemic provides great uncertainty with respect to a going concern.potential impact on our future operations.

The following table presents a summary of our cash flow activity for the periods set forth below (in thousands):

 

 

Years ended December 31,

 

 

 

2021

 

 

2020

 

Consolidated Statements of Cash Flows Data

 

 

 

 

 

 

 

 

      Net cash provided by (used in) operating activities

 

$

(14,326

)

 

$

5,064

 

      Net cash used in investing activities

 

 

(9,483

)

 

 

(2,270

)

      Net cash provided by financing activities

 

 

23,778

 

 

 

17,624

 

      Effect of exchange rate changes on cash, cash equivalents and restricted cash

 

 

(917

)

 

 

534

 

Net change in cash, cash equivalents and restricted cash

 

 

(948

)

 

 

20,952

 

Cash, cash equivalents and restricted cash at beginning of period

 

 

54,587

 

 

 

33,635

 

Cash, cash equivalents and restricted cash at end of period

 

$

53,639

 

 

$

54,587

 

Operating Activities

For fiscal year 2016,

Net cash used in operating activities during 2021 was $14.3 million compared with $5.1 million net cash provided by operating activities consisted of a net loss of $15.3 million, adjusted for non-cash expenses totaling $4.7 million and a net decrease in operating assets totaling $14.1 million. The most significant components of the changes in net operating assets were an increase in accounts receivable of $2.1 million, an increase in accounts payable of $4.5 million and an increase in accrued and other liabilities of $9.8 million.during 2020. The increase in accounts receivable was related to the timing of cash collections. The increaseused in accounts payable and accrued and other liabilitiesoperating activities was primarily due to timing of payments.

For fiscal year 2015, net cash provided by operatingrestructuring activities consisted of a net loss of $3.3 million, adjusted for non-cash expenses totaling less than $0.1 million and a netrelated to our Hanover location, an increase in operating assets totaling $7.6 million. The most significant components of the changes in net operating assets were a decrease in accounts receivable of $11.4 millionresearch and development expenses, along with an decrease in inventory of $6.0 million, partially offset by a decrease in accounts payables of $6.7 million. The increase in accounts receivable was related to the timing of cash collections. The decrease in inventory was primarily due to better utilization of inventory in 2015. The decrease in accounts payable was primarily due to timing of payments.
Investing Activities
For fiscal year 2016, net cash provided by investing activities consisted of cash acquired through the consummation of the Merger of $7.0 million,selling, general and administrative expenses, partially offset by an increase in restrictedgross margin.

Investing Activities

Net cash used in investing activities during 2021 was $9.5 million compared with $2.3 million of $2.1 millionnet cash used in investing activities during 2020. The increase in cash used in investing activities was primarily due to cash used for the Optelian and the acquisition of property and equipment of $1.3 million.RIFT acquisitions.


For fiscal year 2015, net

Financing Activities

Net cash provided by investingfinancing activities consisted of net proceeds from disposal of property and equipment and other assets of $2.2during 2021 was $23.8 million partially offset by purchases of short-term investments of $1.9 million.

Financing Activities
For fiscal year 2016,compared with $17.6 million net cash provided by financing activities during 2020. Net cash provided by financing activities during 2021 consisted primarily of proceeds from short-term borrowingsthe equity offering of $25.1$59.5 million and proceeds from long-term borrowingsexercise of $5.0stock options and employee stock purchases of $6.8 million partially offset by repayments of our short-term borrowings and related party term loans of $27.3$42.5 million.
For fiscal year 2015, net Net cash used inprovided by financing activities during 2020 consisted repaymentsprimarily of proceeds from borrowings of $32.1 million, proceeds from factored accounts receivable of $11.6 million and proceeds from exercise of stock options and employee stock purchases of $3.7 million, partially offset by a net outflow associated with the repayment of short-term borrowings and long-term debt of $17.8$29.8 million.

Debt Facilities

On February 9, 2022, the Company entered into Credit Agreement with JPMorgan Chase Bank, N.A., that provides for $30.0 million and decrease in other capital of $3.0 million, offset by proceeds from short-term borrowings of $18.0 million and proceeds of issuance of common stock of $1.8 million.

Cash Management
Our primary source of liquidity comes from our cash and cash equivalents, which totaled $17.9 million at December 31, 2016, as well as ourrevolving credit facilities, under which we had aggregate borrowing availability of $4.2 million as of December 31, 2016, and under which $14.6 million was committed as security for letters of credit as of December 31, 2016. Our cash and cash equivalents as of December 31, 2016 included $9.8 million in cash balances held by our Korean subsidiary.
Wells Fargo Bank Facility
As of December 31, 2016, we had a $25.0 million revolving line of credit and letter of credit facility with Wells Fargo Bank (WFB). Under the WFB Facility, we have the option of borrowing funds at agreed upon interest rates. The amount that we are ablecommitment. Refer to borrow under the WFB Facility varies based on eligible accounts receivable and inventory, as definedNote 8 Debt, in the WFB Facility, as long as the aggregate amount outstanding does not exceed $25.0 million less the amount committed as securityNotes to Consolidated Financial Statements, for letters of credit. To maintain availability of funds under the WFB Facility, we pay a commitment fee on the unused portion. The commitment fee is 0.25% per annummore detail about our current and is recorded as interest expense.
As of December 31, 2016, we had no outstanding borrowings under our WFB Facility, and $3.5 million was committed as security for letters of credit. We had $3.1 million of borrowing availability under the WFB Facility as of December 31, 2016. The amounts borrowed under the WFB Facility bear interest, payable monthly, at a floating rate equal to the three-month LIBOR plus a margin based on our average excess availability (as calculated under the WFB Facility). The interest rate on the WFB Facility was 3.50% at December 31, 2016. The maturity date under the WFB Facility is March 31, 2019.

Our obligations under the WFB Facility are secured by substantially all of our personal property assets and those of our subsidiaries that guarantee the WFB Facility, including our intellectual property. The WFB Facility contains certain financial covenants, and customary affirmative covenants and negative covenants. If we default under the WFB Facility due to a covenant breach or otherwise, WFB may be entitled to, among other things, require the immediate repayment of all outstanding amounts and sell our assets to satisfy the obligations under the WFB Facility. In the past we have violated the covenants in our former revolving line of credit and letter of credit facility and received waivers for these violations. On July 3, 2017, we executed an agreement with WFB to extend the due date for delivery for our audited financial statements for the year ended December 31, 2016 to September 27, 2017. As of December 31, 2016, we were in compliance with the covenants under the WFB Facility. We make no assurances that we will be in compliance with these covenants in the future.
Bank and Trade Facilities - Foreign Operations
Certain of our foreign subsidiaries have entered into various financing arrangements with foreign banks and other lending institutions consisting primarily of revolving lines of credit, trade facilities, term loans and export development loans. These facilities are renewed on an annual basis and are generally secured by a security interest in certain assets of the applicable foreign subsidiaries. Payments under such facilities are made in accordance with the given lender’s amortization schedules. As of December 31, 2016 and December 31, 2015, we had an aggregate outstanding balance of $17.6 million and $21.8 million, respectively, under such financing arrangements, and the interest rate per annum applicable to outstanding borrowings under these financing arrangements as of December 31, 2016 and December 31, 2015 ranged from 1.92% to 4.08% and 2.04% to 3.55%, respectively.
Related-Party Debt
In connection with the Merger, on September 9, 2016, we entered into a loan agreement with DNI for a $5.0 million unsecured subordinated term loan facility. Under the loan agreement, we were permitted to request drawdowns of one or more term loans in an aggregate principal amount not to exceed $5.0 million. As of December 31, 2016, $5.0 million in term loans was outstanding under the facility. Such term loans mature in September 2021 and are pre-payable at any time by us without premium or penalty. The interest rate as of December 31, 2016 under this facility was 4.6% per annum.
In addition, we borrowed $1.8 million from DNI for capital investment in February 2016, which amount was outstanding as of December 31, 2016. This loan matured in March 2017 with an option of renewal by mutual agreement, and bore interest at a rate of 6.9% per annum, payable annually. Effective February 27, 2017, we amended the terms of this loan to extend the repayment date from March 2017 to March 2018 and to reduce the interest rate from 6.9% to 4.6% per annum.
On June 23, 2017, we borrowed $3.5 million from Solueta, an affiliate of DNI, which amount was outstanding as of June 30, 2017. This loan matures in November 2017 and bears interest at a rate of 4.6% per annum, payable monthly.
debt obligations.  

Future Requirements and Funding Sources

Our fixed commitments for cash expenditures consist primarily of payments under operating leases, inventory purchase commitments, and payments of principal and interest for debt obligations.

From time to time, we may provide or commit to extend credit or credit support to our customers. This financing may include extending the terms for product payments to customers. Any extension of financing to our customers will limit the capital that we have available for other uses.

Our accounts receivable, while not considered a primary source of liquidity, represent a concentration of credit risk because a significant portion of the accounts receivable balance at any point in time typically consists of a relatively small number of customer account balances. As of December 31, 2016,2021, two customers accounted for 12% (a related-party)26% and 10%, respectively, of our net accounts receivable, respectively,receivable. As of December 31, 2021, the Company has an allowance for doubtful account of $16.7 million related to one customer. Refer to Refer to Note 1 Organization and Summary of Significant Accounting Policies, in the Notes to Consolidated Financial Statements, for further detail. Our receivables from customers in countries other than the United StatesU.S. represented 87%79% of net accounts receivable. We do not currently have any material commitments for capital expenditures, or any other material commitments aside from operating leases for our facilities, inventory purchase commitments and debt.

As discussed above in "Ability to Continue as a Going Concern", there is substantial doubt about our ability to continue as a going concern. The accompanying consolidated financial statements do not include any adjustments that might be necessary if we are unable to continue as a going concern.

Contractual Commitments and Off-Balance Sheet Arrangements

At

As of December 31, 2016,2021, our future contractual commitments by fiscal year were as follows (in thousands):


 Total Payments due by period
2017 2018 2019 2020 2121 Thereafter
Operating leases$21,420
 $3,633
 $2,916
 $2,335
 $2,192
 $2,178
 $8,166
Purchase commitments10,327
 6,441
 1,398
 1,382
 1,106
 
 
Short-term debt17,599
 17,599
 
 
 
 
 
Related-party debt6,800
 
 1,800
 
 
 
 5,000
Total future contractual commitments$56,146
 $27,673
 $6,114
 $3,717
 $3,298
 $2,178
 $13,166
Operating Leases
The$31.7 million and included operating lease amounts shown above represent primarily off-balance sheet arrangements. Forobligations and purchase commitments. Future minimum operating lease commitments, a liability is generally not recorded onobligations were $18.4 million and included operating lease payments for our balance sheet unlessoffice locations and manufacturing, research and development locations, which expire at various dates through 2028. Refer to Note 13 Leases, in the facility represents an excess facilityNotes to Consolidated Financial Statements, for which an estimate of the facility exit costs has been recorded on our balance sheet, net of estimated sublease income. For operating leases that include contractual commitments for operating expenses and maintenance, estimates of such amounts are included based on current rates. Payments made under operating leases will be treated as rent expense for the facilities currently being utilized.
Purchase Commitments
Themore details. Our long-term purchase commitments shown above representwere $3.2 million and included non-cancellable inventory purchase commitments. Refer to Note 14 Commitments and Contingencies, in the Notes to Consolidated Financial Statements, for more details.

The Company’s pension plan obligations are excluded from the contractual commitments assince the plan is unfunded, and the timing and amount of December 31, 2016.

On July 16, 2017,any cash payments are uncertain. Refer to Note 15 Employee Benefit Plans, in the Notes to Consolidated Financial Statements, for more details.

Critical Accounting Estimates

The methods, assumptions, and estimates that we reacheduse in applying our accounting policies may require us to apply judgments regarding matters that are inherently uncertain. We consider an agreement withaccounting policy to be a supplier to cancelcritical estimate if: (1) we must make assumptions that were uncertain when the judgment was made, and (2) changes in the estimate assumptions, or selection of a purchase arrangement for certain inventory which was committed to through 2020. Under the settlement, we are no longer required to fulfill our commitment to purchase $4.3 million in inventory. In connection with the settlement, we also entered intodifferent estimate methodology, could have a technical support services arrangement with the supplier through April 30, 2021.

Short-term Debt
The short-term debt obligations have been recorded as liabilitiessignificant impact on our balance sheet,financial position and comprise of $17.6 millionthe results that we report in outstanding borrowings under the credit facilities of our foreign subsidiaries. The short-term debt obligation amount shown above represents scheduled principal repayments, but not the associated interest payments which may varyConsolidated Financial Statements. While we believe that our estimates, assumptions, and judgments are reasonable, they are based on changesinformation available when the estimate was made.


Refer to Note 1 Accounting Policies, in market interest rates. At December 31, 2016, the interest rate per annum applicableNotes to outstanding borrowings under the trade facilities of our foreign subsidiaries ranged from 1.92% to 4.08%. See above under “Cash Management”Consolidated Financial Statements, for further information about these facilities.

Related-Party Debt
Ason our critical accounting estimates and policies, which are as follows:

Revenue Recognitionthe calculation of December 31, 2016,transaction price, net of variable consideration. Our sales arrangements to certain distributors provide our distributors with volume discounts, price adjustments, and other allowances under certain circumstances. For contracts with customers that contain multiple performance obligations, we had borrowed an aggregateaccount for the promises separately as individual performance obligations if they are distinct.

Inventories – the capitalization of $6.8 million from DNI. The amounts listedmanufacturing costs in inventory, excluding factory excess capacity costs. Inventory reflected at the table above reflectlower of cost or net realizable value considering future demand and market conditions.

Goodwill and Long-lived Assets the amendmentvaluation methods and assumptions used in February 2017assessing the impairment of property, plant and equipment, identified intangibles, and goodwill, including the determination of asset groupings and the identification and allocation of goodwill to reporting units.

Business Combinationthe valuation methods and assumptions used in assessing the fair value of assets and liabilities on the acquisition date.

Income Tax– the determination of deferred tax assets and liabilities based on differences between the financial reporting and the income tax bases of assets and liabilities. Valuation allowances are established, when necessary, to reduce deferred tax assets to the DNS capital investment loan, which among other matters extendedamount expected to be realized.

Allowances for Doubtful Accounts the repayment datedetermination of expected credit losses through analysis of information obtained from credit rating agencies, financial statement review, and historical and current collection trends.

Pension Benefit Obligationthe loan from March 2017. The table does not includevaluation methods and assumptions used to measure the $3.5 million borrowed from Solueta, an affiliate of DNI, in June 2017. See above under “Cash Management” for further information about our related party debt.

pension benefit obligation.  



ITEM 7A.    QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

Item 7A.

QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISKS

Cash and Cash Equivalents
We consider all cash and highly liquid investments purchased with an original maturity of less than three months to be cash equivalents.
Concentration of Credit Risk
Financial instruments which potentially subject us to concentrations of credit risk consist primarily of cash and cash equivalents, and accounts receivable. Cash and cash equivalents consist principally of financial deposits and money market accounts. Cash and cash equivalents are principally held with various domestic financial institutions with high credit standing. We perform ongoing credit evaluations of our customers and generally do not require collateral. Allowances are maintained for potential doubtful accounts.

Not required.


We anticipate that our results of operations in any given period may depend to a large extent on sales to a small number of large accounts. As a result, our revenue for any quarter may be subject to significant volatility based upon changes in orders from one or a small number of key customers.
For the year ended December 31, 2016, two customers represented 16% and 10% of net revenue, respectively. For the year ended December 31, 2015, three customers represented 26%, 21% and 10% of net revenue, respectively. As of December 31, 2016, two customers accounted for 12% (a related-party) and 10% of net accounts receivable, respectively. As of December 31, 2015, two customers accounted for 22% and 45% (a related-party) of net accounts receivable, respectively. As of December 31, 2016 and 2015, receivables from customers in countries other than the United States represented 87% and 93%, respectively, of net accounts receivable.
Interest Rate Risk
Our exposure to market risk for changes in interest rates relates primarily to our outstanding short-term debt. As of December 31, 2016, our outstanding short-term debt balance was $17.6 million. Amounts borrowed under the short-term debt bear interest ranging from 1.92% to 4.08% as of December 31, 2016. Assuming the outstanding balance on our variable rate debt remains constant over a year, a 2% increase in the interest rate would decrease pre-tax income and cash flow by approximately $0.4 million.
Foreign Currency Risk
We transact business in various foreign countries, and a significant portion of our assets is located in Korea. We have sales operations throughout Asia, Europe, the Middle East and Latin America. We are exposed to foreign currency exchange rate risk associated with foreign currency denominated assets and liabilities, primarily intercompany receivables and payables. Accordingly, our operating results are exposed to changes in exchange rates between the U.S. dollar and those currencies. During fiscal years 2016 and 2015, we did not hedge any of our foreign currency exposure.
We have performed a sensitivity analysis as of December 31, 2016 using a modeling technique that measures the impact on the balance sheet arising from a hypothetical 10% adverse movement in the levels of foreign currency exchange rates relative to the U.S. dollar, with all other variables held constant. The sensitivity analysis indicated that a hypothetical 10% adverse movement in foreign currency exchange rates would result in a foreign exchange loss of $1.7 million at December 31, 2016. This sensitivity analysis assumes a parallel adverse shift in foreign currency exchange rates, which do not always move in the same direction. Actual results may differ materially.


ITEM 8.    

ITEM 8.

FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

DASAN ZHONE SOLUTIONS,

DZS INC. AND SUBSIDIARIES

INDEX TO CONSOLIDATED FINANCIAL STATEMENTS

No financial statement schedules are required because all the relevant data is included elsewhere in this Annual Report on Form 10-K.

these consolidated financial statements.


Report of Independent Registered Public Accounting Firm

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Stockholders and the Board of Directors and Stockholders of DASAN Zhone Solutions,DZS Inc.


In our opinion,

Opinion on the Financial Statements

We have audited the accompanying consolidated balance sheetssheet of DZS Inc. and subsidiaries (the Company) as of December 31, 2021, the related consolidated statements of comprehensive income (loss), of stockholders’ equity and non-controlling interestcash flows for the year then ended, and of cash flowsthe related notes (collectively referred to as the “consolidated financial statements”). In our opinion, the consolidated financial statements present fairly, in all material respects, the financial position of DASAN Zhone Solutions, Inc. and its subsidiaries as ofthe Company at December 31, 20162021, and the results of theirits operations and theirits cash flows for the year then ended December 31, 2016 in conformity with accounting principlesU.S. generally accepted in the United States of America. These financial statements are the responsibility of the Company’s management. Our responsibility is to express an opinion on these financial statements based on our audit. accounting principles.

We conducted our audit of these financial statementsalso have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States). (PCAOB), the Company’s internal control over financial reporting as of December 31, 2021, based on criteria established in Internal Control-Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (2013 framework), and our report dated March 9, 2022 expressed an unqualified opinion thereon.

Basis for Opinion

These financial statements are the responsibility of the Company's management. Our responsibility is to express an opinion on the Company’s financial statements based on our audit. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audit in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. Anmisstatement, whether due to error or fraud. Our audit includesincluded performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence supportingregarding the amounts and disclosures in the financial statements, assessingstatements. Our audit also included evaluating the accounting principles used and significant estimates made by management, andas well as evaluating the overall presentation of the financial statement presentation.statements. We believe that our audit providesprovide a reasonable basis for our opinion.


Critical Audit Matter

The accompanying consolidatedcritical audit matter communicated below is a matter arising from the current period audit of the financial statements have been prepared assuming that was communicated or required to be communicated to the Company will continue as a going concern. As discussedaudit committee and that: (1) relates to accounts or disclosures that are material to the financial statements and (2) involved our especially challenging, subjective or complex judgments. The communication of the critical audit matter does not alter in Note 1(b) toany way our opinion on the consolidated financial statements, the Company has a significant amount of debt that is due within twelve months and experienced recurring losses from operations, which raises substantial doubt about its ability to continuetaken as a going concern. Management's plans in regard whole, and we are not, by communicating the critical audit matter below, providing a separate opinion on the critical audit matter or on the account or disclosureto these matters are also described in Note 1(b). The financial statements do not include any adjustments that might result from the outcome of this uncertainty.which it relates.

Deferred Tax Asset Valuation Allowance

Description of the Matter

As more fully described in Note 11, Income Taxes, as of December 31, 2021, the Company had deferred tax assets of $49.8 million before a valuation allowance of $46.0 million in the U.S. and foreign jurisdictions.   Deferred tax assets are reduced by a valuation allowance if, based upon the weight of all available evidence, it is more likely than not that some portion, or all, of the deferred tax assets will not be realized.  Management’s analysis of the realizability of its deferred tax assets was critical to our audit because the assessment process by jurisdiction is complex, involves judgment, and includes assumptions that may be affected by future market or economic conditions.



How We

Addressed the

Matter in Our

Audit

We obtained an understanding, evaluated the design and tested the operating effectiveness of controls over the Company’s income tax process, including the Company’s assessment of the realizability of deferred tax assets.  This included testing controls over management’s review of the valuation allowance position and the deferred tax rollforward by jurisdiction.  

We evaluated the Company’s assessment of the realizability of deferred tax assets, including management’s evaluation of the sources of taxable income considered in determining whether a valuation allowance is required and management’s assessment of all available evidence, both positive and negative, to determine the amount of the valuation allowance.  Among other audit procedures performed, we involved our tax professionals to evaluate the application of tax law in the Company’s assessment and the resulting valuation allowance.  We also tested the Company’s scheduling of the reversal of existing taxable temporary differences and evaluated the adequacy of the Company’s financial statement disclosure in Note 11 to the consolidated financial statements related to this tax matter.  

/s/ PricewaterhouseCoopersErnst & Young LLP

San Jose, California
September  27, 2017

We have served as the Company’s auditor since2021.

Dallas, Texas

March 9, 2022



REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM


To

Board ofDirectors andStockholders

DZS Inc.

Opinion onthefinancial statements

We have audited the Board of Directors and Shareholder of

DASAN Network Solutions, Inc. (formerly, DASAN Network Solutions, Inc.)

In our opinion, theaccompanying consolidated balance sheet of DZS Inc. (a Delaware corporation) and subsidiaries (the “Company”) as of December 31, 2015 and2020, the related consolidated statements of comprehensive income(loss)income (loss), of stockholder’sstockholders’ equity, and non-controlling interest and of cash flows for each of the two years inyear then ended, and the period ended December 31, 2015,related notes (collectively referred to as the “financial statements”). In our opinion, the financial statements present fairly, in all material respects, the financial position of DASAN Zhone Solutions, Inc. (formerly, DASAN Network Solutions, Inc.) and its subsidiariesthe Company as of December 31, 20152020, and the results of theirits operations and theirits cash flows for each of the two years in the periodyear then ended, December 31, 2015 in conformity with accounting principles generally accepted in the United States of America.

Basisfor opinion

These financial statements are the responsibility of the Company’s management. Our responsibility is to express an opinion on thesethe Company’s financial statements based on our audits.audit. We conducted our audits of these statementsare a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company in accordance with the auditingU.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audit in accordance with the standards of the Public Company Accounting Oversight Board (United States).PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. Anmisstatement, whether due to error or fraud. Our audit includesincluded performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence supportingregarding the amounts and disclosures in the financial statements, assessingstatements. Our audit also included evaluating the accounting principles used and significant estimates made by management, andas well as evaluating the overall presentation of the financial statement presentation.statements. We believe that our audits provideaudit provides a reasonable basis for our opinion.

/s/ GRANT THORNTON LLP

We served as the Company’s auditor from 2019 to2021.

Dallas, Texas

March 11, 2021


As discussed in Note 1(d) and Note 13 to the consolidated financial statements, the Company has restated its 2015 and 2014 financial statements to correct errors relating to the timing of revenue recognition, balance sheet misclassifications and the recording of certain related party sales transactions.

As discussed in Note 1(h) to the consolidated financial statements, the Company has retroactively adjusted the financial statements for a one-for-five reverse stock split.

/s/ Samil PricewaterhouseCoopers

Seoul, Korea
July 28, 2016, except for Note 1 (d),Note 1(h) and Note 13 as to which the date is September 27, 2017



DASAN ZHONE SOLUTIONS,

DZS INC. AND SUBSIDIARIES

Consolidated Balance Sheets

(In thousands, except par value)

 

 

As of December 31,

 

 

 

2021

 

 

2020

 

Assets

 

 

 

 

 

 

 

 

Current assets:

 

 

 

 

 

 

 

 

Cash and cash equivalents

 

$

46,666

 

 

$

45,219

 

Restricted cash

 

 

6,808

 

 

 

9,200

 

Accounts receivable - trade, net of allowance for doubtful accounts of

     $17,735 as of December 31, 2021 and $3,954 as of December 31, 2020

 

 

86,114

 

 

 

97,253

 

Other receivables

 

 

10,621

 

 

 

9,165

 

Inventories

 

 

56,893

 

 

 

39,572

 

Contract assets

 

 

2,184

 

 

 

6,182

 

Prepaid expenses and other current assets

 

 

5,690

 

 

 

5,332

 

Total current assets

 

 

214,976

 

 

 

211,923

 

Property, plant and equipment, net

 

 

9,842

 

 

 

7,146

 

Right-of-use assets from operating leases

 

 

12,640

 

 

 

18,483

 

Goodwill

 

 

6,145

 

 

 

3,977

 

Intangible assets, net

 

 

5,115

 

 

 

3,377

 

Deferred tax assets, net

 

 

-

 

 

 

1,405

 

Other assets

 

 

8,950

 

 

 

5,919

 

Total assets

 

$

257,668

 

 

$

252,230

 

Liabilities and Stockholders’ Equity

 

 

 

 

 

 

 

 

Current liabilities:

 

 

 

 

 

 

 

 

Accounts payable - trade

 

$

64,258

 

 

$

49,250

 

Short-term debt - bank, trade facilities and secured borrowings

 

 

-

 

 

 

13,787

 

Contract liabilities

 

 

6,091

 

 

 

4,400

 

Operating lease liabilities

 

 

4,097

 

 

 

4,494

 

Accrued and other liabilities

 

 

16,032

 

 

 

16,707

 

Total current liabilities

 

 

90,478

 

 

 

88,638

 

Long-term debt - related party

 

 

-

 

 

 

29,754

 

Contract liabilities - non-current

 

 

3,044

 

 

 

2,471

 

Operating lease liabilities - non-current

 

 

12,103

 

 

 

15,959

 

Pension liabilities

 

 

16,527

 

 

 

20,052

 

Other long-term liabilities

 

 

3,609

 

 

 

1,777

 

Total liabilities

 

 

125,761

 

 

 

158,651

 

Commitments and contingencies (Note 14)

 

 

 

 

 

 

 

 

Stockholders’ equity:

 

 

 

 

 

 

 

 

Common stock, 36,000 shares authorized, 27,505 and 21,958 shares issued and outstanding as of December 31, 2021 and December 31, 2020, respectively, at $0.001 par value

 

 

27

 

 

 

22

 

Additional paid-in capital

 

 

223,336

 

 

 

147,997

 

Accumulated other comprehensive loss

 

 

(4,457

)

 

 

(2,124

)

Accumulated deficit

 

 

(86,999

)

 

 

(52,316

)

Total stockholders’ equity

 

 

131,907

 

 

 

93,579

 

Total liabilities and stockholders’ equity

 

$

257,668

 

 

$

252,230

 

 December 31, 2016 December 31, 2015
   (As restated)
Assets   
Current assets:   
Cash and cash equivalents$17,893
 $9,095
Restricted cash6,650
 4,764
Short-term investments993
 
Accounts receivable, net of allowances for sales returns and doubtful accounts of $1,143 in 2016 and $868 in 2015   
Trade receivables38,324
 17,712
Related parties13,311
 14,575
Other receivables   
Others12,068
 11,268
Related parties171
 1,742
Current deferred tax assets
 327
Inventories31,032
 13,976
Prepaid expenses and other current assets4,131
 951
Total current assets124,573
 74,410
Property and equipment, net6,288
 2,251
Goodwill3,977
 693
Intangible assets, net8,767
 3
Non-current deferred tax assets
 1,058
Other assets1,842
 4,811
Total assets$145,447
 $83,226
Liabilities, Stockholders’ Equity and Non-controlling Interest   
Current liabilities:   
Accounts payable   
Others30,681
 14,936
Related parties430
 
Short-term debt17,599
 21,848
Other payables   
Others2,040
 1,352
Related parties6,940
 133
Deferred revenue1,901
 
Accrued and other liabilities8,163
 2,982
Total current liabilities67,754
 41,251
Long-term debt - related parties6,800
 
Deferred revenue1,674
 
Other long-term liabilities2,351
 510
Total liabilities78,579
 41,761
Commitments and contingencies (Note 14)

 

Stockholders’ equity and non-controlling interest   
Common stock, authorized 36,000 shares, 16,375 shares and 9,493 shares outstanding as of December 31, 2016 and December 31, 2015 at $0.001 par value (1)
16
 9
Additional paid-in capital89,174
 47,680
Other comprehensive loss(2,815) (1,765)
Accumulated deficit(19,923) (4,597)
Total stockholders' equity66,452
 41,327
Non-controlling interest416
 138
Total stockholders' equity and non-controlling interest66,868
 41,465
Total liabilities, stockholders’ equity and non-controlling interest$145,447
 $83,226
(1) Authorized and outstanding share amounts reflect the one-for-five reverse stock split effected on February 28, 2017.

See accompanying notes to consolidated financial statements.



DASAN ZHONE SOLUTIONS,

DZS INC. AND SUBSIDIARIES

Consolidated Statements of Comprehensive Income (Loss)

(In thousands, except per share data)

 

 

Years ended December 31,

 

 

 

2021

 

 

2020

 

 

 

 

 

 

 

 

 

 

Net revenue

 

$

350,206

 

 

$

300,640

 

Cost of revenue

 

 

229,938

 

 

 

203,761

 

Gross profit

 

 

120,268

 

 

 

96,879

 

Operating expenses:

 

 

 

 

 

 

 

 

Research and product development

 

 

47,052

 

 

 

37,957

 

Selling, marketing, general and administrative

 

 

90,241

 

 

 

63,543

 

Restructuring and other charges

 

 

12,310

 

 

 

-

 

Impairment of long-lived assets

 

 

1,735

 

 

 

6,472

 

Amortization of intangible assets

 

 

1,182

 

 

 

1,432

 

Total operating expenses

 

 

152,520

 

 

 

109,404

 

Operating loss

 

 

(32,252

)

 

 

(12,525

)

Interest income

 

 

107

 

 

 

77

 

Interest expense

 

 

(345

)

 

 

(2,035

)

Loss on extinguishment of debt

 

 

-

 

 

 

(1,369

)

Other income (expense), net

 

 

1,020

 

 

 

(3,729

)

Loss before income taxes

 

 

(31,470

)

 

 

(19,581

)

Income tax provision

 

 

3,213

 

 

 

3,501

 

Net loss

 

 

(34,683

)

 

 

(23,082

)

 

 

 

 

 

 

 

 

 

Foreign currency translation adjustments

 

 

(4,046

)

 

 

2,796

 

Actuarial gain (loss)

 

 

1,713

 

 

 

(981

)

Comprehensive loss

 

$

(37,016

)

 

$

(21,267

)

Net loss per share

 

 

 

 

 

 

 

 

Basic

 

$

(1.30

)

 

$

(1.07

)

Diluted

 

$

(1.30

)

 

$

(1.07

)

Weighted average shares outstanding

 

 

 

 

 

 

 

 

     Basic

 

 

26,692

 

 

 

21,588

 

     Diluted

 

 

26,692

 

 

 

21,588

 

 Years Ended December 31,
 2016 2015 2014
   (As restated)
 (As restated)
Net revenue:     
Net revenue$121,670
 $114,421
 $108,634
Net revenue - related parties28,634
 24,775
 30,760
Total net revenue150,304
 139,196
 139,394
Cost of revenue:     
Products and services84,415
 81,420
 70,361
Products and services - related parties24,738
 21,890
 28,191
Amortization of intangible assets204
 
 
Total cost of revenue109,357
 103,310
 98,552
Gross profit40,947
 35,886
 40,842
Operating expenses:     
Research and product development25,396
 21,331
 22,805
Selling, marketing, general and administrative27,348
 17,528
 14,834
Amortization of intangible assets1,556
 4
 
Gain from sale of assets(304) 
 
Total operating expenses53,996
 38,863
 37,639
Operating income (loss)(13,049) (2,977) 3,203
Interest income183
 136
 418
Interest expense(830) (532) (526)
Other income (expense), net(145) 266
 122
Income (loss) before income taxes(13,841) (3,107) 3,217
Income tax provision1,487
 232
 1,380
Net income (loss)(15,328) (3,339) 1,837
Net loss attributable to non-controlling interest(2) 
 
Net income (loss) attributable to DASAN Zhone Solutions, Inc.$(15,326) $(3,339) $1,837
      
Foreign currency translation adjustments(1,047) (2,790) (1,997)
Comprehensive loss(16,375) (6,129) (160)
Comprehensive income attributable to non-controlling interest1
 
 
Comprehensive loss attributable to DASAN Zhone Solutions, Inc.$(16,376) $(6,129) $(160)
      
Basic and diluted net income (loss) per share attributable to DASAN Zhone Solutions, Inc. (1)
$(1.32) $(0.36) $0.20
Weighted average shares outstanding used to compute basic and diluted net income (loss) per share (1)
11,637
 9,314
 9,199

(1) All per share and weighted average share amounts have been adjusted to retroactively reflect the one-for-five reverse stock split effected on February 28, 2017.

See accompanying notes to consolidated financial statements.



DASAN ZHONE SOLUTIONS,

DZS INC. AND SUBSIDIARIES

Consolidated Statements of Stockholders' Equity and Non-controlling Interest

Years ended December 31, 2016, 20152021 and 2014

2020

(In thousands)

 

 

Common stock

 

 

Additional

paid-in

 

 

Accumulated

other

comprehensive

 

 

Accumulated

 

 

Total

stockholders'

 

 

 

Shares

 

 

Amount

 

 

capital

 

 

loss

 

 

deficit

 

 

equity

 

Balance as of December 31, 2019

 

 

21,419

 

 

$

21

 

 

$

139,700

 

 

$

(3,939

)

 

$

(29,234

)

 

$

106,548

 

Exercise of stock awards and

   employee stock plan purchases

 

 

539

 

 

 

1

 

 

 

3,684

 

 

 

 

 

 

 

 

 

3,685

 

Stock-based compensation

 

 

 

 

 

 

 

 

4,613

 

 

 

 

 

 

 

 

 

4,613

 

Net loss

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(23,082

)

 

 

(23,082

)

Other comprehensive loss

 

 

 

 

 

 

 

 

 

 

 

1,815

 

 

 

 

 

 

1,815

 

Balance as of December 31, 2020

 

 

21,958

 

 

 

22

 

 

 

147,997

 

 

 

(2,124

)

 

 

(52,316

)

 

 

93,579

 

Issuance of common stock in public

   offering, net of issuance costs

 

 

4,600

 

 

 

5

 

 

 

59,520

 

 

 

 

 

 

 

 

 

59,525

 

Exercise of stock awards and

   employee stock plan purchases

 

 

947

 

 

 

 

 

 

6,829

 

 

 

 

 

 

 

 

 

6,829

 

Stock-based compensation

 

 

 

 

 

 

 

 

8,990

 

 

 

 

 

 

 

 

 

8,990

 

Net loss

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(34,683

)

 

 

(34,683

)

Other comprehensive loss

 

 

 

 

 

 

 

 

 

 

 

(2,333

)

 

 

 

 

 

(2,333

)

Balance as of December 31, 2021

 

 

27,505

 

 

$

27

 

 

$

223,336

 

 

$

(4,457

)

 

$

(86,999

)

 

$

131,907

 

 Common stock 
Additional
paid-in
capital
 
Other
comprehensive
income (loss)
 
Accumulated
deficit
 Total stockholders' equity Non-controlling interest 
Total
stockholders' equity and non-controlling interest
 Shares Amount 
Balances as of December 31, 20139,173
 $9
 $47,188
 $3,022
 $(3,095) $47,124
 $
 $47,124
Issuance of common stock48
 
 1,800
 
 
 1,800
 
 1,800
Increase in parent company investment
 
 (131) 
 
 (131) 
 (131)
Net income
 
 
 
 1,837
 1,837
 
 1,837
Other comprehensive loss
 
 
 (1,997) 
 (1,997) 
 (1,997)
Balances as of December 31, 20149,221
 9
 48,857
 1,025
 (1,258) 48,633
 
 48,633
Issuance of common stock272
 
 1,800
 
 
 1,800
 
 1,800
Net increase in parent company investment
 
 (2,977) 
 
 (2,977) 
 (2,977)
Net loss
 
 
 
 (3,339) (3,339) 
 (3,339)
Other comprehensive loss
 
 
 (2,790) 
 (2,790) 
 (2,790)
Acquisition of controlling interest
 
 
 
 
 
 138
 138
Balances as of December 31, 2015 (As restated)9,493
 9
 47,680
 (1,765) (4,597) 41,327
 138
 41,465
Stock-based compensation8
 
 336
 
 
 336
 
 336
Shares of Legacy Zhone stock as of September 8, 2016 acquired through business combination6,874
 7
 41,435
 
 
 41,442
 
 41,442
Net loss
 
 
 
 (15,326) (15,326) (2) (15,328)
Other comprehensive income (loss)
 
 
 (1,050) 
 (1,050) 3
 (1,047)
Acquisition of additional interest
 
 (277) 
 
 (277) 277
 
Balances as of December 31, 201616,375
 $16
 $89,174
 $(2,815) $(19,923) $66,452
 $416
 $66,868

Share amounts reflect the one-for-five reverse stock split effected on February 28, 2017. See Note 1(g) for information on reverse stock split.

See accompanying notes to consolidated financial statements.



DASAN ZHONE SOLUTIONS,

DZS INC. AND SUBSIDIARIES

Consolidated Statements of Cash Flows

(In thousands)

 

 

Years ended December 31,

 

 

 

2021

 

 

2020

 

Cash flows from operating activities:

 

 

 

 

 

 

 

 

Net loss

 

$

(34,683

)

 

$

(23,082

)

Adjustments to reconcile net loss to net cash

  provided by (used in) operating activities:

 

 

 

 

 

 

 

 

Depreciation and amortization

 

 

4,551

 

 

 

5,143

 

Impairment of long-lived assets and non-cash restructuring

 

 

4,425

 

 

 

6,472

 

Gain on lease termination

 

 

(908

)

 

 

 

Loss on extinguishment of debt

 

 

 

 

 

1,343

 

Amortization of deferred financing costs

 

 

12

 

 

 

149

 

Stock-based compensation

 

 

8,990

 

 

 

4,613

 

Provision for inventory write-down

 

 

4,064

 

 

 

5,531

 

Bad debt expense, net of recoveries

 

 

14,491

 

 

 

3,833

 

Provision for sales returns

 

 

1,132

 

 

 

1,303

 

Provision for warranty

 

 

798

 

 

 

1,072

 

Loss on foreign currency transactions

 

 

335

 

 

 

2,875

 

Loss (gain) of disposal of property, plant and equipment

 

 

(468

)

 

 

18

 

Deferred taxes

 

 

1,329

 

 

 

316

 

Changes in operating assets and liabilities:

 

 

 

 

 

 

 

 

Accounts receivable

 

 

(6,624

)

 

 

(18,782

)

Other receivable

 

 

(4,780

)

 

 

822

 

Inventories

 

 

(23,241

)

 

 

(6,916

)

Contract assets

 

 

3,915

 

 

 

11,341

 

Prepaid expenses and other assets

 

 

(2,965

)

 

 

703

 

Accounts payable

 

 

19,092

 

 

 

11,136

 

Contract liabilities

 

 

2,215

 

 

 

13

 

Accrued and other liabilities

 

 

(6,006

)

 

 

(2,839

)

Net cash provided by (used in) operating activities

 

 

(14,326

)

 

 

5,064

 

Cash flows from investing activities:

 

 

 

 

 

 

 

 

Proceeds from disposal of property, plant and equipment and other assets

 

 

561

 

 

 

 

Purchases of property, plant and equipment

 

 

(5,585

)

 

 

(2,270

)

Acquisition of business, net of cash acquired

 

 

(4,459

)

 

 

 

Net cash used in investing activities

 

 

(9,483

)

 

 

(2,270

)

Cash flows from financing activities:

 

 

 

 

 

 

 

 

Proceeds from issuance of common stock in public offerings, net of issuance costs

 

 

59,525

 

 

 

 

Proceeds from short-term borrowings and line of credit

 

 

 

 

 

13,774

 

Repayments of short-term borrowings and line of credit

 

 

(13,278

)

 

 

(16,696

)

Repayments of long-term borrowings

 

 

 

 

 

(13,125

)

Proceeds from related party term loan

 

 

 

 

 

18,341

 

Repayments of related party term loan

 

 

(29,298

)

 

 

 

Proceeds from factored accounts receivable

 

 

 

 

 

11,645

 

Proceeds from exercise of stock awards and employee stock plan purchases

 

 

6,829

 

 

 

3,685

 

Net cash provided by financing activities

 

 

23,778

 

 

 

17,624

 

Effect of exchange rate changes on cash, cash equivalents and restricted cash

 

 

(917

)

 

 

534

 

Net increase in cash, cash equivalents and restricted cash

 

 

(948

)

 

 

20,952

 

Cash, cash equivalents and restricted cash at beginning of period

 

 

54,587

 

 

 

33,635

 

Cash, cash equivalents and restricted cash at end of period

 

$

53,639

 

 

$

54,587

 

 

 

 

 

 

 

 

 

 

Reconciliation of cash, cash equivalents and restricted cash to balance sheets

 

 

 

 

 

 

 

 

Cash and cash equivalents

 

$

46,666

 

 

$

45,219

 

Restricted cash

 

 

6,808

 

 

 

9,200

 

Long-term restricted cash

 

 

165

 

 

 

168

 

 

 

$

53,639

 

 

$

54,587

 

 

 

 

 

 

 

 

 

 

Supplemental disclosure of cash flow information:

 

 

 

 

 

 

 

 

Cash paid during the period for:

 

 

 

 

 

 

 

 

Interest - bank and trade facilities

 

$

83

 

 

$

788

 

Interest - related party

 

$

108

 

 

$

981

 

Income taxes

 

$

3,029

 

 

$

2,645

 


 Years Ended December 31,
 2016 2015 2014
   (As restated) (As restated)
Cash flows from operating activities:     
Net income (loss)$(15,328) $(3,339) $1,837
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:     
Depreciation and amortization3,173
 1,404
 1,936
Gain from sale of assets(304) 
 
Stock-based compensation336
 
 
Unrealized gain on foreign currency transactions62
 (1,301) (2,066)
Deferred taxes1,408
 (86) (432)
Changes in operating assets and liabilities:     
Accounts receivable(2,092) 11,442
 (16,554)
Inventories(1,080) 6,026
 (4,792)
Prepaid expenses and other current assets3,074
 196
 (9,412)
Accounts payable4,488
 (6,676) 8,432
Accrued expenses9,759
 (3,415) 1,541
Net cash provided by (used in) operating activities3,496
 4,251
 (19,510)
Cash flows from investing activities:     
Cash acquired through the Merger7,013
 
 
(Increase) decrease in restricted cash(2,128) 1,479
 278
Decrease in short-term and long-term loans to others516
 88
 209
Increase in short-term and long-term loans to others(214)��(446) 
Proceeds from disposal of property and equipment and other assets10
 2,230
 2,678
Purchases of short-term investments(1,034) (1,856) (1,899)
Purchases of property and equipment(1,311) (794) (1,137)
Purchases of intangible assets(61) 
 
Payment for purchase of shares of HandySoft, net of cash acquired
 (548) 
Net cash provided by (used in) investing activities2,791
 153
 129
Cash flows from financing activities:     
Repayments of borrowings(27,336) (17,796) (31,384)
Proceeds from short-term borrowings25,069
 17,950
 38,349
Proceeds from long-term borrowings - related party5,000
 
 
Government grants received
 217
 156
Proceeds from issuance of common stock
 1,800
 1,800
Decrease in other capital
 (2,977) (131)
Net cash provided by (used in) financing activities2,733
 (806) 8,790
Effect of exchange rate changes on cash(222) (510) (256)
Net increase (decrease) in cash and cash equivalents8,798
 3,088
 (10,847)
Cash and cash equivalents at beginning of period9,095
 6,007
 16,854
Cash and cash equivalents at end of period$17,893
 $9,095
 $6,007
Supplemental disclosure of cash flow information:     
Shares of the Company's common stock held in escrow949
 
 
Cash paid during the period for:     
Interest$663
 $570
 $474
Income taxes353
 1,496
 2,430

See accompanying notes to consolidated financial statements.


DASAN ZHONE SOLUTIONS,

DZS INC. AND SUBSIDIARIES

Notes to Consolidated Financial Statements


(1) Organization and Summary of Significant Accounting Policies

(a) Description of Business

DASAN Zhone Solutions,

DZS Inc. (formerly known as Zhone Technologies, Inc. and referred(referred to, collectively with its subsidiaries, as "DZS"“DZS” or the "Company"“Company”) is a global provider of networkleading-edge access, solutions and communications equipment for service provider5G transport, and enterprise networks.communications platforms that enable the emerging hyper-connected, hyper-broadband world. The Company provides a wide array of reliable, cost-effective networking technologies, including broadband access, Ethernet switching, mobile backhaul, Passive Optical LAN and software-defined networks, to a diverse customer base that includes more than 1,000 customers in more than 50 countries worldwide.

base.   

DZS was incorporated under the laws of the state of Delaware in June 1999. The Company is headquartered in Plano, Texas with flexible in-house production facilities in Seminole, Florida, and contract manufacturers located in China, India, Korea and Vietnam. The Company also maintains offices to provide sales and customer support at global locations.

On September 9, 2016,August 26, 2020, the Company acquiredfiled a Certificate of Amendment to its Restated Certificate of Incorporation with the Delaware Secretary of State reflecting a company name change from Dasan NetworkZhone Solutions, Inc. ("DNS") throughto DZS Inc.  

(b) Basis of Presentation

The consolidated financial statements are prepared in accordance with U.S. GAAP and include the merger of a wholly owned subsidiaryaccounts of the Company with and into DNS, with DNS surviving as aits wholly owned subsidiarysubsidiaries. All inter-company transactions and balances have been eliminated in consolidation. Certain prior-year amounts have been reclassified to conform to the current-year presentation.

(c) Related Party Transactions

The financial statements include disclosures of material related party transactions. However, disclosure of transactions that are eliminated in the Company (the "Merger"preparation of consolidated financial statements are not required to be disclosed. As of December 31, 2021, Dasan Networks, Inc. (“DNI”). At the effective time owned approximately 36.7% of the Merger, all issued and outstanding shares of capital stock of DNS held by DASAN Networks, Inc. ("DNI") were canceled and converted into the right to receive shares of the Company's common stock in an amount equal to 58% of the issued and outstanding shares of the Company's common stock immediately following the Merger. In connection with the Merger, the Company changed its name from Zhone Technologies, Inc. to DASAN Zhone Solutions, Inc. For periods through September 8, 2016, Zhone Technologies, Inc. is referred to as "Legacy Zhone." The Company’s common stock continues to be traded on the Nasdaq Capital Market,stock. See Note 12 Related Party Transactions for additional information about related party transactions.

(d) Risks and the Company’s ticker symbol was changed from "ZHNE" to "DZSI" effective September 12, 2016. The Company is headquartered in Oakland, California.

(b) Going Concern
Uncertainties

The accompanying consolidated financial statements have been prepared in conformity with generally accepted

accounting principles in the United States ("U.S. GAAP"),GAAP, assuming the Company will continue as a going concern, which contemplates the realization of assets and satisfaction of liabilities in the normal course of business. Accordingly, the consolidated financial statements do not include any adjustments to reflect the possible future effects on the recoverability and classification of assets or the amounts and classification of liabilities that may result from the possible inability of the Company to continue as a going concern.

The Company has incurred significant losses to date and losses from operations may continue. The Company incurredhad a net lossesloss of $15.3 million and $3.3$34.7 million for the yearsyear ended December 31, 20162021 and 2015, respectively. Thenet loss of $23.1 million for the year ended December 31, 2020. As of December 31, 2021, the Company had an accumulated deficit of $19.9$87.0 million and working capital of $56.8 million as of December 31, 2016.$124.5 million. As of December 31, 2016,2021, the Company had approximately $17.9$46.7 million in cash and cash equivalents, which included $9.8$30.1 million in cash balances held by the Company's Korean subsidiary, and $24.4 million in aggregate principal amount of outstanding borrowings under the Company's short-term debt obligations and the Company's loans from DNI. In addition,its international subsidiaries. On January 29, 2021, the Company had $4.2closed an equity offering which resulted in net proceeds to the Company of approximately $59.5 million in aggregate borrowing availability under its. The Company used a portion of the net proceeds from the Equity Offering to pay off the entire remaining outstanding balance of debt with related parties, banks, and other lending institutions. Refer to Note 8 Debt and Note 9 Stockholder's Equity for more details. On February 9, 2022, the Company entered into a Credit Agreement with JPMorgan Chase Bank, N.A., that provides for $30.0 million of revolving credit facilities as of December 31, 2016. The Company had $14.6 million committed as security for letters of credit under these facilities as of December 31, 2016. Due to the amount of short-term debt obligations maturing within the next 12 months and the Company's recurring operating losses, the Company's cash resources may not be sufficient to settle these debt obligations. The Company's ability to continue as a "going concern" is dependent on many factors, including, among other things, its ability to comply with the covenants in its existing debt agreements, its ability to cure any defaults that occur under its debt agreements or to obtain waivers or forbearances with respect to any such defaults, and its ability to pay, retire, amend, replace or refinance its indebtedness as defaults occur or as interest and principal payments come due. Although the process of amending, replacing or refinancing the Company’s short-term debt obligations is ongoing andcommitment.On February 10, 2022, the Company is in active discussions with multiple parties, there is no guarantee that they will result in transactions that are sufficientfiled a “shelf” registration statement on Form S-3 to provide theregister up to $150 million of Company with the required liquidity to remove the substantial doubtcommon stock, representing an indeterminate number of shares of common stock as to its ability to continue as a going concern. If the Company is unable to amend, replace, refinance its debt obligations or raise the capital needed to meet liquidity needs and finance capital expenditures and working capital, the Company may experience material adverse impacts on its business, operating results and financial condition.

The Company has continued its focus on cost control and operating efficiency along with restrictions on discretionary spending, however in order to meet the Company's liquidity needs and finance the Company's capital expenditures and working capital needs for its business, the Company may be requiredissued from time to sell assets, issue debttime pursuant to underwritten public offerings, negotiated transactions, block trades or equity securities, purchase credit insurance or borrow on potentially unfavorable terms. In addition, the Company may be requireda combination of these methods at indeterminate prices. Refer to reduce the scope of its planned product development, reduce sales and marketing efforts and reduce its operations in low margin regions, including reductions in headcount. Note 17 Subsequent Events for more details.

Based on the Company's current plans and current business conditions, the Company believes that its focused operating


expense discipline along with its existing cash, cash equivalents and available credit facilitiesfacility will be sufficient to satisfy its anticipated cash requirements for at least the next 12 months howeverfrom the factors discussed above raise substantial doubt about the Company'sdate of this Annual Report on Form 10-K.

The Company’s ability to meet its obligations as they become due in the ordinary course of business for the next 12 months will depend on its ability (i) to achieve forecasted results of operations, and (ii) continue asto effectively manage working capital requirements. Management’s belief that it will achieve forecasted results of operations assumes that, among other things, the Company will continue to be successful in implementing its business strategy.

In December 2019, a going concern. The accompanying consolidated financial statements do not include any adjustmentsstrain of coronavirus, now known to cause COVID-19, was reported to have surfaced in Wuhan, China. Since that may result fromtime, the outcomewidespread and sustained transmission of the uncertainties set forth above.

(c) Risksvirus has reached global pandemic status. In response to the pandemic, many national and Uncertainties
As resultinternational health agencies recommended, and many countries and state, provincial and local governments implemented various measures, including travel bans and restrictions, limitations on public and private gatherings, business closures or operating restrictions, social distancing, and shelter-in-place orders. Although some of these measures have since been lifted, the health effects of the Merger, DNI owned approximately 58%pandemic and the above measures taken in response thereto have had an effect on the global economy in general and have materially impacted and will likely continue to impact the Company’s financial condition,


results of operations and cash flows. Given the ongoing and dynamic nature of the outstanding sharesvirus and its variants, and the worldwide response related thereto, it is difficult to predict the full impact of the Company's common stock as of December 31, 2016. Thereafter, for so long as DNI and its affiliates hold sharesCOVID-19 pandemic on our business. Due to the uncertainty around the future economic impact of the Company's common stock representing at least a majority ofpandemic, the votes, DNI will be able to freely nominate and elect all the members of the Company's board of directors. The directors elected by DNI will have the authority to make decisions affecting the Company's capital structure, including the issuance of additional capital stock or options, the incurrence of additional indebtedness, the implementation of stock repurchase programs, and the declaration of dividends. The interests of DNI may not coincide with the interests of the Company's other stockholders or with holders of the Company's indebtedness. DNI’s ability to control all matters submitted to the Company's stockholders for approval limits the ability of other stockholders to influence corporate matters and, as a result, the Company may take actions that the Company's other stockholders or holders of our indebtedness do not view as beneficial. See Note 2, Note 13 and Note 14 to the consolidated financial statements for additional information.

As discussed above in Note 1(b), there is also substantial doubt about the Company's ability to continue as a going concern. The accompanying consolidated financial statements do not include any adjustments that might be necessary if the Company is unable to continue as a going concern.
(d) Restatement of Previously Reported Consolidated Financial Statements
The Company identified errors related to the timing of revenue recognition and the classification of certain related party revenue, related party cost of revenue and related royalty feesfair value measurements used in the consolidated financial statements forCompany’s impairment assessments could be negatively impacted and could result in future impairments of goodwill, intangibles and other long-lived assets. During the year ended December 31, 2015 and December 31, 2014. In addition, the restatement includes corrections of certain other balance sheet misclassifications.  The Company has concluded that these errors were material2021, our revenues increased by 16% compared to the consolidated financial statements for the year ended December 31, 20152020, however the impact of a continued COVID-19 pandemic or sustained measures taken to limit or contain the outbreak could continue to have a material and December 31, 2014,adverse effect on our business, financial condition, results of operations, and have restated those periodscash flows.

The recent outbreak of the coronavirus in this filing.

China and other countries has negatively impacted our supply chain in recent months. Supply chain pricing, freight and logistics costs, availability, and extended lead-times became a challenge in 2021 as the world economy recovered from the COVID-19 pandemic. As we continue to incur elevated costs for components and expedite fees, our supply chain and operations teams continue to focus on managing through a constrained environment, thereby enabling DZS to maximize shipments despite elongated lead times. We remain cautious about continued supply chain headwinds that challenge the industry and anticipate a constrained supply chain environment to persist throughout 2022.

Concentration of Risk

Financial instruments, which potentially subject the Company to concentrations of credit risk, consist primarily of cash and cash equivalents, accounts receivable and contract assets. Cash and cash equivalents consist principally of financial deposits and money market accounts that are principally held with various domestic and international financial institutions with high credit standing.

The following schedules reconcileCompany’s customers include competitive and incumbent local exchange carriers, competitive access providers, internet service providers, wireless carriers and resellers serving these markets. The Company performs ongoing credit evaluations of its customers and generally does not require collateral. Allowances are maintained for potential doubtful accounts based upon the amounts as previously reported in the consolidated financial statements forexpected collectability of accounts receivable.

For the year ended December 31, 20152021, 2 customers represented 19% and December 31, 2014 to the corresponding restated amounts (in thousands, except per share data):

Consolidated Balance Sheet
  December 31, 2015
  As Previously Reported Restatement Adjustments As Restated
Cash and cash equivalents (1)
 $10,015
 $(920) $9,095
Restricted cash (1)
 3,844
 920
 4,764
Accounts receivable - Trade 27,084
 (9,372) 17,712
Accounts receivable - Related Party 5,644
 8,931
 14,575
Inventories 13,900
 76
 13,976
Total current assets 74,775
 (365) 74,410
Total assets 83,591
 (365) 83,226
Other comprehensive loss (1)
 (1,775) 10
 (1,765)
Accumulated deficit (4,222) (375) (4,597)
Total stockholders' equity 41,692
 (365) 41,327
Total liabilities and stockholders' equity and non-controlling interest 83,591
 (365) 83,226
(1) The misclassification error related to restricted cash as12% of December 31, 2015.



Consolidated Statement of Comprehensive Loss
   
  December 31, 2015
  As Previously Reported Restatement Adjustments As Restated
Net revenue $127,890
 $(13,469) $114,421
Net revenue - Related Party(1)
 12,135
 12,640
 24,775
Total revenue 140,025
 (829) 139,196
Cost of revenue 92,664
 (11,244) 81,420
Cost of revenue - Related Party 10,722
 11,168
 21,890
Total cost of revenue 103,386
 (76) 103,310
Gross Profit 36,639
 (753) 35,886
Selling, marketing, general and administrative expense (1)
 17,919
 (391) 17,528
Operating income (loss) (2,615) (362) (2,977)
Other income (expense), net

 279
 (13) 266
Income (loss) before income taxes (2,732) (375) (3,107)
Net loss (2,964) (375) (3,339)
Comprehensive loss (5,764) (365) (6,129)
Basic and diluted net loss per share (0.32) (0.04) (0.36)

Consolidated Statement of Comprehensive Loss
   
  December 31, 2014
  As Previously Reported Restatement Adjustments As Restated
Net revenue $124,648
 $(16,014) $108,634
Net revenue - Related Party (1)
 15,226
 15,534
 30,760
Total revenue 139,874
 (480) 139,394
Cost of revenue 84,598
 (14,237) 70,361
Cost of revenue - Related Party 13,954
 14,237
 28,191
Total cost of revenue 98,552
 
 98,552
Gross Profit 41,322
 (480) 40,842
Selling, marketing, general and administrative expense (1)
 15,314
 (480) 14,834

(1) As discussed in Note 13, the Company did not appropriately classify certain brand royalty fee of $0.4 million and $0.5 million as a reduction ofnet revenue, for the years ended December 31, 2015 and December 31, 2014.

Consolidated Statement of Cash Flows
   
  December 31, 2015
  As Previously Reported Restatement Adjustments As Restated
Net cash provided by (used in) operating activities (1)

 $4,261
 $(10) $4,251
Net cash provided by (used in) investing activities (1)
 294
 (141) 153
(1) The Company did not appropriately classify restricted cash of $0.9 million separately from cash and cash equivalents as of December 31, 2015.


Consolidated Statement of Cash Flows
   
  December 31, 2014
  As Previously Reported Restatement Adjustments As Restated
Net cash provided by (used in) investing activities (1)
 908
 (779) 129

(1) The Company did not appropriately classify restricted cash of $0.8 million separately from cash and cash equivalents as of December 31, 2014
The disclosures in these notes to consolidated financial statements include schedules reconciling the amounts previously reported to the corresponding restated amounts in their respective sections.
(e) Basis of Presentation
The consolidated financial statements are prepared in accordance with accounting principles generally accepted in the United States and include the accounts of the Company, its wholly-owned subsidiaries and a subsidiary in which it has a controlling interest. All inter-company transactions and balances have been eliminated in consolidation.
As discussed more fully in Note 2, on September 9, 2016, the acquisition of DNS was consummated through the Merger of a wholly owned subsidiary of the Company with and into DNS, with DNS surviving as a wholly owned subsidiary of the Company.
At the effective time of the Merger, all issued and outstanding shares of capital stock of DNS held by DNI were canceled and converted into the right to receive shares of the Company's common stock in an amount equal to 58% of the issued and outstanding shares of the Company's common stock immediately following the Merger. As a result, immediately following the effective time of the Merger, DNI held 58% of the outstanding shares of the Company's common stock and the holders of the Company's common stock immediately prior to the Merger retained, in the aggregate, 42% of the outstanding shares of the Company's common stock.
The Merger has been accounted for as a reverse acquisition under which DNS was considered the accounting acquirer of the Company. As such, the consolidated financial results of the Company forrespectively. For the year ended December 31, 2016 presented2020, 2 customers represented 14% and 13% of net revenue, respectively.

As of December 31, 2021, 2 customers represented 26% and 10% of net accounts receivable, respectively. As of December 31, 2020, 2 customers represented 17% and 16% of net accounts receivable, respectively.

As of December 31, 2021, and December 31, 2020, net accounts receivable from customers in countries other than the consolidated financial statements reflectUnited States represented 79% and 89%, respectively.

In 2017, the operating results of DNSCompany entered into an agreement with a customer in India to supply product for a state sponsored broadband project. The Company substantially completed its obligations under the agreement in 2018, and its consolidated subsidiaries forall amounts due were billed under the period commencing on the first dayterms of the applicable period through September 8, 2016 and the operating results of both DNS and Legacy Zhone and their respective consolidated subsidiaries for the period September 9 throughagreement by December 31, 2016.2020. The Company billed the customer, which is a state government sponsored entity, approximately $59.0 million and collected payments of approximately $41.7 million, leaving a balance sheet of the Companyapproximately $17.3 million as of December 31, 2016 includes2020. The remaining $17.3 million balance is substantially beyond the fair valuecustomers contractual payment terms, and the Company has been actively working with the customer and third parties in India to arrange payment of the assets and liabilitiesentire remaining balance of Legacy Zhone as$17.3 million. The Company recorded an allowance for doubtful accounts of $3.1 million on December 31, 2020, for a partial payment promised but not received. In late March 2021, the customer’s state government parent experienced difficulty passing a budget further impacting the ability of the effective datecustomer to make agreed-upon partial payments to us. In light of this development, the Merger. Those assets includeCompany recognized an additional allowance of $14.2 million during the fair valuethree months ended March 31, 2021. During the fourth quarter 2021, the Company recovered approximately $0.3 million of acquired intangible assets and goodwill. Dueaccounts receivable related to the foregoing, the Company’s financial results for the year ended December 31, 2016 are not comparable to its financial results for prior years.

Except as otherwise specifically noted herein, all references to the "Company" refer to (i) DNS and its consolidated subsidiaries for periods through September 8, 2016 and (ii) the Company and its consolidated subsidiaries for periods on or after September 9, 2016.
(f) Consolidated Subsidiaries
Details of the Company's consolidated subsidiaries ascustomer. As of December 31, 20162021, the Company has a recorded allowance for doubtful accounts of $16.7 million related to this receivable. The Company will continue to pursue collection of the entire outstanding balance and December 31, 2015any amounts collected will be recognized in the period which they are as follows:
    Percentage of ownership (%)
  Location December 31, 2016 December 31, 2015
Dasan Network Solutions, Inc. (U.S. subsidiary) US 100% 100%
Dasan Network Solutions, Inc. (Korean subsidiary) Korea 100% 100%
DASAN Network Solutions Japan Co., Ltd. (formerly: HandySoft Japan Co., Ltd.) Japan 69.06% 50.25%
DASAN Vietnam Co., Ltd Vietnam 100% N/A
(g)received. In the event the Company’s efforts to collect from this customer prove unsuccessful, DZS may seek payment through other means, including through legal action.

(e) Use of Estimates


The preparation of the consolidated financial statements in conformity with generally accepted accounting principles in the United States of AmericaU.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenue and expenses during the reporting period. Actual results could differ materially from those estimates.


(h) Reverse Stock Split
On February 28, 2017,

(f) Revenue Recognition

Revenue from contracts with customers is recognized when control of the promised goods or services is transferred to the customers, in an amount that reflects the consideration the Company filedexpects to be entitled to in exchange for those goods or services.

The Company generates revenue primarily from sales of products and services, including, extended warranty service, software and customer support. Revenue from product sales is recognized at a Certificate of Amendment with the Delaware Secretary of State to amend the Company's Restated Certificate of Incorporation, which amendment effected a one-for-five reverse stock splitpoint in time when control of the Company's common stock and reducedgoods is transferred to the authorized sharescustomer, generally occurring upon shipment or delivery, dependent upon the terms of the Company's common stock from 180 million to 36 million. As a resultunderlying contract. Many of the reverse stock split, the number of shares of the Company’s common stock then issued and outstanding was reduced from approximately 81.9 million to approximately 16.4 million. References to shares of the Company's common stock, stock options (and associated exercise price) and restricted stock units in this Annual Report on Form 10-K are provided on a post-reverse stock split basis.

(i) Revenue Recognition
The Company recognizes revenue when the earnings process is complete. The Company recognizes product revenue upon shipment of product under contractual terms which transfer title to customers upon shipment, under normal credit terms, net of estimated sales returns and allowances at the time of shipment. Revenue is deferred if there are significant post-delivery obligations or if the fees are not fixed or determinable. When significant post-delivery obligations exist, revenue is deferred until such obligations are fulfilled. The Company’s arrangements generally do not have any significant post-delivery obligations. If the Company’s arrangements include customer acceptance provisions revenue is recognized which the Company typically considers a formality. In situations when the customer acceptance terms are more than a formality, transfer of control usually occurs upon obtaining the signed acceptance certificate from the customer, unless the Company can objectively demonstrate that the delivered products or services meet all the acceptance criteria specified in the arrangement prior to obtaining the signed acceptance.customer. In those instances where revenue is recognizedtransfer of control occurs prior to obtaining the signed acceptance certificate, the Company usesconsiders a number of factors, including successful completion of customer testing as the basis to objectively demonstrate that the delivered products or services meet all the acceptance criteria specified in the arrangement. The Company also considers historical acceptancearrangement, its experience with the customer as well as the payment terms specified in the arrangement, when revenue is recognized prior to obtaining the signed acceptance certificate. When collectability is not reasonably assured, revenue is recognized when cash is collected.
The Company makes certain sales to product distributors. These customers are given certain privileges to return a portion of inventory. Return privileges generally allow distributors to return inventory based on a percent of purchases made within a specific period of time. The Company recognizes revenue on sales to distributors that have contractual return rights when the products have been sold by the distributors, unless there is sufficient customer specific sales and sales returns history to support revenue recognition upon shipment. In those instances when revenue is recognized upon shipment to distributors, the Company uses historical rates of return from the distributors to provideits experience with other contracts for estimated product returns.
The Company derives revenue primarily from stand-alone sales of itssimilar products.  In certain cases, the Company’s products are sold along with services, which include education, training, installation, and/or extended warranty services. As such, some of the Company’s sales have multiple deliverables. The Company’s products and services qualify as separate units of accounting and are deemed to be non-contingent deliverables as the Company’s arrangements typically do not have any significant performance, cancellation, termination and refund type provisions. Products are typically considered delivered upon shipment.

Revenue from services is generally recognized over time on a ratable basis over the contract term, using an output measure of progress, as the contracts usually provide the customer equal benefit throughout the contract period. The Company typically invoices customers for support contracts in advance, for periods ranging from one to five years.

Transaction price is calculated as selling price net of variable consideration. Sales to certain distributors are made under arrangements which provide the distributors with volume discounts, price adjustments, and other allowances under certain circumstances. These adjustments and allowances are accounted for as variable consideration. To estimate variable consideration, the Company analyzes historical data and current economic trends, and changes in customer demand for the Company's products, among other factors. Historically, variable consideration has not been a significant component of the Company’s contracts with customers.

For contracts with customers that contain multiple performance obligations, the Company accounts for the promised performance obligations separately as individual performance obligations if they are distinct. In determining whether performance obligations meet the criteria for being distinct, the Company considers a number of factors, including the degree of interrelation and interdependence between obligations and whether or not the good or service significantly modifies or transforms another good or service in the contract. After identifying the separate performance obligations, the transaction price is allocated to the separate performance obligations on a relative standalone selling price basis. Standalone selling prices for products are determined using either an adjusted market assessment or expected cost-plus margin. For customer support and extended warranty services, standalone selling price is primarily based on the prices charged to customers, when sold separately. Unsatisfied and partially unsatisfied performance obligations as of the end of the reporting period primarily consist of products and services for which customer purchase orders have been accepted and that are in the process of being delivered.

The Company records contract assets when it satisfies a performance obligation but does not have an unconditional right to consideration and records accounts receivable when it satisfies a performance obligation and has an unconditional right to consideration. The Company records contract liabilities when cash payments (or unconditional rights to receive cash) are received in advance of fulfilling its performance obligations.

The Company’s payment terms vary by the type and location of its customer and the products or services offered. For certain products or services and customer types, the Company requires payment before the products or services are delivered to the customer.

Other related policies and revenue information

Warranties

Products sold to customers include standard warranties, typically for one year, covering physical operation and software bug fixes and minor updates such that the product continues to function according to published technical specifications. These standard warranties are assurance type warranties and do not offer any services in addition to the assurance that the product will continue working as specified. Therefore, standard warranties are not considered separate performance obligations. Instead, the expected cost of warranty is accrued as expense as discussed below. Optional extended warranties, typically between one and three years, and for up to five years, are sold with certain products and include additional support services. The transaction price for extended warranties is accounted for as service revenue and recognized ratably over the period duringlife of the contract.

The Company records estimated costs related to standard warranties upon product shipment or upon identification of a specific product failure. The Company recognizes estimated warranty costs when it is probable that a liability has been incurred and the amount of loss is reasonably estimable. The estimates are based upon historical and projected product failure and claim rates, historical costs incurred in correcting product failures and information available related to any specifically identified product failures. Significant judgment is required in estimating costs associated with warranty activities and the Company's estimates are limited to information available to the Company at the time of such estimates. In some cases, such as when a specific product failure is first identified or a new product is introduced, the Company may initially have limited information and


limited historical failure and claim rates upon which to base its estimates, and such estimates may require revision in future periods. The recorded amount is adjusted from time to time for specifically identified warranty exposure.

Contract Costs

The Company recognizes an asset for certain costs to fulfill a contract if it is determined that such costs relate directly to a contract or anticipated contracts, can be determined to generate or enhance resources that will be used in satisfying related performance obligations in the future, and are expected to be recovered. Such costs are amortized on a systematic basis that is consistent with the transfer to the customer of the goods to which the servicesasset relates. Contract costs primarily consist of sales commissions that are amortized as sales and marketing expense.

Financing

The Company applies the practical expedient not to be performed.

For multiple deliverable revenue arrangements,adjust the Company allocates revenue to products and services usingpromised amount of consideration for the relative selling price method to recognize revenue when the revenue recognition criteria for each deliverable are met. The selling priceeffects of a deliverable is based on a hierarchy andfinancing component if the Company is unable to establish vendor-specific objective evidence of selling price (“VSOE”) it uses third-party evidence of selling price (“TPE”), and if no such data is available, it uses a best estimated selling price (“BSP”). In most instances, particularly as it relates to products,expects, at contract inception, that the period between when the Company istransfers a good or service to the customer and when the customer pays for the good or service will be one year or less. During the year ended December 31, 2021 and 2020, such financing components were not ablesignificant.

Shipping and Handling

The Company has elected to establish VSOEaccount for all deliverables inshipping and handling activities that occur after the customer has obtained control of a good as a fulfillment cost rather than as an arrangement with multiple elements. This may be due to infrequently selling each element separately, not pricing products withinadditional promised service. As a narrow range, or only having a limited sales history. When VSOE cannot be established,result, the Company attempts to establish accrues the selling pricecosts of each element based on TPE. Generally,shipping and handling when the Company’s marketing strategy differs from thatrelated revenue is recognized.

Unsatisfied Performance Obligations

The majority of the Company’s peers andCompany's performance obligations in its contracts with customers relate to contracts with duration of less than one year. The Company does not disclose the Company’s offerings contain a significant levelvalue of customization and differentiation such that the comparable pricingunsatisfied performance obligations for contracts with an original expected length of products with similar functionality cannot be obtained. Furthermore, the Company is unable to reliably determine what similar competitor products’ selling prices are on a stand-alone basis. Therefore, the Company is typically not able to determine TPE for the Company’s products.

When the Company is unable to establish selling price using VSOEone year or TPE, the Company uses BSP. The objective of BSP is to determine the price at which the Company would transact a sale if the product or service were sold on a stand-alone basis. The

BSP of each deliverable is determined using average discounts from list price from historical sales transactions or cost plus margin approachesless, based on the factors, including but not limitedelected practical expedients. The transaction price allocated to noncancellable unsatisfied performance obligations included in contracts with duration of more than 12 months is reflected in contract liabilities – non-current on the consolidated balance sheets.

Disaggregation of Revenue

The following table presents the revenues by source (in thousands):

 

 

Years ended December 31,

 

 

 

2021

 

 

2020

 

Products

 

$

330,093

 

 

$

280,988

 

Services and other

 

 

20,113

 

 

 

19,652

 

Total

 

$

350,206

 

 

$

300,640

 

The following table present revenues by geographical region (in thousands):

 

 

Years ended December 31,

 

 

 

2021

 

 

2020

 

Americas

 

$

101,473

 

 

$

61,900

 

Europe, Middle East, Africa

 

 

70,046

 

 

 

64,580

 

Asia

 

 

178,687

 

 

 

174,160

 

Total

 

$

350,206

 

 

$

300,640

 

(g) Allowances for Doubtful Accounts and Sales Returns

The Company records an allowance for doubtful accounts for estimated losses resulting from the inability of customers to make payments for amounts owed to the Company’s gross margin objectivesCompany. The allowance for doubtful accounts is recorded as an expense under general and pricing practices plus customer and market specific considerations.

administrative expenses. The Company has established TPEbases its allowance on periodic assessments of its customers’ liquidity and financial condition through analysis of information obtained from credit rating agencies, financial statement review and historical and current collection trends. Though the allowance for its training, education and installation services. TPE is determineddoubtful accounts at each balance sheet date represents the Company’s best estimate at that point in time, an increase or decrease to the allowance for doubtful accounts may be required in the future based on competitor pricesupdated estimates of customers' ability or willingness to pay or if previously reserved balances have been collected. 


Activity under the Company’s allowance for similar deliverables when sold separately. These service arrangements are typically short term in nature and are largely completed shortly after delivery of the product. Training and education services are based on a daily rate per person and vary according to the type of class offered. Installation services are based on daily rate per person and vary according to the complexity of the products being installed.doubtful accounts is comprised as follows (in thousands):

 

 

Years ended December 31,

 

 

 

2021

 

 

2020

 

Balance at beginning of period

 

$

3,954

 

 

$

393

 

Charged to expense, net of recoveries

 

 

14,491

 

 

 

3,833

 

Utilization/write offs/exchange rate differences

 

 

(710

)

 

 

(272

)

Balance at end of period

 

$

17,735

 

 

$

3,954

 

Extended warranty services are priced based on the type of product and are sold in one to five year durations. Extended warranty services include the right to warranty coverage beyond the standard warranty period. In substantially all of the arrangements with multiple deliverables pertaining to arrangements with these services, the Company has used and intends to continue using VSOE to determine the selling price for the services. The Company determines VSOE based on its normal pricing practices for these specific services when sold separately.
(j) Allowances for Sales Returns and Doubtful Accounts

The Company records an allowance for sales returns for estimated future product returns related to current period product revenue. The allowance for sales returns is recorded as a reduction of revenue and an allowance against accounts receivable.increase to accrued and other liabilities. The Company bases its allowance for sales returns on periodic assessments of historical trends in product return rates and current approved returned products. If the actual future returns were to deviate from the historical data on which the reserve had been established, the Company’s future revenue could be adversely affected.

The Company records an allowance for doubtful accounts for estimated losses resulting from the inability of customers to make payments for amounts owed to the Company. The allowance for doubtful accounts is recorded as an expense to general and administrative expenses. The Company bases its allowance on periodic assessments of its customers’ liquidity and financial condition through analysis of information obtained from credit rating agencies, financial statement review and historical collection trends. Additional allowances may be required in the future if the liquidity or financial conditions of its customers deteriorate, resulting in impairment in their ability to make payments.

Activity under the Company’s allowance for sales returns and doubtful accounts wasis comprised as follows (in thousands):

 

 

Years ended December 31,

 

 

 

2021

 

 

2020

 

Balance at beginning of period

 

$

390

 

 

$

343

 

Charged to revenue

 

 

1,132

 

 

 

1,303

 

Utilization/write offs/exchange rate differences

 

 

(649

)

 

 

(1,256

)

Balance at end of period

 

$

873

 

 

$

390

 

 Years ended December 31,
 2016 2015 2014
Balance at beginning of year$868
 $136
 $589
Charged to revenue466
 767
 
Utilization/write offs(149) 
 (450)
Exchange differences(42) (35) (3)
Balance at end of year$1,143
 $868
 $136
The allowance for doubtful accounts was $0.8 million and $0.9 million as of December 31, 2016 and 2015, respectively.
(k)

(h) Inventories

Inventories are stated at the lower of cost or market,net realizable value, with cost being determined using thecomputed based on an adjusted standard basis,which approximates actual cost on an average or first-in, first-out (FIFO) method.basis. In assessing the net realizable value of inventories, the Company is required to make judgments as to future demand requirements and compare these with the current or committed inventory levels. Once inventory has been written down to its estimated net realizable value, its carrying value cannot be increased due to subsequent changes in demand. To the extent that a severe decline in forecasted demand occurs, or the Company experiences a higher incidence of inventory obsolescence due to rapidly changing technology and customer requirements, the Company may incur significant expenses for excess and obsolete inventory.


(l) The Company also evaluates the terms of its agreements with its suppliers and establishes accruals for estimated losses on adverse purchase commitments as necessary, applying the same lower of cost or net realizable value approach that is used to value inventory.

(i) Foreign Currency Translation

For operations outside the United States, the Company translates assets and liabilities of foreign subsidiaries, whose functional currency is the applicable local currency, at end of period exchange rates. Revenues and expenses are translated at periodic average rates. The adjustment resulting from translating the financial statements of such foreign subsidiaries is included in accumulated other comprehensive loss,income (loss), which is reflected as a separate component of stockholders’ equity. GainsRealized and unrealized gains and losses on foreign currency transactions are included in other income (expense) in the accompanying consolidated statementstatements of comprehensive income (loss).

(m) Our primary exposure to foreign currency exchange rate movements is with our Korea subsidiary, that has a Korean Won functional currency, our Japan subsidiary, that has a Japanese Yen functional currency, and our Germany subsidiary, that has a Euro functional currency.

(j) Comprehensive Income (Loss)

There have been no material items reclassified out of accumulated other comprehensive income (loss) and into net income (loss). The Company’s other comprehensive lossincome (loss) for the years ended December 31, 2016, 2015,2021 and 20142020 is comprised of only foreign currency translations.

(n) Concentration of Risk
Financial instruments which potentially subject the Company to concentrations of credit risk consist primarily of cashtranslation gains and cash equivalentslosses and accounts receivable. Cashactuarial gains and cash equivalents consist principally of financial deposits and money market accounts. Cash and cash equivalents are principally held with various domestic financial institutions with high credit standing.
The Company’s customers include competitive and incumbent local exchange carriers, competitive access providers, Internet service providers, wireless carriers and resellers serving these markets. The Company performs ongoing credit evaluations of its customers and generally does not require collateral. Allowances are maintained for potential doubtful accounts.
For the year ended December 31, 2016, three customers represented 16%, 14% (a related-party) and 10% of net revenue, respectively. For the year ended December 31, 2015, four customers represented 26%, 21%, 17% (a related-party) and 10% of net revenue, respectively. For the year ended December 31, 2014, four customers represented 17%, 14%, 12% and 11% (a related-party) of net revenue, respectively.
The target customers forlosses from the Company’s products are network service providers that operate voice, datapension liabilities.

(k) Property, Plant and video communications networks. There are a limited number of potential customers in this target market. The Company expects that a significant portion of the Company’s future revenue will depend on sales of its products to a limited number of customers. Any failure of one or more customers to purchase products from the Company for any reason, including any downturn in their businesses, would seriously harm the Company’s business, financial condition and results of operations.

As of December 31, 2016, two customers accounted for 13% (a related-party) and 10% of net accounts receivable. As of December 31, 2015, two customers accounted for 45% (a related-party) and 22% and of net accounts receivable, respectively. As of December 31, 2016 and December 31, 2015, receivables from customers in countries other than the United States represented 87% and 93%, respectively, of net accounts receivable.
The Company’s products are concentrated primarily in the communications equipment market, which is highly competitive and subject to rapid changes. Significant technological changes in the industry could adversely affect operating results. The Company’s inventories include components that may be specialized in nature, and subject to rapid technological obsolescence. The Company actively manages inventory levels, and the Company considers technological obsolescence and potential changes in product demand based on macroeconomic conditions when estimating required allowances to reduce recorded inventory amounts to market value. Such estimates could change in the future.
The Company’s growth and ability to meet customer demands are also dependent on its ability to obtain timely deliveries of components from suppliers and contract manufacturers. The Company depends on contract manufacturers and sole or limited source suppliers for several key components. If the Company were unable to obtain these components on a timely basis, the Company would be unable to meet its customers’ product delivery requirements which could adversely impact operating results. While the Company is not solely dependent on one contract manufacturer, it expects to continue to rely on contract manufacturers to fulfill a portion of its product manufacturing requirements.

(o) Equipment

Property, and Equipment

Propertyplant, and equipment are stated at cost, less accumulated depreciation, and are depreciated using the straight-line method over the estimated useful life of each asset. The useful life of each asset category is as follows:

Asset Category

Useful Life

Asset CategoryUseful Life

Furniture and fixtures

3 to 4 years

Machinery and equipment

3

2 to 610 years

Computers and software

3 to 5 years

Leasehold improvements

Shorter of remaining lease term
or estimated useful lives


Upon retirement or sale, the cost and related accumulated depreciation of the asset are removed from the balance sheet and the resulting gain or loss is reflected in operating expenses.

(p)

(l) Long-Lived Assets

The Company reviews long-lived assets for impairment whenever events or changes in circumstances indicate that the carrying value of an asset or asset group may not be recoverable based on expected undiscounted cash flows attributablerecoverable. Factors the Company considers important which could trigger an impairment review, include, but are not limited to, significant changes in the manner of use the assets, significant changes in the strategy for the Company's overall business or significant negative economic trends. If this evaluation indicates that the value of an intangible asset ormay be impaired an assessment of the recoverability of the net carrying value of the asset group.over its remaining useful life is made. Recoverability of assets to be held and used is measured by comparing the carrying amount of an asset to the future net undiscounted cash flows expected to be generated by the asset. If the carrying amount of an asset exceeds its estimated future net undiscounted cash flows, an impairment expense is recognized in the amount by which the carrying amount of the asset exceeds the fair value of the asset. If this assessment indicates that the cost of an intangible asset is not recoverable, based on the estimated undiscounted future cash flows or other comparable market valuations of the entity or technology acquired over the remaining amortization period, the net carrying value of the related intangible asset will be reduced to fair value and the remaining amortization period may be adjusted. An impairment loss is recognized to the extent that the carrying amount exceeds the asset’s fair value.

In the application of impairment testing, the Company is required to make estimates of future operating trends and resulting cash flows and judgments on discount rates and other variables. Actual future results and other assumed variables could differ from these estimates.

Any assets to be disposed of would be separately presented in the balance sheet and reported at the lower of the carrying amount or fair value less costs to sell, and would no longer be depreciated. The assets and liabilities of a disposed group classified as held for sale would be presented separately in the appropriate asset and liability sections of the balance sheet.

(m) Goodwill and Other Intangible Assets

Goodwill and other acquisition-related intangible assets not subject to amortization are tested annually for impairment and are tested for impairment more frequently if events and circumstances indicate that the asset might be impaired. The Company estimatesquantitative goodwill impairment test is a two-step process with step one requiring the comparison of the reporting unit's estimated fair value with the carrying amount of its long-livednet assets. If necessary, step two of the impairment test determines the amount of goodwill impairment to be recorded when the reporting unit's recorded net assets based on a combinationexceed its fair value. In 2021, the Company changed its annual impairment testing date to October 31 to ensure the completion of market information primarily obtained from third-party quotes and online markets. its annual goodwill impairment test prior to the end of its annual reporting period, thereby aligning impairment testing procedures with its year-end financial reporting.

In the application of the impairment testing, the Company is required to make estimates of future operating trends and resulting cash flows and judgments on discount rates and other variables. Actual future results and other assumed variables could differ from these estimates. During the years ended December 31, 2016, 2015, and 2014, the Company recorded no impairment expenses related to the impairment of long-lived assets.

(q) Goodwill and Other Acquisition-Related Intangible Assets
Goodwill and other acquisition-related intangible assets not subject to amortization are tested annually for impairment using a two-step approach, and are tested for impairment more frequently if events and circumstances indicate that the asset might be impaired. An impairment loss is recognized to the extent that the carrying amount exceeds the asset’s fair value. In the application of the impairment testing, the Company is required to make estimates of future operating trends and resulting cash flows and judgments on discount rates and other variables. Actual future results and other assumed variables could differ from these estimates.   The Company's future operating performance will be impacted by the future amortization of intangible assets, potential expenses related to purchased in-process research and development for future acquisitions, and potential impairment expenses related to goodwill. Accordingly, the allocation of the purchase price of the acquired companies to intangible assets and goodwill has a significant impact on the Company's future operating results. The allocation process requires management to make significant estimates and assumptions, including estimates of future cash flows expected to be generated by the acquired assets and the appropriate discount rate for these cash flows. Should different conditions prevail, the Company would have to perform an impairment review that might result in material write-downs of intangible assets and/or goodwill. Other factors the Company considers important which could trigger an impairment review, include, but are not limited to, significant changes in the manner of use of its acquired assets, significant changes in the strategy for our overall business or significant negative economic trends. If this evaluation indicates that the value of an intangible asset may be impaired, an assessment of the recoverability of the net carrying value of the asset over its remaining useful life is made. If this assessment indicates that the cost of an intangible asset is not recoverable, based on the estimated undiscounted future cash flows or other comparable market valuations of the entity or technology acquired over the remaining amortization, the net carrying value of the related intangible asset will be reduced to fair value and the remaining amortization period may be adjusted.  Due to uncertain market conditions and potential changes in the Company's strategy and product portfolio, it is possible that forecasts used to support its intangible assets may change in the future, which could result in additional non-cash expenses that would adversely affect its results of operations and financial condition.

(r)

(n) Business Combination

Combinations

The Company allocates the fair value of purchase consideration to the tangible assets acquired, liabilities assumed and intangible assets acquired based on their estimated fair values. The excess of the fair value of purchase consideration over the fair values of these identifiable assets and liabilities is recorded as goodwill. When determining the fair values of assets acquired and liabilities assumed, management makes significant estimates and assumptions, especially with respect to intangible assets and certain tangible assets such as inventory.

Critical estimates in valuing certain tangible and intangible assets include but are not limited to future expected cash flows from the underlying assets and discount rates. Management’s estimates of fair value are based upon assumptions believed to be reasonable, but which are inherently uncertain and unpredictable and, as a result, actual results may differ from estimates.

(s)

(o) Stock-Based Compensation

Stock-based compensation cost is measured at the grant date of the awards based on the estimated fair value of the awards. The Company determines the fair value of restricted stock units based on the Company’s stock price on the date of grant. The Company uses the Black Scholes model to estimate the fair value of options, which is affected by the Company's stock price as well as assumptions regarding a number of complex and subjective variables. These variables include the Company's expected stock price volatility over the expected term of the awards, actual and projected employee option exercise behaviors, risk-free interest rates and expected dividends. The expected stock price volatility is based on the weighted average of the historical volatility of the Company's common stock over the most recent period commensurate with the estimated expected life of the Company's stock options. The Company based its expected life assumption on its historical experience and on the terms and conditions of the stock awards granted. Risk-free interest rates reflect the yield on zero-coupon U.S.United States Treasury securities.


The Company amortizes the value of the stock-based compensation to expense using the straight-line method. The value of the portion of the award that is ultimately expected to vest is recognized as expense over the requisite service periods in the Company’s consolidated statementstatements of comprehensive income (loss). The Company attributes the values of the stock-based compensation to expense using the straight-line method.

Awards of stock options granted to non-employees under the Company’s share-based compensation plans are accountedaccounts for at fair value determined by using the Black Scholes option pricing model. These options are generally immediately exercisable and expire seven to ten years from the date of grant. Non-employee options subject to vesting are re-valuedforfeitures as they become vested.
(t)occur.

(p) Income Taxes

The Company uses the asset and liability method to account for income taxes. Under this method, deferred tax assets and liabilities are determined based on differences between the financial reporting and the income tax bases of assets and liabilities. Deferred tax assets and liabilities are measured using enacted tax rates and laws that will be in effect when the differences are expected to reverse. Valuation allowances are established, when necessary, to reduce deferred tax assets to the amount expected to be realized. Based

The Company does not recognize a tax benefit unless it concludes that it is more likely than not that the benefit will be sustained on audit by the taxing authority based solely on the cumulative losses incurred,technical merits of the associated tax position. If the recognition threshold is met, the Company has recordedrecognizes a full valuation allowance against its net deferred tax assetsbenefit measured at December 31, 2016 duethe largest amount of the tax benefit that, in the Company’s judgment, is greater than 50 percent likely to the significant uncertainty regarding whether the deferred tax assets will be realized.

(u) The Company records interest and penalties related to uncertain tax positions in interest expense and in general and administrative expense, respectively.

(q) Net Income (Loss) per Share Attributable to DASAN Zhone Solutions, Inc.

Basic net income (loss) per share attributable to DASAN Zhone Solutions, Inc. is computed by dividing the net income (loss) attributable to DASAN Zhone Solutions, Inc. for the period by the weighted average number of shares of common stock outstanding during the period. The calculation of diluted net income (loss) per share attributable to DASAN Zhone Solutions, Inc. gives effect to common stock equivalents; however, potential common equivalent shares are excluded if their effect is antidilutive. Potential common stock equivalent shares are composed of restricted stock units, unvested restricted shares and incremental shares of common equivalent sharesstock issuable upon the exercise of stock options.

(v) Shipping and Handling Costs
The Company records costs related to shipping and handling in cost of revenue for all periods presented.
(w)

(r) Research and Development Cost

Costs

Costs related to research and development, which primarily consists of labor and benefits, supplies, facilities, consulting, and outside service fees, are expensed as incurred.


(x) Warranty

(s) Cash and Cash Equivalents

Cash and cash equivalents consist of cash and short-term investments (if any) with original maturities of less than three months.

(t) Leases

The Company offersdetermines if an arrangement is a standard warranty for its hardware productslease at inception. The Company’s lease agreements generally contain lease and non-lease components. Payments under the Company’s lease arrangements are primarily fixed. Lease assets and liabilities are recognized at the present value of one year,the future lease payments at the lease commencement date. The interest rate used to determine the present value of the future lease payments is our incremental borrowing rate, because the interest rate implicit in our leases is not readily determinable. The Company’s incremental borrowing rate is estimated to approximate the interest rate on a collateralized basis with similar terms and payments. The Company’s lease terms include periods under options to extend the option to purchase an extended warranty of up to five years, depending on the product type. The Company recognizes estimated costs related to warranty activities upon product shipment or upon identification of a specific product failure. The Company recognizes estimated warranty costslease when it is probablereasonably certain that a liability has been incurred and the amount of loss is reasonably estimable. The estimates are based upon historical and projected product failure and claim rates, historical costs incurred in correcting product failures and information available related to any specifically identified product failures. Significant judgment is required in estimating costs associated with warranty activities and the Company estimates are limited to information available to the Company at the time of such estimates. In some cases, such as when a specific product failure is first identified or a new product is introduced, the Company may initially have limited information and limited historical failure and claim rates upon which to base its estimates, and such estimates may require revision in future periods. The recorded amount is adjusted from time to time for specifically identified warranty exposure.

(y)we will exercise that option.

(u) Recent Accounting Pronouncements

On May 28, 2014, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2014-09, Revenue from Contracts with Customers, which requires an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of promised goods or services to customers. The ASU will replace most existing revenue recognition guidance in U.S. GAAP when it becomes effective. The standard permits the use of either the retrospective or cumulative effect transition method.

In August 2015,December 2019, the FASB issued ASU 2015-14,2019-12: Simplifying the Accounting for Income Taxes (Topic 740), which defersremoves certain exceptions to the effective dategeneral principles in Topic 740 and improves consistent application of the guidance inand simplifies GAAP for other areas of Topic 740 by clarifying and amending existing guidance. This ASU No. 2014-09, Revenue from Contracts with Customer, for all entities by one year. With the deferral, the new standard is effective for thefiscal years beginning after December 15, 2020, and interim periods within those fiscal years, with early adoption permitted. The Company onadopted this new accounting standard effective January 1, 2018. Early adoption is permitted, but not before the original effective date of January 1, 2017. In May 2016, the FASB issued ASU 2016-12, Revenue from Contracts with Customers, Narrow-Scope Improvements and Practical Expedients,2021 which provides clarification on how to assess collectibility, present sales tax, treat noncash consideration, and account for completed and modified contracts at the time of transition of ASU 2014-09. The effective date of this updated guidance for the Company is the same as the effective date of ASU 2014-09, which is January 1, 2018. The Company does not plan to early adopt this guidance. The Company is currently assessing the potential impact of adopting this new guidance on its consolidated financial statements.

In July 2015, the FASB issued ASU No. 2015-11, Simplifying the Measurement of Inventory, which requires an entity to measure inventory at the lower of cost and net realizable value. The guidance does not apply to inventory that is measured using last-in, first-out ("LIFO") or the retail inventory method. The guidance applies to all other inventory, which includes inventory that is measured using first-in, first-out ("FIFO") or average cost. The guidance is effective for the Company on January 1, 2017, and will be adopted accordingly. ASU No. 2015-11 should be applied prospectively with earlier application permitted as of the beginning of an interim or annual reporting period. The adoption of this standard will have no impact on the Company's consolidated financial statements.
In November 2015, the FASB issued ASU 2015-17, Income Taxes, Balance Sheet Classification of Deferred Taxes, which simplifies the classification of deferred tax assets and liabilities as non-current in the balance sheet. The updated guidance is effective for the Company on January 1, 2017, and will be adopted accordingly. The adoption of this standard willdid not have a material impact on the Company's consolidated financial statements.
statements or disclosures.

In February 2016,March 2020, the FASB issued ASU 2016-02, Leases. ASU 2016-02 requires that lease arrangements longer than 12 months result in an entity recognizing an asset and liability. The updated guidance is effective for the Company on January 1, 2019, and early adoption is permitted. The Company does not plan to early adopt this guidance. The Company expects its assets and liabilities to increase as a resultNo. 2020-04 (Topic 848), Reference Rate Reform - Facilitation of the adoptionEffects of this standard. The Company is currently assessingReference Rate Reform on Financial Reporting, which provides temporary optional expedients and exceptions to the potential impact of adopting this newexisting guidance on its consolidatedcontract modifications and hedge accounting to ease the financial statements. The Company is not able to quantify or cannot reasonably estimate quantitative informationreporting burdens related to the impact ofexpected market transition from the London Interbank Offered Rate (LIBOR) and other interbank offered rates to alternative reference rates, such as the Secured Overnight Financing Rate. The standard was effective upon issuance and may generally be applied through December 31, 2022, to any new standard on its consolidated financial statements at this time.

In March 2016, the FASB issuedor amended contracts, hedging relationships, and other transactions that reference LIBOR. The ASU 2016-09, Improvementsis not expected to Employee Share-Based Payment Accounting, which requires entities to simplify several aspects of the accounting for share-based payment transactions, including income tax consequences, classification of awards as either equity or liabilities, and classification on statements of cash flows. The guidance is effective for the Company on January 1, 2017, and has been adopted in the first quarter of 2017. The adoption of this standard had no material impact on the Company's consolidated financial statements.
In August 2016, FASB issued ASU 2016-15, Statement of Cash Flows, Classification of Certain Cash Receipts and Cash Payments, which addresses eight specific cash flow issues with the objective of reducing the existing diversity in practice. The updated guidance is effective for the Company on January 1, 2018. Early adoption is permitted. The Company continues to assess all the potential impacts of the new standard and anticipates this standard may have a material impact on its consolidated

financial statements. The Company is not able to quantify or cannot reasonably estimate quantitative information related to the impact of the new standard on itsour consolidated financial statements at this time.
statements.

In NovemberJune 2016, FASB issued ASU 2016-18, Statement2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Cash Flows, Restricted Cash,Credit Losses on Financial Instruments, which require that a statement of cash flows to explain the change during the period in the total of cash, cash equivalents and amounts generally described as restricted cash and restricted cash equivalents. The updated guidance is effective forrequires the Company beginning on January 1, 2018. Early adoption is permitted. Adoption of this ASU is applied using a retrospective approach. As a result, the Company will no longer present transfers between cashto measure and cash equivalentsrecognize expected credit losses for financial assets held and restricted cash in the consolidated cash flow statements.

not accounted for at fair value through net income. In January 2017, FASB issued ASU 2017-04, Simplifying the Test for Goodwill Impairment, which simplifies the accounting for goodwill impairment. The updated guidance is effective for the Company on January 1, 2020,November 2018, April 2019 and will be adopted accordingly. Early adoption is permitted. The Company is currently assessing the potential impact of adopting this new guidance on its consolidated financial statements. The Company is not able to quantify or cannot reasonably estimate quantitative information related to the impact of the new standard on its consolidated financial statements at this time.
In May 2017,2019, the FASB issued ASU No. 2017-09, Compensation—Stock Compensation2018-19, Codification Improvements to Topic 326, Financial Instruments - Credit Losses, ASU No. 2019-04,


Codification Improvements to Topic 326, Financial Instruments - Credit Losses, ASU No. 2019-05, Financial Instruments - Credit Losses (Topic 718)326): Scope of modification accounting.Targeted Transition Relief, and ASU No. 2019-11, Codification Improvements to Topic 326, Financial Instruments - Credit Losses, which provided additional implementation guidance on the previously issued ASU. The purpose ofCompany adopted the amendment is to clarify which changes to the terms or conditions of a share-based payment award require an entity to apply modification accounting. The updated guidance is effective for the Company beginning on January 1, 2018.2022. The CompanyASU is currently assessing the potentialnot expected to have a material impact of adopting this new guidance on itsour consolidated financial statements.


(2) Merger

Business Combinations

Optelian Acquisition

On September 9, 2016,February 5, 2021, the Company acquired DNSOptelian Access Networks Corporation (“Optelian”), a corporation incorporated under the laws of Canada and registered extra-provincially in the Province of Ontario, pursuant to an acquisition agreement whereby the Company purchased all the outstanding shares of Optelian (the “Optelian Acquisition”). Following the closing of the Optelian Acquisition, Optelian became the Company’s wholly owned subsidiary.

Optelian was a leading optical networking solution provider. This acquisition introduced the “O-Series” to the DZS portfolio of carrier grade optical networking products with 100 gigabits per second (Gig) and above capability, expanding DZS product portfolios by providing environmentally hardened, high capacity, and flexible solutions at the network edge.

The purchase price of $7.5 million included cash paid to the shareholders and option holders of Optelian, cash paid to retire Optelian's outstanding debt on the date of acquisition, and contingent payments to shareholders (in thousands):

Purchase consideration

 

 

 

 

Retirement of Optelian debt

 

$

4,929

 

Payment to shareholders and option holders

 

 

664

 

Contingent payment to shareholders

 

 

1,897

 

Total purchase consideration

 

$

7,490

 

The payment to shareholders and option holders includes a $0.3 million holdback and $1.9 million contingent consideration based on a certain percentage of future revenue of certain Optelian products through the Mergerend of 2023. The maximum amount of payment under contingent consideration provision is not limited per the acquisition agreement.    

The acquisition was recorded as a business combination with valuations of the assets acquired and liabilities assumed at their acquisition date fair value using level three inputs, defined as unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities. In the first quarter of 2021, the Company recorded fair values of assets acquired and liabilities assumed as provisional. In the third quarter of 2021, we recorded a measurement-period adjustment of $0.5 million to reduce the value of intangible assets acquired with a corresponding offset to goodwill. The adjustment did not have a material impact on the amortization expense recorded in the previous quarters. We completed the purchase price allocation for Optelian acquisition in the fourth quarter of 2021.

The following summarizes the final fair values of the assets acquired and liabilities assumed at the date of acquisition for the Optelian Acquisition (in thousands):

Allocation of purchase consideration

 

 

 

 

Cash and cash equivalents

 

$

1,236

 

Accounts receivable - trade

 

 

460

 

Other receivables

 

 

153

 

Inventories

 

 

448

 

Prepaid expenses and other current assets

 

 

49

 

Property, plant and equipment

 

 

718

 

Intangible assets

 

 

3,160

 

Accounts payable - trade

 

 

(390

)

Contract liabilities

 

 

(169

)

Accrued and other liabilities

 

 

(123

)

Goodwill

 

 

1,948

 

Total purchase consideration

 

$

7,490

 

The purchase price allocation resulted in the recognition of goodwill of approximately $1.9 million, which primarily related to the expected synergies from combining operations. Of this amount, approximately $0.9 million is expected to be deductible for


tax purposes. The following table represents the final estimated fair value and useful lives of identifiable intangible assets acquired (in thousands):

 

 

Estimated

 

 

Estimated

 

 

fair value

 

 

useful life

Intangible assets acquired

 

 

 

 

 

 

Developed technology

 

$

1,780

 

 

5 years

Customer relationships

 

 

490

 

 

5 years

    In-process research and development

 

 

890

 

 

5 years

Total intangible assets

 

$

3,160

 

 

 

 

 

 

 

 

RIFT Acquisition

On March 3, 2021, the Company acquired substantially all of the assets of RIFT, Inc., a network automation solutions company, including all the outstanding shares of RIFT.IO India Private Limited, a wholly owned subsidiary of RIFT, Inc. (collectively “RIFT”). RIFT developed a carrier-grade RIFT.ware software platform that simplifies the deployment of any slice, service, or application on any cloud. The total purchase consideration was $0.5 million, including a $0.2 million holdback that was released in April of 2021 following the fulfillment of certain requirements in the purchase agreement. The Company allocated the purchase price to $0.1 million in net tangible assets, $0.2 million in developed technologies, and $0.2 million in goodwill. As a result of the acquisition, RIFT.IO India Private Limited became a wholly owned subsidiary of the Company with and into DNS, with DNS surviving as a wholly owned subsidiary of the Company. The Merger combines leading technology platforms with a broadened customer base.

At the effective time of the Merger, all issued and outstanding shares of capital stock of DNS held by DNI were canceled and converted into the right to receive shares of the Company's common stock in an amount equal to 58% of the issued and outstanding shares of the Company's common stock immediately following the Merger. Accordingly, at the effective time of the Merger, the Company issued 9,493,016 shares (post reverse stock split) of the Company’s common stock to DNI as consideration in the Merger, of which 949,302 shares (post reverse stock split) are being held in escrow as security for claims for indemnifiable losses in accordance with the merger agreement relating to the Merger. As a result, immediately following the effective time of the Merger, DNI held 58% of the outstanding shares of the Company's common stock and the holders of the Company's common stock immediately prior to the Merger retained, in the aggregate, 42% of the outstanding shares of the Company's common stock.
As described in Note 1(d), the Company accounted for the Merger as a reverse acquisition under the acquisition method of accounting in accordance with ASC 805, "Business Combination." Consequently, for the purpose of the purchase price allocation ("PPA") DNS' assets and liabilities have been retained at their carrying values and Legacy Zhone's assets acquired, and liabilities assumed, by DNS (as the accounting acquirer in the Merger) have been recorded at their fair value measured as of September 9, 2016.
The total purchase consideration in the Merger is based on the number of shares of Legacy Zhone common stock and Legacy Zhone stock options vested and outstanding immediately prior to the closing of the Merger, and was determined based on the closing price of $5.95 per share (post reverse stock split) of the Company's common stock on the September 9, 2016. The estimated total purchase consideration is calculated as follows (in thousands):
  Shares Estimated Fair Value
Shares of Legacy Zhone stock as of September 8, 2016 (1)
 6,874
 $40,902
Legacy Zhone stock options (1)
 198
 540
Total purchase consideration   $41,442
(1) Amount presented has been adjusted to reflect the one-for-five reverse stock split effected on February 28, 2017.
The following table summarizes the allocation of the fair value consideration transferred as of the acquisition date (in thousands):

  
Preliminary
Fair Value as of
September 9, 2016
 
Correction
of
Errors (1)
 
Fair Value as of
December 31, 2016
Cash and cash equivalents $7,013
 $
 $7,013
Accounts receivable 18,847
 (337) 18,510
Inventory 16,456
 
 16,456
Prepaid expenses and other current assets 2,436
 (245) 2,191
Property and equipment 4,339
 
 4,339
Other assets 125
 
 125
Identifiable intangible assets 10,479
 
 10,479
Goodwill 2,820
 464
 3,284
Accounts payable (11,021) 
 (11,021)
Accrued and other liabilities (7,272) 183
 (7,089)
Other long-term liabilities (2,780) (65) (2,845)
Total Indicated Fair Value of Assets $41,442
 $
 $41,442
(1) During the quarter ended December 31, 2016, the Company recorded an out of period adjustment for various errors related to the original preliminary purchase price allocation.
The goodwill was primarily attributed to people, geographic diversification and complementary products. The goodwill arising from the Merger is not tax deductible.
The Company considered the deferred tax liabilities caused by the Merger to be a source of income to support recoverability of acquired deferred tax assets, before considering the recoverability of the acquirer's existing deferred tax assets. Accordingly, the valuation allowance on the acquiree's deferred tax assets was reduced by the deferred tax liabilities caused by the Merger and accounted for as part of the purchase price allocation.
The Company recorded $1.3 million in Merger related costs during the year ended December 31, 2016. These expenses are included in selling, marketing, general and administrative expense.
The following table presents the fair values of the acquired intangible assets at the effective date of the Merger (in thousands, except years):
  
Useful life
(in Years)
 Fair Value
Developed technology 5 $3,060
Customer relationships 10 5,240
Backlog 1 2,179
    $10,479
The following unaudited pro forma condensed combined financial information for the year ended December 31, 2016 and 2015 gives effect to the Merger as if it had occurred at the beginning of 2015. The unaudited pro forma condensed combined financial information has been included for comparative purposes only and is not necessarily indicative of what the combined Company's financial position or results of operations might have been had the Merger been completed as of the date indicated. In addition, the unaudited pro forma condensed combined financial information does not purport to project the future financial position or results of operations of the combined company. The unaudited pro forma condensed combined financial information reflects adjustments related to the Merger, such as to record certain incremental expenses resulting from purchase accounting adjustments (such as amortization expenses in connection with the fair value adjustments to intangible assets and Merger related costs).     
  Years Ended December 31,
(in thousands) 2016 2015
Pro forma total net revenue $202,321
 $240,342
Pro forma net loss (29,514) (11,369)

For the period from September 9, 2016 (the effective date of the Merger) through December 31, 2016, the Company's income statement included $29.0 million of net revenues and $7.6 million of net loss from the Legacy Zhone business.

(3) Fair Value Measurement

The Company utilizes a fair value hierarchy that is intended to increase consistency and comparability in fair value measurements and related disclosures. The fair value hierarchy is based on inputs to valuation techniques that are used to measure fair value that are either observable or unobservable. Observable inputs reflect assumptions market participants would use in pricing an asset or liability based on market data obtained from independent sources while unobservable inputs reflect a reporting entity’s pricing based upon their own market assumptions. The fair value hierarchy consists of the following three levels:

Level 1 –

Inputs are quoted prices in active markets for identical assets or liabilities.

Level 2 –

Inputs are quoted prices for similar assets or liabilities in an active market, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable and market-corroborated inputs which are derived principally from or corroborated by observable market data.

Level 3 –

Inputs are derived from valuation techniques in which one or more significant inputs or value drivers are unobservable.

The following financial instruments are not measured

Assets and Liabilities Measured at fair valueFair Value on the Company’s consolidated balance sheet as of December 31, 2016 and 2015, but require disclosure of their fair values: cash and cash equivalents, short-term investments, accounts receivable, accounts payable and debt. a Recurring Basis

The carrying values of financial instruments such as cash and cash equivalents, short-term investments,restricted cash, accounts receivable and other receivables, accounts payable and accrued liabilities approximate their fair values based on their short-term nature.

The carryingCompany classifies its contingent liability within Level 3 as it includes inputs not observable in the market. The Company estimates the fair value of contingent consideration as the present value of the Company's debt approximatesexpected contingent payments, determined using the revenue forecast for certain Optelian products through the end of 2023. The fair value of contingent liability is generally sensitive to changes in the revenue forecast. Refer to Note 2 Business Combinations for further information.

The following tables present information about the Company’s assets and liabilities that are measured at fair value on a recurring basis using the above input categories (in thousands):

 

 

December 31, 2021

 

 

 

Level 1

 

 

Level 2

 

 

Level 3

 

 

Total

 

Cash and cash equivalents

 

$

46,666

 

 

$

-

 

 

$

-

 

 

$

46,666

 

Restricted cash

 

 

6,808

 

 

 

-

 

 

 

-

 

 

 

6,808

 

Contingent liability

 

 

-

 

 

 

-

 

 

 

2,121

 

 

 

2,121

 

Total

 

$

53,474

 

 

$

-

 

 

$

2,121

 

 

$

55,595

 


 

 

December 31, 2020

 

 

 

Level 1

 

 

Level 2

 

 

Level 3

 

 

Total

 

Cash and cash equivalents

 

$

45,219

 

 

$

-

 

 

$

-

 

 

$

45,219

 

Restricted cash

 

 

9,200

 

 

 

-

 

 

 

-

 

 

 

9,200

 

Total

 

$

54,419

 

 

$

-

 

 

$

-

 

 

$

54,419

 

The change in fair value of the Company’s contingent liability is included in selling, marketing, general and administrative expenses on the consolidated statements of comprehensive income (loss). The following table reconciles the beginning and ending balances of the Company’s Level 3 contingent liability (in thousands):

 

 

Year ended December 31,

 

 

 

2021

 

Balance at beginning of period

 

$

-

 

Initial fair value of contingent liability

 

 

1,897

 

Net change in fair value

 

 

224

 

Balance at end of period

 

$

2,121

 

Assets and Liabilities Measured at Fair Value on a Non-Recurring Basis

In conjunction with the restructuring in Hanover, Germany and the headquarters relocation to Plano, Texas, we wrote down certain long-lived assets held and used to their fair values based onvalue of $0.2 million, resulting in an impairment charge of $4.5 million, which was included in earnings for the current rates availableperiod. The impaired long-lived assets primarily consisted of right-of-use assets, and we used estimated sub-lease payment data to fair value the Company for debt of similar termsrespective assets. We concluded that this fair value measurement should be categorized within Level 2.

(4) Cash and maturities.

(4)Cash and Cash Equivalents and Restricted Cash
Cash Equivalents and Restricted Cash

As of December 31, 20162021 and 2020, the Company's cash, cash equivalents, and restricted cash consisted of financial deposits.  Cash and cash equivalents held within the U.S. are held at FDIC insured depository institutions. Cash and cash equivalents held outside the U.S. totaled $31.3 million and $32.2 million as of December 31, 2021 and December 31, 2015, the Company's cash and cash equivalents comprised financial deposits.2020, respectively. Restricted cash comprisedconsisted primarily of cash restricted for researchperformance and development activitieswarranty bonds.  Long term restricted cash was $0.2 million as of December 31, 2021 and collateral for borrowings.

December 31, 2020 and is included in other assets on the consolidated balance sheets. 

(5) Balance Sheet Detail

Balance sheet detail as of December 31, 20162021 and 20152020 is as follows (in thousands):

Inventories

 

 

As of December 31,

 

 

 

2021

 

 

2020

 

Raw materials

 

$

34,512

 

 

$

16,962

 

Work in process

 

 

1,427

 

 

 

1,486

 

Finished goods

 

 

20,954

 

 

 

21,124

 

Total inventories

 

$

56,893

 

 

$

39,572

 


 2016 2015
   (As restated)
Inventories:   
Raw materials$13,547
 $5,519
Work in process3,705
 2,074
Finished goods13,780
 6,383
 $31,032
 $13,976
Inventories

As of December 31, 2021, the Company had 0 inventories provided as collateral for borrowings from Export-Import Bank of Korea amountedcompared to $14.4$9.6 million as of December 31, 2016.


 2016 2015
Property and equipment, net:   
Furniture and fixtures$20,040
 $20,456
Machinery and equipment4,530
 3,173
Leasehold improvements3,573
 688
Computers and software411
 16
Other922
 438
 29,476
 24,771
Less accumulated depreciation and amortization(22,922) (22,121)
Less government grants(266) (399)
 $6,288
 $2,251
Depreciation2020.

Property, plant and amortizationequipment

 

 

As of December 31,

 

 

 

2021

 

 

2020

 

Property, plant and equipment, net:

 

 

 

 

 

 

 

 

Machinery and equipment

 

$

14,278

 

 

$

13,656

 

Leasehold improvements

 

 

5,219

 

 

 

4,633

 

Computers and software

 

 

3,217

 

 

 

2,829

 

Furniture and fixtures

 

 

1,771

 

 

 

1,123

 

Construction in progress and other

 

 

2,937

 

 

 

716

 

 

 

 

27,422

 

 

 

22,957

 

Less: accumulated depreciation and amortization

 

 

(17,394

)

 

 

(15,445

)

Less: government grants

 

 

(186

)

 

 

(366

)

Total property, plant and equipment, net

 

$

9,842

 

 

$

7,146

 

Depreciation expense associated with property, plant and equipment was $1.3 million, $1.4$2.9 million and $1.9$2.2 million for the years ended December 31, 2016, 20152021 and 2014,2020, respectively.

The Company receives grants from thecertain foreign government entities mainly to support capital expenditures.expenditures in the region. Such grants are deferred and are generally refundable to the extent the Company does not utilize the funds for qualifying expenditures. Once earned, the Company records the grants as a contra amount to the assets and amortizes such amount over the useful lives of the related assets as a reduction to depreciation expense.

As of December 31, 2021, other assets included $4.2 million of capitalized cloud computing implementation costs related to the Company's enterprise resource planning and reporting software. The Company had 0 capitalized cloud computing implementation costs as of December 31, 2020.

Accrued and other liabilities

 

 

As of December 31,

 

 

 

2021

 

 

2020

 

Accrued and other liabilities:

 

 

 

 

 

 

 

 

Accrued warranty

 

$

1,981

 

 

$

1,522

 

Accrued compensation

 

 

7,230

 

 

 

5,692

 

Accrued taxes payable

 

 

2,306

 

 

 

4,736

 

Other accrued expenses

 

 

4,515

 

 

 

4,757

 

 

 

$

16,032

 

 

$

16,707

 

 2016 2015
Accrued and other liabilities (in thousands):   
Accrued warranty$878
 $441
Accrued compensation2,834
 
Other Accrued expenses4,451
 2,541
 $8,163
 $2,982

The Company accrues for warranty costs based on historical trends for the expected material and labor costs to provide warranty services. The Company's standard warranty period is one year from the date of shipment with the ability for customers to purchase an extended warranty of up to five years from the date of shipment. The following table summarizes the activity related to the product warranty liability (in thousands):

liability:

Balance at December 31, 2013$312
Charged to cost of revenue401
Claims and settlements(324)
Balance at December 31, 2014389
Charged to cost of revenue578
Claims and settlements(526)
Balance at December 31, 2015441
Balance assumed with the Merger652
Charged to cost of revenue717
Claims and settlements(925)
Foreign exchange impact(7)
Balance at December 31, 2016$878

 

 

Years ended December 31,

 

 

 

2021

 

 

2020

 

Balance at beginning of period

 

$

1,522

 

 

$

1,611

 

Charged to cost of revenue

 

 

798

 

 

 

1,072

 

Claims, settlements, and pending returns

 

 

(404

)

 

 

(1,189

)

Foreign exchange impact

 

 

65

 

 

 

28

 

Balance at end of period

 

$

1,981

 

 

$

1,522

 


(6) Goodwill

Contract Balances

The opening and Intangible Assetsclosing balances of current and long-term contract assets and contract liabilities related to contracts with customers are as follows:

 

 

Contract

assets

 

 

Contract

liabilities

 

December 31, 2020

 

$

6,182

 

 

$

6,871

 

December 31, 2021

 

 

2,184

 

 

 

9,135

 

Increase (decrease)

 

$

(3,998

)

 

$

2,264

 

Goodwill

The decrease in contract assets during the year ended December 31, 2021 was primarily due to the invoicing of certain unbilled balances where revenue recognition criteria have been met as of December 31, 2016 and December 31, 2015 was as follows (in thousands):

 December 31,
2016
 December 31,
2015
Beginning balance$693
 $
Goodwill from Merger2,820
 693
Correction of errors464
 
Less: accumulated impairment
 
Ending balance$3,977
 $693
2020.

The Company did not recognize impairment loss on goodwillincrease in contract liabilities during the yearsyear ended December 31, 2016, 20152021 was primarily due to amounts being invoiced for certain customers that did not yet meet the revenue recognition criteria. The amount of revenue recognized during the year ended December 31, 2021 that was included in the prior period contract liability balance was $4.4 million. This revenue consists of services provided to customers who had been invoiced prior to the current year. We expect to recognize approximately 67% of outstanding contract liabilities as revenue over the next 12 months and 2014.

Intangible assetsthe remainder thereafter.

The balance of contract cost deferred at December 31, 2021 and 2020 was $0.8 million and $0.5 million, respectively. During the year ended December 31, 2021, the Company recorded $0.5 million in amortization related to contract cost deferred as of December 31, 20162020.

(6) Restructuring and other charges

In March 2021, the Company made the strategic decision to transition DZS GmbH to a sales and research and development center by the end of 2021. In July 2021, the Company came to an agreement with the works council and entered into a social plan that covers statutory benefits and one-time severance obligations. The Company recognized expense for the statutory benefit obligations when such amounts were probable and estimable and the Company recognized expense for the one-time severance when the final terms of the benefit arrangement were communicated to the affected employees. The Company recorded related restructuring and other charges of approximately $11.9 million for the year December 31, 2015 were as follows (in thousands):

  December 31, 2016
  Gross Carrying Amount Accumulated Amortization Government Grant Net
Developed Technology $3,060
 $(203) $
 $2,857
Customer Relationships 5,240
 (321) 
 4,919
Backlog 2,179
 (1,236) 
 943
Other 105
 (34) (23) 48
Total intangible assets, net $10,584
 $(1,794) $(23) $8,767
  December 31, 2015
  Gross Carrying Amount Accumulated Amortization Government Grant Net
Other 40
 (37) 
 3
Total intangible assets, net 40
 (37) 
 3
Amortization expense associated with intangible2021, consisting of termination-related benefits of $8.2 million, an impairment of long-lived assets charge of $2.7 million primarily related to right-of-use assets from operating leases, professional services of $0.9 million, and $0.1 million of other charges. The termination-related benefits are comprised of statutory benefits of $1.7 million and one-time severance obligations of $6.5 million.

In May 2021, the Company made the strategic decision to relocate manufacturing function of Optelian to Seminole, Florida and eliminate redundant workforces. The Company incurred restructuring and other charges of approximately $0.4 million for the year ended December 31, 2016 and 2015 amounted to $1.8 million and $10.0 thousand, respectively. 2021, consisting primarily of termination-related benefits.

As of December 31, 2016,2021, the Company had $0.8 million of accrued liabilities related to the restructuring costs.

(7) Goodwill and Intangible Assets

The following table summarizes the activity related to Goodwill (in thousands):

 

 

As of December 31,

 

 

 

2021

 

 

2020

 

Balance at beginning of period, gross

 

$

4,980

 

 

$

4,980

 

Accumulated impairment at beginning of period

 

 

(1,003

)

 

 

(1,003

)

Goodwill from acquisitions

 

 

2,168

 

 

 

-

 

Balance at end of period

 

$

6,145

 

 

$

3,977

 


The accumulated impairment of goodwill was $1.0 million as of both December 31, 2021 and 2020. The Company recognized 0 impairment loss for goodwill for the years ended December 31, 2021 and 2020.

During the year ended December 31, 2021, the Company recorded goodwill of $1.9 million related to the acquisition of Optelian and $0.2 million related to the acquisition of RIFT, which was allocated to the Americas reporting unit. Refer to Note 2 Business Combinations for further information.   

Intangible assets consisted of the following (in thousands):

 

 

As of December 31, 2021

 

 

Gross Carrying

Amount

 

 

Accumulated

Amortization

 

 

Net

 

 

Weighted Average Remaining

Useful Life

Developed technology

 

$

5,007

 

 

$

(3,464

)

 

$

1,543

 

 

4.1 years

Customer relationships

 

 

5,730

 

 

 

(2,886

)

 

 

2,844

 

 

4.6 years

In-process research and development

 

 

890

 

 

 

(162

)

 

 

728

 

 

4.1 years

Total intangible assets, net

 

$

11,627

 

 

$

(6,512

)

 

$

5,115

 

 

4.4 years

 

 

As of December 31, 2020

 

 

Gross Carrying

Amount

 

 

Accumulated

Amortization

 

 

Net

 

 

Weighted Average Remaining

Useful Life

Developed technology

 

$

3,060

 

 

$

(2,652

)

 

$

408

 

 

0.7 years

Customer relationships

 

 

5,240

 

 

 

(2,271

)

 

 

2,969

 

 

5.7 years

Total intangible assets, net

 

$

8,300

 

 

$

(4,923

)

 

$

3,377

 

 

5.1 years

During the year ended December 31, 2021, the Company recorded $1.9 million, $0.5 million and $0.9 million in developed technology, customer relationships and in-process research and development, respectively, related to the acquisitions of Optelian and RIFT. Refer to Note 2 Business Combinations for further information.

During 2020, the Company recorded an impairment charge of $6.5 million for DZS GmbH intangible assets as part of the Company’s evaluation for impairment, utilizing a present value cash flow model to determine the fair value of the intangible assets. The Company determined that the intangible assets related to DZS GmbH were impaired, due to the financial performance of the reporting unit and loss of a significant customer. The impairment expense was comprised of $3.3 million for developed technology, $2.3 million for customer relationships, and $0.9 million for trade names, respectively. The impairment charge is included in impairment of long-lived assets on the consolidated statements of comprehensive income (loss). The Company did not identify any triggering events for potential impairment of intangible assets in 2021.

The following table summarizes the activity related to intangible assets, net (in thousands):

 

 

As of December 31,

 

 

 

2021

 

 

2020

 

Balance at beginning of period

 

$

3,377

 

 

$

12,381

 

Intangible assets from acquisitions

 

 

3,327

 

 

 

-

 

Less: amortization expense

 

 

(1,589

)

 

 

(2,959

)

Less: impairment charge

 

 

-

 

 

 

(6,472

)

Foreign exchange impact

 

 

-

 

 

 

427

 

Balance at end of period

 

$

5,115

 

 

$

3,377

 

As of December 31, 2021, expected future amortization expense for the years indicated was as follows (in thousands):

2022

 

$

1,177

 

2023

 

 

1,177

 

2024

 

 

1,177

 

2025

 

 

1,177

 

Thereafter

 

 

407

 

Total

 

$

5,115

 


Period Expected Amortization Expense
2017 $2,087
2018 1,145
2019 1,166
2020 1,136
2021 933
Thereafter 2,300
Total $8,767
(7)

(8) Debt

Wells Fargo Bank Facility

As of December 31, 2016,2021, the Company had a $25.0 million revolving line0 debt obligations. During the first half of credit and letter of credit facility (the "WFB Facility") with Wells Fargo Bank ("WFB"). Under the WFB Facility,2021, the Company paid off the outstanding balance of debt with related parties, foreign banks and other lending institutions. The Company has the option of borrowing funds at agreed upon interest rates. The amount that the Company is able to borrow under the WFB Facility varies based on eligible accounts receivable and inventory, as definedno contractual principal payments due in the agreement, as long asnext five years.

The following tables summarize the aggregate amount outstanding does not exceed $25.0


million less the amount committed as security for letters of credit. To maintain availability of funds under the WFB Facility, the Company pays a commitment fee on the unused portion. The commitment fee is 0.25% per annum and is recorded as interest expense.
As of December 31, 2016, the Company had no outstanding borrowings under its WFB Facility and $3.5 million was committed as security for letters of credit. The Company had $3.1 million of borrowing availability under the WFB FacilityCompany’s debt as of December 31, 2016. The amounts borrowed under the WFB Facility bear interest, payable monthly, at a floating rate equal tobeginning of the three-month LIBOR plus a margin based on the Company's average excess availability (as calculated under the WFB Facility). The interest rate on the WFB Facility was 3.50% at December 31, 2016. The maturity date under the WFB Facility is March 31, 2019.period (in thousands):

 

 

As of December 31, 2020

 

 

 

Short-term

 

 

Long-term

 

 

Total

 

Bank and Trade Facilities - Foreign Operations

 

$

13,787

 

 

$

 

 

$

13,787

 

Related party

 

 

 

 

 

29,766

 

 

 

29,766

 

 

 

 

13,787

 

 

 

29,766

 

 

 

43,553

 

Less: unamortized deferred financing costs

 

 

 

 

 

(12

)

 

 

(12

)

 

 

$

13,787

 

 

$

29,754

 

 

$

43,541

 

The Company’s obligations under the WFB Facility are secured by substantially all of its personal property assets and those of its subsidiaries that guarantee the WFB Facility, including their intellectual property. The WFB Facility contains certain financial covenants, and customary affirmative covenants and negative covenants. If the Company defaults under the WFB Facility due to a covenant breach or otherwise, WFB may be entitled to, among other things, require the immediate repayment of all outstanding amounts and sell the Company’s assets to satisfy the obligations under the WFB Facility. On July 3, 2017, the Company executed an agreement with WFB to extend the due date for delivery for the Company's audited financial statements for the year ended December 31, 2016 to September 27, 2017. As of December 31, 2016, the Company was in compliance with the covenants under the WFB Facility.

Bank and Trade Facilities - Foreign Operations

Certain

During prior periods, certain of the Company's foreign subsidiaries have entered into various financing arrangementsarrangement with foreign banks and other lending institutions consisting primarily of revolving lines of credit, trade facilities, term loans and export development loans. These facilities are renewed on an annual basis and are generally secured by a security interest in certain assets of the applicable foreign subsidiaries. Payments under such facilities are made in accordance with the given lender’s amortization schedules.


As of December 31, 2016 and December 31, 2015,2020, the Company had an aggregate outstanding balance of $17.6$13.8 million and $21.8 million, respectively, under such financing arrangements, andarrangements. The weighted average borrowing rates as of December 31, 2020 was 1.8%. During the interest rates per annum applicable tofirst two quarters of 2021, the Company paid the entire outstanding borrowingsbalance under thesesuch financing arrangements were as listed in the tables below (in thousands).
    As of December 31, 2016
    Interest rate (%) Amount
Industrial Bank of Korea Credit facility 2.16 - 2.76 $1,106
 
Shinhan Bank General loan 4.08 3,310
 
Shinhan Bank Trade finance 3.28 - 3.44 1,752
 
NongHyup Bank Credit facility 1.92 - 2.66 482
 
KEB Hana Bank Comprehensive credit loan 2.79 3,501
*
The Export-Import Bank of Korea Export development loan 3.10 7,448
 
      $17,599

* As of June 30, 2017, this balance owed to KEB Hana Bank had been fully repaid.
    As of December 31, 2015
    Interest rate (%) Amount
Industrial Bank of Korea Credit facility 2.04 - 2.34 $3,431  
Shinhan Bank General loan 2.94 3,413  
Shinhan Bank Trade finance 2.80 329  
NongHyup Bank Credit facility 1.60 - 1.95 1,574  
KEB Hana Bank Comprehensive credit loan 3.55 5,421  
The Export-Import Bank of Korea Export development loan 2.94 7,680  
      $21,848  

arrangements. As of December 31, 2016,2021, the Company had $1.60 borrowings outstanding from banks and other lending institutions.    

As of December 31, 2020, the Company had $19.0 million in outstanding borrowings and $9.3 million committed as security for lettersavailable to draw under its letter of credit underfacilities with NongHyup Bank and Korea Development Bank. These letter of credit facilities expired in the third quarter of 2021.

Related Party Debt

During prior periods, certain of the Company's $12.0subsidiaries entered into term loan arrangements with DNI. As of December 31, 2020, the Company had an aggregate outstanding balance of $29.8 million credit facility with certain foreign banks.

(8) Executive Compensation
under such financing arrangements. In the first quarter of 2021, the entire outstanding balance on these term loans was repaid. Interest expense on related party borrowings was $0.1 million and $1.0 million for the years ended December 31, 2021 and 2020, respectively. As of December 31, 2021, the Company had 0 borrowings outstanding from related parties.

PNC Credit Facilities

On September 9, 2016, in connection with the consummation of the Merger,February 27, 2019, the Company entered into a Revolving Credit, Term Loan, Guaranty and Security Agreement with PNC Bank, National Association (“PNC”) and Citibank, N.A. as lenders, and PNC as agent for the lenders (the “PNC Credit Facilities”). On March 26, 2020, the Company paid the outstanding term loan borrowings in full and terminated the PNC Credit Facilities. In association with this debt repayment, the Company recorded a loss on extinguishment of debt of $1.4 million during the three months ended March 31, 2020.

JPMorgan Credit Facility

On February 9, 2022, the Company entered into a Credit Agreement with JPMorgan Chase Bank, N.A., that provides for revolving loans in an amended and restated employment agreement with James Norrod and employment agreements with eachaggregate principal amount of Il Yung Kim and Kirk Misaka, in the respective forms approved by the Board of Directors, eachup to $30 million, up to $15 million of which superseded their respective existing employment arrangements, and eachis available for letters of which had an initial term of one year,credit. Refer to be automatically extendedNote 17 Subsequent Events for additional successive one year terms unless either party elects not to extend the term.more details.


Il Yung Kim
Under the employment agreement between Il Yung Kim and the Company, Mr. Kim agreed to serve as Co-Chief Executive Officer in exchange for an initial annual base salary of $320,000, representing a voluntary 20% salary reduction, which was automatically increased to $400,000 on April 1, 2017. Mr. Kim is also eligible to participate in a performance-based annual bonus program, for which his target bonus is equal to $400,000. Mr. Kim did not earn and was not paid a bonus for his services in 2016.

(9) Stockholders’ Equity

General

The Company has reimbursed Mr. Kim for $30,000 in relocation expenses and provides a monthly housing allowanceauthorized the issuance of up to $6,000. Mr. Kim is also entitled to an additional $30,000 in relocation expenses in the event that his employment is terminated. All such relocation expenses provided to Mr. Kim will be grossed up for taxes. Mr. Kim is also eligible to participate in all health benefits, insurance programs, pension and retirement plans and other employee benefit and compensation arrangements generally available to the Company’s other officers.

In accordance with the terms of his employment agreement, the Board of Directors granted Mr. Kim a stock option award to purchase 200,000 shares of the Company’s common stock under the Company’s Amended and Restated 2001 Stock Incentive Plan, as amended, on September 9, 2016. Mr. Kim’s options have a 10 year term and vest as to 25% of the shares on the first anniversary of the Merger and thereafter vest in 36 equal monthly installments, subject to his continuing to render services to the Company through the applicable vesting date. The exercise price of the options is $5.95 per share, adjusted for the subsequent one-for-five reverse stock split of the Company’s common stock effected on February 28, 2017.
James Norrod
Under the amended and restated employment agreement between James Norrod and the Company, Mr. Norrod agreed to serve as Co-Chief Executive Officer in exchange for an initial annual base salary of $320,000, representing a voluntary 20% salary reduction, which was automatically increased to $400,000 on April 1, 2017. Mr. Norrod was also eligible to participate in a performance-based annual bonus program, for which his target bonus was equal to $400,000. Mr. Norrod did not earn and was not paid this bonus in 2016. The Company paid for or reimbursed Mr. Norrod for reasonable lodging expenses while he was working from the Company’s principal executive offices. Mr. Norrod was also eligible to participate in all health benefits, insurance programs, pension and retirement plans and other employee benefit and compensation arrangements generally available to the Company’s other officers.
In accordance with the terms of his employment agreement, the Board of Directors granted Mr. Norrod a stock option award to purchase 200,000 shares of the Company’s common stock under the Company’s Amended and Restated 2001 Stock Incentive Plan, as amended, on September 9, 2016. Mr. Norrod’s options have a 10 year term and vest in 48 equal monthly installments, subject to his continuing to render services to the Company through the applicable vesting date. The exercise price of the options is $5.95 per share, adjusted for the subsequent one-for-five reverse stock split of the Company’s common stock effected on February 28, 2017.
Additionally, Mr. Norrod was granted a $1,000,000 cash bonus on completion of the Merger, which was paid in equal installments in October 2016 and January 2017.
Kirk Misaka
Under the employment agreement between Kirk Misaka and the Company, Mr. Misaka agreed to serve as Chief Financial Officer in exchange for an initial annual base salary of $292,000, representing a voluntary 20% salary reduction, which was automatically increased to $365,000 on April 1, 2017. Mr. Misaka was also eligible to participate in a performance-based annual bonus program, for which his target bonus was equal to $200,000. Mr. Misaka did not earn and was not paid a bonus in 2016. Mr. Misaka was also eligible to participate in all health benefits, insurance programs, pension and retirement plans and other employee benefit and compensation arrangements generally available to the Company’s other officers.
In accordance with the terms of his employment agreement, the Board of Directors granted Mr. Misaka a stock option award to purchase 100,000 shares of the Company’s common stock under the Company’s Amended and Restated 2001 Stock Incentive

Plan, as amended, on September 9, 2016. Mr. Misaka’s options have a 10 year term and vest in 48 equal monthly installments, subject to his continuing to render services to the Company through the applicable vesting date. The exercise price of the options is $5.95 per share, adjusted for the subsequent one-for-five reverse stock split of the Company’s common stock effected on February 28, 2017.
Additionally, Mr. Misaka was granted a $500,000 cash bonus on completion of the Merger, which was paid in March 2017.
(9) Stockholders’ Equity
(a) Overview
The Company’s equity capitalization consisted of 36.0 million authorized shares of common stock and 25 million shares of which 16.4 million were outstanding atpreferred stock, with a par value of $0.001. As of December 31, 2016.
(b) Stock-Based Compensation
Prior to September 9, 2016,2021, the dateCompany had 27.5 million shares of common stock issued and outstanding. As of December 31, 2021, the Merger, DNSCompany had reserved 3,565,234 shares of common stock for the issuance of options and restricted stock units granted under the Company’s 2017 Stock Incentive Plan and Non-Qualified Inducement Stock Option Grant, and for the issuance of shares under the Company's 2018 Employee Stock Purchase Plan. The Company did not have0t issue any stock-based compensation plans. The plan information described below represents stock-based compensation plans that were carried over from Legacy Zhone and were in effectshares of preferred stock as of December 31, 2016 and an additional stock-based compensation plan adopted by2021.

On January 26, 2021, the Company sold 4.6 million shares of common stock (including 0.6 million shares issued pursuant to the underwriters’ option to purchase additional shares) at a price of $14.00 per share in an underwritten public offering. The equity offering closed on January 2017. As of December 31, 2016,29, 2021 and resulted in gross proceeds to the Company had one significant stock-based compensation plan relatedof approximately $64.4 million and net proceeds to equity compensation (including equity compensationthe Company, after deducting underwriting discounts and commissions and offering expenses, of approximately $59.5 million.

Changes in Accumulated Other Comprehensive Income (Loss)

The table below summarizes the formchanges in accumulated other comprehensive income (loss) by component, net of stock options, restricted stock and restricted stock units) and employee stock purchases.tax (in thousands):

 

 

As of December 31,

 

 

 

2021

 

 

2020

 

Beginning accumulated other comprehensive loss

 

$

(2,124

)

 

$

(3,939

)

Actuarial income (loss) for pension plan

 

 

1,713

 

 

 

(981

)

Foreign currency translation adjustments, net

 

 

(4,046

)

 

 

2,796

 

Ending accumulated other comprehensive loss

 

$

(4,457

)

 

$

(2,124

)

The following table summarizes stock-based compensation expense for

During the year ended December 31, 2016 (in thousands):

 Year ended December 31,
 2016
Compensation expense relating to employee stock options, restricted stock units and restricted stock$336
2021, the Company recorded foreign currency translation loss, and 0 income taxes were allocated to the translation adjustments due to the full valuation allowance position. During the year ended December 31, 2020, the Company recorded foreign currency translation gain and allocated $0.7 million income taxes to the translation adjustments.   

Stock Incentive Plans

The Company’s stock-based compensation plans are designed to attract, motivate, retain and reward employees, directors and consultants and align stockholder and employee interests. As

The Company’s DASAN Zhone Solutions, Inc. 2017 Incentive Award Plan (“2017 Plan”) authorizes the issuance of December 31, 2016, the Company had one active stock incentive plan, the Amended and Restated 2001 Stock Incentive Plan ("2001 Plan"). The 2001 Plan provided for the grant of incentive stock options, non-statutory stock options, restricted stock, unitrestricted stock units, dividend equivalents, stock payment awards, restricted stock appreciation rights, performance bonus awards and other stock-basedincentive awards. The 2017 Plan authorizes the grant of awards to officers, employees, non-employee directors and consultants of the Company.Company and its subsidiaries. Under the 20012017 Plan, stock options were permitted tomay be granted at an exercise price less than, equal to or greater than the fair market value on the date of grant, except that any stock options granted to a 10% stockholder must have an exercise price equal to at least 110% of the fair market value of the Company’s common stock on the date of grant. The Board of Directors determineddetermine the term of each stock option, the option exercise price and the vesting terms. Stock options wereare generally granted at an exercise price equal to the fair market value on the date of grant, expiring seven to ten years from the date of grant and vesting over a period of four years. On January 1 of each year, if the number of shares available for grant under the 2001 Plan was less than 5% of the total number of shares of common stock outstanding as of that date, the shares available for grant under the plan were automatically increased by the amount necessary to make the total number of shares available for grant equal to 5% of the total number of shares of common stock outstanding, or by a lesser amount as determined by the Board of Directors.

As of December 31, 2016, 6,259 shares were available for grant under the 2001 Plan. The 2001 Plan expired in March 2017.
On January 4, 2017, the Board of Directors of the Company approved the DASAN Zhone Solutions, Inc. 2017 Incentive Award Plan (the "2017 Plan"), subject to stockholder approval at the Company’s 2017 annual meeting of stockholders. The 2017 Plan authorizes the issuance of stock options, restricted stock, restricted stock units, dividend equivalents, stock payment awards, stock appreciation rights, performance bonus awards and other incentive awards. The 2017 Plan also authorizes the Compensation Committee of the Board to grant performance awards payable in the form of shares of the Company’s common stock or cash, including equity awards and incentive cash bonuses that may qualify as “performance-based compensation” under Section 162(m) of the Internal Revenue Code of 1986, as amended (the "Code"). The 2017 Plan authorizes the grant of awards to employees, non-employee directors and consultants of the Company and its subsidiaries.

The maximum number of shares of the Company’s common stock for which grants may be madegranted under the 2017 Plan is the sum of (i) 600,0001,174,359 shares, plus (ii) any shares subject to awards granted under the Amended and Restated 2001 Stock Incentive Planprior plan to the extent such shares become available for issuance under the 2017 Plan pursuant to its terms, plus (iii) any shares subject to an annual increase on each January 1 during the 10 year term of the 2017 Plan equal to the lesser of (x) 4% of the total


shares of the Company’s common stock outstanding (on an as-converted basis) and (y) such smaller amount as may be determined by the Board of Directors in its sole discretion. The annual increase on January 1, 2021 was 878,315 shares. In addition, the following annual limitations apply: (i) the maximum aggregate number of shares of the Company’s common stock that may be subject to awards granted to any one participant during a calendar year is 4,000,000 sharesshares; and (ii) the maximum aggregate amount of cash that may be paid to any one participant during any calendar year with respect to awards initially payable in cash is $10 million. The number of shares of the Company’s common stock that may be issued or transferred pursuant to awards granted under the 2017 Plan shall not exceed an aggregate of 7,000,000.8,000,000 shares.


On January 4, 2017,

In 2020, the Compensation Committee of the Company’s Board of Directors andapproved the Compensation Committee granted an award of 100,000 optionsgrant to purchase common stock ofCharles Daniel Vogt, the Company under the 2017 Plan, subject to stockholder approval of the 2017 Plan, to Il Yung Kim, theCompany’s Chief Executive Officer, of the Company. Thenonqualified stock options have a ten-year term and an exercise price of $4.82 per share, adjusted for the subsequent one-for-five reverse stock splitto purchase 518,518 shares of the Company’s common stock effectedat an exercise price of $10.11 per share, which equaled the closing price of the Company’s common stock on February 28, 2017. Provided that Mr. Kim continues to render servicesAugust 1, 2020, the effective date of grant. The vesting commencement date is the grant date of options. The shares subject to the Company through the applicable vesting date, the optionsoption shall vest as to 25% of the shares on the firstthird anniversary of the vesting commencement date, subject to Mr. Vogt's continuous service as an employee, director or consultant through such vesting date. The grant was a part of the Inducement Option Agreements with Mr. Vogt and was not covered by 2017 Plan.

Stock Options

Options issued under the Company’s stock incentive plans are exercisable for periods not to exceed ten years, and vest and contain such other terms and conditions as specified in the applicable award document. Options to the remaining shares in 36 equal monthly installments thereafter. Between January 4, 2017 and September 15, 2017, the Company’s Board of Directors (or its designee) granted to 55 other employees an aggregate of 262,999buy common stock optionsare issued under the 2017 Plan, subjectwith exercise prices equal to obtaining stockholder approvalthe closing price of shares of the 2017 Plan, with a weighted average exercise priceCompany’s common on the date of $4.75. award.   

The following table sets forth the summary of option activity under the stock options granted tooption program for the year ended December 31, 2021 (in thousands, except per share data):

 

 

Options

Outstanding

 

 

Weighted

Average

Exercise

Price

 

 

Weighted

Average

Remaining

Contractual

Term

 

 

Aggregate

Intrinsic

Value

 

Outstanding at beginning of period

 

 

2,442

 

 

$

9.02

 

 

 

5.69

 

 

$

15,761

 

Granted

 

 

846

 

 

 

17.90

 

 

 

 

 

 

 

 

 

Exercised

 

 

(713

)

 

 

7.68

 

 

 

 

 

 

 

 

 

Canceled/Forfeited

 

 

(477

)

 

 

10.69

 

 

 

 

 

 

 

 

 

Expired

 

 

(110

)

 

 

10.20

 

 

 

 

 

 

 

 

 

Outstanding at end of period

 

 

1,988

 

 

 

12.81

 

 

 

8.42

 

 

 

8,259

 

Vested and expected to vest at end of period

 

 

1,988

 

 

 

12.81

 

 

 

8.42

 

 

 

8,259

 

Vested and exercisable at end of period

 

 

505

 

 

$

9.05

 

 

 

6.92

 

 

$

3,624

 

The aggregate intrinsic value represents the total pretax intrinsic value, based on the Company’s employees will vestclosing stock price as to 25% of the shares on the first anniversaryDecember 31, 2021 of the grant date and as to the remaining shares in 36 equal monthly installments thereafter. If the 2017 Plan is not approved$16.22 per share which would have been received by the Company’s stockholders atoption holders had the 2017 annual meeting,option holders exercised their options as of that date. The aggregate intrinsic value of awards exercised during the foregoing stock option awards will be automatically canceledyears ended December 31, 2021 and become null2020 were $6.2 million and void. The Company may grant further awards to employees, including executive officers, and consultants under the 2017 Plan prior to the annual meeting in the ordinary course of business, which awards will also be contingent options that are subject to stockholder approval of the 2017 Plan.

$1.9 million, respectively.

The Company has estimated the fair value of stock-based payment awardsstock options on the date of grant using the Black Scholes pricing model, which is affected by the Company’s stock price as well as assumptions regarding a number of complex and subjective variables. These variables include the Company’s expected stock price volatility over the term of the awards, actual and projected employee option exercise behaviors, risk-free interest rate and expected dividends. The estimated expected term of options granted was determined based on SAB 107 simplified method because the Company does not have adequate historical option exercises.data for newly issued stock options. Estimated volatility was based on the historical volatility of the Company and the risk freerisk-free interest rate was based on the U.S. Treasury yield in effect at the time of grant for the expected life of the options. The Company does not anticipate paying any cash dividends in the foreseeable future, and therefore used an expected dividend yield of zero in the option valuation model. Forfeitures are recognized as they occur.

The Company is also required to estimate forfeitures at the time of grant and revise those estimates in subsequent periods if actual forfeitures differ from those estimates. Historical data was used to estimate pre-vesting forfeitures and record stock-based compensation expense only for those awards that are expected to vest.

Theweighted average assumptions used to value option grants for the year ended December 31, 2016 is2021 and 2020 are as follows:

 

 

Years ended December 31,

 

 

 

2021

 

 

2020

 

Expected term (years)

 

 

6.0

 

 

 

6.2

 

Volatility

 

 

59.5

%

 

 

60.5

%

Risk free interest rate

 

 

1.1

%

 

 

0.4

%

Dividend yield

 

 

0

%

 

 

0

%

Fair value of underlying stock options

 

$

9.84

 

 

$

5.40

 

Year ended December 31,
2016
Expected term (years)4.01 - 6.17
Expected volatility79.9% - 81.5%
Risk free interest rate1.14%
The weighted average grant date fair value of options granted during

For the yearyears ended December 31, 2016 was $4.08. There were no exercises2021 and 2020, the Company recorded compensation expense related to stock options of options during the year ended$3.7 million and $3.2 million, respectively. As of December 31, 2016.

2021, there was $9.3 million of unrecognized compensation costs which are recognized over a weighted average period of 2.7 years.


Restricted Stock Units

The following table sets forth the summary of optionrestricted stock units activity under the stock option program for the year ended December 31, 20162021 (in thousands, except per share data):

 

 

RSU

Outstanding

 

 

Weighted

Average

Grant Date Fair

Value

 

Outstanding at beginning of period

 

 

416

 

 

$

10.65

 

Granted

 

 

1,243

 

 

 

17.74

 

Cancelled/Forfeited

 

 

(206

)

 

 

14.67

 

Vested and issued

 

 

(143

)

 

 

11.63

 

Outstanding at end of period

 

 

1,310

 

 

 

16.65

 

Vested and unissued at end of period

 

7

 

 

 

11.76

 

Non-vested at end of period

 

 

1,303

 

 

$

16.67

 

 
Options
Outstanding (1)
 
Weighted 
Average
Exercise 
Price (1)
 
Weighted 
Average
Remaining
Contractual 
Term
 
Aggregate
Intrinsic
Value
Outstanding as of December 31, 2015
 $
 
 

Options assumed as part of the Merger265
 $8.68
    
Granted530
 $5.95
    
Canceled/Forfeited(8) $11.75
    
Exercised
 $
    
Outstanding as of December 31, 2016787
 $6.84
 8.56 $60
Vested and expected to vest at December 31, 2016684
 $7.01
 8.39 $52
Vested and exercisable at December 31, 2016233
 $8.34
 5.85 $14
(1) Amount presented has been adjusted to reflect the one-for-five reverse

The fair value of restricted stock split effected on February 28, 2017.

The aggregate intrinsic value represents the total pretax intrinsic value,units is determined based on the Company’s closingCompany's stock price ason the date of grant. Total grant-date fair value of awards granted during the years ended December 31, 20162021 and 2020 was $22.2 million and $4.9 million, respectively. Total fair value of $4.90, which would have been received byawards vested during the option holders hadyears ended December 31, 2021 and 2020 was $3.1 million and $0.5 million, respectively.

For the option holders exercised their options asyears ended December 31, 2021 and 2020, the Company recorded compensation expense related to restricted stock units of that date.

$4.6 million and $1.1 million, respectively. As of December 31, 2016,2021, there was $2.1$18.4 million of unrecognized compensation costs adjusted for estimated forfeitures which are expected to be recognized over a weighted average period of 2.33.1 years.

2018 Employee Stock Purchase Plan

On May 22, 2018, the stockholders of the Company approved the adoption of the DASAN Zhone Solutions, Inc. 2018 Employee Stock Purchase Plan (the “ESPP”). The ESPP replaced the DASAN Zhone Solutions, Inc. 2002 Employee Stock Purchase Plan.

The ESPP authorizes the issuance of up to 250,000 shares of the Company’s common stock. In addition, the ESPP provides for an annual increase on the first day of each calendar year beginning on January 1, 2019, and ending on and including January 1, 2028, equal to the lesser of (i) 1% of the shares outstanding on the last day of the immediately preceding calendar year and (ii) such smaller number of shares as may be determined by the Board of Directors in its sole discretion. Notwithstanding the foregoing, the number of shares of stock that may be issued or transferred pursuant to awards under the ESPP may not exceed an aggregate of 2,000,000 shares. These 2,000,000 shares have been registered pursuant to a registration statement on Form S-8 filed with the SEC on November 8, 2018. The purchase price of the shares will be 85% of the lower of the fair market value of our common stock on (a) the first trading day of the offering period or (b) the final trading day of the offering period, which would be the applicable purchase date.

The weighted average assumptions used to value the ESPP shares for the year ended December 31, 2021 included an expected term of 0.5 years, volatility of 53.7% and a risk free interest rate of 0.3%. The Company recorded $0.7 million and $0.3 million of expense related to the ESPP for the year ended December 31, 2021 and 2020, respectively.

Stock-based Compensation

The following table summarizes total stock-based compensation expense for stock options, restricted stock units, and ESPP.

 

 

Years ended December 31,

 

 

 

2021

 

 

2020

 

Cost of revenue

 

$

276

 

 

$

86

 

Research and product development

 

 

1,074

 

 

 

395

 

Selling, marketing, general and administrative

 

 

7,640

 

 

 

4,132

 

 

 

$

8,990

 

 

$

4,613

 


(10) Net Income (Loss) Per Share

The following table sets forth the computation of basic and diluted net income (loss) per share (in thousands, except per share data):

 

 

Years ended December 31,

 

 

 

2021

 

 

2020

 

Net income (loss)

 

$

(34,683

)

 

$

(23,082

)

Weighted average number of shares outstanding:

 

 

 

 

 

 

 

 

Basic

 

 

26,692

 

 

 

21,588

 

Effect of dilutive securities:

 

 

 

 

 

 

 

 

Stock options, restricted stock units and share awards

 

 

 

 

 

 

Diluted

 

 

26,692

 

 

 

21,588

 

Net income (loss) per share:

 

 

 

 

 

 

 

 

Basic

 

$

(1.30

)

 

$

(1.07

)

Diluted

 

$

(1.30

)

 

$

(1.07

)

 Years ended December 31,
 2016 2015 2014
   (As restated)  
Numerator:     
Net income (loss) attributable to DASAN Zhone Solutions, Inc.$(15,326) $(3,339) $1,837
Denominator:     
Weighted average number of shares outstanding:     
Basic (1)
11,637
 9,314
 9,199
Effect of dilutive securities:     
Stock options, restricted stock units and share awards
 
 
Diluted (1)
11,637
 9,314
 9,199
Net income (loss) per share attributable to DASAN Zhone Solutions Inc.:     
Basic (1)
$(1.32) $(0.36) $0.20
Diluted (1)
$(1.32) $(0.36) $0.20
(1) Amount presented has been adjusted to reflect the one-for-five reverse stock split effected on February 28, 2017.

The following tables set forth potential common stock that is not included in the diluted net income (loss) per share calculation above because their effect would be anti-dilutive for the periods indicated (in thousands, except exercise price per share data)thousands):

 

 

Years ended December 31,

 

 

 

2021

 

 

2020

 

Outstanding stock options

 

 

448

 

 

 

277

 

Unvested restricted stock units

 

 

269

 

 

 

20

 

 2016 
Weighted average
option exercise price
Outstanding stock options, restricted stock units and unvested restricted shares796
 $6.84

As of December 31, 2016, 20152021 and 2014, no2020, 0 shares of issued common stock were subject to repurchase.

(11) Income Taxes

The geographical breakdown of income (loss) before income taxes is as follows (in thousands):

 

 

Years ended December 31,

 

 

 

2021

 

 

2020

 

Loss before income taxes - Domestic

 

$

(6,031

)

 

$

(19,276

)

Loss before income taxes - Foreign

 

 

(25,439

)

 

 

(305

)

Loss before income taxes

 

$

(31,470

)

 

$

(19,581

)

The following is a summary of the components of income tax expense applicable to lossincome (loss) before income taxes (in thousands):

 

 

Years ended December 31,

 

 

 

2021

 

 

2020

 

Current:

 

 

 

 

 

 

 

 

Federal

 

$

-

 

 

$

-

 

State

 

 

29

 

 

 

28

 

Foreign

 

 

1,779

 

 

 

3,256

 

Total current tax provision

 

$

1,808

 

 

$

3,284

 

Deferred:

 

 

 

 

 

 

 

 

Federal

 

$

-

 

 

$

-

 

State

 

 

-

 

 

 

-

 

Foreign

 

 

1,405

 

 

 

217

 

Total deferred tax provision (benefit)

 

$

1,405

 

 

$

217

 

Total tax provision (benefit)

 

$

3,213

 

 

$

3,501

 


 Years ended December 31,
 2016 2015 2014
Current:     
Federal$
 $
 $
State(9) 
 
Foreign88
 318
 1,812
Total current tax expense$79
 $318

$1,812
Deferred:     
Federal$
 $
 $
State
 
 
Foreign1,408
 (86) (432)
Total deferred tax expense$1,408
 $(86) $(432)
Total tax expense$1,487
 $232
 $1,380

A reconciliation of the expected tax expenseprovision (benefit) to the actual tax expenseprovision (benefit) is as follows (in thousands):

 

 

Years ended December 31,

 

 

 

2021

 

 

2020

 

Expected tax provision (benefit) at statutory rate

 

$

(6,609

)

 

$

(4,112

)

State taxes, net of Federal effect

 

 

23

 

 

 

22

 

State change in deferred taxes

 

 

304

 

 

 

(325

)

Foreign taxes

 

 

166

 

 

 

3,472

 

Foreign rate differential

 

 

(1,946

)

 

 

(65

)

Valuation allowance

 

 

11,341

 

 

 

2,550

 

Change in reserves

 

 

2,696

 

 

 

-

 

Permanent differences

 

 

(2,150)

 

 

 

1,950

 

Tax credit carry-forwards

 

 

(1,102

)

 

 

(202

)

Miscellaneous

 

 

490

 

 

 

211

 

Total tax provision

 

$

3,213

 

 

$

3,501

 

 Years ended December 31,
 2016 2015 2014
Expected tax expense (benefit) at statutory rate (e.g. 34%)$(4,644) $(929) $1,094
State taxes, net of Federal effect(348) 
 
Foreign rate differential391
 328
 (386)
Valuation allowance7,004
 218
 260
Permanent differences687
 40
 237
Tax credit carry-forwards(896) (674) 
Tax on accumulated earnings from prior year29
 1,348
 
Tax paid to overseas71
 
 
Tax expense adjustments after tax return for prior(837) 
 
Foreign currency translation124
 
 
Other(94) (99) 175
Total tax expense$1,487
 $232
 $1,380

Deferred income taxes reflect the net tax effects of temporary differences between the carrying amounts of assets and liabilities for financial reporting and income tax purposes. Significant components of the Company’s deferred tax assets and liabilities as of December 31, 20162021 and 20152020 are as follows (in thousands):

 

 

As of December 31,

 

 

 

2021

 

 

2020

 

Deferred tax assets:

 

 

 

 

 

 

 

 

Net operating loss, capital loss, and tax credit carryforwards

 

$

26,512

 

 

$

24,071

 

Fixed assets and intangible assets

 

 

4,043

 

 

 

2,689

 

Inventory and other reserves

 

 

4,863

 

 

 

1,554

 

Operating lease liability

 

 

3,958

 

 

 

1,725

 

Other (mainly accrued expenses)

 

 

10,410

 

 

 

4,792

 

Gross deferred tax assets

 

 

49,786

 

 

 

34,831

 

Less valuation allowance

 

 

(46,027

)

 

 

(31,994

)

Deferred tax liabilities:

 

 

 

 

 

 

 

 

      Fixed assets and intangible assets

 

 

(856

)

 

 

-

 

Operating lease right-of-use-asset

 

 

(2,903

)

 

 

(1,432

)

Gross deferred tax liabilities

 

 

(3,759

)

 

 

(1,432

)

Total net deferred tax assets

 

$

-

 

 

$

1,405

 


 2016 2015
Deferred tax assets:   
Net operating loss, capital loss, and tax credit carryforwards$14,243
 $1,907
Reduction of gross deferred tax assets due to built-in loss limitation(4,402) 
Fixed assets and intangible assets3,775
 217
Inventory and other reserves4,573
 513
Other2,661
 197
Gross deferred tax assets20,850
 2,834
Less valuation allowance(20,850) (1,449)
Total net deferred tax assets$
 $1,385

For the years ended December 31, 20162021 and 2015,2020, the net changes in the valuation allowance were an increase of $19.4$14.0 million, and $0.2an increase of $5.2 million, respectively. The Company recorded a full valuation allowance againstincrease during the current year is primarily due to the increase of U.S. net deferred tax assets at December 31, 2016and increase of the valuation allowance on certain foreign deferred tax assets, including $5.6 million of deferred tax assets obtained in the acquisition of Optelian. The Company maintains a valuation allowance on its global net deferred tax assets since it is more likely than not that the net deferred tax assets will not be realized due toin the lack of previously paid taxes and anticipated taxable income.

foreseeable future.

As of December 31, 2016,2021, the Company had net operating loss carryforwards for federal state, and foreignstate income tax purposes of approximately $29.0 million, $43.9$43.4 million and $2.1$28.8 million, respectively. The federal losses begin to expire in 2025.various years beginning in 2030. The state losses begin to expire in 2017.various years beginning in 2022. The foreignfederal net operating loss carryforward includes $17.9 million that has an indefinite carryforward period. As of December 31, 2021, the Company had federal and state net operating losses for German tax purposes of approximately $25.3 million and $25.2 million respectively, which do not expire and are carried forward indefinitely, and net operating losses from Canada of approximately $6.3 million which may be carried forward for 20 years and begin to expire in 2026.

As of December 31, 2016, the Company had research credit carryforwards of approximately $0.1 million, $0.1 million, and $1.2 million for federal, state, and foreign income tax purposes, respectively. If not utilized, the federal carryforward will expire in various amounts beginning in 2036. The state credit can be carried forward indefinitely. If not utilized, the foreign credit carryforward will expire in 2021.
As of December 31, 2016, the Company also had alternative minimum tax credit carryforward for federal income tax purposes of approximately $0.1 million which are available to reduce future income taxes, if any over an indefinite period.
2039.

Pursuant to Sections 382 and 383 of the Internal Revenue Code, or IRC, annual use of the Company's net operating losses and tax credit carryforwards may be limited in the event a cumulative change in ownership of more than 50% occurs within a three-year-period.three-year period. The Company had an ownership change in September 2016, which has resulted in an annual limitation on the amount of net operating lossesloss and tax credit carryforwardscarry forward which arose prior to that date that the Company can utilize.

utilize in a future year. In accordance with ASC 740addition, some of the pre-acquisition NOLs were written off in a prior year due to the limitation.

As of December 31, 2021, the Company had research credit carryforwards of approximately $2.0 million and $2.0 million for federal and state purposes, respectively, as well as Canadian research and investment credits of approximately $3.3 million and $2.2 million, respectively. If not utilized, the federal carryforwards will expire beginning in 2036. The California credit carryforwards do not expire, the Georgia credit carryforwards will expire beginning in 2026, and the Texas credit carryforwards will expire beginning in 2040. The Canadian research and investment credits begin to expire in 2031 and 2031 respectively.


The Company does not intend to distribute the earnings from its foreign subsidiaries and has not recorded any deferred tax liability related to such amounts. The Company considers the remaining excess of the amount for financial reporting over the tax basis of our investments in our foreign subsidiaries to be indefinitely reinvested and the determination of any deferred tax liability on this amount is requirenot practicable.

The Company is required to inventory, evaluate, and measure all uncertain tax positions taken or to be taken on tax returns, and to record liabilities for the amount of such positions that may not be sustained, or may only be partially sustained, upon examination by the relevant taxing authorities. AtAfter reviewing the documentation maintained in support of uncertain tax positions taken in prior years the Company concluded that it will be unlikely to sustain those positions should they be audited by the relevant tax authorities. Accordingly, the Company increased the reserve for those positions by approximately $2.3 million in the current year. As of December 31, 2016,2021, the Company had gross unrecognized tax benefits of $0.1$4.2 million, noneNaN of which if recognized, would reduce the effective tax rate in a future period, due to the Company's full valuation allowance.

allowance on U.S. net deferred tax assets.

A reconciliation of the beginning and ending unrecognized tax benefit amounts for 20162021 and 20152020 are as follows (in thousands):

 

 

As of December 31,

 

 

 

2021

 

 

2020

 

Balance at beginning of period

 

$

1,255

 

 

$

1,036

 

Increases related to prior year’s tax positions

 

 

2,252

 

 

 

-

 

Increases related to current year tax positions

 

 

681

 

 

 

219

 

Balance at end of period

 

$

4,188

 

 

$

1,255

 


Balance at December 31, 2014$
Increases related to prior year tax positions
Decreases related to prior year tax positions
Increases related to current year tax positions
Settlements
Lapse of statute of limitations
Balance at December 31, 2015
Increases related to prior year tax positions
Decreases related to prior year tax positions
Increases related to current year tax positions77
Settlements
Lapse of statute of limitations
Balance at December 31, 2016$77

It is the Company's policy to account for interest and penalties related to uncertain tax positions as interest expense and general administrative expense, respectively in its statementthe consolidated statements of operations. comprehensive income (loss).

The Company did not0t record any interest andor penalty (benefit) expenseprovision during the yearyears ended December 31, 20162021 and 2015.

2020.

The Company or one of its subsidiaries files income tax returns in the U.S. federal jurisdiction, and various state and foreign jurisdictions. The open tax years for the major jurisdictions are as follows:

Federal

2018 - 2021

California

2017 - 2021

•    Federal

Canada

2013

2017 - 20162021

•    California and Canada

Brazil

2012

2017 - 20162021

•    Brazil

Germany

2016 - 2021

Japan

2016 - 2021

Korea

2016 - 2021

United Kingdom

2017 - 2021

Vietnam

2011 - 2016

•    Germany2012 - 2016
•    Japan2011 - 2016
•    Korea2015 - 2016
•    United Kingdom2014 - 2016
•    Vietnam20162021

However, due to the fact the Company had net operating losses and credits carried forward in most jurisdictions, certain items attributable to technically closed years are still subject to adjustment by the relevant taxing authority through an adjustment to tax attributes carried forward to open years.

The Company estimates that its foreign income will generally be subject to taxation in the United States on a current basis and that its foreign subsidiaries and representative offices will therefore not have any material untaxed earnings subject to deferred taxes. In addition, to the extent the Company is deemed to have sufficient connection to a particular taxing jurisdiction to enable that jurisdiction to tax the Company but the Company has not filed an income tax return in that jurisdiction for the year(s) at issue, the jurisdiction would typically be able to assert a tax liability for such years without limitation on the number of years it may examine.
The Company is not currently under examination for income taxes in any material jurisdiction.

(12) Non-Controlling Interests

Non-controlling interests were as follows (in thousands)
  Years Ended December 31,
  2016 2015
Beginning non-controlling interests $138
 $
Acquisition of additional interest in a subsidiary 277
 
Net loss attributable to non-controlling interests (2) 
Foreign currency translation adjustments (OCI) 3
 
Acquisition of controlling interest 
 138
Ending non-controlling interests $416
 $138
(13) Related Party Transactions

Related Party Debt

In connection with the Merger, on September 9, 2016, the Company entered into a loan agreement with DNI for a $5.0 million unsecured subordinated term loan facility. Under the loan agreement, the Company was permitted to request drawdowns of one or more term loans in an aggregate principal amount not to exceed $5.0 million.

As of December 31, 2016, $5.0 million in term loans was outstanding under the facility. Such term loans mature in September 2021, and are pre-payable at any time by the Company without premium or penalty. The interest rate had 0 outstanding borrowings from related parties compared to $29.8 million as of December 31, 2016 under this facility was 4.6% per annum.

In addition,2020. See Note 8 Debt for further information about the Company borrowed $1.8 million from DNI for capital investment in February 2016, which amount was outstandingCompany’s related party debt. 

The following table sets forth payment guarantees of certain of the Company's performance obligations as of December 31, 2016. This loan matured in March 2017 with an option2021 that have been provided by DNI. DNI owns approximately 36.7% of renewalthe outstanding shares of the Company's common stock. The amount guaranteed exceeds the principal amounts of outstanding obligations due to collateral requirements by mutual agreement, and bore interest at a rate of 6.9% per annum, payable annually. Effective February 27, 2017, the Company amended the terms of this loan to extend the repayment date from March 2017 to March 2018, and to reduce the interest rate from 6.9% to 4.6% per annum.banks.


On June 23, 2017, the Company borrowed $3.5 million from Solueta, an affiliate of DNI, which amount was outstanding as of June 30, 2017. This loan matures in November 2017 and bears interest at a rate of 4.6% per annum, payable monthly.

Guarantor

 

Amount Guaranteed

(in thousands)

 

 

Description of Obligations Guaranteed

Dasan Networks, Inc.

 

 

6,056

 

 

Payment guarantee to Industrial Bank of Korea

Dasan Networks, Inc.

 

 

1,615

 

 

Payment guarantee to Shinhan Bank

 

 

$

7,671

 

 

 

Other Related Party Transactions

Sales, and Purchases to and from Related Parties

Sales and purchases, cost of revenue, research and product development, selling, marketing, general and administrative, interest expense and other income and expenses to and from relatedrelate parties were as follows (in thousands) for the years ended December, 31, 2016, 20152021 and 2014 were as follows (in thousands):2020:

 

 

For the year ended December 31, 2021

 

Counterparty

 

Sales

 

 

Cost of

revenue

 

 

Research

and product

development

 

 

Selling,

marketing,

general and

administrative

 

 

Interest

expense

 

 

Other

expenses

 

Dasan Networks, Inc.

 

$

2,103

 

 

$

1,940

 

 

$

1,019

 

 

$

1,620

 

 

$

132

 

 

$

197

 

Dasan Invest Co., Ltd.*

 

 

 

 

 

30

 

 

 

134

 

 

 

57

 

 

 

 

 

 

 

 

 

$

2,103

 

 

$

1,970

 

 

$

1,153

 

 

$

1,677

 

 

$

132

 

 

$

197

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

For the year ended December 31, 2020

 

Counterparty

 

Sales

 

 

Cost of

revenue

 

 

Research

and product

development

 

 

Selling,

marketing,

general and

administrative

 

 

Interest

expense

 

 

Other

expenses

 

Dasan Networks, Inc.

 

$

4,362

 

 

$

3,843

 

 

$

953

 

 

$

1,579

 

 

$

1,047

 

 

$

355

 

Dasan Invest Co., Ltd.*

 

 

 

 

 

22

 

 

 

100

 

 

 

42

 

 

 

 

 

 

 

 

 

$

4,362

 

 

$

3,865

 

 

$

1,053

 

 

$

1,621

 

 

$

1,047

 

 

$

355

 


    For the year ended December 31, 2016
Counterparty DNI Ownership Interest Sales Cost of revenue Manufacturing (Cost of revenue) Research and product development Selling, marketing, general and administrative Other income Other expenses
DNI (Parent Company) N/A $21,214
 $18,173
 $
 $
 $5,079
 $
 $389
ABLE 61.99% 50
 
 
 
 
 
 
CHASAN Networks Co., Ltd. 100% 
 
 720
 149
 
 
 
DASAN France 100% 19
 18
 
 
 
   
DASAN INDIA Private Limited 100% 2,710
 2,080
 
 
 
 
 
DMC 100% 1
 1
 
 
 
 
 
D-Mobile 100% 4,431
 3,610
 
 
 421
 
 
DTS 81.56% 
 
 
 
 
 1
 
HANDYSOFT, Inc. 17.64% 155
 136
 
 
 
 
 
J-Mobile Corporation 68.56% 54
 
 
 
 634
 25
 
PANDA Media, Inc. 90% 
 
 
 
 2
 
 1
Tomato Soft (Xi'an) Ltd. 100% 
 
 
 750
 
 
 
    $28,634
 $24,018
 $720
 $899
 $6,136
 $26
 $390
    For the year ended December 31, 2015
Counterparty DNI Ownership Interest Sales (1) (2) Cost of revenue (2) Manufacturing (Cost of revenue) Research and product development Selling, marketing, general and administrative (1) Other income Other expenses
    As Restated As Restated     As Restated    
DNI (Parent Company) N/A $23,365
 $19,822
 $
 $
 $7,230
 $24
 $363
CHASAN Networks Co., Ltd. 100% 
 
 731
 358
 
 
 
DASAN RND Co., LTD 100% 
 
 
 
 605
 
 
D-Mobile 100% 
 
 
 
 91
 
 
HANDYSOFT, Inc. 17.64% 1,410
 1,337
 
 
 
 
 184
J-Mobile Corporation 68.56% 
 
 
 
 1,511
 15
 
Tomato Soft (Xi'an) Ltd. 100% 
 
 
 631
 
 
 
    $24,775
 $21,159
 $731
 $989
 $9,437
 $39
 $547
    For the year ended December 31, 2014
Counterparty DNI Ownership Interest Sales (1) (2) Cost of revenue (2) Manufacturing (Cost of revenue) Research and product development Selling, marketing, general and administrative (1) Other income Other expenses
    As Restated As Restated     As Restated    
DNI (Parent Company) N/A $30,760
 $27,353
 $
 $
 $7,098
 $
 $
CHASAN Networks Co., Ltd. 100% 
 
 838
 471
 
 
 
DASAN RND Co., LTD 100% 
 
 
 
 1,214
 
 
J-Mobile Corporation 68.56% 
 
 
 
 766
 
 
Tomato Soft (Xi'an) Ltd. 100% 
 
 
 575
 
 
 
    $30,760
 $27,353
 $838
 $1,046
 $9,078
 $
 $
(1) As discussed in Note 1(d)

* Dasan Invest Co., the Company corrected errors in the classificationLtd. indirectly holds 3.1% of certain brand royalty fee of $0.4 million and $0.5 million which should have been treated as a reduction of revenue for the years ended December 31, 2015 and December 31, 2014.


(2) The Company corrected errors in the classification of certain revenues of $13.0 million and $16.0 million and related party cost of revenue of $11.1 million and $14.2 million relating to DNI (Parent Company) which should have been classified as related party revenue and related party cost of revenue for the years ended December 31, 2015 and 2014.
Further, an error in the classification of certain revenues of $4.8 million, $4.5 million, and $0.2 million which should have been classified as related party revenue for the quarters ended March 31, 2016, June 30, 2016, and September 30, 2016 was corrected in the annual results included above for the fiscal year ended December 31, 2016.  The Company concluded that the error is not material for the periods impacted but will revise the previously issued consolidated financial statements for this error in future quarterly filings. 
DNI’s shares.

The Company has entered into certain sales agreements with DNI andto sell certain of its subsidiaries. Salesservices and cost of revenue to DNI, DASAN France, DASAN INDIA Private Limited, and D-Mobile represent finished goods produced by the Company that are sold to these related parties who sell the Company's products in Korea, France, India and Taiwan, respectively.

Company. The Company also has entered into an agreement with CHASAN Networks Co., Ltd. to provide manufacturing and research and development services for the Company. Under the agreement with CHASAN Networks., Ltd., the Company is charged a cost plus 7% fee for the manufacturing and development of certain deliverables.
The Company has entered into an agreement with Tomato Soft (Xi'an) Ltd. to provide research and development services for the Company. Under the agreement with Tomato Soft (Xi'an) Ltd., the Company is charged an expected annual fee of $0.8 million for the development of certain deliverables.
Prior to the Merger, as DNS was then a wholly owned subsidiary of DNI, DNI had sales agreements with certain customers on DNS' behalf. Since the Merger, due to these prior sales agreements, the Company has entered into an agreement with DNI in which DNI acts as a sales channel to thesethird party customers. The above transactions are included in sales and cost of revenue on the consolidated statements of comprehensive income (loss). Sales to DNI necessary for DNI to fulfill agreements with its customers are recorded net of royalty fees in related party revenue.
Thefor a sales channel arrangement.

DNS California, a subsidiary of the Company, shares office space with DNI and certain of DNI's subsidiaries. Prior to the Merger, DNS, then a wholly owned subsidiary of DNI, shared human resources, treasury and other administrative support with DNI. As such, the Company entered into certain service sharing agreements with DNI and certain of its subsidiaries for the shared office space and shared administrative services. Expenses

DNS Korea, a subsidiary of the Company, has two separate lease agreements with DNI related to rentthe lease of office space and warehouse facilities. Operating lease cost related to these leases totaled $1.8 million and $1.7 million for the years ended December 31, 2021 and 2020, respectively. Operating lease expense is allocated between cost of revenue, research and product development, and selling, marketing, general and administrative expenses on the consolidated statements of comprehensive income (loss). As of December 31, 2021, the right-of-use asset and operating lease liability related to these leases were $6.4 million. As of December 31, 2020, the right-of-use asset and operating lease liability related to these leases were $8.6 million. Deposits for these leases are included in other assets on the consolidated balance sheets as of December 31, 2021 and 2020.

The Company had an agreement with Dasan Invest Co., Ltd. to provide IT services arefor the Company. The agreement was terminated in the fourth quarter of 2021. The respective expense was allocated tobetween cost of revenue, research and product development, and selling, marketing, general and administrative expenses on the Company based on square footage occupied and headcount, respectively.

Otherconsolidated statements of comprehensive income from J-Mobile Corporation(loss). Interest expense represents interest income earned on a loan receivable from J-Mobile Corporation. The loan receivable was issuedpaid to DNI for the amount of $0.5 million and earned an interest rate of 6.9% per annum. The loan receivable was scheduledrelated party debt. Refer to mature on July 1, 2020, but was fully paid off on September 3, 2016.Note 8 Debt for further information.


Other expenses to related parties represent expenses to DNI for its payment guarantees relating to the Company's borrowings.performance obligations. The Company pays DNI a guarantee fee which is calculated as 0.9% of the guaranteed amount.


Refer to the table above for further information about obligations guaranteed by DNI.         

Balances of Receivables and Payables with Related Parties

Balances of receivables and payables arising from sales and purchases of goods and services with related parties as of December 31, 20162021 and 20152020 were as follows (in thousands):

 

 

As of December 31, 2021

 

Counterparty

 

Account

receivables

 

 

Other

receivables

 

 

Other assets

 

 

Loans Payable

 

 

Accounts

payable

 

Dasan Networks, Inc.

 

$

181

 

 

$

215

 

 

$

691

 

 

$

 

 

$

785

 

Dasan Invest Co., Ltd.*

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

$

181

 

 

$

215

 

 

$

691

 

 

$

 

 

$

785

 

 

 

As of December 31, 2020

 

Counterparty

 

Account

receivables

 

 

Other

receivables

 

 

Other assets

 

 

Loans

Payable

 

 

Accounts

payable

 

Dasan Networks, Inc.

 

$

2,278

 

 

$

247

 

 

$

755

 

 

$

29,754

 

 

$

1,552

 

Dasan Invest Co., Ltd.*

 

 

 

 

 

 

 

 

 

 

 

 

 

 

32

 

 

 

$

2,278

 

 

$

247

 

 

$

755

 

 

$

29,754

 

 

$

1,584

 

    As of December 31, 2016
Counterparty DNI Ownership Interest Account receivables Other receivables Deposits for lease* Accounts payable Other payables Loans
DNI (Parent Company) N/A $6,679
 $171
 $690
 $360
 $6,861
 $6,800
ABLE 61.99% 53
 
 9
 
 
 
DASAN France 100% 23
 
 
 
 
 
DASAN INDIA Private Limited 100% 2,606
 
 
 
 
 
D-Mobile 100% 3,943
 
 
 
 
 
HANDYSOFT, Inc. 17.64% 2
 
 
 
 
 
J-Mobile Corporation 68.56% 5
 
 
 
 
 
Tomato Soft Ltd. 100% 
 
 
 
 16
 
Tomato Soft (Xi'an) Ltd. 100% 
 
 
 70
 63
 
    $13,311
 $171
 $699
 $430
 $6,940
 $6,800

    As of December 31, 2015
Counterparty DNI Ownership Interest Account receivables (As Restated) Other receivables Deposits for lease* Other payables Loans
DNI (Parent Company) N/A $14,553
 $1,431
 $3,137
 $
 $
CHASAN Networks Co., Ltd. 100% 
 
 
 62
 
DMC, Inc. 100% 
 1
 
 
 
HANDYSOFT, Inc. 17.64% 22
 
 
 
 
J-Mobile Corporation 68.56% 
 310
   
 430
Tomato Soft Ltd. 100% 
 
 
 16
 
Tomato Soft (Xi'an) Ltd. 100% 
 
 
 55
 
    $14,575
 $1,742
 $3,137
 $133
 $430

* IncludedDasan Invest Co., Ltd. holds 3.1% of DNI’s shares

The related party receivable and payable balances are reflected in other assets related to deposits for lease inthe respective balance sheet captions on the consolidated balance sheets as of December 31, 20162021 and 2015.2020.

(13) Leases

The Company leases certain properties and buildings (including manufacturing facilities, warehouses, and office spaces) and equipment under various arrangements which provide the right to use the underlying asset and require lease payments for the lease term.  The Company’s lease portfolio consists of operating leases which expire at various dates through 2028.  

The Company determines if an arrangement contains a lease at inception. The Company evaluates each service contract upon inception to determine whether it is, or contains, a lease. Such determination is made by applying judgment in evaluating each service contract within the context of the 5-step decision making process under ASC 842. The key concepts of the 5-step decision making process that the Company evaluated can be summarized as: (1) is there an identified physical asset; (2) does the Company have the right to substantially all the economic benefits from the asset throughout the contract period; (3) does the Company control how and for what purpose the asset is used; (4) does the Company operate the asset; and (5) did the Company design the asset in a way that predetermines how it will be used.

Assets and liabilities related to operating leases are included in the consolidated balance sheets as right-of-use assets from operating leases, operating lease liabilities - current and operating lease liabilities - non-current.

Operating lease right-of-use assets and liabilities are recognized at commencement date based on the present value of lease payments over the lease term. Many of the Company’s lease agreements contain renewal options; however, the Company does not recognize right-of-use assets or lease liabilities for renewal periods unless it is determined that the Company is reasonably certain of renewing the lease at inception or when a triggering event occurs. Some of the Company’s lease agreements contain rent escalation clauses, rent holidays, capital improvement funding or other lease concessions.

The Company recognizes minimum rental expense on a straight-line basis based on the fixed components of a lease arrangement. The Company amortizes this expense over the term of the lease beginning with the date of initial possession, which is the date lessor makes an underlying asset available for use. Variable lease components represent amounts that are not fixed in nature, are not tied to an index or rate, and are recognized as incurred.

In determining its right-of-use assets and lease liabilities, the Company applies a discount rate to the minimum lease payments within each lease agreement. ASC 842 requires the Company to use the rate of interest that a lessee would have to pay to borrow on a collateralized basis over a similar term an amount equal to the lease payments in a similar economic environment.  The Company determines the incremental borrowing rate for each lease based primarily on its lease term and the economic environment of the applicable country or region.  


The components of lease expense were as follows for the years ended December 31, 2021 and 2020 (in thousands):

 

 

Years ended December 31,

 

 

 

2021

 

 

2020

 

Operating lease cost

 

$

4,201

 

 

$

5,393

 

Short-term lease cost

 

 

1,302

 

 

 

264

 

Total net lease cost

 

$

5,503

 

 

$

5,657

 

Short-term lease costs related to the short-term rent of office spaces and office equipment leases. Variable lease cost was 0t significant for the years ended December 31, 2021 and 2020.

During the year ended December 31, 2021, the Company recorded $4.2 million in impairment charges on the right-of-use assets, including $2.5 million related to the restructuring in Hanover, Germany and $1.7 million related to the headquarters relocation to Plano, Texas. These charges were included into restructuring and other charges and impairment of long-lived assets, respectively, on the consolidated statements of comprehensive income (loss).

Supplemental cash flow information related to the Company’s operating leases was as follows for the years ended December 31, 2021 and 2020 (in thousands):

 

 

Years ended December 31,

 

 

 

2021

 

 

2020

 

Operating cash outflows from operating leases

 

$

5,936

 

 

$

5,307

 

Right-of-use assets obtained in exchange for operating lease obligations

 

 

2,783

 

 

 

1,405

 

The following table presents the lease balances within the Company’s consolidated balance sheets, weighted average remaining lease term, and weighted average discount rates related to the Company’s operating leases as of December 31, 2021 and 2020 (in thousands):

 

 

As of December 31,

 

 

 

2021

 

 

2020

 

Lease Assets and Liabilities

 

 

 

 

 

 

 

 

Assets:

 

 

 

 

 

 

 

 

Right-of-use assets from operating leases

 

$

12,640

 

 

$

18,483

 

 

 

 

 

 

 

 

 

 

Liabilities:

 

 

 

 

 

 

 

 

Operating lease liabilities - current

 

$

4,097

 

 

$

4,494

 

Operating lease liabilities - non-current

 

 

12,103

 

 

 

15,959

 

Total operating lease liabilities

 

$

16,200

 

 

$

20,453

 

Weighted average remaining lease term

 

4.2 years

 

 

4.6 years

 

Weighted average discount rate

 

 

5.6

%

 

 

5.7

%

The following table presents the maturity of the Company’s operating lease liabilities as of December 31, 2021 (in thousands):

2022

 

$

4,866

 

2023

 

 

4,468

 

2024

 

 

3,899

 

2025

 

 

2,596

 

2026

 

 

1,698

 

Thereafter

 

 

835

 

Total operating lease payments

 

 

18,362

 

Less: imputed interest

 

 

(2,162

)

Total operating lease liabilities

 

$

16,200

 


(14) Commitments and Contingencies

Operating Leases
The Company has entered into operating leases for certain office space and equipment, some of which contain renewal options and escalation clauses. Estimated future lease payments under all non-cancelable operating leases with terms in excess of one year, including taxes and service fees, are as follows (in thousands):
 Minimum Future Lease Payments
Year ending December 31: 
2017$3,633
20182,916
20192,335
20202,192
20212,178
Thereafter8,166
Total minimum lease payments$21,420

Performance Bonds

In the normal course of operations, from time to time, the Company arranges for the issuance of various types of suretyperformance bonds, such as performance, warranty, and bid and performance bonds, whichin the form of bank guarantees or surety bonds. These instruments are agreementsarrangements under which the financial institution or surety company guaranteesprovides a financial guarantee that the Company will perform in accordance with contractual or legal obligations. As of December 31, 2016,2021, the Company had $0.5$8.9 million of surety bonds guaranteed by third parties.

Purchase Commitments

The Company has agreements with various contract manufacturers which include non-cancellable inventory purchase commitments.

The Company’s inventory purchase commitments typically allow for cancellation of orders 30 days in advance of the required inventory availability date as set by the Company at time of order. However, the Company has agreements with various contract manufacturers and semiconductor companies which include non-cancellable inventory purchase commitments. The amount of our long-term non-cancellable purchase commitments outstanding net of reserve, was $10.3$3.2 million as of December 31, 2016.

On July 16, 2017,2021.  

Litigation

From time to time, the Company reached an agreement with a supplier to cancel a purchase arrangement for certain inventory which was committed through 2020. Under the settlement, the Company is no longer required to fulfill its commitment to purchase $4.3 million in inventory. In connection with the settlement, the Company also entered into a technical support services arrangement with the supplier through April 30, 2021.

Payment Guarantees Provided by Third Parties

The following table sets forth third parties that have provided payment guarantees of the Company's indebtedness and other obligations as of December 31, 2016 (in thousands):
Guarantor Amount Guaranteed Description of Obligations Guaranteed
     
DNI $3,972
 Borrowings from Shinhan Bank
DNI 1,986
 Purchasing card from Shinhan Bank
DNI 4,800
 Borrowings from KEB Hana Bank
DNI 11,379
 Credit facility and purchasing card from Industrial Bank of Korea
DNI 6,000
 Credit facility from NongHyup Bank
DNI 993
 Purchasing card from NongHyup Bank
Industrial Bank of Korea 6,881
 Credit facility
Industrial Bank of Korea 286
 Credit facility (local)
NongHyup Bank 3,678
 Credit facility
Shinhan Bank 299
 Purchasing card
KEB Hana Bank 59
 Performance bonds
State Bank of India 37
 Performance bonds
Seoul Guarantee Insurance Co. 403
 Performance payment guarantee
  $40,773
  
Royalties
The Company has certain royalty commitments associated with the shipment and licensing of certain products. Royalty expense is generally based on a dollar amount per unit shipped or a percentage of the underlying revenue and is recorded in cost of revenue.
(15) Litigation
The Company is subject to various legal proceedings, claims and litigation arising in the ordinary course of business. While the outcome of these matters is currently not determinable, the Company records an accrual for legal contingencies that it has determined to be probable to the extent that the amount of the loss can be reasonably estimated. The Company does not expect that the ultimate costs to resolve these matters will have a material adverse effect on its consolidated financial position, or results of operations.operations or cash flows. However, litigation is subject to inherent uncertainties, and unfavorable rulings could occur. If an unfavorable ruling were to occur, there exists the possibility of a material adverse impact on the results of operations and cash flows of the reporting period in which the ruling occurs, or future periods.
(16)

(15) Employee Benefit Plans

The

Defined Contribution Plans

In the U.S., the Company maintains a 401(k) plan for its employees whereby eligible employees may contribute up to a specified percentage of their earnings, on a pretax basis, subject to the maximum amount permitted by the Internal Revenue Code. Under the 401(k) plan, the Company may makemade discretionary contributions. The 401(k)contributions to the plan is a Legacy Zhone plan.in 2021. The Company made no discretionary contributions to the plan in 2016.

2020. For the year ended December 31, 2021, the Company recorded an expense of $0.5 million compared to 0 expense for the year ended December 31, 2020.

The Company also maintains a defined contribution plan for its employees in Korea. Under the defined contribution plan, the Company contributes 8.33%the equivalent of 8.3% of an employee's gross salary into the plan. For each of the years ended December 31, 2021 and 2020, the Company recorded an expense of $1.3 million for the plan.

Defined Benefit Plans

The Company sponsors defined benefit plans for its employees in Germany and Japan. Defined benefit plans provide pension benefits based on compensation and years of service. The Germany plans were frozen as of September 30, 2003 and have not been offered to new employees after that date.

The following provides a reconciliation of the changes in benefit obligation, and the funded status at the end of the years (in thousand):

 

Years ended December 31,

 

 

2021

 

 

2020

 

Benefit obligation at beginning of period

$

20,052

 

 

$

17,671

 

Service cost

 

115

 

 

 

95

 

Interest cost

 

82

 

 

 

191

 

Benefits paid

 

(592

)

 

 

(568

)

Actuarial (gain) loss

 

(1,606

)

 

 

1,002

 

Foreign currency exchange rate change

 

(1,524

)

 

 

1,661

 

Benefit obligation at end of period

 

16,527

 

 

 

20,052

 

Underfunded status at end of period

$

16,527

 

 

$

20,052

 


The Company has recorded the 2021 and 2020 underfunded status as a long-term liability on the consolidated balance sheets.The Company holds pension insurance contracts, with the Company as beneficiary, in the amount of $2.9 million and $3.5 million as of December 31, 2021 and 2020, respectively, related to individuals under the pension plans. The Company records these insurance contracts based on their cash surrender value at the balance sheet dates. These insurance contracts are classified as other assets on the consolidated balance sheet. The Company intends to use any proceeds from these policies to fund the pension plans. However, since the Company is the beneficiary on these policies, these assets have not been designated pension plan every quarter.assets.

The net periodic benefit cost related to the plans consisted of the following components during the years ended December 31, 2021 and 2020 (in thousands):

 

Years ended December 31,

 

Net Periodic Benefit Cost

2021

 

 

2020

 

Service Cost

$

115

 

 

$

95

 

Interest Cost

 

82

 

 

 

170

 

Net amortization of net gain (loss)

 

107

 

 

 

21

 

Net periodic benefit cost

$

304

 

 

$

286

 

The service cost component of net benefit cost is presented within cost of revenue or selling, marketing, general and administrative expense on the accompanying consolidated statements of comprehensive income (loss), in accordance with where compensation cost for the related associate is reported. All other components of net benefit cost, including interest cost and net amortization noted above, are presented within other income/expense, net in the accompanying consolidated statements of comprehensive income (loss).

The following table presents changes in benefit obligations recognized net of tax in other comprehensive income during the years ended December 31, 2021 and 2020 (in thousands):

 

Years ended December 31,

 

 

2021

 

 

2020

 

Amortization of net (gain) loss

$

(107

)

 

$

(21

)

Actuarial (gain) loss in the current period

 

(1,606

)

 

 

1,002

 

Net change during the period

$

(1,713

)

 

$

981

 

The increase in the actuarial gain during the year ended December 31, 2021, compared to the year ended December 31, 2020 was mainly due to the increase in the discount rate, resulting from an increase in the implicit rate of high-quality fixed income investments. The estimated net loss and prior service cost for the plans that will be amortized from accumulated other comprehensive loss into net periodic benefit cost over the next fiscal year is not significant. The Company expects to make no contributions to the plans in 2022.

The weighted average assumptions used in determining the periodic net cost and benefit obligation information related to the plans are as follows:

(17)

 

Years ended December 31,

 

 

2021

 

 

2020

 

Discount rate

 

1.0

%

 

 

0.4

%

Rate of compensation increase

 

1.7

%

 

 

1.7

%

The following benefit payments, which are funded by the Company, are expected to be paid (in thousands):

2022

 

$

687

 

2023

 

 

713

 

2024

 

 

717

 

2025

 

 

720

 

2026

 

 

730

 

2027 - 2031

 

$

3,695

 

(16) Enterprise-Wide Information

The Company is a global provider of ultra-broadband network access solutions and communications equipment forplatforms deployed by advanced Tier 1, national and regional service providerproviders and enterprise networks.customers. There are no segment managers who are held accountable for operations, operating results and plans for levels or components below the Company unit level.


Accordingly, the Company is considered to be in a single reporting segment and operating unit structure.segment. The Company’s chief operating decision makers aremaker is the Company’s Co-ChiefChief Executive Officers,Officer, who reviewreviews financial information presented on a consolidated basis accompanied bywith disaggregated information about revenues by geographic region for purposes of making operating decisions and assessing financial performance.

The Company attributes revenue from customers to individual countries based on location shipped. The following summarizesRefer to Note 1(f) Revenue Recognition for the required disclosures about geographicon geographical concentrations and revenuerevenues by products and services (in thousands):


 Years ended December 31,
 2016 2015 2014
Revenue by geography:  As Restated As Restated
United States$16,872
 $4,426
 $12,526
Canada1,967
 7
 
Total North America18,839
 4,433
 12,526
Latin America9,604
 2,510
 1,318
Europe, Middle East, Africa13,611
 9,383
 20,865
Korea77,979
 114,676
 99,646
Other Asia Pacific30,271
 8,194
 5,039
Total International131,465
 134,763
 126,868
Total$150,304
 $139,196
 $139,394
 Years ended December 31,
 2016 2015 2014
Revenue by products and services:  As Restated As Restated
Products$142,238
 $133,036
 $132,282
Services8,066
 6,160
 7,112
Total$150,304
 $139,196
 $139,394
source.

The Company's property, plant and equipment, net of accumulated depreciation, were located in the following geographical areas (in thousands) as of December 31, 20162021 and 2015 (in thousands):2020:

 

 

As of December 31,

 

 

 

2021

 

 

2020

 

United States

 

$

6,105

 

 

$

2,878

 

Korea

 

 

2,367

 

 

 

2,472

 

Japan

 

 

799

 

 

 

952

 

Canada

 

 

280

 

 

 

 

Germany

 

 

210

 

 

 

761

 

Other

 

 

81

 

 

 

83

 

 

 

$

9,842

 

 

$

7,146

 

 As of December 31,
 2016 2015
United States$4,094
 $113
Korea1,455
 2,138
Japan and Vietnam739
 
 $6,288
 $2,251

(18) Quarterly Information (unaudited)
 Year ended December 31, 2016
 
Q1 (1)
 
Q2 (1)
 
Q3 (1) (2)
 
Q4 (2)
 (in thousands, except per share data)
Net revenue$25,340
 $34,252
 $31,240
 $59,472
Gross profit4,611
 9,002
 9,300
 18,034
Operating loss(4,341) (165) (5,114) (3,429)
Net loss(3,761) (533) (4,789) (6,245)
Net income (loss) attributable to non-controlling interest6
 33
 (56) 15
Net loss attributable to DASAN Zhone Solutions, Inc.(3,767) (566) (4,733) (6,260)
Net loss per share attributable to DASAN Zhone Solutions, Inc.:       
Basic$(0.40) $(0.06) $(0.42) $(0.38)
Diluted(0.40) (0.06) (0.42) (0.38)
Weighted-average shares outstanding:       
Basic9,493
 9,493
 11,139
 16,375
Diluted9,493
 9,493
 11,139
 16,375
(1) Certain prior quarterly financial information has been revised due to correction of certain errors.  The

(17) Subsequent Events

Equity Offering

On February 10, 2022, the Company identified and recorded immaterial errors related to the quarters ended March 31, 2016, June 30, 2016 and September 30, 2016.  The immaterial errors resulted from overstatement of net revenue and the associated related costs.  The overall impact of the errors on the Company's consolidated financial position and results of operations is not material and as such, previously filed Quarterly Reporta “shelf” registration statement on Form 10-Q affectedS-3 to register up to $150 million of Company common stock, representing an indeterminate number of shares of common stock as may be issued from time to time pursuant to underwritten public offerings, negotiated transactions, block trades or a combination of these methods at indeterminate prices. Included on this registration statement as a secondary offering are 10,093,015 shares of Company common stock held by the errors has not been amended.

The adjustments resulted in a decrease in revenues of $0.5 million, $1.0 million and $0.8 million for the quarters ended March 31, 2016, June 30, 2016 and September 30, 2016, respectively, and increase in net losses of $0.3 million, $0.6 million and $0.1 million for the quarters ended March 31, 2016, June 30, 2016 and September 30, 2016, respectively.
(2) Results include the operating results of Legacy Zhone from and after SeptemberDNI.

Revolving Credit Agreement

On February 9, 2016.

The information set forth below for all quarters and year-to-date periods in fiscal year 2015 has been restated to correct the misstatements described in Note 1. The following tables reconcile the amounts as previously reported in the applicable financial statement to the corresponding restated amounts. All financial statements are unaudited.

 Year ended December 31, 2015
 Q1 Q2
 As Previously Reported Restatement Adjustments As Restated As Previously Reported Restatement Adjustments As Restated
 (in thousands, except per share data)
Net revenue$38,727
 $(322) $38,405
 $32,021
 $(188) $31,833
Gross profit9,755
 (322) 9,433
 8,480
 (188) 8,292
Operating income (loss)137
 (103) 34
 (2,108) (170) (2,278)
Net income (loss)389
 (103) 286
 (2,547) (170) (2,717)
Net income (loss) per share:           
Basic$0.04
 $(0.01) $0.03
 $(0.28) $(0.01) $(0.29)
Diluted0.04
 (0.01) 0.03
 (0.28) (0.01) (0.29)
Weighted-average shares outstanding:           
Basic9,222
 9,222
 9,222
 9,233
 9,233
 9,233
Diluted9,222
 9,222
 9,222
 9,233
 9,233
 9,233
 Year ended December 31, 2015
 Q3 Q4
 As Previously Reported Restatement Adjustments As Restated As Previously Reported Restatement Adjustments As Restated
 (in thousands, except per share data)
Net revenue$22,591
 $(68) $22,523
 $46,686
 $(251) $46,435
Gross profit5,817
 (18) 5,799
 12,587
 (225) 12,362
Operating income (loss)(2,981) (18) (2,999) 2,337
 (71) 2,266
Net income (loss)(2,779) (18) (2,797) 1,973
 (84) 1,889
Net income (loss) per share:           
Basic$(0.30) $
 $(0.30) $0.21
 $(0.01) $0.20
Diluted(0.30) 
 (0.30) 0.21
 (0.01) 0.20
Weighted-average shares outstanding:           
Basic9,331
 9,331
 9,331
 9,459
 9,459
 9,459
Diluted9,331
 9,331
 9,331
 9,459
 9,459
 9,459
(19) Subsequent Events
Management Transition
On June 27, 2017, the Company and its former Chief Technology Officer of2022, the Company entered into an agreement setting for the terms pursuant to which the former Chief Technology Officer ceased to be an officer and employee ofa Credit Agreement with the Company, effective July 11, 2017. Under the terms of this agreement, the former Chief Technology Officer: (a) received a severance payment equivalent to two months and two weeks of his base salary; (b) received an acceleration of unvested stock options to purchase 5,000 shares then held by the former Chief Technology Officer and an extension of exercise period with respect to such options until December 31, 2017; (c) has until October 9, 2017 to exercise his remaining vested options; and (d) received COBRA benefits for up to one month.
On September 11, 2017, the Company announced management transition changes in connection with the first anniversary of the Merger and the progress successfully attained in the integration of the businesses of Legacy Zhone and DNS. The Legacy Zhone senior management team of James Norrod and Kirk Misaka had been serving as the Company’s Co-Chief Executive Officer and Chief Financial Officer, respectively, since the completion of the DNS acquisition under one-year employment agreements to ensure a smooth transition and integration of the businesses of legacy Zhone and DNS. Given the successful integration over the past year, the Company agreed with Messrs. Norrod and Misaka that they would step down from their management roles effective as of September 11, 2017. On September 11, 2017, Mr. Norrod also agreed to step down as a member of the Board of Directors of the Company. In connection with their resignations from their management roles, Messrs. Norrod and Misaka entered into release agreements with the Company. Pursuant to his release agreement, Mr. Norrod is entitled to receive a lump sum cash payment of $300,000, continued health benefits at Company expense for a period of six

months following his termination of employment and an extension of the period of time to exercise his vested stock options through September 11, 2018. Pursuant to his release agreement, Mr. Misaka is entitled to receive a lump sum cash payment of $232,500 and an extension of the period of time to exercise his vested stock options through September 11, 2018. Mr. Misaka has agreed to remain in the employborrower, certain subsidiaries of the Company, as its Corporate Treasurerguarantors, the lenders party thereto and SecretaryJPMorgan Chase Bank, N.A., as administrative agent.  The Credit Agreement provides for a transitional periodrevolving loans in an aggregate principal amount of up to assist with the transition$30 million, up to $15 million of his responsibilities, with the same base salary as was in effect prior to the management transition, and continued vestingwhich is available for letters of his outstanding stock options during the term of his employment, although his continued employment will no longer be governed by the terms of his employment agreement, which was terminated effective September 11, 2017. As part of this management transition, effective September 11, 2017, the Board of Directors ofcredit. The Credit Agreement matures on February 9, 2024.  The maximum amount that the Company appointed Il Yung Kimcan borrow under the Credit Agreement is subject to serve as President, Chief Executive Officera borrowing base, which is based on a percentage of eligible accounts receivable and Acting Chief Financial Officereligible inventory, subject to reserves and other adjustments, plus $10 million.

Loans under the Credit Agreement bear interest at the Company’s option at (i) the prime rate plus 2.00%, (ii) the adjusted term SOFR rate plus 2.90% or (iii) the adjusted daily simple SOFR rate plus 2.90%.  We pay a per annum fee of 2.90% on all letters of credit issued under the Company.

Patent Infringement Injunction Relating to Supplier
In July 2017,Credit Agreement, and we pay a suppliercommitment fee of 0.25% per annum on the Company lost a patent infringement case relating to certain components that are used in Company products. As a result of this injunction,unused revolving credit availability under the Company will no longer sell or ship these products to Germany.
Credit Agreement.


ITEM 9.

CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND FINANCIAL DISCLOSURE

None.

ITEM 9.    CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND FINANCIAL DISCLOSURE
The information required by this Item 9 and Item 304(a) of Regulations S-K was previously reported in our Current Reports on Form 8-K filed on October 17, 2016 and December 2, 2016.
ITEM 9A.    

ITEM 9A.

CONTROLS AND PROCEDURES

Evaluation of Disclosure Controls and Procedures

We maintain disclosure controls and procedures designed to provide reasonable assurance of achieving the objective that information required to be disclosed in our reports filed or submitted pursuant to the Securities Exchange Act of 1934 (the Exchange Act)“Exchange Act”) is recorded, processed, summarized and reported within the time periods specified in the SEC’s rules and forms, and that such information is accumulated and communicated to our management, including our Co-ChiefChief Executive OfficersOfficer and Chief Financial Officer, as appropriate to allow for timely decisions regarding required disclosures. In designing and evaluating the disclosure controls and procedures, management recognizes that any controls and procedures, no matter how well designed and operated, can provide only reasonable assurance of achieving the desired control objectives, and management applies its judgment in evaluating the cost-benefit relationship of possible controls and procedures.

As required by SEC Rule 13a-15(b), of the Exchange Act, we conducted an evaluation of the effectiveness of the design and operation of our disclosure controls and procedures as of December 31, 2016,2021, the end of the period covered by this report. The evaluation was done under the supervision and with the participation ofAnnual Report on Form 10-K. Our management, including our Co-ChiefChief Executive OfficersOfficer and our Chief Financial Officer. Based upon this evaluationOfficer, supervised and participated in the results of the independent investigation conducted by the Audit Committee (as discussed above, under "Business - Audit Committee Investigation"), our Co-Chief Executive Officers and Chief Financial Officerevaluation. They concluded that because of the material weaknesses in our internal control over financial reporting described below under “Management’s Annual Report on Internal Control over Financial Reporting,” our disclosure controls and procedures were not effective as of December 31, 2016.

2021.

Management’s Annual Report on Internal Control over Financial Reporting

Our management is responsible for establishing and maintaining adequate internal control over financial reporting to provide reasonable assurance regarding the reliability of our financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. Management assessed the effectiveness of our internal control over financial reporting as of December 31, 2016,2021, the end of our fiscal year.the period covered by this Annual Report on Form 10-K. In making this assessment, management used the criteria established in Internal Control - Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO). Based on our assessment of internal control over financial reporting, management hasCommission. Management concluded that, as of December 31, 2016,2021, our internal control over financial reporting becausewas effective based on those criteria. The effectiveness of the material weaknesses in our internal control over financial reporting described below, was not effective.

A material weakness is a deficiency, or a combination of deficiencies, in internal control over financial reporting such that there is a reasonable possibility that a material misstatement of the registrant’s annual or interim financial statements will not be prevented or detected on a timely basis. Based on the results of the independent investigation and due to the incorrect application of generally accepted accounting principles that resulted in material misstatements and a restatement of our unaudited condensed consolidated financial statements for the three and nine months ended September 30, 2016, management identified material weaknesses in our internal control over financial reporting as of December 31, 2016. Specifically, we did not

maintain2021 has been audited by Ernst & Young LLP, an effectiveindependent registered public accounting firm, and Ernst & Young LLP has issued a report on our internal control environment as there was an insufficient complement of personnel with appropriate accounting knowledge, experience and competence, resulting in incorrect application of generally accepted accounting principles. This material weakness contributed to the following material weaknesses. We did not maintain effective controls over our financial close process. Also, we did not design and maintain effective controls over the review of supporting information to determine the completeness and accuracy of the accounting for complex transactions, specifically related to the business combination that occurred on September 9, 2016,reporting, which resulted in an incorrect application of generally accepted accounting principles that resulted in material misstatements and a restatement of our unaudited condensed consolidated financial statements for the three and nine months period ended September 30, 2016. Additionally, these material weaknesses could result in a misstatement in the financial statements that would result in a material misstatement in the annual or interim consolidated financial statements that would not be prevented or detected.
Remediation Plan for Material Weaknesses in Internal Control over Financial Reporting
As of the date of this report, we are re-assessing the design of our controls and modifying processes related to the accounting for significant and unusual transactions as well as enhancing monitoring and oversight controls in the application of applicable accounting guidance related to such transactions. In connection therewith, we anticipate that we will hire additional accounting personnel with relevant skills, training and experience, and conduct further training of accounting and finance personnel.
is included herein.

Changes in Internal Control over Financial Reporting

Except as described above, there were no

There have not been any changes in our internal control over financial reporting that occurred during our lastthe most recent fiscal quarter that have materially affected or are reasonably likely to materially affect our internal control over financial reporting. Merger-related integration activities may lead us to modify certain internal controls in future periods.

Inherent Limitations on Effectiveness of Controls

Our management, including our Co-ChiefChief Executive OfficersOfficer and Chief Financial Officer, does not expect that our disclosure controls and procedures or our internal control over financial reporting will prevent or detect all error and all fraud. A control system, no matter how well designed and operated, can provide only reasonable, not absolute, assurance that the control system’s objectives will be met. The design of a control system must reflect the fact that there are resource constraints, and the benefits of controls must be considered relative to their costs. Further, because of the inherent limitations in all control systems, no evaluation of controls can provide absolute assurance that misstatements due to error or fraud will not occur or that all control issues and instances of fraud, if any, within the companyCompany have been detected. These inherent limitations include the realities that judgments in decision-making can be faulty and that breakdowns can occur because of simple error or mistake. Controls can also be circumvented by the individual acts of some persons, by collusion of two or more people, or by management override of the controls. The design of any system of controls is based in part on certain assumptions about the likelihood of future events, and there can be no assurance that any design will succeed in achieving its stated goals under all potential future conditions. Projections of any evaluation of controls effectiveness to future periods are subject to risks. Over time, controls may become inadequate because of changes in conditions or deterioration in the degree of compliance with policies or procedures.


Report of Independent Registered Public Accounting Firm

To the Stockholders and the Board of Directors of DZS Inc.

Opinion on Internal Control Over Financial Reporting

We have audited the internal control over financial reporting of DZS Inc. and subsidiaries (the Company) as of December 31, 2021 based on criteria established in Internal Control—Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (2013 framework) (the COSO criteria). In our opinion, the Company maintained, in all material respects, effective internal control over financial reporting as of December 31, 2021, based on the COSO criteria.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the consolidated balance sheet of the Company as of December 31, 2021, the related consolidated statements of comprehensive income (loss), stockholders’ equity, and cash flows for the year then ended, and our report dated March 9, 2022 expressed an unqualified opinion thereon.

Basis for Opinion

The Company's management is responsible for maintaining effective internal control over financial reporting and for its assessment of the effectiveness of internal control over financial reporting included in the accompanying Management’s Report on Internal Control Over Financial Reporting. Our responsibility is to express an opinion on the Company’s internal control over financial reporting based on our audit. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audit in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects.

Our audit included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, testing and evaluating the design and operating effectiveness of internal control based on the assessed risk, and performing such other procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion.

Definition and Limitations of Internal Control Over Financial Reporting

A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

/s/ Ernst & Young LLP

Dallas, Texas

March 9, 2022


ITEM 9B.

OTHER INFORMATION

None.

ITEM 9B.    OTHER INFORMATION

ITEM 9C.

DISCLOSURE REGARDING FOREIGN JURISDICTIONS THAT PREVENT INSPECTIONS.

None.


PART III


ITEM 10.    

ITEM 10.

DIRECTORS, EXECUTIVE OFFICERS AND CORPORATE GOVERNANCE

EXECUTIVE OFFICERS

The information required in this item relating to our corporate governance, directors and nominees, and the compliance with Section 16(a) of the Securities Exchange Act of 1934 is incorporated herein by reference to the sections of our definitive proxy statement for our 2021 Annual Meeting of Stockholders to be filed with SEC within 120 days of the end of our fiscal year (the “Proxy Statement”) entitled “Corporate Governance Principles and Board Matters,” “Ownership of Securities” and “Proposal 1: Election of Directors.” Since our last Annual Report on Form 10-K, we have not made any material changes to the procedures by which our stockholders may recommend nominees to the Board of Directors.

Information relating to our executive officers is included under the caption "Executive Officers"“Information About our Executive Officers” in Part I of this Annual Report on Form 10-K, pursuant to General Instruction G(3) of Form 10-K.

DIRECTORS
In accordance with our certificate of incorporation, we divide our Board of Directors into three classes, with Class I consisting of two members, Class II consisting of one member, and Class III consisting of two members. We elect one class of directors to serve a three year term at each annual meeting of stockholders. Each elected director will continue to serve until his or her successor is duly elected or appointed.
The following table sets forth for each director: the age of such director, the positions currently held with the Company, the year in which such director’s current term will expire, and the class of such director.
Name Age Position 
Term
Expires
 Class
Min Woo Nam 54 Chairman of the Board of Directors 2019 III
Michael Connors 75 Director 2017 I
Il Yung Kim 60 
President, Chief Executive Officer, Acting Chief Financial Officer and Director

 2019 III
Seong Gyun Kim 50 Director 2017 I
Sung-Bin Park 50 Director 2018 II
All of our directors bring to the Board of Directors a wealth of executive leadership experience derived from their service as executives or managing directors of small, large and multinational corporations or venture capital firms . They also bring extensive board experience. The process undertaken by the Corporate Governance and Nominating Committee in recommending qualified director candidates is described below under “Corporate Governance Principles and Board Matters-Committee Composition-Corporate Governance and Nominating Committee.” See also “Corporate Governance Principles and Board Matters - Board Structure” above for a discussion of requirements with respect to our Board of Directors prior to September 9, 2018. Certain individual qualifications and skills of our directors that contribute to the Board of Director’s effectiveness as a whole are described in the following paragraphs.
Min Woo Nam has served as the Chairman of the Board of Directors of DZS since the consummation of the Merger on September 9, 2016. Mr. Nam currently serves as the Chief Executive Officer and Chairman of the Board of Directors of DNI, a position he has held since March 1993. Mr. Nam previously served as the Chief Executive Officer of Korea Ready System and Dasan Engineering Co., Ltd. His work has included export of technical services to Silicon Valley, California since 1999. Mr. Nam served as General Chairman of the International Network of Korean Entrepreneurs from 2004 until 2006, and has served as Director of the Korea Entrepreneurship Foundation since November 2011. Previously, he has served as Chairman of the Korean Venture Business Association. Mr. Nam completed his B.E.in Mechanical Engineering from Seoul National University in 1984. We believe Mr. Nam is well suited to serve as the Chairman of our Board of Directors given his extensive experience in chief executive officer and chairman roles and his in-depth knowledge of the telecommunications industry.
Michael Connors has served as a director of DZS since November 2003 following the consummation of Legacy Zhone’s merger with Tellium, Inc. Dr. Connors had been a member of Tellium’s board of directors since June 2000. From 1992 to 1998, Dr. Connors held the office of President of AOL Technologies, an Internet service provider, where he led the creation and growth of AOLnet and the development of AOL software and services. Dr. Connors is currently a director of The Connors Foundation. Dr. Connors earned a B.S. in Engineering, an M.S. in Statistics and a Ph.D. in Operations Research from Stanford University. We believe Dr. Connors is well suited to serve on our Board of Directors given his extensive knowledge of the communications industry based on his experience as President of AOL Technologies and director of Tellium.
Il Yung Kim has served as a director and Co-Chief Executive Officer of DZS since the consummation of the Merger on September 9, 2016, and assumed his current role of director and President, Chief Executive Officer and Acting Chief
Financial Officer as part of the management transition in connection with the first anniversary of the Merger in September 2017. Prior to joining DZS, Mr. Kim served as a consultant to DNI in connection with the Merger. From September 2014 to

August 2016, Mr. Kim served as Chief Executive Officer of TukTak in Korea, an online startup company, which enables people with creative talents to collaborate and produce goods and services online. From December 2014 to August 2016, he also served as a strategic advisor for InMobi, a global mobile advertising platform provider. Previously, Mr. Kim held various positions with Korea Telecom, including as President and executive board member from 2013 to January 2014, and as Chief Strategy Officer from 2010 to 2013. Mr. Kim commenced his career with British Telecom in 1982, where he held various senior positions including Vice President of Technology and Innovation and Programme Director and Head of Technology and Investment. Mr. Kim holds a B.S. (with Honors) in Electronic Engineering and an M.S. Degree in Microwave and Modern Optics from University College, University of London. We believe Mr. Kim is well suited to be our Chief Executive Officer and serve on our Board of Directors given his extensive chief executive officer experience, his expertise in the business arena and his in-depth knowledge of the telecommunications industry.
Seong Gyun Kim has served as a director of DZS since the consummation of the Merger on September 9, 2016. Mr. Kim currently serves as the Chief Financial Officer and a director of Finetex EnE, Inc., a nanofiber technology company listed on KOSDAQ, positions he has held since 2008. Prior to joining Finetex, Mr. Kim served as a Vice President of Mbizkorea, a game development and game products try-and-buy service supplier company, from 2006 to 2008. From 2013 to 2016, Mr. Kim served as a director of Interpark Corp., a KOSDAQ-listed Korean online auction and shopping mall. Mr. Kim holds an M.B.A. from Ajou University in South Korea and a B.S. in International Economics from Seoul National University. We believe Mr. Kim is well suited to serve on our Board of Directors given his considerable experience in the business arena as well as serving on different boards of public companies.
Sung-Bin Park has served as a director of DZS since the consummation of the Merger on September 9, 2016. Mr. Park is a co-founder and Managing Director of TransLink Capital (a U.S.-based venture capital firm), a position he has held since February 2009. Mr. Park is also a founder and Chief Executive Officer of SPK Inc. (which provides Korean business development services to U.S.-based start-ups) and Spark and Associates (a consulting firm providing big data analytics services), positions he has held since May 2002 and November 2010, respectively. Mr. Park earned an M.B.A. from Stanford University and a B.S. in Materials Science and Engineering from Massachusetts Institute of Technology. We believe Mr. Park is well suited to serve on our Board of Directors given his extensive knowledge providing Korean business development services to U.S. based companies as founder and Chief Executive Officer of SPK Inc.
CORPORATE GOVERNANCE PRINCIPLES AND BOARD MATTERS
We are dedicated to maintaining the highest standards of business integrity. It is our belief that adherence to sound principles of corporate governance, through a system of checks, balances and personal accountability is vital to protecting our reputation, assets, investor confidence and customer loyalty. Above all, the foundation of our integrity is our commitment to sound corporate governance. Our corporate governance principles and Code of Conduct and Ethics can be found in the "Corporate Governance" section of our website at http://dasanzhone.com/about/investor-relations/corporate-governance/.
Board Structure
On September 9, 2016, we acquired DNS through the Merger. At the closing of the Merger, we issued 9,493,016 shares (post reverse stock split) of our common stock to DNI, as the sole stockholder of DNS, of which 949,302 shares (post reverse stock split) are being held in escrow as security for claims for indemnifiable losses in accordance with the agreement governing the Merger (the Merger Agreement). As a result, immediately following the effective time of the Merger, DNI held 58% of the outstanding shares of our common stock and the holders of our common stock immediately prior to the Merger retained, in the aggregate, 42% of the outstanding shares of our common stock.
On September 9, 2016, effective as of the effective time of the Merger and in accordance with the terms of the Merger Agreement, (1) Robert Dahl and Mahvash Yazdi resigned from our Board of Directors, (2) the size of our Board of Directors was increased from five to seven directors, (3) the Board of Directors appointed Min Woo Nam, Il Yung Kim, Seong Gyun Kim and Sung-Bin Park to fill the vacancies on the Board resulting from the resignations of Mr. Dahl and Ms. Yazdi and the newly created directorships, and (4) Mr. Nam was elected as Chairman of our Board of Directors. As required by the Merger Agreement, the appointments of Messrs. Nam, Kim, Kim and Park to the Board of Directors were designated by DNI.
In connection with the Merger, effective as of September 9, 2016, we amended our bylaws to provide that, from the closing of the Merger until September 9, 2018: (1) the number of directors constituting our Board of Directors shall be seven and (2) subject to the failure of any director to be re-elected to the Board of Directors by our stockholders, the Board of Directors shall be composed of the four directors designated at the closing by DNI (or a replacement approved by a majority of the remaining DNI-designated directors (or their replacements)) and the three directors designated at the closing by us (or a replacement approved by a majority of the remaining directors designated at the closing by us (or their replacements)). With respect to our 2017 and 2018 annual meetings of stockholders (or any special meeting of stockholders for the election of directors held prior to the second anniversary of the Merger), our bylaws require that the nominees for election to the relevant Class of the Board of

Directors at such meeting be comprised of the director(s) of that Class designated at the closing by DNI and us (or a replacement approved by the applicable remaining directors, as described above).
In connection with the Merger and in accordance with the terms of the Merger Agreement, on September 9, 2016, we also entered into a stockholder agreement with DNI, pursuant to which DNI has agreed, on the terms set forth therein, to vote its shares of our common stock until September 9, 2018 (1) in favor of the election of each person who is nominated by the Board of Directors for election to the Board in accordance with our bylaws and (2) against the removal of any such director unless such removal is recommended by a resolution approved by the affirmative vote of at least two-thirds of the entire Board of Directors.
On September 11, 2017, in connection with the first anniversary of the Merger and the progress successfully attained in the integration of the businesses of Legacy Zhone and DNS, we announced that the Legacy Zhone senior management team of James Norrod and Kirk Misaka were stepping down from their respective roles as Co-Chief Executive Officer and Chief Financial Officer. Messrs. Norrod and Misaka had been serving in those roles under one-year employment agreements to ensure a smooth transition and integration of the businesses of Legacy Zhone and DNS. Mr. Norrod resigned from DZS, including from our Board of Directors, as part of this management transition effective as of September 11, 2017. Mr. Misaka has agreed to remain in our employ as Corporate Treasurer and Secretary for a transitional period to assist with the transition of his responsibilities. Also effective as of September 11, 2017, Richard Kramlich resigned from the Board of Directors to focus on his other business endeavors. Under our bylaws, as Messrs. Norrod and Kramlich were designed by Legacy Zhone at the closing of the Merger, any director appointed to fill the vacancies created by their resignations must be approved by Michael Connors, as the remaining Legacy Zhone director designee. We do not intend to fill the vacancies on our Board of Directors created by the resignations of Messrs. Norrod and Kramlich at this time, but may elect to do so in the future.
The positions of Chairman and Chief Executive Officer are separate. The Board of Directors believes its current leadership structure is appropriate at this time to maximize the effectiveness of its oversight of management and to provide a perspective that is separate and distinct from that of management. The Board of Directors also believes the separation of the Chairman and Chief Executive Officer roles allows our Chief Executive Officer to focus his time and energy on operating and managing our business and leverages the Chairman’s experience and perspectives.
We have elected to be treated as a “controlled company” under Nasdaq Marketplace Rules because more than 50% of the voting power for the election of directors is held by DNI. As a “controlled company,” we may rely on exemptions from certain corporate governance requirements under Nasdaq Marketplace Rules, including the requirement that we have a majority of independent directors on the Board of Directors and requirements with respect to compensation and nominating and corporate governance committees.
Board Independence
The Board of Directors has affirmatively determined that each member of the Board of Directors, other than Min Woo Nam and Il Yung Kim, is independent under the criteria established by Nasdaq for independent board members. At the conclusion of the regularly scheduled Board of Directors meetings, the independent directors have the opportunity to and regularly meet outside of the presence of our management. In addition, each member of the Audit Committee of the Board of Directors is currently an independent director in accordance with Nasdaq standards.

Committee Composition
As of the date of this report, we had the following three standing committees: (1) Audit Committee, (2) Compensation Committee, and (3) Corporate Governance and Nominating Committee. The membership during the last fiscal year and the function of each of the committees are described below. Each of the committees operates under a written charter which can be found on the “Corporate Governance” section of our website at www.dasanzhone.com.
Director Audit Committee Compensation
Committee
 Corporate
Governance and
Nominating
Committee
Michael Connors (1) Member    
Robert Dahl (2) Chair Member Member
Morteza Ejabat (3)      
Il Yung Kim      
Seong Gyun Kim(2) Chair    
C. Richard Kramlich (1) (4) Member Member Member
Min Woo Nam (2)(4)   Chair Chair
James Norrod (5)      
Sung-Bin Park (4)(6) Member Member Member
Mahvash Yazdi (7)      
Number of Meetings in 2016 6 4 4
(1)Effective as of September 11, 2017, Mr. Kramlich resigned from his position as a director of DZS and member of the Compensation Committee and Corporate Governance and Nominating Committee, and Dr. Connors was appointed as a member of both committees to fill the resulting vacancies.
(2)Mr. Dahl resigned from his position as a director of DZS, Chairman of the Audit Committee and member of the Compensation Committee and Corporate Governance and Nominating Committee in connection with the Merger effective as of September 9, 2016. Mr. Seong Gyun Kim was appointed as Chairman of the Audit Committee to fill the vacancy effective as of September 9, 2016. Mr. Nam was appointed member of the Corporate Governance and Nominating Committee to fill the vacancy effective as of September 9, 2016.
(3)Mr. Ejabat resigned from his position as Executive Chairman of our Board of Directors effective as of January 31, 2016.
(4)Mr. Kramlich resigned from his position as Interim Chairman of our Board of Directors and as a member of the Audit Committee in connection with the Merger effective as of September 9, 2016. Mr. Nam was appointed Chairman of our Board of Directors effective as of September 9, 2016. Mr. Park was appointed as a member of the Audit Committee to fill the vacancy effective as of September 9, 2016.
(5)Mr. Norrod stepped down from his position as Co-Chief Executive Officer and resigned as a director of DZS effective as of September 11, 2017.
(6)Effective as of September 9, 2016, in connection with the Merger, the size of the Corporate Governance and Nominating Committee was expanded from two to three members. Mr. Park was appointed as a member of the Corporate Governance and Nominating Committee to fill the vacancy effective as of September 9, 2016.
(7)Ms. Yazdi resigned from her position as a director of DZS in connection with the Merger effective as of September 9, 2016.
Audit Committee
The Audit Committee reviews the professional services provided by our independent registered public accounting firm, the independence of such independent registered public accounting firm from our management, and our annual and quarterly financial statements. The Audit Committee also reviews such other matters with respect to our accounting, auditing and financial reporting practices and procedures as it may find appropriate or may be brought to its attention. The responsibilities and activities of the Audit Committee are described in greater detail in the section entitled “Audit Committee Report.”
Each member of the Audit Committee is an independent director under the criteria established by Nasdaq. Our Board of Directors has also determined that each member of the Audit Committee qualifies as an “audit committee financial expert,” as that term is defined in the rules and regulations established by the SEC. Stockholders should understand that this designation is a disclosure requirement of the SEC related to the experience and understanding of our Audit Committee members with respect to certain accounting and auditing matters. The designation does not impose upon them any duties, obligations or liabilities that are greater than are generally imposed on them as a member of the Audit Committee and the Board of Directors, and their

designation as audit committee financial experts pursuant to this SEC requirement does not affect the duties, obligations or liability of any other member of the Audit Committee or the Board of Directors.
Compensation Committee
The Compensation Committee is responsible for establishing and monitoring policies governing the compensation of executive officers. In carrying out these responsibilities, the Compensation Committee is responsible for reviewing the performance and compensation levels for executive officers, establishing salary and bonus levels for these individuals, and approving stock option grants for these individuals under our stock option plans. The objectives of the Compensation Committee are to correlate executive officer compensation with our business objectives and financial performance, and to enable us to attract, retain and reward executive officers who contribute to the long-term success of the company. The Compensation Committee seeks to reward executive officers in a manner consistent with our annual and long-term performance goals, and to recognize individual initiative and achievement among executive officers.
Corporate Governance and Nominating Committee
The Corporate Governance and Nominating Committee develops and reviews corporate governance principles applicable to the company, identifies individuals qualified to serve as directors, selects or recommends nominees to the Board of Directors for the election of directors, and advises the Board of Directors with respect to Board of Directors and committee composition. The Corporate Governance and Nominating Committee is also responsible for reviewing with the Board of Directors from time to time the appropriate skills and characteristics required of Board of Directors members in the context of the current size and make-up of the Board of Directors. This assessment includes issues of diversity of professional experience, viewpoint, age, skills (such as understanding of manufacturing, technology, finance and marketing), and international background. These factors, and any other qualifications considered useful by the Corporate Governance and Nominating Committee, are reviewed in the context of an assessment of the perceived needs of the Board of Directors at a particular point in time. As a result, the priorities and emphasis of the Corporate Governance and Nominating Committee and of the Board of Directors may change from time to time to take into account changes in business and other trends, and the portfolio of skills and experience of current and prospective Board of Directors members. Therefore, while focused on the achievement and the ability of potential candidates to make a positive contribution with respect to such factors, the Corporate Governance and Nominating Committee has not established any specific minimum criteria or qualifications that a nominee must possess.
Subject to the requirements under our bylaws with respect to elections to the Board of Directors prior to the second anniversary of the Merger (as described above), in selecting or recommending candidates for election to the Board of Directors, the Corporate Governance and Nominating Committee considers nominees recommended by directors, management and stockholders using the same criteria to evaluate all candidates. The Corporate Governance and Nominating Committee reviews each candidate’s qualifications, including whether a candidate possesses any of the specific qualities and skills desirable in certain members of the Board of Directors. Evaluations of candidates generally involve a review of background materials, internal discussions and interviews with selected candidates as appropriate. Upon the identification of a qualified candidate, the Corporate Governance and Nominating Committee would select, or recommend for consideration by the full Board of Directors, the nominee for the election of directors. The Corporate Governance and Nominating Committee may engage consultants or third party search firms to assist in identifying and evaluating potential nominees. To recommend a prospective nominee for the Corporate Governance and Nominating Committee’s consideration, stockholders should submit the candidate’s name and qualifications to our Corporate Secretary in writing to the following address: DASAN Zhone Solutions, Inc., Attention: Corporate Secretary, 7195 Oakport Street, Oakland, California 94621. When submitting candidates for nomination to be elected at the annual meeting of stockholders, stockholders must also follow the notice procedures and provide the information required by our bylaws. See “Board Structure” above for a discussion of requirements with respect to the composition of the Board of Directors prior to September 9, 2018.
Special Committee
Pursuant to the Merger Agreement, the Board of Directors has also established a Special Committee which is responsible for administering certain post-closing provisions of the Merger Agreement on our behalf. Michael Connors is currently the sole member of the Special Committee. The Special Committee did not hold any meetings during the year ended December 31, 2016.
Board Meetings and Director Attendance at Annual Meetings of Stockholders
During the year ended December 31, 2016, the Board of Directors of Legacy Zhone (prior to the Merger) and DZS
(following the Merger) held nine meetings. During this period, all of the directors attended or participated in at least 75% of the aggregate of the total number of meetings of the Board of Directors and the total number of meetings held by all committees of

the Board of Directors on which each such director served, in each case during the period for which they were directors of Legacy Zhone or DZS (as applicable). We endeavor to schedule our annual meeting of stockholders at a time and date to maximize attendance by directors taking into account the directors’ schedules. One of our directors attended last year’s annual meeting of stockholders.
Board of Directors' Role in Risk Oversight
The Board of Directors has an active role, as a whole and also at the committee level, in overseeing management of the company’s risks. The Compensation Committee is responsible for overseeing the management of risks relating to our executive compensation plans and arrangements. The Audit Committee oversees management of financial risks and discusses our policies with respect to risk assessment and risk management. The Corporate Governance and Nominating Committee manages risks associated with the independence of the Board of Directors and potential conflicts of interest.
The Board of Directors’ role in our risk oversight process includes receiving regular reports from members of senior management on areas of material risk to the company, including operational, financial, legal and regulatory, and strategic and reputational risks. The full Board of Directors (or the appropriate committee in the case of risks that are under the purview of a particular committee) receives these reports from the appropriate “risk owner” within the organization to enable it to understand our risk identification, risk management and risk mitigation strategies. When a committee receives the report, the Chairman of the relevant committee reports on the discussion to the full Board of Directors during the committee reports portion of the next Board of Directors meeting. This enables the Board of Directors and its committees to coordinate the risk oversight role, particularly with respect to risk interrelationships.
Communications with the Board of Directors
Any stockholder wishing to communicate with any of our directors regarding corporate matters may write to the director, c/o Corporate Secretary, DASAN Zhone Solutions, Inc., 7195 Oakport Street, Oakland, California 94621. The Corporate Secretary will forward these communications directly to the director(s). However, certain correspondence such as spam, junk mail, mass mailings, product complaints or inquiries, job inquiries, surveys, business solicitations or advertisements, or patently offensive or otherwise inappropriate material may be forwarded elsewhere within the company for review and possible response.
Section 16(a) Beneficial Ownership Reporting Compliance
Section 16(a) of the Exchange Act requires our directors, executive officers and holders of more than 10% of our common stock to file reports of ownership and changes in ownership with the SEC. These persons are required to furnish us with copies of all forms that they file. Based solely on our review of copies of these forms in our possession and in reliance upon written representations from our directors and executive officers, with the exception of one late Form 4 filing for Mr. Norrod on April 6, 2016, disclosing a single transaction in which Mr. Norrod was granted an option to purchase 250,000 shares of our common stock, we believe that all of our directors, executive officers and 10% stockholders complied with the Section 16(a) filing requirements during 2016.
Code of Conduct

We have adopted a Code of Conduct and Ethics applicable to all of our employees, directors and officers (including our principal executive officer, principal financial officer, principal accounting officer and controller). The Code of Conduct and Ethics is designed to deter wrongdoing and to promote honest and ethical conduct and compliance with applicable laws and regulations. The full text of our Code of Conduct and Ethics can be found in the "Corporate Governance" section ofis published on our website at http:https://dasanzhone.com/about/investor-relations/corporategovernance/.investor.dzsi.com/governance/governance-documents. We intend to disclose any future amendments to certain provisions of our Code of Conduct and Ethics, or waivers of such provisions granted to executive officers and directors, on our website within four business days following the date of such amendment or waiver.


ITEM 11.    

ITEM 11.

EXECUTIVE COMPENSATION

Compensation Discussion and Analysis
This compensation discussion and analysis summarizes our philosophy and objectives regarding

The information required by this item is incorporated herein by reference to the compensation of our executive officers and senior managers, including how we determine the elements and amounts of compensation. The Compensation Committeesections of the Board of Directors is responsible for determining, establishingProxy Statement entitled “Executive Compensation” and approving each element of compensation including salary and all bonus, incentive, equity and other compensation for the company’s executive officers and


senior managers. Our fiscal year 2016 named executive officers were: Il Yung Kim, Co-Chief Executive Officer; James Norrod, Co-Chief Executive Officer; and Kirk Misaka, Chief Financial Officer.
On September 9, 2016, effective as of the effective time of the Merger, Mr. Kim was appointed as Co-Chief Executive Officer of DZS and the title of Mr. Norrod was changed from President and Chief Executive Officer to Co-Chief Executive Officer. The appointments of Messrs. Kim and Norrod as Co-Chief Executive Officers in connection with the consummation of the Merger was required by the terms of the Merger Agreement, and each of our named executive officers entered into a one-year employment agreement with DZS to ensure a smooth transition and integration of the businesses of Legacy Zhone and DNS. On September 11, 2017, we announced management transition changes in connection with the first anniversary of the Merger and the progress successfully attained in the integration of the businesses of Legacy Zhone and DNS. Given the successful integration over the past year, we agreed with Messrs. Norrod and Misaka that they would step down from their management roles effective as of September 11, 2017. On September 11, 2017, Mr. Norrod also agreed to step down as a member of our Board of Directors. Mr. Misaka has agreed to remain in our employ as our Corporate Treasurer and Secretary for a transitional period to assist with the transition of his responsibilities. As part of this management transition, effective September 11, 2017, the Board of Directors appointed Il Yung Kim to serve as our President, Chief Executive Officer and Acting Chief Financial Officer.
Executive Summary
DZS is a global provider of network access solutions and communications equipment for service providers and enterprise networks. We operate in a highly competitive environment. The purpose of our executive compensation program is to attract, motivate and retain the executives who lead our business and align their interests with the long-term interests of our stockholders. The main elements of our compensation program are base salary, annual cash bonus and long-term equity incentive awards. We seek to pay our named executive officers fairly and link pay with performance.
The leadership and discipline of our management team heavily contributed to our performance over the last several years. Among other achievements, our named executive officers demonstrated solid execution of our business plan and the promotion of our strategic objectives, including the successful completion of the Merger. They continued to position us appropriately for growth, including by increasing revenues, expanding operating income as a percentage of revenue, and promoting a diverse customer and product mix in our businesses. Their focus on expense and working capital management increased our efficiency and improved our results. In addition, our managers promoted a philosophy of continuous improvement, leadership development among our senior managers and the ongoing importance of diversity and inclusion among our employee population. Our named executive officers have transitioned the company to expand and grow our business. Our fiscal 2016 accomplishments, guided by our named executive officers, illustrate this focus, which included, among other things, the following:
We completed the Merger and initiated the process of integrating the businesses of Legacy Zhone and DNS.
Our results from continuing operations in fiscal year 2016 reflected ongoing resiliency in our business as demonstrated in our carrier business while investing in the expansion of the enterprise business.
Overall, we demonstrated strong execution on strategic business objectives.
In determining the compensation of our named executive officers for 2016, the Compensation Committee evaluated our company’s overall performance and their individual contributions to that performance, including the factors described above.
Based on the comparable company information reviewed by the Compensation Committee each year in connection with its annual review of our executive compensation program, the Compensation Committee has historically targeted total direct compensation opportunities for the named executive officers at approximately the median of the competitive market data at time of hire and gradually made adjustments to levels above the median as the named executive officer demonstrates performance and assumes additional responsibilities over time. In keeping with our corporate objectives to conserve cash, none of Legacy Zhone's named executive officers received raises in base salary for 2015. Additionally, commencing in October 2015, a voluntary salary reduction was initiated by the executive officers pursuant to which our named executive officers’ base salaries were reduced by 20%. This salary reduction, initiated in 2015, remained in effect in 2016, but was discontinued on April 1, 2017 for our named executive officers. On that date, Mr. Kim’s and Mr. Norrod’s annual salary increased to $400,000 and Mr. Misaka’s annual salary increased to $365,000.
In light of our recent performance and the other factors described above, we believe our executive pay is reasonable, consistent with our performance and financial objectives and position.
Philosophy and Objectives

We strive to find the best talent, resources and infrastructure to serve our customers and strategically expand our product portfolio. Our goal is to attract and retain highly qualified executives to manage and oversee each of our business functions. We seek out individuals who we believe will be able to contribute to our business and our vision of future success, culture, principles and values, and who will promote the long-term interests and growth of our company. Our compensation philosophy is intended

to promote a team-oriented approach to performance as a portion of each named executive officer's incentive compensation is based on achievement against the same performance objectives as our broad-based incentive plan. In 2016, all employees were provided with the same health, welfare and retirement benefits as the executives.
Our compensation programs aim to achieve the following:
foster a goal-oriented, highly talented leadership team with a clear understanding of business objectives and shared corporate principles and values;
allocate our resources effectively in the development and selling of market-leading technology and products;
control costs in our business to maximize our efficiency;
ensure that the elements of compensation provided to our employees and executives are balanced, individually and in combination, and do not encourage excessive risk-taking;
reflect the competitive environment of our industry and our changing business needs;
enable us to attract, retain and drive a world-class leadership team; and
maintain pay parity and fair compensation practices across our organization.
In furtherance of these goals, our compensation programs are designed to:
be market competitive;
emphasize pay for performance;
share risks and rewards with our stockholders;
align the interests of our employees and executives with those of our stockholders; and
reflect our principles and values.
Our executive compensation program in 2016 consisted of the following components:
base salary;
potential cash bonuses;
equity-based incentives; and
health, welfare and retirement benefits.
The Compensation Committee’s goal is to set total compensation for our named executive officers at levels that are generally comparable to executives with similar roles and responsibilities at our peer group of companies, consistent with our goals, and appropriate in light of the company’s financial position and the executive’s experience level and expected contribution. The Compensation Committee typically targets total compensation for our named executive officers at or above the median of the market data from our peer group of companies, although actual compensation for an executive officer may be higher or lower than the targeted position depending on such factors as the individual performance of the named executive officer, our actual financial performance during the year, intensity of competition and general market conditions, the experience level, responsibilities and expected future contribution of the executive, and the importance of each position. The Compensation Committee does not rely solely upon rigid, pre-determined formulas for determining executive compensation and may consider any factor that is deemed pertinent to its executive compensation decisions.
Role of Chief Executive Officer and Chief Financial Officer in Determining Executive Compensation and Benchmarking Data
We generally have followed a consistent process over the years for determining compensation for our named executive officers. At the conclusion of each fiscal year, our Chief Executive Officer (or Co-Chief Executive Officers, as applicable) and Chief Financial Officer with the assistance of the Human Resources Department, consider the compensation of executives in similar positions to theirs at our peer group, which is discussed below, using information gathered from proxy statements and other SEC filings. Our Chief Executive Officer (or Co-Chief Executive Officers, as applicable) and Chief Financial Officer then provide recommendations to the Compensation Committee for adjustments to their base salaries, bonus opportunities and equity levels.

Our Chief Executive Officer (or Co-Chief Executive Officers, as applicable) and our Chief Financial Officer attend some of the Compensation Committee meetings, but the Compensation Committee also regularly holds executive sessions not attended by any members of management or non-independent directors. The Compensation Committee discusses our Chief Executive Officers and Chief Financial Officers compensation package with them, but makes decisions with respect to their compensation without them present. The Compensation Committee has the ultimate authority to make decisions with respect to the compensation of our named executive officers, but may, if it chooses, delegate any of its responsibilities to subcommittees. The

Compensation Committee has delegated to Mr. Kim the authority to grant long-term incentive awards to employees below the level of executive officer under guidelines set by the Compensation Committee. The Compensation Committee also has authorized Mr. Kim to make salary adjustments and short-term incentive decisions for all employees other than officers under guidelines approved by the Compensation Committee. The Compensation Committee has not delegated any of its authority with respect to the compensation of executive officers. Although neither the Compensation Committee nor the Board of Directors is required to ratify the actions of Mr. Kim with regard to the authority delegated to him, as a matter of good corporate practice, Mr. Kim periodically provides a report to the Board of Directors regarding grants of long-term incentive awards to employees authorized by him. The Compensation Committee reviews this information in light of its own current experience, access to compensation information and experience at other companies and on other boards. The Compensation Committee historically has given considerable weight to management recommendations based on their direct knowledge of their performance and contributions to the company. The Compensation Committee considers these factors, as well as any other factors it may deem relevant to its executive compensation determinations, and sets the compensation for the company’s executive officers.
In determining the compensation of the named executive officers for fiscal year 2016, the Compensation Committee considered external market data and publicly available information from a peer group of comparable companies compiled as described above. This market data focused on, among other things, the cash components of compensation for executives.
The 2016 peer group used for purposes of determining 2016 compensation for the named executive officers represents companies within the telecommunications industry. The peer group was chosen primarily because they are our primary business competitors and because we consider the scope and complexity of their business operations to be closely related to ours. Our 2016 peer group was established by the Compensation Committee based on recommendations made by management.
For fiscal year 2016, our peer group was comprised of the following companies:
Adtran, Inc.
Brocade Communications Systems, Inc.
Calix, Inc.
Ciena Corporation
F5 Networks, Inc.
Harmonic, Inc.
Infinera Corporation
IXIA
Juniper Networks, Inc.
Sonus Networks, Inc.
Westell Technologies, Inc.
Role of Compensation Consultants
In performing its duties, the Compensation Committee may obtain input, as it deems necessary, from outside professional consulting firms retained directly by the Compensation Committee or through the assistance of the Human Resources Department. The Compensation Committee did not retain an outside professional consulting firm to conduct a competitive review and assessment of the company’s executive compensation program for the 2016 fiscal year.
Elements of Compensation Allocation
The Compensation Committee believes that each element of our compensation program is essential to attracting and retaining experienced and motivated executive officers who are able to successfully manage our operations, strategic direction and financial performance, particularly given the intensely competitive and rapidly changing telecommunications industry in which we operate. In evaluating the overall mix of compensation for named executive officers, the Compensation Committee typically does not rely on pre-determined formulas for weighting different elements of compensation for allocating between long-term and short-term compensation, but instead strives to develop comprehensive compensation packages that emphasize attainment of our short-term and long-term objectives and are reflective of our financial position and the executive’s abilities, experience level and contributions.


Base Salaries
In general, base salaries for employees, including named executive officers, are established based on the scope of their responsibilities, individual contribution, prior experience, sustained performance and anticipated level of difficulty of replacing the employee with someone of comparable experience and skill. Decisions regarding salary increases take into account the executive’s current salary and the amounts paid to the named executive officer’s peers outside the company. In addition to considering the competitive pay practices of our peer group of companies, we also consider the amounts paid to a named executive officer’s peers internally by conducting an internal pay equity analysis which compares the pay of each named executive officer to other members of the management team. Base salaries are reviewed periodically, but are not automatically increased if the Compensation Committee believes that other elements of compensation are more appropriate in light of our stated objectives. This strategy is consistent with our intent of offering compensation that is contingent on the achievement of performance objectives. In keeping with our corporate objectives to conserve cash, none of our named executive officers received raises in base salary for 2016. Additionally, commencing in October 2015, a voluntary salary reduction was initiated by the named executive officers. For 2015, Legacy Zhone's named executive officers’ base salaries were reduced by 20%. All other exempt employees company-wide incurred a base salary reduction of 10%. This salary reduction initiated in 2015 was reinstated in July 2016 and remained in effect in 2016 for Messrs. Norrod, Kim and Misaka. The salary reduction was discontinued on April 1, 2017. On that date, Mr. Kim’s and Mr. Norrod’s annual salary increased to $400,000 and Mr. Misaka’s annual salary increased to $365,000.

Annual Incentives
In addition to the named executive officers’ base salaries, they are eligible to participate in a performance-based annual bonus program, to be earned and paid quarterly in equal installments. Mr. Kim’s target quarterly bonus is $100,000. Mr. Norrod’s target quarterly bonus was $100,000. Mr. Misaka’s target quarterly bonus was $50,000. Their actual bonus is intended to be based upon our Board of Directors’ evaluation of our overall results compared to the annual budget approved by our Board of Directors for the following criteria: revenues; pre-tax income from operations (excluding any non-recurring and/or extraordinary charges or credits); free cash flow (excluding any equity and/or debt changes); and other non-financial subjective criteria determined by the Board of Directors. For 2016, no specific quarterly performance objectives were established for the named executive officers’ bonus opportunities. Instead, the quarterly bonus plan achievement and payout was determined by our Board of Directors based on their subjective evaluation of our overall performance relative to the operating plan and of the named executive officers’ individual performance. Our Board of Directors determined none of the named executive officers were entitled to receive a bonus payment in 2016 under this program. Mr. Kim did not receive a bonus for 2016 due to the fact his employment commenced upon consummation of the Merger in September 2016.
Transaction Bonuses
On September 9, 2016, in connection with the consummation of the Merger, we entered into transaction bonus agreements with each of Messrs. Norrod and Misaka pursuant to which these executives were entitled to receive a one-time cash bonus in connection with the successful consummation of the Merger. The amount of the cash bonus payable under the transaction bonus agreements was $1,000,000 for Mr. Norrod and $500,000 for Mr. Misaka. Mr. Norrod was paid $500,000 in October 2016 and $500,000 in January 2017. Mr. Misaka was paid $500,000 in March 2017.
Long-Term Equity Incentives
The goal of our long-term, equity-based incentive awards is to align the interests of employees with stockholders and to provide each employee with an incentive to manage our company from the perspective of an owner with an equity stake in the business. Because vesting is based on continued employment, our equity-based incentives also facilitate the retention of employees through the term of the awards. In determining the size of the long-term equity incentives to be awarded to employees, we take into account a number of internal factors, such as the relative job scope, individual performance history, prior contributions, the size of prior grants and competitive market data for our peer group of companies. Based upon these factors, the Compensation Committee determines the size of the long-term equity incentives at levels it considers appropriate to create a meaningful opportunity for reward predicated on the creation of long-term stockholder value. The Compensation Committee does not apply any set formula or consider any specific weighting of these factors in setting the awards for a year. Rather, the level of awards is determined solely in the discretion of the Compensation Committee, taking into account those factors and the recommendations of management.
To reward and retain employees in a manner that best aligns employees’ interests with stockholders’ interests, we use stock options as the primary incentive vehicle for long-term compensation opportunities. We believe that stock options are an effective tool for meeting our compensation goal of increasing long-term stockholder value by tying the value of the stock options to our future performance. Because employees are able to profit from stock options only if our stock price increases in value over the stock option’s exercise price, we believe the options provide effective incentives to employees to achieve increases in the value of

our stock. To the extent they are awarded in any given year, annual grants of options have historically been approved by the Board of Directors at its regularly scheduled meeting in August and had a grant date effective as of the first day of the September following the Board of Director’s meeting. While historically the vast majority of stock option awards to our employees have been made pursuant to our annual grant program, the Compensation Committee retains discretion to make stock option awards to employees at other times, including in connection with the hiring of an employee, the promotion of an employee, to reward an employee, for retention purposes or for other circumstances recommended by management or the Compensation Committee. The exercise price of any such grant is the fair market value of our common stock on the grant date. In addition, our stock option programs are broad-based.

In 2016, in lieu of their typical annual awards, the named executive officers were granted stock options in connection with the successful completion of the Merger. These grants are described in the table under "2016 Grants of Plan-Based Awards" below. The Compensation Committee has not granted, but they may in the future grant, equity compensation awards to employees in anticipation of the release of material nonpublic information that is likely to result in changes to the price of our common stock, such as a significant positive or negative earnings announcement. Similarly, the Compensation Committee has not timed, nor does it intend in the future to time, the release of material nonpublic information based on equity award grant dates.
Retirement Savings
Our employees are eligible to participate in our 401(k) plan. Each employee may make before-tax contributions of up to 75% of their base salary, up to the limits imposed by the Code. We provide this plan to help our employees save some amount of their cash compensation for retirement in a tax efficient manner. We currently do not provide a matching contribution under our 401(k) plan, nor do we offer other retirement benefits.
Health and Welfare Benefits
The establishment of competitive benefit packages for our employees is an important factor in attracting and retaining highly qualified personnel. Our named executive officers are eligible to participate in all of our employee benefit plans, such as medical, dental, vision, group life and disability insurance, in each case on the same basis as other employees. We believe that these health and welfare benefits help ensure that the company has a productive and focused workforce.
Tax Deductibility of Executive Compensation
Limitations on the deductibility of compensation may occur under Section 162(m) of the Code, which generally limits the tax deductibility of compensation paid by a public company to its chief executive officer and certain other highly compensated executive officers to $1 million, unless such compensation is performance based and certain specific and detailed criteria are satisfied. Tax deductibility is not a primary objective of our compensation programs, particularly in light of our company’s substantial net operating losses. We believe that achieving our compensation objectives set forth above is more important than the benefit of tax deductibility, and we reserve the right to maintain flexibility in how we compensate our executive officers that may result in limiting the deductibility of amounts of compensation from time to time.

Relationship Between Compensation and Risk
In early 2017, management assessed our compensation policies and programs for all employees for purposes of determining the relationship of such policies and programs and the enterprise risks faced by us. After that assessment, management determined that none of our compensation policies or programs create risks that are reasonably likely to have a material adverse effect on us. Management reported the results of its assessment to the Compensation Committee.
Compensation Committee Report
The Compensation Committee has reviewed and discussed the Compensation Discussion and Analysis with management. Based on its review and discussions with management, the Compensation Committee recommended to the Board of Directors that the Compensation Discussion and Analysis be included in this report.
Respectfully Submitted by the Compensation Committee
Min Woo Nam (Chairman)
Michael Connors
Sung-Bin Park

“Director Compensation.”

* The information contained in this Compensation Committee Report shall not be deemed to be “soliciting material,” to be “filed” with the SEC or be subject to Regulation 14A or Regulation 14C or to the liabilities of Section 18 of the Exchange Act,

and shall not be deemed to be incorporated by reference into any filing of DZS, except to the extent that DZS specifically incorporates it by reference into a document filed under the Securities Act of 1933 or the Exchange Act.

Compensation Committee Interlocks and Insider Participation
The members of the Compensation Committee for the 2016 fiscal year were C. Richard Kramlich and Robert Dahl until the consummation of the Merger on September 9, 2016. Effective as of September 9, 2016, (1) the size of the Compensation Committee was increased to three members, (2) Mr. Dahl resigned from his position as a director and member of the Compensation Committee, (3) Min Woo Nam and Sung-Bin Park were appointed to fill the resulting vacancies on the committee and (4) Mr. Nam was appointed Chair of the Compensation Committee. All members of the Compensation Committee during 2016 other than Mr. Nam were independent directors, and none of them were our officers or employees or former officers or employees. During 2016, none of our executive officers served on the compensation committee (or equivalent), or the board of directors, of another entity whose executive officer(s) served on the Compensation Committee or Board of Directors.
Summary Compensation Table
The following table sets forth the compensation earned during the years ended December 31, 2016, 2015 and 2014 by the individuals serving as our Chief Executive Officer (or our Co-Chief Executive Officers, as applicable) and our Chief Financial Officer during such years. We refer to these executive officers throughout this report as our “named executive officers.”
Name and Principal Position Year Salary ($) 
Bonus
($) (1)
 
Stock
Awards($)
 
Option
Awards
($) (2)
 Non - Equity
Incentive
Plan
Compensation ($)
 Change in Pension Value and Non- qualified Deferred Compensation Earnings($) 
All
Other
Compensation ($) (3)
  Total ($)
Il Yung Kim 2016 113,711
(5)
 
 739,907
     33,095
(6) 886,713
President, Chief Executive Officer and Acting Chief Financial Officer (4)                   
James Norrod 2016 320,000
 1,000,000
 
 707,535
 
 
 71,380
(7) 2,098,915
Former Co-Chief Executive Officer (4) 2015 396,923
 100,000
 
 
 
 
 86,248
(8) 583,171
 2014 172,306
 
 
 2,826,383
 
 
 49,738
  3,048,427
Kirk Misaka 2016 292,000
 500,000
 
 411,850
 
 
 20,954
(9) 1,224,804
Corporate Treasurer and Secretary and Former Chief Financial Officer (4) 2015 362,192
 267,237
 
 
 
 
 17,631
(10) 647,060
2014 365,000
 
 
 
 
 
 15,039
  380,039
(1)Amounts reflect, for 2015, discretionary bonuses and, for 2016, Merger consummation bonuses paid to our named executive officers. On September 9, 2016, in connection with the consummation of the Merger, we entered into transaction bonus agreements with each of Messrs. Norrod and Misaka pursuant to which these executives were entitled to receive a one-time cash bonus in connection with the successful consummation of the Merger. The amount of the cash bonus payable under the transaction bonus agreements was $1,000,000 for Mr. Norrod and $500,000 for Mr. Misaka. Mr. Norrod was paid $500,000 in October 2016 and $500,000 in January 2017. Mr. Misaka was paid $500,000 in March 2017.
(2)
This column represents the grant date fair value of the option awards granted during the applicable fiscal year to our named executive officers, calculated in accordance with Accounting Standards Codification Topic 718, Compensation-Stock Compensation, or ASC Topic 718. Pursuant to SEC rules, the amounts shown exclude the impact of estimated forfeitures related to service-based vesting conditions. For additional information on the valuation assumptions used in the calculation of these amounts, refer to Note 9 to the consolidated financial statements set forth in Part II, Item 8 of this report.
(3)Unless otherwise provided, amounts reflected in this column represent medical benefit premiums, contributions to health savings accounts and life insurance premiums paid by us on behalf of the executive for the applicable fiscal year.
(4)As part of the management transition in connection with the first anniversary of the Merger, in September 2017, Messrs. Norrod and Misaka stepped down from their roles as Co-Chief Executive Officer and Chief Financial Officer, respectively, and Mr. Kim was appointed President, Chief Executive Officer and Acting Chief Financial Officer. Mr.

Misaka has agreed to remain in our employ as Corporate Treasurer and Secretary for a transitional period to assist with the transition of his responsibilities.

(5)For Mr. Kim, for the period from September 9, 2016 through December 31, 2016, includes (a) $32,000 paid in U.S. Dollars and (b) $83,711 paid in Korean Won (with the KRW 95,640,000 paid to Mr. Kim converted to U.S. Dollars using an average exchange rate of 1,155 KRW:1.00 USD (which represents the average of the actual exchange rates on the date of each payment to Mr. Kim for the period from September 23, 2016 through December 23, 2016)).
(6)For Mr. Kim, includes (a) $16,480 in housing allowance, (b) $677 in medical insurance paid by us on Mr. Kim’s behalf, (c) $78 in other insurance premiums (including dental, vision, life insurance, short and long term disability) paid by us on his behalf and (d) $15,860 in fees to obtain immigration visas paid by us on his behalf. DZS entered into a lease agreement on October 10, 2016 for a period on one year for a home in Oakland, California in which Mr. Kim resides while conducting his duties in Oakland, California. The lease expense is $6,200 per month, including utilities and expenses. Mr. Kim pays $200 per month to DZS for the difference between his housing allowance and the lease cost per the terms of his employment agreement. No payments were made to Mr. Kim in 2016 for his relocation from Korea to Oakland, California.
(7)For Mr. Norrod, includes (a) $24,877 for reimbursement of housing expenses in Oakland, California, (b) $27,419 for reimbursement of airfare for travel home from the San Francisco Bay Area to visit his family, (c) $17,606 in medical insurance premiums paid by us on his behalf and (d) $1,478 in other insurance premiums (including dental, vision, life insurance, short and long term disability) paid by us on his behalf.
(8)For Mr. Norrod, includes (a) $46,021 for reimbursement of housing expenses in Oakland, California, (b) $22,245 for reimbursement of airfare for travel home from the San Francisco Bay Area to visit his family, (c) $15,017 in medical insurance premiums paid by us on his behalf, (d) $1,465 in other insurance premiums including dental, vision, life insurance, short and long term disability paid by us on his behalf.
(9)For Mr. Misaka, includes (a) $15,923 in medical insurance premiums paid by us on his behalf, (b) $2,700 in contributions made to his health savings account and (c) $2,331 in other insurance premiums (including dental, vision, life insurance, short and long term disability) paid by us on his behalf.
(10)For Mr. Misaka, includes (a) $13,585 in medical insurance premiums paid by us on his behalf, (b) $1,700 in contributions made to his health savings account and (c) $2,346 in other insurance premiums (including dental, vision, life insurance, short and long term disability) paid by us on his behalf.
2016 Grants of Plan-Based Awards

The following table sets forth summary information regarding grants of plan-based awards made to our named executive officers during the year ended December 31, 2016.
 Name Grant Date 
Estimated
Possible
Payouts
under
Non-Equity
Incentive Plan
Awards Target ($)

 
All Other
Stock
Awards:
Number of
Shares of Stock
or Units
(#)
 All Other
Option
Awards:
Number  of
Securities Underlying Options
(#) (1)
 Exercise or base Price of Option Awards ($/Sh) 
Grant Date
Fair Value
of Stock
 and Option Awards
($)
   
 
 Il Yung Kim 9/9/2016 400,000
 
 200,000
 5.95
 $739,907
 James Norrod 9/9/2016 400,000
 
 200,000
 5.95
 $707,535
 Kirk Misaka 9/9/2016 200,000
 
 100,000
 5.95
 $411,850
(1) Amounts presented have been adjusted to reflect the one-for-five reverse stock split effected on February 28, 2017. The options granted to Mr. Kim have a term of ten years from the date of grant and vest over four years with the first 25% vesting on September 9, 2017 and the remaining shares vesting in 36 equal monthly installments over the course of the remaining three years thereafter. The options granted to Messrs. Norrod and Misaka have a term of ten years from the date of grant and vest and become exercisable in 48 equal monthly installments over the course of four years from the date of grant. The vesting of the stock options held by our named executive officers may accelerate under certain circumstances as described below under "Potential Payments Upon Termination."
Outstanding Equity Awards at 2016 Fiscal Year End
The following lists all outstanding equity awards held by our named executive officers as of December 31, 2016.

  Option Awards (1)
Name 
Number of
Securities
Underlying
Unexercised
Options (#)
Exercisable
(2) 
Number of
Securities
Underlying
Unexercised
Options (#)
Unexercisable
(2) 
Equity
 Incentive
Plan Awards:
Number of
Securities
Underlying
Unexercised
Unearned
Options (#)
 
Option
Exercise
Price ($)(2)
 
Option
Expiration
Date
Il Yung Kim 
  200,000
(3)   $5.95
 9/9/2027
James Norrod 12,499
  187,500
  
 5.95
 9/9/2027
Kirk Misaka 17,999
  
  
 6.16
 9/1/2017
  17,999
  
  
 7.55
 9/1/2018
  6,249
  93,751
  
 5.95
 9/9/2027
(1)Except as otherwise described, all options have a term of ten years from the date of grant and vest and become exercisable in 48 equal monthly installments over the course of four years from the date of grant. The vesting of the stock options held by our named executive officers may accelerate under certain circumstances as described below under “Potential Payments Upon Termination.”
(2)Amounts presented have been adjusted to reflect the one-for-five reverse stock split effected on February 28, 2017.
(3)The options have a term of ten years from the date of grant and vest over four years with the first 25% vesting on September 9, 2017 and the remaining shares vesting in 36 equal monthly installments over the course of the remaining three years thereafter.

Option Exercises and Stock Vested in 2016

None of our named executive officers exercised options or had stock awards vest in 2016.
Pension Benefits
None of our named executive officers participates in or has account balances in qualified or non-qualified defined benefit plans sponsored by us.
Nonqualified Deferred Compensation
None of our named executive officers participates in or has account balances in qualified or non-qualified contribution plans or other deferred compensation plans maintained by us.
Potential Payments Upon Termination
We have employment, severance, change of control or release agreements with certain of the named executive officers, as described below.
Employment Agreement with Il Yung Kim
In September 2016, we entered into an employment agreement with Mr. Kim. This agreement had an initial term expiring on September 9, 2017 and was automatically extended for an additional year on such date and may be automatically extended on each subsequent anniversary of the initial expiration date. Prior to the management transition in September 2017, Mr. Kim served as Co-Chief Executive Officer. As part of this management transition, effective September 11, 2017, the Board of Directors appointed Mr. Kim to serve as our President, Chief Executive Officer and Acting Chief Financial Officer.
During the term, Mr. Kim will perform the responsibilities as President, Chief Executive Officer and Acting Chief Financial Officer, reporting to the Board of Directors of the company, with such duties and responsibilities as are commensurate with such positions. Under the employment agreement, Mr. Kim’s annual salary was initially $320,000, which automatically increased to $400,000 on April 1, 2017, and will be reviewed on at least an annual basis by the Compensation Committee. In addition, Mr. Kim is eligible to participate in a performance-based annual bonus program, to be earned and paid quarterly in equal installments. Mr. Kim’s target bonus is equal to 100% of his annual salary. Mr. Kim is entitled to $30,000 in relocation assistance to relocate his principal place of residence to the San Francisco Bay Area. Mr. Kim will also be reimbursed a maximum of $6,000 per month for housing allowance. Mr. Kim is also eligible to participate in all health benefits, insurance programs, pension and retirement plans and other employee benefit and compensation arrangements generally available to our other officers.

Under Mr. Kim’s employment agreement, Mr. Kim will receive certain compensation in the event that his employment is terminated by us for any reason other than by reason of Mr. Kim’s death, disability, his termination for “cause” (as defined below) or expiration of the term of his employment agreement, or if Mr. Kim resigns for “good reason” (as defined below) (which we refer to as a Qualifying Termination), Mr. Kim will be entitled to receive a lump sum payment equal to his annual salary as in effect immediately prior to the date of termination (or, if greater, $400,000). If termination occurs after the first anniversary of his employment agreement the lump sum payment will be reduced to 50% of his annual salary (or, if greater, $200,000). In addition, in the event of Mr. Kim’s Qualifying Termination following a change in control (as defined in our 2001 Plan), the vesting and exercisability of his stock options will accelerate on the date of termination. In addition, Mr. Kim is eligible for up to $30,000 reimbursement of expenses for relocation to his new principal place of residence.
Assuming a hypothetical Qualifying Termination of Mr. Kim’s employment on December 31, 2016, the last day of our 2016 fiscal year, we would have been obligated to pay Mr. Kim a lump sum payment of $400,000. If a change in control had occurred on December 31, 2016 and, in connection with such change in control, Mr. Kim experienced a Qualifying Termination, we would have been obligated to pay Mr. Kim a lump sum payment of $400,000, up to $30,000 reimbursement of expenses for relocation to his new principal place of residence, and the vesting and exercisability of his stock options would have accelerated on the date of termination, which stock options would have had no value as of December 31, 2016, due to the fact that the closing price per share of our common stock on December 30, 2016 (the last trading day of 2016) was $5.00, which was lower than the exercise price per share of Mr. Kim’s stock options.
Employment Agreement with James Norrod
In September 2016, we entered into an amended and restated employment agreement with Mr. Norrod. The amended and restated agreement replaced the previous employment agreement dated July 14, 2014 with Mr. Norrod.
Mr. Norrod's employment agreement had an initial term expiring on September 9, 2017 and was eligible for automatic extension for an additional year and further extension on each subsequent anniversary of the initial expiration date. Pursuant to the management transition in September 2017, Mr. Norrod stepped down from his position as Co-Chief Executive Officer and a director of the company effective September 11, 2017. Mr. Norrod entered into a release agreement in connection with his resignation from his management roles and employment with the company, which is described below under "Release Agreements with Messrs. Norrod and Misaka."
During the term of his employment agreement, Mr. Norrod performed his responsibilities as Co-Chief Executive Officer, reporting to the Board of Directors of the company, with such duties and responsibilities as were commensurate with the position. Under the employment agreement, Mr. Norrod’s annual salary was initially $320,000, which automatically increased to $400,000 on April 1, 2017, and was reviewed on at least an annual basis by the Compensation Committee. In addition, Mr. Norrod was eligible to participate in a performance-based annual bonus program, to be earned and paid quarterly in equal installments. Mr. Norrod’s target bonus was equal to 100% of his annual salary. Mr. Norrod was also eligible to participate in all health benefits, insurance programs, pension and retirement plans and other employee benefit and compensation arrangements generally available to our other officers.
Under Mr. Norrod’s amended and restated employment agreement, Mr. Norrod was eligible to receive certain compensation in the event that his employment was terminated by us for any reason other than by reason of Mr. Norrod’s death, disability, his termination for “cause” (as defined below) or expiration of the term of his employment agreement, or if Mr. Norrod resigned for “good reason” (as defined below) (which we refer to as a Qualifying Termination), Mr. Norrod was entitled to receive a lump sum payment equal to his annual salary as in effect immediately prior to the date of termination (or, if greater, $400,000). If termination occurred after the first anniversary of his employment agreement, the lump sum payment would be reduced to 50% of his annual salary (or, if greater, $200,000). In addition, in the event of Mr. Norrod’s Qualifying Termination following a change in control (as defined in our Amended and Restated 2001 Stock Incentive Plan), the vesting and exercisability of his stock options would have accelerated on the date of termination.
Assuming a hypothetical Qualifying Termination of Mr. Norrod’s employment on December 31, 2016, the last day of our 2016 fiscal year, we would have been obligated to pay Mr. Norrod a lump sum payment of $400,000. If a change in control had occurred on December 31, 2016 and, in connection with such change in control, Mr. Norrod experienced a Qualifying Termination, we would have been obligated to pay Mr. Norrod a lump sum payment of $400,000 and the vesting and exercisability of his stock options would have accelerated on the date of termination, which stock options would have had no value as of December 31, 2016 due to the fact that the closing price per share of our common stock on December 30, 2016 (the last trading day of 2016) was $5.00, which was lower than the exercise price per share of Mr. Norrod’s stock options.
Employment Agreement with Kirk Misaka

In September 2016, we entered into an employment agreement with Mr. Misaka. This agreement had an initial term expiring on September 9, 2017 and was eligible for automatic extension for an additional year and further extension on each subsequent anniversary of the initial expiration date. Pursuant to the management transition in September 2017, Mr. Misaka stepped down from his position as Chief Financial Officer of the company effective September 11, 2017. Mr. Misaka agreed to remain in the employ of the company as our Corporate Treasurer and Secretary for a transitional period to assist with the transition of his responsibilities, with the same base salary as was in effect prior to the management transition, and continued vesting of his outstanding stock options during the term of his employment, although his continued employment will no longer be governed by the terms of his employment agreement, which was terminated effective September 11, 2017. Mr. Misaka entered into a release agreement in connection with his resignation from his management role, which is described below under "Release Agreements with Messrs. Norrod and Misaka."
During the term of his employment agreement, Mr. Misaka performed the responsibilities as Chief Financial Officer, reporting to our Chief Executive Officer (or the Co-Chief Executive Officers, as applicable), with such duties and responsibilities as were commensurate with the position. Under the employment agreement, Mr. Misaka’s annual salary was initially $292,000, which automatically increased to $365,000 on April 1, 2017, and was reviewed on at least an annual basis by the Compensation Committee. In addition, Mr. Misaka was eligible to participate in a performance-based annual bonus program, to be earned and paid quarterly in equal installments. Mr. Misaka’s target bonus was equal to 100% of his annual salary. Mr. Misaka was also eligible to participate in all health benefits, insurance programs, pension and retirement plans and other employee benefit and compensation arrangements generally available to our other officers.
Under Mr. Misaka’s employment agreement, Mr. Misaka was eligible to receive certain compensation in the event that his employment was terminated by us for any reason other than by reason of Mr. Misaka’s death, disability, his termination for “cause” (as defined below) or expiration of the term of his employment agreement, or if Mr. Misaka resigned for “good reason” (as defined below) (which we refer to as a Qualifying Termination), Mr. Misaka was entitled to receive a lump sum payment equal to his annual salary as in effect immediately prior to the date of termination (or, if greater, $365,000). If termination occurred after the first anniversary of his employment agreement, the lump sum payment would be reduced to 50% of his annual salary (or, if greater, $182,500). In addition, in the event of Mr. Misaka’s Qualifying Termination following a change in control (as defined in our Amended and Restated 2001 Stock Incentive Plan), the vesting and exercisability of his stock options would have accelerated on the date of termination. The employment agreement termination of benefits replaced the severance agreement between the company and Mr. Misaka dated August 2012.
Assuming a hypothetical Qualifying Termination of Mr. Misaka’s employment on December 31, 2016, the last day of our 2016 fiscal year, we would have been obligated to pay Mr. Misaka a lump sum payment of $365,000. If a change in control had occurred on December 31, 2016 and, in connection with such change in control, Mr. Misaka experienced a Qualifying Termination, we would have been obligated to pay Mr. Misaka a lump sum payment of $365,000 and the vesting and exercisability of his stock options would have accelerated on the date of termination, which stock options would have had no value as of December 31, 2016 due to the fact that the closing price per share of our common stock on December 30, 2016 (the last trading day of 2016) was $5.00, which was lower than the exercise price per share of Mr. Misaka’s stock options.
Defined Terms in Employment Agreements
For purposes of the employment agreements, “cause” is generally defined to include: (1) the executive’s willful or continued failure to substantially perform his duties with the company, or any failure to carry out, or comply with, in any material respect any lawful and reasonable directive of the Board of Directors consistent with the terms of his employment agreement, which failure continues for 15 days following the executive’s receipt of written notice from the Board of Directors, (2) the executive’s conviction of, guilty plea to, or entry of a nolo contendere plea to a felony or a crime of moral turpitude or commission of an act of fraud, embezzlement or misappropriation against us, (3) the executive’s willful or reckless misconduct that has caused or is reasonably likely to cause demonstrable and material financial injury to the company, or (4) the executive’s willful and material breach of his employment agreement, which breach remains uncured for 15 days following his receipt of written notice by the Board of Directors.
For purposes of the employment agreements, “good reason” is generally defined to include the occurrence of any of the following events without his consent: (1) a material diminution in the executive’s base compensation, (2) a material diminution in the executive’s authority, duties or responsibilities, (3) a material change in the geographic location at which the executive must perform his duties, or (4) any other action or inaction that constitutes a material breach by the company of its obligations under the employment agreement.

Release Agreements with Messrs. Norrod and Misaka
In connection with their resignations from their management roles, and Mr. Norrod’s termination of employment, Messrs. Norrod and Misaka entered into release agreements with the company. Pursuant to his release agreement, Mr. Norrod is entitled to receive a lump sum cash payment of $300,000, continued health benefits at our expense for a period of six months following his termination of employment and an extension of the period of time to exercise his vested stock options through September 11, 2018. Pursuant to his release agreement, Mr. Misaka is entitled to receive a lump sum cash payment of $232,500 and an extension of the period of time to exercise his vested stock options through September 11, 2018.
Director Compensation
Directors who are employees of the company, such as Il Yung Kim, do not receive any additional compensation for their services as directors.
On September 9, 2016, our Board of Directors adopted a new compensation program for non-employee directors. Under our new non-employee director compensation program, each non-employee director is eligible to receive an annual cash retainer of $20,000, but may elect to receive an equivalent amount of fully vested shares of our common stock, in lieu of the cash retainer, based on the fair market value of the shares on the date the cash retainer would otherwise be paid. To align the interests of directors with the long-term interests of stockholders, each non-employee director is also entitled to receive an annual equity grant in the form of a stock option to purchase 10,000 shares at an exercise price equal to the fair market value of our common stock on the date of grant. In lieu of this stock option, each non-employee director may elect to receive the annual equity grant in the form of 3,000 restricted stock units. The annual equity grant of stock options vests in 48 equal monthly installments over the course of four years. The annual equity grant of restricted stock units vests in four equal annual installments over the course of four years. In addition, the chair of the Audit Committee receives a $4,000 cash payment per committee meeting attended, and each of the other committee members receives a $2,000 cash payment per committee meeting attended. Non-employee directors are entitled to reimbursement of reasonable out-of-pocket expenses incurred attending Board and committee meetings, and in connection with Board related activities. The following table sets forth the compensation earned during the year ended December 31, 2016 by each of our non-employee directors.

Name Fees Earned or
Paid in Cash  ($) (1)
 
Stock
Awards
($) (2)
 
Option
Awards
 ($) (3)
 Non-Equity
Incentive
Plan
Compensation ($)
 Change in Pension Value and Non- Qualified Deferred Compensation Earnings ($) All
Other
Compensation ($) (4)
 Total ($)
Michael Connors (5) 30,000
 
 42,501
 
 
 
 72,501
Robert Dahl (6) 12,000
 
 
 
 
 
 12,000
Morteza Ejabat (7) 
 640,000
 
 
 
 
 640,000
Seong Gyun Kim (8) 24,000
 17,850
 
 
 
 
 41,850
C. Richard Kramlich (9) 8,000
 17,850
 
 
 
 
 25,850
Min Woo Nam (10) 20,000
 
 37,822
 
 
 
 57,822
Sung-Bin Park (11) 22,000
 
 37,822
 
 
 
 59,822
Mahvash Yazdi (12) 20,000
 
 
 
 
 
 20,000
(1)As described above, a director may elect to receive an equivalent amount of fully vested shares of our common stock in lieu of an annual cash retainer. The amounts in this column include the annual retainer and committee fees paid in cash. No fully vested shares of our common stock were issued to any non-employee directors in lieu of their regular cash retainer during 2016.
(2)This column represents the grant date fair value of the equity awards granted on September 9, 2016 to each of the non-employee directors who elected to receive their annual equity grant in the form of restricted stock units during 2016 or, for Mr. Ejabat, the shares of our common stock issued to him in January 2016 as consideration for transition services, as calculated in accordance with ASC Topic 718. For these awards, the grant date fair value is calculated using the closing price of our common stock on the grant date as if these awards were vested and issued on the grant date. Pursuant to SEC rules, the amounts shown exclude the impact of estimated forfeitures related to service-based vesting conditions. For additional information on the valuation assumptions used in the calculation of these amounts, refer to Note 9 to the consolidated financial statements set forth in Part II, Item 8 of this report. Amounts presented have been adjusted to reflect the one-for-five reverse stock split effected on February 28, 2017.
(3)This column represents the grant date fair value of the option awards granted on September 9, 2016 to each of the non-employee directors who elected to receive their annual equity grant in the form of stock options during 2016, as calculated

in accordance with ASC Topic 718. Pursuant to SEC rules, the amounts shown exclude the impact of estimated forfeitures related to service-based vesting conditions. For additional information on the valuation assumptions used in the calculation of these amounts, refer to Note 9 to the consolidated financial statements set forth in Part II, Item 8 of this report. Amounts presented have been adjusted to reflect the one-for-five reverse stock split effected on February 28, 2017.
(4)The aggregate amount of perquisites and other personal benefits, securities or property provided to each non-employee director, valued on the basis of aggregate incremental cost to the company, was less than $10,000.
(5)As of December 31, 2016, Dr. Connors had a total of 72,000 options and held no unvested stock awards.
(6)In order to facilitate the role of Mr. Dahl as Chair of the Audit Committee prior to the Merger and to provide us with greater access to him as Chair, we provided Mr. Dahl with access to approximately 240 square feet of office space. Mr. Dahl owned and maintained separate phone, fax, server and computer systems. We did not incur any incremental costs in connection with the provision of this office space. Mr. Dahl resigned from his position as a director and Chair of the Audit Committee as of September 9, 2016. As of December 31, 2016, Mr. Dahl held no stock options or unvested stock awards.
(7)Mr. Ejabat resigned from his position as Executive Chairman of the Board of Directors effective as of January 31, 2016. As of December 31, 2016, Mr. Ejabat had a total of 589,999 stock options. Mr. Ejabat provided transitional services to DZS for a period of one year following his resignation. In consideration of such transitional services, in February 2016, we issued to him 100,000 vested shares of our common stock. As of December 31, 2016, Mr. Ejabat held no stock options or unvested stock awards.
(8)As of December 31, 2016, Mr. Kim held no stock options and a total of 3,000 restricted stock units.
(9)Effective September 11, 2017, Richard Kramlich resigned from the Board of Directors to focus on his other business endeavors. As of December 31, 2016, Mr. Kramlich held a total of 30,210 stock options and 3,000 restricted stock units. In connection with Mr. Kramlich’s resignation, the Board of Directors approved the extension of time for him to exercise his vested stock options through September 11, 2018.
(10)As of December 31, 2016, Mr. Nam held a total of 10,000 stock options and no unvested stock awards.
(11)As of December 31, 2016, Mr. Park held a total of 10,000 stock options and no unvested stock awards.
(12)Ms. Yazdi resigned from her position as a director of DZS as of September 9, 2016. As of December 31, 2016, Ms. Yazdi held a total of 10,000 stock options and no unvested stock awards.

ITEM 12.    

ITEM 12.

SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT AND RELATED STOCKHOLDER MATTERS

Security Ownership of Certain Beneficial Owners and Management

The following table sets forth information knownrequired by this item relating to us regardingsecurity ownership of our common stock on September 15, 2017 by (1) each person who beneficially owned more than 5% of our common stock, (2) each current director, (3) each of our named executive officerscertain beneficial owners and (4) all directors, named executive officersmanagement, and their affiliates as a group. We are not aware of any arrangements, including any pledge of our common stock that could result in a change in control.

Name of Beneficial Owner (1) Number of Shares Beneficially
Owned (2)
  Percent Owned (3)
DASAN Networks, Inc. 9,493,015
 (4)57.9%
New Enterprise Associates 956,254
 (5)5.8%
Il Yung Kim 58,332
 (6)*
James Norrod 70,324
 (7)*
Kirk Misaka 136,472
 (8)*
Min Woo Nam 2,914
 (9)*
Michael Connors 78,802
 (10)*
Seong Gyun Kim 750
 (11)*
Sung-Bin Park 2,914
 (12)*
All directors, named executive officers and their affiliates as a group (8 persons) 10,802,025
  65.1%
*Denotes less than 1%.
(1)Under the rules of the SEC, a person is the beneficial owner of securities if that person has sole or shared voting or investment power. Except as indicated in the footnotes to this table and subject to applicable community property laws, to our knowledge, the persons named in the table have sole voting and investment power with respect to all

shares of common stock beneficially owned. Unless otherwise indicated, the addresssecurities authorized for each person or entity named below is c/o DASAN Zhone Solutions, Inc., 7195 Oakport Street, Oakland, California 94621.
(2)In computing the number of shares beneficially owned by a person named in the table and the percentage ownership of that person, shares of common stock that such person had the right to acquire within 60 days after September 15, 2017 are deemed outstanding, including without limitation, upon the exercise of options or vesting of restricted stock units. These shares are not, however, deemed outstanding for the purpose of computing the percentage ownership of any other person.
(3)For each person included in the table, percentage ownership is calculated by dividing the number of shares beneficially owned by such person by the sum of (a)16,385,455 shares of common stock outstanding on September 15, 2017 plus (b) the number of shares of common stock that such person had the right to acquire within 60 days after September 15, 2017.
(4)The address of DASAN Networks, Inc. is DASAN Tower, 49, Daewangpangyo-ro 644 Beon-gil Budang-gu, Sungnam-si, Gyeonggi-do, 463-400, Korea.
(5)Based solely on information contained in a Schedule 13D/A filed with the SEC on April 21, 2016 (as adjusted for the one-for-five reverse stock split of our common stock effected in February 2017), consists of (a) 72,685 shares held by New Enterprise Associates VIII, Limited Partnership, (b) 51,767 shares held by New Enterprise Associates 8A, Limited Partnership, (c) 357,613 shares held by New Enterprise Associates 9, Limited Partnership and (d) 474,189 shares held by New Enterprise Associates 10, Limited Partnership. Each separate New Enterprise Associates entity disclaims beneficial ownership over shares with respect to which it is not the direct holder, except to the extent of its pecuniary interest therein. The address of the entities affiliated with New Enterprise Associates is 1954 Greenspring Drive, Suite 600, Timonium, MD 21093.
(6)Consists of 58,332 shares subject to stock options exercisable by Mr. Kim within 60 days after September 15, 2017.
(7)Consists of (a) 12,000 shares held by Mr. Norrod, and (b) 58,324 shares subject to options exercisable by Mr. Norrod within 60 days after September 15, 2017.
(8)Consists of (a) 89,309 shares held by Mr. Misaka, and (b) 47,163 shares subject to options exercisable by Mr. Misaka within 60 days after September 15, 2017.
(9)Consists of 2,914 shares subject to options exercisable by Mr. Nam within 60 days after September 15, 2017.
(10)Consists of (a) 25,565 shares held by Dr. Connors, (b) 3,333 shares held by Suaimhneas LLC, of which Dr. Connors is the sole manager and his adult children are the owners, and (c) 49,904 shares subject to options exercisable by Dr. Connors within 60 days after September 15, 2017.
(11)Consists of 750 shares subject to options exercisable by Mr. Kim within 60 days after September 15, 2017.
(12)Consists of 2,914 shares subject to options exercisable by Mr. Park within 60 days after September 15, 2017.
(13)Includes 219,551 shares subject to options exercisable within 60 days after September 15, 2017.

Equity Compensation Plan Information
The following table provides information as of December 31, 2016 with respect to shares of our common stock that may be issued under existing equity compensation plans. The table does not include information with respect to shares subject to outstanding options grantedissuance under equity compensation arrangements assumedplans is incorporated herein by us in connection with mergers and acquisitionsreference to the sections of the companies that originally granted those options.
Proxy Statement entitled “Ownership of Securities” and “Executive Compensation.”

  (a)(b) (c) 
Plan Category 
Number of
securities to be issued upon exercise of outstanding options, warrants, and rights
(1)(2)
Weighted average exercise price of outstanding options, warrants and rights(2) Number of securities remaining available for future issuance under equity compensation plans (excluding securities reflected in column (a))(2) 
Equity compensation plans approved by security holders 910,245
 $6.84
 120,104
 (3)(4)
Equity compensation plans not approved by security holders 
  
 
  

(1)This column includes 9,302 shares of unvested restricted stock and/or restricted stock units outstanding as of December 31, 2016 under the 2001 Plan, and does not reflect options assumed in mergers and acquisitions where the plans governing the options will not be used for future awards. As of December 31, 2016, a total of 234,554 shares of our common stock were issuable upon exercise of outstanding options under those assumed arrangements. The weighted average exercise price of those outstanding options is $8.34 per share.
(2)Amounts presented have been adjusted to reflect the one-for-five reverse stock split effected on February 28, 2017.

(3)Includes shares available for future issuance under the Zhone Technologies, Inc. 2002 Employee Stock Purchase Plan. As of December 31, 2016, 113,845 shares of common stock were available for future issuance under the plan.
(4)Under the 2001 Plan, the number of shares available for issuance under the plan will be increased automatically on January 1 of any year in which the number of shares available for issuance is less than 5% of the total number of outstanding shares on such date. In any such case, the increase is equal to an amount such that the aggregate number of shares available for issuance under the plan equals the least of (a) 5% of the total number of outstanding shares on such date, (b) 1,000,000 shares, or (c) such other number of shares as determined by the Board. The 2001 Plan expired in March 2017.

ITEM 13.    

ITEM 13.

Review and Approval of Related Party Transactions
All relationships and transactions in which

The information required by this item is incorporated herein by reference to the company and our directors and executive officers or their immediate family members are participants are reviewed by our Audit Committee or another independent bodysection of the Board of Directors, such as the independentProxy Statement entitled “Certain Relationships and disinterested members of the Board of Directors. As set forth in the Audit Committee charter, the members of the Audit Committee, all of whom are independent directors, review and approve related party transactions for which such approval is required under applicable law, including SEC and Nasdaq rules. In the course of its review and approval or ratification of a disclosable related party transaction, the Audit Committee or the independent and disinterested members of the Board of Directors may consider:

the nature of the related person’s interest in the transaction;
the material terms of the transaction, including, without limitation, the amount and type of transaction;
the importance of the transaction to the related person;
the importance of the transaction to the company;
whether the transaction would impair the judgment of a director or executive officer to act in the best interest of the company; and
any other matters the Audit Committee deems appropriate.
Related Party Transactions
Transactions.”


As discussed above under “Corporate Governance Principles and Board Matters - Board Structure” in Part III, Item 10 of this report, and in accordance with the terms of the Merger Agreement, on September 9, 2016, we entered into a stockholder agreement with DNI (the holder of 58% of the outstanding shares of our common stock), pursuant to which DNI has agreed, on the terms set forth therein, to vote its shares of our common stock until September 9, 2018 (1) in favor of the election of each person who is nominated by the Board of Directors for election to the Board in accordance with our bylaws and (2) against the removal of any such director unless such removal is recommended by a resolution approved by the affirmative vote of at least two-thirds of the entire Board of Directors.
In connection with the Merger, on September 9, 2016, we also entered into a lock-up agreement with each of our directors and executive officers and certain of our significant stockholders (including DNI), pursuant to which such persons and stockholders agreed not to offer, sell or otherwise dispose of any shares of our common stock, or any options or warrants to purchase our common stock, for a period of 180 days from the effective time of the Merger (or for a period of 90 days from the effective time of the Merger, in respect of certain stockholders), subject to customary exceptions.

Also in connection with the Merger, on September 9, 2016, we entered into a registration rights agreement with DNI, which provides DNI with the right to demand that we register its shares of our common stock and also provides DNI with piggyback registration rights for its shares of our common stock. Pursuant to the registration rights agreement, upon DNI’s request, we are required to prepare and file one or more registration statements with the SEC for the offer and sale from time to time on a continuous or delayed basis of the shares of our common stock issued to DNI in connection with the Merger. Such registrations are required to be accomplished pursuant to a shelf registration statement on Form S-3 (or, if we do not satisfy the requirements for such form, on such other form as may be appropriate). Additionally, DNI has the right to demand that we effect the registration of a specified number of shares for sale within a specified period, provided that such demand may only be made twice in any 12-month period. In addition, under the registration rights agreement, if we propose to file a registration statement with respect to an offering of equity securities for sale to the public (other than registrations on Form S-4 or S-8), we are

required to provide notice to DNI of such anticipated filing and, subject to certain limitations and priorities, DNI may require us to include in such registration any of the shares of our common stock issued to it in connection with the Merger.

See Note 13 to the consolidated financial statements set forth in Part II, Item 8 of this report for information regarding other related party transactions involving DNI and its affiliates. In addition, Mr. Min Woo Nam, the Chairman of our Board of Directors, personally guarantees certain of our credit facilities.  As of December 31, 2016, the aggregate principal amount of outstanding indebtedness guaranteed by Mr. Nam under such facilities was $8.7 million.
Director Independence
See “Item 10. Directors, Executive Officers and Corporate Governance” for information regarding our Board of Directors and independence requirements.
ITEM 14.    PRINCIPAL ACCOUNTING

ITEM 14.

PRINCIPAL ACCOUNTANT FEES AND SERVICES

Principal Accounting Fees and Services

The followinginformation required by this item is a summaryincorporated herein by reference to the section of the fees billed by PricewaterhouseCoopers LLP (PwC) and Samil PricewaterhouseCoopers (Samil PwC) for professional services rendered to DZS and DNS, respectively, for the year ended December 31, 2016, and billed by Samil PwC to DNS for the year ended December 31, 2015:

  2016  2015
Audit Fees $1,893,194
(1) $661,144
Audit-Related Fees 60,274
(2) 116,878
Tax Fees 77,043
  
All Other Fees 
  2,244
Total $2,030,511
  $780,266
(1) Audit Fees for the year ended December 31, 2016 comprise $1,837,000 billed by PwC and $56,194 billed by Samil PwC.
(2) All Audit-Related Fees for the year ended December 31, 2016 were billed by Samil PwC.
Audit Fees. This category includes the auditProxy Statement entitled “Proposal 2: Ratification of our annual financial statements, reviewAppointment of financial statements, audit of our internal control over financial reporting (when applicable), review of our Form 10-Q quarterly reports, and services that are normally provided by the independent registered public accounting firm in connection with statutory and regulatory filings or engagements. With respect to pre-Merger periods, this category includes the audit of the annual financial statements and review of financial statements of DNS only, as DNS was a wholly owned subsidiary of DNI prior to the Merger.
Audit-Related Fees. This category consists of assurance and related services provided by PwC and Samil PwC that are reasonably related to the performance of the audit or review of our financial statements, and are not reported above as “Audit Fees.Independent Registered Public Accounting Firm. These services include accounting consultations in connection with acquisitions, and consultations concerning financial accounting and reporting standards.
Tax Fees. This category consists of professional services rendered by PwC and Samil PwC primarily in connection with tax compliance, tax planning and tax advice activities. These services include assistance with the preparation of tax returns, claims for refunds, value added tax compliance, and consultations on state, local and international tax matters.
All Other Fees. This category consists of fees for products and services other than the services reported above.


Pre-Approval Policy of the Audit Committee
The Audit Committee’s policy is to pre-approve all audit and permissible non-audit services provided by the independent registered public accounting firm. These services may include audit services, audit-related services, tax services and other services. Pre-approval is generally provided for up to one year, is detailed as to the particular service or category of services, and is generally subject to a specific budget. The independent registered public accounting firm and management are required to periodically report to the Audit Committee regarding the extent of services provided by the independent registered public accounting firm in accordance with this pre-approval, and the fees for the services performed to date. The Audit Committee

may also pre-approve particular services on a case-by-case basis. All audit-related fees, tax fees and other fees billed to DZS or Legacy Zhone in each of the last two fiscal years were pre-approved by the Audit Committee.



PART IV


ITEM 15.    EXHIBITS, FINANCIAL STATEMENT SCHEDULES

ITEM 15.

EXHIBITS AND FINANCIAL STATEMENT SCHEDULES

1.

1.

Financial Statements

The Index to Consolidated Financial Statements on page 4232 is incorporated herein by reference as the list of financial statements required as part of this report.

Annual Report on Form 10-K.

2.

Exhibits

The Exhibit Index on page 106exhibits required to be filed by Item 601 of Regulation S-K are listed in the “Index to Exhibits” immediately preceding the exhibits hereto and such listing is incorporated herein by reference as the list of exhibits required as part of this report.

reference.

ITEM 16.

FORM 10-K SUMMARY

None.

ITEM 16.    FORM 10-K SUMMARY

INDEX TO EXHIBITS

None.

 

 

 

 

Incorporated by Reference

 

 

Exhibit

Number

 

Exhibit Description

 

Form

 

Exhibit

 

Filing Date

 

Filed or

Furnished

Herewith

 

 

 

 

 

 

 

 

 

 

 

2.1

 

Share Purchase Agreement dated as of October 5, 2018, by and between ZTI Acquisition Subsidiary III Inc. and Riverside KM Beteiligung GmbH

 

8-K

 

10.1

 

January 1, 2019

 

 

 

 

 

 

 

 

 

 

 

 

 

2.2

 

Agreement, dated as of December 31, 2018, by and between ZTI Acquisition Subsidiary III Inc. and Riverside KM Beteiligung GmbH

 

8-K

 

10.3

 

January 1, 2019

 

 

 

 

 

 

 

 

 

 

 

 

 

2.3

 

Share Transfer Agreement dated as of July 31, 2019 by and between Handysoft, Inc., as Transferor, and DASAN Zhone Solutions, Inc., as Transferee

 

8-K

 

2.1

 

August 5, 2019

 

 

 

 

 

 

 

 

 

 

 

 

 

3.1

 

Restated Certificate of Incorporation of DASAN Zhone Solutions, Inc., as amended through February 28, 2017

 

10-K

 

3.1

 

September 27, 2017

 

 

 

 

 

 

 

 

 

 

 

 

 

3.1.1

 

Certificate of Amendment to the Restated Certificate of Incorporation of DZS Inc.

 

8-K

 

3.1

 

August 27, 2020

 

 

 

 

 

 

 

 

 

 

 

 

 

3.2

 

Amended and Restated Bylaws of DZS Inc.

 

10-K

 

3.2

 

March 11, 2021

 

 

 

 

 

 

 

 

 

 

 

 

 

4.1

 

Description of Capital Stock

 

 

 

 

 

 

 

X

 

 

 

 

 

 

 

 

 

 

 

10.1#

 

DASAN Zhone Solutions, Inc. 2017 Incentive Award Plan

 

8-K

 

10.1

 

January 10, 2017

 

 

 

 

 

 

 

 

 

 

 

 

 

10.1.1#

 

Amendment to DASAN Zhone Solutions, Inc. 2017 Incentive Award Plan

 

10-K

 

10.1.1

 

March 12, 2019

 

 

 

 

 

 

 

 

 

 

 

 

 

10.1.2#

 

Form of Stock Option Agreement for the DASAN Zhone Solutions, Inc. 2017 Incentive Award Plan

 

8-K

 

10.2

 

January 10, 2017

 

 

 

 

 

 

 

 

 

 

 

 

 

10.1.3#

 

Form of Restricted Stock Unit Award Agreement for the DASAN Zhone Solutions, Inc. 2017 Incentive Award Plan

 

10-K

 

10.1

 

September 27, 2017

 

 

 

 

 

 

 

 

 

 

 

 

 

10.2#

 

DASAN Zhone Solutions, Inc. Amended and Restated 2001 Stock Incentive Plan, as amended

 

8-K

 

10.6

 

September 13, 2016

 

 

 

 

 

 

 

 

 

 

 

 

 

10.2.1#

 

Form of Stock Option Agreement for the DASAN Zhone Solutions, Inc. Amended and Restated 2001 Stock Incentive Plan, as amended

 

8-K

 

10.7

 

September 13, 2016

 

 

 

 

 

 

 

 

 

 

 

 

 

10.2.2#

 

Form of Restricted Stock Award Agreement for the DASAN Zhone Solutions, Inc. Amended and Restated 2001 Stock Incentive Plan, as amended

 

8-K

 

10.2

 

May 17, 2007

 

 

 

 

 

 

 

 

 

 

 

 

 

10.2.3#

 

Form of Restricted Stock Unit Award Agreement for the DASAN Zhone Solutions, Inc. Amended and Restated 2001 Stock Incentive Plan, as amended

 

10-Q

 

10.3

 

November 14, 2016

 

 

 

 

 

 

 

 

 

 

 

 

 

10.3#

 

DASAN Zhone Solutions, Inc. 2018 Employee Stock Purchase Plan

 

S-8

 

10.1

 

November 8, 2018

 

 

 

 

 

 

 

 

 

 

 

 

 

10.4#

 

DASAN Zhone Solutions, Inc. Non-Employee Director Compensation Program

 

10-K

 

10.4

 

April 4, 2018

 

 

 

 

 

 

 

 

 

 

 

 

 

10.5#

 

Form of Indemnity Agreement (directors and officers)

 

10-Q

 

10.20

 

May 14, 2004

 

 

 

 

 

 

 

 

 

 

 

 

 

10.6#

 

Employment Agreement dated August 1, 2020, by and between DASAN Zhone Solutions, Inc. and Charles Daniel Vogt

 

10-Q

 

10.2

 

November 6, 2020

 

 

 

 

 

 

 

 

 

 

 

 

 


SIGNATURES

 

 

 

 

Incorporated by Reference

 

 

Exhibit

Number

 

Exhibit Description

 

Form

 

Exhibit

 

Filing Date

 

Filed or

Furnished

Herewith

 

 

 

 

 

 

 

 

 

 

 

10.6.1#

 

First Amendment to Employment Agreement dated as of June 1, 2021 by and between DZS Inc. and Charlie Vogt

 

8-K

 

10.1

 

June 4, 2021

 

 

 

 

 

 

 

 

 

 

 

 

 

10.7#

 

Stock Option Agreement dated August 1, 2020, by and between DASAN Zhone Solutions, Inc. and Charles Daniel Vogt

 

10-Q

 

10.3

 

November 6, 2020

 

 

 

 

 

 

 

 

 

 

 

 

 

10.8#

 

Stock Option Agreement dated August 1, 2020, by and between DASAN Zhone Solutions, Inc. and Charles Daniel Vogt

 

10-Q

 

10.4

 

November 6, 2020

 

 

 

 

 

 

 

 

 

 

 

 

 

10.9#

 

Employment Agreement dated as of August 2, 2021, by and between DZS Inc. and Misty D. Kawecki

 

8-K

 

10.1

 

August 2, 2021

 

 

 

 

 

 

 

 

 

 

 

 

 

10.10#

 

Employment Agreement dated as of September 28, 2020 by and between DZS Inc. and Justin L. Ferguson

 

10-K

 

10.10

 

March 11, 2021

 

 

 

 

 

 

 

 

 

 

 

 

 

10.11#

 

Employment Agreement, dated as of December 2, 2019, by and between DASAN Zhone Solutions, Inc. and Tom Cancro

 

8-K

 

10.1

 

November 25, 2019

 

 

 

 

 

 

 

 

 

 

 

 

 

10.11.1#

 

Amendment to Employment Agreement dated as of December 1, 2020 by and between DZS Inc. and Thomas Cancro

 

8-K

 

10.1

 

December 4, 2020

 

 

 

 

 

 

 

 

 

 

 

 

 

10.11.2#

 

Second Amendment to Employment Agreement effective April 7, 2021 by and between DZS Inc. and Thomas Cancro

 

8-K

 

10.1

 

April 13, 2021

 

 

 

 

 

 

 

 

 

 

 

 

 

10.11.3#

 

Third Amendment to Employment Agreement effective June 1, 2021 by and between DZS Inc. and Thomas Cancro

 

8-K

 

10.2

 

June 4, 2021

 

 

 

 

 

 

 

 

 

 

 

 

 

10.12

 

Registration Rights Agreement, dated as of September 9, 2016, by and among DASAN Zhone Solutions, Inc., DASAN Networks, Inc. and the other parties thereto

 

8-K

 

10.3

 

September 12, 2016

 

 

 

 

 

 

 

 

 

 

 

 

 

10.13

 

Loan Agreement, dated as of March 27, 2018, by and between DASAN Networks, Inc. and DASAN Network Solutions, Inc.

 

8-K

 

10.1

 

April 2, 2018

 

 

 

 

 

 

 

 

 

 

 

 

 

10.13.1

 

Amendment No. 1 to Loan Agreement dated as of February 25, 2019 by and between DASAN Network, Inc., as Lender, and DASAN Network Solutions, Inc., as Borrower

 

10-Q

 

10.3

 

May 10, 2019

 

 

 

 

 

 

 

 

 

 

 

 

 

10.14

 

Loan Agreement dated as of December 27, 2018 by and between DASAN Networks, Inc., as Lender, and DASAN Zhone Solutions, Inc., as Borrower

 

8-K

 

10.2

 

January 3, 2019

 

 

 

 

 

 

 

 

 

 

 

 

 

10.14.1

 

Amendment No. 1 to Loan Agreement dated as of February 25, 2019 by and between DASAN Network, Inc., as Lender, and DASAN Network Solutions, Inc., as Borrower

 

10-Q

 

10.4

 

May 10, 2019

 

 

 

 

 

 

 

 

 

 

 

 

 

10.15

 

Revolving Credit, Term Loan, Guaranty and Security Agreement dated as of February 27, 2019 by and among PNC Bank, National Association, Citibank, N.A., DASAN Zhone Solutions, Inc., and the lenders named therein

 

10-Q

 

10.1

 

May 10, 2019

 

 

 

 

 

 

 

 

 

 

 

 

 

10.16

 

Export-Import Revolving Credit, Guaranty and Security Agreement dated as of February 27, 2019 by and among PNC Bank, National Association, Citibank, N.A., DASAN Zhone Solutions, Inc., and the lenders named therein

 

10-Q

 

10.2

 

May 10, 2019

 

 

 

 

 

 

 

 

 

 

 

 

 


 

 

 

 

Incorporated by Reference

 

 

Exhibit

Number

 

Exhibit Description

 

Form

 

Exhibit

 

Filing Date

 

Filed or

Furnished

Herewith

 

 

 

 

 

 

 

 

 

 

 

10.17

 

Letter Agreement dated May 10, 2019 by and among PNC Bank, National Association and Citibank, N.A., as lenders, and DASAN Zhone Solutions, Inc., as borrowing agent

 

10-Q

 

10.1

 

August 14, 2019

 

 

 

 

 

 

 

 

 

 

 

 

 

10.18

 

Letter Agreement dated May 31, 2019 by and among PNC Bank, National Association and Citibank, N.A., as lenders, and DASAN Zhone Solutions, Inc., as borrowing agent

 

10-Q

 

10.2

 

August 14, 2019

 

 

 

 

 

 

 

 

 

 

 

 

 

10.19

 

Letter Agreement dated November 8, 2019 by and among PNC Bank, National Association and Citibank, N.A., as lenders, and DASAN Zhone Solutions, Inc., as borrowing agent

 

10-Q

 

10.3

 

November 13, 2019

 

 

 

 

 

 

 

 

 

 

 

 

 

10.20

 

Loan Agreement dated March 3, 2020 and entered into as of March 4, 2020 by and between DASAN Networks, Inc. and DASAN Network Solutions, Inc. (Korea)

 

8-K

 

10.1

 

March 10, 2020

 

 

 

 

 

 

 

 

 

 

 

 

 

10.21

 

Intellectual Property Pledge Agreement dated March 3, 2020 and entered into as of March 4, 2020 by and between DASAN Networks, Inc. and DASAN Network Solutions, Inc. (Korea)

 

8-K

 

10.2

 

March 10, 2020

 

 

 

 

 

 

 

 

 

 

 

 

 

10.22

 

Share Pledge Agreement dated March 3, 2020 and entered into as of March 4, 2020 by and among DASAN Networks, Inc., DASAN Network Solutions, Inc. (Korea) and DASAN Network Solutions, Inc. (California)

 

8-K

 

10.3

 

March 10, 2020

 

 

 

 

 

 

 

 

 

 

 

 

 

10.23

 

Credit Agreement, dated as of February 9, 2022, among DZS Inc., as Borrower, the other Loan Parties party thereto, the Lenders from time to time parties thereto and JPMorgan Chase Bank, N.A., as Administrative Agent.

 

8-K

 

10.1

 

February 10, 2022

 

 

 

 

 

 

 

 

 

 

 

 

 

21.2

 

List of Subsidiaries

 

 

 

 

 

 

 

X

 

 

 

 

 

 

 

 

 

 

 

23.1

 

Consent of Independent Registered Public Accounting Firm

 

 

 

 

 

 

 

X

 

 

 

 

 

 

 

 

 

 

 

23.2

 

Consent of Independent Registered Public Accounting Firm

 

 

 

 

 

 

 

X

 

 

 

 

 

 

 

 

 

 

 

31.1

 

Certification of Chief Executive Officer Pursuant to Rule 13a-14(a)/15d-14(a)

 

 

 

 

 

 

 

X

 

 

 

 

 

 

 

 

 

 

 

31.2

 

Certification of Chief Financial Officer Pursuant to Rule 13a-14(a)/15d-14(a)

 

 

 

 

 

 

 

X

 

 

 

 

 

 

 

 

 

 

 

32.1

 

Section 1350 Certification of Chief Executive Officer and Chief Financial Officer

 

 

 

 

 

 

 

X

 

 

 

 

 

 

 

 

 

 

 

101.INS

 

Inline XBRL Instance Document – the instance document does not appear in the Interactive Data File because XBRL tags are embedded within the Inline XBRL document

 

 

 

 

 

 

 

X

 

 

 

 

 

 

 

 

 

 

 

101.SCH

 

Inline XBRL Taxonomy Extension Schema

 

 

 

 

 

 

 

X

 

 

 

 

 

 

 

 

 

 

 

101.CAL

 

Inline XBRL Taxonomy Extension Calculation Linkbase

 

 

 

 

 

 

 

X

 

 

 

 

 

 

 

 

 

 

 

101.DEF

 

Inline XBRL Taxonomy Extension Definition Linkbase

 

 

 

 

 

 

 

X

 

 

 

 

 

 

 

 

 

 

 

101.LAB

 

Inline XBRL Taxonomy Extension Labels Linkbase

 

 

 

 

 

 

 

X

 

 

 

 

 

 

 

 

 

 

 

101.PRE

 

Inline XBRL Taxonomy Extension Presentation Linkbase

 

 

 

 

 

 

 

X


Incorporated by Reference

Exhibit

Number

Exhibit Description

Form

Exhibit

Filing Date

Filed or

Furnished

Herewith

104

Cover Page Interactive Data File (embedded within the Inline XBRL document and included in Exhibit 101)

X

#

Management contract or compensatory plan or arrangement in which one or more executive officers or directors participates.


SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

DZS INC.

Date: March 9, 2022

DASAN ZHONE SOLUTIONS, INC.

By:

/s/ Charles Daniel Vogt

Charles Daniel Vogt

Date: September 27, 2017

By:

/S/    IL YUNG KIM
Il Yung Kim

President, Chief Executive Officer and Acting Chief Financial Officer and Director


Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.

Signature

Title

Date

Signature

/s/ Charles Daniel Vogt

TitleDate
/S/    IL YUNG KIM

President, Chief Executive Officer (Principal Executive Officer) and Acting Director

March 9, 2022

Charles Daniel Vogt

/s/ Misty Kawecki

Chief Financial Officer (Principal Financial Officer and DirectorPrincipal Accounting Officer)

September 27, 2017

March 9, 2022

Il Yung Kim

Misty Kawecki

(Principal Executive, Financial and Accounting Officer)

/S/    MIN WOO NAMs/ Min Woo Nam

Chairman of the Board of Directors

September 27, 2017

March 9, 2022

Min Woo Nam

/S/    MICHAEL CONNORSs/ Matt Bross

Director

September 27, 2017

March 9, 2022

Michael Connors

Matt Bross

/S/    SEONG GYUN KIMs/ Barbara Carbone

Director

September 27, 2017

March 9, 2022

Seong Gyun Kim

Barbara Carbone

/S/    SUNG-BIN PARKs/ Joon Kyung Kim

Director

September 27, 2017

March 9, 2022

Sung-Bin Park

Joon Kyung Kim

/s/ David Schopp

Director

March 9, 2022

David Schopp

/s/ Choon Yul Yoo

Director

March 9, 2022

Choon Yul Yoo


EXHIBIT INDEX
Exhibit
Number
Exhibit Description Incorporated by Reference 
Filed or Furnished
Herewith
Form 
File
Number
 Exhibit Filing Date 
3.1         X
3.2 8-K 000-32743 3.2 September 12, 2016  
10.1# 8-K 000-32743 10.1 January 10, 2017  
10.1.1# 8-K 000-32743 10.2 January 10, 2017  
10.1.2#         X
10.2 # 8-K 000-32743 10.6 September 13, 2016  
10.2.1# 8-K 000-32743 10.7 September 13, 2016  
10.2.2# 8-K 000-32743 10.2 May 17, 2007  
10.2.3# 10-Q 000-32743 10.3 November 14, 2016  
10.3# 8-K 000-32743 10.1 May 17, 2006  
10.5#         X
10.5# 10-Q 000-32743 10.20 May 14, 2004  
10.6# 10-Q 000-32743 10.1 August 9, 2012  
10.7# 10-Q 000-32743 10.1 November 8, 2013  
10.8# 8-K 000-32743 10.1 September 13, 2016  
10.9# 8-K 000-32743 10.2 September 13, 2016  

Exhibit
Number
Exhibit Description Incorporated by Reference 
Filed or Furnished
Herewith
Form 
File
Number
 Exhibit Filing Date 
10.10# 8-K 000-32743 10.3 September 13, 2016  
10.11# 8-K 000-32743 10.4 September 13, 2016  
10.12# 8-K 000-32743 10.5 September 13, 2016  
10.13# 8-K 000-32743 10.1 November 14, 2016  
10.14# 8-K 000-32743 10.1 April 5, 2016  
10.15# 10-K 000-32743 10.17 March 23, 2016  
10.16 8-K 000-32743 10.1 September 12, 2016  
10.17 8-K 000-32743 10.2 September 12, 2016  
10.18 8-K 000-32743 10.3 September 12, 2016  
10.19 8-K 000-32743 10.4 September 12, 2016  
10.20 10-K 000-32743 10.16 March 15, 2012  

Exhibit
Number
Exhibit Description Incorporated by Reference 
Filed or Furnished
Herewith
Form 
File
Number
 Exhibit Filing Date 
10.21.1 10-K 000-32743 10.12.1 March 15, 2013  
10.21.2 8-K 000-32743 10.1 October 1, 2013  
10.21.3 10-K 000-32743 10.13.3 March 5, 2014  
10.21.4 10-K 000-32743 10.14.4 March 6, 2015  
10.21.5 10-K 000-32743 10.14.5 March 23, 2016  
10.2.6 8-K 000-32743 10.5 September 12, 2016  

Exhibit
Number
Exhibit Description Incorporated by Reference 
Filed or Furnished
Herewith
Form 
File
Number
 Exhibit Filing Date 
10.21.7 10-Q 000-32743 10.15 November 14, 2016  
10.21.8 8-K 000-32743 10.1 May 9, 2017  
10.21.9 8-K 000-32743 10.1 July 6, 2017  
10.22 10-K 000-32743 10.17 March 15, 2012  
10.23 8-K 000-32743 10.1 February 23, 2016  
10.23.1 10-Q 000-32743 10.1 August 9, 2016  
21.2         X
23.1         X
23.2         X
31.1         X

Exhibit
Number
Exhibit DescriptionIncorporated by Reference
Filed or Furnished
Herewith
Form
File
Number
ExhibitFiling Date
32.1X
101.INSXBRL Instance DocumentX
101.SCHXBRL Taxonomy Extension SchemaX
101.CALXBRL Taxonomy Extension Calculation LinkbaseX
101.DEFXBRL Taxonomy Extension Definition LinkbaseX
101.LABXBRL Taxonomy Extension Labels LinkbaseX
101.PREXBRL Taxonomy Extension Presentation LinkbaseX
#
Management contract or compensatory plan or arrangement in which one or more executive officers or directors participates.


110

75