UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
    
FORM 10-K
x ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the Fiscal Year Ended December 31, 20152016
OR
¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
Commission file number: 001-35418
EPAM SYSTEMS, INC.
(Exact Name of Registrant as Specified in its Charter)
Delaware 223536104
(State or other jurisdiction of
incorporation or organization)
 
(I.R.S. Employer
Identification No.)
EPAM Systems, Inc.
41 University Drive,
Suite 202
Newtown, Pennsylvania 18940
(Address of principal executive offices, including zip code)
267-759-9000
(Registrant’s telephone number, including area code)
Securities registered pursuant to Section 12(b) of the Act:
Title of Each Class Name of Each Exchange on Which Registered
Common Stock, par value $0.001 per share New York Stock Exchange
Securities registered pursuant to Section 12(g) of the 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   x  No ¨ 
Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the 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 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.  x
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act. (Check one):
 
Large accelerated filer x  Accelerated filer ¨
    
Non-accelerated filer 
¨ (Do not check if a smaller reporting company)
  Smaller reporting company ¨
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 June 30, 20152016 the aggregate market value of the registrant’s common stock held by non-affiliates of the registrant was approximately $3,332$3,092 million based on the closing sale price as reported on the New York Stock Exchange. Solely for purposes of the foregoing calculation, “affiliates” are deemed to consist of each officer and director of the registrant, and each person known to the registrant to own 10% or more of the outstanding voting power of the registrant.
The number of shares of common stock, $0.001par$0.001 par value, of the registrant outstanding as of February 10, 20162017 was 50,370,48251,184,697 shares.
 DOCUMENTS INCORPORATED BY REFERENCE
The registrant intends to file a definitive Proxy Statement for its 20162017 annual meeting of stockholders pursuant to Regulation 14A within 120 days of the end of the fiscal year ended December 31, 2015.2016. Portions of the registrant’s Proxy Statement are incorporated by reference into Part III of this Form 10-K. With the exception of the portions of the Proxy Statement expressly incorporated by reference, such document shall not be deemed filed with this Form 10-K.
 


 


EPAM SYSTEMS, INC.
FORM 10-K
FOR THE YEAR ENDED DECEMBER 31, 20152016
TABLE OF CONTENTS
 Page
In this annual report, “EPAM,” “EPAM Systems, Inc.,” the “Company,” “we,” “us” and “our” refer to EPAM Systems, Inc. and its consolidated subsidiaries.
“EPAM” is a trademark of EPAM Systems, Inc. “CMMI” is a trademark of the Software Engineering Institute of Carnegie Mellon University. “ISO 9001:2000”2008” and “ISO 27001:2005”2013” are trademarks of the International Organization for Standardization. “ISAE” is a trademark of the International Federation of Accountants. All other trademarks and servicemarks used herein are the property of their respective owners.
Unless otherwise indicated, information contained in this annual report concerning our industry and the markets in which we operate, including our general expectations and market position, market opportunity and market share, is based on information from various sources (including industry publications, surveys and forecasts and our internal research), on assumptions that we have made, which we believe are reasonable, based on such data and other similar sources and on our knowledge of the markets for our services. The projections, assumptions and estimates of our future performance and the future performance of the industry in which we operate, are subject to a high degree of uncertainty and risk due to a variety of factors, including those described under “Item 1A. Risk Factors” and elsewhere in this annual report. These and other factors could cause results to differ materially from those expressed in the estimates included in this annual report.


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SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS
This annual report on Form 10-K contains estimates and forward-looking statements, principally in “Item 1. Business,” “Item 1A. Risk Factors” and “Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations.” Our estimates and forward-looking statements are mainly based on our current expectations and estimates of future events and trends, which affect or may affect our businesses and operations. Although we believe that these estimates and forward-looking statements are based upon reasonable assumptions, they are subject to several risks and uncertainties and are made in light of information currently available to us. Important factors, in addition to the factors described in this annual report, may adversely affect our results as indicated in forward-looking statements. You should read this annual report and the documents that we have filed as exhibits hereto completely and with the understanding that our actual future results may be materially different from what we expect.
The words “may,” “will,” “should,” “could,” “expect,” “plan,” “anticipate,” “believe,” “estimate,” “predict,” “intend,” “potential,” “might,” “would,” “continue” or the negative of these terms or other comparable terminology and similar words are intended to identify estimates and forward-looking statements. Estimates and forward-looking statements speak only as of the date they were made, and, except to the extent required by law, we undertake no obligation to update, to revise or to review any estimate and/or forward-looking statement because of new information, future events or other factors. Estimates and forward-looking statements involve risks and uncertainties and are not guarantees of future performance. As a result of the risks and uncertainties described above, the estimates and forward-looking statements discussed in this annual report might not occur and our future results, level of activity, performance or achievements may differ materially from those expressed in these forward-looking statements due to, including, but not limited to, the factors mentioned above, and the differences may be material and adverse. Because of these uncertainties, you should not place undue reliance on these forward-looking statements. We undertake no obligation to update or revise any forward-looking statements, whether as a result of new information, future events, or otherwise, except as may be required under applicable law.


    
GEOGRAPHICAL REFERENCES
We use the terms “CIS”, “CEE” and “APAC” to describe a portion of our geographic operations and assets. CIS, which stands for the Commonwealth of Independent States, is comprised of constituents of the former U.S.S.R., including Armenia, Azerbaijan, Belarus, Georgia, Kazakhstan, Kyrgyzstan, Moldova, Russia, Tajikistan, Turkmenistan, Ukraine and Uzbekistan. CEE, which stands for Central and Eastern Europe, includes Albania, Bosnia and Herzegovina, Bulgaria, Croatia, Czech Republic, Estonia, Hungary, Latvia, Lithuania, Poland, Republic of Macedonia, Romania, Serbia, Montenegro, Slovakia and Slovenia. APAC, which stands for Asia Pacific, includes all of Asia (including India) and Australia.

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PART I
Item 1. Business
Company Background
We are a leading global provider of software product engineering, technology consultingdevelopment and digital expertiseplatform engineering services to clients located around the world, primarily in North America, Europe, Asia and the CIS region.Australia. With a strong focus on innovative and scalable software solutions, and a continually evolving mix of advanced capabilities, we leverage industry standard and custom developed technology, tools and platforms to deliver results for the most complex business challenges. We focus on building long-term partnerships with clients in industries such as financial services, travel and consumer, software and high technology, financial services,hi-tech, media and entertainment, travel and hospitality, retail, energy, life sciences and healthcare, telecommunications, and government.
Since our inception in 1993, we have focused on software product development services for major independent software vendors (ISVs) and technology companies and refined this core competency through ongoing multi-year engagements. These companies produce advanced technology products that demand sophisticated software engineering talent, tools, methodologies and infrastructure. As a result, we have developed a culture of innovation, technology leadership and process excellence, which helps us maintain a strong reputation for technical proficiency and high-quality project delivery.emerging.
Our work with global leaders in enterprise software platforms and emerging technology companies exposes us to strategic business challenges in various industries, allowinghas allowed us to develop vertical-specific domain expertise. Unlike custom application development tailoredOur culture of innovation, technology leadership, process excellence and high-quality project delivery has helped us continue to specific business requirements, ISVs’ software products must be designed withbuild a higher level of product configurability and operational performance to addressstrong reputation in the needs of a diverse set of end-users operating in a variety of deployment environments. This in-depth understanding of how vertically-oriented ISVs and technology companies solve their clients’ challenges allows us to focus and grow our business in multiple industry verticals, predominantly Financial Services, Media and Entertainment, and Travel and Consumer.marketplace.
Our historical core competency, is full lifecycle software development and product engineering services, including design and prototyping, product development and testing, component design and integration, product deployment, performance tuning, porting and cross-platform migration. This experience created aour foundation for the evolution of our other offerings, which include advanced technology software solutions, intelligent enterprise services and digital engagement.
Our strategic acquisitions allowed us tohave further expandexpanded our global footprint and service offering portfolio. Our 2014 acquisitions of Netsoft Holdings, LLC, Joint Technology Development Limited, GGA Software Services, LLC and Great Fridays Ltd. expandedportfolio, including our capabilities in the healthcare and financial services and digital design areas. Our 2015 acquisitions of NavigationArts, Inc and Alliance Consulting Global Holdings, Inc. enhanced our abilitiesindustries, as well as in digital strategy and design, consulting and test automation, increasing our reach in many of our existing verticals as well as establishing our presence in India.automation. We expect theseour strategic acquisitions will continue to enable us to offer a broader range of services to our clients from a wider variety of locations.
Our Services
Our service offerings cover the full software product development lifecycle from digital strategy and customer experience design to enterprise application platforms implementation and program management services and from complex software development services to maintenance, support, custom application development, application testing, and infrastructure management. Our key service offerings include:
Software Product Development Services
We provide a comprehensive set of software product development services including product research, customer experience design and prototyping, program management, component design and integration, full lifecycle software testing, product deployment and end-user customization, performance tuning, product support and maintenance, managed services, as well as porting and cross-platform migration. We focus on software products covering a wide range of business applications as well as product development for multiple mobile platforms and embedded software product services.

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Custom Application Development Services
We offer complete custom application development services to meet the requirements of businesses with sophisticated application development needs not adequately supported by packaged applications or by existing custom solutions. Our custom application development services leverage our experience in software product development as well as our industry expertise, prebuilt application solution frameworks and specific software product assets. Our range of services includes business and technical requirements analysis, user experience design, solution architecture creation and validation, development, component design and integration, quality assurance and testing, deployment, performance tuning, support and maintenance, legacy applications re-engineering/refactoring, porting and cross-platform migration and documentation.
Application Testing Services
We maintain a dedicated group of testing and quality assurance professionals with experience across a wide range of technology platforms and industry verticals. Our Quality Management System complies with global quality standards such as ISO 9001:2008 and we employ industry-recognized and proprietary defect tracking tools to deliver a comprehensive range of testing services. Our application testing services include: (i) software application testing, including test automation tools and frameworks; (ii) testing for enterprise IT, including test management, automation, functional and non-functional testing, as well as defect management; and (iii) consulting services focused on helping clients improve their existing software testing and quality assurance practices.

Enterprise Application Platforms
As a proven provider of software product development services to major ISVs, we have participated in the development of industry standard technology and business application platforms and their components in such specific areas as customer relationship management and sales automation, enterprise resource planning, enterprise content management, business intelligence, e-commerce, mobile, Software-as-a-Service and cloud deployment. Our experience in such areas allows us to offer services around Enterprise Application Platforms, which include requirements analysis and platform selection, deep and complex customization, cross-platform migration, implementation and integration, as well as support and maintenance. We use our experience, custom tools and specialized knowledge to integrate our clients’ chosen application platforms with their internal systems and processes and to create custom solutions filling the gaps in their platforms’ functionality necessary to address the needs of the clients’ users and customers.
Application Maintenance and Support
We deliver application maintenance and support services through a dedicated team of IT professionals. Our application maintenance and support offerings meet rigorous CMMI and ISAE 3402 Type 2 requirements. Our clients benefit from our proprietary distributed project management processes and tools, which reduce the time and costs related to maintenance, enhancement and support activities. Our services include incident management, fault investigation diagnosis, work-around provision, application bug fixes, release management, application enhancements and third-party maintenance.
Infrastructure Management Services
Given the increased need for tighter enterprise integration between software development, testing and maintenance with private, public and mobile infrastructures, our service offerings also cover infrastructure management services. We have significant expertise in implementing large infrastructure monitoring solutions, providing real-time notification and control from the low-level infrastructure up to and including applications. Our ISAE 3402 Type 2, ISO/IECISO 27001:20052013 and ISO 9001:2008 certifications provide our clients with third-party verification of our information security policies. Our solutions cover the full lifecycle of infrastructure management including application, database, network, server, storage and systems operations management, as well as incident notification and resolution.
We also work closely with leading companies in other industries to enable our clients to better leverage technology and address simultaneous pressures of driving value for the consumer and offering a more engaging experience. Our digital strategy and experience design practice provides strategy, design, creative, and program management services for clients looking to improve their customer experience. In 2014 and 2015, we expanded our digital design capabilities through strategic acquisitions in the U.K. and U.S. We also offer deep expertise across several domains including business-to-business and business-to-consumer e-commerce, customer/partner self-service, employee portals, online merchandising and sales, web content management, mobile solutions and billing.



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Our Vertical Markets
Strong vertical-specific knowledge, backed by extensive experience merging technology with the business processes of our clients, allows us to deliver tailored solutions to various industry verticals. We have categorized our customers into five main industry verticals and a group of emerging verticals.
Financial Services. We have significant experience working with global investment banks, firms, and brokerages; commercial and retail banks, credit card companies, depositories, corporate treasuries, pension funds, and market data providers. We assist these clients with challenges stemming from new regulations, compliance requirements, and risk management. We have established aOur Capital Markets Competency Center which facilitates knowledge exchange, education and collaboration across our organization and develops new software products, frameworks and components to further enhance our financial services solutions and services.
Travel and Consumer. Our capabilities span a range of platforms, applications and solutions that businesses in travel and hospitality use to serve their customers, capture management efficiencies, control operating expenses and grow revenues. Many of the world’s leading airlines, hotel providers and travel agencies rely on our knowledge in creating the best tools for operating and managing their business. Through this vertical, we also deliver a complete range of digital commerce and marketing services to a global set of customers across traditional and online retail, manufacturing and distribution segments.

Software and Hi-Tech. Our core competency is in providing complex software product development services to meet ISVssoftware and technology companies’ constant need for innovation and rapid time-to-market.agility. We help the most prominent software brands in the world build the best software. Through our extensive experience with many industry leaders in Hi-Tech R&D, software engineering and integration, we have developed proprietary internal processes, methodologies and IT infrastructure.infrastructure, which give us an edge when it comes to serving customers in the Hi-Tech and Software Product markets. Our services span the complete software development lifecycle for software product development using our comprehensive development methodologies, testing, and performance tuning, deployment, and maintenance and support.
Media and Entertainment. We have established long-term relationships with leading media and entertainment companies which enable us to bring sustainable value creation and enhanced return-on-content for organizations within this vertical. Our solutions help clients develop new revenue sources, accelerate the creation, collection, packaging and management of content and reach broader audiences. We serve clients in a range of media sub-sectors, including entertainment media, news providers, broadcasting companies, financial information providers, content distributors and advertising networks. Our Business Information Competency Center enables us to provide our clients with solutions that help them overcome challenges related to operating legacy systems, manage varied content formats, rationalize their online assets and lower their cost of delivery. In addition, we provide knowledge discovery platform services, through our InfoNgen business, which combines custom taxonomy development with web crawling, internal file and e-mail classification, newsletter and feed publication and content trend analysis.
Life Sciences and Healthcare. We help our customers in the Life Sciences and Healthcare industry address ever changing market conditions and regulatory environments. Our professionals deliver an end-to-end experience that includes strategy, architecture, build and managed services to clients ranging from the traditional healthcare providers to innovative startups. We work with global Life Sciences companies to deliver sophisticated scientific informatics and innovative enterprise technology solutions. We offer a combination of deep scientific and mathematical knowledge providing global coverage for broad-based initiatives. Our solutions enable clients to speed research, discovery, and time-to-market while improving collaboration, knowledge management, and operational excellence.
We also serve the diverse technology needs of clients in the energy, telecommunications, automotive, and manufacturing insurance, retail industries, andas well the government. These industries represent our Emerging verticals.
Our revenues by vertical for the periods presented are as follows:
Year Ended December 31,Year Ended December 31,
2015 2014 20132016 2015 2014
Financial Services$248,526
 27.2% $215,425
 29.5% $156,340
 28.2%$291,845
 25.2% $248,526
 27.2% $215,425
 29.5%
Travel and Consumer215,303
 23.6
 157,756
 21.6
 117,248
 21.1
259,420
 22.4
 215,303
 23.6
 157,756
 21.6
Software & Hi-Tech192,989
 21.1
 157,944
 21.6
 134,970
 24.3
237,437
 20.5
 192,989
 21.1
 157,944
 21.6
Media & Entertainment120,616
 13.2
 91,726
 12.6
 75,677
 13.6
174,017
 15.0
 120,616
 13.2
 91,726
 12.6
Life Sciences and Healthcare73,327
 8.0
 42,428
 5.8
 14,079
 2.5
105,072
 9.1
 73,327
 8.0
 42,428
 5.8
Emerging Verticals53,856
 5.9
 56,338
 7.7
 49,177
 8.9
79,820
 6.7
 53,856
 5.9
 56,338
 7.7
Reimbursable expenses and other revenues9,511
 1.0
 8,410
 1.2
 7,626
 1.4
12,521
 1.1
 9,511
 1.0
 8,410
 1.2
Revenues$914,128
 100.0% $730,027
 100.0% $555,117
 100.0%$1,160,132
 100.0% $914,128
 100.0% $730,027
 100.0%

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Clients
Our clients primarily consist of Forbes Global 2000 corporations located in North America, Europe, Asia and the CIS. We maintain a geographically diverse client base with 53.1%57.3% of our 20152016 revenues from clients located in North America, 38.6%35.5% from clients in Europe, 4.7%4.0% from clients in the CIS and 2.6%2.1% from our clients in APAC. We typically enter into master services agreements with our clients, which provide a framework for services that is then supplemented by statements of work, which specify the particulars of each individual engagement, including the services to be performed, pricing terms and performance criteria.
Our focus on delivering quality to our clients is reflected by an average of 95.1%96.2% and 84.3%81.9% of our revenues in 20152016 coming from clients that had used our services for at least one and two years, respectively. In addition, we have significantly grown the size of existing accounts as a majority of our top client mix remains consistent over the years. The annual revenue from our top five clients increased from $65.9$107.2 million in 20102011 to $298.1$327.1 million in 20152016 and the annual revenue from our top ten clients increased from $94.5$149.1 million in 20102011 to $400.3$442.3 million in 2015.2016.

During 2016, 2015 and 2014 one customer, UBS AG, accounted for over 10% of our revenues. No customer accounted for over 10% of our revenues in 2013.
The following table presents the percentage of our revenues by client location:
% of Revenues for Year Ended December 31,% of Revenues for Year Ended December 31,
Client location
2015 2014 20132016 2015 2014
North America53.1% 50.4% 50.8%57.3% 53.1% 50.4%
Europe38.6
 39.0
 36.1
35.5
 38.6
 39.0
CIS4.7
 7.6
 11.7
4.0
 4.7
 7.6
APAC2.6
 1.8
 
2.1
 2.6
 1.8
Reimbursable expenses and other revenues1.0
 1.2
 1.4
1.1
 1.0
 1.2
Revenues100.0% 100.0% 100.0%100.0% 100.0% 100.0%
Revenues by client location above differ from our segment information. Our operations consist of four reportable segments: North America, Europe, Russia and Other. This determination is based on the unique business practices and market specifics of each region and that each region engages in business activities from which it earns revenues and incurs expenses. Our reportable segments are based on managerial responsibility for a particular client. Because managerial responsibility for a particular client relationship generally correlates with the client’s geographic location, there is a high degree of similarity between client locations and the geographic boundaries of our reportable segments. In some specific cases, however, managerial responsibility for a particular client is assigned to a management team in another region, usually based on the strength of the relationship between client executives and particular members of our senior management team. In such a case, the client’s activity would be reported through the management team’s reportable segment. Particularly, our acquired clients in the APAC region are reported as part of the Europe segment based on the managerial responsibility for those clients. The following table presents the percentage of our revenues by reportable segment:
% of Segment Revenues for Year Ended December 31,% of Segment Revenues for Year Ended December 31,
Segment
2015 2014 20132016 2015 2014
North America51.5% 51.3% 51.3%55.3% 51.5% 51.3%
Europe43.8
 41.0
 36.8
40.9
 43.8
 41.0
Russia4.2
 6.9
 10.0
3.8
 4.2
 6.9
Other0.5
 0.8
 1.9

 0.5
 0.8
Segment Revenues100.0% 100.0% 100.0%100.0% 100.0% 100.0%
See “Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations” in Part II of this annual report for additional information regardingrelated to segments.

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The following table shows the distribution of our clients by revenues for the periods presented:
Year Ended December 31,Year Ended December 31,
Revenues Greater Than or Equal To2015 2014 20132016 2015 2014
$0.1 million365 306 263431 365 306
$0.5 million211 181 147266 211 181
$1 million136 116 95182 136 116
$5 million33 24 2245 33 24
$10 million14 12 1219 14 12
$20 million7 6 47 7 6
See Note 1718 in the notes to our consolidated financial statements in this Annual Report on Form 10-K for information regarding total assets, operating results and other financial information regardingrelated to our operatingreportable segments.
Sales and Marketing
Our sales and marketing efforts support our business strategy to increase our revenues from new and existing clients through our senior management, sales and business development staff, account managers, and technical specialists. We maintain a dedicated sales force and a marketing team, which coordinates corporate-level branding efforts such as sponsorship of programming competitions toand participation in and hosting of industry conferences and events.

Given our focus on providing technical solutions to our clients’ complex challenges, our IT professionals play an integral role in engaging with clients on potential business opportunities. Our account managers maintain direct client relationships and are tasked with identifying new business opportunities and responding to requests-for-proposals, or RFPs. Account managers typically engage technical and other specialists when pursuing opportunities. This sales model has been effective in promoting repeatedrepeat business and growth from within our existing client base.
In addition to effective client management, we believe that our reputation as a premium provider of software engineering solutions and information technology services drives additional business from inbound requests, referrals and RFPs.requests for proposal (“RFPs”). We enjoy published recognition from third-party industry observers, such as Forrester Research, Forbes Research, Everest Group, Zinnov, CIO Magazine, Information Week, and Software Magazine.
Our Delivery Model
We have delivery centers located in Belarus, Ukraine, Russia, Hungary, Kazakhstan, Bulgaria, Armenia, Poland, China, Mexico, Czech Republic and India. We have client management locations in the United States, Canada, the United Kingdom, Germany, Sweden, Switzerland, Netherlands, Russia, United Arab Emirates, Kazakhstan, Singapore, Hong Kong, Austria, Ireland and Australia. We believe the development of a robust global delivery model creates a key competitive advantage, enabling us to better understand and meet our clients’ diverse needs and provide a compelling value proposition. We continuously grow our delivery platform both organically and through acquired delivery centers and client management locations. Our total headcount of revenue generating personnel was 19,670 as of December 31, 2016.
Our primary delivery centers are located in Belarus, where we have 6,390 IT professionals as of December 31, 2016. The majority of these IT professionals are located in Minsk, the capital of Belarus, which is well-positioned to serve as a prime IT outsourcing destination given its strong industrial base and established educational infrastructure. Furthermore, the IT industry in Belarus has been strongly supported by the government, which has taken steps to encourage investment in the IT sector through long-term tax incentives.
Our locations in Ukraine and Russia offer many of the same benefits as Belarus, including educational infrastructure, availability of qualified software engineers and government support of the IT industry, and, therefore, offer a strong and diversified delivery platform across Europe. As of December 31, 2016, our delivery centers in Ukraine have 4,081 IT professionals and 2,834 IT professionals in Russia. Our delivery model has not been materially affected by the political and economic uncertainty in Russia or Ukraine to date.
Our other significant delivery centers are in the United States with 1,127 IT professionals, Hungary with 1,511 IT professionals, India with 976 IT professionals and Poland with 946 IT professionals as of December 31, 2016. These delivery centers are located strategically to serve clients in North America, Europe and Asia.
Human Capital
Attracting and retaining employees is a key factor in our ability to grow our revenues and meet our clients’ needs. We have dedicated full-time employees that oversee all aspects of our human capital management process. WeIt is critical that we effectively plan our short-term and long-term recruitment needs and deploy the necessary personnel and processes to optimize utilization and to quickly satisfy the demands of our clients. As our business grows, we also focus on hiring and retaining individuals with appropriate skills to fill our executive, finance, legal, HR and other key management positions.
At December 31, 2016, 2015 2014 and 2013,2014, we had a total of 22,383, 18,354 14,109 and 11,05614,109 employees, respectively. Of these employees, as of December 31, 2016, 2015 and 2014, respectively, 19,670, 16,078 and 2013, respectively, 16,078, 11,824 and 9,340 were revenue generating IT professionals.
In our competitive industry, the ability to hire and retain highly-skilled information technology professionals is critical to our success. We believe the quality of our employees serves as a key point of differentiation in how we deliver a superior value proposition to our clients. To attract, retain and motivate our IT professionals, we offer a challenging work environment, ongoing skills development initiatives, attractive career advancement and promotion opportunities thus providing an environment and culture that rewards entrepreneurial initiative and performance.
Historically, we have developed our base of IT professionals by hiring highly-qualified, experienced IT professionals from the CIS and CEE region and by recruiting students from leading universities there. The quality and academic prestige of the CIS and CEE educational system is renowned worldwide. We have strong relationships with the leading institutions in these geographies, such as the Belarusian State University, Belarusian State University of Informatics and Radioelectronics, the Saint Petersburg State University of Information Technologies, Mechanics and Optics, the Moscow State University, the Moscow Institute of Physics & Technology, the Moscow State University of Instrument Engineering and Computer Sciences and the National Technical University of Ukraine. The participants from these universities are frequent and consistent winners in the ACM International Collegiate Programming Contest (“ICPC”), the oldest, largest, and most prestigious programming contest in

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the world. In the 2015 ACM International Collegiate Programming Contest, the two top winning spots were awarded to the CIS schools and a highly regarded Belarusian university finished in the top 15.

We have established EPAM delivery centers near many of these university campuses. Our ongoing involvement with these universities includes supporting EPAM-branded research labs, developing training courses, providing teaching equipment, actively supporting curriculum development and engaging students to identify their talents and interests. Our relationships with these technical institutions provide us access to a highly-qualified talent pool of programmers, and allow us to consistently attract highly-skilled students from these institutions. We also conduct lateral hiring through a dedicated IT professional talent acquisition team whose objective is to locate and attract qualified and experienced IT professionals within the region and other EPAM locations.
We believe that we maintain a good working relationship with our employees and our employees have not entered into any collective bargaining agreements or engaged in any labor disputes.

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Our Delivery Model
We have delivery centers located in Belarus, Ukraine, Russia, Hungary, Kazakhstan, Bulgaria, Armenia, Poland, China, Mexico, Austria, Czech Republic and India. We have client management locations in the United States, Canada, United Kingdom, Germany, Sweden, Switzerland, Netherlands, Russia, Kazakhstan, Singapore, Hong Kong and Australia. We believe the development of a robust global delivery model creates a key competitive advantage, enabling us to better understand and meet our clients’ diverse needs and provide a compelling value proposition. We continuously grow our delivery platform both organically and through acquired delivery centers and client management locations. Our total headcount of revenue generating personnel was 16,078 as of December 31, 2015.
Our primary delivery centers are located in Belarus, where we have 5,207 IT professionals as of December 31, 2015. The majority of these IT professionals are located in Minsk, the capital of Belarus, which is well-positioned to serve as a prime IT outsourcing destination given its strong industrial base, good educational infrastructure and legacy as the center of computer science for the former Soviet Union. Furthermore, the IT industry in Belarus has been strongly supported by the government, which has taken steps to encourage investment in the IT sector through long-term tax incentives.
Our delivery centers in Ukraine have 3,734 IT professionals as of December 31, 2015. Our delivery centers in Russia have 2,235 IT professionals as of December 31, 2015. Our locations in Ukraine and Russia offer many of the same benefits as Belarus, including educational infrastructure, availability of qualified software engineers and government support of the IT industry. We believe our locations in Ukraine and Russia, along with our delivery centers in Belarus, offer a strong and diversified delivery platform across Europe. Our business has not been materially affected by the political and economic uncertainty in Russian or Ukraine to date.
Our other significant delivery centers are in the United States with 1,016 IT professionals, Hungary with 1,151 IT professionals and India with 1,031 IT professionals as of December 31, 2015. These delivery centers are located strategically to serve clients in North America, Europe and Asia. The delivery center in India has been established through our business combination with Alliance Consulting Global Holdings, Inc.
Training and Development
We dedicate significant resources to the training and development of our IT professionals. We believe in the importance of supporting educational initiatives and we sponsor employees’ participation in internal and external training and certifications. Furthermore, we actively pursue partner engagements with technical institutions in CEE.
We provide training, continuing education and career development programs for both entry-level and experienced IT professionals. Entry-level IT professionals undergo a rigorous training program that consists of approximately three to six months of classroom training, as well as numerous hours of hands-on training through actual engagements. This comprehensive program results in employees who are highly proficient and possess deep technical expertise that enables them to immediately serve our clients’ needs. For our mid-level and senior IT professionals, we offer continuing education programs aimed at helping them advance in their careers. We also provide mentoring opportunities, management and soft skills training, intensive workshops and management and technical advancement programs. We are committedprograms in order to systematically identifying and nurturingsupport the development of middle and senior management through formal leadership training, evaluation, development and promotion.
Quality and Process Management
Over the years weWe have invested significant resources intoin developing a proprietary suite of internal applications and tools to manage all aspects of our delivery process. These applications and tools are effective in reducing costs and security risks, while providing control and visibility across all project lifecycle stages both internally and to our clients. In addition, these applications, tools, methodologies and infrastructure allow us to seamlessly deliver services and solutions to global clients, further strengthening our relationships with them.
Our proprietary ISO 9001:2008 and CMMI-certified Quality Management System has been documented, implemented and maintained to ensure the timely delivery of software development services to our clients. We have also developed sophisticated project management techniques facilitated through our Project Management Center, a web-based collaborative environment for software development, which we consider critical to meeting or exceeding the service levels required by our clients.

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Our Quality Management System ensures that we provide timely delivery of software development services to enhance client satisfaction by enabling:
objective valuation of the performed process, work products and services against the client’s process descriptions, standards and procedures;
identification, documentation and timely resolution of noncompliance issues;
feedback to the client’s project staff and managers on the results of quality assurance activities;
monitoring and improvement of the software development process to ensure adopted standards and procedures are implemented and flaws are detected and resolved in a timely manner; and
execution of planned and systematic problem prevention activities.

Our proprietary Project Management Center supports our software development delivery model. Our Project Management Center is effective in reducing risks and providing control and visibility across all project lifecycle stages based on the following features:
multi-site, multi-project capabilities;
activity-based software development lifecycle, which fully tracks the software development activities through the project documentation;
project, role-based access control, which can be available to us, clients and third parties;
fully configurable workflow engine with built-in notification and messaging;
extensive reporting capabilities and tracking of key performance indicators; and
integration with Microsoft Project and Outlook.
The transparency and visibility into software development project deliverables, resource management, team messaging and project-related documents and files provided by our Project Management Center promotes collaboration and strengthens our relationships with our clients. Improved traceability enables significant time savings and cost reductions for business users and IT management during change management for the software development lifecycle. The combination of our Project Management Center with our other proprietary internal applications enhances our offering by reducing errors, increasing quality, effectiveness and oversight, and improving maintenance time.
Based on our analysis of publicly available information of IT services providers, we are the only ISAE 3402 Type 2 certified IT services provider with multiple delivery centers in CEE. This certification is a widely recognized auditing standard developed by the American Institute of Certified Public Accountants, or AICPA, and it serves as additional assurance to our clients regarding the control environment and the security of their sensitive data. Furthermore, this is an important certification for firms in data and information-intensive industries, as well as any organization that is subject to the internal controls certification requirements of the Sarbanes-Oxley Act of 2002, as amended, or the Sarbanes-Oxley Act. Our ISAE 3402 Type 2 certification, in addition to our multiple ISO/IECISO 27001:20052013 and ISO 9001:2008 attestations, underscores our focus on establishing stringent security standards and internal controls.
Competition
The markets in which we compete are changing rapidly and we face competition from both global technology solutions providers as well as those based primarily in specific geographies with lower cost labor such as CEE, India and China. We believe that the principal competitive factors in our business include technical expertise and industry knowledge, end-to-end solution offerings, reputation and track record for high-quality and on-time delivery of work, effective employee recruiting, training and retention, responsiveness to clients’ business needs, scale, financial stability and price.
We face competition primarily from:
India-based technology outsourcing IT services providers, such as Cognizant Technology Solutions (NASDAQ:CTSH), GlobalLogic, HCL Technologies, Infosys Technologies (NASDAQ:INFY), Mindtree, Symphony Technology Group, Tata Consultancy Services and Wipro (NASDAQ:WIT);
Local CEEU.S.-based technology outsourcing IT services providers, such as Syntel, Inc. (NASDAQ: SYNT), and Virtusa Corporation (NASDAQ: VRTU);
CEE-based technology outsourcing IT services providers such as Luxoft Holding, Inc. (NYSE:LXFT);
China-based technology outsourcing IT services providers such as Camelot Information Services, and Pactera;
Other IT and Software Development services providers located elsewhere, such as Globant S.A. (NASDAQ: GLOB);
Large global consulting and outsourcing firms, such as Accenture, Atos Origin, Capgemini, CSC and IBM;
China-based technology outsourcing IT services providers such as Camelot Information Services, and Pactera; and
In-house IT departments of our clients and potential clients.
We believe that our focus on complex software product development solutions, our technical employee base, and the development and continuous improvement in process methodologies, applications and tools position us well to compete

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effectively in the future. Our present and potential competitors may have substantially greater financial, marketing or technical resources; may be able to respond more quickly to new technologies or processes and changes in client demands; may be able to devote greater resources towards the development, promotion and sale of their services than we can; and may also make strategic acquisitions or establish cooperative relationships among themselves or with third parties that increase their ability to address the needs of our clients.

Intellectual Property
Protecting our intellectual property rights is critical to our business. We have invested, and will continue to invest, in research and development to enhance our domain knowledge and create complex, specialized solutions for our clients. We rely on a combination of intellectual property laws, trade secrets, confidentiality procedures and contractual provisions to protect our intellectual property. We require our employees, vendors and independent contractors to enter into written agreements upon the commencement of their relationships with us, which assign to us all intellectual property and work product made, developed or conceived by them in connection with their employment with us. These agreements also provide that any confidential or proprietary information disclosed or otherwise made available by us remains confidential.
We also enter into confidentiality and non-disclosure agreements with our clients. These customary agreements cover our use of the clients’ software systems and platforms as our clients usually own the intellectual property in the products we develop for them. Furthermore, we usually grant a perpetual, worldwide, royalty-free, nonexclusive, transferable and non-revocable license to our clients to use our preexisting intellectual property, but only to the extent necessary in order to use the software or systems we developed for them.
Long-lived Assets
Our long lived-assets disclosed in the table below consist of property and equipment. The table below presents the locations of our long-lived assets:
Year Ended December 31,Year Ended December 31,
2015 2014 20132016 2015 2014
Belarus$44,879
 $41,652
 $38,697
$46,011
 $44,879
 $41,652
Russia7,203
 2,084
 2,196
Ukraine4,487
 4,392
 5,525
5,610
 4,487
 4,392
Hungary2,485
 2,773
 2,644
3,485
 2,485
 2,773
Russia2,084
 2,196
 3,414
United States1,969
 2,001
 2,217
2,618
 1,969
 2,001
Poland2,213
 1,088
 747
China1,887
 514
 289
India1,099
 
 
1,650
 1,099
 
Poland1,088
 747
 4
Other2,408
 1,373
 814
2,939
 1,894
 1,084
Total$60,499
 $55,134
 $53,315
$73,616
 $60,499
 $55,134
Acquisitions
Our sustained growth and increased capabilities are furthered by both organic growth and strategic acquisitions. We have acquired a number of companies in order tocontinually evaluate potential acquisition targets that can expand our vertical-specific domain expertise, geographic footprint, service portfolio, client base and management proficiency.
On July 10, 2015, we acquired all of the outstanding equity of NavigationArts, Inc. and its subsidiary, NavigationArts, LLC (collectively “NavigationArts”). The U.S.-based NavigationArts provides digital consulting, architecture and content solutions and is regarded as a leading user-experience agency. The acquisition of NavigationArts added approximately 90 design consultants to our headcount.
On November 16, 2015, we acquired all of the outstanding equity of Alliance Consulting Global Holdings, Inc. including its wholly-owned direct and indirect subsidiaries Alliance Global Services, Inc., Alliance Global Services, LLC, companies organized under the laws of USA, and Alliance Global Services IT India, a company organized under the laws of India (collectively, “AGS”). AGS provides software product development services and test automation solutions and has multiple locations in the United States and India. The acquisition of AGS added 1,151 IT professionals to our headcount in the United States and India.

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Regulations
Due to the industry and geographic diversity of our operations and services, our operations are subject to a variety of rules and regulations. Several foreign and U.S. federal and state agencies regulate various aspects of our business. See “Item 1A. Risk Factors — Risks Relating to Our Business — We are subject to laws and regulations in the United States and other countries in which we operate, including export restrictions, economic sanctions and the Foreign Corrupt Practices Act, or FCPA, and similar anti-corruption laws. If we are not in compliance with applicable legal requirements, we may be subject to civil or criminal penalties and other remedial measures.”measures”.
Corporate Information
EPAM Systems, Inc. was incorporated in the State of Delaware on December 18, 2002. Our predecessor entity was founded in 1993. Our principal executive offices are located at 41 University Drive, Suite 202, Newtown, Pennsylvania 18940 and our telephone number is 267-759-9000. We maintain a website at http://www.epam.com. Our website and the information accessible through our website are not incorporated into this annual report.

We make certain filings with the Securities and Exchange Commission (“SEC”), including our annual report on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K, and all amendments and exhibits to those reports. We make such filings available free of charge through the Investor Relations section of our website, http://investors.epam.com, as soon as reasonably practicable after they are filed with the SEC. The filings are also available through the SEC at the SEC’s Public Reference Room at 100 F Street, N.E., Washington, D.C. 20549 or by calling 1-800-SEC-0330. In addition, these filings are available on the internet at http://www.sec.gov. Our press releases and recent analyst presentations are also available on our website. The information on our website does not constitute a part of this annual report.
Item 1A. Risk Factors
Risk factors, which could cause actual results to differ from our expectations and which could negatively impact our financial condition and results of operations, are discussed below and elsewhere in this annual report. The risks and uncertainties described below are not the only ones we face. If any of the risks or uncertainties described below or any additional risks and uncertainties actually occur, our business, results of operations and financial condition could be materially and adversely affected. In particular, forward-looking statements are inherently subject to risks and uncertainties, some of which cannot be predicted or quantified. See “Special Note Regarding Forward-Looking Statements”.
Risks Relating to Our Business
We may be unable to effectively manage our rapid growth or achieve anticipated growth, which could place significant strain on our management personnel, systems and resources.
We have experienced rapid growth and significantly expanded our business over the past several years, both organically and through acquisitions. We have also grown our support function headcount, including finance, legal and other areas. Our rapid growth has placed and will continue to place significant demands on our management and our administrative, operational and financial infrastructure. Continued expansion increases the challenges we face in:
recruiting, training and retaining sufficiently skilled IT professionals and management personnel;
adhering to and further improving our high-quality and process execution standards and maintaining high levels of client satisfaction;
managing a larger number of clients in a greater number of industries and locations;
maintaining effective oversight of personnel and delivery centers;
coordinating effectively across geographies and business units to execute our strategic plan; and
developing and improving our internal administrative infrastructure, particularly our financial, operational, communications and other internal systems.
Moreover, we intend to continue our expansion for the foreseeable future to pursue existing and potential market opportunities. As we introduce new services or enter into new markets, we may face new market, technological, operational, compliance and administrative risks and challenges, and we may not be able to mitigate these risks and challenges to successfully grow those services or markets. As a result of these problems associated with expansion, we may not be able to achieve our anticipated growth and our business, prospects, financial condition and results of operations could be materially adversely affected.

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Our failure to successfully attract, train and retain new IT professionals with the qualifications necessary to fulfill the needs of our existing and future clients could materially adversely affect our ability to provide high quality services to those clients.
The ability to hire and retain highly-skilled information technology professionals is critical to our success. To maintain and renew existing engagements and obtain new business, we must attract, train and retain skilled IT professionals, including experiencedthose with management IT professionals.experience. Competition for IT professionals can be intense in the markets where we operate and, accordingly, we may not be able to hire or retain all of the IT professionals necessary to meet our ongoing and future business needs. Consequently, we may have to forgo projects due to lack of resources or inability to staff projects optimally.
A significant increase in the attrition rate among IT professionals with specialized skills could decrease our operating efficiency and productivity and could lead to a decline in demand for our services. In addition, any reductions in headcount for economic or business reasons, however temporary, could negatively affect our reputation as an employer and our ability to hire IT professionals to meet our business requirements.

Increases in wages for our IT professionals and other compensation expense could prevent us from sustaining our competitive advantage and result in dilution to our stockholders.
Wage costs for IT professionals in CIS, CEE and APAC, and certain other geographies in which we operate are lower than comparable wage costs in more developed countries. However, wage costs in the service industry in these countries may increase at a faster rate than in the past, which ultimately may make us less competitive unless we are able to increase the efficiency and productivity of our IT professionals as well asand increase the prices we can charge for our services. Increases in wage costs may reduce our profitability.
Additionally, we have granted certain equity-based awards under our stock incentive plans and entered into certain other stock-based compensation arrangements in the past, and expect to continue this practice. The expenses associated with stock-based compensation may reduce the attractiveness to us of issuing equity awards under our equity incentive plan. However, if we do not grant equity awards, or if we reduce the value of equity awards we grant, we may not be able to attract and retain key personnel. If we grant more equity awards to attract and retain key personnel, the expenses associated with such additional equity awards could materially adversely affect our results of operations. The issuance of equity-based compensation would also resultresults in additional dilution to our stockholders.
Our success depends substantially on the continuing efforts of our senior executives and other key personnel, and our business may be severely disrupted if we lose their services.
Our future success heavily depends upon the continued services of our senior executives and other key employees. If one or more of our senior executives or key employees are unable or unwilling to continue in their present positions, it could disrupt our business operations, and we may not be able to replace them easily or at all. In addition, competition for senior executives and key personnel in our industry is intense, and we may be unable to retain our senior executives and key personnel or attract and retain new senior executives and key personnel in the future, in which case our business may be severely disrupted.
If any of our senior executives or key personnel, such as business development managers, joins a competitor or forms a competing company, we may lose clients, suppliers, know-how and key IT professionals and staff members to them. Additionally, there could be unauthorized disclosure or use of our technical knowledge, practices or procedures by such personnel. If any dispute arises between our senior executives or key personnel and us, any non-competition, non-solicitation and non-disclosure agreements we have with our senior executives or key personnel might not provide effective protection to us, especially in CIS and CEE countries where some of our senior executives and key employees reside, in light of uncertainties with local legal systemssystems.
Our profitability will suffer if we are not able to maintain our resource utilization and productivity levels.
Our profitability is significantly impacted by our utilization levels of fixed-cost resources, such as our professionals as well as other resources such as computers and office space, and our productivity levels. We have expanded our operations significantly in CISrecent years, which has materially increased both our headcount and CEE countries.fixed overhead costs. Some of our IT professionals are specially trained to work for specific clients or on specific projects and some of our offshore development centers are dedicated to specific clients or specific projects. Our ability to manage our utilization levels depends significantly on our ability to hire and train high-performing IT professionals and to staff projects appropriately, and on the general economy and its effect on our clients and their business decisions regarding the use of our services. If we experience a slowdown or stoppage of work for any client or on any project for which we have dedicated IT professionals or facilities, we may not be able to reallocate these IT professionals and facilities to other clients and projects to keep their utilization and productivity levels high. If we are not able to maintain optimal resource utilization levels without corresponding cost reductions or price increases, our profitability will suffer.

Our global business exposes us to operational and economic risks.
We are a global company with substantial international operations. Our revenues from clients outside North America represented 45.9%41.6%, 48.5%45.9% and 47.8%48.5% of our revenues excluding reimbursable expenses for 2016, 2015 and 2014, and 2013.respectively. The majority of our employees, along with our development and delivery centers, are located in the CIS and CEE. The global nature of our business creates operational and economic risks.
Risks inherent in conducting international operations include:
foreign exchange fluctuations;
application and imposition of protective legislation and regulations relating to import or export;export, including tariffs, quotas and other trade protection measures;
difficulties in enforcing intellectual property and/or contractual rights;

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complying with a wide variety of foreign laws;
potentially adverse tax consequences;
tariffs, quotas and other trade protection measures;
competition from companies with more experience in a particular country or with international operations; and
potential difficulties in collecting accounts receivable;
overall foreign policy and variability of foreign economic conditions.
We earn our revenues and incur our expenses in multiple currencies, which exposes us to foreign exchange risks relating to revenues, receivables, compensation, purchases and capital expenditures. Currency exchange volatility caused by political or economic instability or other factors, could materially impact our results. See “Item 7A. Quantitative and Qualitative Disclosures about Market Risk.” 
In June 2016, voters in the U.K. approved an exit from the European Union (“Brexit”), and as a result, it is anticipated that the U.K. government will negotiate the terms of the U.K’s withdrawal from the European Union. Short or long term effects of Brexit may result in stock market and foreign currency exchange rate volatility, and may also impact other operational areas of our business, including immigration and mobility of our workforce. We are monitoring the developments relating to Brexit, but the related uncertainty may affect our customers’ operations and may result in new operational and financial challenges for us.
The IT services industry is particularly sensitive to the economic environment and the industry tends to decline during general economic downturns. Given our significant revenues from North America and Europe, if those economies further weaken or slow, pricing for our services may be depressed and our clients may reduce or postpone their technology spending significantly, which may in turn lower the demand for our services and negatively affect our revenues and profitability.
War, terrorism, other acts of violence or natural or manmade disasters may affect the markets in which we operate, our clients, and our service delivery.
Our business may be negatively affected by instability, disruption or destruction in a geographic region in which we operate, regardless of cause, including war, terrorism, riot, civil insurrection or social unrest; and natural or manmade disasters, including famine, flood, fire, earthquake, storm or disease. Such events may cause clients to delay their decisions on spending for IT services and give rise to sudden significant changes in regional and global economic conditions and cycles. These events also pose significant risks to our people and to physical facilities and operations around the world, whether the facilities are ours or those of our clients, which could materially adversely affect our financial results. By disrupting communications and travel, giving rise to travel restrictions, and increasing the difficulty of obtaining and retaining highly-skilled and qualified IT professionals, these events could make it difficult or impossible for us to deliver services to some or all of our clients. Travel restrictions could cause us to incur additional unexpected labor costs and expenses or could restrain our ability to retain the skilled IT professionals we need for our operations. In addition, any extended disruptions of electricity, other public utilities or network services at our facilities, as well as system failures at, or security breaches in, our facilities or systems, could also adversely affect our ability to serve our clients.

Emerging markets are subject to greater risks than more developed markets, including significant legal, economic, tax and political risks.
We have significant operations in CIS and CEE countries, India and other Asian countries, which are generally considered to be emerging markets. Investors in emerging markets should be aware that these markets are vulnerable to market downturns and economic slowdowns elsewhere in the world and are subject to greater risks than more developed markets, including foreign laws and regulations and the potential imposition of trade or foreign exchange restrictions or sanctions, tax increases, fluctuations in exchange rates, inflation and unstable political and military situations, and labor issues. The economies of certain countries where we operate have experienced periods of considerable instability and have been subject to abrupt downturns. Moreover, emerging markets have less established legal systems, which can be characterized by gaps in regulatory structures, selective enforcement of laws, and limited judicial and administrative guidance on legislation, among other limitations. Financial problems or an increase in the perceived risks associated with investing in emerging economies could dampen foreign investment in these markets and materially adversely affect their economies. Such economic instability and any future deterioration in the international economic situation could materially adversely affect our business, financial condition and results of operations.

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Our operations may be adversely affected by ongoing conflict in Ukraine.
Continuing military activities in Ukraine have combined with Ukraine’s weak economic conditions to fuel ongoing economic uncertainty in Ukraine, Russia and other markets. In response to the actions in Ukraine, the EU, United States, Canada, Japan, Switzerland and other nations have imposed, and may continue imposing further, economic sanctions, including specific sanctions on certain Russian entities (specifically in the energy, defense and financial sectors). Restored stability of Ukraine’sProlonged political and economic conditions may not occur for some time and there could be increased violence or economic distressinstability in Ukraine, or other areas in the region.
sanctions against Russia and Russia’s potential response to such sanctions could have a material adverse effect on our operations. We have delivery centers in the Ukraine employing approximately 3,7344,081 IT professionals, none of which are located in the most volatile regions of Eastern Ukraine. We also have delivery centers in Russia, employing approximately 2,2352,834 IT professionals located in various cities including Moscow and St. Petersburg. To date we have not experienced any interruption in our office infrastructure, utility supply or Internet connectivity needed to support our clients. We continue to monitor the situation closely. Our contingency plans include relocating work and/or personnel to other locations and adding new locations, as appropriate. We have no way to predict the progress or outcome of the situation, as the political and civil unrest and reported military activities are fluid and beyond our control.  Prolonged political instability in Ukraine, sanctions against Russia and Russia’s potential response to such sanctions could have a material adverse effect on our operations.
We do not have long-term commitments from our clients, and our clients may terminate contracts before completion or choose not to renew contracts. A loss of business from significant clients could materially affect our results of operations.
Our ability to maintain close relationships with our major clients is essential to the growth and profitability of our business. However, the volume of work performed for any specific client is likely to vary from year to year, especially since we generally are not our clients’ exclusive IT services provider and we do not have long-term commitments from any clients to purchase our services. The ability of our clients to terminate master services agreements and work orders with or without cause makes our future revenues uncertain, as our clients are generally not obligated for any long-term commitments to us. Although a substantial majority of our revenues are generated from clients who also contributed to our revenues during the prior year, our engagements with our clients are typically for projects that are singular in nature. Therefore, we must seek to obtain new engagements when our current engagements end. Our failure to perform or observe any contractual obligations could also result in termination or non-renewal of a contract, as could a change of control of our company.
There are a number of factors relating to our clients that are outside of our control, which might lead them to terminate a contract or project with us, including a client’s:
financial difficulties;
corporate restructuring, or mergers and acquisitions activity;
change in strategic priorities, resulting in elimination of the impetus for the project or a reduced level of technology spending;
change in outsourcing strategy resulting in moving more work to the client’s in-house technology departments or to our competitors; and
replacement of existing software with packaged software supported by licensors.
Termination or non-renewal of a customer contract could cause us to experience a higher than expected number of unassigned employees and an increase inthus compress our cost of revenues as a percentage of revenues,margins until we are able to reduce or reallocate our headcount. The loss of any of our major clients, or a significant decrease in the volume of work they outsource to us or the price at which we sell our services to them, if not replaced by new client engagements, could materially adversely affect our revenues and thus our results of operations.

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Our revenues are highly dependent on a limited number of industries, and any decrease in demand for outsourced services in these industries could reduce our revenues and adversely affect our results of operations.
A substantial portion of our clients is concentrated in five specific industry verticals: Financial Services; Software and Hi-Tech; Media and Entertainment; Travel and Consumer; and Life Sciences and Healthcare. Our business growth largely depends on continued demand for our services from clients in these five industry verticals and other industries that we may target in the future, as well as on trends in these industries to outsource IT services.
A downturn in any of our targeted industries, a slowdown or reversal of the trend to outsource IT services in any of these industries or the introduction of regulations that restrict or discourage companies from outsourcing could result in a decrease in the demand for our services and materially adversely affect our business, financial condition and results of operations. For example, a worsening of economic conditions in the financial services industry, or significant consolidation in any of these industries may reduce the demand for our services and negatively affect our revenues and profitability. Other developments in the industries in which we operate may also lead to a decline in the demand for our services, and we may not be able to successfully anticipate and prepare for any such changes. Decreased demand for our services, or increased pricing pressure on us from our clients in these key industries could adversely affect our results of operations.
If our pricing structures are based on inaccurate expectations and assumptions regarding the cost and complexity of performing our work, or if we are not able to maintain favorable pricing for our services, then our contracts could be unprofitable.
We negotiate pricing terms with our clients utilizing a range of pricing structures and conditions. We face a number of risks when pricing our contracts. Our pricing is highly dependent on our internal forecasts, assumptions and predictions about our projects, the marketplace and global economic conditions (including foreign exchange volatility). Many of our projects entail the coordination of operations and personnel in multiple locations with different skill sets and competencies. Our pricing and cost estimates for the work that we perform may include anticipated long-term cost savings from transformational and other initiatives that we expect to achieve and sustain over the life of the contract. Because of these inherent uncertainties, we may underprice our projects (particularly with fixed-price contracts), fail to accurately estimate the costs of performing the work or fail to accurately assess the risks associated with potential contracts. Any increased or unexpected costs, delays or failures to achieve anticipated cost savings, or unexpected risks we encounter in connection with the performance of this work, including those caused by factors outside our control, could make these contracts less profitable or unprofitable. Moreover, if we are not able to pass on to our clients increases in compensation cost (whether driven by competition for talent or ordinary-course pay increases) or charge premium prices when justified by market demand or the type of service, our profitability may suffer.
In addition, a number of our contracts contain pricing terms that condition a portion of the payment of fees by the client on our ability to meet defined performance goals, service levels and completion schedules set forth in the contracts. Our failure to meet such performance goals, service levels or completion schedules or our failure to meet client expectations in such contracts may result in less profitable or unprofitable engagements.
Our profitability will suffer if we are not able to maintain our resource utilization levels and productivity levels.
Our profitability is significantly impacted by our utilization levels of fixed-cost resources, including human resources as well as other resources such as computers and office space, and our ability to increase our productivity levels. We have expanded our operations significantly in recent years, which has materially increased both our headcount and fixed overhead costs. Some of our IT professionals are specially trained to work for specific clients or on specific projects and some of our offshore development centers are dedicated to specific clients or specific projects. Our ability to manage our utilization levels depends significantly on our ability to hire and train high-performing IT professionals and to staff projects appropriately, and on the general economy and its effect on our clients and their business decisions regarding the use of our services. If we experience a slowdown or stoppage of work for any client or on any project for which we have dedicated IT professionals or facilities, we may not be able to reallocate these IT professionals and facilities to other clients and projects to keep their utilization and productivity levels high. If we are not able to maintain optimal resource utilization levels without corresponding cost reductions or price increases, our profitability will suffer.
If we are not successful in managing increasingly large and complex projects, we may not achieve our financial goals and our results of operations could be adversely affected.
To successfully perform larger and more complex projects, we need to establish and maintain effective, close relationships with our clients, continue high levels of client satisfaction and develop a thorough understanding of our clients’ operations. In addition, we may face a number of challenges managing larger and more complex projects, including:
maintaining high-quality control and process execution standards;

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maintaining planned resource utilization rates on a consistent basis and using an efficient mix of onsite and offshore staffing;
maintaining productivity levels and implementing necessary process improvements; and
controlling costs.
Our ability to successfully manage large and complex projects depends significantly on the skills of our management personnel and IT professionals, some of whom do not have experience managing large-scale or complex projects. In addition, large and complex projects may involve multiple engagements or stages, and there is a risk that a client may choose not to retain us for additional stages or may cancel or delay additional planned engagements. Such cancellations or delays may make it difficult to plan our project resource requirements. If we fail to successfully obtain engagements for large and complex projects, we may not achieve our revenue growth and other financial goals. Even if we are successful in obtaining such engagements, a failure by us to effectively manage these large and complex projects could damage our reputation, cause us to lose business, compress our margins and adversely affect our business and results of operations.

We face risks associated with having a long selling and implementation cycle for our services that require us to make significant resource commitments prior to realizing revenues for those services.
We have a long selling cycle for our IT services, which requires significant investment of human resources and time by both our clients and us. Before committing to use our services, potential clients require us to expend substantial time and resources educating them on the value of our services and our ability to meet their requirements. Therefore, our selling cycle is subject to many risks and delays over which we have little or no control, including our clients’ decision to choose alternatives to our services (such as otherselect another IT services providersservice provider or in-house resources)resources to perform the services and the timing of our clients’ budget cycles and approval processes. If our sales cycle unexpectedly lengthens for one or more large projects, it would negatively affect the timing of our revenues and hinder our revenue growth. For certain clients, we may begin work and incur costs prior to executing a contract. A delay in our ability to obtain a signed agreement or other persuasive evidence of an arrangement, or to complete certain contract requirements in a particular quarter, could reduce our revenues in that quarter.
Implementing our services also involves a significant commitment of resources over an extended period of time from both our clients and us. Our clients may experience delays in obtaining internal approvals or delays associated with technology, thereby further delaying the implementation process. Our current and future clients may not be willing or able to invest the time and resources necessary to implement our services, and we may fail to close sales with potential clients to whom we have devoted significant time and resources. Any significant failure to generate revenues or delays in recognizing revenues after incurring costs related to our sales or services process could materially adversely affect our business.
If we are unable to collect our receivables from, or bill our unbilled services to, our clients, our results of operations and cash flows could be materially adversely affected.
Our business depends on our ability to successfully obtain payment from our clients of the amounts they owe us for work performed. We usually bill and collect on relatively short cycles. We maintain allowances against receivables. Actual losses on client balances could differ from those that we currently anticipate and, as a result, we might need to adjust our allowances. There is no guarantee that we will accurately assess the creditworthiness of our clients. Weak or volatile macroeconomic and global financial system conditions could also result in financial difficulties for our clients, and, as a result, could cause clients to delay payments to us, request modifications to their payment arrangements that could increase our receivables balance, or default on their payment obligations to us. Timely collection of client balances also depends on our ability to complete our contractual commitments and bill and collect our contracted revenues. If we are unable to meet our contractual requirements, we might experience delays in collection of and/or be unable to collect our client balances, and if this occurs, our results of operations and cash flows could be materially adversely affected. Moreover, in the event of delays in payment from our governmental and quasi-governmental clients, we may have difficulty collecting on receivables owed.
We face intense competition for clients and opportunities from onshore and offshore IT services companies, and increased competition, our inability to compete successfully against competitors, pricing pressures or loss of market share could materially adversely affect our business.
The market for IT services is highly competitive, and we expect competition to persist and intensify. We face competition from offshore IT services providers in other outsourcing destinations with low wage costs such as India and China, as well as competition from large, global consulting and outsourcing firms and in-house IT departments of large corporations. Clients tend to engage multiple IT services providers instead of using an exclusive IT services provider, which could reduce our revenues to the extent that clients obtain services from other competing IT services providers. Clients may prefer IT services providers that have more locations or that are based in countries more cost-competitive or more stable than some of the emerging markets in which we operate.

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Current or prospective clients may elect to perform certain services themselves or may be discouraged from transferring services from onshore to offshore IT services providers to avoid negative perceptions that may be associated with using an offshore IT services provider.providers. This shift away from offshore outsourcing would seriously harm our ability to compete effectively with competitors that provide services from within the countries in which our clients operate.
Some of our present and potential competitors may have substantially greater financial, marketing or technical resources than EPAM. Client buying patterns can change if clients become more price sensitive and accepting of low-cost suppliers with less emphasis on quality. Therefore, we cannot assure you that we willmay not be able to retain our clients while competing against such competitors. Increased competition, our inability to compete successfully, pricing pressures or loss of market share could materially adversely affect our business.

Our ability to generate and retain business depends on our reputation in the marketplace.
Our services are marketed to clients and prospective clients based on a number of factors. Since many of our specific client engagements involve unique services and solutions, our corporate reputation is a significant factor in our clients’ evaluation of whether to engage our service, and our clients’ perception of our ability to add value through our services is critical to the profitability of our engagements. We believe the EPAM brand name and our reputation are important corporate assets that help distinguish our services from those of our competitors and contribute to our efforts to recruit and retain talented employees.
However, our corporate reputation is potentially susceptible to damage by actions or statements made by current or former clients and employees, competitors, vendors, adversaries in legal proceedings, government regulators, as well as members of the investment community and the media. There is a risk that negative information about our company, even if based on false rumor or misunderstanding, could adversely affect our business. In particular, damage to our reputation could be difficult and time-consuming to repair, could make potential or existing clients reluctant to select us for new engagements, resulting in a loss of business, and could adversely affect our recruitment and retention efforts. Damage to our reputation could also reduce the value and effectiveness of the EPAM brand name and could reduce investor confidence in us.
If we are unable to adapt to rapidly changing technologies, methodologies and evolving industry standards we may lose clients and our business could be materially adversely affected.
Rapidly changing technologies, methodologies and evolving industry standards are inherent in the market for our services. Our future success will depend in part upon our ability to anticipate developments in IT services, enhance our existing services and to develop and introduce new services to keep pace with such changes and developments and to meet changing client needs. The process of developing our client solutions is extremely complex and is expected to become increasingly complex and expensive in the future due to the introduction of new platforms, operating systems, technologies and methodologies. Our ability to keep pace with, anticipate or respond to these changes in technology, methodology and business is subject to a number of risks, including that:
we may find it difficult or costly to update our services, applications, tools and software and to develop new services quickly enough to meet our clients’ needs;
we may find it difficult or costly to make some features of our software work effectively and securely over the Internet or with new or changed operating systems;
we may find it difficult or costly to update our software and services to keep pace with business, evolving industry standards, methodologies, regulatory and other developments in the industries where our clients operate; and
we may find it difficult to maintain a high level of quality in implementing new technologies and methodologies.
We may not be successful in anticipating or responding to these developments in a timely manner, or if we do respond, the services, technologies or methodologies we develop or implement may not be successful in the marketplace. Further, services, technologies or methodologies that are developed by our competitors may render our services non-competitive or obsolete. Our failure to enhance our existing services and to develop and introduce new services to promptly address the needs of our clients could cause us to lose clients and materially adversely affect our business.

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Undetected software design defects, errors or failures may result in loss of or delay in market acceptance of our servicesbusiness or in liabilities that could materially adversely affect our business.
Our software development solutions involve a high degree of technological complexity, have unique specifications and could contain design defects or software errors that are difficult to detect and correct. Errors or defects may result in the loss of current clients and loss of, or delay in, revenues, loss of market share, loss of client data, a failure to attract new clients or achieve market acceptance, diversion of development resources and increased support or service costs. We cannot provide assurance that, despite testing by our clients and us, errors will not be found in new software product development solutions, which could result in litigation, other claims for damages against us, as well as reputational harm and thus could materially adversely affect our business.

Security breaches and other disruptions to network security could compromise our information and expose us to liability, which would cause our business and reputation to suffer.
In the ordinary course of business, we have access to, collect, store, process and transmit sensitive or confidential data, including intellectual property, our proprietary business information and that of our clients, and personally identifiable information of our clients and employees, in our data centers and on our networks. The secure processing, maintenance and transmission of this information is critical to our operations and business strategy. Despite our security measures, our information technology and infrastructure may be vulnerable to attacks by hackers or breached due to human error, malfeasance or other disruptions. Any such breach could compromise our networks and the information stored there could be accessed, publicly disclosed, misappropriated, lost or stolen. Any such access, disclosure or other loss of information could result in legal claims or proceedings, liability under applicable laws and regulatory penalties. Such a breach or disruption could also disrupt our operations and the services we provide to customers, damage our reputation, and cause a loss of confidence in our products and services, as well as require us to expend significant resources to protect against further breaches and to rectify problems caused by such a breach or disruption. Any of these results could adversely affect our business, revenues and competitive position.
We may be liable to our clients for damages caused by the disclosure of confidential information, system failures or errors.
If any person, including any of our personnel, misappropriates sensitive or confidential client information, including personally identifiable information, we could be subject to significant liability from our clients or from our clients’ customers for breaching contractual confidentiality provisions or privacy laws. Some of our client agreements do not limit our potential liability for certain occurrences, including breaches of confidentiality and infringement indemnity. Furthermore, breaches of confidentiality may entitle the aggrieved party to equitable remedies, including injunctive relief. Any such breach or misappropriation resulting in unauthorized disclosure of sensitive or confidential client information, or a violation of intellectual property rights, whether through employee misconduct, breach of our computer systems, systems failure or otherwise, may subject us to liabilities, damage our reputation and cause us to lose clients.
A significant failure in our telecommunications or IT infrastructure or systems could harm our service model, which could result in a reduction of our revenue and otherwise disrupt our business.
Part of our service model is to maintain active voice and data communications, financial control, accounting, customer service and other data processing systems between our clients’ offices, our delivery centers and our client management locations. Moreover, many of our key systems for corporate operations are internally-developed applications. Our business activities may be materially disrupted in the event of a partial or complete failure of any of these internet, IT or communication systems, which could be caused by, among other things, software malfunction, computer virus attacks, conversion errors due to system upgrading, damage from fire, earthquake, power loss, telecommunications failure, unauthorized entry, demands placed on internet infrastructure by growing numbers of users and time spent online or increased bandwidth requirements or other events beyond our control. Internally-developed systems may not possess the same level of control, security or support that traditional third-party systems and applications do. Loss of all or part of the infrastructure or systems for a period of time could hinder our performance or our ability to complete client projects on time which, in turn, could lead to a reduction of our revenue or otherwise materially adversely affect our business and business reputation.
We may be liable to our clients for damages caused by the disclosure of confidential information, system failures or errors.
If any person, including any of our personnel, misappropriates sensitive or confidential client information, including personally identifiable information, we could be subject to significant liability from our clients or from our clients’ customers for breaching contractual confidentiality provisions or privacy laws. Some of our client agreements do not limit our potential liability for certain occurrences, including breaches of confidentiality and infringement indemnity. Furthermore, breaches of confidentiality may entitle the aggrieved party to equitable remedies, including injunctive relief. Any such breach or misappropriation resulting in unauthorized disclosure of sensitive or confidential client information, or a violation of intellectual property rights, whether through employee misconduct, breach of our computer systems, systems failure or otherwise, may subject us to liabilities, damage our reputation and cause us to lose clients.

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If we cause disruptions to our clients’ businesses or provide inadequate service, our clients may have claims for substantial damages against us, which could cause us to lose clients, have a negative effect on our reputation and adversely affect our results of operations.
If our IT professionals make errors in the course of delivering services to our clients or fail to consistently meet service requirements of a client, these errors or failures could disrupt the client’s business, which could result in a reduction in our revenues or a claim for substantial damages against us. Furthermore, any errors by our employees in the performance of services for a client, or poor execution of such services, could result in a client terminating our engagement and seeking damages from us. In addition, a failure or inability to meet a contractual requirement could seriously damage our reputation and affect our ability to attract new business. Any failure in a client’s system or breach of security relating to the services we provide to the client could damage our reputation or result in a claim for substantial damages against us, regardless of our responsibility for such failure. The successful assertion of one or more large claims against us, whether or not successful, could materially adversely affect our reputation, business, financial condition and results of operations.

From time to time we may invest substantial cash in new facilities and physical infrastructure, and our profitability could be reduced if our business does not grow proportionately.
As our business grows, we may invest in new facilities and physical infrastructure. We may encounter cost overruns or project delays in connection with new facilities. These expansions will likely increase our fixed costs and if we are unable to grow our business and revenues proportionately, our profitability may be reduced.
If we fail to integrate or manage acquired companies efficiently, or if the acquired companies do not perform to our expectations, our overall profitability and growth plans could be materially adversely affected.
Part of our expansion strategy includes strategic acquisitions. These transactions involve significant challenges, including that the risk that an acquisition does not advance our business strategy, that we do not achieve a satisfactory return on our investment, that we are unable to successfully integrate an acquired company’s employees, client relationships and operations, and that the transactions divert significant management attention and financial resources from our ongoing business.
The primary value of many potential acquisition targets in the IT services industry lies in their skilled IT professionals and established client relationships. Transitioning these types of assets to our business can be particularly difficult due to different corporate cultures and values, geographic distance and other intangible factors. These challenges could disrupt our ongoing business distract our management and employees and increase our expenses, including causing us to incur significant one-time expenses and write-offs, and make it more difficult and complex for our management to effectively manage our operations. If we are not able to successfully integrate an acquired entity and its operations and to realize the benefits envisioned for such acquisition, our overall growth and profitability plans may be adversely affected.
Our effective tax rate could be materially adversely affected by several factors.
We conduct business globally and file income tax returns in multiple jurisdictions. Our effective tax rate could be materially adversely affected by several factors, including changes in the amount of income taxed by or allocated to the various jurisdictions in which we operate that have differing statutory tax rates; changing tax laws, regulations and interpretations of such tax laws in multiple jurisdictions; and the resolution of issues arising from tax audits or examinations and any related interest or penalties.
The determination of our provision for income taxes and other tax liabilities requires estimation, judgment and calculations where the ultimate tax determination may not be certain. Our determination of tax liability is always subject to review or examination by authorities in various jurisdictions.
If a tax authority in any jurisdiction reviews any of our tax returns and proposes an adjustment, including as a result of a determination that the transfer prices and terms we have applied are not appropriate, such an adjustment could have a negative impact on our business.

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Our earnings could be adversely affected if we change our intent not to repatriate earnings infrom Belarus, Cyprus, Ukraine, the CISUnited Kingdom, and CEERussia or such earnings become subject to U.S. tax on a current basis.
We do not accrue incremental U.S. taxes on all CISearnings in Belarus, Cyprus, Ukraine, the United Kingdom, and CEE earningsRussia as these earnings (as well as other foreign earnings for all periods) are considered to be indefinitely reinvested outside of the United States. While we have no plans to do so, events may occur in the future that could effectively force us to change our intent not to repatriate our foreign earnings. If we change our intent and repatriate such earnings, we will have to accrue the applicable amount of taxes associated with such earnings and pay taxes at a substantially higher rate than our effective income tax rate in 2015.2016. These increased taxes could materially adversely affect our financial condition and results of operations.
Our operating results may be negatively impacted by the loss of certain tax benefits provided by the governments of Belarus and other countries to companies in our industry.
Our subsidiary in Belarus is a member of the Belarus Hi-Tech Park, in which member technology companies are 100% exempt from Belarusian income tax (which as of the date of this annual report was 18%) and from the value added tax for a period of 15 consecutive years effective July 1, 2006 and leviedtaxed at aother reduced raterates on a variety of other taxes. Our subsidiary in Russia benefits from a substantially reduced rate on social contributions and an exemption on value added tax in certain circumstances, which is a benefit to qualified IT companies in Russia. If these tax benefits are changed, terminated, not extended or comparable new tax incentives are not introduced, we expect that our effective income tax rate and/or our operating expenses would increase significantly, which could materially adversely affect our financial condition and results of operations. See “Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations — Provision for Income Taxes.”

There may be adverse tax and employment law consequences if the independent contractor status of some of our IT professionalspersonnel or the exempt status of our employees is successfully challenged.
SomeCertain of our IT professionalspersonnel are retained as independent contractors. Although we believe that we have properly classified these individuals as independent contractors there is nevertheless a risk that the IRS or another federal, state, provincial or foreign authority will take a different view. Furthermore, the tests governing the determination ofin several countries. The criteria to determine whether an individual is considered an independent contractor or an employee are typically fact sensitive and vary from jurisdiction toby jurisdiction, as can the interpretation of the applicable laws. If a government authority or court enacts legislation or adopts regulations that change these classification tests or makes any adverse determination with respect to some or all of our independent contractors, we could incur significant costs, including for prior periods, in respect of tax withholding, social security taxes or payments, workers’ compensation and unemployment contributions, and recordkeeping, or we may be required to modify our business model, any of which could materially adversely affect our business, financial condition and results of operations. There is also a risk that we may be subject to significant monetary liabilities arising from fines or judgments as a result of any such actual or alleged non-compliance with applicable laws in this area. Further, if it were determined that any of our independent contractors should be treated as employees, we could possibly incur additional liabilities under our applicable employee benefit plans.
In addition, we have classified nearly all ofclassify our U.S. employees as “exempt” or “non-exempt” under the Federal Labor Standards Act or(“FLSA”), and the FLSA.FLSA criteria for these classifications are subject to change from time to time. If it were determined that any of our U.S. employees should be classified as “non-exempt” under the FLSA, we may incur costs and liabilities for back wages, unpaid overtime, fines or penalties and/or be subject to employee litigation.
Our insurance coverage may be inadequate to protect us against losses.
Although we maintain some insurance coverage, including professional liability insurance, property insurance coverage for certain of our facilities and equipment and business interruption insurance coverage for certain of our operations, we do not insure for all risks in our operations. If any claims for injury are brought against us, or if we experience any business disruption, litigation or natural disaster, we might incur substantial costs and diversion of resources.
Most of the agreements we have entered into with our clients require us to purchase and maintain specified insurance coverage during the terms of the agreements, including commercial general insurance or public liability insurance, umbrella insurance, product liability insurance, and workers’ compensation insurance. Some of these types of insurance are not available on reasonable terms or at all in some countries in which we operate. Although to date no client has brought any claims against us for such failure, our clients have the right to terminate these agreements as a result of such failure.

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The banking and financial systems in less developed markets where we hold funds remain less developed than those in some more developed markets, and a banking crisis could place liquidity constraints on our business and materially adversely affect our business and financial condition.
Banking and other financial systems in the CIS are less developed and regulated than in some more developed markets, and legislation relating to banks and bank accounts is subject to varying interpretations and inconsistent application. Banks in the CIS generally do not meet the banking standards of more developed markets, and the transparency of the banking sector lags behind international standards. Furthermore, in Russia, Belarus and other CIS countries, bank deposits made by corporate entities generally are not insured. As a result, the banking sector remains subject to periodic instability. Another banking crisis, or the bankruptcy or insolvency of banks through which we receive or with which we hold funds, particularly in Belarus, may result in the loss of our deposits or adversely affect our ability to complete banking transactions in that region, which could materially adversely affect our business and financial condition.
Our business could be negatively affected if we incur legal liability, including with respect to our indemnification obligations, in connection with providing our solutions and services.
If we fail to meet our contractual obligations or otherwise breach obligations to our clients, we could be subject to legal liability. We may enter into non-standard agreements because we perceive an important economic opportunity or because our personnel did not adequately adhere to our guidelines. In addition, the contracting practices of our competitors may cause contract terms and conditions that are unfavorable to us to become standard in the marketplace. If we cannot or do not perform our obligations, we could face legal liability and our contracts might not always protect us adequately through limitations on the scope and/or amount of our potential liability. As a result, we might face significant legal liability and payment obligations, and our financial condition and results of operations could be materially adversely affected.
We may not be able to prevent unauthorized use of our intellectual property, and our intellectual property rights may not be adequate to protect our business and competitive position.
We rely on a combination of copyright, trademark, unfair competition and trade secret laws, as well as intellectual property assignment and confidentiality agreements and other methods to protect our intellectual property rights. Protection of intellectual property rights and confidentiality in some countries in which we operate may not be as effective as that in the United States or other countries with more mature legal systems.

We require our employees and independent contractors to enter into written agreements with us upon the commencement of their relationship with us, which assign to EPAM all intellectual property and work product made, developed or conceived by them in connection with their employment or engagement with us. These agreements also provide that any confidential or proprietary information disclosed or otherwise made available by us be kept confidential. We also enter into confidentiality and non-disclosure agreements with our clients and certain vendors. These agreements may not provide meaningful protection for trade secrets, know-how or other proprietary information in the event of any unauthorized use, misappropriation or disclosure of such trade secrets, know-how or other proprietary information. The steps we have taken may be inadequate to prevent the misappropriation of our and our clients’ proprietary technology. Reverse engineering, unauthorized copying or other misappropriation of our and our clients’ proprietary technologies, tools and applications could enable third parties to benefit from our or our clients’ technologies, tools and applications without paying us for doing so, and our clients may hold us liable for that act and seek damages and compensation from us, which could harm our business and competitive position.
We rely on our trademarks, trade names, service marks and brand names to distinguish our services and solutions from the services of our competitors, and have registered or applied to register many of these trademarks. We cannot assure you that our trademark applications will be approved. Third parties may oppose our trademark applications, or otherwise challenge our use of our trademarks. In the event that our trademarks are successfully challenged, we could be forced to rebrand our services and solutions, which could result in loss of brand recognition, and could require us to devote resources to advertising and marketing new brands. Further, we cannot assure youprovide assurance that competitors will not infringe our trademarks, or that we will have adequate resources to enforce our trademarks.
We may need to enforce our intellectual property rights through litigation. Litigation relating to our intellectual property may not prove successful and might result in substantial costs and diversion of resources and management attention.
In addition, we rely on certain third-party software to conduct our business. If we lose the licenses which permit us to use such software, they may be difficult to replace and it may be costly to do so.

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We may face intellectual property infringement claims that could be time-consuming and costly to defend. If we fail to defend ourselves against such claims, we may lose significant intellectual property rights and may be unable to continue providing our existing services.
Our success largely depends on our ability to use and develop our technology, tools, code, methodologies and services without infringing the intellectual property rights of third parties, including patents, copyrights, trade secrets and trademarks. We may be subject to litigation involving claims of patent infringement or violation of other intellectual property rights of third parties.
We typically indemnify clients who purchase our services and solutions against potential infringement of intellectual property rights, which subjects us to the risk of indemnification claims. These claims may require us to initiate or defend protracted and costly litigation on behalf of our clients, regardless of the merits of these claims and are often not subject to liability limits or exclusion of consequential, indirect or punitive damages. If any of these claims succeed, we may be forced to pay damages on behalf of our clients, redesign or cease offering our allegedly infringing services or solutions, or obtain licenses for the intellectual property that such services or solutions allegedly infringe. If we cannot obtain all necessary licenses on commercially reasonable terms, our clients may be forced to stop using our services or solutions.
The holders of patents and other intellectual property rights potentially relevant to our service offerings may make it difficult for us to acquire a license on commercially acceptable terms. In addition, we may be unaware of intellectual property registrations or applications relating to our services that may give rise to potential infringement claims against us. There may also be technologies licensed to and relied on by us that are subject to infringement or other corresponding allegations or claims by third parties, which may damage our ability to rely on such technologies.
Further, our current and former employees and/or subcontractors could challenge our exclusive rights in the software they have developed in the course of their employment. In Russia and certain other countries in which we operate, an employer is deemed to own the copyright in works created by its employees during the course, and within the scope, of their employment, but the employer may be required to satisfy additional legal requirements in order to make further use and dispose of such works. While we believe that we have complied with all such requirements, and have fulfilled all requirements necessary to acquire all rights in software developed by our independent contractors and/or subcontractors, these requirements are often ambiguously defined and enforced. As a result, we cannot assure that we would be successful in defending against any claim by our current or former employees, independent contractors and/or subcontractors challenging our exclusive rights over the use and transfer of works those employees, independent contractors and/or subcontractors created or requesting additional compensation for such works.

Parties making infringement claims may be able to obtain an injunction to prevent us from delivering our services or using technology involving the allegedly infringing intellectual property. Intellectual property litigation is expensive, time-consuming and could divert management’s attention from our business. A successful infringement claim against us, whether with or without merit, could, among others things, require us to pay substantial damages, develop non-infringing technology, or rebrand our name or enter into royalty or license agreements that may not be available on acceptable terms, if at all, and would require us to cease making, licensing or using products that have infringed a third party’s intellectual property rights. Protracted litigation could also result in existing or potential clients deferring or limiting their purchase or use of our software product development services or solutions until resolution of such litigation, or could require us to indemnify our clients against infringement claims in certain instances. Any of these actions, regardless of the outcome of litigation or merits of the claim, could damage our reputation and materially adversely affect our business, financial condition and results of operations.
We are subject to laws and regulations in the United States and other countries in which we operate, including export restrictions, economic sanctions and the Foreign Corrupt Practices Act, or FCPA, and similar anti-corruption laws. If we are not in compliance with applicable legal requirements, we may be subject to civil or criminal penalties and other remedial measures.
As a company with international operations, we are subject to many laws and regulations restricting our operations, including activities involving restricted countries, organizations, entities and persons that have been identified as unlawful actors or that are subject to U.S. sanctions imposed by the Office of Foreign Assets Control, or OFAC, or other international sanctions that prohibit us from engaging in trade or financial transactions with certain countries, businesses, organizations and individuals. We are subject to the FCPA, which prohibits U.S. companies and their intermediaries from bribing foreign officials for the purpose of obtaining or keeping business or otherwise obtaining favorable treatment, and other laws concerning our international operations. The FCPA’s foreign counterparts contain similar prohibitions, although varying in both scope and jurisdiction and not limited to transactions with government officials. We operate in many parts of the world that have experienced governmental corruption to some degree, and, in certain circumstances, strict compliance with anti-bribery laws may conflict with local customs and practices.practices, although adherence to local customs and practices is generally not a defense under U.S. and other anti-bribery laws.

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We have a compliance program with controls and procedures designed to ensure our compliance with the FCPA, OFAC sanctions, and similar sanctions, laws and regulations. The continuing implementation and ongoing development and monitoring of such program may be time consuming and expensive, and could result in the discovery of issues or violations with respect to the foregoing by us or our employees, independent contractors, subcontractors or agents of which we were previously unaware.
Any violations of these or other laws, regulations and procedures by our employees, independent contractors, subcontractors and agents could expose us to administrative, civil or criminal penalties, fines or business restrictions, which could have a material adverse effect on our results of operations and financial condition and would adversely affect our reputation and the market for shares of our common stock and may require certain of our investors to disclose their investment in our company under certain state laws.
Anti-outsourcing legislation and restrictions on immigration, if adopted, may affect our ability to compete for and provide services to clients in the United States or other countries, which could hamper our growth and cause our revenues to decline.
The majority of our employees are nationals of CIS and CEE countries, and in 2015, we added significant headcount in India.countries. Some of our projects require a portion of the work to be undertaken at our clients’ facilities, which are sometimes located outside the CIS, CEE and India.CEE. The ability of our employees to work in necessary locations around the world depends on their ability to obtain the required visas and work permits, and this process can be lengthy and difficult. Immigration laws are subject to legislative change, as well as to variations in standards of application and enforcement due to political forces and economic conditions.
In addition, the issue of companies outsourcing services to organizations operating in other countries is a topic of political discussion in many countries, including the United States, which is our largest source of revenues. Many organizations and public figures in the United States and Europe have publicly expressed concern about a perceived association between offshore outsourcing IT services providers and the loss of jobs in their home countries, and there are legislative measures under consideration in the U.S. Congress and in various state legislatures to address this concern. It is possible that pending legislation in the United States regarding offshore outsourcing may impose restrictions on our ability to deploy employees holding U.S. work visas to client locations, which could adversely impact our business. It is generally difficult to predict the political and economic events that could affect immigration laws, or the restrictive impact they could have on obtaining or maintaining business visas for our employees. However, if enacted, such measures may broaden restrictions on outsourcing by federal and state government agencies and on government contracts with firms that outsource services directly or indirectly, impact private industry with measures such as tax disincentives or intellectual property transfer restrictions, and/or restrict the use of certain work visas.

Our reliance on visas for a number of employees makes us vulnerable to such changes and variations as it affects our ability to staff projects with employees who are not citizens of the country where the work is to be performed. We may not be able to obtain a sufficient number of visas for our employees or we may encounter delays or additional costs in obtaining or maintaining such visas, in which case we may not be able to provide services to our clients on a timely and cost-effective basis or manage our sales and delivery centers as efficiently as we otherwise could, any of which could hamper our growth and cause our revenues to decline.
A recent U.S. executive order titled “Protecting the Nation From Foreign Terrorist Entry Into the United States” restricts entry into the United States of non-U.S. nationals from a number of enumerated countries in the Middle East and suspends a visa interview waiver program that was in place at U.S. consulates worldwide. While the travel restrictions do not extend to nationals of CIS and CEE countries, it is possible that there could be delays in visa processing before CIS and CEE nationals can enter into the United States and their wait times for visa interviews may increase significantly.  Wait times could also be impacted by a recently announced U.S. federal government hiring freeze. Delays in the process to obtain visas may result in delays in the ability of our personnel to travel to meet with our clients, provide services to our clients or to continue to provide services on a timely basis, which could have a material adverse effect on our business, results of operations, financial condition and cash flows.
Similarly, legislation enacted in certain European jurisdictions and any future legislation in European jurisdictions or any other country in which we have clients restricting the performance of services from an offshore location could also materially adversely affect our business, financial condition and results of operations. For example, legislation enacted in the United Kingdom, based on the 1977 EC Acquired Rights Directive, has been adopted in some form by many European Union countries, and provides that if a company outsources all or part of its business to an IT services provider or changes its current IT services provider, the affected employees of the company or of the previous IT services provider are entitled to become employees of the new IT services provider, generally on the same terms and conditions as their original employment. In addition, dismissals of employees who were employed by the company or the previous IT services provider immediately prior to that transfer are automatically considered unfair dismissals that entitle such employees to compensation. As a result, in order to avoid unfair dismissal claims, we may have to offer, and become liable for, voluntary redundancy payments to the employees of our clients who outsource business to us in the United Kingdom and other European Union countries who have adopted similar laws. This legislation could materially affect our ability to obtain new business from companies in the United Kingdom and European Union and to provide outsourced services to companies in the United Kingdom and European Union in a cost-effective manner.

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Our CIS subsidiaries can be forced into liquidation on the basis of formal noncompliance with certain legal requirements.
We operate in CIS countries primarily through locally organized subsidiaries. Certain provisions of Russian law and the laws of other CIS countries may allow a court to order liquidation of a locally organized legal entity on the basis of its formal noncompliance with certain requirements during formation, reorganization or during its operations. If the company fails to comply with certain requirements including those relating to minimum net assets, governmental or local authorities can seek the involuntary liquidation of such company in court, and the company’s creditors will have the right to accelerate their claims or demand early performance of the company’s obligations as well as demand compensation offor any damages. If involuntary liquidation of any of our subsidiaries were to occur, such liquidation could materially adversely affect our financial condition and results of operations.
We may need additional capital, and a failure by us to raise additional capital on terms favorable to us, or at all, could limit our ability to grow our business and develop or enhance our service offerings to respond to market demand or competitive challenges.
We believe that our current cash, cash flow from operations and revolving line of credit are sufficient to meet our anticipated cash needs for at least the next 12 months. We may, however, require additional cash resources due to changed business conditions or other future developments, including any investments or acquisitions we may decide to pursue. If these resources are insufficient to satisfy our cash requirements, we may seek to sell additional equity or debt securities or obtain another credit facility.facility, and we can’t be certain that such additional financing would be available on terms acceptable to us. The sale of additional equity securities could result in dilution to our stockholders. The incurrence of indebtedness would result in increased debt service obligations and could require us to agree to operating and financing covenants that would restrict our operations. Our ability to obtain additional capital on acceptable terms is subject to a variety of uncertainties, including:
investors’ perception of, and demand for, securities of IT services companies;
conditions of the United States and other capital markets in which we may seek to raise funds;
our future results of operations and financial condition;
government regulation of foreign investment in the CIS and CEE and other countries in which we operate or in which we plan to expand; and
economic, political and other conditions both globally and in emerging markets.
Our stock price is volatile.
Our common stock has at times experienced substantial price volatility as a result of variations between our actual and anticipated financial results, announcements by our competitors and us, projections or speculation about our business or that of our competitors by the media or investment analysts or uncertainty about current global economic conditions. The stock market, as a whole, also has experienced extreme price and volume fluctuations that have affected the market price of many technology companies in ways that may have been unrelated to these companies’ operating performance. Furthermore, we believe our stock price should reflect future growth and profitability expectations and, if we fail to meet these expectations, our stock price may significantly decline.
Compliance with changing regulation of corporate governance and public disclosure may result in additional expense and affect our operations.
Changing laws, regulations and standards relating to corporate governance and public disclosure, including the Dodd-Frank Wall Street Reform and Consumer Protection Act, SEC regulations and New York Stock Exchange, or NYSE, rules, are creating uncertainty for companies such as ours. These new or changed laws, regulations and standards are subject to varying interpretations in many cases due to their lack of specificity, and as a result, their application in practice may evolve over time as new guidance is provided by regulatory and governing bodies, which could result in continuing uncertainty regarding compliance matters and higher costs necessitated by ongoing revisions to disclosure and corporate governance practices. As a result, our efforts to comply with evolving laws, regulations and standards have resulted in, and are likely to continue to result in, increased general and administrative expenses and a diversion of management time and attention from revenue-generating activities to compliance activities. If our efforts to comply with new or changed laws, regulations and standards differ from the activities intended by regulatory or governing bodies due to ambiguities related to practice, our reputation may be harmed.
Item 1B. Unresolved Staff Comments
None.
Item 2. Properties

24

Table of Contents

We are incorporated in Delaware with headquarters in Newtown, PA, with multiple delivery centers located in Belarus, Ukraine, Russia, Hungary, Kazakhstan, Bulgaria, China, Armenia, Poland, Czech Republic, Mexico, Austria and India, and client management locations in the United States, Canada, the United Kingdom, Germany, Sweden, Switzerland, Netherlands, Russia, Kazakhstan, Singapore, Hong Kong and Australia.
PA. The table below sets forth our principal properties:
Location 
Square Meters
Leased 
 
Square Meters
Owned 
 
Total Square
Meters 
 
Square Meters
Leased 
 
Square Meters
Owned 
 
Total Square
Meters 
Delivery Centers and Client Management Locations:            
Belarus 37,287
 21,669
 58,956
 63,059
 21,669
 84,728
Ukraine 32,452
 
 32,452
 38,855
   38,855
Russia 20,399
 
 20,399
 36,576
   36,576
Hungary 16,560
 
 16,560
 26,297
   26,297
Poland 16,894
   16,894
India 11,529
 
 11,529
 14,802
   14,802
China 10,044
   10,044
United States 6,868
 
 6,868
 7,331
   7,331
China 5,889
 
 5,889
Poland 4,990
 
 4,990
Bulgaria 3,244
   3,244
Czech Republic 2,851
   2,851
Kazakhstan 2,735
 
 2,735
 2,681
   2,681
Mexico 2,007
 
 2,007
 2,007
   2,007
Bulgaria 1,850
 
 1,850
Czech Republic 1,757
 
 1,757
United Kingdom 1,090
 
 1,090
 1,090
   1,090
Canada 810
 
 810
 978
   978
Switzerland 662
   662
Armenia 408
 
 408
 540
   540
Sweden 322
 
 322
 322
   322
Switzerland 112
 
 112
United Arab Emirates 73
   73
Germany 28
 
 28
 28
   28
Philippines 11
   11
Total 147,093
 21,669
 168,762
 228,345
 21,669
 250,014
Executive Office:            
Newtown, PA, United States 1,050
 
 1,050
 1,212
 
 1,212
Our facilities are used interchangeably among all of our segments. We believe that our existing facilities are adequate to meet our current requirements, and that suitable additional or substitute space will be available, if necessary.
Item 3. Legal Proceedings
From time to time, we are involved in litigation and claims arising out of our operations in the normal course of business. We are not currently a party to any material legal proceeding. In addition, we are not aware of any material legal or governmental proceedings against us, or contemplated to be brought against us.
Item 4. Mine Safety Disclosures
None.

PART II
Item 5. Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities
Market Information
Our common stock is traded on the New York Stock Exchange (NYSE)(“NYSE”) under the symbol “EPAM.”
Our shares have been publicly traded since February 8, 2012. The price range per share of common stock presented below represents the highest and lowest intraday sales prices for the Company’s common stock on the NYSE during each quarter of

25


the two most recent years.
2015    
2016    
Quarter Ended High  Low  High  Low 
December 31 $84.41
 $67.29
 $69.20
 $54.53
September 30 $76.69
 $63.37
 $71.79
 $61.47
June 30 $74.49
 $57.58
 $78.40
 $61.32
March 31 $63.50
 $45.27
 $78.04
 $54.88
2014    
2015    
Quarter Ended High  Low  High  Low 
December 31 $52.89
 $40.42
 $84.41
 $67.29
September 30 $44.36
 $36.81
 $76.69
 $63.37
June 30 $45.99
 $29.44
 $74.49
 $57.58
March 31 $46.70
 $31.34
 $63.50
 $45.27
As of February 10, 2016,2017, we had approximately 3628 stockholders of record of our common stock. The number of record holders does not include holders of shares in “street name” or persons, partnerships, associations, corporations or other entities identified in security position listings maintained by depositories.
Dividend Policy
We have not declared or paid any cash dividends on our common stock and currently do not anticipate paying any cash dividends in the foreseeable future. Instead, we intend to retain all available funds and any future earnings for use in the operation and expansion of our business. Any future determination relating to our dividend policy will be made at the discretion of our boardBoard of directorsDirectors and will depend on our future earnings, capital requirements, financial condition, future prospects, applicable Delaware law, which provides that dividends are only payable out of surplus or current net profits, and other factors that our boardBoard of directorsDirectors deems relevant. In addition, our revolving credit facility restricts our ability to make or pay dividends (other than certain intercompany dividends) unless no potential or actual event of default has occurred or would be triggered.triggered thereby.
Equity Compensation Plan Information
See “Item 12. Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters” in Part III of this annual reportAnnual Report for our equity compensation plan information.
Performance Graph
The following graph compares the cumulative total stockholder return on our common stock with the cumulative total return on the S&P 500 Index and a Peer Group Index (capitalization weighted) for the period beginning February 8, 2012, which is the date of our initial public offering, and ending on the last day of our last completed fiscal year. The stock performance shown on the graph below is not indicative of future price performance. The following performance graph and related information shall not be deemed “soliciting material” or to be “filed” with the SEC, nor shall information be incorporated by reference into any future filing under the Securities Act of 1933 or Securities Exchange Act of 1934, each as amended, except to the extent that we specifically incorporate it by reference into such filing.

26


COMPARISON OF CUMULATIVE TOTAL RETURN (1)(2) 
Among EPAM, the S&P 500 Index and a Peer Group Index(3) (Capitalization Weighted)
 Company / Index  Company / Index 
Base Period 
EPAM Systems,
Inc. 
 
S&P 500
Index 
 
Peer Group
Index 
 
EPAM Systems,
Inc. 
 
S&P 500
Index 
 
Peer Group
Index 
12/31/2016 $459.36
 $165.84
 $121.34
9/30/2016 $495.07
 $160.62
 $120.39
6/30/2016 $459.36
 $155.48
 $142.02
3/31/2016 $533.36
 $152.58
 $150.74
12/31/2015 $561.57
 $151.41
 $140.47
 $561.57
 $151.41
 $139.88
9/30/2015 $532.29
 $142.23
 $151.74
 $532.29
 $142.23
 $149.62
6/30/2015 $508.79
 $152.83
 $139.89
 $508.79
 $152.83
 $140.50
3/31/2015 $437.79
 $153.18
 $148.89
 $437.79
 $153.18
 $149.56
12/31/2014 $341.07
 $152.52
 $127.74
 $341.07
 $152.52
 $127.74
9/30/2014 $312.79
 $146.10
 $120.55
 $312.79
 $146.10
 $120.55
6/30/2014 $312.50
 $145.21
 $118.41
 $312.50
 $145.21
 $118.41
3/31/2014 $235.00
 $138.70
 $124.76
 $235.00
 $138.70
 $124.76
12/31/2013 $249.57
 $136.92
 $124.18
 $249.57
 $136.92
 $124.18
9/30/2013 $246.43
 $124.56
 $103.03
 $246.43
 $124.56
 $103.03
6/30/2013 $194.14
 $118.99
 $80.39
 $194.14
 $118.99
 $80.39
3/31/2013 $165.93
 $116.24
 $99.89
 $165.93
 $116.24
 $99.89
12/31/2012 $129.29
 $105.65
 $85.86
 $129.29
 $105.65
 $85.86
9/30/2012 $135.29
 $106.72
 $89.48
 $135.29
 $106.72
 $89.48
6/30/2012 $121.36
 $100.90
 $83.91
 $121.36
 $100.90
 $83.91
3/31/2012 $146.57
 $104.33
 $102.94
 $146.57
 $104.33
 $102.94
2/8/2012 $100
 $100
 $100
 $100
 $100
 $100
  
(1)Graph assumes $100 invested on February 8, 2012, in our common stock, the S&P 500 Index, and the Peer Group Index (capitalization weighted).
(2)Cumulative total return assumes reinvestment of dividends.
(3)We have constructed a Peer Group Index of other information technology consulting firms consisting of Virtusa Corporation (NASDAQ:VRTU), Cognizant Technology Solutions Corp. (NASDAQ:CTSH), Globant S.A. (NASDAQ:GLOB), Infosys Ltd ADR (NYSE:INFY), Luxoft Holding, Inc (NASDAQ:LXFT), Syntel, Inc. (NASDAQ:SYNT), and Wipro Ltd. (ADR) (NYSE:WIT).

27


Unregistered Sales of Equity Securities
There were no unregistered sales of equity securities by the Company during the year ended December 31, 2015.2016.
Purchases of Equity Securities by the Issuer and Affiliated Purchasers
There were no purchases of equity securities by the issuer and affiliated purchasers during the quarterly period ended December 31, 2015.2016.
Item 6. Selected Financial Data
The following table represents the selected financial data for each of the last five fiscal years. Our historical results are not necessarily indicative of the results to be expected for any future period. The following selected financial data should be read in conjunction with “Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations” and our consolidated financial statements and related notes included elsewhere in this annual report.
Year Ended December 31
Year Ended December 31
2015 2014 2013 2012 20112016 2015 2014 2013 2012
(in thousands, except per share data)
(in thousands, except per share data)
Consolidated Income Statement Data:         
Consolidated Statement of Income Data:         
Revenues$914,128
 $730,027
 $555,117
 $433,799
 $334,528
$1,160,132
 $914,128
 $730,027
 $555,117
 $433,799
Operating expenses:       
  
       
  
Cost of revenues (exclusive of depreciation and amortization)566,913
 456,530
 347,650
 270,361
 205,336
737,186
 566,913
 456,530
 347,650
 270,361
Selling, general and administrative expenses222,759
 163,666
 116,497
 85,868
 64,930
264,658
 222,759
 163,666
 116,497
 85,868
Depreciation and amortization expense17,395
 17,483
 15,120
 10,882
 7,538
23,387
 17,395
 17,483
 15,120
 10,882
Goodwill impairment loss
 2,241
 
 
 1,697

 
 2,241
 
 
Other operating expenses/(income), net1,094
 3,924
 (643) 682
 19
1,205
 1,094
 3,924
 (643) 682
Income from operations105,967
 86,183
 76,493
 66,006
 55,008
133,696
 105,967
 86,183
 76,493
 66,006
Interest and other income, net4,731
 4,769
 3,077
 1,941
 1,422
4,848
 4,731
 4,769
 3,077
 1,941
Change in fair value of contingent consideration
 (1,924) 
 
 

 
 (1,924) 
 
Foreign exchange loss(4,628) (2,075) (2,800) (2,084) (3,638)(12,078) (4,628) (2,075) (2,800) (2,084)
Income before provision for income taxes106,070
 86,953
 76,770
 65,863
 52,792
126,466
 106,070
 86,953
 76,770
 65,863
Provision for income taxes21,614
 17,312
 14,776
 11,379
 8,439
27,200
 21,614
 17,312
 14,776
 11,379
Net income$84,456
 $69,641
 $61,994
 $54,484
 $44,353
$99,266
 $84,456
 $69,641
 $61,994
 $54,484
Net income per share of common stock(1):
   
  
  
  
   
  
  
  
Basic$1.73
 $1.48
 $1.35
 $1.27
 $0.69
$1.97
 $1.73
 $1.48
 $1.35
 $1.27
Diluted$1.62
 $1.40
 $1.28
 $1.17
 $0.63
$1.87
 $1.62
 $1.40
 $1.28
 $1.17
Shares used in calculation of net income per share of common stock:   
  
  
  
Shares used in calculation of net income per share:   
  
  
  
Basic48,721
 47,189
 45,754
 40,190
 17,094
50,309
 48,721
 47,189
 45,754
 40,190
Diluted51,986
 49,734
 48,358
 43,821
 20,473
53,215
 51,986
 49,734
 48,358
 43,821
  
(1)In connection with the completion of our initial public offering, we effected an 8-for-1 common stock split as of January 19, 2012. All historical common stock and per share information has been changed to reflect the common stock split.

28


 
As of December 31
 
As of December 31
 2015 2014 2013 2012 2011 2016 2015 2014 2013 2012
 
(in thousands)
 
(in thousands)
Consolidated Balance Sheet Data:                    
Cash and cash equivalents $199,449
 $220,534
 $169,207
 $118,112
 $88,796
 $362,025
 $199,449
 $220,534
 $169,207
 $118,112
Time deposits 30,181
 
 
 
 
 403
 30,181
 
 
 
Accounts receivable, net 174,617
 124,483
 95,431
 78,906
 59,472
 199,982
 174,617
 124,483
 95,431
 78,906
Unbilled revenues 95,808
 55,851
 43,108
 33,414
 24,475
 63,325
 95,808
 55,851
 43,108
 33,414
Property and equipment, net 60,499
 55,134
 53,315
 53,135
 35,482
 73,616
 60,499
 55,134
 53,315
 53,135
Total assets 778,536
 594,026
 432,877
 350,814
 235,613
 925,811
 778,536
 594,026
 432,877
 350,814
Accrued expenses and other liabilities 60,384
 32,203
 20,175
 19,814
 24,782
Deferred revenue 3,047
 3,220
 5,076
 7,632
 6,949
Long-term debt 25,048
 35,000
 
 
 
Total liabilities 165,313
 129,976
 56,776
 64,534
 54,614
 144,399
 165,313
 129,976
 56,776
 64,534
Total stockholders’ equity 613,223
 464,050
 376,101
 286,280
 95,059
 781,412
 613,223
 464,050
 376,101
 286,280
Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations
You should read the following discussion and analysis of our financial condition and results of operations together with our audited consolidated financial statements and the related notes included elsewhere in this annual report. In addition to historical information, this discussion contains forward-looking statements that involve risks, uncertainties and assumptions that could cause actual results to differ materially from management’s expectations. Factors that could cause such differences are discussed in the sections entitled “Special Note Regarding Forward-Looking Statements” and “Item 1A. Risk Factors.” We assume no obligation to update any of these forward-looking statements.
Executive Summary
We are a leading global provider of product development and software engineering solutions offering specialized technological consulting to many of the world’s leading organizations. Our clients depend on us to solve their complex technical challenges and rely on our expertise in core engineering, advanced technology, digital engagement and intelligent enterprise development. We are continuously venturing into new industries to expand our core industry client base in software and technology, financial services, media and entertainment, travel and hospitality,consumer, retail and distribution and life sciences and healthcare. Our teams of developers, architects, strategists, engineers, designers, and product experts have the capabilities and skill sets to deliver business results.
Our global delivery model and centralized support functions combined with the benefits of scale from the shared use of fixed-cost resources enhance our productivity levels and enable us to better manage the efficiency of our global operations. As a result, we have created a delivery base whereby our applications, tools, methodologies and infrastructure allowThis model allows us to seamlessly deliver services and solutions from our delivery centers to global clients across all geographies, further strengthening our relationships with them.
Through increased specialization in focused verticals and a continued emphasis on strategic partnerships, we are leveragingLeveraging our roots in software engineering, to grow asalong with our vertical expertise and strong strategic partnerships, we have become a recognized brand in software development and end-to-end digital transformation services for our clients.
Overview of 20152016 and Financial Highlights
DuringFor the year ended December 31, 2015, total revenues were $914.1 million, an increase of approximately 25.2% over $730.0 million reported for the same period a year ago. Our revenue grew in North America, Europe and APAC geographies both organically and through acquisitions. Our performance remained strong across our key verticals, with the Life Sciences and Healthcare vertical emerging rapidly and showing growth of 72.8% during the year ended December 31, 2015, compared to the year ended December 31, 2014.
We remain committed to maintaining and improving a well-balanced portfolio of clients and seek to grow revenues from our existing clients by continually expanding the scope and size of our engagements, as well as by growing our key client base through business development efforts and strategic acquisitions. During 2015, we made progress in this strategy and increased the reach of our offerings, both geographically and across industry verticals. During 2015, our top five and top ten customers accounted for 32.6% and 43.8% of consolidated revenues, respectively.


29


We continued our growth through strategic acquisitions in 2015.  Through the July 2015 acquisition of NavigationArts we added approximately 90 U.S.-based design consultants to EPAM’s headcount.  The addition of NavigationArts enhances our digital consulting, architecture and content solutions practice. In November 2015, we acquired AGS, establishing EPAM’s presence in India with over 1,000 IT professionals to enhance our software product development services and test automation services offerings.  We expect these investments in EPAM’s strategic growth to result in expanded service offerings and abilities for our clients.
Summary of Results of Operations and Non-GAAP Financial Measures
The following table presents a summary of our results of operations for the years ended December 31, 2015, 2014 and 2013:
 Year Ended December 31,
 2015 2014 2013
 (in millions, except percentages) 
Revenues$914.1
 100.0% $730.0
 100.0% $555.1
 100.0%
Income from operations106.0
 11.6
 86.2
 11.8
 76.5
 13.8
Net income84.5
 9.2
 69.6
 9.5
 62.0
 11.2
For 2015,2016, we reported results of operations consistent with the continued execution of our strategy. During 2015, ourOur operating expenses increased in line with our increase in revenues as we continue to invest in our people, processes and infrastructure to support our goal to deliver high-quality offerings that meet the needs of our customers, differentiate our value proposition from that of our competition, and drive scale and growth.

The following table presents a summary of our results of operations for the years ended December 31, 2016, 2015 and 2014:
 Year Ended December 31,
 2016 2015 2014
 (in millions, except percentages and per share data) 
Revenues$1,160.1
 100.0% $914.1
 100.0% $730.0
 100.0%
Income from operations$133.7
 11.5% $106.0
 11.6% $86.2
 11.8%
Net income$99.3
 8.6% $84.5
 9.2% $69.6
 9.5%
            
Effective tax rate21.5%   20.4%   19.9%  
Diluted earnings per share$1.87
   $1.62
   $1.40
  
The key highlights of our consolidated results for 20152016 were as follows:
The European segment continued its strong performance, generatingWe recorded revenues of $1.16 billion, or a 26.9% increase from $914.1 million reported last year, making fiscal 2016 a milestone year, having crossed the $1 billion revenue mark. Revenue growth excluding acquisitions, which accounted for 5.4% of $101.2 million during the year ended December 31, 2015, or 33.8% over 2014;
Revenue increased in all our key verticals in 2015 as compared to 2014, specifically within the Software and Hi-Tech and Travel and Consumer verticals, which grew $35.0 million and $57.5 million respectively.total growth, was 21.5% despite significant currency headwinds.
Income from operations grew 23.0% during26.2% to $133.7 million from $106.0 million reported in the year ended December 31, 2015, over 2014, while income from operationscorresponding period of last year. Expressed as a percentage of revenues, decreased by 0.2%. Theincome from operations was 11.5% compared to 11.6% last year. A slight decrease was due to a combination of factors, including an increase of $21.2 million in stock-based compensation expenseprimarily driven by increasesfluctuations in headcount and acquisitions.utilization.
Our effective tax rate was 21.5% compared to 20.4% last year.
Net income increased by 21.3% during 2015grew 17.5% to $99.3 million compared with 2014.to $84.5 million reported in 2015. Expressed as a percentage of revenues, net income remained consistent despite the adverse effect of adecreased 0.6% compared to last year, which was largely driven by higher effective tax rate and significant foreign exchange rate changeslosses reported in 2015 as compared2016.
Diluted earnings per share increased 15.4% to 2014.$1.87 for the year ended December 31, 2016 from $1.62 reported in 2015.
Our organic growth was complementedCash provided by two strategic acquisitions completedoperations increased $88.4 million, or 115.7%, to $164.8 million during 2015,fiscal 2016.
During 2016, we continued to expand our global delivery footprint which expandedbrought very important hands-on experience in several new geographies.This allowed us to better understand how to integrate and develop, from one side, and position and benefit, from another, such new global delivery locations within the company and within our highly skilled employee base, geographic footprintclients. We are confident that our strategy of combining our traditional technology and service capabilities. Through acquisitions, we addedengineering advantage with proven capabilities in digital transformation, design, as well as a delivery center in India.and emerging consultancy should enable us to navigate considerable market, geo-political and economic uncertainties.
The operating results in any period are not necessarily indicative of the results that may be expected for any future period.
Critical Accounting Policies
We have significant international operations,prepare our consolidated financial statements in accordance with U.S. generally accepted accounting principles (“GAAP”), which require us to make judgments, estimates and we earn revenuesassumptions that affect: (i) the reported amounts of assets and incur expenses in multiple currencies. When important to management’s analysis, operating results are compared in “constant currency terms”, a non-GAAP financial measure that excludesliabilities, (ii) disclosure of contingent assets and liabilities at the effectend of foreign currency exchange rate fluctuations. The effecteach reporting period and (iii) the reported amounts of rate fluctuations is excluded by translating the current period’s revenues and expenses into U.S. dollarsduring each reporting period. We evaluate these estimates and assumptions based on historical experience, knowledge and assessment of current business and other conditions, and expectations regarding the future based on available information and reasonable assumptions, which together form a basis for making judgments about matters not readily apparent from other sources. Since the use of estimates is an integral component of the financial reporting process, actual results could differ from those estimates. Some of our accounting policies require higher degrees of judgment than others in their application. When reviewing our audited consolidated financial statements, you should consider (i) our selection of critical accounting policies, (ii) the judgment and other uncertainties affecting the application of such policies and (iii) the sensitivity of reported results to changes in conditions and assumptions. We consider the policies discussed below to be critical to an understanding of our consolidated financial statements as their application places significant demands on the judgment of our management.

An accounting policy is considered critical if it requires an accounting estimate to be made based on assumptions about matters that are highly uncertain at the weighted average exchange ratestime the estimate is made, and if different estimates that reasonably could have been used, or changes in the accounting estimates that are reasonably likely to occur periodically, could materially impact the consolidated financial statements. We believe that the following critical accounting policies are the most sensitive and require more significant estimates and assumptions used in the preparation of our consolidated financial statements. You should read the following descriptions of critical accounting policies, judgments and estimates in conjunction with our audited consolidated financial statements and other disclosures included elsewhere in this annual report.
Revenues — We recognize revenue when realized or realizable and earned, which is when the following criteria are met: persuasive evidence of an arrangement exists; delivery has occurred; the sales price is fixed or determinable; and collectability is reasonably assured. Determining whether and when some of these criteria have been satisfied often involves assumptions and judgments that can have a significant impact on the timing and amount of revenue we report. If there is an uncertainty about the project completion or receipt of payment for the services, revenues are deferred until the uncertainty is sufficiently resolved. At the time revenues are recognized, we provide for any contractual deductions and reduce revenues accordingly. We defer amounts billed to our clients for revenues not yet earned. Such amounts are anticipated to be recorded as revenues as services are performed in subsequent periods. Unbilled revenues represent services provided which are billed subsequent to the period end in accordance with the contract terms.
We derive our revenues from a variety of service offerings, which represent specific competencies of our IT professionals. Contracts for these services have different terms and conditions based on the scope, deliverables, and complexity of the prior periodengagement, which require management to make judgments and estimates in determining appropriate revenue recognition. Fees for these contracts may be in the form of comparison. See Item 7A, “Quantitative and Qualitative Disclosures About Market Risk” of this report for a discussiontime-and-materials or fixed-price arrangements.
The majority of our exposurerevenues (88.2% of revenues in 2016, 85.8% in 2015 and 84.7% in 2014) are generated under time-and-material contracts whereby revenues are recognized as services are performed with the corresponding cost of providing those services reflected as cost of revenues when incurred. The majority of such revenues are billed on an hourly, daily or monthly basis whereby actual time is charged directly to exchange rates.


30


EffectsRevenues from fixed-price contracts (10.4% of Inflationrevenues in 2016, 12.8% in 2015 and 13.6% in 2014) are determined using the proportional performance method. In instances where final acceptance of the product, system, or solution is specified by the client, revenue is deferred until all acceptance criteria have been met. In absence of a sufficient basis to measure progress towards completion, revenue is recognized upon receipt of final acceptance from the client. The complexity and judgment of our estimation process and issues related to the assumptions, risks and uncertainties inherent in the application of the proportional performance method of accounting could affect the amounts of revenue, receivables and deferred revenue at each reporting period.
EconomiesBusiness Combinations — We account for our business combinations using the acquisition accounting method, which requires us to determine the fair value of net assets acquired and the related goodwill and other intangible assets in CIS countries, particularly Belarus, Russia, Kazakhstanaccordance with the FASB ASC Topic 805, “Business Combinations.” We identify and Ukraine, have periodically experienced highattribute fair values and estimated lives to the intangible assets acquired and allocate the total cost of an acquisition to the underlying net assets based on their respective estimated fair values. Determining the fair value of assets acquired and liabilities assumed requires management’s judgment and involves the use of significant estimates, including projections of future cash inflows and outflows, discount rates, asset lives and market multiples. There are different valuation models for each component, the selection of inflation. Periodswhich requires considerable judgment. These determinations will affect the amount of higher inflation may slow economic growthamortization expense recognized in those countriesfuture periods. We base our fair value estimates on assumptions we believe are reasonable, but recognize that the assumptions are inherently uncertain.
If initial accounting for the business combination has not been completed by the end of the reporting period in which the business combination occurs, provisional amounts are reported to present information about facts and circumstances that existed as of the acquisition date. Once the measurement period ends, which in no case extends beyond one year from the acquisition date, revisions of the accounting for the business combination are recorded in earnings.
Goodwill and Other Intangible Assets — The acquired assets typically include customer relationships, trade names, non-competition agreements, and workforce. As a result, decrease demanda substantial portion of the purchase price is allocated to goodwill and other intangible assets.

We assess goodwill for impairment as of October 31st of each fiscal year, or more frequently if events or changes in circumstances indicate that the fair value of our reporting unit has been reduced below its carrying value. When conducting our annual goodwill impairment assessment, we use a three-step process. The first step is to perform an optional qualitative evaluation as to whether it is more likely than not that the fair value of our reporting unit is less than its carrying value, using an assessment of relevant events and circumstances. In performing this assessment, we are required to make assumptions and judgments including but not limited to an evaluation of macroeconomic conditions as they relate to our business, industry and market trends, as well as the overall future financial performance of our reporting unit and future opportunities in the markets in which it operates. If we determine that it is not more likely than not that the fair value of our reporting unit is less than its carrying value, we are not required to perform any additional tests in assessing goodwill for impairment. However, if we conclude otherwise or elect not to perform the qualitative assessment, we perform a second step for our services and negatively impactreporting unit, consisting of a quantitative assessment of goodwill impairment. This quantitative assessment requires us to estimate the businessfair value of our existing clients. Inflation is likelyreporting unit and compare the estimated fair value to increase some of our expenses, which may reduce our profitability, as we may not be able to pass these increases on to our clients. Generally, our largest expense that could be impacted by inflation is wages. We do not rely on borrowed funds for operations in those locations; therefore, increases in interest rates typical for inflationary environments do not currently pose a risk to our business.
Ukraine has been experiencing political and economic turmoil with no improvementits respective carrying value (including goodwill) as of the date of the impairment test. The third step, employed for our reporting unit if it fails the second step, is used to measure the amount of any potential impairment and compares the implied fair value of our reporting unit with the carrying amount of goodwill.
Historically, a significant portion of the purchase consideration was allocated to customer relationships. In valuing customer relationships, we typically utilize the multi-period excess earnings method, a form of the income approach. The principle behind this report, severely impactingmethod is that the Ukrainian economy.value of the intangible asset is equal to the present value of the after-tax cash flows attributable to the intangible asset only. We amortize our intangible assets that have finite lives using either the straight-line method or, if reliably determinable, the pattern in which the economic benefit of the asset is expected to be consumed utilizing expected discounted future cash flows. Amortization is recorded over the estimated useful lives that are predominantly ranging, on average, from five to ten years. We do not have any intangible assets with indefinite useful lives.
We review our intangible assets subject to amortization to determine if any adverse conditions exist or a change in circumstances has occurred that would indicate impairment or a change in the remaining useful life. If the carrying value of an asset exceeds its undiscounted cash flows, we will write down the carrying value of the intangible asset to its fair value in the period identified. In assessing fair value, we must make assumptions regarding estimated future cash flows and discount rates. If these estimates or related assumptions change in the future, we may be required to record impairment charges. If the estimate of an intangible asset’s remaining useful life is changed, we will amortize the remaining carrying value of the intangible asset prospectively over the revised remaining useful life.
Accounting for Income Taxes — We estimate our income taxes based on the various jurisdictions where we conduct business and we use estimates in determining our provision for income taxes. We estimate separately our deferred tax assets, related valuation allowances, current tax liabilities and deferred tax liabilities. The Ukrainian currencycalculation of our tax liabilities involves dealing with uncertainties in the application of complex tax rules and the potential for future adjustment of our uncertain tax positions by the U.S. Internal Revenue Service or other taxing jurisdictions.
The provision for income taxes includes federal, state, local and foreign taxes. Deferred tax assets and liabilities are recognized for the estimated future tax consequences of temporary differences between the consolidated financial statement carrying amounts and their respective tax bases. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the year in which the temporary differences are expected to be reversed. Changes to enacted tax rates would result in either increases or decreases in the provision for income taxes in the period of changes. We evaluate the realizability of deferred tax assets and recognize a valuation allowance when it is more likely than not that all or a portion of deferred tax assets will not be realized.
The realization of deferred tax assets is primarily dependent on future earnings. Any reduction in estimated forecasted results may require that we record valuation allowances against deferred tax assets. Once a valuation allowance has been weakenedestablished, it will be maintained until there is sufficient positive evidence to conclude that it is more likely than not that the deferred tax assets will be realized. A pattern of sustained profitability will generally be considered as sufficient positive evidence to reverse a valuation allowance. If the allowance is reversed in a future period, the income tax provision will be correspondingly reduced. Accordingly, the increase and decrease of valuation allowances could have a significant negative or positive impact on future earnings.
Stock-Based Compensation — Equity-based compensation cost relating to the issuance of share-based awards to employees is based on the fair value of the award at the date of grant, which is expensed over the requisite service period, net of estimated forfeitures. Equity-based awards that do not require future service are expensed immediately. If factors change and we employ different assumptions, stock-based compensation expense may differ significantly from what we have recorded in the past.

Significant judgment is required in determining the adjustment to stock-based compensation expense for estimated forfeitures. Stock-based compensation expense in a period could be impacted, favorably or unfavorably, by differences between forfeiture estimates and actual forfeitures. If there are any modifications or cancellations of the underlying unvested securities, we may be required to accelerate, increase or cancel any remaining unvested stock-based compensation expense.
Equity-based awards that do not meet the criteria for equity classification are recorded as liabilities and adjusted to fair value based on the closing price of our stock at the end of each reporting period. Future stock-based compensation expense related to our liability-classified awards may increase or decrease as a result of changes in the market price for our stock, adding to the volatility in our operating results. As of December 31, 2016, 4.1% of outstanding equity awards were classified as liabilities on our consolidated balance sheets.
Recent Accounting Pronouncements
From time to time, new accounting pronouncements are issued by the Financial Accounting Standards Board (“FASB”) or other standards-setting bodies that we adopt according to the various timetables the FASB specifies. Unless otherwise discussed below, we believe the impact of recently issued standards will not have a material impact on our consolidated financial position, results of operations and cash flows upon adoption.
Stock-Based Compensation — In March 2016, the FASB issued accounting guidance to simplify several aspects of the accounting for share-based payments. We will adopt the various amendments of the new accounting guidance in the consolidated financial statements for the quarterly period ending March 31, 2017 with an effective date of January 1, 2017. We believe the new standard will cause volatility in our effective tax rates and diluted earnings per share due to the tax effects related to share-based payments being recorded to the income statement (rather than equity). The volatility in future periods will depend on our stock price at the awards’ vesting dates, geographical mix and tax rates in applicable jurisdictions, as well as the number of awards that vest in each period. While we are continuing to assess the impact of the new standard, we currently expect to recognize approximately $0.01 and $0.05 benefit to the diluted EPS for the first quarter and fiscal year 2017, respectively; and approximately a 1.2% and 1.7% benefit to the effective tax rate for the same periods. However, the benefit realized from the adoption of this accounting standard could vary significantly given the inherent uncertainty in predicting future share-based transactions.
Revenue Recognition — In May 2014, the FASB issued new revenue recognition guidance to provide a single, comprehensive revenue recognition model for all contracts with customers. Under the new guidance, an entity will recognize revenue to depict the transfer of promised goods or services to customers at an amount that the entity expects to be entitled to in exchange for those goods or services. A five-step model has been introduced for an entity to apply when recognizing revenue. The new guidance also includes enhanced disclosure requirements, and is effective January 1, 2018, with early adoption permitted for January 1, 2017. Entities have the option to apply the new guidance under a retrospective approach to each prior reporting period presented, or a modified retrospective approach with the cumulative effect of initially applying the new guidance recognized at the date of initial application within the consolidated statement of changes in stockholders’ equity. We plan to adopt the new guidance effective January 1, 2018 and have not yet determined which transition method we will apply.
We have performed a review of the requirements of the new revenue standard and are monitoring the activity of the FASB and the negative outlooktransition resource group as it relates to specific interpretive guidance. We are currently reviewing customer contracts and are in the Ukrainian economy continues.process of applying the five-step model of the new standard to each contract category we have identified and will compare the results to our current accounting practices, as well as assessing the enhanced disclosure requirements of the new guidance. The new standard could change the amount and timing of revenue and costs recognized under certain arrangement types and could increase the administrative burden on our operations to properly account for customer contracts and provide the more expansive required disclosures. We are also assessing pricing provisions contained in certain of our customer contracts. These provisions represent variable consideration or may provide the customer with a material right, potentially resulting in a different allocation of the transaction price than under the current guidance. Due to the complexity of certain of our contracts, the actual revenue recognition treatment required under the new standard for these arrangements may be dependent on contract-specific terms and vary in some instances. We have not seen a significant impact fromyet determined what effect the inflation in Ukraine. Additionally, we do notnew guidance will have clients located in Ukraine.
Inflation in Russia increased late in 2014 dueon our consolidated financial statements and/or related disclosures and expect to weakeningfurther our assessment of the Russian rublefinancial impact of the new guidance on our consolidated financial statements during fiscal 2017.
Leases — Effective January 1, 2019, we will be required to adopt the new guidance of Accounting Standards Codification (“ASC”) Topic 842, Leases, which will supersede ASC Topic 840, Leases. The new guidance requires lessees to recognize assets and decreasing oil prices. During 2015, inflation in Russia remained steadyliabilities for all leases with some decline observed in recentlease terms of more than 12 months. Our operations in Russia have not been affected directly by local inflation; however, we have noted some decline in demand for our services by our clients in Russia.
Belarus has been experiencing hyperinflation over the last several years. The measures currently used by the Belarusian government to control this recent inflation include monetary policy and pricing instruments, including increasing interest rates and the use of anti-monopoly laws to prevent the increase in pricing of goods, as well as privatization and using foreign borrowings to replenish the budget and stabilize the local currency. Inflation, government actions to combat inflation and public speculation about possible additional actions have also contributed to economic uncertainty in Belarus. Belarus may experience high levels of inflation in the future. We have not seen a significantyet completed the assessment of the impact fromof the inflationnew guidance on our consolidated financial statements or determined which transition method we will apply.

Measurement of Credit Losses on Financial Instruments — Effective January 1, 2020, we will be required to adopt the amended guidance on measurement of credit losses on financial instruments (with early adoption permitted effective January 1, 2019.) The amendments in Belarus asthis update change how companies measure and recognize credit impairment for many financial assets. The new expected credit loss model will require companies to immediately recognize an estimate of credit losses expected to occur over the remaining life of the financial assets (including trade receivables) that are in the scope of the update. We have not yet completed the assessment of the impact of the new guidance on our largest expense there, wages, is denominated in U.S. dollars in order to provide stability in our business and for our employees. Additionally,consolidated financial statements or concluded on when we do not have significant clients located in Belarus and forwill adopt the year ended December 31, 2015, we had approximately $1.5, or 0.2%, of our revenues denominated in Belarusian rubles. The functional currency for financial reporting purposes in Belarus is US dollars.standard.
Other locations where we have clients or perform services are not experiencing significant inflation and our business is not materially impacted by inflation in those locations.
Periods of higher inflation may slow economic growth in those countries. Inflation also is likely to increase some of our costs and expenses, which we may not be able to pass on to our clients and, as a result, may reduce our profitability. Inflationary pressures could also affect our ability to access financial markets and lead to counter-inflationary measures that may harm our financial condition, results of operations or adversely affect the market price of our securities.

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Results of Operations
The following table sets forth a summary of our consolidated results of operations for the periods indicated. This information should be read together with our consolidated financial statements and related notes included elsewhere in this annual report. The operating results in any period are not necessarily indicative of the results that may be expected for any future period.
Year Ended December 31,Year Ended December 31,
2015 2014 20132016 2015 2014
(in thousands, except percentages)(in thousands, except percentages and per share data)
Revenues$914,128
 100.0 % $730,027
 100.0 % $555,117
 100.0 %$1,160,132
 100.0 % $914,128
 100.0 % $730,027
 100.0 %
Operating expenses:         
           
  
Cost of revenues (exclusive of depreciation and amortization)(1)
566,913
 62.0
 456,530
 62.5
 347,650
 62.6
737,186
 63.6
 566,913
 62.0
 456,530
 62.5
Selling, general and administrative expenses(2)
222,759
 24.4
 163,666
 22.4
 116,497
 21.0
264,658
 22.8
 222,759
 24.4
 163,666
 22.4
Depreciation and amortization expense17,395
 1.9
 17,483
 2.4
 15,120
 2.7
23,387
 2.0
 17,395
 1.9
 17,483
 2.4
Goodwill impairment loss
 
 2,241
 0.3
 
 

 
 
 
 2,241
 0.3
Other operating expenses, net1,094
 0.1
 3,924
 0.6
 (643) (0.1)1,205
 0.1
 1,094
 0.1
 3,924
 0.6
Income from operations105,967
 11.6
 86,183
 11.8
 76,493
 13.8
133,696
 11.5
 105,967
 11.6
 86,183
 11.8
Interest and other income, net4,731
 0.5
 4,769
 0.7
 3,077
 0.5
4,848
 0.4
 4,731
 0.5
 4,769
 0.7
Change in fair value of contingent consideration
 
 (1,924) (0.3) 
 

 
 
 
 (1,924) (0.3)
Foreign exchange loss(4,628) (0.5) (2,075) (0.3) (2,800) (0.5)(12,078) (1.0) (4,628) (0.5) (2,075) (0.3)
Income before provision for income taxes106,070
 11.6
 86,953
 11.9
 76,770
 13.8
126,466
 10.9
 106,070
 11.6
 86,953
 11.9
Provision for income taxes21,614
 2.4
 17,312
 2.4
 14,776
 2.6
27,200
 2.3
 21,614
 2.4
 17,312
 2.4
Net income$84,456
 9.2 % $69,641
 9.5 % $61,994
 11.2 %$99,266
 8.6 % $84,456
 9.2 % $69,641
 9.5 %
           
Effective tax rate21.5%   20.4%   19.9%  
Diluted earnings per share$1.87
   $1.62
   $1.40
  
  

(1)Included $16,619, $13,695 $8,648 and $4,823$8,648 of stock-based compensation expense for the years ended December 31, 2016, 2015 2014 and 2013,2014, respectively;
(2)Included $32,625, $32,138 $15,972 and $8,327$15,972 of stock-based compensation expense for the years ended December 31, 2016, 2015 2014 and 2013,2014, respectively.
Revenues
Our revenues are derived primarily from providing software development services to our clients. We discuss below the breakdown of our revenue by service offering, vertical, client location, contract type and client concentration. Revenues include revenue from services as well as reimbursable expenses and other revenues, which primarily consist of travel and entertainment costs that are chargeable to clients.
Revenues by Service Offering
Software development includes software product development, custom application development servicesDuring the year ended December 31, 2016, our revenues were $1.16 billion, growing 26.9% over the corresponding period last year. Total revenues in 2016 and enterprise application platforms services,2015 included $12.5 million and represents our core competency$9.5 million of reimbursable expenses and a substantial majority of our business. The following table sets forthother revenues, by service offering by amount andrespectively, which increased 31.6% in 2016 as compared to 2015, but remained relatively flat as a percentage of our revenues for the periods indicated:
total revenues.
 Year Ended December 31,
 2015 2014 2013
Software development$644,732
 70.6% $504,590
 69.1% $374,426
 67.4%
Application testing services174,259
 19.1
 140,363
 19.2
 109,222
 19.7
Application maintenance and support70,551
 7.7
 58,840
 8.1
 45,971
 8.3
Infrastructure services11,311
 1.2
 14,198
 1.9
 14,433
 2.6
Licensing3,764
 0.4
 3,626
 0.5
 3,439
 0.6
Reimbursable expenses and other revenues9,511
 1.0
 8,410
 1.2
 7,626
 1.4
Revenues$914,128
 100.0% $730,027
 100.0% $555,117
 100.0%

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Revenues by Vertical
We analyze our revenue by separating our clients into five main industry sectors or verticals as detailed in the following table. Also, we serve clients in other industries such as oil and gas, telecommunications, retail, insurance and several others, which are currently reported in aggregate under Emerging Verticals. The following table sets forth revenues by vertical by amount and as a percentage of our revenues for the periods indicated:
 Year Ended December 31,
 2015 2014 2013
Financial Services$248,526
 27.2% $215,425
 29.5% $156,340
 28.2%
Travel and Consumer215,303
 23.6
 157,756
 21.6
 117,248
 21.1
Software & Hi-Tech192,989
 21.1
 157,944
 21.6
 134,970
 24.3
Media & Entertainment120,616
 13.2
 91,726
 12.6
 75,677
 13.6
Life Sciences and Healthcare73,327
 8.0
 42,428
 5.8
 14,079
 2.5
Emerging Verticals53,856
 5.9
 56,338
 7.7
 49,177
 8.9
Reimbursable expenses and other revenues9,511
 1.0
 8,410
 1.2
 7,626
 1.4
Revenues$914,128
 100.0% $730,027
 100.0% $555,117
 100.0%
Revenues by Client Location
Our revenues are sourced from four geographic markets: North America, Europe, CIS and APAC, which we established as a new geographic market in 2014 as a result of an acquisition. We present and discuss our revenues by client location based on the location of the specific client site that we serve, irrespective of the location of the headquarters of the client or the location of the delivery center where the work is performed. Revenue by client location is different from the revenue by reportable segment in our consolidated financial statements included elsewhere in this annual report. Segments are not based on the geographic location of the clients but are rather based on the geography of the management responsible for a particular client regardless of the client’s physical location. The following table sets forth revenues by client location by amount and as a percentage of our revenues for the periods indicated:
 Year Ended December 31,
 2015 2014 2013
North America$485,075
 53.1% $367,498
 50.4% $281,738
 50.8%
Europe352,489
 38.6
 284,853
 39.0
 200,137
 36.1
United Kingdom164,301
 18.0
 141,366
 19.4
 108,892
 19.6
Switzerland111,353
 12.2
 87,111
 11.9
 51,941
 9.4
Other76,835
 8.4
 56,376
 7.7
 39,304
 7.1
CIS43,043
 4.7
 55,807
 7.6
 65,616
 11.7
Russia36,506
 4.0
 48,945
 6.7
 53,328
 9.6
Other6,537
 0.7
 6,862
 0.9
 12,288
 2.1
APAC24,010
 2.6
 13,459
 1.8
 
 
Reimbursable expenses and other revenues9,511
 1.0
 8,410
 1.2
 7,626
 1.4
Revenues$914,128
 100.0% $730,027
 100.0% $555,117
 100.0%
Revenues by Contract Type
Our services are performed under both time-and-material and fixed-price arrangements. Our engagement models depend on the type of services provided to a client, the mix and locations of professionals involved and the business outcomes our clients are looking to achieve. Historically, the vast majority of our revenues have been generated under time-and-material contracts. Under time-and-material contracts, we are compensated for actual time incurred by our IT professionals at negotiated hourly, daily or monthly rates. Fixed-price contracts require us to perform services throughout the contractual period and we are paid in installments on pre-agreed intervals. We expect time-and-material arrangements to continue to comprise the majority of our revenues in the future.

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The following table sets forth revenues by contract type by amount and as a percentage of our revenues for the periods indicated:
 Year Ended December 31,
 2015 2014 2013
Time-and-material$784,153
 85.8% $618,725
 84.7% $456,938
 82.3%
Fixed-price116,700
 12.8
 99,266
 13.6
 87,114
 15.7
Licensing3,764
 0.4
 3,626
 0.5
 3,439
 0.6
Reimbursable expenses and other revenues9,511
 1.0
 8,410
 1.2
 7,626
 1.4
Revenues$914,128
 100.0% $730,027
 100.0% $555,117
 100.0%
Revenues by Client Concentration
We have grown our revenues from our clients by continually expanding the scope and size of our engagements, and we have grown our key client base through internal business development efforts and several strategic acquisitions.
Our focus on delivering quality to our clients is reflected by an average of 95.1% and 84.3% of our revenues in 2015 coming from clients that had used our services for at least one and two years, respectively. In addition, we have significantly grown the size of existing accounts including growth in our top five and top ten clients. The following table sets forth revenues contributed by our top one, top five and top ten clients by amount and as a percentage of our revenues for the periods indicated:
 Year Ended December 31,
 2015 2014 2013
Top client$129,818
 14.2% $97,639
 13.4% $53,136
 9.6%
Top five clients298,063
 32.6
 239,396
 32.8
 169,987
 30.6
Top ten clients400,250
 43.8
 320,126
 43.9
 234,955
 42.3
Operating Expenses
Cost of Revenues (Exclusive of Depreciation and Amortization)
The principal components of our cost of revenues (exclusive of depreciation and amortization) are salaries, employee benefits, stock compensation expense, travel costs and subcontractor fees for IT professionals and subcontractors that are assigned to client projects. Salaries and other compensation expenses of our IT professionals are reported as cost of revenue regardless of whether the employees are actually performing client services during a given period.
We manage the utilization levels of our professionals through hiring and training high-performing IT professionals and efficient staffing of projects. Our staff utilization also depends on the general economy and its effect on our clients and their business decisions regarding the use of our services. Some of our IT professionals are specifically hired and trained to work for specific clients or on specific projects, and some of our offshore development centers are dedicated to specific clients or projects.
Selling, General and Administrative Expenses
Selling, general and administrative expenses represent expenses associated with promoting and selling our services and general administrative functions of our business. These expenses include senior management, administrative personnel and sales and marketing personnel salaries; stock compensation expense, related fringe benefits, commissions and travel costs for those employees; legal and audit expenses, insurance, operating lease expenses, and the cost of advertising and other promotional activities. In addition, we pay a membership fee of 1% of revenues collected in Belarus to the administrative organization of the Belarus Hi-Tech Park.
Our selling, general and administrative expenses have increased primarily as a result of our expanding operations, acquisitions, and the hiring of a number of senior managers to support our growth. We expect our selling, general and administrative expenses to continue to increase in absolute terms as our business expands but will generally remain steady or slightly decrease as a percentage of our revenues.

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Provision for Income Taxes
Determining the consolidated provision for income tax expense, deferred income tax assets and liabilities and related valuation allowance, if any, involves judgment. As a global company, we are required to calculate and provide for income taxes in each of the jurisdictions in which we operate. During 2015, 2014 and 2013, we had $113.8 million, $94.2 million, $69.8 million, respectively, in income before provision for income taxes attributed to our foreign jurisdictions. The statutory tax rate in our foreign jurisdictions is lower than the statutory U.S. tax rate. Additionally, we have secured special tax benefits in Belarus as described below. As a result, our provision for income taxes is low in comparison to income before taxes because of the benefit received from increased income earned in low tax jurisdictions. The foreign tax rate differential represents this significant reduction. Changes in the geographic mix or estimated level of annual pre-tax income can also affect our overall effective income tax rate.
Our provision for income taxes also includes the impact of provisions established for uncertain income tax positions, as well as the related net interest. Tax exposures can involve complex issues and may require an extended period to resolve. Although we believe we have adequately reserved for our uncertain tax positions, we cannot assure you that the final tax outcome of these matters will not be different from our current estimates. We adjust these reserves in light of changing facts and circumstances, such as the closing of a tax audit, statute of limitation lapse or the refinement of an estimate. To the extent that the final tax outcome of these matters differs from the amounts recorded, such differences will impact the provision for income taxes in the period in which such determination is made.
Our subsidiary in Belarus is a member of the Belarus Hi-Tech Park, in which member technology companies are 100% exempt from the current Belarusian income tax rate of 18%. The “On High-Technologies Park” Decree, which created the Belarus Hi-Tech Park, is in effect for a period of 15 years from July 1, 2006.
2015 Compared to 2014
During 2015, our revenues grew 25.2% over 2014, from $730.0 million to a record $914.1 million. The increase was attributable to a combination of factors, including deeper penetration tointo existing customers and attainment of new customers, both organically and through acquisitions. In 2015, revenue from new customers was $45.7 million, primarily resulting from our acquisitions in 2015, and does not include new clients that are affiliates of existing customers whom we consider an expansion of existing business. In addition, total revenues in 2015 and 2014 included $9.5 million and $8.4 million of reimbursable expenses and other revenues, respectively, which increased by 13.1% in 2015 as compared to 2014, but remained relatively flat as a percentage of total revenues.
We discuss below the breakdown of our revenue by client location, service offering, vertical, contract type, and client concentration.
Revenues by Client Location
Our revenues are sourced from four geographic markets: North America, Europe, CIS, and APAC. We present and discuss our revenues by client location based on the location of the specific client site that we serve, irrespective of the location of the headquarters of the client or the location of the delivery center where the work is performed. Revenue by client location is different from the revenue by reportable segment in our consolidated financial statements included elsewhere in this annual report. Segments are not based on the geographic location of the clients, but instead they are based on the location of the management responsible for a particular client.
The following table sets forth revenues by client location by amount and as a percentage of our revenues for the periods indicated:
 Year Ended December 31,
 2016 2015 2014
 (in thousands, except percentages)
North America$664,598
 57.3% $485,075
 53.1% $367,498
 50.4%
Europe412,075
 35.5
 352,489
 38.6
 284,853
 39.0
CIS46,033
 4.0
 43,043
 4.7
 55,807
 7.6
APAC24,905
 2.1
 24,010
 2.6
 13,459
 1.8
Reimbursable expenses and other revenues12,521
 1.1
 9,511
 1.0
 8,410
 1.2
Revenues$1,160,132
 100.0% $914,128
 100.0% $730,027
 100.0%
2016 compared to 2015
During the year ended December 31, 2016, revenues in our largest geography, North America, closed at $664.6 million growing $179.5 million, or 37.0%, from $485.1 million reported for the year ended December 31, 2015. Revenues from this geography accounted for 57.3% of total revenues in fiscal 2016, an increase of 4.2% from 53.1% reported in the corresponding period last year.
Within North America, we experienced strong growth across all verticals despite considerable market, geo-political, and economic uncertainties: each of the two verticals, Media and Entertainment and Life Sciences and Healthcare, grew above 40%; while Emerging Verticals and Financial Services grew 60.0% and 94.1%, respectively. In addition, our traditionally strong Software & Hi-Tech portfolio grew 27.3%, which allowed us to keep this important segment at our strategic target of 20% of consolidated revenues.
We saw continued traction with customers in the pharmaceutical segment of our Life Sciences and Healthcare vertical, and significantly grew our portfolio of customers in Emerging Verticals with over 30% growth in revenues there coming from customers who have been with us less than one year. Combined growth in our Software & Hi-Tech and Media & Entertainment verticals accounted for 48.4% of the overall growth in the North America geography, of which $19.3 million, or 22.3%, was attributable to the expansion of existing relationship with certain long-standing customers within our Media and Entertainment vertical.
Revenues in our Europe geography were $412.1 million, an increase of $59.6 million, or 16.9% over $352.5 million reported last year. Revenues in this geography accounted for 35.5% of consolidated revenues in 2016 as compared to 38.6% last year. The slowdown in revenue growth in 2016 was largely attributable to decelerated growth in revenues from our top customer in this geography, coupled with increased internal and external pressures on customers within our Travel and Consumer vertical, and currency headwinds, primarily due to the depreciation of the British pound relative to the U.S. dollar.

Consistent with results in our North America geography, Europe experienced strong growth in the Media and Entertainment, Life Sciences and Healthcare, and Emerging Verticals, each of which grew over 48% during fiscal 2016. Over 40% of growth in Life Sciences and Healthcare and Emerging Verticals came from customers who have been with us less than one year. Financial Services remained our largest vertical in this geography and accounted for 33.4% of the overall growth in 2016.
Revenues in the CIS geography showed an increase of $3.0 million, or 6.9%, from last year. The increase in CIS revenues came predominantly from customers within the Financial Services and Travel and Consumer verticals. Ongoing economic and geo-political uncertainty in the region, as well as significant volatility of the Russian ruble limit revenue growth in this geography.
2015 compared to 2014
During the year ended December 31, 2015, revenues in our largest geography, North America grewclosed at $485.1 million growing $117.6 million, or 32.0%, as compared with the year ended December 31, 2014. Expressed as a percentage of consolidated revenues, the North America geography accounted for 53.1% in 2015, which represented an increase of 2.7% over 2014. The increase was primarily a result of growth in business from several of our top clients as well as new revenue from the acquisition of NavigationArts.NavigationArts, LLC and Alliance Consulting Global Holdings, Inc.
Revenues from all major verticals in North America grew during the year ended December 31, 2015 as compared with the year ended December 31, 2014. The largest contributor to revenue growth in North America, was its Travel and Consumer vertical, which increased $32.9 million, or 48.6%, as compared with the year ended December 31, 2014. The increase in this vertical was primarily driven by the rapid expansion of our strategic relationship with a large retail chain, a relationship we acquired in 2012.
Our Life Sciences and Healthcare vertical in North America continued its impressive growth since we acquired new clients in the healthcare, insurance and life sciences industries in one of our 2014 acquisitions and created synergies with existing customers in those markets. During the year ended December 31, 2015 combinedCombined revenue growth from customers in this vertical accounted for $29.0 million representing the largest percentage growth of all North America's verticals at 75.9% growth over prior year.
During the year ended December 31, 2015, revenuesRevenues from the Media and Entertainment vertical in North America increased by $25.3 million, or 36.2%, as compared with the year ended December 31, 2014. The growth in this vertical in 2015 was attributable to resumed growth in revenues from certain long-time major customers who had decreased demand for our services in prior years.
North America’s largest vertical, Software and Hi-Tech, experienced growth of $24.5 million or 17.2% during the year ended December 31, 2015 as compared with the year ended December 31, 2014.year.

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During the year ended December 31, 2015, ourThe Financial Services vertical remained our dominant vertical in the European geography. In 2015 revenues from the Financial Services vertical increased by $28.3 million, or 19.0%, respectively, over the corresponding period of 2014. Continued solid performance of the Financial Services vertical was attributable to an increased demand for our services and ongoing relationships with existing top customers located in Europe. We experienced increased business from our top customer located in Switzerland, who was responsible for the majority of the revenue growth in the Financial Services vertical during 2015 as compared with the year ended December 31, 2014. Furthermore, we continue to see growing demand for our services from European-based customers within the Travel and Consumer vertical. During the year ended December 31, 2015 revenues from this vertical increased by $24.0 million as compared with the year ended December 31, 2014 and accounted for 35.5% of total growth in this geography during period indicated. Europe’s Software and Hi-Tech vertical experienced a significant increase of 66.5% in 2015 compared to 2014, in part due to business from a new significant customer in Germany engaged in 2015.
Revenues in the CIS geography showed a decrease of $12.8 million or 22.9% on a year-to-date basesbasis compared to 2014. The decrease in revenues was primarily attributable to a decline in the Financial Services vertical, which iswas significantly impacted by the microeconomic situation in the region. Additionally, significant foreign currency fluctuations in Russia and CIS countries had a material negative impact on the revenues from those locations.


Revenues by Service Offering
Our end-to-end service offerings are grouped into five main categories with software development representing our core competency and a substantial majority of our business. The following table sets forth revenues by service offering by amount and as a percentage of our revenues for the periods indicated:
 Year Ended December 31,
 2016 2015 2014
 (in thousands, except percentages)
Software development$841,916
 72.6% $644,732
 70.6% $504,590
 69.1%
Application testing services223,010
 19.2
 174,259
 19.1
 140,363
 19.2
Application maintenance and support74,475
 6.4
 70,551
 7.7
 58,840
 8.1
Infrastructure services5,069
 0.4
 11,311
 1.2
 14,198
 1.9
Licensing3,141
 0.3
 3,764
 0.4
 3,626
 0.5
Reimbursable expenses and other revenues12,521
 1.1
 9,511
 1.0
 8,410
 1.2
Revenues$1,160,132
 100.0% $914,128
 100.0% $730,027
 100.0%
Revenues by Vertical
We analyze our revenue by separating our clients into five main industry sectors, or verticals, as detailed in the following table. Also, we serve clients in other industries such as oil and gas, telecommunications and several others, which are reported in aggregate under Emerging Verticals.
The following table sets forth revenues by vertical by amount and as a percentage of our revenues for the periods indicated:
 Year Ended December 31,
 2016 2015 2014
 (in thousands, except percentages)
Financial Services$291,845
 25.2% $248,526
 27.2% $215,425
 29.5%
Travel and Consumer259,420
 22.4
 215,303
 23.6
 157,756
 21.6
Software & Hi-Tech237,437
 20.5
 192,989
 21.1
 157,944
 21.6
Media & Entertainment174,017
 15.0
 120,616
 13.2
 91,726
 12.6
Life Sciences and Healthcare105,072
 9.1
 73,327
 8.0
 42,428
 5.8
Emerging Verticals79,820
 6.7
 53,856
 5.9
 56,338
 7.7
Reimbursable expenses and other revenues12,521
 1.1
 9,511
 1.0
 8,410
 1.2
Revenues$1,160,132
 100.0% $914,128
 100.0% $730,027
 100.0%
Revenues by Contract Type
Our services are performed under both time-and-material and fixed-price arrangements. Our engagement models depend on the type of services provided to a client, the mix and locations of professionals involved and the business outcomes our clients are looking to achieve. Historically, the vast majority of our revenues have been generated under time-and-material contracts. Under time-and-material contracts, we are compensated for actual time incurred by our IT professionals at negotiated hourly, daily or monthly rates. Fixed-price contracts require us to perform services throughout the contractual period and we are paid in installments on pre-agreed intervals. We expect time-and-material arrangements to continue to comprise the majority of our revenues in the future.

The following table sets forth revenues by contract type by amount and as a percentage of our revenues for the periods indicated:
 Year Ended December 31,
 2016 2015 2014
 (in thousands, except percentages)
Time-and-material$1,023,781
 88.2% $784,153
 85.8% $618,725
 84.7%
Fixed-price120,689
 10.4
 116,700
 12.8
 99,266
 13.6
Licensing3,141
 0.3
 3,764
 0.4
 3,626
 0.5
Reimbursable expenses and other revenues12,521
 1.1
 9,511
 1.0
 8,410
 1.2
Revenues$1,160,132
 100.0% $914,128
 100.0% $730,027
 100.0%
Revenues by Client Concentration
The following table sets forth revenues contributed by our top one, top five and top ten clients by amount and as a percentage of our revenues for the periods indicated:
 Year Ended December 31,
 2016 2015 2014
 (in thousands, except percentages)
Top client$136,522
 11.8% $129,818
 14.2% $97,639
 13.4%
Top five clients$327,092
 28.2% $298,063
 32.6% $239,396
 32.8%
Top ten clients$442,253
 38.1% $400,250
 43.8% $320,126
 43.9%
During the year ended December 31, 2016, our growth rate outside the top twenty accounts was 44.3%, while the top twenty accounts grew 12.5%. While we seek to grow revenues from our existing clients by continually expanding the scope and size of our engagements, we expect client concentration from our top ten clients to continue to decrease over the long-term.
Our focus on delivering quality to our clients is reflected by an average of 96.2% and 81.9% of our revenues in 2016 coming from clients that had used our services for at least one and two years, respectively. We have long-standing relationship with many of our customers, and revenues derived from these customers may fluctuate as these accounts reach their maturity or upon completion of multi-year projects. While we believe there’s a significant potential for future growth as we expand our capabilities and offerings within specific domains /verticals, we continue to focus on diversification of our client concentration and building up a portfolio of accounts that we believe have significant revenue potential. We anticipate the contribution of these accounts to our total revenues to increase in the mid- to long-term and counterbalance the slowdown in the growth of certain of our largest customers as they reach maturity.
Cost of Revenues (Exclusive of Depreciation and Amortization)
The principal components of our cost of revenues (exclusive of depreciation and amortization) are salaries, employee benefits, stock-based compensation expense, travel costs and subcontractor fees for IT professionals and subcontractors that are assigned to client projects. Salaries and other compensation expenses of our IT professionals are reported as cost of revenue regardless of whether the employees are actually performing client services during a given period.
We manage the utilization levels of our professionals through strategically hiring and training high-performing IT professionals and efficiently staffing projects. Our staff utilization also depends on the general economy and its effect on our clients and their business decisions regarding the use of our services. Some of our IT professionals are specifically hired and trained to work for specific clients or on specific projects, and some of our offshore development centers are dedicated to specific clients or projects.
2016 compared to 2015
During the years ended December 31, 2016, cost of revenues (exclusive of depreciation and amortization) was $737.2 million, representing an increase of 30.0% from $566.9 million reported in the corresponding period last year. The increase was primarily due to an increase in compensation costs as a result of a 34.2% growth in the average number of production headcount for the year.

Expressed as a percentage of revenues, cost of revenues (exclusive of depreciation and amortization) was 63.6% and 62.0% during the years ended December 31, 2016 and 2015, respectively. Of this increase, 1.5% was attributable to a decrease in utilization during the year ended December 31, 2016, as compared to the same period last year. While we will continue to strategically invest in our business to support its long-term growth, we anticipate utilization to reach normalized levels in 2017.
2015 compared to 2014
During the years ended December 31, 2015 and 2014, cost of revenues (exclusive of depreciation and amortization) was $566.9 million and $456.5 million, respectively, representing an increase of 24.2% for the year ended December 31, 2015 over the corresponding period of 2014, mainly due to an increase in headcount of revenue producingrevenue-producing personnel. As a percentage of revenues, cost of revenues (exclusive of depreciation and amortization), decreased 0.5% over the corresponding period of 2014, to 62.0% of consolidated revenues.
The increase in cost of revenues (exclusive of depreciation and amortization) in 2015 was primarily driven by an increase $107.1 million in compensation costs for revenue producingrevenue-producing personnel, including an increase in stock-based compensation expense of $5.0 million. The increases in all of these costs were the result of organic increase in headcount as well as personnel additions from acquisitions.
As a percentage of revenues, cost of revenues (exclusive of depreciation and amortization), decreased 0.5% over the corresponding period of 2014, to 62.0% of consolidated revenues.
Selling, General and Administrative Expenses
Selling, general and administrative expenses represent expenses associated with promoting and selling our services and general administrative functions of our business. These expenses include senior management, administrative personnel and sales and marketing personnel salaries; stock-based compensation expense, related fringe benefits, commissions and travel costs for those employees; legal and audit expenses, insurance, operating lease expenses, and the cost of advertising and other promotional activities. In addition, we pay a membership fee of 1% of revenues in Belarus to the administrative organization of the Belarus Hi-Tech Park.
Over the recent years, our selling, general and administrative expenses have been increasing as a result of our expanding operations, acquisitions, and the hiring of a number of senior managers to support our growth. We expect our selling, general and administrative expenses to continue to increase in absolute terms as our business expands but will generally remain steady or slightly decrease as a percentage of our revenues.
2016 compared to 2015
During the year ended December 31, 2016, selling, general and administrative expenses were $264.7 million, representing an increase of 18.8% as compared to $222.8 million reported in the corresponding period last year. The increase in selling, general and administrative expenses in 2016 was primarily driven by a $14.6 million increase in personnel-related costs, coupled with a $16.5 million increase in general and administrative expenses related to investment in facilities and infrastructure to support the increased headcount, and $4.0 million higher spending related to talent acquisition and development.
Expressed as a percentage of revenue, selling, general and administrative expenses decreased 1.6% to 22.8% for the year ended December 31, 2016. The decrease was primarily attributable to higher revenue growth as compared to the growth in compensation driven by the increased headcount and wage inflation, coupled with relatively limited growth in stock-based compensation.
2015 compared to 2014
We continued to invest in key areas including sales, infrastructure, industry expertise, and other functions supporting global operations and our growth. During the year ended December 31, 2015, selling, general and administrative expenses totaled $222.8 million, representing an increase of 36.1% from $163.7 million during 2014. As a percentage of revenue, selling, general and administrative expenses represent 24.4% of consolidated revenues, an increase of 2.0% over last year. The increase in selling, general and administrative expenses in 2015 was primarily driven by a $48.5 million increase in personnel-related costs, which includes salaries and stock-based compensation expenses. Of these personnel-related costs, stock-based compensation expenses increased $16.2 million during the year ended December 31, 2015. Our selling, general and administrative expenses have increased primarily as a result of our expanding operations, acquisitions, and the hiring of a number of senior managers to support our growth.

In addition, we have issued stock to the sellers and/or personnel in connection with certain of our business acquisitions and have been recognizing stock-based compensation expense in the periods after the closing of these acquisitions as part of the selling, general and administrative expenses. Such stock based compensation expenses related to acquisitions comprised 58.2% of total selling, general and administrative stock-based compensation expense for the year ended December 31, 2015 compared to the same period in 2014.2015.
Depreciation and Amortization Expense
2016 compared to 2015
During the year ended December 31, 2016, depreciation and amortization expense was $23.4 million, representing an increase of $6.0 million from $17.4 million reported in the corresponding period last year. The increase was predominantly driven by depreciation of computer equipment and infrastructure related to increased headcount, and amortization of intangible assets related to the acquisitions of businesses completed in 2015. Expressed as a percentage of revenues, depreciation and amortization expense was 2.0%, a slight increase from 1.9% reported in the same period last year.
Depreciation and amortization expense includes amortization of acquired intangible assets, all of which have finite useful lives.
2015 compared to 2014
Depreciation and amortization expense was $17.4 million in 2015, representing a decrease of $0.1 million overfrom 2014. Expressed as a percentage of revenues, depreciation and amortization expense totaled 1.9% and decreased 0.5% compared with 2014. Expense
Depreciation and amortization expense includes amortization of acquired intangible assets, all of which have finite useful lives.
Other Operating Expenses, Net
There were no material changes in other operating expenses, net during the year ended December 31, 2016 as compared to the corresponding period last year.
During the year ended December 31, 2015, other operating expenses decreased $2.8 million sincefrom 2014 to $1.1 million.

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Table of Contents

Interest and Other Income, Net
NetInterest and other income, net is comprised of interest earned on cash accounts in Belarus and, to a lesser extent, interest expense related to our revolving credit facility, interest earned on employee housing loans, and other income.
There were no material changes in interest and other income, net in 2016 as compared to 2015.
Interest and other income, net was $4.7 million in 2015, representing a slight decrease of 0.8% from $4.8 million receivedrecognized in 2014. The income consists primarily of interest received on cash accounts in Belarus and, to a lesser extent, interest earned on employee housing loans.
Provision for Income Taxes
Determining the consolidated provision for income tax expense, deferred income tax assets and liabilities and related valuation allowance, if any, involves judgment. As a global company, we are required to calculate and provide for income taxes in each of the jurisdictions in which we operate. During 2016, 2015 and 2014, we had $135.8 million, $113.8 million and $94.2 million, respectively, in income before provision for income taxes attributed to our foreign jurisdictions. The Company’sstatutory tax rate in the majority of our foreign jurisdictions is lower than the statutory U.S. tax rate. Additionally, we have secured special tax benefits in Belarus as described below. As a result, our provision for income taxes is relatively low as a percentage of income before taxes because of the benefit received from income earned in low tax jurisdictions. Changes in the geographic mix or level of annual pre-tax income can also affect our overall effective income tax rate.
Our provision for income taxes also includes the impact of provisions established for uncertain income tax positions, as well as the related net interest. Tax exposures can involve complex issues and may require an extended period to resolve. Although we believe we have adequately reserved for our uncertain tax positions, we cannot provide assurance that the final tax outcome of these matters will not be different from our current estimates. We adjust these reserves in light of changing facts and circumstances, such as the closing of a tax audit, statute of limitation lapse or the refinement of an estimate. To the extent that the final tax outcome of these matters differs from the amounts recorded, such differences will impact the provision for income taxes in the period in which such determination is made.

Our subsidiary in Belarus is a member of the Belarus Hi-Tech Park, in which member technology companies are 100% exempt from the current Belarusian income tax rate of 18%. The “On High-Technologies Park” Decree, which created the Belarus Hi-Tech Park, is in effect for a period of 15 years from July 1, 2006. The aggregate dollar benefits derived from this tax holiday approximated $13.6 million, $20.8 million and $16.8 million for the years ended December 31, 2016, 2015 and 2014, respectively. The benefit the tax holiday had on diluted net income per share approximated $0.26, $0.40 and $0.34 for the years ended December 31, 2016, 2015 and 2014, respectively.
2016 compared to 2015
Provision for income taxes was $27.2 million in 2016 and $21.6 million in 2015. The increase in the effective tax rate from 20.4% in 2015 to 21.5% in 2016 was predominantly caused by the changes in the geographic mix of our earnings, including:
higher earnings attributable to our U.S. operations in 2016 driven by the growth in onsite presence in the U.S. and lower earnings attributable to foreign jurisdictions due to currency headwinds, among other factors;
changes in the geographic mix of our earnings attributable to foreign operations toward jurisdictions with higher statutory income tax rates;
full-year impact of inclusion of operating results of AGS, a 2015 acquisition with its primary delivery centers in India, which has a significantly higher tax rate.
As we continue to grow our onsite presence and expand the geographic footprint of our delivery centers, we expect this may result in an increase to our effective tax rate in the near and medium term; but other factors that may contribute, favorably or unfavorably, to the overall effective tax rate in 2017 and beyond must be considered as well.
2015 compared to 2014
Provision for income taxes was $21.6 million in 2015 and $17.3 million in 2014. The effective tax rate increased to 20.4% in 2015 from 19.9% in 2014 primarily due to changes in the geographic mix of our current year earnings and discrete tax benefits recorded in 2014 that didn’t recur in 2015, as well as due to elimination of certain income tax holiday benefits in Hungary in 2015.
2014 Compared to 2013
During 2014, our revenues grew in excess of 30.0% over 2013, from $555.1 million to a record $730.0 million. The increase was attributable to a combination of factors, including deeper penetration to existing customers and attainment of new customers, both organically and through acquisitions. In 2014, revenue from new customers was $49.7 million, primarily resulting from our 2014 acquisitions, and does not include new clients that are affiliates of existing customers. Our 2014 acquisitions increased our total revenues by $39.8 million, however, someForeign Exchange Gain / Loss
For discussion of the acquired clients are affiliated with our existing clientsimpact of foreign exchange fluctuations see “Item 7A. Quantitative and therefore, we consider them an expansionQualitative Disclosures About Market Risk - Foreign Exchange Risk.”
Effects of existing business. In addition, total revenuesInflation
Economies in 2014CIS countries, particularly Belarus, Russia, Kazakhstan and 2013 included $8.4 millionUkraine, have periodically experienced high rates of inflation. Periods of higher inflation may slow economic growth in those countries and $7.6 million of reimbursable expenses and other revenues, respectively, which increased by 10.3% in 2014 as compared to 2013, but remained relatively flat as a percentage of revenues.
During the year ended December 31, 2014, revenues in our largest geography, North America, grew $85.8 million, or 30.4%, as compared with the year ended December 31, 2013. Expressed as a percentage of consolidated revenues, the North America geography accounted for 50.4% in 2014, which represented aresult decrease of 0.4% over 2013. The slight decrease was primarily a result of accelerated growth in the European geography.
Revenues from all verticals in North America grew during the year ended December 31, 2014 as compared with the year ended December 31, 2013. The largest growth was in North America’s Other vertical due to acquiring new clients in the healthcare, insurance and life sciences industries through a 2014 acquisition as well as creating synergies with existing customers in those markets. During the year ended December 31, 2014 combined revenue growth from customers in the Other vertical accounted for $33.8 million, representing a 94.3%, growth over prior year.
Our Travel and Consumer vertical in North America geography increased by $15.0 million, or 28.4%, as compared with the year ended December 31, 2013. The increase in this vertical was primarily driven by the rapid expansion of our strategic relationship with a large retail chain, a relationship we acquired in 2012. During the year ended December 31, 2014, revenues from the Business Information and Media vertical in North America increased by $12.5 million, or 21.8%, as compared with the year ended December 31, 2013. The growth in this vertical in 2014 was attributable to resumed growth in revenues from certain long-time major customers who had decreased demand for our services in 2013. North America’s largest vertical, ISVs and Technology, experienced growth of $19.8 million or 16.2% during the year ended December 31, 2014 as compared with the year ended December 31, 2013.
During the year ended December 31, 2014, our Banking and Financial Services vertical remained our dominant vertical in Europe geography. In 2014 revenues from the Banking and Financial Services vertical increased by $42.5 million, or 39.9%, respectively, over the corresponding periods of 2013. Continued solid performance of the Banking and Financial Services vertical was attributable to an increased demand for our services and ongoing relationships withnegatively impact the business of our existing top customersclients. Inflation is likely to increase some of our expenses, which may reduce our profitability, as we may not be able to pass these increases on to our clients. Generally, our largest expense that could be impacted by inflation is wages. We do not rely on borrowed funds for operations in those locations; therefore, increases in interest rates typical for inflationary environments do not currently pose a risk to our business.
Ukraine has been experiencing political and economic turmoil severely impacting the Ukrainian economy. The Ukrainian currency has been weakened and the negative outlook in the Ukrainian economy continues. We have not experienced a significant impact from the inflation in Ukraine and do not have significant clients located in Europe.Ukraine.
Inflation in Russia increased in late 2014 due to weakening of the Russian ruble and decreasing oil prices. Inflation in Russia remained steady during 2015 with some decline observed during 2016. Our operations in Russia have not been significantly affected by local inflation; however, we have noted some impact from inflation on our clients in Russia.
Belarus experienced hyperinflation in the past and may experience high levels of inflation in the future. We experienced increasedhave not seen a significant impact from the inflation in Belarus as our largest expense there, wages, is denominated in U.S. dollars in order to provide stability in our business fromand for our top customeremployees. We do not have significant clients located in Switzerland, nearly doubling the revenue during 2014 as compared with the year ended December 31, 2013. Furthermore, we continue to see growing demand for our services from European-based customers within the TravelBelarus and Consumer and Business Information and Media verticals. During the year ended December 31, 2014 combined revenues from these verticals increased by $30.9 million, respectively, year ended December 31, 2014 and accounted for 36.4% of total growth in this geography during periods indicated. Europe’s Other vertical grew 65.0% or $8.0 million in 2014, mainly due to addition of new clients through our 2014 acquisitions.

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Revenues in the CIS geography showed a decrease of $9.8 million or 14.9% on a year-to-date bases compared to 2013. The decrease in revenues was primarily attributable to budgetary delays with certain customers located in Russia, as well as a decline in business from one of our largest customers in Kazakhstan. Additionally, significant foreign currency fluctuations in Russia and CIS countries had a material negative impact on the revenues from those locations.
Cost of Revenues (Exclusive of Depreciation and Amortization)
During the years ended December 31, 2014 and 2013, cost of revenues (exclusive of depreciation and amortization) was $456.5 million and $347.7 million, respectively, representing an increase of 31.3% for the year ended December 31, 2014 over the corresponding period2016, we had approximately $1,743 or 0.2% of 2013, mainly due to increaseour revenues denominated in hiring of revenue generating professionals. As a percentage of revenues, cost of revenues (exclusive of depreciation and amortization), decreased 0.1% over the corresponding period of 2013, to 62.5% of consolidated revenues.
Belarusian rubles. The increasefunctional currency for financial reporting purposes in cost of revenues (exclusive of depreciation and amortization) in 2014 was primarily driven by a $107.9 million increase in personnel-related costs, the main component of cost of revenue, as well as an increase in stock-based compensation expense for our revenue generating IT professionals of $3.8 million. The increases in all of these costs were the result of organic increase in headcount as well as personnel additions from acquisitions.
Selling, General and Administrative Expenses
We continued to invest in key areas, including sales, infrastructure, industry expertise, and other functions supporting global operations.
During the year ended December 31, 2014, selling, general and administrative expenses totaled $163.7 million, representing an increase of 40.5% from $116.5 million during 2013. As a percentage of revenue, selling, general and administrative expenses represent 22.4% of consolidated revenues, an increase of 1.4% over last year. The increase in selling, general and administrative expenses in 2014 was primarily driven by a $30.2 million increase in total personnel-related costs, which include stock based compensation relating to the non-production personnel impact of the four 2014 acquisitions. During the year ended December 31, 2014, we incurred $13.4 million of selling, general and administrative costs related to our 2014 acquisitions, including $4.1 million of stock-based compensation expense, which resulted in a 1.8% increase in selling, general and administrative expenses expressed as a percentage of revenues.
Depreciation and Amortization Expense
Depreciation and amortization expense was $17.5 million in 2014, representing an increase of $2.4 million over 2013. Expressed as a percentage of revenues, depreciation and amortization expense totaled 2.4% and remained at the same level compared with 2013.
Goodwill Impairment Loss
We performed an annual goodwill impairment test as of October 31, 2014 in accordance with prescribed guidance. In assessing impairment both qualitatively and quantitatively based on the total of the expected future discounted cash flows directly related to the reporting unit, the Company determined that the fair value of the Russia reporting unit was below the carrying value of the reporting unit. The Company completed the second step of the goodwill impairment test, resulting in an impairment charge of $2.2 million as of December 31, 2014. All assets that related to the Russia segment, excluding goodwill and including any unrecognized intangible assets, were assessed by management and deemed to not be impaired.Belarus is US dollars.
Other Operating Expenses, Netlocations where we have clients or perform services are not experiencing significant inflation and our business is not materially impacted by inflation in those locations.
During the year ended December 31, 2014, we recorded a $2.6 million write-down in prepaid assets and a $1.1 million write-down of capitalized costs related to the construction of our corporate facilities in Belarus. Please see Note 16 in the notes to our consolidated financial statements in the 2014 Annual Report on Form 10-K for further information.
Interest and Other Income, Net
Net interest and other income was $4.8 million in 2014, representing an increase of 55.0% from $3.1 million received in 2013. The increase was primarily driven by interest received on cash accounts in Belarus and, to a lesser extent, interest earned on employee housing loans.

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Provision for Income Taxes
The Company’s effective tax rate was 19.9% and 19.2% in 2014 and 2013, respectively. The primary factors that caused this increase in the rate for the above-mentioned periods are: (a) the four acquisitions completed during 2014, which added other tax jurisdictions into the Company’s worldwide effective tax rate analysis; (b) a larger portion of the Company’s pre-tax profits attributable to tax jurisdictions with relatively higher effective tax rates (as compared to effective tax rates within the CIS region) were seen in 2014 and (c) a relative shift in offshore services that were performed in Belarus to other countries in the CIS region (specifically Ukraine and, to a lesser extent, Russia). Both of those locations have higher income tax rates than Belarus, where the Company is currently entitled to a 100% exemption from Belarusian income tax.
Results by Business Segment
Our operations consist of four reportable segments: North America, Europe, Russia and Other. The segments represent components of EPAM for which separate financial information is available that is used on a regular basis by our chief executive officer, who is also our chief operating decision maker (“CODM”), in determining how to allocate resources and evaluate performance. This determination is based on the unique business practices and market specifics of each region and that each region engages in business activities from which it earns revenues and incurs expenses. Our reportable segments are based on managerial responsibility for a particular client. Because managerial responsibility for a particular client relationship generally correlates with the client’s geographic location, there is a high degree of similarity between client locations and the geographic boundaries of our reportable segments. In some specific cases, however, managerial responsibility for a particular client is assigned to a management team in another region, usually based on the strength of the relationship between client executives and particular members of our senior management team. In a case like this, the client’s activity would be reported through the management team’s reportable segment. Our CODM evaluates the Company’s performance and allocates resources based on segment revenues and operating profit.
Segment operating profit is defined as income from operations before unallocated costs. Generally, operating expenses for each operatingreportable segment have similar characteristics and are subject to similar factors, pressures and challenges. Expenses included in segment operating profit consist principally of direct selling and delivery costs as well as an allocation of certain shared services expenses. We use globally integrated support organizations to realize economies of scale and efficient use of resources. As a result, a majority of our expenses is shared by all segments. These shared expenses include Delivery, Recruitment and Development, Sales and Marketing, and support functions such as IT, Finance, Legal, and Human Resources. Generally, shared expenses are allocated based on measurable drivers of expense, e.g., recorded hours or headcount. However, certain expenses are not specifically allocated to specific segments, as management does not believe it is practical to allocate such costs to individual segments because they are not directly attributable to any specific segment. Further, stock based compensation expense is not allocated to individual segments in internal management reports used by the chief operating decision maker.CODM. Accordingly, these expenses are separately disclosed as “unallocated” and adjusted only against our total income from operations.
Revenues from external clients and segment operating profit, before unallocated expenses, for the North America, Europe, Russia and Other reportable segments for the fiscal years ended December 31, 2016, 2015 2014 and 20132014 were as follows:
Year Ended December 31,Year Ended December 31,
2015 2014 20132016 2015 2014
(in thousands) (in thousands) 
Total segment revenues:          
North America$471,603
 $374,509
 $284,636
$642,216
 $471,603
 $374,509
Europe400,460
 299,279
 204,150
474,988
 400,460
 299,279
Russia37,992
 50,663
 55,764
43,611
 37,992
 50,663
Other4,911
 5,552
 10,493

 4,911
 5,552
Total segment revenues$914,966
 $730,003
 $555,043
$1,160,815
 $914,966
 $730,003
Segment operating profit: 
  
   
  
  
North America$112,312
 $90,616
 $66,814
$143,021
 $112,312
 $90,616
Europe68,717
 50,189
 34,573
67,545
 68,717
 50,189
Russia5,198
 7,034
 7,077
7,555
 5,198
 7,034
Other(94) (3,220) 844

 (94) (3,220)
Total segment operating profit$186,133
 $144,619
 $109,308
$218,121
 $186,133
 $144,619

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2015 Compared to 2014
North America Segment
2016 compared to 2015
North America segment revenues were 55.3% and 51.5% of total revenues representing an increase of $170.6 million, or 36.2%, over the corresponding period last year. The North America segment’s operating profits increased $30.7 million, or 27.3%, as compared to the same period of 2015, to $143.0 million net operating profit. North America remains our most profitable segment with operating profit composing 22.3% of North America segment’s revenues.
Strong performance of our North America segment was predominantly driven by continued expansion of existing top customer relationships across all our key verticals, as well as strong performance of the U.S. dollar against foreign currencies.

2015 compared to 2014
During the years ended December 31, 2015 and 2014 revenues from our North America segment were 51.5% and 51.3% of total revenues representing an increase of $97.1 million, or 25.9%, over the corresponding period in 2014. The North America segment’s operating profits increased by $21.7 million, or 23.9%, as compared to the same period of 2014, to $112.3 million net operating profit. North America remains our most profitable segment with operating profit composing 23.8% of revenues.
The increase in revenues during the year ended December 31, 2015, was primarily driven by continued expansion of existing top customer relationships, as well as our recent acquisitions. Operating results of the North America operatingreportable segment benefited from our 2014 acquisitions in the Life Sciences and Healthcare industry as well as acquisitions of NavigationArts and AGS during 2015.
Europe Segment
Our Europe segment includes the business in the APAC region, which is managed by the same management team.
2016 compared to 2015
Europe segment’s revenues were $475.0 million, representing an increase of $74.5 million, or 18.6%, from last year. During the years ended December 31, 2016 and 2015, revenues from our Europe segment were 40.9% and 43.8% of total segment revenues, respectively. During 2016, this segment’s operating profits decreased $1.2 million, or 1.7%, as compared to the corresponding period last year, to $67.5 million net operating profit.
During 2016, the segment’s operating results were adversely affected by a slowdown in growth of our top customer, significantly increasing pressures on operating margins and overall profitability of the segment. In January 2017, we announced a multi-year arrangement with this customer, which extended our nine-year relationship and established a minimum revenue commitment of at least $300 million over the next three years.
The segment’s operating results were adversely affected by exchange rate fluctuations, and particularly, the depreciation of the British pound relative to the U.S. dollar, which is the primary currency for the majority of the delivery centers that service our U.K. accounts. The Financial Services vertical remained our largest vertical in this segment and accounted for 30.8% of the overall growth of this segment in 2016.
2015 compared to 2014
During the years ended December 31, 2015 and 2014, revenues from our Europe segment were 43.8% and 41.0% of total segment revenues, respectively, representing an increase of $101.2 million, or 33.8%, in 2015 over the 2014 results. During 2015, the Europe segment’s operating profits increased by $18.5 million, or 36.9%, as compared to the corresponding period of 2014, to $68.7 million net profit from the segment’s operations.
Europe continues to be a growing segment in our portfolio as our business model continues to gain considerable traction with European-based clients primarily in the Financial Services and Travel and Consumer verticals. Furthermore, our Europe segment benefited from the continued growth of Jointech, a company we acquired in 2014, with locations in South-East Asia. This extended reach into a new geography created additional options for our existing customers within the Financial Services vertical, particularly in the areas of investment banking and wealth and asset management. We continue to expect that our new and existing customers will use our services in that fast-growing region resulting in possible revenue and operating profit increases to the Europe segment.
Russia and Other Segments
2016 compared to 2015
During fiscal 2016, we completed multi-year engagements with certain customers, which significantly decreased the portfolio of accounts in our Other reportable segment. As a result, managerial responsibility for the remaining accounts in the Other reportable segment was transferred to our Russia segment. This change does not represent a change in our reportable segments, but is rather a movement in responsibility for a number of customers, accounting for less than 1% of total segment revenue.

Revenues from our Russia reportable segment increased $0.7 million relative to the revenues of our Russia and Other segments in the corresponding period of 2015. Operating profits of our Russia segment increased $2.5 million when compared to the operating profits of our Russia and Other segments in the corresponding period of 2015. Expressed as a percentage of the Russia and Other segments' revenues, operating profits were 17.3% and 11.9% in 2016 and 2015, respectively. Ongoing economic and geo-political uncertainty in the region, as well as significant volatility of Russian ruble limit growth of this segment.
2015 compared to 2014
During the years ended December 31, 2015, revenues from the Russia and the Other operatingreportable segments decreased by $12.7 million and $0.6 million, respectively, over the corresponding period of 2014. Operating profits of the Russia segment decreased $1.8 million and the operating losses of the Other segment decreased $3.1 million when compared with the operating profits/(losses) of these segments in the corresponding period of 2014.
Revenues and operating profits in the Russia and Other segments are subject to volatility resulting from revenue recognition delays related to finalizing budgets for certain arrangements with major customers in those segments causing instability betweenof revenues and associated profits. Additionally, strong foreign currency fluctuations in 2014 further destabilized the economic situation in the regions that are included in these segments and negatively impacted our business in Russia and CIS countries during 2015. Since 2014, the United States and the European Union have imposed sanctions targeting Russian government and government-controlled interests and certain government officials. While this has not directly impacted our business in Russia, the sanctions aggravated the overall Russian economy and negatively influenced the business of our major clients in the region, decreasing demand for our services.
2014 Compared to 2013
North America Segment
During the years ended December 31, 2014 and 2013, revenues from our North America segment were 51.3% and 51.3% of total revenues representing an increase of $89.9 million, or 31.6%, over the corresponding period in 2013. The North America segment’s operating profits increased by $23.8 million, or 35.6%, as compared to the same period of 2013, to $90.6 million net operating profit.
The increase in revenues during the year ended December 31, 2014, was primarily driven by continued expansion of existing customer relationships, as well, as our recent acquisitions. The largest growth was in the Other vertical due to acquiring new clients in the healthcare, insurance and life sciences industries through a 2014 acquisition as well as creating synergies with existing customers in those markets. During the year ended December 31, 2014, combined revenue growth from customers in the Other vertical accounted for $34.8 million, representing a 97.4% growth over prior year.

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All other verticals in the North America segment experienced revenue growth and increases in operating profit in 2014 as compared to 2013, mainly due to increased business from our long-term clients with some contribution from the clients acquired in connection with acquisitions. The largest vertical, the ISVs and Technology, grew revenues by $22.1 million, or 18.6%, in 2014 as compared to the corresponding period of 2013. Revenues from our Travel and Consumer vertical in 2014 increased by $14.6 million, or 26.7%, as compared to the corresponding period in 2013. Banking and Financial Services had an increase in revenue of $5.9 million or 45.4%, and operating profit increased by 104.9% in this vertical in 2014 compared with the year ended December 31, 2013. Business Information and Media grew in revenue $12.5 million or 20% for the year ended December 31, 2014 as compared to the same period in 2013.
Europe Segment
During the years ended December 31, 2014 and 2013, revenues from our Europe segment were 41.0% and 36.8% of total segment revenues, respectively, representing an increase of $95.1 million, or 46.6%, in 2014 over the 2013 results. During 2014, the Europe segment’s operating profits increased by $15.6 million, or 45.2%, as compared to the corresponding period of 2013, to $50.2 million net profit from the segment’s operations.
Europe continues to be a rapidly growing segment in our portfolio, given our nearshore delivery capabilities, and our value proposition in delivering quality software engineering solutions and services. Our business model continues to gain considerable traction with European-based clients primarily in the Banking and Financial Services and Travel and Consumer verticals. Furthermore, our Europe segment benefited from the acquisition of Jointech, a company with locations in South-East Asia, which created a new value proposition for our existing customers within the Banking and Financial Services vertical, particularly in the areas of investment banking, wealth and asset management, and extended our reach into new geography. We expect that many of our new and existing customers in other business verticals will use our services in that fast-growing region resulting in possible revenue and operating profit increases to the Europe segment.
Russia and Other Segments
During the years ended December 31, 2014, revenues from the Russia and Other operating segments decreased by $5.1 million and $4.9 million, respectively, over corresponding period of 2013. Operating profits of the Russia segment showed no changes when compared with the operating profits of this segment in 2013, while profits of Other segments decreased $4.1 million compared to 2013.
Revenues and operating profits in the Russia and Other segments are subject to volatility resulting from revenue recognition delays related to finalizing budgets for certain arrangements with major customers in those segments. As a result, we recorded the cost related to the performance of services in 2014 with no associated revenues recognized in the period that services were rendered. These business arrangements were further exacerbated by strong foreign currency fluctuations in the fourth quarter of 2014, negatively impacting our business in Russia and CIS countries.

41


Liquidity and Capital Resources
Capital Resources
At December 31, 2015,2016, our principal sources of liquidity were cash and cash equivalents totaling $199.4 million, a one-year time deposit maturing in March 2016 in the amount of $30.0$362.0 million and $65.0$74.1 million of available borrowings under our revolving line of credit. As of that date, $181.9credit facility.
At December 31, 2016, $310.2 million of our total cash and cash equivalents was held outside the United States. Of this amount, $79.3$153.6 million was held in U.S. dollar denominated accounts in Belarus, including deposits that accrued interest at an average interest rate of 4.8% during 2015.
In 2014 we repatriated $75.8 million U.S. dollars from Belarus into our Cyprus entity’s bank in the United Kingdom. In March 2015, $30.0 million of this amount has been placed into a one-yearwhich include some interest bearing time deposit within the same bank.deposits. As of December 31, 2015, the remaining unrestricted2016, a balance of $28.7$29.1 million U.S. dollars iswas kept in a savings accountunrestricted accounts in our Cyprus entity’s bank accounts in the United Kingdom.
Our subsidiaries in the CIS orand APAC regions do not maintain significant balances denominated in currencies other than U.S. dollars.
The cash and cash equivalents held at locations outside of the United States are for future operating expenses and we have no intention of repatriating those funds. However, as a result of various factors such as any global or regional instability or changes in tax laws in place for a specific time period, we may later decide to repatriate some or all of our funds to the United States. If we decide to remit funds to the United States in the form of dividends, $212.1$307.3 million would be subject to foreign withholding taxes, of which $184.0$241.7 million would also be subject to U.S. corporate income tax. We believe that our available cash and cash equivalents held in the United States and cash flow to be generated from domestic operations will be adequate to satisfy our domestic liquidity needs in the foreseeable future. Our ability to expand and grow our business in accordance with current plans and to meet our long-term capital requirements will depend on many factors, including the rate, if any, at which our cash flows increase, our continued intent not to repatriate earnings from outside of the U.S. and the availability of public and private debt and equity financing. To the extent we pursue one or more significant strategic acquisitions, we may incur debt or sell additional equity to finance those acquisitions.
On September 12, 2014, we establishedexecuted a revolving credit facility with PNC Bank, National Association; Santander Bank, N.A; and Silicon Valley Bank. This credit facility consists of a $100.0 million revolving line of credit,Bank, with a maturity dateborrowing capacity of $100.0 million. The Revolving Credit Facility will mature and all amounts outstanding thereunder will be due and payable on September 12, 2019. There is potential to increase the credit facility up to $200.0 million if certain conditions are met. Borrowings under the 2014 Credit Facilitycredit facility may be denominated in United States dollars or, up to a maximum of $50.0 million in British pounds sterling, Canadian dollars, euros or Swiss francs (or other currencies as may be approved by the lenders). At December 31, 2015,2016, we had outstanding debt of $35.0$25.0 million and unused letters of credit issued under the Revolving Credit Facility totaling $0.9 million, primarily for securing collateral requirements under certain insurance programs, with the balance of the credit limit of $65.0$74.1 million remaining available for use.borrowing.
We were in compliance with all restrictive covenants and limitations in the Revolving Credit Facility as of December 31, 2016, and anticipate being in compliance with all restrictive covenants for the foreseeable future.

Cash Flows
The following table summarizes our cash flows for the periods indicated:
Year Ended
December 31,
Year Ended
December 31,
2015 2014 20132016 2015 2014
(in thousands)(in thousands)
Consolidated Statements of Cash Flow Data:          
Net cash provided by operating activities$76,393
 $104,874
 $58,225
$164,817
 $76,393
 $104,874
Net cash used in investing activities(125,494) (52,929) (21,820)(9,322) (125,494) (52,929)
Net cash provided by financing activities33,764
 10,347
 15,501
10,467
 33,764
 10,347
Effect of exchange rate changes on cash and cash equivalents(5,748) (10,965) (811)(3,386) (5,748) (10,965)
Net increase/(decrease) in cash and cash equivalents$(21,085) $51,327
 $51,095
$162,576
 $(21,085) $51,327
Cash and cash equivalents, beginning of period220,534
 169,207
 118,112
199,449
 220,534
 169,207
Cash and cash equivalents, end of period$199,449
 $220,534
 $169,207
$362,025
 $199,449
 $220,534

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Operating Activities
2016 Compared to 2015
Net cash provided by operating activities during the year ended December 31, 2016 increased $88.4 million, or 115.7%, to $164.8 million, as compared to the corresponding period in 2015. The increase in operating cash flows was primarily attributable to higher customer collections as we made substantial progress in managing our billed and unbilled trade receivables, and decreased the ratio of billed and unbilled trade receivables to revenues over the course of 2016. For 2017, we anticipate the ratio to remain relatively consistent with the second half of 2016.
2015 Compared to 2014
Net cash provided by operations during the year ended December 31, 2015 decreased $28.5 million to $76.4 million, as compared to $104.9 million net cash provided by operations in 2014. During 2015, operating cash flows were impacted by increases in billed and unbilled accounts receivable and greater accrued expenses, which were mostly impacted by increases in bonus compensation. During 2015, we have recorded morehad higher accounts receivable and unbilled revenue balances as compared to the same period in 2014. The increases in billed and unbilled receivables are consistent with our growth in revenue and the majority of unbilled receivables are current with nearly 60% recorded in December
Investing Activities
2016 Compared to 2015 and over 90% recorded during the fourth quarter of 2015.
Net cash provided by operationsused in investing activities during the year ended December 31, 2014 increased $46.62016 was $9.3 million to $104.9 million, as compared to $58.2$125.5 million netused in the same period in 2015. During fiscal 2016, cash providedspent on capital expenditures increased by operations in 2013. During 2014, operating cash flows benefited, in part, from our strong focus on improving working capital efficiencies during the latter part of 2013, including focus on reducing days outstanding for our billed and unbilled receivables. This emphasis$11.4 million, which was more than offset the higher working capital requirements associatedby a $71.4 million decrease in cash spent on acquisitions of businesses in 2016, coupled with increased revenues, including growtha $59.5 million increase as a result of movements in total compensationrestricted cash and benefits of our IT professionals, overhead expenses, and higher tax payments.time deposits.
Investing Activities2015 Compared to 2014
Net cash used in investing activities during the year ended December 31, 2015 was $125.5 million and consisted primarily of a $30.0 million interest bearing time deposit set up by our Cyprus entity in the United Kingdom in March 2015 and $76.9 million net cash used in the business combinations with NavigationArts and AGS. The cash spent on acquisitions of businesses in 2015 increased by $39.8 million compared to 2014.
Net cash used in investing activities duringFinancing Activities
2016 Compared to 2015
During the year ended December 31, 2014 increased $31.12016, net cash provided by financing activities was $10.5 million, to $52.9representing a $23.3 million as compared to $21.8 decrease from $33.8 million usedcash provided by financing activities in investing activities during the corresponding period of 2013.2015. The increasedecrease was primarily attributable to $37.1a $45.1 million spent ondecrease related to borrowings under our revolving credit facility coupled with lower proceeds related to our long-term incentive plans. This was partially offset by lower payments of deferred consideration related to acquisitions of businesses, partially offset by a net $6.2which decreased $28.0 million decrease in loans issued under the Employee Housing Program2016 compared to the corresponding period last year.
Financing Activities
2015 Compared to 2014
Net cash provided by financing activities during the year ended December 31, 2015 was $33.8 million, a decrease of $23.4 million from the same period in 2014 primarily due to payment of deferred consideration in the amount of $30 million as well as a decrease in excess tax benefit on stock-based compensation, plans, partly offset by higher proceeds from stock option exercises.
Net cash provided by financing activities during the year ended December 31, 2014 was $10.3 million, a decrease of $5.2 million from the same period in 2013 primarily due to payment of deferred consideration in the amount of $4 million as well as a decrease in excess tax benefit on stock-based compensation plans, partly offset by higher proceeds from stock option exercises.
Contractual Obligations and Future Capital Requirements
Contractual Obligations
Set forth below is information concerning our significant fixed and determinable contractual obligations as of December 31, 2015.2016.
 Total 
Less than 1
Year
 1-3 Years 3-5 Years 
More than 5
Years
 (in thousands)
Operating lease obligations$100,080
 $30,791
 $40,750
 $17,441
 $11,098
Long-term debt obligation (1)
26,133
 424
 25,709
 
 
Long-term incentive plan payouts(2)
13,152
 3,288
 6,576
 3,288
 
 Total contractual obligations$139,365
 $34,503
 $73,035
 $20,729
 $11,098
(1)We estimate our future obligations for interest on our floating rate 2014 Credit Facility by assuming the weighted average interest rates in effect on each floating rate debt obligation at December 31, 2016 remain constant into the future. This is an estimate, as actual rates will vary over time. In addition, for the Revolving Credit Facility, we assume that the balance outstanding as of December 31, 2016 remains the same for the remaining term of the agreement. The actual balance outstanding under our Revolving Credit Facility may fluctuate significantly in future periods, depending on the availability of cash flow from operations and future investing and financing considerations.
(2)We estimate our future obligations for long-term incentive plan payouts by assuming the price per share of our common stock in effect at December 31, 2016 remains constant into the future. This is an estimate, as actual prices will vary over time.
 Total 
Less than 1
Year
 1-3 Years 3-5 Years 
More than 5
Years
 (in thousands)
Operating lease obligations$49,616
 $17,606
 $23,400
 $5,946
 $2,664
Long-term debt obligation$65,000
 $
 $
 $65,000
 $
 $114,616
 $17,606
 $23,400
 $70,946
 $2,664
Letter of credit
DuringAt December 31, 2016, we had an irrevocable standby letter of credit in the amount $0.9 million under the revolving credit facility, which is required to secure commitments for certain insurance policies. The letter of credit expires on April 27, 2017 with a possibility of automatic extension for an additional period of one year from the present or any future expiration date. No amounts were outstanding against this letter of credit during the year ended December 31, 2015, the Company completed construction of the office building within the High Technologies Park in Minsk, Belarus, and, therefore, no future capital requirements exist related to this construction. See Note 15in the notes to our consolidated financial statements in this Annual Report on Form 10-K for further information.2016.
Future Capital Requirements

43


We believe that our existing cash and cash equivalents combined with our expected cash flow from operations will be sufficient to meet our projected operating and capital expenditure requirements for at least the next twelve months and that we possess the financial flexibility to execute our strategic objectives, including the ability to make acquisitions and strategic investments in the foreseeable future. Our ability to generate cash, however, is subject to our performance, general economic conditions, industry trends and other factors. To the extent that existing cash and cash equivalents and operating cash flow are insufficient to fund our future activities and requirements, we may need to raise additional funds through public or private equity or debt financing. If we issue equity securities in order to raise additional funds, substantial dilution to existing stockholders may occur. If we raise cash through the issuance of additional indebtedness, we may be subject to additional contractual restrictions on our business. There is no assurance that we would be able to raise additional funds on favorable terms or at all.
Off-Balance Sheet Commitments and Arrangements
We do not have any obligations under guarantee contracts or other contractual arrangements other than as disclosed in Note 1516 in the notes to our consolidated financial statements in this Annual Report on Form 10-K. We have not entered into any transactions with unconsolidated entities where we have financial guarantees, subordinated retained interests, derivative instruments, or other contingent arrangements that expose us to material continuing risks, contingent liabilities, or any other obligation under a variable interest in an unconsolidated entity that provides financing, liquidity, market risk, or credit risk support to us, or engages in leasing, hedging, or research and development services with us.

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Critical Accounting Policies
We prepare our consolidated financial statements in accordance with U.S. generally accepted accounting principles (GAAP), which require us to make judgments, estimates and assumptions that affect: (i) the reported amounts of assets and liabilities, (ii) disclosure of contingent assets and liabilities at the end of each reporting period and (iii) the reported amounts of revenues and expenses during each reporting period. We evaluate these estimates and assumptions based on historical experience, knowledge and assessment of current business and other conditions, and expectations regarding the future based on available information and reasonable assumptions, which together form a basis for making judgments about matters not readily apparent from other sources. Since the use of estimates is an integral component of the financial reporting process, actual results could differ from those estimates. Some of our accounting policies require higher degrees of judgment than others in their application. When reviewing our audited consolidated financial statements, you should consider (i) our selection of critical accounting policies, (ii) the judgment and other uncertainties affecting the application of such policies and (iii) the sensitivity of reported results to changes in conditions and assumptions. We consider the policies discussed below to be critical to an understanding of our consolidated financial statements as their application places significant demands on the judgment of our management.
An accounting policy is considered to be critical if it requires an accounting estimate to be made based on assumptions about matters that are highly uncertain at the time the estimate is made, and if different estimates that reasonably could have been used, or changes in the accounting estimates that are reasonably likely to occur periodically, could materially impact the consolidated financial statements. We believe that the following critical accounting policies are the most sensitive and require more significant estimates and assumptions used in the preparation of our consolidated financial statements. You should read the following descriptions of critical accounting policies, judgments and estimates in conjunction with our audited consolidated financial statements and other disclosures included in this annual report.
Revenue Recognition — We recognize revenue when realized or realizable and earned, which is when the following criteria are met: persuasive evidence of an arrangement exists; delivery has occurred; the sales price is fixed or determinable; and collectability is reasonably assured. Determining whether and when some of these criteria have been satisfied often involves assumptions and judgments that can have a significant impact on the timing and amount of revenue we report. If there is an uncertainty about the project completion or receipt of payment for the consulting services, revenues are deferred until the uncertainty is sufficiently resolved. At the time revenues are recognized, we provide for any contractual deductions and reduce revenues accordingly. We defer amounts billed to our clients for revenues not yet earned. Such amounts are anticipated to be recorded as revenues as services are performed in subsequent periods. Unbilled revenues represent services provided which are billed subsequent to the period end in accordance with the contract terms.
We derive our revenues from a variety of service offerings, which represent specific competencies of our IT professionals. Contracts for these services have different terms and conditions based on the scope, deliverables, and complexity of the engagement, which require management to make judgments and estimates in determining appropriate revenue recognition pattern. Fees for these contracts may be in the form of time-and-materials or fixed-price arrangements.
The majority of our revenues (85.8% of revenues in 2015, 84.7% in 2014 and 82.3% in 2013) are generated under time-and-material contracts whereby revenues are recognized as services are performed with the corresponding cost of providing those services reflected as cost of revenues when incurred. The majority of such revenues are billed on an hourly, daily or monthly basis whereby actual time is charged directly to the client.
Revenues from fixed-price contracts (12.8% of revenues in 2015, 13.6% in 2014 and 15.7% in 2013) are determined using the proportional performance method. In instances where final acceptance of the product, system, or solution is specified by the client, revenue is deferred until all acceptance criteria have been met. In absence of a sufficient basis to measure progress towards completion, revenue is recognized upon receipt of final acceptance from the client. In order to estimate the amount of revenue for the period under the proportional performance method, we determine the percentage of actual labor hours incurred as compared to estimated total labor hours and apply that percentage to the consideration allocated to the deliverable. The complexity of the estimation process and factors relating to the assumptions, risks and uncertainties inherent with the application of the proportional performance method of accounting affects the amounts of revenues and related expenses reported in our consolidated financial statements. A number of internal and external factors can affect such estimates, including labor hours and specification and testing requirement changes. The cumulative impact of any revision in estimates is reflected in the financial reporting period in which the change in estimate becomes known. No significant revisions occurred in each of the three years ended December 31, 2015, 2014 and 2013. Our fixed price contracts are generally recognized over a period of 12 months or less.
We report gross reimbursable “out-of-pocket” expenses incurred as both revenues and cost of revenues in the consolidated statements of income and comprehensive income as these expenses are billable to our clients.

45


Business Combinations — We account for our business combinations using the acquisition accounting method, which requires us to determine the fair value of net assets acquired and the related goodwill and other intangible assets in accordance with the FASB ASC Topic 805, “Business Combinations.” We identify and attribute fair values and estimated lives to the intangible assets acquired and allocate the total cost of an acquisition to the underlying net assets based on their respective estimated fair values. Determining the fair value of assets acquired and liabilities assumed requires management’s judgment and involves the use of significant estimates, including projections of future cash inflows and outflows, discount rates, asset lives and market multiples. There are different valuation models for each component, the selection of which requires considerable judgment. These determinations will affect the amount of amortization expense recognized in future periods. We base our fair value estimates on assumptions we believe are reasonable, but recognize that the assumptions are inherently uncertain.
If initial accounting for the business combination has not been completed by the end of the reporting period in which the business combination occurs, provisional amounts are reported for which the accounting is incomplete, with retrospective adjustment made to such provisional amounts during the measurement period to present new information about facts and circumstances that existed as of the acquisition date. Once the measurement period ends, and in no case beyond one year from the acquisition date, revisions of the accounting for the business combination are recorded in earnings.
All acquisition-related costs, other than the costs to issue debt or equity securities, are accounted for as expenses in the period in which they are incurred. Changes in fair value of contingent consideration arrangements that are not measurement period adjustments are recognized in earnings. Payments to settle contingent consideration, if any, are reflected in cash flows from financing activities and the changes in fair value are reflected in cash flows from operating activities in our consolidated statements of cash flows.
The acquired assets typically consist of customer relationships, trade names, non-competition agreements, and workforce and as a result, a substantial portion of the purchase price is allocated to goodwill and other intangible assets.
Goodwill and Other Intangible Assets — Goodwill and intangible assets that have indefinite useful lives are treated consistently with FASB ASC 350, “Intangibles - Goodwill and Other.” We do not have any intangible assets with indefinite useful lives.
We assess goodwill for impairment annually, and more frequently in certain circumstances. Events or circumstances that might require impairment testing of goodwill and other intangible assets include the loss of a significant client, the identification of other impaired assets within a reporting unit, loss of key personnel, the disposition of a significant portion of a reporting unit, significant decline in stock price or a significant adverse change in business climate or regulations. We initially perform a qualitative assessment of goodwill to test for impairment indicators. After applying the qualitative assessment, if we conclude that it is not more likely than not that the fair value of goodwill is less than the carrying amount; the two-step goodwill impairment test is not required.
If we determine that it is more likely than not that the carrying amount exceeds the fair value, we perform a quantitative impairment test. If an indicator of impairment is identified, the implied fair value of the reporting unit’s goodwill is compared to its carrying amount, and the impairment loss is measured by the excess of the carrying value over the fair value. The fair values are estimated using a combination of the income approach, which incorporates the use of the discounted cash flow method, and the market approach, which incorporates the use of earnings multiples based on market data. These valuations are considered Level 3 measurements under FASB ASC Topic 820. We utilize estimates to determine the fair value of the reporting units such as future cash flows, growth rates, capital requirements, effective tax rates and projected margins, among other factors. Estimates utilized in the future evaluations of goodwill for impairment could differ from estimates used in the current period calculations. We are also required to assess the goodwill of its reporting units for impairment between annual assessment dates as events or circumstances dictate. Based on our assessment, these operating segments are not at risk for impairment.
Intangible assets that have finite useful lives are amortized over their estimated useful lives on a straight-line basis. When facts and circumstances indicate potential impairment of amortizable intangible assets, we evaluate the recoverability of the asset’s carrying value, using estimates of future cash flows that utilize a discount rate determined by the management to be commensurate with the risk inherent in our business model over the remaining asset life. The estimates of future cash flows attributable to intangible assets require significant judgment based on our historical and anticipated results. Any impairment loss is measured by the excess of carrying value over fair value. All of our intangible assets have finite lives.
Effective in the fourth quarter of 2013, we changed the annual goodwill impairment assessment date for all of our reporting units from December 31st to October 31st, which represented a voluntary change in the annual goodwill impairment testing date. 

46


Income Taxes The provision for income taxes includes federal, state, local and foreign taxes. Deferred tax assets and liabilities are recognized for the estimated future tax consequences of temporary differences between the consolidated financial statement carrying amounts and their respective tax bases. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the year in which the temporary differences are expected to be reversed. Changes to enacted tax rates would result in either increases or decreases in the provision for income taxes in the period of changes. We evaluate the realizability of deferred tax assets and recognize a valuation allowance when it is more likely than not that all or a portion of deferred tax assets will not be realized.
The realization of deferred tax assets is primarily dependent on future earnings. Any reduction in estimated forecasted results may require that we record valuation allowances against deferred tax assets. Once a valuation allowance has been established, it will be maintained until there is sufficient positive evidence to conclude that it is more likely than not that the deferred tax assets will be realized. A pattern of sustained profitability will generally be considered as sufficient positive evidence to reverse a valuation allowance. If the allowance is reversed in a future period, the income tax provision will be correspondingly reduced. Accordingly, the increase and decrease of valuation allowances could have a significant negative or positive impact on future earnings.
Stock-Based Compensation — Equity-based compensation cost relating to the issuance of share-based awards to employees is based on the fair value of the award at the date of grant, which is expensed ratably over the requisite service period, net of estimated forfeitures. Over time, the forfeiture assumption is adjusted to the actual forfeiture rate and such change may affect the timing of the total amount of expense recognized over the vesting period. Equity-based awards that do not require future service are expensed immediately. Equity-based awards that do not meet the criteria for equity classification are recorded as liabilities and adjusted to fair value at the end of each reporting period.
Recent Accounting Pronouncements
See Note 1 in the notes to our consolidated financial statements in this Annual Report on Form 10-K for information regarding the impact of certain recent accounting pronouncements on our consolidated financial statements.
Item 7A. Quantitative and Qualitative Disclosures About Market Risk
We are exposed to certain market risks in the ordinary course of our business. These risks result primarily from changes in foreign currency exchange rates and interest rates, and concentration of credit risks. In addition, our international operations are subject to risks related to differing economic conditions, changes in political climate, differing tax structures, and other regulations and restrictions.
Concentration of Credit and Other Credit Risks
Financial instruments that potentially subject us to significant concentrations of credit risk consist primarily of employee loans receivable, cash and cash equivalents, trade accounts receivable and unbilled revenues.
At December 31, 2015, outstanding loans issued to employees were $6.3 million, or 0.8%, of our total assets. These loans potentially expose us to a risk of non-payment and loss. Repayment of these loans is primarily dependent on the personal income of borrowers obtained through their employment with EPAM and may be adversely affected by macroeconomic changes, such as currency devaluation and inflation. Given a large demand for the program among our employees and its advantages as compared to alternative methods of financing available on the market, we expect the borrowers to fulfill their obligations, and we estimate the probability of voluntary termination of employment among the borrowers as de minimis. Additionally, housing loans are capped at $50 thousand per loan and secured by real estate financed through the program. We establish a maximum loan-to-value ratio of 70% and expect a decrease in the ratio over the life of a housing loan due to on-going payments by employees.
We maintain our cash and cash equivalents and short-term investments with financial institutions. We believe that our credit policies reflect normal industry terms and business risk. We do not anticipate non-performance by the counterparties. We hold a significant balance of cash in banks in the CIS countries where banking and other financial systems generally do not meet the banking standards of more developed markets and bank deposits made by corporate entities in the CIS region are not insured. As of December 31, 2015, $103.72016, $194.6 million of total cash was held in banks in CIS countries, with $79.5$153.8 million of that in Belarus, and $10.5$18.6 million in Russia. The CIS banking sector remains subject to periodic instability and the transparency of the banking sector lags behind international standards. Particularly in Belarus, a banking crisis, bankruptcy or insolvency of banks that process or hold our funds, may result in the loss of our deposits or adversely affect our ability to complete banking transactions in the CIS region, which could materially adversely affect our business and financial condition. Cash in other CIS locations is used for short-term operational needs and cash balances in those banks move with the needs of the entities.

47


Trade accounts receivable and unbilled revenues are generally dispersed across our clients in proportion to their revenues. As of December 31, 2015, billed and2016, unbilled trade receivables from one customer, UBS AG,two customers, individually exceeded 10% and accounted for 12.4% and 19.8%22.2% of our total billed and unbilled trade receivables. There were no customers individually exceeding 10% of our billed trade receivables respectively.as of December 31, 2016.
During the year ended December 31, 2016, our top five customers accounted for 28.2% of our total revenues, and our top ten customers accounted for 38.1% of our total revenues. During the year ended December 31, 2015, our top five customers accounted for 32.6% of our total revenues, and our top ten customers accounted for 43.8% of our total revenues, respectively. During the year ended December 31, 2014, our top five customers accounted for 32.8% of our total revenues, and our top ten customers accounted for 43.9% of our total revenues, respectively.revenues.
During the years ended December 31, 20152016 and 2014,2015, the Company had one customer, UBS AG, with associatedwhich contributed revenues of $129.8$136.5 million and $97.6$129.8 million, respectively, which accounted for more than 10% of total revenues in the periods indicated.
Historically, credit losses and write-offs of trade accounts receivable balances have not been material to our consolidated financial statements.
Interest Rate Risk
Our exposure to market risk is mainly influenced by the changes in interest rates received on our cash and cash equivalent deposits and paid on any outstanding balance on our revolving line of credit facility, which is subject to a variety of rates depending on the type and timing of funds borrowed.
As of December 31, 2015,2016, we have borrowed under the line ofour revolving credit facility and have outstanding debt of $35.0 million.$25.0 million. The interest rate for this debt is based on LIBOR, which is set to change quarterly, according to the 2014 Credit Facility agreement.resets regularly at issuance, based on lending terms. We do not believe we are exposed to material direct risks associated with changes in interest rates related to this borrowing.
We offer loans under the Employee Housing Program and these loans are designed to be a retention mechanism for our employees in Belarus. These loans are financed with available funds of our Belarusian subsidiary and we do not believe that employee loans issued by us under the Employee Housing Program expose us to significant interest rate risks.
We have not been exposed to material risks due to changes in market interest rates and we do not use derivative financial instruments to hedge our risk of interest rate volatility. However, our future interest expense may increase and interest income may fall due to changes in market interest rates.
Foreign Exchange Risk
Our consolidated financial statementsglobal operations are reportedconducted predominantly in U.S. dollars; however, our business is conducted in various currencies. Outside of the United States,dollars. Other than U.S. dollars, we operate primarily through wholly-owned subsidiaries in Canada, Europe, Asia, and the CIS and CEE regions and generate a significant portion of our revenues in various currencies, other than the U.S. dollar, principally, euros, British pounds, sterling, Canadian dollars, Swiss francs and Russian rubles. Werubles and incur expenditures in non-U.S. dollar currencies, principally in Hungarian forints, euros, Russian rubles, Polish zlotys, Mexican pesos, Hong Kong dollarsSwiss francs, British pounds, Indian rupees and China yuan renminbi (“CNY”) associated with our delivery centers located in the CEE, Europe, Mexico and APAC regions.centers.

Our international operations expose us to foreign currency exchange rate changes that could impact translations of foreign denominated assets and liabilities into U.S. dollars and future earnings and cash flows from transactions denominated in different currencies. We are exposed to fluctuations in foreign currency exchange rates primarily on accounts receivable and unbilled revenues from sales in these foreign currencies and cash outflows for expenditures in foreign currencies. Our results of operations, primarily revenues and expenses denominated in foreign currencies, can be affected if any of the currencies, which we use materially in our business, appreciate or depreciate against the U.S. dollar. Our exchange rate risk primarily arises from our foreign currency revenues and expenses. Our exposureAdditionally, to currency exchange rate changes is naturally diversified due to the variety of countries and currencies in which we conduct business.
Based on our results of operations for the year ended December 31, 2015, if currencies were not impacted by foreign exchange fluctuations and results were evaluated on the constant currency basis using rates from the year 2014 our consolidated revenue would have been higher by 5.7%. Revenue has been negatively impacted by all currencies when compared on the constant currency basis to the year 2014 with main differences coming from the decline in the Russian ruble, euro, British pound sterling and Canadian dollar. If compared on the same constant currency basis, our net income would have been lower by 1.5% as the impact from the currency declines also had some favorable impact on the expenses at our offshore delivery centers. Net income for the year 2015 compared on the constant currency basis to the year 2014 was impacted positively by the Russian ruble, Hungarian forint and Polish zloty and was offset mostly by the negative impact from the euro, British pounds sterling and Canadian dollar. Overall, the most significant impact on the 2015 results was from the euro, the Russian ruble and Canadian dollar fluctuations.

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To the extent that we need to convert U.S. dollars into foreign currencies for our operations, appreciation of such foreign currencies against the U.S. dollar would adversely affect the amount of such foreign currencies we receive from the conversion. Changes in the currency exchange rates resulted in our reporting a net transactional foreign currency exchange losses of $4.6 million and $2.2 million during the years ended December 31, 2015, and 2014, respectively. The increase in net foreign exchange loss for
During the year ended December 31, 2015 as2016, foreign exchange losses increased $7.5 million to $12.1 million compared to 2014a $4.6 million loss reported in the corresponding period last year. The increase in the reported loss in fiscal 2016 was primarily attributabledriven by unfavorable movements of the British pound. For the year ended December 31, 2016, the British pound fell 16.3% relative to changesthe U.S. dollar with significant depreciation following the June 2016 referendum, in which voters in the United Kingdom approved an exit from the European Union. The depreciation of the British pound adversely affected the value of our monetary assets denominated in British pounds, as well as the U.S. dollar-equivalent of the British pound-denominated revenues. During the year ended December 31, 2016, approximately 36% of consolidated revenues and 40% of operating expenses were denominated in currencies other than U.S. dollar. We are monitoring the developments relating to Brexit as we have a significant operating presence in the U.K. and collect revenues and incur expenses in currencies that may be affected.
Management supplements results reported in accordance with United States generally accepted accounting principles, referred to as GAAP, with non-GAAP financial measures. Management believes these measures help illustrate underlying trends in our business and uses the measures to establish budgets and operational goals, communicated internally and externally, for managing our business and evaluating its performance. When important to management’s analysis, operating results are compared on the basis of “constant currency”, which is a non-GAAP financial measure. This measure excludes the effect of foreign currency exchange rate fluctuations by translating the current period revenues and expenses into U.S. dollars at the weighted average exchange rates of Russian ruble, euro,the prior period of comparison.
During the year ended December 31, 2016, we reported revenue growth of 26.9%. Had our consolidated revenues been expressed in constant currency terms using the exchange rates in effect during fiscal 2015, we would have reported revenue growth of 29.4%. The decrease in revenues expressed in constant currency terms was primarily related to the depreciation of the British pound sterling and Canadian dollar against U.S. dollar in the periods indicated, including realized losses from foreign currency conversions. These losses are included in our consolidated statements of income and comprehensive income.
Additionally, foreign currency translation adjustments from translating financial statements of our foreign subsidiaries from functional currencyrelative to the U.S. dollars are recorded as a separate component of stockholders’ equity or included in the consolidated statements of income and comprehensive income if local currencies of our foreign subsidiaries differ from their functional currencies. As of December 31, 2015, approximately 23.6% of our total net assets were subject to foreign currency translation exposure, as compared to 21.9% as of December 31, 2014.dollar. During the yearsyear ended December 31, 2015 and 2014,2016, foreign currency fluctuation did not have a significant impact on our net income generated by foreign subsidiaries forexpressed in constant currency terms as we continue to be naturally diversified across locations and currencies in which the functional currency was not U.S. dollars was 37.0% and 35.1%, respectively. During the years ended December 31, 2015 and 2014, we recorded $13.1 million and $20.3 million of translation losses, respectively, within our consolidated statements of income and comprehensive income.operate.
Item 8. Financial Statements and Supplementary Data
The information required is included in this Annual Report on Form 10-K beginning on page F-1.
Item 9. Changes In and Disagreements with Accountants on Accounting and Financial Disclosure
None.
Item 9A. Controls and Procedures
Conclusion Regarding the Effectiveness of Disclosure Controls and Procedures
Based on management’s evaluation, with the participation of our Chief Executive Officer (CEO) and Chief Financial Officer (CFO), as of the end of the period covered by this report, our CEO and CFO have concluded that our disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934, as amended (the Exchange Act) are effective to provide reasonable assurance that information required to be disclosed by us in reports that we file or submit under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in SEC rules and forms, and is accumulated and communicated to management, including our principal executive officer and principal financial officer, as appropriate, to allow timely decisions regarding required disclosure.
Changes in Internal Control Over Financial Reporting
There were no changes in our internal control over financial reporting during the quarter ended December 31, 20152016 that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

Management’s Report on Internal Control Over Financial Reporting
Our management is responsible for establishing and maintaining adequate internal control over financial reporting as defined in Rules 13a-15(f) and 15d-15(f) under the Exchange Act to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with U.S. generally accepted accounting principles.
Under the supervision and with the participation of our management, including our principal executive officer and principal financial officer, we conducted an evaluation of the effectiveness of our internal control over financial reporting based on the criteria established in Internal Control — Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission.
Based on this assessment, management concluded that our internal control over financial reporting was effective as of December 31, 20152016 to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with U.S. generally accepted accounting principles.
The effectiveness of our internal control over financial reporting as of December 31, 20152016 has been audited by Deloitte & Touche LLP, an independent registered public accounting firm, as stated in their report, which appears in Part IV. Item 15 of this Annual Report on Form 10-K.

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Inherent Limitations on Effectiveness of Controls
Our management, including the CEO and CFO, does not expect that our disclosure controls or our internal control over financial reporting will prevent or detect all errors 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, have been detected. 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 the effectiveness of controls 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.
Item 9B. Other Information
None.The information provided in “Part III, Item 11. Executive Compensation” relating to Anthony Conte’s, the Company’s Senior Vice President, Chief Financial Officer and Treasurer, transition agreement with us is incorporated herein by reference.

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PART III
Item 10. Directors, Executive Officers and Corporate Governance
We incorporate by reference the information required by this Item from the information set forth under the captions “Board of Directors”, “Corporate Governance”, “Our Executive Officers”, and “Section 16(a) Beneficial Ownership Reporting Compliance” in our definitive proxy statement for our 20162017 annual meeting of stockholders, to be filed within 120 days after the end of the year covered by this Annual Report on Form 10-K, pursuant to Regulation 14A under the Securities Exchange Act of 1934, as amended ( our “2016“2017 Proxy Statement”).
Item 11. Executive Compensation
We incorporate by reference the information required by this Item from the information set forth under the captions “Executive Compensation” and “Compensation Committee Interlocks and Insider Participation” in our 20162017 Proxy Statement.
The following information is being provided instead of reporting the information under Item 5.02 of a Current Report on Form 8-K:
On November 2, 2016, Anthony Conte indicated that he intends to resign as the Company’s Senior Vice President, Chief Financial Officer and Treasurer, effective in the third quarter of 2017, or at such earlier date determined by the Board, following the appointment of his successor. As part of facilitating a smooth transition, we have entered into a transition agreement with Mr. Conte, dated as of February 23, 2017 (the “Transition Agreement”), which provides for the following terms. Mr. Conte will continue to serve as CFO until August 10, 2017, or an earlier date the Board selects upon identifying his successor. We will continue to provide Mr. Conte his base salary and continued health benefits, each at its current level, until August 10, 2017, unless he voluntarily terminates his employment. Mr. Conte will receive his 2016 annual bonus on the same terms as other executives, and if Mr. Conte remains employed through August 10, 2017, we will pay him a bonus for the 2017 partial year of $125,000. In the event Mr. Conte voluntarily terminates his employment prior to August 10, 2017, he will receive a pro-rated bonus for 2017. Mr. Conte has not and will not receive equity grants in 2017. Upon his departure on August 10, 2017, Mr. Conte’s outstanding, unvested options and restricted stock units that would have vested prior to March 31, 2018, will vest. If Mr. Conte’s employment terminates due to his death or disability, he will receive all of the benefits described above as if he had remained employed until August 10, 2017. In order to receive the benefits described above, Mr. Conte will execute a standard release of claims. The Transition Agreement provides for standard restrictive covenants, including a non-competition clause for one year.
The foregoing description of the Transition Agreement does not purport to be a complete description of the parties’ rights and obligations under the Transition Agreement and the other documents and transactions contemplated by the Transition Agreement. As such, the foregoing description is qualified in its entirety by reference to the complete text of the Transition Agreement, a copy of which is filed as an exhibit to this Annual Report on Form 10-K as Exhibit 10.30 and is incorporated by reference herein.
Item 12. Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters

We incorporate by reference the information required by this Item from the information set forth under the caption “Security Ownership of Certain Beneficial Owners and Management” in our 20162017 Proxy Statement.

Equity Compensation Plan Information
The following table sets forth information about awards outstanding as of December 31, 20152016 and securities remaining available for issuance under our 2015 Long-Term Incentive Plan (the “2015 Plan”), our 2012 Long-Term Incentive Plan (the “2012 Plan”), the Amended and Restated 2006 Stock Option Plan (the “2006 Plan”) and the 2012 Non-Employee Directors Compensation Plan (the “2012 Directors Plan”) as of December 31, 2015.2016.
Plan Category 
Number of securities
to be issued upon
exercise of outstanding options, warrants
and rights 
 
Weighted average
exercise price of
outstanding options,
warrants and rights 
 
Number of securities
remaining available for
future issuance under
equity compensation
plans (excluding
securities reflected in
column (a)) 
 
Number of securities
to be issued upon
exercise of outstanding options, warrants
and rights 
 
Weighted average
exercise price of
outstanding options,
warrants and rights 
 
Number of securities
remaining available for
future issuance under
equity compensation
plans (excluding
securities reflected in
column (a)) 
Equity compensation plans approved by security holders: (1)
     7,211,440
 
(4) 
     6,750,537
 
(4) 
Stock options 7,450,914
 
(2) 
 $34.07
 
(3) 
    6,637,239
 
(2) 
 $37.20
 
(3) 
 
 
(5) 
Restricted stock unit awards 163,272
 $
 
(5) 
 
 
(5) 
Restricted stock unit and restricted stock awards 489,855
 $
 
(5) 
 
 
(5) 
Equity compensation plans not approved by security holders 
 
  
 $
 
  
 
 
  
 
 
  
 $
 
  
 
 
  
Total 7,614,186
   $34.07
   7,211,440
   7,127,094
   $37.20
   6,750,537
  
  
(1)This table includes the following stockholder approved plans: the 2015 Plan, 2012 Plan, the 2006 Plan and the 2012 Directors Plan.
(2)Represents the number of underlying shares of common stock associated with outstanding options under our stockholder approved plans and is comprised of 134,025414,235 shares underlying options granted under our 2015 Plan; 6,277,0285,539,460 shares underlying options granted under our 2012 Plan; and 1,039,861683,544 shares underlying options granted under our 2006 Plan.
(3)Represents the weighted-average exercise price of stock options outstanding under the 2015 Plan, the 2012 Plan and the 2006 Plan.
(4)Represents the number of shares available for future issuances under our stockholder approved equity compensation plans and is comprised of 7,450,9146,202,977 shares available for future issuance under the 2015 Plan and 554,070547,560 shares available for future issuances under the 2012 Directors Plan.
(5)Not applicable.
Item 13. Certain Relationships and Related Transactions, and Director Independence
We incorporate by reference the information required by this Item from the information set forth under the caption “Certain Relationships and Related Transactions and Director Independence” in our 20162017 Proxy Statement.
Item 14. Principal Accountant Fees and Services
We incorporate by reference the information required by this Item from the information set forth under the caption “Independent Registered Public Accounting Firm” in our 20162017 Proxy Statement.


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PART IV
Item 15. Exhibits, Financial Statement Schedules
(a)            We have filed the following documents as part of this annual report:
1.            Audited Consolidated Financial Statements
 Page
Report of Independent Registered Public Accounting FirmF-2
Consolidated Balance Sheets as of December 31, 20152016 and 20142015F-4
Consolidated Statements of Income and Comprehensive Income for Years Ended December 31, 2016, 2015 2014 and 20132014F-5
Consolidated Statements of Changes in Redeemable Preferred Stock and Stockholders’ Equity for Years Ended December 31, 2016, 2015 2014 and 20132014F-6
Consolidated Statements of Cash Flows for Years Ended December 31, 2016, 2015 2014 and 20132014F-8
Notes to Consolidated Financial Statements for Years Ended December 31, 2016, 2015 2014 and 20132014F-10
2.            Financial Statement Schedules
None. All schedules have been includedSchedule II Valuation and Qualifying Accounts is filed as part of this Annual Report on Form 10-K and should be read in theconjunction with our audited consolidated financial statements orand the notes thereto.related notes.
3.            Exhibits
A list of exhibits required to be filed as part of this Annual Report is set forth in the Exhibit Index.

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EXHIBIT INDEX
Exhibit
Number
 Description
   
3.1 Certificate of incorporation (incorporated herein by reference to Exhibit 3.1 to the Company’s Form 10-K for the fiscal year ended December 31, 2011, SEC File No. 001-35418, filed March 30, 2012 (the “2011 Form 10-K”))
3.2 Bylaws (incorporated herein by reference to Exhibit 3.2 to the 2011 Form 10-K)
4.1 Form of Common Stock Certificate (incorporated herein by reference to Exhibit 4.1 to Amendment No. 6 to Form S-1, SEC File No. 333-174827, filed January 23, 2012 (“Amendment No. 6”))
4.2 Amended and Restated Registration Rights Agreement dated February 19, 2008 (incorporated herein by reference to Exhibit 4.2 to Form S-1, SEC File No. 333-174827, filed June 10, 2011 (the “Registration Statement”))
4.3 Registration Rights Agreement dated April 26, 2010 (incorporated herein by reference to Exhibit 4.3 to the Registration Statement)
10.1† EPAM Systems, Inc. Amended and Restated 2006 Stock Option Plan (incorporated herein by reference to Exhibit 10.6 to Amendment No. 6)
10.2† Form of EPAM Systems, Inc. 2006 Stock Option Plan Award Agreement (under the EPAM Systems, Inc. Amended and Restated 2006 Stock Option Plan) (incorporated herein by reference to Exhibit 10.7 to Amendment No. 6)
10.3† EPAM Systems, Inc. 2012 Long-Term Incentive Plan (incorporated herein by reference to Exhibit 10.12 to Amendment No. 6)
10.4† Form of Senior Management Non-Qualified Stock Option Award Agreement (under the EPAM Systems, Inc. 2012 Long-Term Incentive Plan) (incorporated herein by reference to Exhibit 10.13 to Amendment No. 6)
10.5† Restricted Stock Award Agreement by and between Karl Robb and EPAM Systems, Inc. dated January 16, 2012 (incorporated herein by reference to Exhibit 10.14 to Amendment No. 6)
10.6† Form of Chief Executive Officer Restricted Stock Unit Award Agreement (under the EPAM Systems, Inc. 2012 Long-Term Incentive Plan) (incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2014, SEC File No. 001-35418, filed May 7, 2014 (the “Q1 2014 Form 10-Q”)
10.7† Form of Senior Management Restricted Stock Unit Award Agreement (under the EPAM Systems, Inc. 2012 Long-Term Incentive Plan) (incorporated by reference to Exhibit 10.2 to the Q1 2014 Form 10-Q)
10.8† Form of Chief Executive Officer Non-Qualified Stock Option Award Agreement (under the EPAM Systems, Inc. 2012 Long-Term Incentive Plan) (incorporated by reference to Exhibit 10.3 to the Q1 2014 Form 10-Q)
10.9† Form of Chief Executive Officer Restricted Stock Unit Award Agreement (under the EPAM Systems, Inc. 2012 Long-Term Incentive Plan) (incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2015, SEC File No. 001-35418, filed May 7, 2015 (the “Q1 2015 Form 10-Q”)
10.10† Form of Senior Management Restricted Stock Unit Award Agreement (under the EPAM Systems, Inc. 2012 Long-Term Incentive Plan) (incorporated by reference to Exhibit 10.2 to the Q1 2015 Form 10-Q)
10.11† EPAM Systems, Inc. 2015 Long-Term Incentive Plan (incorporated by reference to Exhibit 10.1 to the Company’s Current Report on Form 8-K, SEC File No. 001-35418, filed June 15, 2015)
10.12†* Form of Chief Executive Officer Non-Qualified Stock Option Award Agreement (under the EPAM Systems, Inc. 2015 Long-Term Incentive Plan)
10.13†* Form of Chief Executive Officer Restricted Stock Unit Award Agreement (under the EPAM Systems, Inc. 2015 Long-Term Incentive Plan)
10.14†* Form of Senior Management Non-Qualified Stock Option Award Agreement (under the EPAM Systems, Inc. 2015 Long-Term Incentive Plan)
10.15†* Form of Senior Management Restricted Stock Unit Award Agreement (under the EPAM Systems, Inc. 2015 Long-Term Incentive Plan)
10.16† Amended and Restated EPAM Systems, Inc. Non-Employee Directors Compensation Plan (incorporated herein by reference to Exhibit 10.3 to the Q1 2015 Form 10-Q)
10.17† Form of Non-Employee Director Restricted Stock Award Agreement (under the EPAM Systems, Inc. 2012 Non-Employee Directors Compensation Plan) (incorporated herein by reference to Exhibit 10.16 to Amendment No. 6)
10.18† Amended and Restated Non-Employee Director Compensation Policy (incorporated herein by reference to Exhibit 10.4 to the Q1 2015 Form 10-Q)

53


10.19† Form of Director Offer Letter (incorporated herein by reference to Exhibit 10.18 to Amendment No. 6)
10.20† Executive Employment Agreement by and between Arkadiy Dobkin and EPAM Systems, Inc. dated January 20, 2006 (expired except with respect to Section 8) (incorporated herein by reference to Exhibit 10.19 to Amendment No. 6)
10.21† Offer Letter by and between Ginger Mosier and EPAM Systems, Inc. dated February 24, 2010 (incorporated herein by reference to Exhibit 10.20 to Amendment No. 6)
10.22† Employment Contract by and between Balazs Fejes and EPAM Systems (Switzerland) GmbH. dated June 15, 2009 (incorporated herein by reference to Exhibit 10.21 to Amendment No. 6)
10.23† Consultancy Agreement by and between Landmark Business Development Limited, Balazs Fejes and EPAM Systems, Inc. dated January 20, 2006 (expired except with respect to Section 8) (incorporated herein by reference to Exhibit 10.22 to Amendment No. 6)
10.24† Consultancy Agreement by and between Landmark Business Development Limited, Karl Robb and EPAM Systems, Inc. dated January 20, 2006 (expired except with respect to Section 8) (incorporated herein by reference to Exhibit 10.23 to Amendment No. 6)
10.25† Form of nondisclosure, noncompete and nonsolicitation agreement (incorporated herein by reference to Exhibit 10.24 to Amendment No. 6)
10.26† Form of Indemnification Agreement (incorporated herein by reference to Exhibit 10.25 to Amendment No. 6)
10.27 Credit Agreement dated as of September 12, 2014 by and among EPAM Systems, Inc. (as borrower), the lenders and guarantors party thereto, and PNC Bank, National Association, as Administrative Agent (incorporated hereby by reference to Exhibit 10.1 to the Company’s Current Report on Form 8-K filed September 9, 2014, SEC File No. 001-35418)
18.110.28†* 
Offer Letter re Changes in Accounting Principles (incorporated herein by reference to Exhibit 18.1 to the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2013, SEC File No. 001-35418, filed March 11, 2014).and between Boris Shnayder and EPAM Systems, Inc. dated June 20, 2015


10.29†*Amended Non-Employee Director Compensation Policy
10.30†*Transition Agreement by and between Anthony Conte and EPAM Systems, Inc. dated February 23, 2017
21.1* Subsidiaries of the Registrant
23.1* Consent of Independent Registered Public Accounting Firm
31.1* Certification of the Chief Executive Officer pursuant to Rule 13a-14(a)/15d-14(a) of the Securities Exchange Act of 1934
31.2* Certification of the Chief Financial Officer pursuant to Rule 13a-14(a)/15d-14(a) of the Securities Exchange Act of 1934
32.1* Certification of the Chief Executive Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
32.2* Certification of the Chief Financial Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
101.INS** XBRL Instance Document
101.SCH** XBRL Taxonomy Extension Schema Document
101.CAL** XBRL Taxonomy Extension Calculation Linkbase Document
101.DEF** XBRL Taxonomy Extension Definition Linkbase Document
101.LAB** XBRL Taxonomy Extension Label Linkbase Document
101.PRE** XBRL Taxonomy Extension Presentation Linkbase Document
   
 Indicates management contracts or compensatory plans or arrangements
* Exhibits filed herewith
** As provided in Rule 406T of Regulation S-T, this information is furnished and not filed for purposes of Section 11 and 12 of the Securities Act of 1933, as amended, and Section 18 of the Securities Exchange Act of 1934, as amended.


54


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.

Date: February 22, 201628, 2017
 EPAM SYSTEMS, INC.
   
 By:/s/ Arkadiy Dobkin
  Name: Arkadiy Dobkin
  
Title: Chairman, Chief Executive Officer and President
(principal executive officer)
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
     
/s/ Arkadiy Dobkin 
Chairman, Chief Executive Officer and President
(principal executive officer)
 
 
February 22, 201628, 2017
Arkadiy Dobkin
     
/s/ Anthony J. Conte 
Senior Vice President, Chief Financial Officer and Treasurer
(principal financial officer and principal accounting officer)
 
 
February 22, 201628, 2017
Anthony J. Conte
/s/ Jill B. SmartDirector
February 28, 2017
                              Jill B. Smart
     
/s/ Karl Robb Director 
 
February 22, 201628, 2017
Karl Robb
  
     
/s/ Peter Kuerpick Director 
 
February 22, 201628, 2017
Peter Kuerpick
  
     
/s/ Richard Michael Mayoras Director 
 
February 22, 201628, 2017
Richard Michael Mayoras
  
     
/s/ Robert E. Segert Director 
 
February 22, 201628, 2017
Robert E. Segert
  
     
/s/ Ronald P. Vargo Director 
 
February 22, 201628, 2017
Ronald P. Vargo
  


55


EPAM SYSTEMS, INC.
FORM 10-K
FOR THE YEAR ENDED DECEMBER 31, 20152016
TABLE OF CONTENTS

INDEX TO CONSOLIDATED FINANCIAL STATEMENTS

F-1



REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Board of Directors and Stockholders of EPAM Systems, Inc.

We have audited the accompanying consolidated balance sheets of EPAM Systems, Inc. and subsidiaries (the "Company") as of December 31, 20152016 and 2014,2015, and the related consolidated statements of income and comprehensive income, changes in stockholders' equity, and cash flows for each of the three years in the period ended December 31, 2015.2016. Our audits also included the financial statement schedule listed in the Index at Item 15. These financial statements and financial statement schedule are the responsibility of the Company's management. Our responsibility is to express an opinion on the financial statements and financial statement schedules based on our audits.

We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements. An audit also includes assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall financial statement presentation. We believe that our audits provide a reasonable basis for our opinion.

In our opinion, such consolidated financial statements present fairly, in all material respects, the financial position of EPAM Systems, Inc. and subsidiaries as of December 31, 20152016 and 2014,2015, and the results of their operations and their cash flows for each of the three years in the period ended December 31, 2015,2016, in conformity with accounting principles generally accepted in the United States of America. Also, in our opinion, such financial statement schedule, when considered in relation to the basic consolidated financial statements and financial statement schedule taken as a whole, present fairly, in all material respects, the information set forth therein.

We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), the Company's internal control over financial reporting as of December 31, 2015,2016, based on the criteria established in Internal Control - Integrated Framework (2013)issued by the Committee of Sponsoring Organizations of the Treadway Commission and our report dated February 22, 201628, 2017 expressed an unqualified opinion on the Company's internal control over financial reporting.


/s/ DELOITTE & TOUCHE LLP

Philadelphia, Pennsylvania
February 22, 201628, 2017




F-2


REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Board of Directors and Stockholders of EPAM Systems, Inc.

We have audited the internal control over financial reporting of EPAM Systems, Inc. and subsidiaries (the "Company") as of December 31, 2015,2016, based on criteria established in Internal Control - Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission. 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 the Management’s Report on Internal Control overOver Financial Reporting. Our responsibility is to express an opinion on the Company's internal control over financial reporting based on our audit.

We conducted our audit in accordance with the standards of the Public Company Accounting Oversight Board (United States). 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.

A company's internal control over financial reporting is a process designed by, or under the supervision of, the company's principal executive and principal financial officers, or persons performing similar functions, and effected by the company's board of directors, management, and other personnel 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 the inherent limitations of internal control over financial reporting, including the possibility of collusion or improper management override of controls, material misstatements due to error or fraud may not be prevented or detected on a timely basis. Also, projections of any evaluation of the effectiveness of the internal control over financial reporting to future periods are subject to the risk that the controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

In our opinion, the Company maintained, in all material respects, effective internal control over financial reporting as of December 31, 2015,2016, based on the criteria established in Internal Control - Integrated Framework (2013)issued by the Committee of Sponsoring Organizations of the Treadway Commission.

We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), the consolidated financial statements and financial statement schedule as of and for the year ended December 31, 20152016 of the Company and our report dated February 22, 201628, 2017 expressed an unqualified opinion on those financial statements.statements and financial statement schedule.

DELOITTE & TOUCHE LLP
Philadelphia, Pennsylvania
February 22, 201628, 2017



F-3


EPAM SYSTEMS, INC. AND SUBSIDIARIES
CONSOLIDATED BALANCE SHEETS
(US Dollars in thousands, except share and per share data)
As of  
 December 31, 
 2015
 As of  
 December 31, 
 2014
As of  
 December 31, 
 2016
 As of  
 December 31, 
 2015
Assets      
Current assets      
Cash and cash equivalents$199,449
 $220,534
$362,025
 $199,449
Restricted cash2,400
 
Time deposits30,181
 
403
 30,181
Accounts receivable, net of allowance of $1,729 and $2,181, respectively174,617
 124,483
Accounts receivable, net of allowance of $1,434 and $1,729, respectively199,982
 174,617
Unbilled revenues95,808
 55,851
63,325
 95,808
Prepaid and other current assets14,344
 9,289
Employee loans, net of allowance of $0 and $0, respectively, current2,689
 2,434
Deferred tax assets, current11,847
 2,496
Prepaid and other assets, net of allowance of $644 and $0, respectively15,690
 14,344
Employee loans, net of allowance of $0 and $0, respectively2,726
 2,689
Deferred tax assets
 11,847
Total current assets528,935
 415,087
646,551
 528,935
Property and equipment, net60,499
 55,134
73,616
 60,499
Restricted cash, long-term238
 156
Employee loans, net of allowance of $0 and $0, respectively, long-term3,649
 4,081
Restricted cash239
 238
Employee loans, net of allowance of $0 and $0, respectively3,252
 3,649
Intangible assets, net46,860
 47,689
51,260
 46,860
Goodwill115,930
 57,417
109,289
 115,930
Deferred tax assets, long-term18,312
 11,094
Other long-term assets4,113
 3,368
Deferred tax assets31,005
 18,312
Other long-term assets, net of allowance of $132 and $0, respectively10,599
 4,113
Total assets$778,536
 $594,026
$925,811
 $778,536
      
Liabilities 
  
 
  
Current liabilities 
  
 
  
Accounts payable$2,576
 $4,641
$3,213
 $2,576
Accrued expenses and other liabilities60,384
 32,203
49,895
 63,796
Deferred revenue, current3,047
 3,220
Due to employees32,067
 24,518
32,203
 26,703
Deferred compensation due to employees5,900
 5,364
Taxes payable29,472
 24,704
25,008
 29,472
Contingent consideration, current (Note 2 and 16)
 35,524
Deferred tax liabilities, current365
 603
Total current liabilities127,911
 125,413
116,219
 127,911
Long-term debt35,000
 
25,048
 35,000
Deferred tax liabilities, long-term2,402
 4,563
Other long-term liabilities3,132
 2,402
Total liabilities165,313
 129,976
144,399
 165,313
Commitments and contingencies (Note 15)

 

Commitments and contingencies (Note 16)

 

Stockholders’ equity 
  
 
  
Common stock, $0.001 par value; 160,000,000 authorized; 50,177,044 and 48,748,298 shares issued, 50,166,537 and 48,303,811 shares outstanding at December 31, 2015 and December 31, 2014, respectively49
 48
Common stock, $0.001 par value; 160,000,000 authorized; 51,117,422 and 50,177,044 shares issued, 51,097,687 and 50,166,537 shares outstanding at December 31, 2016 and December 31, 2015, respectively50
 49
Additional paid-in capital303,363
 229,501
374,907
 303,363
Retained earnings345,054
 260,598
444,320
 345,054
Treasury stock(93) (4,043)(177) (93)
Accumulated other comprehensive loss(35,150) (22,054)(37,688) (35,150)
Total stockholders’ equity613,223
 464,050
781,412
 613,223
Total liabilities and stockholders’ equity$778,536
 $594,026
$925,811
 $778,536
The accompanying notes are an integral part of the consolidated financial statements.

F-4



EPAM SYSTEMS, INC. AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF INCOME AND COMPREHENSIVE INCOME
(US Dollars in thousands, except share and per share data)
For the Years Ended December 31,For the Years Ended December 31,
2015 2014 20132016 2015 2014
Revenues$914,128
 $730,027
 $555,117
$1,160,132
 $914,128
 $730,027
Operating expenses:     
     
Cost of revenues (exclusive of depreciation and amortization)566,913
 456,530
 347,650
737,186
 566,913
 456,530
Selling, general and administrative expenses222,759
 163,666
 116,497
264,658
 222,759
 163,666
Depreciation and amortization expense17,395
 17,483
 15,120
23,387
 17,395
 17,483
Goodwill impairment loss
 2,241
 

 
 2,241
Other operating expenses/(income), net1,094
 3,924
 (643)
Other operating expenses, net1,205
 1,094
 3,924
Income from operations105,967
 86,183
 76,493
133,696
 105,967
 86,183
Interest and other income, net4,731
 4,769
 3,077
4,848
 4,731
 4,769
Change in fair value of contingent consideration
 (1,924) 

 
 (1,924)
Foreign exchange loss(4,628) (2,075) (2,800)(12,078) (4,628) (2,075)
Income before provision for income taxes106,070
 86,953
 76,770
126,466
 106,070
 86,953
Provision for income taxes21,614
 17,312
 14,776
27,200
 21,614
 17,312
Net income$84,456
 $69,641
 $61,994
$99,266
 $84,456
 $69,641
Foreign currency translation adjustments(13,096) (20,251) (811)(2,538) (13,096) (20,251)
Comprehensive income$71,360
 $49,390
 $61,183
$96,728
 $71,360
 $49,390
          
Net income per share:     
     
Basic$1.73
 $1.48
 $1.35
$1.97
 $1.73
 $1.48
Diluted$1.62
 $1.40
 $1.28
$1.87
 $1.62
 $1.40
Shares used in calculation of net income per share:     
     
Basic48,721
 47,189
 45,754
50,309
 48,721
 47,189
Diluted51,986
 49,734
 48,358
53,215
 51,986
 49,734

The accompanying notes are an integral part of the consolidated financial statements.


F-5


EPAM SYSTEMS, INC. AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF CHANGES IN
STOCKHOLDERS’ EQUITY
(US Dollars in thousands, except share data) 
  
 Common Stock Additional Paid-in Capital Retained Earnings Treasury Stock Accumulated Other Comprehensive Income Total Stockholders’ Equity
 Shares Amount          
Balance, December 31, 201244,442,494
 $44
 $166,962
 $128,992
 $(8,697) $(1,021) $286,280
Stock-based compensation expense
 
 13,150
 
 
 
 13,150
Stock issued under the 2012 Non-Employee Directors Compensation Plan14,041
 
 
 
 
 
 
Stock issued in connection with acquisition of Empathy Lab1,483
 
 (13) 
 13
 
 
Proceeds from stock options exercises2,156,898
 2
 9,285
 
 
 
 9,287
Excess tax benefits
 
 6,201
 
 
 
 6,201
Currency translation adjustment
 
 
 
 
 (811) (811)
Net income
 
 
 61,994
 
 
 61,994
Balance, December 31, 201346,614,916
 $46
 $195,585
 $190,986
 $(8,684) $(1,832) $376,101
Stock issued in connection with acquisition of Netsoft (Note 2)2,289
 
 (21) 
 21
 
 
Stock issued in connection with acquisition of Jointech (Note 2)179,104
 
 1,158
 
 1,630
 
 2,788
Stock issued in connection with acquisition of GGA (Note 2)262,277
 
 (2,386) 
 2,386
 
 
Stock issued in connection with acquisition of Great Fridays (Note 2)90,864
 
 (827) 
 827
 
 
Stock issued under the 2012 Non-Employee Directors Compensation Plan (Note 14)7,738
 
 
 
 
 
 
Forfeiture of stock issued in connection with acquisition of Empathy Lab(24,474) 
 223
 
 (223) 
 
Stock-based compensation expense (net of liability awards)
 
 21,397
 
 
 
 21,397
Proceeds from stock options exercises1,171,097
 2
 10,596
 
 
 
 10,598
Excess tax benefits
 
 3,776
 
 
 
 3,776
Prior periods retained earning adjustment
 
 
 (29) 
 29
 
Currency translation adjustment
 
 
 
 
 (20,251) (20,251)
Net income
 
 
 69,641
 
 
 69,641
Balance, December 31, 201448,303,811
 $48
 $229,501
 $260,598
 $(4,043) $(22,054) $464,050
              
              
  
 Common Stock Additional Paid-in Capital Retained Earnings Treasury Stock Accumulated Other Comprehensive (Loss)/ Income Total Stockholders’ Equity
 Shares Amount          
Balance, December 31, 201346,614,916
 $46
 $195,585
 $190,986
 $(8,684) $(1,832) $376,101
Stock issued in connection with acquisitions (Note 3)534,534
 
 (2,076) 
 4,864
 
 2,788
Forfeiture of stock issued in connection with acquisitions(24,474) 
 223
 
 (223) 
 
Stock issued under the 2012 Non-Employee Directors Compensation Plan (Note 14)7,738
 
 
 
 
 
 
Stock-based compensation expense
 
 21,397
 
 
 
 21,397
Proceeds from stock option exercises1,171,097
 2
 10,596
 
 
 
 10,598
Excess tax benefits
 
 3,776
 
 
 
 3,776
Prior periods retained earnings adjustment
 
 
 (29) 
 29
 
Foreign currency translation adjustment
 
 
 
 
 (20,251) (20,251)
Net income
 
 
 69,641
 
 
 69,641
Balance, December 31, 201448,303,811
 $48
 $229,501
 $260,598
 $(4,043) $(22,054) $464,050
Stock issued in connection with acquisitions (Note 3)435,462
 
 1,118
 
 3,963
 
 5,081
Forfeiture of stock issued in connection with acquisitions(1,482) 
 13
 
 (13) 
 
Stock issued under the 2012 Non-Employee Directors Compensation Plan (Note 14)5,295
 
 
 
 
 
 
Restricted stock units vested17,625
 
 574
 
 
 
 574
Stock-based compensation expense
 
 43,120
 
 
 
 43,120
Proceeds from stock option exercises1,405,826
 1
 20,674
 
 
 
 20,675
Excess tax benefits
 
 8,363
 
 
 
 8,363
Foreign currency translation adjustment
 
 
 
 
 (13,096) (13,096)
Net income
 
 
 84,456
 
 
 84,456
Balance, December 31, 201550,166,537
 $49
 $303,363
 $345,054
 $(93) $(35,150) $613,223


F-6



Table of ContentsEPAM SYSTEMS, INC. AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF CHANGES IN

STOCKHOLDERS’ EQUITY
(Continued)
(US Dollars in thousands, except share data) 
  
 Common Stock Additional Paid-in Capital Retained Earnings Treasury Stock Accumulated Other Comprehensive Income Total Stockholders’ Equity
 Shares Amount          
Balance, December 31, 201448,303,811
 $48
 $229,501
 $260,598
 $(4,043) $(22,054) $464,050
Stock issued in connection with acquisition of Netsoft (Note 2)25,503
 
 (232) 
 232
 
 
Forfeiture of stock issued in connection with acquisition of Netsoft(1,482) 
 13
 
 (13) 
 
Stock issued in connection with acquisition of Jointech (Note 2)166,114
 
 3,488
 
 1,512
 
 5,000
Stock issued in connection with acquisition of GGA (Note 2)233,753
 
 (2,127) 
 2,127
 
 
Stock issued in connection with acquisition of Great Fridays (Note 2)10,092
 
 (11) 
 92
 
 81
Stock issued under the 2012 Non-Employee Directors Compensation Plan (Note 13)5,295
 
   
 
 
 
Restricted stock unites vested17,625
 
 574
 
 
 
 574
Stock-based compensation expense (net of liability awards & RSU)
 
 43,120
 
 
 
 43,120
Proceeds from stock options exercises1,405,826
 1
 20,674
 
 
 
 20,675
Excess tax benefits
 
 8,363
 
 
 
 8,363
Currency translation adjustment
 
 
 
 
 (13,096) (13,096)
Net income
 
 
 84,456
 
 
 84,456
Balance, December 31, 201550,166,537
 $49
 $303,363
 $345,054
 $(93) $(35,150) $613,223
  
 Common Stock Additional Paid-in Capital Retained Earnings Treasury Stock Accumulated Other Comprehensive (Loss)/ Income Total Stockholders’ Equity
 Shares Amount          
Balance, December 31, 201550,166,537
 $49
 $303,363
 $345,054
 $(93) $(35,150) $613,223
Forfeiture of stock issued in connection with acquisitions(9,228) 
 84
 
 (84) 
 
Stock issued under the 2012 Non-Employee Directors Compensation Plan (Note 14)6,510
 
 
 
 
 
 
Restricted stock units vested, net of shares withheld for taxes38,064
 
 2,069
 
 
 
 2,069
Stock-based compensation expense
 
 46,100
 
 
 
 46,100
Proceeds from stock option exercises895,804
 1
 18,027
 
 
 
 18,028
Excess tax benefits
 
 5,264
 
 
 
 5,264
Foreign currency translation adjustment
 
 
 
 
 (2,538) (2,538)
Net income
 
 
 99,266
 
 
 99,266
Balance, December 31, 201651,097,687
 $50
 $374,907
 $444,320
 $(177) $(37,688) $781,412
The accompanying notes are an integral part of the consolidated financial statements.



F-7


EPAM SYSTEMS, INC. AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF CASH FLOWS
(US Dollars in thousands) For the Years Ended December 31, For the Years Ended December 31,
 2015 2014 2013 2016 2015 2014
Cash flows from operating activities:            
Net income $84,456
 $69,641
 $61,994
 $99,266
 $84,456
 $69,641
Adjustments to reconcile net income to net cash provided by operating activities:  
  
    
  
  
Depreciation and amortization 17,395
 17,483
 15,120
 23,387
 17,395
 17,483
Bad debt expense 1,407
 817
 335
 1,539
 1,407
 817
Deferred taxes (15,328) (3,270) 41
 (3,304) (15,328) (3,270)
Stock-based compensation expense 45,833
 24,620
 13,150
 49,244
 45,833
 24,620
Impairment charges and acquisition related adjustments (1,183) 7,907
 
 
 (1,183) 7,907
Excess tax benefit on stock-based compensation plans (8,363) (3,776) (6,201) (5,264) (8,363) (3,776)
Other 3,883
 735
 1,199
 6,228
 3,883
 735
Changes in operating assets and liabilities:  
  
    
  
  
(Increase)/ decrease in operating assets:  
  
  
(Increase)/decrease in operating assets:  
  
  
Accounts receivable (47,694) (30,410) (17,302) (30,612) (47,694) (30,410)
Unbilled revenues (38,076) (11,134) (9,833) 34,777
 (38,076) (11,134)
Prepaid expenses and other assets (574) 565
 587
 (4,791) (574) 565
Increase/ (decrease) in operating liabilities:  
  
  
Increase/(decrease) in operating liabilities:  
  
  
Accounts payable (2,781) (2,603) (2,900) 741
 (2,781) (2,603)
Accrued expenses and other liabilities 26,563
 11,492
 501
 (13,926) 25,694
 9,978
Deferred revenues (869) (1,514) (2,325)
Due to employees 2,752
 7,453
 785
 5,261
 2,752
 7,453
Taxes payable 8,972
 16,868
 3,074
 2,271
 8,972
 16,868
Net cash provided by operating activities 76,393
 104,874
 58,225
 164,817
 76,393
 104,874
Cash flows from investing activities:  
  
  
Cash flows used in investing activities:  
  
  
Purchases of property and equipment (13,272) (11,916) (13,360) (29,317) (13,272) (11,916)
Payment for construction of corporate facilities (4,692) (3,924) (2,560) 
 (4,692) (3,924)
Employee housing loans (2,054) (1,740) (7,982)
Employee housing loans issued (2,006) (2,054) (1,740)
Proceeds from repayments of employee housing loans 2,249
 1,793
 2,189
 2,177
 2,249
 1,793
Increase in restricted cash and time deposits, net (29,944) 1,430
 429
(Increase)/decrease in restricted cash and time deposits, net 29,595
 (29,944) 1,430
Increase in other long-term assets, net (708) (1,479) (516) (4,327) (708) (1,479)
Payments for foreign currency derivatives (165) 
 
Acquisition of businesses, net of cash acquired (Note 2) (76,908) (37,093) (20)
Acquisition of businesses, net of cash acquired (Note 3) (5,500) (76,908) (37,093)
Other investing activities, net 56
 (165) 
Net cash used in investing activities (125,494) (52,929) (21,820) (9,322) (125,494) (52,929)
Cash flows from financing activities:  
  
    
  
  
Proceeds related to stock options exercises 20,675
 10,571
 9,300
Proceeds related to stock option exercises 17,996
 20,675
 10,571
Excess tax benefit on stock-based compensation plans 8,363
 3,776
 6,201
 5,264
 8,363
 3,776
Proceeds from borrowing under line of credit (Note 12) 35,000
 
 
Acquisition of business, deferred consideration (Note 2) (30,274) (4,000) 
Payments of withholding taxes related to net share settlements of restricted stock units
 (539) 
 
Proceeds from debt (Note 13) 20,000
 35,000
 
Repayment of debt (Note 13) (30,129) 
 
Proceeds from government grants 135
 
 
Acquisition of businesses, deferred consideration (Note 3) (2,260) (30,274) (4,000)
Net cash provided by financing activities 33,764
 10,347
 15,501
 10,467
 33,764
 10,347
Effect of exchange rate changes on cash and cash equivalents (5,748) (10,965) (811) (3,386) (5,748) (10,965)
Net increase/ (decrease) in cash and cash equivalents (21,085) 51,327
 51,095
Net increase/(decrease) in cash and cash equivalents 162,576
 (21,085) 51,327
Cash and cash equivalents, beginning of period 220,534
 169,207
 118,112
 199,449
 220,534
 169,207
Cash and cash equivalents, end of period $199,449
 $220,534
 $169,207
 $362,025
 $199,449
 $220,534
Supplemental disclosures of cash paid:      
Income taxes $25,071
 $11,756
 $10,207
Bank interest $124
 $7
 $26


EPAM SYSTEMS, INC. AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF CASH FLOWS
(Continued)
F-8


Noncash operating activities:
For the year 2014, included in the Impairment charges and acquisition related adjustments line reported amount is the goodwill impairment loss of $2,241, contingent consideration fair value adjustment of $1,924, and write off related to the building construction in Minsk, Belarus of $3,742.
Noncash financing activities recorded in connection with acquisitions of businesses:
Deferred consideration payable was $603 in 2015, $1,022 in 2014 and 0 in 2013.
Contingent consideration payable was $0 in 2015, $36,322 in 2014 and 0 in 2013.

                                                                                  (US Dollars in thousands) For the Years Ended December 31,
  2016 2015 2014
Supplemental disclosures of cash flow information:      
Cash paid during the year for:      
Income taxes $37,488
 $25,071
 $11,756
Bank interest $566
 $124
 $7
Supplemental disclosure of non-cash operating activities      
Goodwill impairment loss $
 $
 $2,241
Contingent consideration fair value adjustment $
 $
 $1,924
Write off related to the construction of a building in Minsk, Belarus

 $
 $
 $3,742
Prepaid and other current assets write-off related to vendor advance $
 $741
 $
Supplemental disclosure of non-cash investing and financing activities      
Deferred consideration payable $
 $603
 $1,022
Contingent consideration payable $
 $
 $36,322
The accompanying notes are an integral part of the consolidated financial statements.

F-9


EPAM SYSTEMS INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
AS OF DECEMBER 31, 20152016 AND 20142015
AND FOR THE YEARS ENDED DECEMBER 31, 20152016, 20142015 AND 20132014
(US Dollars in thousands, except share and per share data) 
1.NATURE OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
EPAM is a leading global provider of software product engineering, technology consultingdevelopment and digital expertiseplatform engineering services to clients located around the world, primarily in North America, Europe, Asia and the CIS region.Australia. The Company has expertise in various industries, including software and hi-tech, financial services, media and entertainment, travel and hospitality, retail and distribution and life sciences and healthcare.
The Company is incorporated in Delaware with headquarters in Newtown, PA. The Company EPAM serves clients worldwide utilizing an award-winning global delivery platform and its locations in over 20 countries across North America, Europe, Asia and Australia.
Principles of Consolidation — The consolidated financial statements include the financial statements of EPAM Systems, Inc. and its subsidiaries. All intercompany balances and transactions have been eliminated.
Use of Estimates — The preparation of financial statements in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions. These estimates and assumptions affect reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the financial statements, as well as revenues and expenses during the reporting period. The Company bases its estimates and judgments on historical experience, knowledge of current conditions and its beliefs of what could occur in the future, given available information. Actual results could differ from those estimates, and such differences may be material to the financial statements.
Reclassification — During the first quarter of 2016, the Company revised the classification of certain health insurance premium and other employee fringe benefit expenses between the cost of revenues and selling, general and administrative expenses line items on the statements of income and comprehensive income. The effect of this reclassification had no impact on total income from operations for the year ended December 31, 2016.
Revenue Recognition — The Company recognizes revenue when the following criteria are met: (1) persuasive evidence of an arrangement exists; (2) delivery has occurred; (3) the sales price is fixed or determinable; and (4) collectability is reasonably assured. Determining whether and when some of these criteria have been satisfied often involves assumptions and judgments that can have a significant impact on the timing and amount of revenue reported.
The Company derives its revenues from a variety of service offerings, which represent specific competencies of its IT professionals. Contracts for these services have different terms and conditions based on the scope, deliverables, and complexity of the engagement, which require management to make judgments and estimates in determining appropriate revenue recognition pattern.recognition. Fees for these contracts may be in the form of time-and-materials or fixed-price arrangements. If there is an uncertainty about the project completion or receipt of payment for the consulting services, revenue is deferred until the uncertainty is sufficiently resolved. At the time revenue is recognized, the Company provides for any contractual deductions and reduces the revenue accordingly. The Company reports gross reimbursable “out-of-pocket” expenses incurred as both revenues and cost of revenues in the consolidated statements of income and comprehensive income.
The Company defers amounts billed to its clients for revenues not yet earned. Such amounts are anticipated to be recorded as revenues when services are performed in subsequent periods. Unbilled revenue is recorded when services have been provided but billed subsequent to the period end in accordance with the contract terms.
The Company reports gross reimbursable “out-of-pocket” expenses incurred as both revenues and cost of revenues in the consolidated statements of income and comprehensive income.
The majority of the Company’s revenues (85.8%(88.2% of revenues in 2016, 85.8% in 2015 and 84.7% in 2014 and 82.3% in 2013) is2014) are generated under time-and-material contracts where revenues are recognized as services are performed with the corresponding cost of providing those services reflected as cost of revenues. The majority of such revenues are billed on an hourly, daily or monthly basis as actual time is charged directly toincurred on the client.

F-10


Revenues from fixed-price contracts (12.8%(10.4% of revenues in 2016, 12.8% in 2015 and 13.6% in 2014 and 15.7% in 2013)2014) are primarily determined using the proportional performance method. In instances where final acceptance of the product, system, or solution is specified by the client, and the acceptance criteria are not objectively determinable to have been met as the services are provided, revenues are deferred until all acceptance criteria have been met. In absence of a sufficient basis to measure progress towards completion, revenue is recognized upon receipt of final acceptance from the client. In order to estimate the amount of revenue for the period under the proportional performance method, the Company determines the percentage of actual labor hours incurred as compared to estimated total labor hours and applies that percentage to the consideration allocated to the deliverable. The complexity of the estimation process and factors relating to the assumptions, risks and uncertainties inherent with the application of the proportional performance method of accounting affects the amounts of revenues and related expenses reported in the Company’s consolidated financial statements. A number of internal and external factors can affect such estimates, including labor hours and specification and testing requirement changes. The cumulative impact of any revision in estimates is reflected in the financial reporting period in which the change in estimate becomes known. No significant revisions occurred in each of the three years ended December 31, 2016, 2015 2014 and 2013.2014. The Company’s fixed price contracts are generally recognized over a period of 12 months or less.
Cost of Revenues (Exclusive of Depreciation and Amortization) — Consists principally of salaries and bonuses of the revenue producing personnel, as well as employee benefits, stockstock-based compensation expense and non-reimbursable travel costs for these professionals.
Selling, General and Administrative Expenses — Consist mainly of compensation, benefits and travel expenses of the officers, management, sales, marketing and administrative personnel. Other operationoperating expenses includeincluded in selling, general and administrative expenses are advertising, promotional activities, legal and audit expenses, recruitment and development efforts, insurance, and operating lease expenses. In addition, the Company has issued stock to the sellers and/or personnel in connection with business acquisitions and has been recognizing stock-based compensation expense in the periods after the closing of these acquisitions as part of the selling, general and administrative expenses. Stock option expenses related to acquisitions comprised a significant portion of total selling, general and administrative stock-based compensation expense in 20142016 and 2015.
Fair Value of Financial Instruments — The Company makes assumptions about fair values of its financial assets and liabilities in accordance with the Financial Accounting Standards Board (FASB)(“FASB”) Accounting Standards Codification (ASC)(“ASC”) Topic 820, “Fair Value Measurement,” and utilizes the following fair value hierarchy in determining inputs used for valuation:
Level 1 — Quoted prices for identical assets or liabilities in active markets.
Level 2 — Inputs other than quoted prices within Level 1 that are observable either directly or indirectly, including quoted prices in markets that are not active, quoted prices in active markets for similar assets or liabilities, and observable inputs other than quoted prices such as interest rates or yield curves.
Level 3 — Unobservable inputs reflecting management’s view about the assumptions that market participants would use in pricing the asset or liability.
Where the fair values of financial assets and liabilities recorded in the consolidated balance sheets cannot be derived from an active market, they are determined using a variety of valuation techniques. These valuation techniques include a net present value technique, comparison to similar instruments with market observable inputs, optionsoption pricing models and other relevant valuation models. To the extent possible, observable market data is used as inputs into these models but when it is not feasible, a degree of judgment is required to establish fair values.
Financial Assets and Liabilities Measured At Fair Value on a Recurring Basis
The Company’s contingent liabilities measured at fair value on a recurring basis are comprised of performance-based awards issued to certain former owners of the acquired businesses in exchange for future services. Contingent liabilitiesservices and cash-settled restricted stock units issued to employees. During a performance measurement period, performance-based awards are valued using significant inputs that are not observable in the market, which are defined as Level 3 inputs according to fair value measurement accounting. The Company estimates the fair value of contingent liabilities based on certain performance milestones of the acquired businesses and estimated probabilities of achievement, then discounts the liabilities to present value using the Company’s cost of debt for the cash component of contingent consideration, and a risk free rate for the stock component of a contractual contingency. The Company believes its estimates and assumptions are reasonable, however, there is significant judgment involved. Changes in the fair value of contingent consideration liabilities primarily result from changes in the timing and amount of specific milestone estimates and changes in probability assumptions with respect to the likelihood of achieving the various earnout criteria. These changes
Cash-settled restricted stock units issued to employees are valued using the price of the Company’s stock, a significant input that is observable in the market, which is defined as Level 1 input according to fair value measurement accounting.

Changes in the fair value of these liabilities could cause a material impact to, and volatility in the Company’s operating results. See Note 1617 for contingent liabilities activity.“Fair Value Measurements.”

F-11


Employee Loans— The Company issues employee housing loans in Belarus, and relocation loans to assist employees with relocation needs in connection with intra-company transfers.transfers and loans for the purchase of automobiles in India. There are no loans issued to principal officers, directors, and their affiliates. Although permitted by authoritative guidance, we did not elect a fair value option for these financial instruments. These housing loans were measured at fair value upon initial recognition and subsequently carried at amortized cost less allowance for loan losses. Any difference between the carrying value and the fair value of a loan upon initial recognition is charged to expense. The Company intends to hold all employee loans until their maturity. Interest income is reported using the effective interest method. Where applicable, loan origination fees, net of direct origination costs, are deferred and recognized in interest income over the life of the loan.
On a quarterly basis, the Company reviews the aging of its loan portfolio and evaluates the ability of employees to repay their debt on schedule. Factors considered in the review include historical payment experience, reasons for payment delays and shortfalls, if any, as well as probability of collecting scheduled principal and interest payments. Since the initiation of the loan program there have not been material past due or non-accrual employee loans or write-offs related to loan losses and, therefore, the Company determined that no allowance for loan losses is required.
Employee Housing Loans The Employee Housing Program (the “Housing Program”) provides employees with loans to purchase housing in Belarus. The housing loans are measured using the Level 3 inputs within the fair value hierarchy because they are valued using significant unobservable inputs. These housing loans are measured at fair value upon initial recognition through the market approach under ASC Topic 820, “Fair Value Measurement” and subsequently carried at amortized cost less allowance for loan losses.losses, if any. Any difference between the carrying value and the fair value of a loan upon initial recognition is charged to expense.
Other Employee Loans Other — The Company issues short-term, non-interest bearing relocation loans to employees thatwho have relocated within the company. In addition, the Company has in the past issued and may issue in the future a small number of interest bearing loans to employees for the purchase of automobiles. Such loans are issued to qualified employees with certain conditions attached. Due to the short term duration of these employee loans and high certainty of repayment, their carrying amount is a reasonable estimate of their fair value.
Business Combinations — The Company accounts for its business combinations using the acquisition accounting method, which requires it to determine the fair value of net assets acquired and the related goodwill and other intangible assets in accordance with the FASB ASC Topic 805, “Business Combinations.” The Company identifies and attributes fair values and estimated lives to the intangible assets acquired and allocates the total cost of an acquisition to the underlying net assets based on their respective estimated fair values. Determining the fair value of assets acquired and liabilities assumed requires management’s judgment and involves the use of significant estimates, including projections of future cash inflows and outflows, discount rates, asset lives and market multiples. There are different valuation models for each component, the selection of which requires considerable judgment. These determinations will affect the amount of amortization expense recognized in future periods. The Company bases its fair value estimates on assumptions it believes are reasonable, but recognizes that the assumptions are inherently uncertain.
If initial accounting for the business combination has not been completed by the end of the reporting period in which the business combination occurs, provisional amounts are reported for which the accounting is incomplete, with retrospective adjustment made to such provisional amounts during the measurement period to present new information about facts and circumstances that existed as of the acquisition date.
All acquisition-related costs, other than the costs to issue debt or equity securities, are accounted for as expenses in the period in which they are incurred. Changes in fair value of contingent consideration arrangements that are not measurement period adjustments are recognized in earnings. Payments to settle contingent consideration, if any, are reflected in cash flows from financing activities and the changes in fair value are reflected in cash flows from operating activities in the Company’s consolidated statements of cash flows.
The acquired assets typically consist of customer relationships, trade names, non-competition agreements, and workforce and as a result, a substantial portion of the purchase price is allocated to goodwill and other intangible assets.
Cash and Cash Equivalents — Cash equivalents are short-term, highly liquid investments that are readily convertible into cash, with maturities of three months or less at the date acquired. As of December 31, 20152016 and 20142015 the Company had no cash equivalents.
Restricted Cash — Restricted cash represents cash that is restricted by agreements with third parties for special purposes and includes time deposits.or is subject to other limiting conditions. See Note 67 for items that constitute restricted cash.
Accounts Receivable — Accounts receivable are stated net of an allowance for doubtful accounts. Outstanding accounts receivable are reviewed periodically and allowances are provided at such time the management believes it is probable that such balances will not be collected within a reasonable time. The allowance for doubtful accounts is determined by evaluating the relative creditworthiness of each client, historical collections experience and other information, including the aging of the receivables. Accounts receivable are generally written off when they are deemed uncollectible. Bad debts are recorded based on historical experience and management’s evaluation of accounts receivable.

F-12


The table below summarizes movements in qualifying accounts for the years ended December 31, 2015, 2014 and 2013:
  
Balance at
Beginning of
Period 
 Charged to Costs and Expenses 
Deductions/
Other 
 Balance at End of Year 
Allowance for Doubtful Accounts (Billed and Unbilled):        
Fiscal Year 2013 $2,203
 $619
 $(1,022) $1,800
Fiscal Year 2014 1,800
 1,325
 (944) 2,181
Fiscal Year 2015 2,181
 1,704
 (2,156) 1,729
Property and Equipment — Property and equipment acquired in the ordinary course of the Company’s operations are stated at cost, net of accumulated depreciation. Depreciation is calculated on the straight-line basis over the estimated useful lives of the assets generally ranging from threetwo to fifty years. Leasehold improvements are amortized on a straight-line basis over the shorter of the term of the lease or the estimated useful life of the improvement. Maintenance and repairs are expensed as incurred.
Goodwill and Other Intangible Assets — Goodwill and intangible assets that have indefinite useful lives are treated consistently with FASB ASC 350, “Intangibles - Goodwill and Other.” The Company does not have any intangible assets with indefinite useful lives.
The Company assessesconducts its evaluation of goodwill for impairment annually,at the reporting unit level on an annual basis as of October 31st, and more frequently in certain circumstances.if events or circumstances indicate that the carrying value of a reporting unit exceeds its fair value. A reporting unit is a reportable segment or one level below. The Company initially performs a qualitative assessment of goodwill to test for impairment indicators. After applying the qualitative assessment, if the entity concludes that it is not more likely than not that the fair value of goodwill is less than the carrying amount; the two-step goodwill impairment test is not required.
If the Company determines that it is more likely than not that the carrying amount exceeds the fair value, the Company performs a quantitative impairment test. If an indicator of impairment is identified, the implied fair value of the reporting unit’s goodwill is compared to its carrying amount, and the impairment loss is measured by the excess of the carrying value over the fair value. The fair values are estimated using a combination of the income approach, which incorporates the use of the discounted cash flow method, and the market approach, which incorporates the use of earnings multiples based on market data. These valuations are considered Level 3 measurements under FASB ASC Topic 820. The Company utilizes estimates to determine the fair value of the reporting units such as future cash flows, growth rates, capital requirements, effective tax rates and projected margins, among other factors. Estimates utilized in the future evaluations of goodwill for impairment could differ from estimates used in the current period calculations.
Intangible assets that have finite useful lives are amortized over their estimated useful lives on a straight-line basis. When facts and circumstances indicate potential impairment of amortizable intangible assets, the Company evaluates the recoverability of the asset’s carrying value, using estimates of future cash flows that utilize a discount rate determined by the management to be commensurate with the risk inherent in the Company’s business model over the remaining asset life. The estimates of future cash flows attributable to intangible assets require significant judgment based on the Company’s historical and anticipated results. Any impairment loss is measured by the excess of carrying value over fair value.
Effective in the fourth quarter of 2013, the Company changed the annual goodwill impairment assessment date for all of its reporting units from December 31st to October 31st, which represented a voluntary change in the annual goodwill impairment testing date. See Note 3 for disclosure regarding goodwill and intangible assets.
Impairment of Long-Lived Assets — Long-lived assets, such as property and equipment, and finite livedfinite-lived intangible assets, are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable and exceeds the asset’s fair value. When the carrying value of an asset is more than the sum of the undiscounted cash flows that are expected to result from the asset’s use and eventual disposition, it is considered to be unrecoverable.unrecoverable. Therefore, when an asset’s carrying value will not be recovered and it is more than its fair value, the Company would deem the asset to be impaired. PropertyProperty and equipment held for disposal are carried at the lower of the current carrying value or fair value less estimated costs to sell. The Company did not incur any impairment of long-lived assets for the years ended December 31, 2015, 20142016 and 2013.2015. The Company wrote off $1,149 related to the building construction in Minsk, Belarus against allowance for losses in the year ended December 31, 2014.

F-13


Income Taxes — The provision for income taxes includes federal, state, local and foreign taxes. Deferred tax assets and liabilities are recognized for the estimated future tax consequences of temporary differences between the financial statement carrying amounts and their respective tax bases. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the year in which the temporary differences are expected to be reversed. Changes to enacted tax rates would result in either increases or decreases in the provision for income taxes in the period of changes. The Company evaluates the realizability of deferred tax assets and recognizes a valuation allowance when it is more likely than not that all, or a portion of, deferred tax assets will not be realized.
The realization of deferred tax assets is primarily dependent on future earnings. Any reduction in estimated forecasted results may require that we record valuation allowances against deferred tax assets. Once a valuation allowance has been established, it will be maintained until there is sufficient positive evidence to conclude that it is more likely than not that the deferred tax assets will be realized. A pattern of sustained profitability will generally be considered as sufficient positive evidence to reverse a valuation allowance. If the allowance is reversed in a future period, the income tax provision will be correspondingly reduced. Accordingly, the increase and decrease of valuation allowances could have a significant negative or positive impact on future earnings. See Note 1011 to the consolidated financial statements for further information.

Earnings per Share (“EPS”) — Basic earnings per shareEPS is computed by dividing income available to common shareholders by the weighted-average number of shares of common stock outstanding during the period. Diluted earnings per share is computed by dividing income available to common shareholders by the weighted-average number of shares of common stock outstanding during the period increased to include the number of additional shares of common stock that would have been outstanding if the potentially dilutive securities had been issued. Potentially dilutive securities include outstanding stock options, unvested restricted stock and unvested RSUs.restricted stock units (“RSUs”). The dilutive effect of potentially dilutive securities is reflected in diluted earnings per share by application of the treasury stock method.
Stock-Based Compensation — The Company recognizes the cost of its share-basedstock-based incentive awards based on the fair value of the award at the date of grant net of estimated forfeitures. TheStock-based compensation cost is expensed evenlyrecognized as expense on a straight-line basis over the requisite service period. The service period is the period over which the employee performs the related services, which is normally the same as the vesting period. Over time, the forfeiture assumption is adjusted to the actual forfeiture rate and such change may affect the timing of the total amount of expense recognized over the vesting period. Equity-based awards that do not require future service are expensed immediately. Equity-based awards that do not meet the criteria for equity classification are recorded as liabilities and adjusted to fair value at the end of each reporting period.
Off-Balance Sheet Financial Instruments — The Company uses the FASB ASC Topic 825, “Financial Instruments.” to identify and disclose off-balance sheet financial instruments, which include credit instruments, such as commitments to make employee loans and related guarantees, standby letters of credit and certain guarantees issued under customer contracts. The face amount for these items represents the exposure to loss, before considering available collateral or the borrower’s ability to repay. Loss contingencies arising from off-balance sheet financial instruments are recorded as liabilities when the likelihood of loss is probable and an amount or range of loss can be reasonably estimated. The Company does not believe such matters existsexist that willwould have a material effect on the financial statements.
Foreign Currency Translation — Assets and liabilities of consolidated foreign subsidiaries, whose functional currency is the local currency, are translated to U.S. dollars at period end exchange rates. Revenues and expenses are translated to U.S. dollars at daily exchange rates. The adjustment resulting from translating the financial statements of such foreign subsidiaries to U.S. dollars is reflected as a cumulative translation adjustment and reported as a component of accumulated other comprehensive income.
The Company reports the effect of exchange rate changes on cash balances held in foreign currencies as a separate item in the reconciliation of the changes in cash and cash equivalents during the period. Transaction gains and losses are included in the period in which they occur.
Risks and Uncertainties — As a result of its global operations, the Company may be subject to certain inherent risks. 
Concentration of Credit — Financial instruments that potentially subject the Company to significant concentrations of credit risk consist primarily of employee loans receivable, cash and cash equivalents, trade accounts receivable and unbilled revenues. The Company maintains cash and cash equivalents and short-term investmentsdeposits with financial institutions. The Company determined that the Company’s credit policies reflect normal industry terms and business risk and there is no expectation of non-performance by the counterparties. As of December 31, 2015, $103.72016, $194.6 million of total cash, including time deposits and restricted cash, was held in CIS countries, with $79.5$153.8 million of that total in Belarus. Banking and other financial systems in the CIS region are less developed and regulated than in some more developed markets, and bank deposits made by corporate entities in the CIS region are not insured.

F-14


Changes in the market behavior or decisions of the Company’s clients could adversely affect the Company’s results of operations. During the years ended December 31, 2016, 2015 2014 and 2013,2014, revenues from our top five customers were $327,092, $298,063 $239,396 and $169,987,$239,396, respectively, representing 32.6%28.2%, 32.8%32.6% and 30.6%32.8%, respectively, of total revenues in the corresponding periods. Revenues from our top ten customers were $442,253, $400,250 and $320,126 in 2016, 2015 and $234,955 in 2015, 2014, and 2013, respectively, representing 43.8%38.1%, 43.9%43.8% and 42.3%43.9%, respectively, of total revenues in corresponding periods.
Foreign currency risk — The Company’s global operations are conducted predominantly in U.S. dollars. Other than U.S. dollars, the Company generates a significant portion of revenues in various global markets based on client contracts obtained in non-U.S. dollar,currencies, principally, euros, British pounds sterling, Canadian dollars, Swiss francs and Russian rubles. We incurrubles and incurs expenditures in non-U.S. dollar currencies, principally in Hungarian forints, euros, Russian rubles, Polish zlotys, Mexican pesos, Hong Kong dollarsSwiss francs, British pounds sterling, Indian rupees and China yuan renminbi (“CNY”) associated with ourits delivery centers locatedcenters.
The Company’s international operations expose it to foreign currency exchange rate changes that could impact translations of foreign denominated assets and liabilities into U.S. dollars and future earnings and cash flows from transactions denominated in the CEE, Europe, Mexico and APAC regions.different currencies. The Company is exposed to fluctuations in foreign currency exchange rates primarily onrelated to accounts receivable and unbilled revenues from sales in these foreign currencies and cash flowsoutflows for expenditures in foreign currencies. The Company’s results of operations, primarily revenues and expenses denominated in foreign currencies, can be affected if any of the currencies, which we use materially in our business, appreciate or depreciate against the U.S. dollar.

Interest rate risk — The Company’s exposure to market risk is influenced primarily by changes in interest rates on interest payments received on cash and cash equivalent deposits and paid on any outstanding balance on the Company’s revolving line of credit, which is subject to a variety of rates depending on the type and timing of funds borrowed (see Note(Note 1213). The Company does not use derivative financial instruments to hedge the risk of interest rate volatility.
Recent
2.RECENT ACCOUNTING PRONOUNCEMENTS
Adoption of New Accounting PronouncementsStandards
In November 2015,Unless otherwise discussed below, the FASB issuedadoption of new accounting standards did not have an impact on the Company’s consolidated financial position, results of operations, and cash flows.
Balance Sheet Classification of Deferred Taxes — Effective April 1, 2016, the Company adopted Accounting StandardsStandard Update (“ASU”) No. 2015-17, Income Taxes (Topic 740): Balance Sheet Classification of Deferred Taxes. The amendmentsTaxes, which resulted in this update require thatthe reclassification of current deferred tax assets and current deferred tax liabilities to non-current deferred tax assets and assets be classified as noncurrent in a classified statement of financial position to simplify disclosure. The current requirement thatnon-current deferred tax liabilities and assets of a tax-paying component of an entity be offset and presented as a single amount is not affected by the amendments in this update. The amendment is effective for fiscal years, and interimon its condensed consolidated balance sheets. No prior periods within those fiscal years, beginning after December 15, 2016. The implementation of this standard is not expected to have a material effect on the Company’s consolidated financial statements.were retrospectively adjusted. See Note 11.
In September 2015, the FASB issued ASU 2015-16, Business Combinations (Topic 805): Simplifying the Accounting for Measurement-Period Adjustments.Adjustments — Effective January 1, 2016, the Company adopted the amended guidance of Accounting Standards Codification (“ASC”) Topic 805, Business Combinations, which simplifies the accounting for adjustments made to provisional amounts recognized in a business combination. The amendments in this update require thatamended guidance requires an acquirer to recognize adjustments to provisional amounts that are identified during the measurement period in the reporting period in which the adjustment amounts are determined. The update eliminates the current requirement to retrospectively adjust provisional amounts recognized at the acquisition date. The amendment is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2015. The implementationadoption of this standard isamended guidance did not expected to have a material effectsignificant impact on the Company’s consolidated financial statements.results.
Presentation of Debt Issuance CostsIn April 2015, the FASB issued ASU 2015-03, Interest-Imputation of Interest (Subtopic 835-30): Simplifying the Presentation of Debt Issuance Costs. The update guides presentation of debt issuance costs andCosts. ASU 2015-03 requires that debt issuance costs related to a recognized debt liability be presented inon the balance sheet as a direct deduction from the carrying amount of that debt liability, consistent with debt discounts. The recognition and measurement guidance forPreviously, debt issuance costs are not affected by this ASU. The amendment is effective for fiscal years,were recognized as deferred charges and interim periods within those fiscal years, beginning after December 15, 2015. The implementation of this standard is not expected to have a material effect on the Company’s consolidated financial statements.
recorded as other assets. In November 2014,August 2015, the FASB issued ASU 2014-17, Business Combinations (Topic 805)2015-15, Interest-Imputation of Interest (Subtopic 835-30): Pushdown Accounting. The update providesPresentation and Subsequent Measurement of Debt Issuance Costs Associated with Line-of-Credit Arrangements. ASU 2015-15 allows an acquired entity withto defer and present debt issuance costs as an option to apply pushdown accounting in its separate financial statements upon occurrence of an event in which an acquirer obtains controlasset and subsequently amortize the deferred debt issuance costs ratably over the term of the acquired entity. An acquired entity may also electline-of-credit arrangement, regardless of whether there are any outstanding borrowings on the optionline-of-credit arrangement. The guidance was effective January 1, 2016. The Company early adopted the standards effective December 31, 2015 and elected to apply pushdowncontinue to classify debt issuance costs associated with its revolving line of credit in other assets. Although the impact of applying these standards to its existing revolving facility has been immaterial, the standards could have a significant impact on the accounting infor future borrowings.
Pending Accounting Standards
From time to time, new accounting pronouncements are issued by the reporting period in whichFASB or other standards-setting bodies that the change-in-control event occurs. However, ifCompany will adopt according to the financial statements forvarious timetables the period in whichFASB specifies. Unless otherwise discussed below, the most recent change-in-control event occurred already have beenCompany believes the impact of recently issued or made available to be issued, the application of this guidance would be a change in accounting principle. The amendment isstandards that are not yet effective on November 18, 2014. The implementation of this standard didwill not have a material effectimpact on the Company’sits consolidated financial statements.position, results of operations and cash flows upon adoption.
In November 2014, the FASB issued ASU 2014-16, Derivatives and Hedging (Topic 815): Determining Whether the Host Contract in a Hybrid Financial Instrument Issued in the Form of a Share Is More Akin to Debt or to Equity. The update aims to eliminate the use of different methods in practice and thereby reduce existing diversity under GAAP in the accounting for hybrid financial instruments issued in the form of a share. The amendments are effective for annual period and interim periods within those annual periods, beginning after December 15, 2015 with early adoption permitted. The implementation of this standard is not expected to have a material effect on the Company’s consolidated financial statements asStock-Based Compensation — Effective January 1, 2017, the Company currently does not issue hybrid instruments.

F-15


In August 2014,will be required to adopt the FASB issued ASU 2014-15, Presentation of Financial Statements-Going Concern (Subtopic 205-40): Disclosure of Uncertainties about an Entity’s Ability to Continue as a Going Concern. Thevarious amendments in this update provide guidance about management’s responsibility to evaluate whether there is substantial doubt about an entity’s ability to continue as a going concern and to provide related footnote disclosures. These amendments aim to reduce diversity in the timing and content of footnote disclosures. The amendments in this update are effective for the annual period ending after December 15, 2016, and for annual periods and interim periods thereafter, with early adoption permitted. The implementation of this standard is not expected to have a material effect on the Company’s consolidated financial statements.
In June 2014, the FASB issued ASU 2014-12, 2016-09, Compensation - Stock Compensation (Topic 718), which requires that: Improvements to Employee Share-Based Payment Accounting. The provisions of the new guidance affecting the Company require excess tax benefits and tax deficiencies to be recorded in the income statement when the awards vest or are settled; remove the requirement to include hypothetical excess tax benefits in the application of the treasury stock method when computing earnings per share; and provided for a performance target that affects vesting and that could be achieved afternew policy election to either: (1) continue applying forfeiture rate estimates in the requisite service period be treateddetermination of compensation cost, or (2) account for forfeitures as a performance condition. A reporting entity should apply existingreduction of share-based compensation cost as they occur. The new guidance also requires cash flows related to excess tax benefits to be classified as an operating activity in Topic 718, Compensation - Stock Compensation,the cash flow statement and now requires shares withheld for tax withholding purposes to be classified as it relates to awards with performance conditions that affect vesting to account for such awards. The standarda financing activity.

While the Company is effective for annual periods and interim periods within those annual periods beginning after December 15, 2015 with earlystill evaluating the impact of adoption permitted. Entities may apply the amendments in this ASU either: (a) prospectively to all awards granted or modified after the effective date; or (b) retrospectively to all awards with performance targets that are outstanding as of the beginning ofnew guidance, it believes the earliest annual period presentednew standard will cause volatility in its effective tax rates as well as basic and diluted earnings per share due to the financial statements andtax effects related to all new or modified awards thereafter.share-based payments being recorded to the income statement (rather than equity.) The implementation of this standard is not expected to have a material effectvolatility in future periods will depend on the Company’s consolidatedstock price at the awards’ vesting dates, geographical mix and tax rates in applicable jurisdictions, as well as the number of awards that vest in each period. The Company will adopt provisions related to recognition of excess tax benefits and tax deficiencies in income on a prospective basis and is in the process of evaluating transition alternatives for various other provisions of the new guidance. The Company will not change its accounting policy and will continue to estimate forfeitures in the determination of its compensation cost. In addition, cash flows related to excess tax benefits will be included in cash provided by operating activities and will no longer be separately classified as a financing activity. Further, consistent with historical presentation, the Company will continue to classify shares withheld for tax withholding purposes as a financing activity.
Simplifying the Measurement for Goodwill — Effective January 1, 2017, the Company will early adopt the new accounting guidance simplifying the accounting for goodwill impairment. The guidance removes Step 2 of the goodwill impairment test, which requires a hypothetical purchase price allocation. A goodwill impairment will now be the amount by which a reporting unit’s carrying value exceeds its fair value, not to exceed the carrying amount of goodwill. The new guidance will be applied prospectively. The Company does not expect the adoption of this amended guidance to have an impact on its financial statements.results.
Revenue RecognitionIn May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers (Topic 606), which impacts virtually all aspects. The core principle of an entity’s revenue recognition. The ASU introduces a new five-step revenue recognition model in which2014-09 is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. This ASU also2014-09 will replace most existing revenue recognition guidance in GAAP and permits the use of either the retrospective or modified retrospective transition method. The update requires disclosures sufficient to enable users to understandsignificant additional disclosure about the nature, amount, timing and uncertainty of revenue and cash flows arising from customer contracts, with customers, including qualitative and quantitative disclosures about contracts with customers, significant judgments and changes in judgments, and assets recognizedjudgments. ASU 2014-09, as amended by ASU 2015-14, Revenue from Contracts with Customers (Topic 606): Deferral of the costs to obtain or fulfill a contract. This standard will beEffective Date, is effective for the Company beginning in its first quarter of 2017. In July 2015, the FASB deferred the effective date until the annual reporting periods (including interim reporting periods within those periods)years beginning after December 15, 2017.2017, including interim periods, with early adoption permitted for years beginning after December 15, 2016. Since the issuance of ASU 2014-09, the FASB has issued additional interpretive guidance, including new accounting standards updates, that clarify certain points of the standard and modify certain requirements.
The Company has performed a review of the requirements of the new revenue standard and is monitoring the activity of the FASB and the transition resource group as it relates to specific interpretive guidance. It is reviewing customer contracts and is in the process of applying the five-step model of the new standard to each contract category it has identified and will compare the results to its current accounting practices. The Company plans to adopt ASU 2014-09, as well as other clarifications and technical guidance issued by the FASB related to this new revenue standard, on January 1, 2018.
The Company expects the new standard could change the amount and timing of revenue and costs under certain arrangement types. The Company is currently evaluatingalso assessing pricing provisions contained in certain of its customer contracts. Pricing provisions contained in some of its customer contracts represent variable consideration or may provide the impact thiscustomer with a material right, potentially resulting in a different allocation of the transaction price than under current guidance. Due to the complexity of certain of the Company’s contracts, the actual revenue recognition treatment required under the new standard for these arrangements may be dependent on contract-specific terms and may vary in some instances. The Company has not yet determined what impact the new guidance will have on its consolidated financial statements.statements and/or related disclosures or concluded on the transition method. The Company expects to further its assessment of the financial impact of the new guidance on its consolidated financial statements in 2017.
In April 2014,
Leases — Effective January 1, 2019, the FASB issued ASU 2014-08, Reporting Discontinued Operations and DisclosuresCompany will be required to adopt the new guidance of Disposals of Components of an Entity, which changes the criteria for determining which disposals can be presented as discontinued operations and modifies the related disclosure requirements. To qualify as a discontinued operation the standard requires a disposal to represent a strategic shift that has, or will have, a major effect on an entity’s operations and financial results. The standard also expands the disclosures for discontinued operations and requires new disclosures related to individually material dispositions that do not qualify as discontinued operations. The standard is effective prospectively for fiscal periods beginning after December 15, 2014, including interim periods within that reporting period, ASC Topic 842, Leases (with early adoption permitted. The implementationpermitted effective January 1, 2018.) This amendment supersedes previous accounting guidance (Topic 840) and requires all leases, with the exception of this standard did not haveleases with a material impactterm of twelve months or less, to be recorded on the Company’sbalance sheet as lease assets and lease liabilities. The standard requires lessees and lessors to recognize and measure leases at the beginning of the earliest period presented using a modified retrospective approach. The modified retrospective approach includes a number of optional practical expedients that entities may elect to apply. These practical expedients relate to the identification and classification of leases that commenced before the effective date, initial direct costs for leases that commenced before the effective date, and the ability to use hindsight in evaluating lessee options to extend or terminate a lease or to purchase the underlying asset. An entity that elects to apply the practical expedients will, in effect, continue to account for leases that commence before the effective date in accordance with previous GAAP unless the lease is modified, except that lessees are required to recognize a right-of-use asset and a lease liability for all operating leases at each reporting date based on the present value of the remaining minimum rental payments that were tracked and disclosed under previous GAAP. The transition guidance in Topic 842 also provides specific guidance for the amounts previously recognized in accordance with the business combinations guidance for leases. The Company has not yet completed its assessment of the impact of the new guidance on its consolidated financial statements.statements, when it will adopt the standard, or concluded on whether it will elect to apply practical expedients.
Measurement of Credit Losses on Financial Instruments — Effective January 1, 2020, the Company will be required to adopt the amended guidance of ASC Topic 326, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial instruments, (with early adoption permitted effective January 1, 2019.) The amendments in this update change how companies measure and recognize credit impairment for many financial assets. The new expected credit loss model will require companies to immediately recognize an estimate of credit losses expected to occur over the remaining life of the financial assets (including trade receivables) that are in the scope of the update. The update also made amendments to the current impairment model for held-to-maturity and available-for-sale debt securities and certain guarantees. Entities are required to adopt the standard using a modified-retrospective approach through a cumulative effect adjustment to retained earnings as of the beginning of the period of adoption. The Company has not yet completed its assessment of the impact of the new guidance on its consolidated financial statements or concluded on when it will adopt the standard.
Tax Accounting for Intra-Entity Asset Transfers — Effective January 1, 2018, with early adoption permitted, the Company will be required to adopt the accounting guidance ASU 2016-16, Accounting for Income taxes: Inter-Entity Asset Transfers of Assets Other than Inventory, that will require the tax effects of intra-entity asset transfers to be recognized in the period when the transfer occurs. Under current guidance, the tax effects of intra-entity sales of assets are deferred until the transferred asset is sold to a third party or otherwise recovered through use. The new guidance does not apply to intra-entity transfers of inventory and is required to be applied on a modified retrospective basis through a cumulative effect adjustment to retained earnings as of the beginning of the period of adoption. The Company has not yet completed its assessment of the impact of the new guidance on its consolidated financial statements or concluded on when it will adopt the standard.
2.3.ACQUISITIONS
Acquisitions completed during the year ended December 31, 2015 and December 31, 2014 allowed the CompanyThe Company’s acquisitions allow it to expand into desirable geographic locations, complement theits existing vertical markets, increase revenue and create new offerings of services currently provided. The Company used the acquisition method of accounting to record these business combinations.service offerings. Acquisitions were settled in cash and/or stock where a portion of the settlement price may have been deferred. For some transactions, purchase agreements contain contingent consideration in the form of an earnout obligation.
2015 AcquisitionAcquisitions
NavigationArts — On July 10, 2015, the Company acquired all of the outstanding equity of NavigationArts, Inc. and its subsidiary, NavigationArts, LLC (collectively “NavigationArts”). The U.S.-based NavigationArts providesprovided digital consulting, architecture and content solutions and iswas regarded as a leading user-experience agency. The acquisition of NavigationArts added approximately 90 design consultants to the Company’s headcount. In connection with the NavigationArts acquisition the Company paid $28,747 as cash consideration, of which $2,670 was placed in escrow for a period of 18 months as security for the indemnification obligations of the sellers under the terms of the stock purchase agreement. In the first quarter of 2016, the Company decided to make a 338(h)(10) election to treat the NavigationArts acquisition as an asset purchase for tax purposes. As a result, during the second quarter of 2016 the Company paid an additional $1,797 to the sellers of NavigationArts, as provided for in the stock purchase agreement. The acquired goodwill that is deductible for tax purposes was $23,794 as of the date of the acquisition.

AGS — On November 16, 2015, the Company acquired all of the outstanding equity of Alliance Consulting Global Holdings, Inc including its wholly-owned direct and indirect subsidiaries Alliance Global Services, Inc., Alliance Global Services, LLC, companies organized under the laws of USA,the U.S., and Alliance Global Services IT India, a company organized under the laws of India (collectively, “AGS”). AGS providesprovided software product development services and test automation solutions and hashad multiple locations in the United States and India. The acquisition of AGS added 1,151 IT professionals to the

F-16


Company’s headcount in the United States and India. In connection with the AGS acquisition the Company paid $51,254$51,717 as cash consideration, of which $5,000 was placed in escrow for a period of 15 months as security for the indemnification obligations of the sellers under the terms of the stock purchase agreement. The Company also agreed to make a true-up payment in the amount of $603, that is recognized in the form of deferred consideration.

F-17


The following is a summary of the estimated fair values of the net assets acquired at the date of each respective acquisition as originally reported during the year ended December 31, 2015 as originally reported in the quarterly condensed consolidated financial statements and at December 31, 2015:2016:
NavigationArts AGSTotal NavigationArts AGS Total
As Originally Reported At December 31, 2015 At December 31, 2015 As Originally Reported At December 31, 2015 
As
Originally Reported
 Final as of September 30, 2016 
As
Originally Reported
 Final as of December 31, 2016 
As
Originally Reported
 Final as of  
 December 31, 
 2016
Cash and cash equivalents$1,317
 $1,317
 $1,727
 $3,044
 $3,044
 $1,317
 $1,317
 $1,727
 $1,727
 $3,044
 $3,044
Trade receivables and other current assets3,920
 3,920
 10,600
 14,520
 14,520
Accounts receivable and other current assets 3,920
 3,920
 10,600
 9,934
 14,520
 13,854
Property and equipment and other long-term assets230
 230
 1,665
 1,895
 1,895
 230
 230
 1,665
 1,600
 1,895
 1,830
Deferred tax asset
 233
 4,996
 4,996
 5,229
Deferred tax assets 
 
 4,996
 5,722
 4,996
 5,722
Acquired intangible assets1,500
 2,800
 10,000
 11,500
 12,800
 1,500
 2,800
 10,000
 22,700
 11,500
 25,500
Goodwill23,822
 21,764
 33,815
 57,637
 55,579
 23,822
 23,794
 33,815
 24,454
 57,637
 48,248
Total assets acquired30,789
 30,264
 62,803
 93,592
 93,067
 30,789
 32,061
 62,803
 66,137
 93,592
 98,198
Accounts payable and accrued expenses871
 871
 3,087
 3,958
 3,958
 871
 871
 3,087
 2,760
 3,958
 3,631
Bank loans and other long-term liabilities 
 
 
 295
 
 295
Deferred revenue50
 50
 1,049
 1,099
 1,099
 50
 50
 1,049
 1,049
 1,099
 1,099
Due to employees596
 596
 3,010
 3,606
 3,606
 596
 596
 3,010
 2,342
 3,606
 2,938
Deferred tax liability525
 
 3,800
 4,325
 3,800
Deferred tax liabilities 525
 
 3,800
 7,974
 4,325
 7,974
Total liabilities assumed2,042
 1,517
 10,946
 12,988
 12,463
 2,042
 1,517
 10,946
 14,420
 12,988
 15,937
Net assets acquired$28,747
 $28,747
 $51,857
 $80,604
 $80,604
 $28,747
 $30,544
 $51,857
 $51,717
 $80,604
 $82,261

The above estimated fair values of the assets acquired and liabilities assumed are provisional and based on the information that was available as of the acquisition date and updated for any changes asAs of December 31, 2015. During2016, and during the three months ended onperiod since the date of each respective acquisition up through December 31, 20152016, or the date purchase accounting was finalized, as applicable, the Company received a preliminary independentmade updates to the initially reported acquired balances and has finalized the valuation of the balances of NavigationArts and AGS. For NavigationArts, finalization of the purchase price allocation included adjustments to intangible assets to reflect the results of a final valuation report as well as certain adjustments made to goodwill and deferred tax liabilities as a result of the 338(h)(10) election to treat the NavigationArts that resulted inacquisition as an asset purchase for tax purposes, increasing net assets acquired by $1,797. For AGS the Company made adjustments to goodwill, intangible assets, deferred taxes and deferred tax asset and liability with no changeworking capital, resulting in a decrease of $140 to the net assets acquired.acquired, as well as reclassified certain liabilities out of accrued expenses into a separate category.
The Company is gathering additional information necessary to finalize the estimated fair valuesadjustments identified above did not significantly impact our previously reported net income of net assets acquired during 2015. The fair values reflected are subject to changeprior periods and, as such, changes could be significant. The Company expects to finalize the valuation and complete the purchase price allocation as soon as practicable but no later than one year from the respective acquisition dates.prior period amounts have not been retrospectively adjusted.
The following table presents the estimated fair values and useful lives of intangible assets acquired during the year ended December 31, 2015:
NavigationArts AGSNavigationArts AGS
Weighted Average Useful Life (in years) Amount Weighted Average Useful Life (in years) AmountWeighted Average Useful Life (in years) Amount Weighted Average Useful Life (in years) Amount
Customer relationships10 $2,800
 10 $10,000
10 $2,800
 10 $22,700
Total  $2,800
   $10,000
 $2,800
 $22,700

F-18


2014 Acquisitions
The following table discloses details of purchase price consideration of each of the 2014 acquisitions:
Name of Acquisition Effective Date of Acquisition Common Shares 
Fair Value of Common
Shares
 Cash, Net of Working Capital and Other Adjustments 
Recorded Earnout
Payable
 Total Recorded Purchase Price Maximum Potential Earnout Payable Effective Date of Acquisition Common Shares 
Fair Value of Common
Shares
 Cash, Net of Working Capital and Other Adjustments 
Recorded Earnout
Payable
 Total Recorded Purchase Price Maximum Potential Earnout Payable
 Issued Deferred Issued Deferred Paid Deferred Cash Stock   Issued Deferred Issued Deferred Paid Deferred Cash Stock 
 (in shares) (in thousands) (in shares) (in thousands)
Netsoft March 5, 2014 
 
 $
 $
 $2,403
 $1,022
 $1,825
 $
 $5,250
 $1,825
 March 5, 2014 
 
 $
 $
 $2,403
 $1,022
 $1,825
 $
 $5,250
 $1,825
Jointech April 30, 2014 
 89,552
 
 2,788
 10,000
 4,000
 15,000
 5,000
 36,788
 20,000
 April 30, 2014 
 89,552
 
 2,788
 10,000
 4,000
 15,000
 5,000
 36,788
 20,000
GGA June 6, 2014 
 
 
 
 14,892
 
 11,400
 
 26,292
  
GGA* June 6, 2014 
 
 
 
 14,892
 
 11,400
 
 26,292
  
Great Fridays October 31, 2014 
 
 
 
 10,777
 
 1,173
 
 11,950
 1,173
 October 31, 2014 
 
 
 
 10,777
 
 1,173
 
 11,950
 1,173
 
 89,552
 $
 $2,788
 $38,072
 $5,022
 $29,398
 $5,000
 $80,280
   
 89,552
 $
 $2,788
 $38,072
 $5,022
 $29,398
 $5,000
 $80,280
  
* Earn-out for GGA had no maximum limit. The determination period ended as of December 31, 2014.
Common shares issued in connection with acquisitions, if applicable, are valued at closing market prices as of the effective date of the applicable acquisition. The maximum potential earnout payables disclosed in the foregoing table represent the maximum amount of additional consideration that could be paid pursuant to the terms of the purchase agreement for the applicable acquisition. The amounts recorded as earnout payables, which are based upon the estimated future operating results of the acquired businesses within a seven-to twelve-monthseven-to-twelve-month period subsequent to the acquisition date, are measured at fair value as of the acquisition date and are included on that basis in the recorded purchase price consideration in the foregoing table. The Company records any subsequent changes in the fair value of the earnout obligations in its consolidated income from operations. Please see Note 1617 for discussion aroundof significant inputs and assumptions relating to the earnout obligations. All earnout obligations for these acquisitions have been settled.
Netsoft — On March 5, 2014, the Company completed an acquisition of substantially all of the assets and assumed certain specific liabilities of U.S.-based healthcare technology consulting firm Netsoft Holdings LLC and Armenia-based Ozsoft, LLC (collectively, “Netsoft”). As a result of this transaction, substantially all of the employees of Netsoft, including approximately 40 IT professionals, accepted employment with the Company. In connection with the Netsoft acquisition, the Company agreed to issue 2,289 restricted shares of Company common stock as consideration for future services to key management and employees of Netsoft (the “Netsoft Closing Shares”). The Company agreed to pay deferred consideration consisting partly of 9,154 restricted shares of Company common stock. During the three months ended March 31,first quarter of 2015, the Company issued 16,349 restricted shares of Company common stock to Netsoft for achieving certain performance targets (collectively with the Netsoft Closing Shares, the “Netsoft Employment Shares”). The Netsoft Employment Shares vest in equal annual installments over a three-year period starting from the date of acquisition. The first such installment vested during the first quarter of 2015. All unvested shares will be forfeited upon termination of services by the Company for cause or by the employee other than for good reason. The Netsoft Employment Shares had an estimated value of $1,017 at the time of grant and were recorded as stock-based compensation expense over an associated service period of three years (Note 1314). Under the terms of this agreement, allThe acquired goodwill that is deductible for tax purposes was $924 as of the Netsoft Closing Shares, as well as $256, were placed in escrow for a period of 18 months as security for the indemnification obligationsdate of the sellers underacquisition: this amount excludes additional tax deductible amounts resulting from vesting of the asset purchase agreement.employment shares.

Jointech — On April 30, 2014, the Company acquired all of the outstanding equity of Joint Technology Development Limited, a company organized under the laws of Hong Kong, including its wholly-owned subsidiaries Jointech Software (Shenzhen) Co., Ltd., a company organized under the laws of China, and Jointech Software Pte. Ltd., a company organized under the laws of Singapore (collectively, “Jointech”). Jointech provides strategic technology services to multi-national organizations in investment banking, wealth and asset management. As a result of this transaction, substantially all employees of Jointech, including approximately 216 IT professionals, accepted employment with the Company. In connection with the Jointech acquisition, the Company issued 89,552 shares of the Company common stock to a former owner of Jointech as consideration for future services on or about the six-month anniversary from the date of acquisition (the “Jointech Closing Shares”). Furthermore, during the second quarter of 2015, the Company issued 83,057 restricted shares of Company common stock to Jointech for achieving certain performance targets (collectively with the Jointech Closing Shares, the “Jointech Employment Shares”). The Jointech Employment Shares vest in equal annual installments over a three-year period starting from the date of acquisition. The first such installment vested during the second quarter of 2015.
All unvested Jointech Employment Shares will be forfeited upon termination of services for cause by the Company or other than for good reason (as applicable) by either of the two former owners of the acquired business. The aggregate fair value of the Jointech Employment Shares at the date of grant was $7,788 and will be recorded as stock-based compensation expense over an associated service period of three years (Note 1314).

F-19


Under the terms of the agreement, 15% of the total purchase price, in cash and stock, including the Jointech Employment Shares, was placed in an escrow account for a period of 18 months as security for the indemnification obligations of the sellers under the stock purchase agreement.
GGA — On June 6, 2014, the Company acquired substantially all of the assets and assumed certain specific liabilities of GGA Software Services, LLC, Institute of Theoretical Chemistry, Inc., and GGA’s Russian affiliate (collectively, “GGA”). Established in 1994, GGA develops scientific informatics applications and content databases; creates state-of-the-art algorithms and models; and delivers IT support, maintenance, and QA services to the world’s leading healthcare and life sciences companies. As a result of this transaction, substantially all employees of GGA, including approximately 329 IT professionals and 126 scientists, accepted employment with the Company. In connection with the GGA acquisition, the Company agreed to issue 262,277 shares of the Company common stock to the former owners of GGA as consideration for future services (the “GGA Closing Shares”). Furthermore, during the second quarter of 2015, the Company issued 233,753 restricted shares of Company common stock to the former owners of GGA for achieving certain performance targets (collectively with the GGA Closing Shares, the “GGA Employment Shares”). The GGA Employment Shares vest in equal annual installments over a three-year period starting from the date of acquisition. The first such installment vested during the second quarter of 2015. With respect to each former owner, all unvested shares will be forfeited upon either termination of services by the Company for cause or by the employee other than for good reason. The aggregate fair value of the GGA Employment Shares at the date of grant was $20,655 and will be recorded as stock-based expense over an associated service period of three years (Note 1314). Under the termsThe acquired goodwill that is deductible for tax purposes was $7,306 as of the agreement, 102,631date of the GGA Employment Shares were placed into an escrow account for a period of 15 months as security for the indemnification obligationsacquisition; this amount excludes additional tax deductible amounts resulting from vesting of the sellers under the asset purchase agreement.employment shares.
Great Fridays — On October 31, 2014, the Company acquired all of the outstanding equity of Great Fridays Limited and its subsidiaries with intent to expand the Company’s product and design service portfolio. Great Fridays Limited, headquartered in Manchester, UK, with offices in London, San Francisco and New York, focuses on bridging the gap between business and design. The acquisition of Great Fridays added approximately 50 creative design professionals to the Company’s headcount. In connection with the Great Fridays acquisition, the Company agreed to issue 90,864 shares of the Company common stock to the former owners of Great Fridays as consideration for future services (the “Great Fridays Closing Shares”). Furthermore, during the second quarter of 2015, subject to attainment of specified performance targets, the Company issued to the former owners of Great Fridays 10,092 shares of the Company common stock (collectively with Great Fridays Closing Shares, the “GF Employment Shares”). The GF Employment Shares vest in equal annual installments over a three-year period starting from the date of acquisition. With respect to each former owner, all unvested shares will be forfeited upon either termination of services by the Company for cause or by the employee other than for good reason. The aggregate fair value of the GF Employment Shares at the date of grant was $4,823 and will be recorded as stock-based compensation expense over an associated service period of three years (Note 1314). Under the terms of the agreement, 28,390 of the GF Employment Shares were placed into an escrow account for a period of 24 months as security for the indemnification obligations of the sellers under the asset purchase agreement.

F-20


The following is a summary of the estimated fair values of the net assets acquired at the date of each respective acquisition during the year ended December 31, 2014 as originally reported in the quarterly condensed consolidated financial statements and at December 31, 2015:
Netsoft Jointech GGA Great Fridays TotalNetsoft Jointech GGA Great Fridays Total
At Originally Reported Final as of March 31, 2015 As Originally Reported Final as of June 30, 2015 As Originally Reported Final as of June 30, 2015 As Originally Reported Final as of December 31, 2015 As Originally Reported Final as of December 31, 2015As Originally Reported Final as of March 31, 2015 As Originally Reported Final as of June 30, 2015 As Originally Reported Final as of June 30, 2015 As Originally Reported Final as of December 31, 2015 As Originally Reported Final as of December 31, 2015
Cash and cash equivalents$
 $
 $871
 $871
 $
 $
 $259
 $259
 $1,130
 $1,130
$
 $
 $871
 $871
 $
 $
 $259
 $259
 $1,130
 $1,130
Trade receivables and other current assets788
 788
 784
 784
 5,157
 5,377
 1,825
 1,825
 8,554
 8,774
788
 788
 784
 784
 5,157
 5,377
 1,825
 1,825
 8,554
 8,774
Property and equipment and other long-term assets52
 52
 338
 338
 444
 306
 262
 262
 1,096
 958
52
 52
 338
 338
 444
 306
 262
 262
 1,096
 958
Deferred tax asset351
 
 
 
 4,463
 
 
 
 4,814
 
Deferred tax assets351
 
 
 
 4,463
 
 
 
 4,814
 
Acquired intangible assets1,700
 1,700
 25,744
 15,312
 10,959
 16,000
 5,747
 200
 44,150
 33,212
1,700
 1,700
 25,744
 15,312
 10,959
 16,000
 5,747
 200
 44,150
 33,212
Goodwill2,776
 2,779
 11,033
 23,758
 6,496
 7,306
 6,947
 11,262
 27,252
 45,105
2,776
 2,779
 11,033
 23,758
 6,496
 7,306
 6,947
 11,262
 27,252
 45,105
Total assets acquired5,667
 5,319
 38,770
 41,063
 27,519
 28,989
 15,040
 13,808
 86,996
 89,179
5,667
 5,319
 38,770
 41,063
 27,519
 28,989
 15,040
 13,808
 86,996
 89,179
Accounts payable and accrued expenses69
 69
 728
 728
 2,593
 2,593
 872
 807
 4,262
 4,197
69
 69
 728
 728
 2,593
 2,593
 872
 807
 4,262
 4,197
Deferred revenue
 
 
 
 
 104
 317
 317
 317
 421

 
 
 
 
 104
 317
 317
 317
 421
Due to employees
 
 1,254
 1,254
 
 
 624
 624
 1,878
 1,878

 
 1,254
 1,254
 
 
 624
 624
 1,878
 1,878
Deferred tax liability
 
 
 2,293
 
 
 1,200
 110
 1,200
 2,403
Deferred tax liabilities
 
 
 2,293
 
 
 1,200
 110
 1,200
 2,403
Total liabilities assumed69
 69
 1,982
 4,275
 2,593
 2,697
 3,013
 1,858
 7,657
 8,899
69
 69
 1,982
 4,275
 2,593
 2,697
 3,013
 1,858
 7,657
 8,899
Net assets acquired$5,598
 $5,250
 $36,788
 $36,788
 $24,926
 $26,292
 $12,027
 $11,950
 $79,339
 $80,280
$5,598
 $5,250
 $36,788
 $36,788
 $24,926
 $26,292
 $12,027
 $11,950
 $79,339
 $80,280
As of December 31, 2015 the fair values of the assets acquired and liabilities assumed and the related purchase price allocation for the 2014 acquisitions have been finalized.
As of December 31, 2015, and during the period since the date of each respective acquisition up through December 31, 2015, or the date purchase accounting was finalized, as applicable, the Company made updates to the initially reported acquired balances and has finalized the valuation of the balances of Netsoft, Jointech, GGA and Great Fridays. For Netsoft, the deferred tax assetassets and goodwill were adjusted and decreaseddecreasing the net assets acquired by $348. For Jointech, intangible assets were adjusted to reflect the final fair value of intangible assets acquired and a deferred tax liability was established, both increasing goodwill with no change to the net assets acquired. For GGA, the final working capital adjustment was completed, deferred tax assets were netted with additional recognized deferred tax liabilities and additional accounts receivable and deferred revenue were recognized. In addition, intangible assets and property and equipment were adjusted to reflect the final fair value of the assets acquired. These adjustments resulted in an overall increase to goodwill and increased the net assets acquired by $1,366. For Great Fridays, the value of the intangible assets and associated deferred tax liabilities were reduced based on the final fair value estimates of acquired intangible assets, which increased goodwill. These adjustments resulted in a decrease in net assets acquired by $77.
The adjustments identified above did not significantly impact our previously reported net income of prior periods and, as such, prior period amounts have not been retrospectively adjusted.
The following table presents the estimated fair values and useful lives of intangible assets acquired during the year ended December 31, 2014:
 Netsoft Jointech GGA Great Fridays
 Weighted Average
Useful Life
(in years) 
 Amount  Weighted Average
Useful Life
(in years) 
 Amount  Weighted Average
Useful Life
(in years) 
 Amount  Weighted Average
Useful Life
(in years) 
 Amount 
Customer relationships10 $1,700
 10 $15,000
 10 $16,000
 3 $200
Trade names 
 2 312
  
  
Total  $1,700
   $15,312
   $16,000
   $200

F-21


As of December 31, 2015,2016, the companies acquired during 2015 and 2014 have been significantly integrated into the Company and as such, it is not possible to precisely report their individual post-acquisition results of operations. Pro forma results of operations for the acquisition transactions are not presented because the effects of the acquisitions would not have been material to the Company’s consolidated results of operations, individually or in the aggregate for the periods presented.

3.4.GOODWILL AND INTANGIBLE ASSETS — NET
Goodwill by reportable segment was as follows:
 North America Europe Russia Total
Balance as of January 1, 2014$16,438
 $2,864
 $2,966
 $22,268
Acquisition of Netsoft (Note 2)2,749
 
 
 2,749
Acquisition of Jointech (Note 2)
 17,404
 
 17,404
Acquisition of GGA (Note 2)12,115
 
 
 12,115
Acquisition of Great Fridays (Note 2)
 6,947
 
 6,947
Goodwill written-off
 
 (2,241) (2,241)
Net effect of foreign currency exchange rate changes(224) (876) (725) (1,825)
Balance as of December 31, 201431,078
 26,339
 
 57,417
Acquisition of NavigationArts (Note 2)23,822
 
 
 23,822
Acquisition of AGS (Note 2)33,815
 
 
 33,815
Netsoft purchase accounting adjustment (Note 2)30
 
 
 30
Jointech purchase accounting adjustment (Note 2)
 6,181
 
 6,181
GGA purchase accounting adjustment (Note 2)(4,807) 
 
 (4,807)
Great Fridays purchase accounting adjustment (Note 2)
 4,315
 
 4,315
NavigationArts purchase accounting adjustment (Note 2)(2,058) 
 
 (2,058)
Effect of net foreign currency exchange rate changes(416) (2,369) 
 (2,785)
Balance as of December 31, 2015$81,464
 $34,466
 $
 $115,930
 North America Europe Total
Balance as of January 1, 2015$31,078
 $26,339
 $57,417
Acquisition of NavigationArts (Note 3)23,822
 
 23,822
Acquisition of AGS (Note 3)33,815
 
 33,815
Netsoft purchase accounting adjustment (Note 3)30
 
 30
Jointech purchase accounting adjustment (Note 3)
 6,181
 6,181
GGA purchase accounting adjustment (Note 3)(4,807) 
 (4,807)
Great Fridays purchase accounting adjustment (Note 3)
 4,315
 4,315
NavigationArts purchase accounting adjustment (Note 3)(2,058) 
 (2,058)
Effect of net foreign currency exchange rate changes(416) (2,369) (2,785)
Balance as of December 31, 201581,464
 34,466
 115,930
NavigationArts purchase accounting adjustment (Note 3)2,030
 
 2,030
AGS purchase accounting adjustment (Note 3)(9,361) 
 (9,361)
Other acquisitions2,404
 177
 2,581
Other acquisitions purchase accounting adjustment395
 87
 482
Effect of net foreign currency exchange rate changes(120) (2,253) (2,373)
Balance as of December 31, 2016$76,812
 $32,477
 $109,289
Excluded from the table above isare the Russia and Other segments.
The Company performed an annual goodwill impairment test as of October 31, 2014 in accordance with ASC No. 350, “Intangibles-Goodwill and Other.” In assessing impairment both qualitatively and quantitatively based on the total of the expected future discounted cash flows directly related to the Russia reporting unit, the Company determined that the fair value of the reporting unit was below the carrying value of the reporting unit. The Company completed the second step of the goodwill impairment test, resulting in an impairment charge of $2,241 in the Russia segment. As of December 31, 2016 and 2015 the book value of the goodwill related to the Russia segment was zero. All existing assets that related to the Russia segment, excluding goodwill, were assessed by management and deemed to not be impaired.
As a result of an operating loss in the Other reporting unit for the three months ended June 30, 2011, the Company performed a goodwill impairment test. In assessing impairment in accordance with Accounting Standards Codification, (“ASC”)ASC No. 350, “Intangibles-Goodwill and Other,” the Company determined that the fair value of the Other reporting unit, based on the total of the expected future discounted cash flows directly related to the reporting unit, was below the carrying value of the reporting unit. The Company completed the second step of the goodwill impairment test, resulting in an impairment charge of $1,697 in the Other operatingreportable segment. As of December 31, 2015, 20142016, and 20132015 the book value of the goodwill related to the Other segment was zero.
The Company performed an annual goodwill impairment test as of October 31, 2014 in accordance with Accounting Standards Codification, (“ASC”) No. 350, “Intangibles-Goodwill and Other.” In assessing impairment both qualitatively and quantitatively based on the total of the expected future discounted cash flows directly related to the reporting unit, the Company determined that the fair value of the Russia reporting unit was below the carrying value of the reporting unit. The Company completed the second step of the goodwill impairment test, resulting in an impairment charge of $2,241in the Russia segment. As of December 31, 2015 and 2014 the book value of the Russia segment was zero. All existing assets that related to the Russia segment, excluding goodwill and including any unrecognized intangible assets, were assessed by management and deemed to not be impaired.
There were no accumulated impairments losses in the North America or Europe operatingreportable segments as of December 31, 2016, 2015 2014 or 2013.2014.
As part of the AGS acquisitionand NavigationArts acquisitions in 2015, substantially all of the employees of AGSthese companies continued employment. The Company believes the amount of goodwill resulting from the allocation of the purchase price to acquire AGSeach of the businesses is attributable to the workforce of the acquired business.businesses. All of the goodwill was allocated to the Company’s U.S. operations and is presented within the North America.

F-22


As part of the NavigationArts acquisition in 2015, substantially all of the employees of NavigationArts continued employment. The Company believes the amount of goodwill resulting from the allocation of purchase price to acquire NavigationArts is attributable to the workforce of the acquired business. All of the goodwill was allocated to the Company’s U.S. operations and is presented within North America.
As part of the Netsoft acquisition in 2014, substantially all of the employees of Netsoft accepted employment with the Company. The Company believes the amount of goodwill resulting from the allocation of purchase price to acquire Netsoft is attributable to the workforce of the acquired business. All of the goodwill was allocated to the Company’s U.S. operations and is presented within North America.America segment.
As part of the Jointech acquisition in 2014, substantially all of the employees of Jointech continued employment. The Company believes the amount of goodwill resulting from the allocation of purchase price to acquire Jointech is attributable to the workforce of the acquired business. Based on the determination of the reportable units, Jointech has been placed in the Europe reportable unit based on managerial responsibility and consistent with segment reporting. All of the goodwill was allocated to the Company’s UK operations and is presented within the Europe segment.

As part of the Netsoft, GGA acquisitionand Great Fridays acquisitions in 2014, substantially all of the employees of GGAthese companies accepted employment with the Company. The Company believes the amount of goodwill resulting from the allocation of purchase price to acquire GGAeach of the businesses is attributable to the workforce of the acquired business.businesses. All of the goodwill was allocated to the Company’s U.S. operations and is presented within North America.
As part ofIntangible assets other than goodwill for the Great Fridays acquisition in 2014, substantially all of the employees of Great Fridays continued employment. The Company believes the amount of goodwill resulting from the allocation of purchase price to acquire Great Fridays is attributable to the workforce of the acquired business. All of the goodwill was allocated to the Company’s U.S. operationsyears ended December 31, 2016 and is presented within North America.
 2015
 Weighted average life at acquisition (in years) Gross carrying amount Accumulated amortization 
Net 
carrying amount
Client relationships10 $52,974
 $(8,387) $44,587
Trade name5 5,853
 (3,772) 2,081
Non-competition agreements4 746
 (554) 192
Total
 $59,573
 $(12,713) $46,860
2015 were as follows:
2014As of December 31, 2016
Weighted average life at acquisition (in years) Gross carrying amount Accumulated amortization 
Net 
carrying amount
Weighted average life at acquisition (in years) Gross carrying amount Accumulated amortization 
Net 
carrying amount
Client relationships10 $48,482
 $(4,664) $43,818
Trade name5 6,372
 (2,894) 3,478
Customer relationships10 $65,409
 $(15,133) $50,276
Trade names5 5,622
 (4,661) 961
Non-competition agreements5 813
 (420) 393
4 756
 (733) 23
Total $55,667
 $(7,978) $47,689

 $71,787
 $(20,527) $51,260
 As of December 31, 2015
 Weighted average life at acquisition (in years) Gross carrying amount Accumulated amortization 
Net 
carrying amount
Customer relationships10 $52,974
 $(8,387) $44,587
Trade names5 5,853
 (3,772) 2,081
Non-competition agreements4 746
 (554) 192
Total  $59,573
 $(12,713) $46,860
All of the intangible assets have finite lives and as such are subject to amortization. Recognized amortization expense for each of the years ended December 31 is presented in the table below:
 For the Years Ended December 31, For the Years Ended December 31,
 2015 2014 2013 2016 2015 2014
Client relationships $3,961
 $3,843
 $1,373
Trade name 1,280
 1,319
 1,222
Customer relationships $6,858
 $3,961
 $3,843
Trade names 1,139
 1,280
 1,319
Non-competition agreements 175
 187
 190
 173
 175
 187
Total $5,416
 $5,349
 $2,785
 $8,170
 $5,416
 $5,349

F-23


Estimated amortization expenses ofexpense related to the Company’s existing intangible assets for the next five years ending December 31 werewas as follows:
 Amount Amount
2016 $6,633
2017 6,240
 $7,482
2018 5,292
 6,539
2019 5,292
 6,539
2020 5,292
 6,539
2021 6,539
Thereafter 18,111
 17,622
Total $46,860
 $51,260

4.5.PREPAID AND OTHER CURRENT ASSETS
Prepaid and other current assets consisted of the following:
 December 31,
2015
 December 31,
2014
 December 31,
2016
 December 31,
2015
Taxes receivable $7,954
 $3,966
 $6,054
 $7,954
Prepaid expenses 4,693
 3,703
 5,462
 4,693
Other 1,697
 1,620
Unamortized software licenses and subscriptions 1,550
 699
Security deposits under operating leases 1,323
 575
Notes receivable, net of allowance of $580 and $0, respectively 710
 
Other, net of allowance of $64 and $0, respectively 591
 423
Total $14,344
 $9,289
 $15,690
 $14,344
5.6.EMPLOYEE LOANS AND ALLOWANCE FOR LOAN LOSSES
In 2012, the Board of Directors of the Company approved the Employee Housing Program (the “Housing Program”), which provides employees with loans to purchase housing in Belarus. The housing is sold directly to employees by independent third parties. The Housing Program was designed as a retention mechanism for the Company’s employees in Belarus and is available to full-time qualified employees who have been with the Company for at least three years. The aggregate maximum lending limit of the program is $10,000, with no individual outstanding loans exceeding $50. In addition to the housing loans, the Company issues relocation loans in connection with intra-company transfers, as well as certain other individual loans.
During the year ended December 31, 2015,2016, loans issued by the Company under the Housing Program were denominated in U.S. Dollars with a 5-year term and carried an interest rate of 7.5%.
At December 31, 20152016 and December 31, 2014,2015, categories of employee loans included in the loan portfolio were as follows:
December 31,
2015
 December 31,
2014
December 31,
2016
 December 31,
2015
Housing loans$5,654
 $5,848
$5,448
 $5,654
Relocation and other loans684
 667
530
 684
Total employee loans6,338
 6,515
5,978
 6,338
Less: 
  
 
  
Allowance for loan losses
 

 
Total loans, net of allowance for loan losses$6,338
 $6,515
$5,978
 $6,338
During the years ended December 31, 20152016 and 2014,2015, the Company issued a total of $3,427$2,960 and $3,162$3,427 of loans to its employees, respectively, and received $3,547$3,273 and $3,025$3,547 in loan repayments during the same periods, respectively. One of theNo loans in the amount of $7 waswere written-off during the year ended December 31, 2015.2016. There were no loanswas one loan written-off during the year ended December 31, 2014.2015.
There were no loans issued to principal officers, directors, or their affiliates during the years ended December 31, 2016, 2015 2014 and 2013.2014.

F-24


On a quarterly basis, the Company reviews the aging of its loan portfolio and evaluates the ability of employees to repay their debt on schedule. Factors considered in the review include historical payment experience, reasons for payment delays and shortfalls, if any, as well as probability of collecting scheduled principal and interest payments. As of December 31, 20152016 and December 31, 2014,2015, there were no material past due or non-accrual employee loans. The Company determined no allowance for loan losses was required regarding its employee loans as of December 31, 20152016 and December 31, 20142015 and there were no movements in the provision for loan losses during the years ended December 31, 2016, 2015 2014 and 2013.2014.

6.7.RESTRICTED CASH AND TIME DEPOSITS
Restricted cash and time deposits consisted of the following:
December 31,
2015
 December 31,
2014
December 31,
2016
 December 31,
2015
Restricted cash, short-term$2,400
 $
Time deposits$30,181
 $
403
 30,181
Other security deposits238
 156
Other long-term security deposits239
 238
Total$30,419
 $156
$3,042
 $30,419
As of December 31, 2015 time deposits consisted of a bank deposit of $30,181, earning interest at the rate of 0.74% placed with the Company’s Cyprus entity’s bank accounts in the United KingdomKingdom. The deposit will maturematured on March 11, 2016. There were no time deposits as of December 31, 2014.
At December 31, 2015 and 2014, security deposits under lease contracts represented amounts retained to secure appropriate performance by the Company. The Company estimates the probability of non-performance under these contracts as remote, therefore, no provision for losses has been recognized in respect of these amounts as of December 31, 2015 and 2014.
Other restricted cash as of December 31, 2015 and 2014 included loan deposits placed in connection with certain employee loan programs (See Note 5).
7.8.PROPERTY AND EQUIPMENT — NET
Property and equipment consisted of the following:
 
Useful Life
(in years)
 December 31,
2015
 December 31,
2014
 
Weighted Average Useful Life
(in years)
 December 31,
2016
 December 31,
2015
Computer hardware 3 $36,612
 $32,374
 3 $49,599
 $36,612
Building 49 34,012
 34,002
Furniture and fixtures 7 13,178
 8,990
Office equipment 7 9,416
 8,307
Leasehold improvements lease term 6,801
 6,287
 4 7,944
 6,801
Furniture and fixtures 7 8,990
 7,348
Purchased computer software 3 4,099
 3,606
 5 4,601
 4,099
Office equipment 7 8,307
 5,043
Building 50 34,002
 17,123
Land improvements 20 1,464
 
 20 1,467
 1,464
Construction in progress (Note 15) n/a 
 17,885
 100,275
 89,666
 120,217
 100,275
Less accumulated depreciation and amortization (39,776) (34,532) (46,601) (39,776)
Total $60,499
 $55,134
 $73,616
 $60,499
For the leasehold improvements, the useful life is determined based on the shorter of the lease term or useful life of the underlying asset.
Depreciation and amortization expense related to property and equipment was $15,217, $11,979 $12,134 and $12,335$12,134 for the years ended December 31, 2016, 2015 2014 and 2013,2014, respectively.


F-25


8.9.ACCRUED EXPENSES AND OTHER LIABILITIES
Accrued expenses and other liabilities consisted of the following:
 December 31,
2015
 December 31,
2014
 December 31,
2016
 December 31,
2015
Compensation $47,285
 $22,766
 $33,404
 $47,285
Deferred revenue 3,319
 3,047
Subcontractor costs 4,360
 2,815
 3,317
 4,360
Professional fees 2,251
 1,162
 2,348
 2,251
Business trips 2,324
 939
Facilities costs 1,538
 757
 1,534
 1,538
Insurance costs 1,091
 810
Acquisition related deferred consideration 603
 1,022
 
 603
Deferred tax liabilities 
 365
Other 4,347
 3,681
 2,558
 2,598
Total $60,384
 $32,203
 $49,895
 $63,796

9.10.TAXES PAYABLE
Current taxes payable consisted of the following:
 December 31,
2015
 December 31,
2014
 December 31,
2016
 December 31,
2015
Corporate profit tax $15,057
 $7,982
 $4,000
 $15,057
Value added taxes 8,553
 6,279
 10,644
 8,553
Payroll, social security, and other taxes 5,862
 10,443
 10,364
 5,862
Total $29,472
 $24,704
 $25,008
 $29,472
There were no long-term taxes payable as of December 31, 20152016 and 2014.2015.
10.11.INCOME TAXES
Income before provision for income taxes included income from domestic operations and income from foreign operations based on the geographic location as disclosed in the table below:
 For the Years Ended December 31, For the Years Ended December 31,
 2015 2014 2013 2016 2015 2014
Income before income tax expense:      
Income/ (loss) before income tax expense:      
Domestic $(7,687) $(7,229) $7,001
 $(9,300) $(7,687) $(7,229)
Foreign 113,757
 94,182
 69,769
 135,766
 113,757
 94,182
Total $106,070
 $86,953
 $76,770
 $126,466
 $106,070
 $86,953
The provision for income taxes consists of the following:
 For the Years Ended December 31, For the Years Ended December 31,
 2015 2014 2013 2016 2015 2014
Income tax expense (benefit) consists of:            
Current            
Federal $19,851
 $7,741
 $6,150
 $13,324
 $19,851
 $7,741
State 2,563
 338
 310
 (63) 2,563
 338
Foreign 14,528
 12,504
 8,275
 17,243
 14,528
 12,504
Deferred            
Federal (13,361) (3,979) (668) (3,581) (13,361) (3,979)
State (1,891) (43) 14
 312
 (1,891) (43)
Foreign (76) 751
 695
 (35) (76) 751
Total $21,614
 $17,312
 $14,776
 $27,200
 $21,614
 $17,312

F-26


Deferred Income Taxes
Deferred income taxes reflect the net effects of temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts used for income tax purposes. Significant components of the Company’s deferred tax assets and liabilities are as follows:
 December 31,
2015
 December 31,
2014
 December 31,
2016
 December 31,
2015
Deferred tax assets:        
Fixed assets $681
 $181
Property and equipment $203
 $681
Intangible assets 1,428
 3,789
 1,525
 1,428
Accrued expenses 10,729
 1,282
 9,172
 10,729
Net operating loss carryforward 5,233
 844
 5,368
 5,233
Deferred revenue 2,162
 4,328
 1,165
 2,162
Stock-based compensation 12,484
 6,994
 19,701
 12,484
Valuation allowance 
 (149)
Restricted stock options 
 2
Other assets 14
 30
 17
 14
Deferred tax assets 32,731
 17,301
 37,151
 32,731
Deferred tax liabilities:        
Fixed assets 646
 800
Property and equipment

 1,735
 646
Intangible assets 1,598
 
 4,969
 1,598
Accrued revenue and expenses 511
 635
 500
 511
Deferred inter-company gain 
 405
Stock-based compensation 1,672
 7,013
 1,606
 1,672
Other liabilities 912
 24
 314
 912
Deferred tax liability 5,339
 8,877
Net deferred tax asset $27,392
 $8,424
Deferred tax liabilities 9,124
 5,339
Net deferred tax assets $28,027
 $27,392
Included in the stock-based compensation expense deferred tax asset at December 31, 2016 and 2015 is $11,471 and $7,219, respectively that is related to acquisitions and is amortized for tax purposes over a 15-year period.
We have income tax net operating loss (“NOL”) carryforwards related to several jurisdictions of $20,899. We have recorded a deferred tax asset of $5,368 reflecting the full benefit of $20,899 in loss carryforwards as we fully expect to utilize all NOLs before each country’s expiration period. 
Adoption of ASU 2015-17 resulted in the classification of current deferred tax assets and liabilities to non-current deferred tax assets and liabilities. As such the Company has no current deferred tax assets and liabilities as of December 31, 2016. As of December 31, 2016, the Company had non-current deferred tax assets and liabilities of $31,005 and $2,979, respectively. At December 31, 2015, the Company had current and non-current deferred tax assets of $11,847 and $18,312, respectively, and current and non-current deferred tax liabilities of $365 and $2,402, respectively. At December 31, 2014, the Company had currentCurrent and non-current deferred tax assets of $2,496 and $11,094, respectively, andliabilities were shown under other current and non-current taxlong-term liabilities of $603 and $4,563, respectively.on the consolidated balance sheets.
At December 31, 2015, the Company has a net operating loss in China and Singapore related to the acquisition of Jointech and a net operating loss in the US related to the acquisition of AGS. The net operating losses at Jointech will be utilized prior to its expiration and the net operating loss at AGS will be used each year until expiration. No provision has been made for U.S. or non-U.S. income taxes on the undistributed earnings of subsidiaries or for unrecognized deferred tax liabilities for temporary differences related to basis differences in investments in subsidiaries, as such earnings are expected to be permanently reinvested, the investments are essentially permanent in duration, or the Company has concluded that no additional tax liability will arise as a result of the distribution of such earnings. As of December 31, 2015,2016, certain subsidiaries had approximately $443.2$571.4 million of undistributed earnings that we intend to permanently reinvest. A liability could arise if our intention to permanently reinvest such earnings were to change and amounts are distributed by such subsidiaries or if such subsidiaries are ultimately disposed. It is not practicable to estimate the additional income taxes related to permanently reinvested earnings or the basis differences related to investments in subsidiaries.

F-27


The reconciliation of the federal statutory income tax rate to our effective income tax rate is as follows:
 For the Years Ended December 31, For the Years Ended December 31,
 2015 2014 2013 2016 2015 2014
Statutory federal tax $37,125
 $29,564
 $26,102
 $44,263
 $37,125
 $29,564
Increase/ (decrease) in taxes resulting from:            
State taxes, net of federal benefit 341
 311
 368
 1,192
 341
 311
Provision adjustment for current year uncertain tax position 
 (1,220) 
 
 
 (1,220)
Effect of permanent differences 7,314
 8,589
 2,524
 5,042
 7,314
 8,589
Stock-based compensation 7,591
 3,782
 1,948
Rate differential between U.S. and foreign (31,094) (24,772) (17,279)
Stock-based compensation expense
 9,535
 7,591
 3,782
Foreign tax expense and tax rate differential

 (33,477) (31,094) (24,772)
Change in foreign tax rate 9
 754
 (59) 
 9
 754
Change in valuation allowance 
 149
 489
 
 
 149
Other 328
 155
 683
 645
 328
 155
Provision for income taxes $21,614
 $17,312
 $14,776
 $27,200
 $21,614
 $17,312
On September 22, 2005, the president of Belarus signed the decree “On the High-Technologies Park” (the “Decree”). The Decree is aimed at boosting the country’s high-technology sector. The Decree stipulates that member technology companies have a 100% exemption from Belarusian income tax of 18% effective July 1, 2006. The Decree is in effect2006, for a period of 15 years from July 1, 2006.years. The aggregate dollar benefits derived from this tax holiday approximated $13.6 million, $20.8 million $16.8 million and $9.7$16.8 million for the years ended December 31, 2016, 2015 2014 and 2013,2014, respectively. The benefit the tax holiday had on diluted net income per share approximated $0.26, $0.40 $0.34 and $0.20$0.34 for the years ended December 31, 2016, 2015 2014 and 2013,2014, respectively.
Uncertain Tax Positions
The liability for unrecognized tax benefits is included in income tax liabilitytaxes payable within the consolidated balance sheets at December 31, 20152016 and 2014.2015. At December 31, 20152016 and 2014,2015, the total amount of gross unrecognized tax benefits (excluding the federal benefit received from state tax positions) was $66 and $62, and $200, respectively, (excluding penalties and interest of zero and $12 in 2015 and 2014). Of this total, $62 and $212, respectively, (net of the federal benefit on state tax issues) representsrespectively. These amounts represent the amount of unrecognized tax benefits that, if recognized, would favorably affect the effective tax rate in future periods.
The Company’s policy is to recognize interest and penalties related to uncertain tax positions as a component of its provision for income taxes. There was no accrued interest and penalties resulting from such unrecognized tax benefits at December 31, 2016 and December 31, 2015. The total amount of accrued interest and penalties resulting from such unrecognized tax benefits was $12 and $189 at December 31, 2014 and 2013, respectively.2014.
The beginning to ending reconciliation of the gross unrecognized tax benefits wereis as follows:
 For the Years Ended December 31, For the Years Ended December 31,
 2015 2014 2013 2016 2015 2014
Balance at January 1 $200
 $1,271
 $1,271
 $62
 $200
 $1,271
Increases in tax positions in current year 
 
 
 4
 
 
Increases in tax positions in prior year 
 
 
 
 
 
Decreases due to settlement (138) (1,071) 
 
 (138) (1,071)
Balance at December 31 $62
 $200
 $1,271
 $66
 $62
 $200
There were no tax positions for which it was reasonably possible that unrecognized tax benefits will significantly increase or decrease within 12twelve months of the reporting date.
The Company files income tax returns in the United States and in various states,state, local and foreign jurisdictions. The Company’s significant tax jurisdictions are the U.S. Federal, Pennsylvania,United States, Canada, Russia, Denmark, Germany, Ukraine, the United Kingdom, Hungary, Switzerland, and Kazakhstan. As a result of 2015 acquisitions, the Company has an additional filing responsibility in India. The tax years subsequent to 20112012 remain open to examination by the Internal Revenue Service and generally, the tax years subsequent to 20112012 remain open to examination by various state and local taxing authorities and various foreign taxing authorities.

F-28


11.12.EMPLOYEE BENEFITS
The Company offers employees a 401(k) retirement plan, which is a tax-qualified self-funded retirement plan covering substantially all of the Company’s U.S. employees. Under this plan, employees may elect to defer their current compensation up to the statutory limit defined by the Internal Revenue Service. The Company provides discretionary matching contributions to the plan of up to a maximum of 2.0% of the employee’s eligible compensation as defined by the plan. Employer contributions are subject to a two year vesting schedule. Employer contributions charged to expense for the years ended December 31, 2016, 2015 and 2014, were $1,934, $740 and $549, respectively.
The Company does not maintain any defined benefit pension plans or any nonqualified deferred compensation plans.
12.13.LONG-TERM DEBT
Revolving Line of Credit — On September 12, 2014, the Company entered into a revolving loan agreement (the “2014 Credit Facility”) with PNC Bank, National Association; Santander Bank, N.A; and Silicon Valley Bank (collectively the “Lenders”) to replace its former revolving loan agreement. The 2014 Credit Facility provides for a borrowing capacity of $100,000, with potential to increase the credit facility up to $200,000 if certain conditions are met. The 2014 Credit Facility matures on September 12, 2019.
Borrowings under the 2014 Credit Facility may be denominated in U.S. dollars or up to a maximum of $50,000 in British pounds sterling, Canadian dollars, euros or Swiss francs (or other currencies as may be approved by the lenders). Borrowings under the 2014 Credit Facility bear interest at either a base rate or Euro-rate plus a margin based on the Company’s leverage ratio. Base rate is equal to the highest of (a) the Federal Funds Open Rate, plus 0.5%, (b) the Prime Rate, andor (c) the Daily LIBOR Rate, plus 1.0%.
The 2014 Credit Facility is collateralized with: (a) all tangible and intangible assets of the Company, and its U.S.-based subsidiaries including all accounts, general intangibles, intellectual property rights and equipment; and (b) all of the outstanding shares of capital stock and other equity interests in U.S.-based subsidiaries of the Company, and 65% of the outstanding shares of capital stock and other equity interests in certain of the Company’s foreign subsidiaries. The 2014 Credit Facility includes customary business and financial covenants and restricts the Company’s ability to make or pay dividends (other than certain intercompany dividends) unless no potential or actual event of default has occurred or would be triggered. As of December 31, 2015,2016, the Company was in compliance with all covenants contained in the 2014 Credit Facility.
During the year endedAs of December 31, 2016 and 2015, the outstanding debt of the Company borrowed $35,000 denominated in U.S. dollars under the 2014 Credit Facility withwas $25,000 and $35,000 respectively, and is subject to a LIBOR-based interest rate, which resets regularly at issuance, based on a quarterly basis. Aslending terms. In addition, as of December 31, 2015,2016, the Company had outstanding debthas a $942 unused irrevocable standby letter of $35,000.credit associated with its insurance program that was issued under the 2014 Credit Facility during the year 2016.
As of December 31, 2016 and 2015, the borrowing capacity of the Company under the 2014 Credit Facility was $65,000.$74,058 and $65,000, respectively.
13.14.STOCK-BASED COMPENSATION
The following costs related to the Company’s stock compensation plans were included in the consolidated statements of income and comprehensive income:
 For the Years Ended December 31, For the Years Ended December 31,
 2015 2014 2013 2016 2015 2014
Cost of revenues $13,695
 $8,648
 $4,823
 $16,619
 $13,695
 $8,648
Selling, general and administrative expenses - Acquisition related 18,690
 8,829
 4,417
Selling, general and administrative expenses - All other 13,448
 7,143
 3,910
Selling, general and administrative expenses — Acquisition related
 12,884
 18,690
 8,829
Selling, general and administrative expenses — All other
 19,741
 13,448
 7,143
Total $45,833
 $24,620
 $13,150
 $49,244
 $45,833
 $24,620
Equity Plans
2015 Long-Term Incentive Plan— On June 11, 2015, the Company’s stockholders approved the 2015 Long-Term Incentive Plan (“2015 Plan”) to be used to issue equity grants to company personnel. As of December 31, 2015, 6,657,370 shares of common stock remained available for issuance under the 2015 Plan. In addition, up to 6,277,028 shares that are subject to outstanding awards as of December 31, 2015 under the 2012 Plan and up to 1,039,861 shares that are subject to outstanding awards as of December 31, 2015 under the 2006 Plan and that expire or terminate for any reason prior to exercise or that would otherwise have returned to the respective Plan’s share pool under the terms of the Plan, will be available for awards to be granted under the 2015 Plan.

F-29


2012 Non-Employee Directors Compensation Plan — On January 11, 2012, the Company approved the 2012 Non-Employee Directors Compensation Plan (“2012 Directors Plan”) to be used to issue equity grants to its non-employee directors. The Company authorized 600,000 shares of common stock to be reserved for issuance under the plan. As of December 31, 2015, 554,0702016, 547,560 shares of common stock remained available for issuance under the 2012 Directors Plan. The 2012 Directors Plan will expire after 10 years and is administered by the Company’s Board of Directors.

2015 Long-Term Incentive Plan— On June 11, 2015, the Company’s stockholders approved the 2015 Long-Term Incentive Plan (“2015 Plan”) to be used to issue equity awards to company personnel. As of December 31, 2016, 6,202,977 shares of common stock remained available for issuance under the 2015 Plan. All of the awards issued pursuant to the 2015 Plan expire 10 years from the date of grant.
2012 Long-Term Incentive Plan — On January 11, 2012, the Company approved the 2012 Long-Term Incentive Plan (“2012 Plan”) to be used to issue equity grants to company personnel. In June 2015, the 2012 Plan was discontinued; however, outstanding awards remain subject to the terms of the 2012 Plan and any shares that are subject to an award that was previously granted under the 2012 or 2006 Plan and that expire or terminate for any reason prior to exercise will become available for issuance under the 2015 Plan. All of the optionsawards issued pursuant to the 2012 Plan expire 10 years from the date of grant.
2006 Stock Option Plan — Effective May 31, 2006, the Board of Directors of the Company adopted the 2006 Stock Option Plan (the “2006 Plan”). The 2006 Plan permitted the granting of to grant stock options to directors, employees, and certain independent contractors. In January 2012, the 2006 Plan was discontinued; however, outstanding awards remain subject to the terms of the 2006 Plan and any shares that are subject to an option award that was previously granted under the 2006 Plan and that expire or terminate for any reason prior to exercise will become available for issuance under the 2015 Plan. All of the optionsawards issued pursuant to the 2006 Plan expire 10 years from the date of grant. All the outstanding shares under 2006 Plan will expire in January 2016.
Stock Options
Stock option activity under the Company’s plans is set forth below:
Number of
Options 
 
Weighted Average
Exercise Price 
 
Aggregate
Intrinsic Value 
Number of
Options 
 
Weighted Average
Exercise Price 
 
Aggregate
Intrinsic Value 
Options outstanding at January 1, 20136,296,709
 $7.51
 $66,682
Options granted1,987,952
 23.60
 22,543
Options exercised(2,156,898) 4.31
 (66,066)
Options forfeited/cancelled(304,227) 11.50
 (7,131)
Options outstanding at December 31, 20135,823,536
 $13.99
 $122,003
Options outstanding at January 1, 20145,823,536
 $13.99
 $122,003
Options granted2,400,500
 32.51
 36,584
2,400,500
 32.51
 36,584
Options exercised(1,171,097) 9.05
 (45,321)(1,171,097) 9.05
 (45,321)
Options forfeited/cancelled(214,193) 25.33
 (4,802)(214,193) 25.33
 (4,802)
Options outstanding at December 31, 20146,838,746
 $20.98
 $183,073
6,838,746
 $20.98
 $183,073
Options granted2,219,725
 62.18
 36,492
2,219,725
 62.18
 36,492
Options exercised(1,405,826) 14.70
 (89,860)(1,405,826) 14.70
 (89,860)
Options forfeited/cancelled(201,731) 34.48
 (8,904)(201,731) 34.48
 (8,904)
Options outstanding at December 31, 20157,450,914
 $34.07
 $331,938
7,450,914
 $34.07
 $331,938
Options granted313,088
 70.27
 (1,866)
Options exercised(895,804) 20.13
 (39,577)
Options forfeited/cancelled(227,759) 47.89
 (3,740)
Options expired(3,200) 1.52
 (201)
Options outstanding at December 31, 20166,637,239
 $37.20
 $179,936
          
Options vested and exercisable at December 31, 20152,446,226
 $15.95
 $153,305
Options vested and exercisable at December 31, 20163,350,682
 $25.96
 $128,499
Options expected to vest4,690,899
 $42.51
 $169,388
3,127,635
 $48.28
 $50,136
The fair value of each option award is estimated on the date of grant using the Black-Scholes option valuation model. The Company recognizes the fair value of each option as compensation expense ratably using the straight-line method over the service period (generally the vesting period). The Black-Scholes model incorporates the following assumptions:
a. Expected volatility — the Company estimated the volatility of its common stock at the date of grant using historical volatility of peer public companies for the year ended December 31, 2011. In order to compare volatilities for different interval lengths, the Company expresses volatility in annual terms.companies. During 2014, the Company began including the historical volatility for the Company in conjunction with peer public companies to formulate the estimated volatility regarding the stock options issued in 2015 and 2014.options. The expected volatility was 31.9%, 34.1% in the year ended December 31, 2015, and 45.9% in the years ended December 31, 2016, 2015 and 2014, and 2013.respectively.

F-30


b. Expected term — the Company estimates the expected term of options granted using the simplified method of determining expected term as outlined in SEC Staff Accounting Bulletin 107 as the Company does not have sufficient history in order to develop a more precise estimate. The expected term was 6.24 years in 2016, 6.25 years in 2015, and 6.20 years in 2014, and 6.24 years in 2013.2014.

c. Risk-free interest rate — the Company estimates the risk-free interest rate using the U.S. Treasury yield curve for periods equal to the expected term of the options in effect at the time of grant. The risk-free rate was approximately 1.8%1.5%, 1.8% and 2.0% in 2016, 2015 and 1.4% in 2015, 2014, and 2013, respectively.
d. Dividends — the Company uses an expected dividend yield of zero since it has never declared or paid any dividends on its common stock. The Company intends to retain any earnings to fund future growth and the operation of its business and, therefore, does not anticipate paying any cash dividends in the foreseeable future.
Additionally, the Company determines an annual forfeiture rate and records share-based compensation expense only for those awards that are expected to vest. The Company applies an estimated forfeiture rate at the time of grant and adjusts those estimated forfeitures to reflect actual forfeitures at least annually.
Aggregate grant-date fair value of stock options issued during the year ended December 31, 20152016 was $47,973.$6,874. The options are typically scheduled to vest over four years from the time of grant, subject to the terms of the applicable plan and stock option agreement. In general, in the event of the participant’s termination of service for any reason, unvested options are forfeited as of the date of such termination without any payment to the participant.
As of December 31, 2015, a total of 2,980 shares underlying options exercised through December 31, 2015, were in transfer with the Company’s transfer agent.
As of December 31, 2015,2016, total remaining unrecognized compensation cost related to unvested stock options, net of estimated forfeitures, was approximately $64,816, and$44,162. The expense is expected to be recognized over a weighted-average period of 1.91.6 years. TheAs of December 31, 2016, the weighted average remaining contractual term of the outstanding options as of December 31, 2015 was 5.76.0 years for fully vested and exercisable options and 8.47.8 years for options expected to vest, respectively.vest.
Other AwardsAs of December 31, 2016, a total of 2,550 shares underlying options exercised through December 31, 2016, were in transfer with the Company’s transfer agent.
Other awards includeRestricted Stock and Restricted Stock Units
The Company grants awards of restricted stock to non-employee directors under the Company’s 2012 Directors Plan and restricted stock units (“RSUs”) to Company personnel under the Company’s 2012 Directors2015 Plan (and prior to its approval, under the 2012 Plan and the 2015 Plan, after its adoption.Plan). In addition, the Company has issued in the past, and may issue in the future, its equity securities to compensate employees of acquired businesses for future services. These issuances are on such terms and at such prices as the Company deems appropriate. Equity-based awards granted in connection with acquisitions of businesses are generally issued in the form of service-based awards dependent(dependent on continuing employment onlyonly) and performance-based awards, which are granted and vest only if certain specified performance conditions are met. The awards issued in connection with acquisitions of businesses are subject to the terms and conditions contained in the applicable award agreement and acquisition documents.

F-31

Tabledocuments with typical vesting period of Contents3 years, with 33.3% of the awards granted vesting in equal installments on the first, second and third anniversaries of the grant.


Service-Based Awards
SummarizedThe table below summarizes activity related to the Company’s equity-classified and liability-classified service-based awards for the years ended December 31, 2016, 2015 2014 and 2013 was as follows:2014:
Number of
Shares 
 
Weighted Average Grant Date
Fair Value Per Share 
Equity-Classified Equity-Settled
 Restricted Stock
 
Equity-Classified
Equity-Settled
Restricted Stock Units
 
Liability-Classified
Cash-Settled
Restricted Stock Units
Unvested service-based awards outstanding at January 1, 2013659,872
 $17.92
Awards granted15,524
 23.69
Awards vested(330,468) 17.33
Unvested service-based awards outstanding at December 31, 2013344,928
 $18.74
Number of
Shares 
 
Weighted Average Grant Date
Fair Value Per Share 
 
Number of
Shares 
 
Weighted Average Grant Date
Fair Value Per Share 
 
Number of
Shares 
 
Weighted Average Grant Date
Fair Value Per Share 
Unvested service-based awards outstanding at January 1, 2014344,928
 $18.74
 
 $
 
 $
Awards granted523,220
 40.41
452,720
 41.63
 70,500
 32.55
 
 
Awards vested(217,668) 17.84
(217,668) 17.84
 
 
 
 
Awards forfeited/cancelled(17,038) 21.14
(17,038) 21.14
 
 
 
 
Unvested service-based awards outstanding at December 31, 2014633,442
 $36.88
562,942
 $37.42
 70,500
 $32.55
 
 $
Awards granted113,614
 67.38
5,295
 70.79
 108,319
 67.21
 
 
Awards vested(279,129) 33.66
(261,504) 33.74
 (17,625) 32.55
 
 
Awards forfeited/cancelled(11,816) 34.47
106
 36.57
 (11,922) 34.49
 
 
Unvested service-based awards outstanding at December 31, 2015456,111
 $46.51
306,839
 $41.14
 149,272
 $57.55
 
 $
Awards granted6,510
 73.00
 408,629
 70.39
 207,586
 70.53
Awards vested(156,535) 42.64
 (41,015) 55.60
 
 
Awards forfeited/cancelled(2,689) 45.32
 (31,698) 70.44
 (3,085) 70.52
Unvested service-based awards outstanding at December 31, 2016154,125
 $40.89
 485,188
 $67.69
 204,501
 $70.53
For the year ended December 31, 2015, the Company issued a total of 5,295 shares of unvested (“restricted”) common stock under its 2012 Directors Compensation Plan with an aggregate grant date fair value of $375. As of December 31, 2015,2016, the aggregate unrecognized compensation expense relatedfor outstanding service-based equity-classified restricted stock was $3,444. This expense is expected to unvested stock underbe recognized over the 2012 Directors Plannext 1.0 years using the weighted average method.
As of December 31, 2016, the aggregate unrecognized compensation expense for all outstanding service-based equity-classified RSUs was $262.$22,584. This cost is expected to be recognized over the next 1.22.0 years using the weighted average method.
For the year ended December 31, 2015, the Company issued a total of 84,000 RSUs to certain key management personnel under the 2012 and 2015 Plans. The fair value of these RSUs at the time of the grants was $5,492. As of December 31, 2015,2016, the aggregate unrecognized compensation expense for all outstanding service-based liability-classified cash-settled RSUs was $5,691. This cost$8,842, which is expected to be recognized over the next 2.1 years using the weighted average method.
For the year ended December 31, 2015, the Company granted a total of 24,319 service-based awards to certain key management personnel of businesses acquired during that period. The aggregate grant date fair value of the awards was $1,789.
As of December 31, 2015, total unrecognized compensation cost related to unvested service-based awards was $11,090, which is expected to be recognized over the next 1.5 years using the weighted average method.
Performance -Based Awards
In 2014, the Company granted performance-based awards in connection with the acquisitions completed during that year. The total number of the awards varies based on attainment of certain performance targets pursuant to the terms of the relevant transaction documents. Typically, the vesting period is three years, with one third of the awards granted vesting in equal installments on the first, second and third anniversaries of the grant. If an eligible employee leaves the Company prior to a vesting date, the unvested portion of the award generally will be forfeited. The Company periodically evaluates the achievement of the related performance conditions during the applicable performance measurement period and the number of shares expected to be delivered, and resulting compensation expense is adjusted accordingly. During the year ended December 31, 2015, one-third2016, two-thirds of the performance-based awards issued in 2014 acquisitions vested, net of any forfeitures.

F-32


Summarized activity related to the Company’s performance-based awards for the years ended December 31, 2015,2016, was as follows:
 Number of Shares Weighted Average Grant Date Fair Value Per Share
Unvested performance-based awards outstanding at January 1, 2014
 $
Awards granted387,058
 38.18
Awards forfeited/cancelled(2,550) 36.57
Changes in the number of awards expected to be delivered(12,998) 5.47
Unvested performance-based awards outstanding at December 31, 2014371,510
 $39.34
Awards granted14,000
 70.22
Awards vested(117,749) 40.39
Awards forfeited/cancelled(1,360) 36.57
Changes in the number of awards expected to be delivered(19,105) 31.70
Unvested performance-based awards outstanding at December 31, 2015247,296
 $41.19
The aggregated grant date fair value of performance-based awards granted to certain key management personnel of businesses acquired during the year ended December 31, 2015 was $983.
 Equity-Classified
Equity-Settled
Restricted Stock
 Liability-Classified
Equity-Settled
Restricted Stock
 Equity-Classified
Equity-Settled
Restricted Stock Units
 
Number of
Shares 
 
Weighted Average Grant Date
Fair Value Per Share 
 
Number of
Shares 
 
Weighted Average Grant Date
Fair Value Per Share 
 
Number of
Shares 
 
Weighted Average Grant Date
Fair Value Per Share 
Unvested performance-based awards outstanding at January 1, 2014
 $
 
 $
 
 $
Awards granted26,441
 38.91
 360,617
 38.13
 
 
Awards vested
 
 
 
 
 
Awards forfeited/cancelled(2,550) 36.57
 
 
 
 
Changes in the number of awards expected to be delivered9,154
��36.57
 (22,152) 18.32
 
 
Unvested performance-based awards outstanding at December 31, 201433,045
 $38.44
 338,465
 $39.43
 
 $
Awards granted
 
 
 
 14,000
 70.22
Awards vested(12,145) 39.92
 (105,604) 40.44
 
 
Awards forfeited/cancelled(1,360) 36.57
 
 
 
 
Changes in the number of awards expected to be delivered2,550
 36.57
 (21,655) 32.27
 
 
Unvested performance-based awards outstanding at December 31, 201522,090
 $37.52
 211,206
 $39.65
 14,000
 $70.22
Awards granted
 
 
 
 
 
Awards vested(9,978) 40.15
 (105,604) 40.44
 (4,666) 70.22
Awards forfeited/cancelled(6,539) 36.97
 
 
 (4,667) 70.22
Unvested performance-based awards outstanding at December 31, 20165,573
 $33.47
 105,602
 $38.86
 4,667
 $70.22
As of December 31, 2015, total2016, the aggregate unrecognized compensation cost related to unvestedexpense for all outstanding performance-based awardsequity-classified restricted stock was $12,679.$144. That cost is expected to be recognized over the next 1.0 year using the weighted average method.
As of December 31, 2016, the aggregate unrecognized compensation expense for all outstanding performance-based liability-classified restricted stock was $3,002. That cost is expected to be recognized over the next 1.0 year using the weighted average method.
As of December 31, 2016, the aggregate unrecognized compensation expense for all outstanding performance-based equity-classified RSUs was $471. This expense is expected to be recognized over the next 1.3 years using the weighted average method.
14.15.EARNINGS PER SHARE
Basic earnings per share (“EPS”)EPS is computed by dividing the net income applicable to common stockholders for the period by the weighted average number of shares of common stock outstanding during the same period. Diluted earnings per share is computed by dividing the net income available to common shareholders by the weighted-average number of shares of common stock outstanding during the period increased to include the number of additional shares of common stock that would have been outstanding if the potentially dilutive securities had been issued. Potentially dilutive securities include outstanding stock options, unvested restricted stock and unvested RSUs. The dilutive effect of potentially dilutive securities is reflected in diluted earnings per share by application of the treasury stock method.

The following table sets forth the computation of basic and diluted earnings per share of common stock as follows:
 For the Years Ended December 31, For the Years Ended December 31,
 2015 2014 2013 2016 2015 2014
Numerator for common earnings per share:            
Net income $84,456
 $69,641
 $61,994
 $99,266
 $84,456
 $69,641
Numerator for basic and diluted earnings per share $84,456
 $69,641
 $61,994
 $99,266
 $84,456
 $69,641
            
Denominator for basic earnings per share:  
  
  
Denominator for basic and diluted earnings per share:

  
  
  
Weighted average common shares outstanding 48,721
 47,189
 45,754
 50,309
 48,721
 47,189
Effect of dilutive securities:            
Stock options, RSUs and performance-based awards 3,265
 2,545
 2,604
 2,906
 3,265
 2,545
Denominator for diluted earnings per share 51,986
 49,734
 48,358
 53,215
 51,986
 49,734
            
Net income per share:  
  
    
  
  
Basic $1.73
 $1.48
 $1.35
 $1.97
 $1.73
 $1.48
Diluted $1.62
 $1.40
 $1.28
 $1.87
 $1.62
 $1.40
For the years ended December 31, 2016, 2015 2014 and 20132014 a total of 1,6372,325, 2,2601,637 and 1,0802,260 shares underlying equity-based awards, respectively, were outstanding but were not included in the computation of diluted earnings per share because the effect was anti-dilutive.

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15.16.COMMITMENTS AND CONTINGENCIES
The Company leases office space under operating leases, which expire at various dates. Certain leases contain renewal provisions and generally require the Company to pay utilities, insurance, taxes, and other operating expenses. Rent expense under operating lease agreements for the years ended December 31, 2016, 2015 and 2014 was $28,220, $20,065, and 2013 was $20,065, $18,200 and $15,664 respectively. Future minimum rental payments under operating leases that have initial or remaining lease terms in excess of one year as of December 31, 20152016 were as follows:
Year Ending December 31, Operating Leases
2016 $17,606
2017 13,670
2018 9,730
2019 4,657
2020 1,289
Thereafter 2,664
Total minimum lease payments $49,616
Construction in progress — On December 7, 2011, the Company entered into an agreement with IDEAB Project Eesti AS (“IDEAB”) for the construction of an office building within the High Technologies Park in Minsk, Belarus (the “Construction Agreement”). At the same time, the Company entered into a related investment agreement with the Minsk Executive Committee acting on behalf of the Republic of Belarus (the “Investment Agreement”) permitting the Company to use land located in the government’s High Technologies Park to construct the new office building and granting certain tax benefits. The Construction Agreement committed IDEAB to construct an office building for the Company in Minsk with a completion date of February 28, 2014. In April 2014, IDEAB stopped its construction before the building’s completion, for reasons unrelated to the Company’s performance under the Construction Agreement. In May 2014, IDEAB notified the Company that it was unable to continue as general contractor to complete the construction of the building in time and on the terms agreed. As a result, the Company took control over the construction site. On July 7, 2014, the Company provided IDEAB with notice of termination of the Construction Agreement, effective on or about July 11, 2014. The Company filed a legal action against IDEAB in Belarus in August 2014, claiming breach of contract. In September 2014, the court decided in the Company’s favor and directed IDEAB to pay the Company $1,000 plus reimbursement of certain expenses. The Company is pursuing recovery from IDEAB of this amount. The Company has filed other lawsuits seeking recovery from IDEAB of additional amounts (including future work and construction materials) from IDEAB. These lawsuits are in various stages of litigation and it is not possible to estimate the likelihood of recovery.
The Investment Agreement specified a completion deadline for construction of September 15, 2012 extended by the parties to December 31, 2014, and further extended to October 1, 2015. As of September 30, 2015, the Company had completed the building and began depreciating approximately $22,714 of capitalized construction costs.
Year Ending December 31, Operating Leases
2017 $30,791
2018 24,706
2019 16,044
2020 10,271
2021 7,170
Thereafter 11,098
Total minimum lease payments $100,080
Indemnification Obligations  In the normal course of business, the Company is a party to a variety of agreements under which it may be obligated to indemnify the other party for certain matters. These obligations typically arise in contracts where the Company customarily agrees to hold the other party harmless against losses arising from a breach of representations or covenants for certain matters such as title to assets and intellectual property rights associated with certain arrangements. The duration of these indemnifications varies, and in certain cases, is indefinite.
The Company is unable to reasonably estimate the maximum potential amount of future payments under these or similar agreements due to the unique facts and circumstances of each agreement and the fact that certain indemnifications provide for no limitation to the maximum potential future payments under the indemnification. Management is not aware of any such matters that historically had or would have a material effect on the financial statements of the Company.
Litigation — From time to time, the Company is involved in litigation, claims or other contingencies. Management is not aware of any such matters that would have a material effect on the consolidated financial statements of the Company.

16.17.FAIR VALUE MEASUREMENTS
As required by the guidance for fair value measurements, financial assetsThe Company carries contingent liabilities and liabilities are classified in their entirety based on the lowest level of input that is significant to the fair value measurement. The fair value hierarchy requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. Thus, assets and liabilities categorized as Level 3 may be measuredcertain equity-based awards at fair value using inputs that are observable (Levels 1 and 2) and

F-34


unobservable (Level 3). Significant unobservable inputs usedon a recurring basis on its consolidated balance sheets. Changes in the fair value measurement of contingent consideration related to business acquisitions are forecasts of expected future operating results of those businesses as developed by the Company’s management and the probability of achievement of those operating forecasts. Management’s assessment of the significance of a particular input to the fair value measurement requires judgment and may affect the valuation of assets and liabilities and their placement within the fair value hierarchy levels. During the years ended December 31, 2015 and 2014, there were no transfers among Level 1, Level 2, or Level 3 classified financial assets and liabilities. Changes in the values of these financial liabilities if any, are typically recorded within selling, general and administrative expenses line on the Company’s consolidated statements of income and comprehensive income.
The following table tables show the fair values of the Company’s financial assets and liabilities measured at fair value on a recurring basis as of December 31, 20152016 and 2014:2015:
  As of December 2015
  Balance Level 1 Level 2 Level 3
Cash and cash equivalents 199,449
 199,449
 
 
Time deposits and restricted cash 30,419
 
 30,419
 
Employee loans 6,338
 
 
 6,338
Total assets measured at fair value $236,206
 $199,449
 $30,419
 $6,338
         
Contingent consideration 
 
 
 
Performance-based equity awards 5,364
 
 
 5,364
Total liabilities measured at fair value $5,364
 $
 $
 $5,364
  As of December 31, 2016
  Balance Level 1 Level 2 Level 3
Performance-based equity awards $3,789
 $3,789
 $
 $
Cash-settled restricted stock units 2,111
 2,111
 
 
Total liabilities measured at fair value on a recurring basis $5,900
 $5,900
 $
 $
  As of December 2014
  Balance Level 1 Level 2 Level 3
Cash and cash equivalents 220,534
 220,534
 
 
Time deposits and restricted cash 156
 
 156
 
Employee loans 6,515
 
 
 6,515
Total assets measured at fair value $227,205
 $220,534
 $156
 $6,515
         
Contingent consideration 37,400
 
 
 37,400
Performance-based equity awards 3,223
 
 
 3,223
Total liabilities measured at fair value $40,623
 $
 $
 $40,623
  As of December 31, 2015
  Balance Level 1 Level 2 Level 3
Performance-based equity awards $5,364
 $
 $
 $5,364
Total liabilities measured at fair value on a recurring basis

 $5,364
 $
 $
 $5,364
Performance-based equity awards carried at fair value on a recurring basis represent contractual liabilities related to certain business combination transactions completed in 2014. During the determination period, the Company classified the performance-based equity awards within Level 3. The Company classifies its contingent considerations within Level 3 as those inputs are specific to a given consideration and are not observable in the market. The housing loans are measured at the time of issuance using the Level 3 inputs withinestimated the fair value hierarchy because they are valued using significant unobservable inputs. Company issued short-term, non-interest bearing relocation and other loansof these liabilities based on transaction-specific inputs by discounting the expected cash flows to employees have a short term and high certaintypresent value, after taking into account estimated probabilities of repayment, therefore, their carrying amount is a reasonable estimate of their fair value.
The Company analyzes the rate of return that market participants in Belarus would require when investing in unsecured U.S. dollar-denominated government bonds with similar maturities (a “risk-free rate”) and evaluated a risk premium component to compensate the market participants for the credit and liquidity risks inherent in the loans’ cash flows. As of December 31, 2015 and December 31, 2014, the carrying values of outstanding employee loans and loans issued during those years approximated their fair values.
As of December 31, 2014, contingent consideration and performance-based equity awards included amounts payable in cash and stock in connection with the acquisitions of businesses completed inreaching specified performance targets, as appropriate. During the year ended December 31, 2014 (Note 2).2016, the fair value of the performance-based awards was measured using prices for which observable market information became available. As of December 31, 2015,a result, the only financialCompany reclassified these liabilities relatedfrom Level 3 to acquisitions of businesses included performance-based equity awards.Level 1.
The fair value of the contingent consideration,cash-settled restricted stock units is measured using prices for which observable market information is based on the present value of the expected future payments to be made to the sellers of the acquired businesses, was derived by analyzing the future performance of the acquired businesses using the earnout formula and performance targets specified in each purchase agreement and adjusting those amounts to reflectavailable.

F-35


the ability of the acquired entities to achieve the stated targets. The measurement period related to the contingent consideration for each 2014 acquisition was complete as of June 30, 2015, therefore, the amount of total consideration to be paid is no longer subject to change as of December 31, 2015.
A reconciliation of the beginning and ending balances of acquisition-related contractual contingent liabilities using significant unobservable inputs (Level 3) for the years ended December 31, 20152016 and 2014,2015, was as follows:
  Amount
Contractual contingent liabilities at January 1, 2014 $
Acquisition date fair value of contractual contingent liabilities — Netsoft 1,825
Acquisition date fair value of contractual contingent liabilities — Jointech 20,000
Acquisition date fair value of contractual contingent liabilities — GGA 11,400
Acquisition date fair value of contractual contingent liabilities — Great Fridays 1,173
Liability-classified stock-based awards 3,088
Changes in fair value of contractual contingent liabilities included in earnings 2,059
Changes in fair value of contractual contingent liabilities recorded against goodwill 1,366
Effect of net foreign currency exchange rate changes (288)
Settlements of contractual contingent liabilities 
Contractual contingent liabilities at December 31, 2014 $40,623
Liability-classified stock-based awards 5,148
Changes in fair value of contractual contingent liabilities included in earnings 4,355
Changes in fair value of contractual contingent liabilities recorded against goodwill 
Effect of net foreign currency exchange rate changes 246
Settlements of contractual contingent liabilities (45,008)
Contractual contingent liabilities at December 31, 2015 $5,364
Amount
Contractual contingent liabilities at January 1, 2014$
Acquisition date fair value of contractual contingent liabilities — Netsoft1,825
Acquisition date fair value of contractual contingent liabilities — Jointech20,000
Acquisition date fair value of contractual contingent liabilities — GGA11,400
Acquisition date fair value of contractual contingent liabilities — Great Fridays1,173
Liability-classified stock-based awards3,088
Changes in fair value of contractual contingent liabilities included in earnings2,059
Changes in fair value of contractual contingent liabilities recorded against goodwill1,366
Effect of net foreign currency exchange rate changes(288)
Contractual contingent liabilities at December 31, 201440,623
Liability-classified stock-based awards5,148
Changes in fair value of contractual contingent liabilities included in earnings4,355
Effect of net foreign currency exchange rate changes246
Settlements of contractual contingent liabilities(45,008)
Contractual contingent liabilities at December 31, 20155,364
Acquisition date fair value of contractual contingent liabilities — other acquisitions800
Liability-classified stock-based awards5,148
Changes in fair value of contractual contingent liabilities included in earnings1,232
Changes in fair value of contractual contingent liabilities recorded against goodwill200
Settlements of contractual contingent liabilities(8,955)
Reclassification of contractual contingent liabilities out of Level 3(3,789)
Contractual contingent liabilities at December 31, 2016$
Estimates of fair value of financial instruments not carried at fair value on a recurring basis on the Company’s consolidated balance sheets are generally subjective in nature, and are determined as of a specific point in time based on the characteristics of the financial instruments and relevant market information. The Company uses the following methods to estimate the fair values of its financial instruments:
for financial instruments that have quoted market prices, those quoted prices are used to estimate fair value;
for financial instruments for which no quoted market prices are available, fair value is estimated using information obtained from independent third parties, or by discounting the expected cash flows using an estimated current market interest rate for the financial instrument.
for financial instruments for which no quoted market prices are available and that have no defined maturity, have a remaining maturity of 360 days or less, or reprice frequently to a market rate, the Company assumes that the fair value of these instruments approximates their reported value, after taking into consideration any applicable credit risk;
The generally short duration of certain of the Company’s assets and liabilities results in a significant number of assets and liabilities for which fair value equals or closely approximates the amount recorded on the Company’s consolidated balance sheets. These assets and liabilities are reported on the Company’s consolidated balance sheets:
cash and cash equivalents;
time deposits and restricted cash;
employee loans and notes receivable;
borrowings under the 2014 Credit Facility (Note 13)
In addition, due to the relatively short duration of certain of our loans, the Company considers fair value for these loans to approximate their carrying amounts. The fair value of other types of loans, such as employee loans issued under the Housing Program, is estimated using information on the rates of return that market participants in Belarus would require when investing in unsecured U.S. dollar-denominated government bonds with similar maturities (a “risk-free rate”), after taking into consideration any applicable credit and liquidity risk.

The following tables present the reported amounts and estimated fair values of the financial assets and liabilities not carried at fair value on a recurring basis, as they would be categorized within the fair-value hierarchy, as of the dates indicated:
      Fair Value Hierarchy
  Balance Estimated Fair Value Level 1 Level 2 Level 3
December 31, 2016          
Financial Assets:          
Cash and cash equivalents $362,025
 $362,025
 $362,025
 $
 $
Time deposits and restricted cash $3,042
 $3,042
 $
 $3,042
 $
Employee loans $5,978
 $5,978
 $
 $
 $5,978
Financial Liabilities:          
Borrowing under 2014 Credit Facility $25,019
 $25,019
 $
 $25,019
 $
      Fair Value Hierarchy
  Balance Estimated Fair Value Level 1 Level 2 Level 3
December 31, 2015          
Financial Assets:          
Cash and cash equivalents $199,449
 $199,449
 $199,449
 $
 $
Time deposits and restricted cash $30,419
 $30,419
 $
 $30,419
 $
Employee loans $6,338
 $6,338
 $
 $
 $6,338
Financial Liabilities:          
Borrowing under 2014 Credit Facility $35,000
 $35,000
 $
 $35,000
 $
17.18.OPERATING SEGMENTSSEGMENT INFORMATION
    
The Company determines its operatingbusiness segments and reports segment information in accordance with the management approach, which designates internal reporting used by management to make operating decisions and assess performance as the source of the Company’s reportable segments.
The Company manages its business primarily based on the geographic managerial responsibility for its client base. As managerial responsibility for a particular client relationship generally correlates with the client’s geographic location, there is a high degree of similarity between client locations and the geographic boundaries of the Company’s reportable segments. In some cases, managerial responsibility for a particular client is assigned to a management team in another region and is usually based on the strength of the relationship between client executives and particular members of EPAM’s senior management team. In such a case, the client’s activity would be reported through the management team’s reportable segment.
The Company’s reportable segments are North America, Europe, Russia and Other. The revenues in the Other segment represented less than 1% of total segment revenues in 2014 and 2015 due to the ending of certain customer relationships and contractual changes with other clients. As no substantial clients remained in the segment, during the first quarter of 2016, the Company shifted managerial responsibility for the remaining clients to the Russia segment. This change does not represent a change in the Company's existing segments but rather a movement in responsibility for several clients that represent less than 1% of total segment revenue.
The Company’s Chief Operating Decision Maker (“CODM”) evaluates performance and allocates resources based on the segment’s revenues and operating profit. Segment operating profit is defined as income from operations before unallocated costs. Generally, operating expenses for each operatingreportable segment have similar characteristics and are subject to similar factors, pressures and challenges. Expenses included in segment operating profit consist principally of direct selling and delivery costs as well as an allocation of certain shared services expenses. Certain expenses such as stock-based compensationthat are not controllable at the segment level are not allocated to specific segments, as management does not believe it is practical as thesesegments. Such “unallocated” expenses are not directly attributable to any specific segmentdeducted against the Company’s total income from operations and consequently are not allocated to individual segments in internal management reports used by the CODM. Such expenses are separately disclosed as “unallocated” and adjusted only against the Company’s total income from operations.

F-36


Revenues from external customers and segment operating profit, before unallocated expenses, for the North America, Europe, Russia and Other reportable segments were as follows:
 For the years ended December 31, For the years ended December 31,
 2015 2014 2013 2016 2015 2014
Total segment revenues:            
North America $471,603
 $374,509
 $284,636
 $642,216
 $471,603
 $374,509
Europe 400,460
 299,279
 204,150
 474,988
 400,460
 299,279
Russia 37,992
 50,663
 55,764
 43,611
 37,992
 50,663
Other 4,911
 5,552
 10,493
 
 4,911
 5,552
Total segment revenues $914,966
 $730,003
 $555,043
 $1,160,815
 $914,966
 $730,003
Segment operating profit:            
North America $112,312
 $90,616
 $66,814
 $143,021
 $112,312
 $90,616
Europe 68,717
 50,189
 34,573
 67,545
 68,717
 50,189
Russia 5,198
 7,034
 7,077
 7,555
 5,198
 7,034
Other (94) (3,220) 844
 
 (94) (3,220)
Total segment operating profit $186,133
 $144,619
 $109,308
 $218,121
 $186,133
 $144,619
Intersegment transactions were excluded from the above on the basis that they are neither included into the measure of a segment’s profit and loss by the CODM, nor provided to the CODM on a regular basis.
During the yearyears ended December 31, 2016, 2015 and 2014, revenues from one customer, UBS AG, were $138,124, $130,605 and $97,872, respectively and accounted for more than 10% of total revenues. Revenue from this customer is reported in the Company’s Europe segment and includes reimbursable expenses. No customer accounted for over 10% of total revenues in 2013.
Trade accounts receivable and unbilled revenues are generally dispersed across our clients in proportion to their revenues. As of December 31, 2016, unbilled trade receivables from two customers, individually exceeded 10% and accounted for 22.2% of our total unbilled trade receivables. There were no customers individually exceeding 10% of our billed trade receivables as of December 31, 2016. As of December 31, 2015, billed and unbilled trade receivables from one customer, UBS AG, individually exceeded 10% and accounted for 12.4% and 19.8% of our total billed and unbilled trade receivables, respectively.

F-37


Reconciliation of segment revenues and operating profit to consolidated income before provision for income taxes is presented below:
 For the Years Ended December 31, For the Years Ended December 31,
 2015 2014 2013 2016 2015 2014
Total segment revenues $914,966
 $730,003
 $555,043
 $1,160,815
 $914,966
 $730,003
Unallocated (revenue)/loss (838) 24
 74
 (683) (838) 24
Revenues $914,128
 $730,027
 $555,117
 $1,160,132
 $914,128
 $730,027
            
Total segment operating profit: $186,133
 $144,619
 $109,308
 $218,121
 $186,133
 $144,619
Unallocated amounts:            
Other (revenues)/loss (838) 24
 74
 (683) (838) 24
Stock-based compensation expense (45,833) (24,620) (13,150) (49,244) (45,833) (24,620)
Non-corporate taxes (4,274) (6,882) (3,201) (5,909) (4,274) (6,882)
Professional fees (7,104) (5,312) (3,651) (8,265) (7,104) (5,312)
Depreciation and amortization (5,581) (7,988) (2,829) (8,290) (5,581) (7,988)
Bank charges (1,352) (1,049) (1,194) (1,515) (1,352) (1,049)
One-time charges (747) (5,983) 
 (706) (747) (5,983)
Provision for bad debts 
 
 (36)
Other corporate expenses (14,437) (6,626) (8,828) (9,813) (14,437) (6,626)
Income from operations 105,967
 86,183
 76,493
 133,696
 105,967
 86,183
Interest and other income, net 4,731
 4,769
 3,077
 4,848
 4,731
 4,769
Change in fair value of contingent consideration 
 (1,924) 
 
 
 (1,924)
Foreign exchange loss (4,628) (2,075) (2,800) (12,078) (4,628) (2,075)
Income before provision for income taxes $106,070
 $86,953
 $76,770
 $126,466
 $106,070
 $86,953
Geographic Area Information
Long-lived assets include property and equipment, net of accumulated depreciation and amortization, and management has determined that it is not practical to allocate these assets by segment since such assets are used interchangeably among the segments. Geographical information about the Company’s long-lived assets based on physical location of the assets was as follows:
December 31,
2015
 December 31,
2014
December 31,
2016
 December 31,
2015
Belarus$44,879
 $41,652
$46,011
 $44,879
Russia7,203
 2,084
Ukraine4,487
 4,392
5,610
 4,487
Hungary2,485
 2,773
3,485
 2,485
Russia2,084
 2,196
United States1,969
 2,001
2,618
 1,969
Poland2,213
 1,088
China1,887
 514
India1,099
 
1,650
 1,099
Poland1,088
 747
Other2,408
 1,373
2,939
 1,894
Total$60,499
 $55,134
$73,616
 $60,499

F-38


Information about the Company’s revenues by client location is as follows:
 For the Years Ended December 31, For the Years Ended December 31,
 2015 2014 2013 2016 2015 2014
United States $427,433
 $318,304
 $247,979
 $605,856
 $427,433
 $318,304
United Kingdom 164,301
 141,366
 108,892
 174,719
 164,301
 141,366
Switzerland 111,353
 87,111
 51,941
 122,399
 111,353
 87,111
Canada 57,643
 49,193
 33,759
 58,742
 57,643
 49,193
Germany 43,216
 36,089
 25,740
Russia 36,506
 48,945
 53,328
 40,866
 36,506
 48,945
Germany 36,089
 25,740
 20,261
Sweden 22,945
 10,589
 7,892
Hong Kong 23,117
 13,445
 
 20,333
 23,117
 13,445
Sweden 10,589
 7,892
 5,742
Netherlands 9,989
 8,838
 7,719
 16,762
 9,989
 8,838
Belgium 7,916
 4,198
 
 8,505
 7,916
 4,198
Ireland 5,437
 3,667
 291
 5,152
 5,437
 3,667
Kazakhstan 4,910
 5,238
 9,886
China 4,445
 817
 
Italy 3,970
 2,318
 1,746
Spain 3,406
 1,028
 106
Other locations 9,334
 7,680
 7,693
 16,295
 10,081
 11,066
Reimbursable expenses and other revenues 9,511
 8,410
 7,626
 12,521
 9,511
 8,410
Revenues $914,128
 $730,027
 $555,117
 $1,160,132
 $914,128
 $730,027
Service Offering Information
Information about the Company’s revenues by service offering is as follows:
 For the Years Ended December 31, For the Years Ended December 31,
 2015 2014 2013 2016 2015 2014
Software development $644,732
 $504,590
 $374,426
 $841,916
 $644,732
 $504,590
Application testing services 174,259
 140,363
 109,222
 223,010
 174,259
 140,363
Application maintenance and support 70,551
 58,840
 45,971
 74,475
 70,551
 58,840
Infrastructure services 11,311
 14,198
 14,433
 5,069
 11,311
 14,198
Licensing 3,764
 3,626
 3,439
 3,141
 3,764
 3,626
Reimbursable expenses and other revenues 9,511
 8,410
 7,626
 12,521
 9,511
 8,410
Revenues $914,128
 $730,027
 $555,117
 $1,160,132
 $914,128
 $730,027


F-39


18.19.QUARTERLY FINANCIAL DATA (UNAUDITED)
Summarized quarterly results for the two years ended December 31, 20152016 and 20142015 were as follows:
 Three Months Ended  Three Months Ended   
2015 March 31  June 30  September 30  December 31  Full Year 
2016 March 31  June 30  September 30  December 31  Full Year 
Revenues $200,045
 $217,781
 $236,049
 $260,253
 $914,128
 $264,482
 $283,832
 $298,293
 $313,525
 $1,160,132
Operating expenses:   
        
   
        
Cost of revenues (exclusive of depreciation and amortization) 125,887
 134,256
 148,479
 158,291
 566,913
 167,381
 180,782
 190,797
 198,226
 737,186
Selling, general and administrative expenses 46,938
 55,976
 55,431
 64,414
 222,759
 61,494
 64,241
 67,491
 71,432
 264,658
Depreciation and amortization expense 4,200
 3,903
 4,393
 4,899
 17,395
 5,102
 6,123
 5,925
 6,237
 23,387
Goodwill impairment loss 
 
 
 
 
Other operating (income)/expenses, net 200
 40
 (30) 884
 1,094
Other operating expenses, net 174
 606
 178
 247
 1,205
Income from operations 22,820
 23,606
 27,776
 31,765
 105,967
 30,331
 32,080
 33,902
 37,383
 133,696
Interest and other income, net 1,158
 1,299
 865
 1,409
 4,731
 1,211
 1,138
 1,067
 1,432
 4,848
Change in fair value of contingent consideration 
 
 
 
 
Foreign exchange (loss)/income (5,754) (465) 32
 1,559
 (4,628)
Foreign exchange loss (1,290) (2,295) (1,728) (6,765) (12,078)
Income before provision for income taxes 18,224
 24,440
 28,673
 34,733
 106,070
 30,252
 30,923
 33,241
 32,050
 126,466
Provision for income taxes 3,510
 5,209
 5,800
 7,095
 21,614
 6,353
 6,493
 7,067
 7,287
 27,200
Net income $14,714
 $19,231
 $22,873
 $27,638
 $84,456
 $23,899
 $24,430
 $26,174
 $24,763
 $99,266
Comprehensive income $11,984
 $22,905
 $14,532
 $21,939
 $71,360
 $28,598
 $22,044
 $26,532
 $19,554
 $96,728
Basic net income per share(1)
 $0.31
 $0.40
 $0.47
 $0.56
 $1.73
 $0.48
 $0.49
 $0.51
 $0.49
 $1.97
Diluted net income per share(1)
 $0.29
 $0.37
 $0.44
 $0.52
 $1.62
 $0.45
 $0.46
 $0.49
 $0.46
 $1.87
(1)Earnings per share amounts for each quarter may not necessarily total to the yearly earnings per share due to the weighting of shares outstanding on a quarterly and year to date basis.
 Three Months Ended  Three Months Ended   
2014 March 31  June 30  September 30  December 31  Full Year 
2015 March 31  June 30  September 30  December 31  Full Year 
Revenues $160,384
 $174,695
 $192,764
 $202,184
 $730,027
 $200,045
 $217,781
 $236,049
 $260,253
 $914,128
Operating expenses:  
        
  
        
Cost of revenues (exclusive of depreciation and amortization) 102,454
 110,102
 122,509
 121,465
 456,530
 125,887
 134,256
 148,479
 158,291
 566,913
Selling, general and administrative expenses 32,359
 38,671
 42,875
 49,761
 163,666
 46,938
 55,976
 55,431
 64,414
 222,759
Depreciation and amortization expense 3,689
 5,451
 5,510
 2,833
 17,483
 4,200
 3,903
 4,393
 4,899
 17,395
Goodwill impairment loss 
 
 
 2,241
 2,241
Other operating (income)/expenses, net 25
 1,995
 35
 1,869
 3,924
Other operating expenses/(income), net 200
 40
 (30) 884
 1,094
Income from operations 21,857
 18,476
 21,835
 24,015
 86,183
 22,820
 23,606
 27,776
 31,765
 105,967
Interest and other income, net 976
 1,164
 1,261
 1,368
 4,769
 1,158
 1,299
 865
 1,409
 4,731
Change in fair value of contingent consideration 
 
 
 (1,924) (1,924)
Foreign exchange (loss)/income (1,241) (1,239) (718) 1,123
 (2,075) (5,754) (465) 32
 1,559
 (4,628)
Income before provision for income taxes 21,592
 18,401
 22,378
 24,582
 86,953
 18,224
 24,440
 28,673
 34,733
 106,070
Provision for income taxes 4,228
 3,587
 3,338
 6,159
 17,312
 3,510
 5,209
 5,800
 7,095
 21,614
Net income $17,364
 $14,814
 $19,040
 $18,423
 $69,641
 $14,714
 $19,231
 $22,873
 $27,638
 $84,456
Comprehensive income $13,787
 $17,708
 $10,780
 $7,115
 $49,390
 $11,984
 $22,905
 $14,532
 $21,939
 $71,360
Basic net income per share(1)
 $0.37
 $0.31
 $0.40
 $0.39
 $1.48
 $0.31
 $0.40
 $0.47
 $0.56
 $1.73
Diluted net income per share(1)
 $0.35
 $0.30
 $0.38
 $0.37
 $1.40
 $0.29
 $0.37
 $0.44
 $0.52
 $1.62
(1)Earnings per share amounts for each quarter may not necessarily total to the yearly earnings per share due to the weighting of shares outstanding on a quarterly and year to date basis.

SCHEDULE II
VALUATION AND QUALIFYING ACCOUNTS
(US Dollars inthousands)
The table below summarizes movements in qualifying accounts, which include accounts receivable and notes receivable (from customers) for the years ended December 31, 2016, 2015 and 2014:
F-40
  
Balance at
Beginning of
Year 
 Charged to Expenses 
Deductions/
Write offs
 Balance at End of Year 
Fiscal Year 2014 $1,800
 $1,325
 $(944) $2,181
Fiscal Year 2015 2,181
 1,704
 (2,156) 1,729
Fiscal Year 2016 1,729
 3,500
 (3,215) 2,014







F-43