Table of Contents


 
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
Form 10-Q
Form 10-Q
(Mark One)
xQUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the quarterly period ended SeptemberJune 30, 20182019
or
¨TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the transition period from to
Commission File Number: 001-16391
Axon Enterprise, Inc.
(Exact name of registrant as specified in its charter)
Delaware 86-0741227
(State or other jurisdiction of
incorporation or organization)
 
(I.R.S. Employer
Identification No.)
  
17800 North 85th Street
Scottsdale, Arizona
 85255
Scottsdale,Arizona
(Address of principal executive offices) (Zip Code)
(480) (480)991-0797
(Registrant’s telephone number, including area code)
Not Applicable
(Former name, former address and former fiscal year, if changed since last report)

Securities registered pursuant to Section 12(b) of the Act:
Title of each classTrading Symbol(s)Name of each exchange on which registered
Common Stock, $0.00001 Par ValueAAXNThe Nasdaq Global Select Market
 
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.    Yesý    No  ¨
Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).    Yesý    No  ¨
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.
Large accelerated filer ýAccelerated filer ¨

    
Non-accelerated filerFiler ¨
Smaller reporting company ¨
      
   Emerging growth company ¨
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ¨
Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).    Yes  ¨    No  ý
The number of shares of the registrant’s common stock outstanding as of October 31, 2018July 30, 2019 was 58,448,574.59,255,274.
 

AXON ENTERPRISE, INC.
INDEX TO QUARTERLY REPORT ON FORM 10-Q
FOR THE QUARTERLY PERIOD ENDED SEPTEMBERJUNE 30, 20182019
 
   Page
    


    
 
 
  
  
  
  
 
 
 
 
 
 
 
 
 
 
 
 



Table of Contents


Special Note Regarding Forward-Looking Statements


This Report on Form 10-Q contains “forward-looking statements” within the meaning of Section 27A of the Securities Act of 1933, as amended (the “Securities Act”), and Section 21E of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), including statements regarding our expectations, beliefs, intentions and strategies regarding the future. We intend that such forward-looking statements be subject to the safe-harbor provided by the Private Securities Litigation Reform Act of 1995.From time to time, we also provide forward-looking statements in other materials we release to the public as well as verbal forward-looking statements. These forward-looking statements include, without limitation, statements regarding: proposed products and services and related development efforts and activities; expectations about the market for our current and future products and services; the impact of pending litigation; our outlook for 2019 with respect to revenue, stock compensation expense, and income tax rate; trends relating to subscription plan programs and revenues; our anticipation that contracts with governmental customers will be fulfilled; expected trends, including the benefits of, research and development investments; the sufficiency of our liquidity and financial resources; that we may repurchase our common stock; expectations about customer behavior; statements concerning projections, predictions, expectations, estimates or forecasts as to our business, financial and operational results and future economic performance; and statements of management’s strategies, goals and objectives and other similar expressions; as well as the ultimate resolution of financial statement items requiring critical accounting estimates, including those set forth in our Form 10-K for the year ended December 31, 2017.2018. Such statements give our current expectations or forecasts of future events; they do not relate strictly to historical or current facts. Words such as “may,” “will,” “should,” “could,” “would,” “predict,” “potential,” “continue,” “expect,” “anticipate,” “future,” “intend,” “plan,” “believe,” “estimate,” and similar expressions, as well as statements in future tense, identify forward-looking statements. However, not all forward-looking statements contain these identifying words.


We cannot guarantee that any forward-looking statement will be realized, although we believe we have been prudent in our plans and assumptions. Achievement of future results is subject to risks, uncertainties and potentially inaccurate assumptions. The following important factors could cause actual results to differ materially from those in the forward-looking statements: customer purchase behavior, including adoption of our software as a service delivery model; the impact of product mix on projected gross margins; our ability to manage our supply chain and avoid production delays, shortages, and impacts to expected gross margins; changes in the costs of product components and labor; defects in our products; delayed cash collections and possible credit losses due to our subscription model; exposure to international operational risks; our ability to design, introduce and sell new products or features; our ability to defend against litigation and protect our intellectual property, and the resulting costs of this activity; our exposure to cancellations of government contracts due to appropriation clauses, exercise of a cancellation clause, or non-exercise of contractually optional periods; our ability to design, introduce and sell new products or features; our ability to manage our supply chain and avoid production delays or shortages; changes in the costs of product components and labor; defects in our products; the impact of product mix on projected gross margins; loss of customer data, a breach of security or an extended outage, including our reliance on third party cloud-based storage providers; negative media publicity regarding our products; our ability to defend against litigation and protect our intellectual property, and the resulting costs of this activity; changes in government regulations in the U.S. and in foreign markets, especially related to the classification of our product by the United States Bureau of Alcohol, Tobacco, Firearms and Explosives;Explosives and to evolving regulations surrounding privacy and data protection; our ability to integrate acquired businesses; our ability to attract and retain key personnel; and counter-party risks relating to cash balances held in excess of FDIC insurance limits; our ability to integrate acquired businesses; and our ability to attract and retain key personnel.limits. Many events beyond our control may determine whether results we anticipate will be achieved. Should known or unknown risks or uncertainties materialize, or should underlying assumptions prove inaccurate, actual results could differ materially from past results and those anticipated, estimated or projected. You should bear this in mind as you consider forward-looking statements. The Annual Report on Form 10-K that we filed with the SEC on March 1, 2018February 27, 2019 listed various important factors that could cause actual results to differ materially from expected and historical results. These factors are intended as cautionary statements for investors within the meaning of Section 21E of the Exchange Act and Section 27A of the Securities Act. Readers can find them under the heading “Risk Factors” in the Report on Form 10-K and in this Report on Form 10-Q, and investors should refer to them. You should understand that it is not possible to predict or identify all such factors. Consequently, you should not consider any such list to be a complete set of all potential risks or uncertainties.


Except as required by law, we undertake no obligation to publicly update forward-looking statements, whether as a result of new information, future events or otherwise. You are advised, however, to consult any further disclosures we make on related subjects in our Form 10-Q, 8-K and 10-K reports to the Securities and Exchange Commission ("SEC"). Our filings with the SEC may be accessed at the SEC’s web site at www.sec.gov.




ii

Table of Contents


PART I - FINANCIAL INFORMATION
Item 1. Financial Statements
AXON ENTERPRISE, INC.
CONDENSED CONSOLIDATED BALANCE SHEETS
(in thousands, except share data)
September 30, 2018 December 31, 2017June 30, 2019 December 31, 2018
(Unaudited)  (Unaudited)  
ASSETS      
Current assets:      
Cash and cash equivalents$324,371
 $75,105
$219,720
 $349,462
Short-term investments500
 6,862
116,629
 
Accounts and notes receivable, net of allowance of $1,559 and $754 as of September 30, 2018 and December 31, 2017, respectively116,518
 56,064
Accounts and notes receivable, net of allowance of $1,577 and $1,882 as of June 30, 2019 and December 31, 2018, respectively134,630
 130,579
Contract assets, net13,263
 
26,648
 13,960
Inventory39,221
 45,465
40,999
 33,763
Prepaid expenses and other current assets30,514
 21,696
36,429
 30,391
Total current assets524,387
 205,192
575,055
 558,155
Property and equipment, net of accumulated depreciation of $38,599 and $36,477 as of September 30, 2018 and December 31, 2017, respectively35,613
 31,172
Property and equipment, net of accumulated depreciation of $42,822 and $39,885 as of June 30, 2019 and December 31, 2018, respectively40,500
 37,893
Deferred income tax assets, net18,080
 15,755
20,658
 19,347
Intangible assets, net16,956
 18,823
14,424
 15,935
Goodwill25,043
 14,927
24,969
 24,981
Long-term notes receivable, net of current portion38,220
 36,877
35,170
 40,230
Other assets23,396
 15,366
35,594
 22,999
Total assets$681,695
 $338,112
$746,370
 $719,540
LIABILITIES AND STOCKHOLDERS’ EQUITY      
Current liabilities:      
Accounts payable$8,998
 $8,592
$9,064
 $15,164
Accrued liabilities36,908
 23,502
34,011
 41,092
Current portion of deferred revenue89,637
 70,401
113,351
 107,016
Customer deposits4,111
 3,673
3,395
 2,702
Current portion of business acquisition contingent consideration1,736
 1,693
Other current liabilities115
 89
3,852
 37
Total current liabilities141,505
 107,950
163,673
 166,011
Deferred revenue, net of current portion69,382
 54,881
74,586
 74,417
Liability for unrecognized tax benefits1,805
 1,706
3,462
 2,849
Long-term deferred compensation3,590
 3,859
3,755
 3,235
Business acquisition contingent consideration, net of current portion
 1,048
Other long-term liabilities5,751
 1,224
11,967
 5,704
Total liabilities222,033
 170,668
257,443
 252,216
Commitments and contingencies (Note 11)
 
Commitments and contingencies (Note 12)

 

Stockholders’ equity:      
Preferred stock, $0.00001 par value; 25,000,000 shares authorized; no shares issued and outstanding as of September 30, 2018 and December 31, 2017
 
Common stock, $0.00001 par value; 200,000,000 shares authorized; 58,419,742 and 52,969,869 shares issued and outstanding as of September 30, 2018 and December 31, 2017, respectively1
 1
Preferred stock, $0.00001 par value; 25,000,000 shares authorized; no shares issued and outstanding as of June 30, 2019 and December 31, 2018
 
Common stock, $0.00001 par value; 200,000,000 shares authorized; 59,251,731 and 58,810,637 shares issued and outstanding as of June 30, 2019 and December 31, 2018, respectively1
 1
Additional paid-in capital447,933
 201,672
467,904
 453,400
Treasury stock at cost, 20,220,227 shares as of September 30, 2018 and December 31, 2017(155,947) (155,947)
Treasury stock at cost, 20,220,227 shares as of June 30, 2019 and December 31, 2018(155,947) (155,947)
Retained earnings169,301
 123,185
178,540
 171,383
Accumulated other comprehensive loss(1,626) (1,467)(1,571) (1,513)
Total stockholders’ equity459,662
 167,444
488,927
 467,324
Total liabilities and stockholders’ equity$681,695
 $338,112
$746,370
 $719,540
The accompanying notes are an integral part of these condensed consolidated financial statements.

AXON ENTERPRISE, INC.
UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS
AND COMPREHENSIVE INCOME (LOSS)
(in thousands, except per share data)
 
Three Months Ended September 30, Nine Months Ended September 30,Three Months Ended June 30, Six Months Ended June 30,
2018 2017 2018 20172019 2018 2019 2018
Net sales from products$80,923
 $73,985
 $238,618
 $208,351
$80,391
 $76,721
 $168,480
 $157,695
Net sales from services23,913
 16,277
 66,659
 40,796
31,971
 22,505
 59,692
 42,746
Net sales104,836
 90,262
 305,277
 249,147
112,362
 99,226
 228,172
 200,441
Cost of product sales32,953
 34,573
 96,474
 91,817
38,220
 31,087
 77,820
 63,521
Cost of service sales6,250
 5,924
 15,566
 13,258
8,582
 4,996
 15,875
 9,316
Cost of sales39,203
 40,497
 112,040
 105,075
46,802
 36,083
 93,695
 72,837
Gross margin65,633
 49,765
 193,237
 144,072
65,560
 63,143
 134,477
 127,604
Operating expenses:              
Sales, general and administrative39,685
 36,398
 114,787
 99,079
43,362
 39,343
 86,254
 75,102
Research and development21,982
 14,166
 55,602
 39,618
23,493
 18,501
 46,847
 33,620
Total operating expenses61,667
 50,564
 170,389
 138,697
66,855
 57,844
 133,101
 108,722
Income (loss) from operations3,966
 (799) 22,848
 5,375
(1,295) 5,299
 1,376
 18,882
Interest and other income, net1,274
 1,430
 2,242
 3,320
Interest and other income (expense), net1,845
 (295) 4,158
 968
Income before provision for income taxes5,240
 631
 25,090
 8,695
550
 5,004
 5,534
 19,850
Provision for (benefit from) income taxes(471) 209
 (2,032) 1,417
(188) (3,481) (1,623) (1,561)
Net income$5,711
 $422
 $27,122
 $7,278
$738
 $8,485
 $7,157
 $21,411
Net income per common and common equivalent shares:              
Basic$0.10
 $0.01
 $0.49
 $0.14
$0.01
 $0.15
 $0.12
 $0.39
Diluted$0.10
 $0.01
 $0.47
 $0.14
$0.01
 $0.15
 $0.12
 $0.38
Weighted average number of common and common equivalent shares outstanding:              
Basic58,340
 52,831
 55,681
 52,663
59,187
 55,527
 59,051
 54,330
Diluted59,805
 53,843
 57,254
 53,762
60,000
 57,054
 59,876
 55,892
              
UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)
UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOMEUNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
Net income$5,711
 $422
 $27,122
 $7,278
$738
 $8,485
 $7,157
 $21,411
Foreign currency translation adjustments(107) (1,560) (159) (2,111)(108) 655
 (58) (52)
Comprehensive income (loss)$5,604
 $(1,138) $26,963
 $5,167
Comprehensive income$630
 $9,140
 $7,099
 $21,359

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


AXON ENTERPRISE, INC.
UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY
(in thousands, except per share data)
 Common Stock Additional
Paid-in
Capital
 Treasury Stock Retained
Earnings
 Accumulated
Other
Comprehensive
Loss
 Total
Stockholders’
Equity
 Shares Amount  Shares Amount   
Balance, December 31, 201752,969,869
 $1
 $201,672
 20,220,227
 $(155,947) $123,185
 $(1,467) $167,444
Cumulative effect of applying a change in accounting principle
 
 
 
 
 18,994
 
 18,994
Issuance of common stock under employee plans337,214
 
 (3,421) 
 
 
 
 (3,421)
Stock-based compensation
 
 4,093
 
 
 
 
 4,093
Net income
 
 
 
 
 12,926
 
 12,926
Foreign currency translation adjustments
 
 
 
 
 
 (707) (707)
Balance, March 31, 201853,307,083
 1
 202,344
 20,220,227
 (155,947) 155,105
 $(2,174) 199,329
Issuance of common stock4,645,000
 
 233,993
 
 
 
 
 233,993
Issuance of common stock for business combination58,843
 
 8,226
 
 
 
 
 8,226
Issuance of common stock under employee plans278,687
 
 (6,800) 




 
 (6,800)
Stock-based compensation
 
 4,954
 




 
 4,954
Net income
 
 
 



8,485
 
 8,485
Foreign currency translation adjustments
 
 
 
 
 
 655
 655
Balance, June 30, 201858,289,613
 $1
 $442,717
 20,220,227
 $(155,947) $163,590
 $(1,519) $448,842
                
Balance, December 31, 201858,810,637
 $1
 $453,400
 20,220,227
 $(155,947) $171,383
 $(1,513) $467,324
Issuance of common stock under employee plans298,649
 
 (1,159) 
 
 
 
 (1,159)
Stock-based compensation
 
 7,905
 
 
 
 
 7,905
Net income
 
 
 
 
 6,419
 
 6,419
Foreign currency translation adjustments
 
 
 
 
 
 50
 50
Balance, March 31, 201959,109,286
 1
 460,146
 20,220,227
 (155,947) 177,802
 $(1,463) 480,539
Issuance of common stock under employee plans71,832
 
 (869) 
 
 
 
 (869)
Stock-based compensation
 
 8,627
 
 
 
 
 8,627
Issuance of common stock for business combination contingent consideration70,613
 
 
 
 
 
 
 
Net income
 
 
 
 
 738
 
 738
Foreign currency translation adjustments
 
 
 
 
 
 (108) (108)
Balance, June 30, 201959,251,731
 $1
 $467,904
 20,220,227
 $(155,947) $178,540
 $(1,571) $488,927
The accompanying notes are an integral part of these condensed consolidated financial statements.


AXON ENTERPRISE, INC.
UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
(in thousands)
Nine Months Ended September 30,Six Months Ended June 30,
2018 20172019 2018
Cash flows from operating activities:      
Net income$27,122
 $7,278
$7,157
 $21,411
Adjustments to reconcile net income to net cash provided by (used in) operating activities:      
Depreciation and amortization8,226
 5,677
5,487
 5,161
Purchase accounting adjustments to goodwill
 (23)
Loss on disposal and impairment of property and equipment, net290
 
1,563
 153
Loss on disposal and abandonment of intangible assets2,103
 
18
 54
Bond premium amortization34
 594
Stock-based compensation15,302
 11,423
16,532
 9,047
Deferred income taxes(2,326) (4,155)(1,311) (58)
Unrecognized tax benefits99
 (134)613
 212
Other noncash, net1,822
 30
Change in assets and liabilities:      
Accounts and notes receivable and contract assets(51,172) (26,027)(11,006) (24,791)
Inventory9,033
 (19,074)(7,515) 4,508
Prepaid expenses and other assets(12,081) (11,252)(5,761) (7,429)
Accounts payable, accrued and other liabilities4,306
 3,382
(16,752) (2,688)
Deferred revenue31,700
 26,460
6,577
 10,496
Net cash provided by (used in) operating activities32,636
 (5,851)(2,576) 16,106
Cash flows from investing activities:      
Purchases of investments(4,331) (19,950)(141,992) (4,331)
Proceeds from maturity/call of investments10,658
 49,633
25,319
 7,038
Purchases of property and equipment(6,880) (9,072)(7,861) (4,665)
Purchases of intangible assets(460) (431)(344) (254)
Business acquisitions(4,990) (10,629)
 (5,014)
Net cash provided by (used in) investing activities(6,003) 9,551
Net cash used in investing activities(124,878) (7,226)
Cash flows from financing activities:      
Net proceeds from equity offering233,993
 

 233,993
Proceeds from options exercised713
 1,255
104
 586
Income and payroll tax payments for net-settled stock awards(11,973) (2,830)(2,132) (10,807)
Payment of contingent consideration for a business acquisition(575) 

 (575)
Net cash provided by (used in) financing activities222,158
 (1,575)(2,028) 223,197
Effect of exchange rate changes on cash, cash equivalents and restricted cash(381) 703
(252) (538)
Net increase in cash, cash equivalents and restricted cash248,410
 2,828
Net increase (decrease) in cash, cash equivalents and restricted cash(129,734) 231,539
Cash, cash equivalents and restricted cash, beginning of period78,438
 43,969
351,027
 78,438
Cash, cash equivalents and restricted cash, end of period$326,848
 $46,797
$221,293
 $309,977
      
Supplemental disclosures:      
Cash and cash equivalents$324,371
 $43,471
$219,720
 $307,507
Restricted cash (Note 6)2,477
 3,326
Restricted cash (Note 1)1,573
 2,470
Total cash, cash equivalents and restricted cash shown in the statements of cash flows$326,848
 $46,797
$221,293
 $309,977
      
Cash paid for income taxes, net of refunds$7,957
 $12,206
$1,331
 $7,758
      
Non-cash transactions      
Property and equipment purchases in accounts payable and accrued liabilities$1,114
 $556
$91
 $665
Non-cash purchase consideration related to business combinations$12,508
 $1,007
$
 $12,288
The accompanying notes are an integral part of these condensed consolidated financial statements.


34

Table of Contents
AXON ENTERPRISE, INC.
NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS




1. Organization and Summary of Significant Accounting Policies
Axon Enterprise, Inc. (“Axon,” the “Company,” "we," or "us") is a developer and manufacturermarket-leading provider of advanced conducted electrical weapons (“CEWs”) designed for use by law enforcement military, corrections, private security personnel,technology solutions. Our core mission is to protect life. We fulfill that mission through developing hardware and by private individuals for personal defense. In addition, we have developed full technology solutions forsoftware products that advance the capture, secure storagelong term objectives of a) obsoleting the bullet, b) reducing social conflict, and management of video/audio evidence as well as other tactical capabilities for use in law enforcement. We sell our products worldwide through our direct sales force, distribution partners, online storec) enabling a fair and third-party resellers. Axon was incorporated in Arizona in September 1993, and reincorporated in Delaware in January 2001. effective justice system.

Our corporate headquarters and manufacturing facilities are located in Scottsdale, Arizona. Our mainArizona houses our executive management, sales, marketing, certain engineering, manufacturing, and other administrative support functions. We also have a software engineering development division iscenter located in Seattle, Washington, and we develop artificial intelligence technologies through our wholly-owned subsidiary in Vietnam, Axon Public Safety Southeast Asia LLC. During 2018, we established Axon Public Safety Finland OY in Tampere, Finland that operates a connected hardware team focused on the development of our hardware products. Axon Public Safety BV, a wholly owned subsidiary, supports our international sales and marketing efforts, and issubsidiaries located in Amsterdam, Netherlands. Axon Public Safety BV wholly owns two subsidiaries, Axon Public Safety U.K. Limited and Axon Public Safety Australia, Pty Ltd., that serve as direct sales operations inCanada, Finland, Hong Kong, Germany, India, Italy, the Netherlands, the United Kingdom, ("U.K.") and Australia, respectively. We also sell to certain international markets through a wholly-owned subsidiary, Axon Public Safety Germany SE, and sell into the Canadian market through our wholly-owned subsidiary, Axon Public Safety Canada, Inc.Vietnam.
The accompanying unaudited condensed consolidated financial statements include the accounts of Axon Enterprise, Inc. and our wholly owned subsidiaries. All material intercompany accounts, transactions, and profits have been eliminated.
Basis of Presentation and Use of Estimates
These unaudited condensed consolidated financial statements have been prepared pursuant to the rules and regulations of the SEC. Certain information related to our organization, significant accounting policies and footnote disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States (“U.S. GAAP”) has been condensed or omitted. The accounting policies followed in the preparation of these unaudited condensed consolidated financial statements are consistent with those followed in our annual consolidated financial statements for the year ended December 31, 20172018, as filed on Form 10-K, with the exception of our adoption of certain accounting pronouncements which we describe below and in Note 2.below. In the opinion of management, these unaudited condensed consolidated financial statements contain all material adjustments, consisting only of normal recurring adjustments, necessary to fairly state our financial position, results of operations and cash flows for the periods presented and the presentations and disclosures herein are adequate when read in conjunction with our Form 10-K for the year ended December 31, 20172018. The results of operations for the ninesix months ended SeptemberJune 30, 20182019 and 20172018 are not necessarily indicative of the results to be expected for the full year (or any other period). Significant estimates and assumptions in these unaudited condensed consolidated financial statements include:
 
product warranty reserves,
inventory valuation,
revenue recognition,
valuation of goodwill, intangible and long-lived assets,
recognition, measurement and valuation of current and deferred income taxes,
stock-based compensation,
recognition and measurement of lease liabilities,
recognition and measurement of contingencies and accrued litigation expense, and
fair values of identified tangible and intangible assets acquired and liabilities assumed in business combinations.
Actual results could differ materially from those estimates.
Segment Information
Our operations are comprised of two reportable segments: the manufacture and sale of CEWs,conducted electrical weapons ("CEWs"), batteries, accessories, extended warranties and other products and services (the “TASER Weapons”“TASER” segment); and the development, manufacture, and sale of software and sensors, business, which includes the sale of devices, wearables, applications, cloud and mobile products (collectively, the “Software and Sensors” segment). Within the Software and Sensors segment, we specify sales of products and services. Revenue from our “products” in the Software and Sensors segment are generally from sales of sensors, including on-officer body cameras, Axon Fleet cameras, other hardware sensors, warranties on sensors, and other products, and is sometimes referred to as "Sensors and Other revenue".revenue." Revenue from our “services” in the Software and Sensors segment comprise sales related to the Axon Cloud, which includes Axon Evidence, cloud-based evidence management software revenue, other recurring cloud-hosted software revenue and related professional services, and is sometimes referred to as "Axon Cloud revenue." Within the Software and Sensors segment, we include only

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revenues and costs attributable to that segment, which costs include: costs of sales for both products and services, direct labor, selling expenses for the sales team, product management and research and development ("R&D") for products included, or to be included, within the Software and Sensors segment. All other costs are included in the TASER Weapons segment.

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Our Chief Executive Officer, who is the Chief Operating Decision Maker (the “CODM”), is not provided asset information or sales, general, and administrative expense by segment. Reportable segments are determined based on discrete financial information reviewed by the CODM. We organize and review operations based on products and services. We perform an annual analysis of our reportable segments.segments on at least an annual basis. Additional information related to our business segments is summarized in Note 14.15.
Geographic Information and Major Customers / Suppliers
For the three and ninesix months ended SeptemberJune 30, 2018,2019 and for the nine months ended September 30, 20172018, no individual country outside the U.S. represented more than 10% of total net sales. For the three months ended September 30, 2017, one country, the U.K. represented more than 10% of the Company's net sales at 10.5%. Individual sales transactions in the international market are generally larger and occur more intermittently than in the domestic market due to the profile of our customers.
For the three and ninesix months ended SeptemberJune 30, 20182019 and 2017,2018, no customer represented more than 10% of total net sales. At SeptemberJune 30, 20182019 and December 31, 2017,2018, no customer represented more than 10% of the aggregate balance of accounts and notes receivable balance and contract assets.
We currently purchase both off the shelf and custom components, including, but not limited to, finished circuit boards, injection-molded plastic components, small machined parts, custom cartridge components, electronic components, and off the shelf sub-assemblies from suppliers located in the U.S., Mexico, China, Taiwan, Vietnam, Canada, Germany and Israel. Although we currently obtain many of these components from single source suppliers, we own the injection molded component tooling, most of the designs, and the test fixtures used in their production for all custom components. As a result, we believe we could obtain alternative suppliers in most cases without incurring significant production delays. We also strategically hold safety stock levels on custom components to further reduce this risk. For off the shelf components, we believe that in most cases there are readily available alternative suppliers who can consistently meet our needs for these components. We acquire most of our components on a purchase order basis and do not have any significant long-term contracts with component suppliers.
Income per Common Share
Basic income per common share is computed by dividing net income by the weighted average number of common shares outstanding during the periods presented. Potentially dilutive securities include outstanding stock options and unvested 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. Under the treasury stock method, an increase in the fair market value of our common stock can result in a greater dilutive effect from potentially dilutive securities.
The calculation of the weighted average number of shares outstanding and earnings per share are as follows (in thousands except per share data):
 Three Months Ended June 30, Six Months Ended June 30,
 2019 2018 2019 2018
Numerator for basic and diluted earnings per share:       
Net income$738
 $8,485
 $7,157
 $21,411
Denominator:       
Weighted average shares outstanding59,187
 55,527
 59,051
 54,330
Dilutive effect of stock-based awards813
 1,527
 825
 1,562
Diluted weighted average shares outstanding60,000
 57,054
 59,876
 55,892
Anti-dilutive stock-based awards excluded12,056
 3,023
 12,111
 1,533
Net income per common share:       
Basic$0.01
 $0.15
 $0.12
 $0.39
Diluted$0.01
 $0.15
 $0.12
 $0.38
 Three Months Ended September 30, Nine Months Ended September 30,
 2018 2017 2018 2017
Numerator for basic and diluted earnings per share:       
Net income$5,711
 $422
 $27,122
 $7,278
Denominator:       
Weighted average shares outstanding58,340
 52,831
 55,681
 52,663
Dilutive effect of stock-based awards1,465
 1,012
 1,573
 1,099
Diluted weighted average shares outstanding59,805
 53,843
 57,254
 53,762
Anti-dilutive stock-based awards excluded6,793
 575
 6,760
 506
Net income per common share:       
Basic$0.10
 $0.01
 $0.49
 $0.14
Diluted$0.10
 $0.01
 $0.47
 $0.14

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Standard Warranties
We warranty our CEWs, Axon cameras and certain related accessories from manufacturing defects on a limited basis for a period of one year after purchase and, thereafter, will repair or replace any defective unit for a fee. Estimated costs for the standard warranty are charged to cost of products sold when revenue is recorded for the related product. Future warranty costs are estimated

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based on historical data related to warranty claims on a quarterly basis and this rate is applied to current product sales. Historically, reserve amounts have been increased if management becomes aware of a component failure or other issue that could result in larger than anticipated warranty claims from customers. The warranty reserve is reviewed quarterly to verify that it sufficiently reflects the remaining warranty obligations based on the anticipated expenditures over the balance of the warranty obligation period, and adjustments are made when actual warranty claim experience differs from estimates. The warranty reserve is included in accrued liabilities on the accompanying condensed consolidated balance sheets. 
Changes in our estimated product warranty liabilities were as follows (in thousands):
 Six Months Ended June 30,
 2019 2018
Balance, beginning of period$898
 $644
Utilization of accrual(250) (149)
Warranty expense634
 10
Balance, end of period$1,282
 $505
 Nine Months Ended September 30,
 2018 2017
Balance, beginning of period$644
 $780
Utilization of accrual(384) (178)
Warranty expense699
 117
Balance, end of period$959
 $719

Fair Value Measurements and Financial Instruments
The fair value framework prioritizes the inputs to valuation techniques for measuring financial assets and liabilities measured on a recurring basis and for non-financial assets and liabilities when these items are re-measured. Fair value is considered to be the exchange price in an orderly transaction between market participants to sell an asset or transfer a liability at the measurement date. The hierarchy below lists three levels of fair value based on the extent to which inputs used in measuring fair value are observable in the market. We categorize each of our fair value measurements in one of these three levels based on the lowest level input that is significant to the fair value measurement in its entirety. These levels are:
 
Level 1 – Valuation techniques in which all significant inputs are unadjusted quoted prices from active markets for assets or liabilities that are identical to the assets or liabilities being measured.
Level 2 – Valuation techniques in which significant inputs include quoted prices from active markets for assets or liabilities that are similar to the assets or liabilities being measured and/or quoted prices for assets or liabilities that are identical or similar to the assets or liabilities being measured from markets that are not active. Also, model-derived valuations in which all significant inputs and significant value drivers are observable in active markets are Level 2 valuation techniques.
Level 3 – Valuation techniques in which one or more significant inputs or significant value drivers are unobservable. Unobservable inputs are valuation technique inputs that reflect our own assumptions about inputs that market participants would use in pricing an asset or liability.
We have cash equivalents and investments, which at SeptemberJune 30, 20182019 and December 31, 20172018 were comprised of money market funds state and, municipal obligations,at June 30, 2019, also included corporate bonds, and certificates of deposits.bonds. See additional disclosure regarding the fair value of our cash equivalents and investments in Note 3. Included in the balance of Otherother assets as of SeptemberJune 30, 20182019 and December 31, 20172018 was $3.9$4.0 million and $3.6 million, respectively, related to corporate-owned life insurance policies which are used to fund our deferred compensation plan. We determine the fair value of insurance contracts by obtaining the cash surrender value of the contracts from the issuer, a Level 2 valuation technique.
Our financial instruments also include accounts and notes receivable, contract assets, accounts payable and accrued liabilities. Due to theAs these instruments are generally short-term in nature, of these instruments, their carrying values approximate their fair values on the accompanying condensed consolidated balance sheets.

Restricted Cash

Restricted cash balances as of June 30, 2019 and December 31, 2018 included $0.9 million of sales proceeds related to long-term contracts with customers, which were included in prepaid expenses and other current assets on our condensed consolidated balance sheets. The proceeds are held in escrow until certain billing milestones are achieved, and then specified amounts are transferred to our operating accounts. Restricted cash balances as of June 30, 2019 and December 31, 2018 also included $0.7 million related to a performance guarantee for an international customer sales contract, which were included in other assets on our accompanying condensed consolidated balance sheets.

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Valuation of Goodwill, Intangibles and Long-lived Assets
Management evaluatesWe evaluate whether events and circumstances have occurred that indicate the remaining estimated useful life of long-lived assets and identifiable intangible assets, excluding goodwill and intangible assets with indefinite useful lives, may

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warrant revision or that the remaining balance of these assets may not be recoverable. Such circumstances could include, but are not limited to, a change in the product mix, a change in the way products are created, produced or delivered, or a significant change in the way products are branded and marketed. In performing the review for recoverability, management estimateswe estimate the future undiscounted cash flows expected to result from the use of the assets and their eventual disposition. The amount of the impairment loss, if impairment exists, is calculated based on the excess of the carrying amounts of the assets over their estimated fair value computed using discounted cash flows. During the three months ended SeptemberJune 30, 2018,2019, we abandoned certain developed technology acquired in a business combinationcapitalized software related to implementation work on an enterprise resource planning system conversion, resulting in an impairment charge of $2.0$1.3 million, which was included in sales, general and administrative expense in the accompanying condensed consolidated statementstatements of operations.
We do not amortize goodwill and intangible assets with indefinite useful lives; rather such assets are required to be tested for impairment at least annually or sooner whenever events or changes in circumstances indicate that the assets may be impaired. We perform our annual goodwill and intangible asset impairment tests in the fourth quarter of each year.
Recently Issued Accounting Guidance


Recently Adopted Accounting Pronouncements
In May 2014,February 2016, the Financial Accounting Standards Board (“FASB”("FASB") issued Accounting Standards Update (“ASU”("ASU") 2014-09, Revenue from Contracts with Customers (“ASU 2014-09”) and Accounting Standards Codification ("ASC") Subtopic 340-40, Other Assets and Deferred Costs - Contracts with Customers ("ASC 340-40"), (collectively, “Topic 606”). On January 1, 2018, we adopted Topic 606 by applying the modified retrospective method of adoption for all contracts that were not substantially completed as of the adoption date. ASU 2014-09 requires entities to recognize revenue through the application of a five-step model, which includes identification of the contract, identification of the performance obligations, determination of the transaction price, allocation of the transaction price to the performance obligations and recognition of revenue as the entity satisfies the performance obligations. Refer to Note 2 for further discussion.
In August 2016, the FASB issued ASU 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments. ASU 2016-15 eliminates the diversity in practice related to the classification of certain cash receipts and payments. ASU 2016-15 designates the appropriate cash flow classification, including requirements to allocate certain components of these cash receipts and payments among operating, investing and financing activities. We adopted ASU 2016-15 effective January 1, 2018, and the adoption of this ASU did not have a material impact on our condensed consolidated financial statements.
In October 2016, the FASB issued ASU 2016-16, Income Taxes (Topic 740) - Intra-Entity Transfers of Assets Other Than Inventory. ASU 2016-16 requires an entity to recognize income tax consequences of an intra-entity transfer of an asset other than inventory when the transfer occurs. This removes the exception to postpone recognition until the asset has been sold to an outside party. We adopted ASU 2016-16 effective January 1, 2018, and the adoption of this ASU did not have a material impact on our condensed consolidated financial statements.
In November 2016, the FASB issued ASU 2016-18, Statement of Cash Flows - Restricted Cash (Topic 230), which amends the existing guidance relating to the treatment of restricted cash and restricted cash equivalents on the statement of cash flows.  We adopted ASU 2016-18 effective January 1, 2018, and retrospectively updated the presentation of our unaudited consolidated statements of cash flows to include amounts of restricted cash with cash and cash equivalents when reconciling the beginning-of-period and end-of-period amounts.
In January 2017, the FASB issued ASU 2017-01, Business Combinations (Topic 805) to provide a more robust framework to use in determining when a set of acquired assets and activities is a business. The amendments in ASU 2017-01 provide a screen to determine when a set of acquired integrated assets and activities is not a business, and if the screen is not met it may result in fewer transactions that qualify as a business combination under ASC Topic 805. We adopted ASU 2017-01 effective January 1, 2018, and the adoption of this ASU did not have a material impact on our condensed consolidated financial statements.
In May 2017, the FASB issued ASU 2017-09, Compensation - Stock Compensation (Topic 718), which provides guidance on determining which changes to the terms and conditions of share-based payment awards require an entity to apply modification accounting under Topic 718. We adopted ASU 2017-09 effective January 1, 2018, and the adoption of this ASU did not have a material impact on our condensed consolidated financial statements.

In September 2018, the FASB issued ASU 2018-15, Intangibles—Goodwill and Other—Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract. The guidance reduces complexity for the accounting for costs of implementing a cloud computing service arrangement and  aligns

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the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software (and hosting arrangements that include an internal use software license).  The accounting for the service element of a hosting arrangement that is a service contract is not affected by the amendments. We adopted ASU 2018-15 prospectively effective July 1, 2018, and the adoption of this ASU did not have a material impact on our condensed consolidated financial statements.

Effective the first quarter of 2019:
In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842), which is intended to increase transparency and comparability among organizations by requiring the recognition of right-of-use (“ROU”) assets and lease liabilities on the balance sheet. In July 2018, the FASB issued additional guidance which provided an additional transition method for adopting the updated guidance.  Under the additional transition method, entities may elect to recognize a cumulative-effect adjustment to the opening balance of retained earnings in the year of adoption. We currently plan to adopt this standard using this modified retrospective approach.
Most prominent among the changes in the standard is the requirement for lessees to recognize ROU assets and lease liabilities for those leases that were classified as operating leases under currentprevious U.S. GAAP. TheOn January 1, 2019, we adopted Topic 842 by applying the non-comparative modified retrospective method of adoption. Under this method, financial information related to periods prior to adoption will be as originally reported under the then-current standard requires additional disclosures(Topic 840, Leases).

Results for reporting periods beginning on or after January 1, 2019 are presented under Topic 842, while prior period amounts are not adjusted, and continue to enable usersbe reported in accordance with our historic accounting under Topic 840. We elected to apply the package of financial statements to assess the amount, timing, and certainty of cash flows arising from leases. We intend to elect certain of the available practical expedients upon adoption. We have evaluatedto not reassess whether a contract is or contains a lease, lease classification, or initial lease costs for all leases that commenced before the adoption date.

The adoption had a material impact to our existing lease portfolio and believe that our population of leases is relatively low in number. We have implemented key processes and controls to enable the accurate assessment of leases and preparation of related financial information.
We are nearing completion of the openingcondensed consolidated balance sheet adjustment related to ASU 2016-02. We expect adoption of the standard will result insheet. The most significant impact was the recognition of ROU assets of between $10 million and $12 million and lease liabilities of between $11 million and $13 million for operating leases, as of January 1, 2019, with no impact to retained earnings. Additionally, we anticipate thatwhile our accounting for capitalfinance leases will remainremained substantially unchanged. There was no other impact from the adoption. The adjustments to the opening balance sheet were as follows (in thousands):
 December 31, 2018 Impact of Adoption of Topic 842 on Opening Balance Sheet January 1, 2019
 (As reported)  (As adjusted)
Consolidated Balance Sheet Data:     
Other assets$22,999
 $12,483
 $35,482
Total assets719,540
 12,483
 732,023
     
Accrued liabilities41,092
 (1,138) 39,954
Other current liabilities37
 3,588
 3,625
Total current liabilities166,011
 2,450
 168,461
Other long-term liabilities5,704
 10,033
 15,737
Total liabilities252,216
 12,483
 264,699
Total liabilities and stockholders' equity719,540
 12,483
 732,023



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See Note 11 for further disclosures related to Topic 842.
In June 2018, the FASB issued ASU 2018-07, Compensation - Stock Compensation (Topic 718), expanding the scope of Topic 718 to include share-based payment transactions for acquiring goods and services from nonemployees. TheWe adopted this standard on January 1, 2019 and the adoption of this ASU is not expected to have a materialhad no impact on our condensed consolidated financial statements.


Effective the first quarter of 2020:
 
In June 2016, the FASB issued ASU 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments. ASU 2016-13 includes an impairment model (known as the current expected credit loss model) on financial instruments and other commitments that is based on expected losses rather than incurred losses. Under the new guidance, an entity recognizes as an allowance its estimate of expected credit losses, which the FASB believes will result in more timely recognition of such losses. The use of forecasted information is intended to incorporate more timely information in the estimate of expected credit loss. Early adoption is permitted.WeThis ASU will also require enhanced disclosures relating to significant estimates and judgments used in estimating credit losses, as well as credit quality. We are currently in the process of evaluating the impact of adoption of ASU 2016-13 on our condensed consolidated financial statements.investments, accounts and notes receivable, and contract assets.


In August 2018, the FASB issued ASU 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework—Changes to the Disclosure Requirements for Fair Value Measurement. ASU 2018-13 eliminates, adds and modifies certain disclosure requirements for fair value measurements. The amendments apply to the disclosures of changes in unrealized gains and losses, the range and weighted average of significant unobservable inputs used to develop Level 3 fair value measurements, and the narrative description of measurement uncertainty should be applied prospectively for only the most recent interim or annual period presented in the initial year of adoption. All other amendments should be applied retrospectively to all periods presented upon their effective date. Early adoption is permitted, and an entity is also permitted to early adopt any removed or modified disclosures and delay adoption of the additional disclosures until their effective date. AsAdoption of this ASU 2018-13 only revises disclosure requirements, it willis not expected to have a material impact on our condensed consolidated financial statements.
Reclassification of Prior Year Presentation
Certain prior year amounts have been reclassified for consistency with the current year presentation. These reclassifications had no effect on the reported results of operations.

2. Revenues
Adoption of ASC Topic 606, "Revenue from Contracts with Customers"
On January 1, 2018, we adopted Topic 606 using the modified retrospective method applied to those contracts which were not completed as of January 1, 2018. Results for reporting periods beginning after January 1, 2018 are presented under Topic 606, while prior period amounts are not adjusted, and continue to be reported in accordance with our historic accounting under ASC 605. We recorded a net increase in stockholders’ equity (retained earnings) of $19.0 million as of January 1, 2018 due to the cumulative impact of adopting Topic 606 on contracts that were not complete as of that date. The areas most significantly impacted were contracts with contingent hardware revenue and the treatment of incremental costs of obtaining contracts with customers.
The impacts as a result of applying Topic 606 were a net increase to net sales of $2.1 million and $4.4 million, respectively, for the three and nine months ended September 30, 2018, and a net decrease to sales, general and administrative expenses of approximately $0.4 million and $2.0 million, respectively, related to the costs of obtaining contracts for the same periods, as compared to what would have been recognized under ASC 605. The impacts to the December 31, 2017 balance sheet of adopting Topic 606 are presented below (in thousands):
 December 31, 2017
(As reported)
 Impact of Adoption
of Topic 606 on
Opening Balance Sheet
 January 1, 2018
(As adjusted)
Accounts and notes receivable, net$56,064
 $28,915
 $84,979
Contract assets, net
 5,512
 5,512
Prepaid expense and other current assets21,696
 2,003
 23,699
Total impacted current assets77,760
 36,430
 114,190
Deferred income tax assets, net15,755
 (5,158) 10,597
Long-term notes receivable36,877
 (12,977) 23,900
Other assets15,366
 5,323
 20,689
Total impacted assets145,758
 23,618
 169,376
      
Accrued liabilities23,502
 2,512
 26,014
Current portion of deferred revenue70,401
 863
 71,264
Total impacted current liabilities93,903
 3,375
 97,278
Deferred revenue, net of current portion54,881
 1,249
 56,130
Total impacted liabilities148,784
 4,624
 153,408
Retained earnings123,185
 18,994
 142,179
Total impacted stockholders' equity123,185
 18,994
 142,179
Total impacted liabilities and stockholders' equity271,969
 23,618
 295,587
Revenue Recognition
Revenues are recognized upon transfer of control of promised products or services to customers in an amount that reflects the consideration we expect to receive in exchange for those products or services. We enter into contracts that can include various combinations of products and services, each of which is generally distinct and accounted for as a separate performance obligation. Revenue is recognized net of allowances for returns and any taxes collected from customers, which are subsequently remitted to governmental taxing authorities.
A performance obligation is a promise in a contract to transfer a distinct good or service to the customer, and is the unit of account in Topic 606. For contracts with multiple performance obligations, we allocate the contract transaction price to each performance obligation using our estimate of the standalone selling price ("SSP") of each distinct good or service in the contract.
Performance obligations to deliver products, including CEWs, cameras and related accessories such as cartridges, batteries and docks, are generally satisfied at the point in time we ship the product, as this is when the customer obtains control of the asset under our standard terms and conditions. In certain contracts with non-standard terms and conditions, these performance obligations may not be satisfied until formal customer acceptance occurs. Performance obligations to fulfill service-type extended warranties and provide our Software-as-a-Service (“SaaS”) offerings, including Axon Evidence and other cloud services, are generally satisfied over time as the customer receives and consumes the benefits of these services over the stated service period.

We have elected to recognize shipping costs as an expense in cost of product sales when the control of hardware products or accessories have transferred to the customer.
Nature of Products and Services
The following table presentstables present our revenues by primary product and service offering (in thousands):
Three Months Ended September 30, 2018 
Three Months Ended September 30, 2017 (1)
Three Months Ended June 30, 2019 Three Months Ended June 30, 2018
TASER Weapons Software and Sensors Total TASER Weapons Software and Sensors TotalTASER Software and Sensors Total TASER Software and Sensors Total
TASER 7$9,298
 $
 $9,298
 $
 $
 $
TASER X26P$17,998
 $
 $17,998
 $13,264
 $
 $13,264
10,382
 
 10,382
 18,146
 
 18,146
TASER X220,392
 
 20,392
 22,717
 
 22,717
14,087
 
 14,087
 18,362
 
 18,362
TASER Pulse and Bolt1,402
 
 1,402
 1,069
 
 1,069
1,118
 
 1,118
 1,101
 
 1,101
Single cartridges18,406
 
 18,406
 17,474
 
 17,474
19,293
 
 19,293
 17,243
 
 17,243
Axon Body
 4,744
 4,744
 
 4,527
 4,527

 5,612
 5,612
 
 4,780
 4,780
Axon Flex
 1,325
 1,325
 
 2,563
 2,563

 1,623
 1,623
 
 1,535
 1,535
Axon Fleet
 1,809
 1,809
 
 1,113
 1,113

 3,120
 3,120
 
 2,715
 2,715
Axon Dock
 2,178
 2,178
 
 2,639
 2,639

 2,731
 2,731
 
 2,119
 2,119
Axon Evidence and cloud services
 23,915
 23,915
 
 16,200
 16,200
109
 31,821
 31,930
 
 20,357
 20,357
TASER Cam
 717
 717
 
 922
 922

 1,044
 1,044
 
 762
 762
Extended warranties4,123
 3,161
 7,284
 3,086
 1,945
 5,031
4,482
 4,420
 8,902
 3,738
 2,870
 6,608
Other1,345
 3,321
 4,666
 1,806
 937
 2,743
1,803
 1,419
 3,222
 2,034
 3,464
 5,498
Total$63,666
 $41,170
 $104,836
 $59,416
 $30,846
 $90,262
$60,572
 $51,790
 $112,362
 $60,624
 $38,602
 $99,226


Nine Months Ended September 30, 2018 
Nine Months Ended September 30, 2017 (1)
Six Months Ended June 30, 2019 Six Months Ended June 30, 2018
TASER Weapons Software and Sensors Total TASER Weapons Software and Sensors TotalTASER Software and Sensors Total TASER Software and Sensors Total
TASER 7$19,252
 $
 $19,252
 $
 $
 $
TASER X26P$52,618
 $
 $52,618
 $45,167
 $
 $45,167
26,254
 
 26,254
 34,620
 
 34,620
TASER X262,686
 
 62,686
 57,755
 
 57,755
27,172
 
 27,172
 42,294
 
 42,294
TASER Pulse and Bolt3,849
 
 3,849
 2,892
 
 2,892
1,788
 
 1,788
 2,447
 
 2,447
Single cartridges51,763
 
 51,763
 49,005
 
 49,005
38,453
 
 38,453
 33,357
 
 33,357
Axon Body
 15,082
 15,082
 
 11,725
 11,725

 12,057
 12,057
 
 10,338
 10,338
Axon Flex
 4,529
 4,529
 
 7,889
 7,889

 2,847
 2,847
 
 3,204
 3,204
Axon Fleet
 6,640
 6,640
 
 1,113
 1,113

 6,636
 6,636
 
 4,831
 4,831
Axon Dock
 7,332
 7,332
 
 7,409
 7,409

 6,043
 6,043
 
 5,154
 5,154
Axon Evidence and cloud services
 64,513
 64,513
 
 40,698
 40,698
145
 59,439
 59,584
 
 40,598
 40,598
TASER Cam
 2,839
 2,839
 
 2,407
 2,407

 1,947
 1,947
 
 2,122
 2,122
Extended warranties11,567
 8,521
 20,088
 8,920
 4,982
 13,902
8,798
 9,350
 18,148
 7,444
 5,360
 12,804
Other5,331
 8,007
 13,338
 6,364
 2,821
 9,185
4,101
 3,890
 7,991
 3,986
 4,686
 8,672
Total$187,814
 $117,463
 $305,277
 $170,103
 $79,044
 $249,147
$125,963
 $102,209
 $228,172
 $124,148
 $76,293
 $200,441
(1) Amounts for the three and nine months ended September 30, 2017 have not been adjusted under the modified retrospective method of adoption of Topic 606, and are presented consistent with the prior period amounts reported under ASC 605.

We derive revenue from two primary sources: (1) the sale of physical products, including CEWs, cameras, Axon Signal enabled devices, corresponding hardware extended warranties, and related accessories such as Axon docks, cartridges and batteries, among others, and (2) subscription to our Axon Evidence digital evidence management SaaS (including secure cloud-based storage fees and other ancillary services), which includes varying levels of support. To a lesser extent, we also recognize revenue from training, professional services and revenue related to other software and cloud services.

Many of our products and services are sold on a standalone basis. We also bundle our hardware products and services together and sell them to our customers in single transactions, where the customer can make payments over a multi-year period. These sales may include payments for upfront hardware and services, as well as payments for hardware and services to be provided by us at a future date. Additionally, we offer customers the ability to purchase CEW cartridges and certain services on an unlimited basis over the contractual term. Due to the unlimited nature of these arrangements whereby we are obligated to deliver unlimited products at the customer’s request, we account for these arrangements as stand-ready obligations, and recognize revenue ratably over the contract period. Cost of product sales is recognized as the products are shipped to the customer.
The following table presents our revenues disaggregated by geography (in thousands):
 Three Months Ended June 30, Six Months Ended June 30,
 2019 2018 2019 2018
United States$93,594
 83% $78,731
 79% $187,927
 82% $156,681
 78%
Other countries18,768
 17
 20,495
 21
 40,245
 18
 43,760
 22
Total$112,362
 100% $99,226
 100% $228,172
 100% $200,441
 100%

 Three Months Ended September 30, Nine Months Ended September 30,
 2018 
2017 (1)
 2018 
2017 (1)
United States$88,125
 84% $73,203
 81% $244,806
 80% $204,155
 82%
Other countries16,711
 16
 17,059
 19
 60,471
 20
 44,992
 18
Total$104,836
 100% $90,262
 100% $305,277
 100% $249,147
 100%
(1) Amounts for the three and nine months ended September 30, 2017 have not been adjusted under the modified retrospective method of adoption of Topic 606, and are presented consistent with the prior period amounts reported under ASC 605.
Contract Balances
The timing of revenue recognition may differ from the timing of invoicing to customers. We generally have an unconditional right to consideration when we invoice our customers and record a receivable. We record a contract asset when revenue is recognized prior to invoicing, or a contract liability (deferred revenue) when revenue will be recognized subsequent to invoicing.
Contract assets generally result from our subscription programs where we satisfy a hardware performance obligation upon shipment to the customer, and the right to the portion of the transaction price allocated to that hardware performance obligation is conditional on our future performance of a SaaS service obligation under the contract. We recognize a portion of the amount allocated to hardware products shipped to the customer as accounts receivable when invoiced to the customer, and record the remaining allocated value as a contract asset as we have generally fulfilled our hardware performance obligation upon shipment.
Contract liabilities generally consist of deferred revenue on our subscription programs where we generally invoice customers at the beginning of each annual period and record a receivable at the time of invoicing when there is an unconditional right to consideration.
Deferred revenue is comprised mainly of unearned revenue related to our Axon Evidence SaaS platform, secure cloud-based storage, service-type extended warranties, stand-ready obligations in our cartridge programs, and rights to future CEW, camera and related accessories hardware in our subscription programs. Revenue for Axon Evidence and cloud-based storage, our service-type extended warranties and stand-ready cartridge programs is generally recognized on a straight-line basis over the subscription term. Revenue for the rights to future hardware is generally recognized at the point in time the hardware products are shipped to the customer.

Payment terms and conditions vary by contract type and geography, but our standard terms are that payments are due within 30 days from the date of invoice.
The following table presents our contract assets, contract liabilities and certain information related to these balances as of and for the ninethree months ended SeptemberJune 30, 20182019 (in thousands):
 June 30, 2019
Contract assets, net$26,908
Contract liabilities (deferred revenue)187,937
Revenue recognized in the period from: 
Amounts included in contract liabilities at the beginning of the period58,302
 September 30, 2018
Contract assets, net$13,263
Contract liabilities (deferred revenue)159,019
Revenue recognized in the period from: 
Amounts included in contract liabilities at the beginning of the period63,475



Contract liabilities (deferred revenue) consisted of the following (in thousands):
September 30, 2018 
December 31, 2017 (1)
June 30, 2019 December 31, 2018
Current Long-Term Total Current Long-Term TotalCurrent Long-Term Total Current Long-Term Total
Warranty:                      
TASER Weapons$11,256
 $18,085
 $29,341
 $12,501
 $18,619
 $31,120
TASER$11,110
 $16,450
 $27,560
 $12,797
 $16,847
 $29,644
Software and Sensors8,525
 5,195
 13,720
 6,293
 4,195
 10,488
9,514
 4,898
 14,412
 8,273
 6,516
 14,789
19,781
 23,280
 43,061
 18,794
 22,814
 41,608
20,624
 21,348
 41,972
 21,070
 23,363
 44,433
Hardware:                      
TASER Weapons7,389
 15,927
 23,316
 4,164
 11,401
 15,565
TASER3,315
 15,844
 19,159
 9,355
 15,598
 24,953
Software and Sensors17,681
 19,833
 37,514
 16,956
 14,781
 31,737
35,443
 23,500
 58,943
 20,878
 24,685
 45,563
25,070
 35,760
 60,830
 21,120
 26,182
 47,302
38,758
 39,344
 78,102
 30,233
 40,283
 70,516
Software and Sensors Services44,786
 10,342
 55,128
 30,487
 5,885
 36,372
Services:           
TASER77
 350
 427
 
 
 
Software and Sensors53,892
 13,544
 67,436
 55,713
 10,771
 66,484
53,969
 13,894
 67,863
 55,713
 10,771
 66,484
Total$89,637
 $69,382
 $159,019
 $70,401
 $54,881
 $125,282
$113,351
 $74,586
 $187,937
 $107,016
 $74,417
 $181,433


 June 30, 2019 December 31, 2018
 Current Long-Term Total Current Long-Term Total
TASER$14,502
 $32,644
 $47,146
 $22,152
 $32,445
 $54,597
Software and Sensors98,849
 41,942
 140,791
 84,864
 41,972
 126,836
Total$113,351
 $74,586
 $187,937
 $107,016
 $74,417
 $181,433
 September 30, 2018 
December 31, 2017 (1)
 Current Long-Term Total Current Long-Term Total
TASER Weapons$18,645
 $34,012
 $52,657
 $16,665
 $30,020
 $46,685
Software and Sensors70,992
 35,370
 106,362
 53,736
 24,861
 78,597
Total$89,637
 $69,382
 $159,019
 $70,401
 $54,881
 $125,282
(1) Amounts as of December 31, 2017 have not been adjusted under the modified retrospective method of adoption of Topic 606, and are presented consistent with the prior period amounts reported under ASC 605.
Remaining Performance Obligations
As of SeptemberJune 30, 2018,2019, we had approximately $820 million$1.05 billion of remaining performance obligations, which included both recognized contract liabilities as well as amounts that will be invoiced and recognized in future periods. The remaining performance obligations are limited only to arrangements that meet the definition of a contract under Topic 606 as of SeptemberJune 30, 2018.2019. We expect to recognize between 15% - 20% of this balance over the next twelve months, and generally expect the remainder to be recognized over the following five to seven years, subject to risks related to delayed deployments, budget appropriation or other contract cancellation clauses.
Costs to Obtain a Contract
We recognize an asset for the incremental costs of obtaining a contract with a customer, which consist primarily of sales commissions. These costs are ascribed to or allocated to the underlying performance obligations in the contract and amortized consistent with the recognition timing of the revenue for the underlying performance obligations.
For contract costs related to performance obligations with an amortization period of one year or less, we apply the practical expedient to expense these sales commissions when incurred. These costs are recognized as incurred within sales, general and administrative expenses on the accompanying condensed consolidated statement of operations and comprehensive income.
As of September 30, 2018, our assets for costs to obtain contracts were as follows (in thousands):
 September 30, 2018
Current deferred commissions (1)
$6,207
Deferred commissions, net of current portion (2)
14,175
 $20,382
(1) Current deferred commissions are included within prepaid expenses and other current assets on the accompanying condensed consolidated balance sheet.
(2) Deferred commissions, net of current portion, are included in other assets on the accompanying condensed consolidated balance sheet.
During the three and nine months ended September 30, 2018, we recognized $1.5 million and $3.8 million, respectively, of

amortization related to deferred commissions. These costs are recorded within sales, general and administrative expenses on the accompanying condensed consolidated statement of operations and comprehensive income.
Significant Judgments
Our contracts with certain municipal government customers may be subject to budget appropriation, other contract cancellation clauses or future periods which are optional. In contracts where the customer’s performance is subject to budget appropriation clauses, we generally consider the likelihood of non-appropriation to be remote when determining the contract term and transaction price. Contracts with other cancellation provisions or optional periods may require judgment in determining the contract term, including the existence of material rights, transaction price and identifying the performance obligations.
At times, customers may request changes that either amend, replace or cancel existing contracts. Judgment is required to determine whether the specific facts and circumstances within the contracts require the changes to be accounted for as a separate contract or as a modification. Generally, contract modifications containing additional goods and services that are determined to be distinct and sold at their SSP are accounted for as a separate contract. For contract modifications where both criteria are not met, the original contract is updated and the required adjustments to revenue and contract assets, liabilities, and other accounts will be made accordingly.
Our contracts with customers often include promises to transfer multiple products and services to a customer. Determining whether products and services are considered distinct performance obligations that should be accounted for separately rather than together may require significant judgment. We consider CEW devices and related accessories, as well as cameras and related accessories, to be separately identifiable from each other as well as from extended warranties on these products and the SaaS subscriptions to Axon Evidence and other cloud services.
In contracts where there are timing differences between when we transfer a promised good or service to the customer and when the customer pays for that good or service, we have determined that, with the exception of our TASER 60 installment purchase arrangements, our contracts generally do not include a significant financing component. For the three and nine months ended September 30, 2018, we recorded revenue of $11.9 million and $36.1 million, respectively, including $0.4 million and $1.0 million, respectively, of interest income under our TASER 60 plan. For the three and nine months ended September 30, 2017, we recorded revenue of $7.5 million and $20.8 million, respectively, including $0.2 million and $0.5 million, respectively, of interest income under our TASER 60 plan. Amounts for the three and nine months ended September 30, 2017 have not been adjusted under the modified retrospective method of adoption of Topic 606.
Judgment is required to determine the SSP for each distinct performance obligation.We analyze separate sales of our products and services as a basis for estimating the SSP of our products and services and then use that SSP as the basis for allocating the transaction price when our products and services are sold together in a contract with multiple performance obligations. In instances where the SSP is not directly observable, such as when we do not sell the product or service separately, we determine the SSP using information that may include market conditions, time value of money and other observable inputs. We typically have more than one SSP for individual products and services due to the stratification of those products and services by customers and circumstances. In these instances, we may use information such as geographic region and distribution channel in determining the SSP.
Sales are typically made on credit and we generally do not require collateral. We perform ongoing credit evaluations of our customers’ financial condition and maintain an allowance for doubtful accounts. Uncollectible accounts are written off when deemed uncollectible, and accounts and notes receivable are presented net of an allowance for doubtful accounts. This allowance represents our best estimate and is based on our judgment after considering a number of factors including third-party credit reports, actual payment history, customer-specific financial information and broader market and economic trends and conditions. In the event that actual uncollectible amounts differ from our estimates, additional expense could be necessary.

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NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS – (Continued)






3. Cash, Cash Equivalents and Investments
The following tables summarize our cash, cash equivalents, and held-to-maturity investments at SeptemberJune 30, 20182019 and December 31, 20172018 (in thousands):
As of September 30, 2018As of June 30, 2019
Amortized Cost Gross Unrealized Losses Fair Value Cash and Cash Equivalents Short-Term InvestmentsAmortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Cash and Cash Equivalents Short-Term Investments
Cash$120,539
 $
 $120,539
 $120,539
 $
$129,347
 $
 $
 $129,347
 $129,347
 $
                    
Level 1:                    
Money market funds203,832
 
 203,832
 203,832
 
88,375
 
 
 88,375
 88,375
 
                    
Level 2:                    
Corporate bonds500
 
 500
 
 500
118,627
 44
 (5) 118,666
 1,998
 116,629
Total$324,871
 $
 $324,871
 $324,371
 $500
$336,349
 $44
 $(5) $336,388
 $219,720
 $116,629


 As of December 31, 2018
 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Cash and Cash Equivalents Short-Term Investments
Cash$144,095
 $
 $
 $144,095
 $144,095
 $
            
Level 1:           
Money market funds205,367
 
 
 205,367
 205,367
 
Total$349,462
 $
 $
 $349,462
 $349,462
 $
 As of December 31, 2017
 Amortized Cost Gross Unrealized Losses Fair Value Cash and Cash Equivalents Short-Term Investments
Cash$53,459
 $
 $53,459
 $53,459
 $
          
Level 1:         
Money market funds20,884
 
 20,884
 20,884
 
Corporate bonds6,632
 (6) 6,626
 
 6,632
Subtotal27,516
 (6) 27,510
 20,884
 6,632
          
Level 2:         
State and municipal obligations992
 
 992
 762
 230
Total$81,967
 $(6) $81,961
 $75,105
 $6,862

We believe unrealized losses on our investments are due to interest rate fluctuations. As these investments are short-term in nature, are expected to be redeemed at par value, and/or because we have the ability and intent to hold these investments to maturity, we do not consider these investments to be other than temporarily impaired as of December 31, 2017.June 30, 2019.
4. Inventory
Inventories are stated at the lower of cost and net realizable value. Cost is determined using the weighted average cost of raw materials, which approximates the first-in, first-out (“FIFO”) method and includes allocations of manufacturing labor and overhead. Included in finished goods at SeptemberJune 30, 20182019 and December 31, 20172018 was $1.7 million and $1.4 million, respectively, of trial and evaluation hardware units. Provisions are made to reduce excess, obsolete or slow-moving inventories to their net realizable value. Inventory consisted of the following at SeptemberJune 30, 20182019 and December 31, 20172018 (in thousands):
 June 30, 2019 December 31, 2018
Raw materials$21,784
 $19,670
Finished goods19,215
 14,093
Total inventory$40,999
 $33,763

 September 30, 2018 December 31, 2017
Raw materials$19,942
 $20,119
Finished goods19,279
 25,346
Total inventory$39,221
 $45,465


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NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS – (Continued)







5. Goodwill and Intangible Assets


The changes in the carrying amount of goodwill for the ninesix months ended SeptemberJune 30, 20182019 were as follows (in thousands):
 TASER Software and Sensors Total
Balance, beginning of period$1,338
 $23,643
 $24,981
Foreign currency translation adjustment(6) (6) (12)
Balance, end of period$1,332
 $23,637
 $24,969

 TASER
Weapons
 Software and Sensors Total
Balance, beginning of period$1,453
 $13,474
 $14,927
Goodwill acquired
 10,285
 10,285
Foreign currency translation adjustment(84) (85) (169)
Balance, end of period$1,369
 $23,674
 $25,043


Intangible assets (other than goodwill) consisted of the following (in thousands):
   June 30, 2019 December 31, 2018
 
Useful
Life
 
Gross
Carrying
Amount
 
Accumulated
Amortization
 
Net
Carrying
Amount
 
Gross
Carrying
Amount
 
Accumulated
Amortization
 
Net
Carrying
Amount
Amortizable (definite-lived) intangible assets:          
Domain names5-10 years $3,161
 $(884) $2,277
 $3,161
 $(732) $2,429
Issued patents4-15 years 2,993
 (1,212) 1,781
 2,940
 (1,106) 1,834
Issued trademarks3-11 years 969
 (511) 458
 1,053
 (599) 454
Customer relationships4-8 years 3,697
 (1,155) 2,542
 3,701
 (880) 2,821
Non-compete agreements3-4 years 450
 (394) 56
 540
 (439) 101
Developed technology3-7 years 10,660
 (5,435) 5,225
 13,404
 (7,081) 6,323
Re-acquired distribution rights2 years 2,006
 (2,006) 
 1,928
 (1,813) 115
Total amortizable  23,936
 (11,597) 12,339
 26,727
 (12,650) 14,077
Not amortizable (indefinite-lived) intangible assets:          
TASER trademark  900
   900
 900
   900
Patents and trademarks pending  1,185
   1,185
 958
   958
Total not amortizable  2,085
   2,085
 1,858
   1,858
Total intangible assets  $26,021
 $(11,597) $14,424
 $28,585
 $(12,650) $15,935
   September 30, 2018 December 31, 2017
 
Useful
Life
 
Gross
Carrying
Amount
 
Accumulated
Amortization
 
Net
Carrying
Amount
 
Gross
Carrying
Amount
 
Accumulated
Amortization
 
Net
Carrying
Amount
Amortized:             
Domain names5-10 years $3,161
 $(656) $2,505
 $3,161
 $(428) $2,733
Issued patents4-15 years 2,916
 (1,054) 1,862
 2,697
 (913) 1,784
Issued trademarks3-11 years 1,052
 (567) 485
 860
 (397) 463
Customer relationships4-8 years 3,724
 (755) 2,969
 1,377
 (451) 926
Non-compete agreements3-4 years 545
 (423) 122
 556
 (346) 210
Developed technology3-7 years 15,449
 (8,573) 6,876
 13,469
 (3,956) 9,513
Re-acquired distribution rights2 years 1,973
 (1,644) 329
 2,133
 (711) 1,422
Total amortized  28,820
 (13,672) 15,148
 24,253
 (7,202) 17,051
Not amortized:             
TASER trademark  900
   900
 900
   900
Patents and trademarks pending  908
   908
 872
   872
Total not amortized  1,808
   1,808
 1,772
   1,772
Total intangible assets  $30,628
 $(13,672) $16,956
 $26,025
 $(7,202) $18,823

During the three months ended September 30, 2018, we abandoned certain developed technology acquired in a business combination resulting in an impairment charge of approximately $2.0 million.

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AXON ENTERPRISE, INC.
NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS – (Continued)



Amortization expense of intangible assets for the three and ninesix months ended SeptemberJune 30, 20182019 was $1.6$0.9 million and $4.6$1.9 million, respectively. Amortization expense of intangible assets for the three and ninesix months ended SeptemberJune 30, 20172018 was $1.4$1.7 million and $3.3$3.0 million, respectively. Estimated amortization for intangible assets with definite lives for the remaining threesix months of 2018,2019, the next five years ended December 31, and thereafter, is as follows (in thousands):
2019 Remaining$1,653
20203,300
20212,852
20221,251
2023954
2024872
Thereafter1,457
Total$12,339


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AXON ENTERPRISE, INC.
NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS – (Continued)



2018$1,209
20193,357
20203,296
20212,854
20221,200
20231,393
Thereafter1,839
Total$15,148

6. Other Assets
Other assets consisted of the following at SeptemberJune 30, 20182019 and December 31, 20172018 (in thousands):
September 30, 2018 December 31, 2017June 30, 2019 December 31, 2018
Cash surrender value of corporate-owned life insurance policies$3,949
 $3,846
$4,018
 $3,596
Deferred commissions (1)
14,175
 6,803
16,597
 15,530
Restricted cash (2)
2,477
 3,333
660
 661
Operating lease assets10,770
 
Prepaid expenses, deposits and other2,795
 1,384
3,549
 3,212
Total other long-term assets$23,396
 $15,366
$35,594
 $22,999
(1) Represents assets for the incremental costs of obtaining contracts with customers, which consist primarily of sales commissions. These costs are ascribed to or allocated to the underlying performance obligations in the contracts and amortized consistent with the recognition timing of the revenue for the underlying performance obligations. The amounts as of December 31, 2017 have not been adjusted under the modified retrospective method of adoption of Topic 606, and are presented consistent with the prior period amounts. In connection with our adoption of Topic 606, we recorded an adjustment of $7.3 million as of January 1, 2018, and of that amount, $5.4 million was recorded within other assets. The adjusted balance of long-term deferred commissions as of January 1, 2018 was $12.2 million.
(2) As of September 30, 2018 and December 31, 2017, restricted cash primarily consisted of $1.8 million and $2.7 million, respectively, of sales proceeds related to long-term contracts with customers. As of September 30, 2018, the proceeds are held in escrow until certain billing milestones are achieved, and then specified amounts are transferred to our operating accounts.
7. Accrued Liabilities
Accrued liabilities consisted of the following at SeptemberJune 30, 20182019 and December 31, 20172018 (in thousands):
 June 30, 2019 December 31, 2018
Accrued salaries, benefits and bonus$15,106
 $19,063
Accrued professional, consulting and lobbying fees4,688
 4,894
Accrued warranty expense1,282
 898
Accrued income and other taxes3,448
 4,167
Other accrued liabilities9,487
 12,070
Accrued liabilities$34,011
 $41,092

 2018 2017
Accrued salaries, benefits and bonus$15,057
 $8,957
Accrued professional, consulting and lobbying fees2,910
 3,870
Accrued warranty expense959
 644
Accrued income and other taxes4,913
 2,558
Other accrued liabilities13,069
 7,473
Accrued liabilities$36,908
 $23,502

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AXON ENTERPRISE, INC.
NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS – (Continued)


8. Income Taxes
ASC 740 requires a company to record the effects of a tax law change in the period of enactment; however, shortly after the enactment of the Tax Cuts and Jobs Act (the "Tax Act"), the SEC staff issued Staff Accounting Bulletin 118 ("SAB 118"), which allows a company to record a provisional amount when it does not have the necessary information available, prepared, or analyzed in reasonable detail to complete its accounting for the change in the tax law. The measurement period ends when the company has obtained, prepared and analyzed the information necessary to finalize its accounting, but cannot extend beyond one year. We continue to analyze the impact of the Tax Act and expect that as additional guidance from IRS Treasury is provided, further updates will be necessary.
The Tax Act imposes a U.S. entity tax on global intangible low-taxed income ("GILTI") earned by certain foreign subsidiaries. The FASB Staff Q&A, Topic 740, No. 5, Accounting for Global Intangible Low-Taxed Income, states that an entity can make an accounting policy election to either recognize deferred taxes for temporary basis differences expected to reverse as GILTI in future years or provide for the tax expense related to GILTI in the year the tax is incurred as a period expense only. Given the complexity of the GILTI provisions, we are still evaluating the effects of the GILTI provisions and have not yet determined our accounting policy. At September 30, 2018, because we are still evaluating the GILTI provisions and our analysis of future taxable income that is subject to GILTI, we have included GILTI related to current-year operations only in our EAETR (estimated annual effective tax rate) and have not provided additional GILTI on deferred items.


We file income tax returns for federal purposes and in many states, as well as in multiple foreign jurisdictions. Our tax filings remain subject to examination by applicable tax authorities for a certain length of time, generally three to four years, following the tax year to which these filings relate. Our U.S. federal income tax return for fiscal year 2016 is currently under audit by the Internal Revenue Service.


Deferred Tax Assets
Net deferred income tax assets at SeptemberJune 30, 2018,2019, primarily include capitalized R&D costs, R&D tax credits, stock-based compensation expense, deferred revenue, warrantyaccruals and inventory reserves, accrued vacation, and other items,net operating losses, partially offset by accelerated depreciation expense and intangible amortization that is not tax deductible.valuation allowance reserve. Our total net deferred tax assets at SeptemberJune 30, 20182019 were $18.1$20.7 million.
In preparing our condensed consolidated financial statements, management assesses the likelihood that its deferred tax assets will be realized from future taxable income. In evaluating our ability to recover our deferred income tax assets, management considers all available positive and negative evidence, including our operating results, ongoing tax planning and forecasts of future taxable income on a jurisdiction by jurisdiction basis. A valuation allowance is established if it is determined that it is more likely than not that some portion or all of the net deferred tax assets will not be realized. Management exercises significant judgment in determining our provisions for income taxes, our deferred tax assets and liabilities, and our future taxable income for purposes of assessing our ability to utilize any future tax benefit from our deferred tax assets.
Although management believes that our tax estimates are reasonable, the ultimate tax determination involves significant judgments that could become subject to audit by tax authorities in the ordinary course of business. As of each reporting date, management considers new evidence, both positive and negative, that could impact management’s view with regard to future realization of deferred tax assets. As of SeptemberJune 30, 2018,2019, we continue to demonstrate three-year cumulative pre-tax income in the U.S. federal and Arizonastate tax jurisdictions; however, ourwe have Arizona R&D Tax Credits start to expire in 2018 with a significant tranche with a gross value of $1.2 million expiring if not used by the end of 2019. It appears that our long term investments, which impact short-term profits, will likely result in some of the R&D credits expiring before they are utilized.unutilized each year. Therefore, management has concluded that it is more likely than not that a portion of our Arizona R&D deferred tax assetsasset will not be realizedrealized.

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As of June 30, 2019, we have cumulative pre-tax losses in Australia, the U.K., and Canada, which limits the ability to consider other subjective evidence, such as projections for future growth. On the basis of this evaluation, a full valuation allowance has established a valuation allowance.been recorded for these jurisdictions. The amount of the deferred tax asset considered realizable; however, could be adjusted in future periods if objective negative evidence in the form of cumulative losses is no longer present and additional weight is given to subjective evidence such as projections for growth.
We have claimedcomplete R&D tax credits of approximately $17.0 millioncredit studies for each year that an R&D tax credit is claimed for federal, Arizona, and California income tax purposes related to tax years 2003 to 2018.purposes. Management has made the determination that it is more likely than not that the full benefit of the R&D tax creditscredit will not be sustained uponon examination and recorded a liability for unrecognized tax benefits of $3.6$6.1 million as of SeptemberJune 30, 2018.2019. In addition, management accrued $0.2$0.1 million for estimated uncertain tax positions related to certain federal and state income tax liabilities, for a total liability for unrecognized tax benefit as of September 30, 2018 of $3.8 million. Management expects the amount of unrecognized tax benefit liability to increase by $0.2 million within the next 12 months.liabilities. Should the unrecognized benefit of $3.8$6.2 million be recognized, our effective tax rate would be favorably impacted. Approximately $2.2$2.9 million of the unrecognized tax benefit associated with R&D credits has been netted against the R&D deferred tax asset.


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Effective Tax Rate
Our overall effective tax rate for the ninesix months ended SeptemberJune 30, 2018,2019, after discrete period adjustments, was (8.1)(29.3)%. Before discrete adjustments, the tax rate was 24.0%21.4%, which is moregreater than the federal statutory rate, primarily due to state taxes and non-deductible expenses for items such as meals and entertainment, the executive compensation limitation under IRC sectionInternal Revenue Code ("IRC") Section 162(m), lobbying fees, and an income inclusion from GILTI,global intangible low-taxed income ("GILTI"), offset by a reduction for foreign-derived intangible income ("FDII"). This was partially offset by and R&D tax credit deductions.credits. The effective tax rate was favorably impacted by an $8.1a $3.3 million discrete tax benefit primarily associated with windfalls related to stock-based compensation for RSUs that vested or stock options that were exercised during the ninesix months ended SeptemberJune 30, 2018. Of this amount, $3.42019. This was offset by an unfavorable discrete item of $0.6 million related to the write off of certain deferred tax assets related to future stock options exercisedcompensation vests for certain officers for whom deductibility of compensation is limited by our CEO in connection with our follow-on offering, as discussed in Note 9.IRC Section 162(m).
9. Stockholders’ Equity
Follow-On OfferingPerformance-based stock awards

We have issued performance-based stock options and performance-based RSUs, the vesting of which is generally contingent upon the achievement of certain performance criteria related to our operating performance, as well as successful and timely development and market acceptance of future product introductions. In May 2018, we sold 4,645,000 sharesaddition, certain of our common stock, which included 645,000 shares pursuantthe performance RSUs have additional service requirements subsequent to the full exerciseachievement of the underwriters' optionperformance criteria. Compensation expense is recognized over the requisite service period, which is defined as the longest explicit, implicit or derived service period based on management’s estimate of the probability of the performance criteria being satisfied, adjusted at each balance sheet date. For awards containing multiple service, performance or market conditions, where all conditions must be satisfied prior to purchasevesting, compensation expense is recognized over the requisite service period, which is defined as the longest explicit, implicit or derived service period, based on management’s estimate of the probability of the performance criteria being satisfied, adjusted at each balance sheet date. For both service-based and performance-based RSUs, we account for forfeitures as they occur as a reduction to stock-based compensation expense and additional shares,paid-in-capital.

For performance-based options with a vesting schedule based entirely on the attainment of both performance and market conditions, stock-based compensation expense is recognized for each pair of performance and market conditions over the longer of the expected achievement period of the performance and market conditions, beginning at the point in an underwritten public offering at a pricetime that the relevant performance condition is considered probable of $53.00 per share, which resulted in gross proceedsachievement. The fair value of $246.2 million. Net proceeds after deducting fees, commissions, and other expenses related tosuch awards is estimated on the offering were $234.0 million.grant date using Monte Carlo simulations.
CEO Performance Award
On May 24, 2018 (the “Grant Date”), our stockholders approved the Board of Directors’ grant of 6,365,856 stock option awards to Patrick W. Smith, our CEO (the “CEO Performance Award”). The CEO Performance Award consists of 12 vesting tranches with a vesting schedule based entirely on the attainment of both operational goals (performance conditions) and market capitalization goals (market conditions), assuming continued employment either as the CEO or as both Executive Chairman and Chief Product Officer and service through each vesting date. Each of the 12 vesting tranches of the CEO Performance Award have a 10-year contractual term and will vest upon certification by the Board of Directors that both (i) the market capitalization goal for such tranche, which begins at $2.5 billion for the first tranche and increases by increments of $1.0 billion thereafter, and (ii) any

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one of the following eight operational goals focused on revenue or eight operational goals focused on Adjusted EBITDA have been met for the previous four consecutive fiscal quarters. Adjusted EBITDA for purposes of the CEO Performance Award ("Adjusted EBITDA (CEO Performance Award)") is defined as net income (loss) attributable to common stockholders before interest expense, investment interest income, provision (benefit) for income taxes, depreciation and amortization,and stock-based compensation expense.
Eight Separate Revenue Goals (1)
(in thousands)
 
Eight Separate Adjusted EBITDA (CEO Performance Award) Goals
(in thousands)
Goal #1, $710,058 Goal #9, $125,000
Goal #2, $860,058 Goal #10, $155,000
Goal #3, $1,010,058 Goal #11, $175,000
Goal #4, $1,210,058 Goal #12, $190,000
Goal #5, $1,410,058 Goal #13, $200,000
Goal #6, $1,610,058 Goal #14, $210,000
Goal #7, $1,810,058 Goal #15, $220,000
Goal #8, $2,010,058 Goal #16, $230,000
(1) In connection with the business acquisition that was completed during the three months ended June 30, 2018, (Note 15), the revenue goals have been adjusted for the acquiree's Target Revenue, as defined in the CEO Performance Award agreement.
As of SeptemberJune 30, 2018,2019, the following operational goals were considered probable of achievement:
Total revenue of $710.1 million; and
Adjusted EBITDA (CEO Performance Award) of $125.0 million; and
Total revenue of $710.1 million

The first two market capitalization goals have been achieved as of June 30, 2019. However, none of the stock options granted under the CEO Performance Award have vested thus far as the operational goals have not yet been achieved as of June 30, 2019. As there are two operational goals considered probable of achievement, we recorded stock-based compensation expense of $6.1 million related to the CEO Performance Award from the Grant Date through June 30, 2019. The number of stock options that would vest related to the two tranches is approximately 1.1 million shares.
As of June 30, 2019, we had $39.1 million of total unrecognized stock-based compensation expense for the performance goals that were considered probable of achievement, which will be recognized over a weighted-average period of 7.2 years. As of June 30, 2019, we had unrecognized stock-based compensation expense of $200.7 million for the performance goals that were considered not probable of achievement.
eXponential Stock Performance Plan
On February 12, 2019, our shareholders approved the 2019 Stock Incentive Plan (the “2019 Plan”), which was adopted by the Board of Directors to reserve a sufficient number of shares to facilitate our eXponential Stock Performance Plan (“XSPP”) and grants of eXponential Stock Units (“XSUs”) under the plan. Pursuant to the XSPP, all eligible full-time U.S. employees were granted an award of 60 XSUs in January 2019, and certain employees had the opportunity to elect to receive a percentage of the value of their target compensation over the next nine years (2019-2027) in the form of additional XSUs. For employees who elected to receive XSUs, the XSU grants were made as an up front, lump sum grant in January 2019, and are intended to replace that portion of the target compensation they elected to receive in the form of XSUs for the next nine years. Accordingly, their go forward target compensation will be reduced until 2027 by the amount of such compensation that the employees elected to receive in the form of the January 2019 XSU grants. A total of approximately 5.2 million XSUs were granted in the six months ended June 30, 2019.
The XSUs are grants of restricted stock units, each with a term of approximately nine years, that vest in 12 equal tranches. Each of the 12 tranches will vest upon certification by the Compensation Committee of the Board of Directors that both (i) the market capitalization goal for such tranche, which begins at $2.5 billion for the first tranche and increases by increments of $1.0 billion thereafter, and (ii) any one of eight operational goals focused on revenue or eight operational goals focused on Adjusted EBITDA (CEO Performance Award) have been met for the previous four consecutive fiscal quarters.


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The XSPP contains an anti-dilution provision, which is used to calculate a maximum number of shares outstanding for purposes of determining achievement of the market capitalization goals whereby the maximum number of shares used to calculate the market capitalization goal is calculated by organically growing the current number of shares outstanding by 3% per year (the "XSU Maximum"). Any shares of Stock issued to Patrick W. Smith upon the exercise of the stock options granted to Mr. Smith under the CEO Performance Award shall increase the XSU Maximum. The XSU Maximum shall also be adjusted for acquisitions, spin-offs or other changes in the number of outstanding shares of common stock, if such changes have a corresponding adjustment on the market capitalization goals.

The market capitalization and operational goals are identical to the CEO Performance Award, except for the number of shares that are used to calculate the market capitalization goals if shares outstanding exceed the XSU Maximum. Additionally, because the grant date is different than that of the CEO Performance Award, the measurement period for market capitalization is not identical.
Stock-based compensation expense associated with the CEO Performance AwardXSU awards is recognized over the longer of the expected achievement period for each pair of market capitalization and operational goals, beginning at the point in time when the relevant operational goal is considered probable of being met. The market capitalization goal period and the valuation of each tranche are determined using a Monte Carlo simulation andwhich is also is used as the basis for determining the expected achievement period of the market capitalization goal. The probability of meeting an operational goal and the expected achievement point in time for meeting a probable operational goal are based on a subjective assessment of our forward-looking financial projections, taking into consideration statistical analysis. Even though no tranches of the CEO Performance AwardXSU awards vest unless a market capitalization and a matching operational goal are both achieved, stock-based compensation expense is recognized when an operational goal is considered probable of achievement regardless of whether a market capitalization goal is actually achieved. Additionally, stock-based compensation represents a non-cash expense and is recorded in sales, general, and administrative operating expense
The first market capitalization goal has been achieved as of June 30, 2019. The second market capitalization goal was achieved on our condensed consolidated statement of operations.
NoneJuly 16, 2019. However, none of the stock options granted under the CEO Performance AwardXSU tranches have vested thus far as the market capitalization goals and operational goals have not yet been achieved as of SeptemberJune 30, 2018. However, as2019. As there are two operational goals considered probable of achievement, we recorded stock-based compensation expense of $1.8$1.9 million related to the CEO Performance AwardXSU awards from the Grant Datetheir respective grant dates through SeptemberJune 30, 2018.2019. The number of stock options expectedXSU awards that would vest related to vestthe two tranches is 1.1approximately 0.9 million shares.
As of SeptemberJune 30, 2018,2019, we had $43.4$35.5 million of total unrecognized stock-based compensation expense for the performance goals that were considered probable of achievement, which will be recognized over a weighted-average period of 8.37.2 years. As of SeptemberJune 30, 2018,2019, we had unrecognized stock-based compensation expense of $200.7$136.5 million for the performance goals that were considered not probable of achievement.
Given the complexity of the awards, we utilized Monte Carlo simulations to simulate a range of possible future market capitalizations for the Company over the term of the awards. The average of all iterations of the simulation was used as the basis for the valuation and market capitalization goal derived service period for each tranche. Additionally, we applied an illiquidity discount of between 10.0% and 16.8% to the valuation of XSUs because the awards specify a post-vest holding period of 2.5 years. Certain of the XSU awards specify a post-vest holding period of the longer of 2.5 years or until the next tranche vests. The illiquidity discounts were estimated using the Finnerty model and reduced by the impact of expected payroll and income taxes due upon vesting of the awards, as the related proportion of shares are expected to be sold to satisfy such obligations. We measured the grant date fair value of the CEO Performance Award using a Monte Carlo simulation approachXSU awards with the following assumptions: risk-free interest rate of 2.98%between 2.47% and 2.62%, expected term of 10approximately 9 years, expected volatility of 47.71%between 44.96% and 45.47%, and dividend yield of 0.00%.
Restricted Stock Incentive PlanUnits
In May 2018, our stockholders approved a new stock incentive plan authorizing an additional 1.0 million shares, plus remaining available shares under prior plans,The following table summarizes RSU activity for issuance under the new plan. Combined with the legacy stock incentive plans, there are 1.7 million shares available for grant assix months ended June 30, 2019 (number of September 30, 2018.
Performance-based stock awards
We have issued performance-based stock optionsunits and performance-based RSUs, the vesting of which is contingent upon the achievement of certain performance criteria related to our operating performance, as well as successful and timely development and market acceptance of our products.
RSUs are classified as equity and measured at the fair marketaggregate intrinsic value of the underlying stock at the grant date. We recognize RSU expense using the straight-line attribution method over the requisite service period. For performance-based RSUs containing only performance conditions, compensation cost is recognized using the accelerated attribution model over the explicit or implicit service period. For awards containing multiple service, performance or market conditions, where all conditions must be satisfied prior to vesting, compensation expense is recognized over the longest explicit, implicit or derived service period, based on management’s estimate of the probability of the performance criteria being satisfied, adjusted at each balance sheet date.
For performance-based options, stock-based compensation expense is recognized over the expected performance achievement period of individual performance goals when the achievement of each individual performance goal becomes probable. For performance-based options with a vesting schedule based entirely on the attainment of both performance and market conditions, stock-based compensation expense is recognized for each pair of performance and market conditions over the longer of the expected achievement period of the performance and market conditions, beginning at the point in time that the relevant performance condition is considered probable of achievement. The fair value of such awards is estimated on the grant date using Monte Carlo simulations.

thousands):
19
 
Number of
Units
 
Weighted Average
Grant-Date Fair Value
 Aggregate
Intrinsic Value
Units outstanding, beginning of year1,655
 $28.34
  
Granted5,732
 34.65
  
Released(375) 23.15
  
Forfeited(104) 37.25
  
Units outstanding, end of period6,908
 33.73
 $443,531


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Restricted Stock Units
The following table summarizes RSU activity for the nine months ended September 30, 2018 (number of units and aggregate intrinsic value in thousands):
 
Number
of
Units
 
Weighted
Average
Grant-Date
Fair Value
 Aggregate
Intrinsic Value
Units outstanding, beginning of year2,348
 $23.47
  
Granted341
 45.52
  
Released(556) 23.62
  
Forfeited(248) 23.79
  
Units outstanding, end of period1,885
 27.45
 $128,991

Aggregate intrinsic value represents our closing stock price on the last trading day of the period, which was $68.43$64.21 per share, multiplied by the number of RSUs outstanding. As of SeptemberJune 30, 2018,2019, there was $39.6$79.5 million in unrecognized compensation costs related to RSUs under our stock plans.plans for shares that are expected to vest. We expect to recognize the cost related to the RSUs over a weighted average period of 2.43 years4.49 years. RSUs are released when vesting requirements are met.
During the ninesix months ended SeptemberJune 30, 2018,2019, we granted 0.15.7 million RSUs, consisting of 0.4 million service-based RSUs and approximately 5.3 million performance-based RSUs.RSUs, including 5.2 million XSUs. As of SeptemberJune 30, 2018,2019, the performance criteria had not been met for anyapproximately four thousand of the 0.45.6 million performance-based RSUs outstanding.Theoutstanding. Certain of the performance-based RSUs outstanding as of June 30, 2019 can vest with a range of shares earned being between 0% and 200% of the targeted shares granted, in 2018, 2017 and 2016 contain provisions wherebydepending on the amount of RSUs that ultimately vest is dependent upon the level offinal achievement of pre-determined performance metrics.criteria as of the vesting date. The amount of RSUs included in the table above related to such grants is the target level, which is our best estimate of the amount of RSUs that will vest.level. The maximum additional number of performance-based RSUs that could be earned is 0.40.3 million, which are not included in the table above.
Certain RSUs that vested in the ninesix months ended SeptemberJune 30, 20182019 were net-share settled such that we withheld shares with value equivalent to cover the employees’ minimum statutorytax obligation for the applicable income and other employment taxes, and remitted the cash to the appropriate taxing authorities. Total shares withheld related to RSUs were 0.1 millionapproximately 29 thousand and had a value of $5.6$2.1 million on their respective vesting dates as determined by the closing stock price on such dates. Payments for the employees’ tax obligations are reflected as a financing activity within the statementcondensed consolidated statements of cash flows. We record a liability for the tax withholding to be paid by us as a reduction to additional paid-in capital.
Stock Option Activity
The following table summarizes stock option activity for the ninesix months ended SeptemberJune 30, 20182019 (number of units and aggregate intrinsic value in thousands):
 
Number
of
Options
 
Weighted
Average
Exercise
Price
 Weighted Average Remaining Contractual Life (years) Aggregate
Intrinsic Value
Options outstanding, beginning of year6,458
 $28.24
    
Granted
 
    
Exercised(25) 4.23
    
Expired / terminated
 
    
Options outstanding, end of period6,433
 28.33
 8.58 $230,820
Options exercisable, end of period67
 4.53
 1.44 4,005
 
Number
of
Options
 
Weighted
Average
Exercise
Price
 Weighted Average Remaining Contractual Life (years) Aggregate
Intrinsic Value
Options outstanding, beginning of year804
 $4.99
    
Granted6,366
 28.58
    
Exercised(445) 5.26
    
Expired / terminated(43) 4.46
    
Options outstanding, end of period6,682
 27.45
 9.23 $238,748
Options exercisable, end of period311
 4.66
 0.69 19,871
Options expected to vest, end of period1,061
 

 
 


Aggregate intrinsic value represents the difference between the exercise price of the underlying stock option awards and the closing market price of our common stock of $68.43$64.21 on September 30, 2018.June 28, 2019. The intrinsic value of options exercised for the ninesix months ended SeptemberJune 30, 2019 and 2018 and 2017 was $20.5$1.1 million and $2.6$18.8 million, respectively. As of SeptemberJune 30, 2018,2019, total options outstanding included 6.4 million unvested performance-based stock options, of whichoptions. Of this total, 1.1 million are expectedoptions relate to vest.tranches of the CEO Performance Award considered probable of achievement.

Stock-based Compensation Expense
The following table summarizes the composition of stock-based compensation expense for the three and six months ended June 30, 2019 and 2018 (in thousands):
20
 Three Months Ended June 30, Six Months Ended June 30,
 2019 2018 2019 2018
Cost of products sold and services delivered$237
 $125
 $463
 $266
Sales, general and administrative expenses4,941
 2,731
 9,622
 5,035
Research and development expenses3,449
 2,098
 6,447
 3,746
Total stock-based compensation expense$8,627
 $4,954
 $16,532
 $9,047


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OfStock Incentive Plan

In February 2019, our shareholders approved the total2019 Plan authorizing an additional 6.0 million shares, plus remaining available shares under prior plans, for issuance under the new plan. Combined with the legacy stock options exercised during the nine months ended Septemberincentive plans, there are 2.1 million shares available for grant as of June 30, 2018, 0.3 million were exercised and the shares then sold by our CEO in connection with our follow-on offering. The CEO surrendered already owned shares to cover the exercise price of the option exercises. The option exercises were net-share settled such that we withheld shares with value equivalent to the CEO’s minimum statutory obligation for the applicable income and other employment taxes, and remitted the cash to the appropriate taxing authorities. Total shares withheld for tax purposes and surrendered to cover the option exercises were 0.1 million and 29,854, respectively, and had a value of $6.2 million and $1.6 million, respectively, on the exercise date as determined by the closing stock price on that day. Payments for the employees’ tax obligations are reflected as a financing activity within the statement of cash flows. We record a liability for the tax withholding to be paid by us as a reduction to additional paid-in capital.
Stock-based Compensation Expense
The following table summarizes the composition of stock-based compensation for the three and nine months ended September 30, 2018 and 2017 (in thousands):
 Three Months Ended September 30, Nine Months Ended September 30,
 2018 2017 2018 2017
Cost of products sold and services delivered$93
 $134
 $359
 $368
Sales, general and administrative expenses3,748
 2,099
 8,783
 6,282
Research and development expenses2,414
 1,767
 6,160
 4,773
Total stock-based compensation$6,255
 $4,000
 $15,302
 $11,423
2019.
Stock Repurchase Plan
In February 2016, our Board of Directors authorized a stock repurchase program to acquire up to $50.0 million of our outstanding common stock subject to stock market conditions and corporate considerations. During the ninesix months ended SeptemberJune 30, 20182019 and 2017,2018, no common shares were purchased under the program. As of SeptemberJune 30, 2018,2019, $16.3 million remains available under the plan for future purchases. We suspended our 10b5-1 plan during 2016, and anyAny future purchases will be discretionary.
10. Line of Credit
We have a $10.0$50.0 million unsecured revolving line of credit with a domestic bank. bank, of which $10.0 million is available for letters of credit. The credit agreement matures on December 31, 2021 and has an accordion feature which allows for an increase in the total line of credit up to $100.0 million, subject to certain conditions, including the availability of additional bank commitments.
At both SeptemberJune 30, 20182019 and December 31, 2017,2018, there were no borrowings under the line. Under the terms of the line of credit, available borrowings are reduced by outstanding letters of credit. As of SeptemberJune 30, 2018,2019, we had letters of credit outstanding of $3.1approximately $4.4 million under the facility and available borrowing of $6.9 million. The line is secured by substantially all of our assets, and bears interest at varying rates (currently LIBOR plus 1.25% or Prime less 0.50%). The$45.6 million, excluding amounts available under the accordion feature. Advances under the line of credit matures on December 31, 2018, and requires monthly payments ofbear interest only. Our agreement with the bank requires usat LIBOR plus 1.0 to comply1.5% per year determined in accordance with a maximumpricing grid based on our funded debt to earnings before interest, taxes, depreciation and amortization ("EBITDA") ratio.  
We are required to comply with a maximum funded debt to EBITDA ratio as defined, of no greater than 2.002.50 to 1.00 based upon a trailing twelve-monthfour fiscal quarter period. At SeptemberJune 30, 2018,2019, our funded debt to EBITDA ratio was 0.001 to 1.00.
11. Leases
Lease Obligations
We determine if an arrangement is a lease at inception. Operating lease ROU assets and liabilities are recognized based on the present value of future minimum lease payments over the lease term at commencement date. As most of our leases do not provide an implicit rate, we use our incremental borrowing rate based on the information available at the commencement date in determining the present value of future payments. Additionally, we use the portfolio approach in determining the discount rate used to present value lease payments. We give consideration to our line of credit as well as publicly available data for instruments with similar characteristics when calculating our incremental borrowing rates. The ROU asset also includes any lease payments made and initial direct costs incurred and excludes lease incentives.
We have operating and finance leases for office space and certain equipment. Leases with an initial term of 12 months or less are not recorded on the balance sheet; we recognize lease expense for these leases on a straight-line basis over the lease term. For leases beginning on or after January 1, 2019, we account for lease components separately from non-lease components for all asset classes.
Our leases have remaining terms of less than 1 to 4 years, some of which include one or more options to renew for up to 2 years, and some of which include options to terminate the leases within 1 year. The exercise of lease renewal options is at our sole discretion and such options are included in ROU assets and liabilities for renewal periods that are reasonably certain of exercise. Certain of our lease agreements include stated rental payment escalations. Our lease agreements do not contain any material residual value guarantees or material restrictive covenants. We sublease certain real estate to third parties. Finance leases as of June 30, 2019 were immaterial.

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Leases (in thousands) Classification June 30, 2019
Assets    
Operating lease assets Other assets $10,770
Liabilities    
Current    
Operating Other current liabilities $3,814
Noncurrent    
Operating Other long-term liabilities 8,013
Total lease liabilities   $11,827

The components of lease expense were as follows (in thousands):
  Classification Three Months Ended June 30, 2019 Six Months Ended June 30, 2019
Operating lease expense (1)
 
Sales, general and administrative expenses (2)
 $1,137
 $2,154
Sublease income Other income (95) (137)
Net lease expense   $1,042
 $2,017
(1) Includes short-term leases, which are immaterial.
(2) An immaterial portion of operating lease expense is included within research and development expenses and cost of sales.
Other information related to leases was as follows (in thousands, except lease term and discount rate):
  Six Months Ended June 30, 2019
Supplemental Cash Flows Information  
Cash paid for amounts included in the measurement of lease liabilities:  
Operating cash flows from operating leases $2,017
Right-of-use assets obtained in exchange for lease liabilities:  
Operating leases 84
Weighted average remaining lease term:  
Operating leases 3.5 years
Weighted average discount rate:  
Operating leases 3.6%


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Future minimum lease payments under non-cancellable leases as of June 30, 2019 were as follows (in thousands):
 Operating Sublease income Net
2019 Remaining$2,248
 $(164) $2,084
20204,224
 (82) 4,142
20213,340
 
 3,340
20222,409
 
 2,409
20231,173
 
 1,173
2024
 
 
Thereafter
 
 
Total minimum lease payments13,394
 (246) 13,148
Less: Amount representing interest    (1,321)
Present value of lease payments    $11,827

As of June 30, 2019, we do not have any leases that have not yet commenced other than the land lease purchase agreement described in Note 12.

Disclosures related to periods prior to adoption of Topic 842
Rent expense under all operating leases, including both cancelable and non-cancelable leases, was $4.2 million and $2.9 million for the years ended December 31, 2018 and 2017, respectively.
Future minimum lease payments under non-cancelable leases at December 31, 2018, were as follows (in thousands):
 Operating Capital
2019$3,670
 $40
20203,572
 36
20212,961
 
20222,001
 
2023573
 
Thereafter
 
Total minimum lease payments$12,777
 76
Less: Amount representing interest  (6)
Capital lease obligation  $70

12. Commitments and Contingencies
Land Lease Purchase Agreement

On December 13, 2018, we entered into a Purchase and Sale Agreement ("PSA") to purchase a leasehold interest to a parcel of land located in Maricopa County, Arizona for a period of 84 years, on which we intend to construct our new headquarters. The purchase price of the land lease was $13.1 million. It is also contemplated that we will prepay the rent under the lease in the amount of $10.9 million. The PSA includes a due diligence period, during which we may terminate and forfeit our initial deposit of $0.2 million. On March 4, 2019, we entered into an amendment to the PSA which extended the due diligence period to May 3, 2019. On May 3, 2019, we entered into a second amendment to the PSA which extended the due diligence period to June 28, 2019. The second amendment also revised certain stated approval dates and removed the requirement for an additional deposit originally due at the end of the due diligence period. The land lease remains contingent upon approval by the Salt River Pima-Maricopa Indian Community.

Data Storage Purchase Commitment

In June 2019, we entered into a purchase agreement for cloud data storage with a three years term beginning July 1, 2019. The purchase agreement includes a total commitment of $50.0 million, with an up-front prepayment of $15.0 million in July 2019.
Product Litigation
We are currently named as a defendant in seven lawsuits in which the plaintiffs allege either wrongful death or personal injury in situations in which a TASER CEW was used by law enforcement officers in connection with arrests. While the facts vary from case to case, thethese product liability claims are typically based on an allegedallege defective product defect resulting in injury design, manufacturing, and/or death, usually involving a failure to warn and/or design defect,warn. They seek compensatory and the plaintiffs are seeking monetary damages. The informationsometimes punitive damages, often in this note is current through the date of these financial statements.unspecified amounts.

We continue to aggressively defend all product litigation. As a general rule, it is our policy not to settle suspect injury or death cases. Exceptions are sometimes made where the settlement is strategically beneficial to us. Due to the confidentialityconfidential nature of our litigation strategy and the confidentiality agreements that are executed in the event of a settlement, we do not identify or comment on which specific lawsuits have been settledsettlements by case or amount. Based on current information, we do not believe that the amountoutcome of any settlement.

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In 2009, we implemented new risk management strategies, including revisions tooperations, or cash flows. We are self-insured for the first $5.0 million of any product warnings and training to better protect both us and our customers from litigation based on “failure to warn” theories - which comprise the vast majority of the cases against us. These risk management strategies have been highly effectiveclaim made after 2014. No judgment or settlement has ever exceeded this amount in reducing the rate and exposure from litigation post-2009. Since the third quarter of 2011, product liability cases have been reduced from 55 to seven active cases.
We intend to continue our successful practice of aggressively defending and generally not settling litigation except in very limited and unusual circumstances as described above. With respect to each of the pending lawsuits, the following table lists the name of plaintiff, the date we were served with process, the jurisdiction in which the case is pending, the type of claim and the status of the matter.
Plaintiff
Month
Served
JurisdictionClaim TypeStatus
DerbyshireNov-09Ontario, Canada Superior Court of JusticeOfficer InjuryDiscovery Phase. Trial scheduled for October 14, 2019.
ShymkoDec-10The Queen's Bench, Winnipeg Centre, ManitobaWrongful DeathPleading Phase, currently inactive
RamseyJan-1212th Judicial Circuit Court, Broward County, FLWrongful DeathDiscovery Phase, currently inactive
BennettSep-1511th Judicial Circuit Court, Miami-Dade County, FLWrongful DeathDiscovery Phase
TaylorMar-17U.S, District Court, Southern District of TexasOfficer InjuryDispositive Motion Phase: We filed our motion for summary judgment on April 20, 2018.
WiggingtonApr-18U.S, District Court, Western District Court of MissouriWrongful DeathPleading Phase
LewisOct-18General Court of Justice Superior Court Division, Stanly County, NCWrongful DeathPleading Phase
Through the date of these financial statements, one product liability case was dismissed with prejudice on October 1, 2018. There are no product litigation matters in which we are involved that are currently on appeal.
The claims, and in some instances the defense, of each of these lawsuits have been submitted to our insurance carriers that maintained insurance coverage during the applicable periods.any products case. We continue to maintain product liability insurance coverage, including an insurance policy fronting arrangement, above our self-insured retention with varyingvarious limits and deductibles. The following table provides information regarding our product liability insurance. Remaining insurance coverage is baseddepending on information received from our insurance provider (in millions).
Policy Year 
Policy
Start
Date
 
Policy
End
Date
 
Insurance
Coverage
 
Deductible
Amount
 
Defense
Costs
Covered
 
Remaining
Insurance
Coverage
 
Active Cases and Cases on
Appeal
2009 12/15/2008 12/15/2009 $10.0
 $1.0
 N $10.0
 Derbyshire
2010 12/15/2009 12/15/2010 10.0
 1.0
 N 10.0
 Shymko
Jan-Jun 2012 12/15/2011 6/25/2012 7.0
 1.0
 N 7.0
 Ramsey
2015 12/15/2014 12/15/2015 10.0
 5.0
 N 10.0
 Bennett
2017 12/15/2016 12/15/2017 10.0
 5.0
 N 10.0
 Taylor
2018 12/15/2017 12/15/2018 10.0
 5.0
 N 10.0
 Wiggington, Lewis
the policy period.
Other Litigation
Phazzer Patent Infringement Litigation
In February 2016, we filedWe are a complaint against Phazzer Electronics Inc. (“Phazzer”) for patent infringement, trademark infringement and false advertising. On July 21, 2017, the U.S. District Court for the Middle District of Florida (Case No. 6:16-cv-00366-PGB-KRS) granted our Motion for Sanctions and for a Permanent Injunction against Florida-based Phazzer. The Court issued a broad permanent injunction against Phazzer banning sales of the infringing Phazzer Enforcer CEWs and dart cartridges. The injunction prohibits Phazzer and its officers, agents, employees, and anyone acting in concert with them, from making, using, offering for sale, selling, distributing, importing or exporting Phazzer CEWs and associated cartridges. Phazzer is further enjoined from dumping its infringing inventory by “donating” CEWs to law enforcement, and from false advertising and comparison to TASER brand products. Both Phazzer and its U.S. distributors are barred from exporting CEWs or cartridges to fill foreign orders. On August 10, 2017, Phazzer filed a notice of appeal to the Federal Circuit. Phazzer's multiple attempts to stay the injunction pending appeal have been denied by both the district and appellate courts. The appeal was argued on October 2, 2018, and the Federal Circuit issued its opinion affirming the both judgment and injunction in all respects on October 26, 2018.

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On April 4, 2018, the Court entered a judgment for us against Phazzer in an amount exceeding $7.8 million which included an award to us of compensatory and treble damages for willful infringement, and also an award of reasonable attorneys’ fees and costs. Post-judgment collection efforts are underway, but the collectability of this judgment is in doubt since Phazzer has informed the Court it is insolvent. On May 1, 2018, Phazzer appealed the damages award to the Federal Circuit. Briefing is not yet complete.
In imposing severe sanctions against Phazzer, the Court found that Phazzer “engageddefendant in a pattern of bad faith conduct designed and intended to delay, stall, and increase the cost of this litigation,” and that Phazzer repeatedly disregarded Court Orders thereby exhibiting “contemptuous”, “egregious”, “flagrant” and “intentional obstructionist behavior” resulting in willful “abuse [of] the judicial process.” The Court made similar findings in both the damages and contempt orders.
On April 27, 2017, during the district court litigation Phazzer filed a second petition for reexamination of our patent with the U.S. Patent and Trademark Office ("USPTO"). Our patent (U.S. No. 7,234,262) at issue in the litigation relates to the CEW’s data recording of date and time of each trigger operation and duration of the stimulus. On April 2, 2018, the examiner issued a final office action rejecting all claims. We are appealing this decision. Our patent remains valid and enforceable unless and until all appeals are exhausted and the patent is formally canceled (estimated to be at least a 2-year process).
Our trademark that is the subject of the injunction is Federal Registration No. 4,423,789, relating to the non-functional shape of TASER CEW cartridges used to launch the darts. The injunction covers all Phazzer CEW dart cartridges that are confusingly similar to, or not more than a colorable imitation of, TASER CEW cartridges. During the litigation, Phazzer filed a petition to cancel our trademark, which the Trademark Board stayed until the conclusion of the district court litigation and all related appeals.
Digital Ally Patent Litigation
In February 2016, we were served with a first amended complaintmatter filed by Digital Ally Inc. (“Digital”) in the U.S. District Court for the District of Kansas (Case No. CV-16-02032-CM-JPO) alleging patent infringement regarding our Axon Signal technology, commercial bribery, antitrust, and unfair competition. In March 2016, we were served with a second amended complaint with similar allegations. The second amended complaint seeks atechnology. Axon was granted summary judgment of infringement, monetary damages, a permanent injunction, punitive damagesnon-infringement on June 17, 2019 and attorneys’ fees and costs.
Digital Ally’s complaint has been substantially narrowed basedjudgment was entered in our favor on (1) the district court’s dismissal of all of Digital’s antitrust claimsDigital's claims. Digital has appealed the ruling.

We are also a defendant in January 2017; this ruling was affirmed by the Federal Circuita consumer class action lawsuit previously filed and dismissed in MayCalifornia in 2018 and the Supreme Court denied certiorari on October 1, 2018; (2) the district court’s dismissal of Digital’s ‘292 patent from the litigation with prejudice in March 2018, and Digital’s execution of a covenant not to sue Axon on that patent on all existing Axon products; and (3) Digital’s dismissal of certain inconsistent claimsnow refiled in the ‘452 patent, leaving only one independent claim for resolutionDistrict of Nevada on April 9, 2019 (Case No. 3:1-cv-00192) by the Court. We believe the remaining claim of the ‘452 patent is invalid and not infringed, and are vigorously defending this litigation.
After instituting inter parte review of Digital’s ‘292 patent in June 2017, the Patent Trial and Appeal Board ("PTAB") ultimately rejected our invalidity challenge on June 1, 2018. Although this patent is no longer at issue in the litigation, we are appealing this ruling.
On July 19, 2018, the district court issued its claim construction ruling on three disputed claim terms in the remaining claim 10 of Digital’s ‘452 patent. Fact discovery concluded on October 8, 2018, and expert reports and discovery are now underway. No trial date has been set, but the Court has set certain other deadlines, including mediation no later than December 3, 2018 and a pretrial conference on January 16, 2019 (at which a trial date will likely be set).
Antoine di Zazzo Arbitration
In April 2016, we were served with a notice of arbitration claim filed by Antoine di Zazzo, our former distributor in France, for commissions allegedly owed Mr. di Zazzo. The arbitration claim was filed with the International Court of Arbitration of the International Chamber of Commerce in Paris, France, and the amount that is claimed in controversy is $0.6 million. Our records reflect that all commissions that were due Mr. di Zazzo under his contract were paid or offered to him and we will vigorously defend this arbitration claim.
Richey Class Action Litigation
On June 25, 2018, consumer weapon purchaser Douglas Richey (“Richey”) filed a class action lawsuit against us in. The case alleges the Northern District of California (Case No. 3:18-cv-03751-WHA) purporting to assert claims on behalf of all persons in the United

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States who purchased or acquired a TASER Pulse, TASER X2 and TASER X26P model CEW in the four-year period preceding the complaint. Richey claimed his Pulse CEW discharged while in its case in his jacket pocket due toCEWs have a faulty safety switch. Heswitch based on Richey’s Pulse allegedly discharging inside its neoprene case in a jacket pocket without injury. Any such discharge was not injured. Richey voluntarily dismissed the case on August 9, 2018.
Amani Kendi Kiogora Employment Related Litigation
On October 24, 2018, Amani Kendi Kiogora, a former employee of VIEVU, LLC ("VIEVU"), filed a lawsuitlikely due to static electricity, as disclosed in the Superior Court of Washington for King County (Case No. 18-2-26784-6 SEA) naming us, VIEVU and Safariland, LLC in an employment dispute relating to Washington’s wage laws, laws against discrimination,our consumer warnings. We will vigorously defend this claim and the Equal Opportunity Act. Ms. Kiogora claims disparate treatment against her and wrongful withholdingpropriety of commission payments relatedany class certification. Our motion to the New York Police Department (NYPD) body worn camera contract while employed with VIEVU. We acquired VIEVU in May 2018; see Note 15 for further discussion. We are tendering this matter to Safariland, LLC for defense and indemnification.dismiss is pending.
Appeals
Four appeals are currently pending in the Federal Circuit regarding various orders entered in the Phazzer litigation (see above). Appeal No. 17-2637 relates to the district court’s July 21, 2017 sanctions order and permanent injunction and is awaiting decision. The other three appeals relating to the district court’s April 4, 2018 damages award in our favor (No. 18-1914) and its May 4, 2018 contempt order as to Phazzer (No. 18-2059) and its agent Steven Abboud (No. 20-1857) were consolidated and are in the briefing stage.

We have appealed two decisions from the USPTO proceedings relating (1) to the patent examiner’s rejection of the ‘262 patent in a second reexamination petition filed by Phazzer, and (2) the PTAB’s denial of Axon’s IPR petition regarding Digital’s ‘292 patent (Federal Circuit No. 18-2217). Briefing has not yet begun in either appeal.

Voluntary Request Letter from the U.S. Federal Trade Commission Investigation
On or about
In June 14, 2018 we received a letter from the U.S. Federal Trade Commission (“FTC”) with respect to its non-public investigation into our acquisition of VIEVU, LLC in May of 2018.  In the letter, theThe FTC has requested that we provide, onissued a voluntary basis,subpoena for certain information and documentation relating to ourthe acquisition of VIEVU.on March 21, 2019. We are cooperating with the investigation.

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General
From time to time, we are notified that we may be a party to a lawsuit or that a claim is being made against us. It is our policy to not disclose the specifics of any claim or threatened lawsuit until the summons and complaint are actually served on us. After carefully assessing the claim, and assuming we determine that we are not at fault or we disagree with the damages or relief demanded, we vigorously defend any lawsuit filed against us. In certain legal matters, weWe record a liability when losses are deemed probable and reasonably estimable. When losses are deemed reasonably possible but not probable, we determine whether it is possible to provide an estimate of the amount of the loss or range of possible losses for the claim, if material for disclosure. In evaluating matters for accrual and disclosure purposes, we take into consideration factors such as our historical experience with matters of a similar nature, the specific facts and circumstances asserted, the likelihood of our prevailing, the availability of insurance, and the severity of any potential loss. We reevaluate and update accruals as matters progress over time.
Based on our assessment of outstanding litigation and claims as of SeptemberJune 30, 2018,2019, we have determined that it is not reasonably possible that these lawsuits will individually, or in the aggregate, materially affect our results of operations, financial condition or cash flows. However, the outcome of any litigation is inherently uncertain and there can be no assurance that any expense, liability or damages that may ultimately result from the resolution of these matters will be covered by our insurance or will not be in excess of amounts recognized or provided by insurance coverage and will not have a material adverse effect on our operating results, financial condition or cash flows.
Off-Balance Sheet Arrangements
Under certain circumstances, we use letters of credit and surety bonds to guarantee our performance under various contracts, principally in connection with the installation and integration of Axon cameras and related technologies. Certain of our letters of credit and surety bonds have stated expiration dates with others being released as the contractual performance terms are completed. At SeptemberJune 30, 2018,2019, we had outstanding letters of credit of $3.1$4.4 million that are expected to expire in May 2019.2020 and September 2021. Additionally,

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we had $14.1$24.6 million of outstanding surety bonds at SeptemberJune 30, 2018,2019, with $0.6 million expiring in 2018, $0.4 million expiring in 2019, $0.1$0.7 million expiring in 2020, $2.4$2.3 million expiring in 2021, $3.1$3.2 million expiring in 2022, and the remaining $7.5 million expiring in 2023.
Land Lease Purchase Agreement

On September 14, 2018, we entered into a Purchase2023 and Sale Agreement (the "agreement") to purchase a leasehold interest to a parcel of land locatedthe remaining $10.5 million expiring in Maricopa County, Arizona for a period of 69 years, on which we intended to construct our new headquarters. On November 2, 2018, we canceled the agreement. We expect our escrow deposit of approximately $0.2 million will be returned, and no further amounts are owed under the agreement.2024.
12.13. Related Party Transactions
We subscribe to various cloud-based applications from Salesforce. Bret Taylor, who was a member of our Board of Directors through June 14, 2019, serves as President and Chief Product Officer of Salesforce. We incur costs at different times throughout the year, typically in advance of services being provided, and subsequently amortize these costs ratably to expense as services are provided over the contractual term. We made payments of $1.7The cost to subscribe to various cloud-based hosting arrangements from Salesforce was $0.5 million related to these services during the nine months ended September 30, 2018, and made payments of $1.2$0.4 million during the nine months ended September 30, 2017, respectively. Payments duringfor the three months ended SeptemberJune 30, 2019 and 2018, respectively, and 2017$1.0 million and $0.9 million for the six months ended June 30, 2019 and 2018, respectively. There were each less than $0.1 million.no amounts due to Salesforce as of June 30, 2019. Amounts due to Salesforce as of December 31, 2018 were negligible.
13.14. Employee Benefit Plans
We have a defined contribution 401(k) plan for eligible employees, which is qualified under Sections 401(a) and 401(k) of the Internal Revenue Code of 1986, as amended. Employees are entitled to make tax-deferred contributions of up to the maximum amount allowed by law of their eligible compensation.
We also have a non-qualified deferred compensation plan for certain executives, key employees and non-employee directors through which participants may elect to postpone the receipt and taxation of a portion of their compensation, including stock-based compensation, received from us. The non-qualified deferred compensation plan allows eligible participants to defer up to 80% of their base salary and up to 100% of other types of compensation. The plan also allows for matching and discretionary employer contributions. Employee deferrals are deemed 100% vested upon contribution. Distributions from the plan are made upon retirement, death, separation of service, specified date or upon the occurrence of an unforeseeable emergency. Distributions can be paid in a variety of forms from lump sum to installments over a period of years. Participants in the plan are entitled to select from a wide variety of investments available under the plan and are allocated gains or losses based upon the performance of the investments selected by the participant. All gains or losses are allocated fully to plan participants and we do not guarantee a rate of return on deferred balances. Assets related to this plan consist of corporate-owned life insurance contracts and are included in other assets in the condensed consolidated balance sheets.sheets; see Note 6 for balances. Participants have no rights or claims with respect to any plan assets and any such assets are subject to the claims of our general creditors.
Contributions to the plans are made by both the employee and us. Our contributions to the 401(k) plan are based on the level of employee contributions and are immediately vested. Our matching contributions to the 401(k) planand non-qualified deferred compensation plans were $1.1 million and $0.8 million for the three months ended SeptemberJune 30, 2019 and 2018, respectively, and 2017, were $0.9$2.5 million and $0.6 million, respectively, and $2.4 million and $1.9$1.6 million for the ninesix months ended SeptemberJune 30, 20182019 and 2017,2018, respectively. Future matching contributions to the plans are at our sole discretion.
14.15. Segment Data
Our operations are comprised of two reportable segments: the manufacture and sale of CEWs, batteries, accessories, extended warranties and other products and services (the “TASER Weapons”“TASER” segment); and the software and sensors business, which includes the sale of devices, wearables, applications, cloud and mobile products (collectively, the “Software and Sensors” segment). WithinOur Chief Executive Officer, who is the SoftwareCODM, is not provided asset information or sales, general, and Sensors segment, we specify sales of products and services. Revenue fromadministrative expense by segment.
Information relative to our “products” in the Software and Sensors segment are generally from sales of sensors, including on-officer body cameras, Axon Fleet cameras, other hardware sensors, warranties on sensors,and other products, and is sometimes referred toreportable segments was as "Sensors and Other revenue." Revenue from our “services” in the Software and Sensors segment comprise sales related to the Axon Cloud, which includes Axon Evidence, cloud-based evidence management software revenue, other recurring cloud-hosted software revenue and related professional services, and is sometimes referred to as "Axon Cloud revenue." Within the Software and Sensors segment, we include only revenues and costs attributable to that segment which costs include: costs of sales for both products and services, direct labor,

follows (in thousands):
25
 Three Months Ended June 30, 2019 Three Months Ended June 30, 2018
 TASER 
Software and Sensors 1
 Total TASER Software and Sensors Total
Net sales from products$60,423
 $19,968
 $80,391
 $60,624
 $16,097
 $76,721
Net sales from services149
 31,822
 31,971
 
 22,505
 22,505
Net sales60,572
 51,790
 112,362
 60,624
 38,602
 99,226
Cost of product sales24,262
 13,958
 38,220
 17,681
 13,406
 31,087
Cost of service sales
 8,582
 8,582
 
 4,996
 4,996
Cost of sales24,262
 22,540
 46,802
 17,681
 18,402
 36,083
Gross margin$36,310
 $29,250
 $65,560
 $42,943
 $20,200
 $63,143
            
Research and development$3,087
 $20,406
 $23,493
 $4,019
 $14,482
 $18,501


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selling expenses for the sales team, product management and R&D for products included, or to be included, within the Software and Sensors segment. All other costs are included in the TASER Weapons segment. Our Chief Executive Officer, who is the CODM, is not provided asset information by segment, and therefore, no asset information is provided.
Information relative to our reportable segments was as follows (in thousands):
Three Months Ended September 30, 2018 
Three Months Ended September 30, 2017 (1)
Six Months Ended June 30, 2019 Six Months Ended June 30, 2018
TASER
Weapons
 Software and Sensors Total 
TASER
Weapons
 Software and Sensors TotalTASER 
Software and Sensors 1
 Total TASER Software and Sensors Total
Net sales from products$63,666
 $17,257
 $80,923
 $59,416
 $14,569
 $73,985
$125,724
 $42,756
 $168,480
 $124,148
 $33,547
 $157,695
Net sales from services
 23,913
 23,913
 
 16,277
 16,277
239
 59,453
 59,692
 
 42,746
 42,746
Net sales63,666
 41,170
 104,836
 59,416
 30,846
 90,262
125,963
 102,209
 228,172
 124,148
 76,293
 200,441
Cost of product sales19,256
 13,697
 32,953
 19,237
 15,336
 34,573
47,540
 30,280
 77,820
 38,224
 25,297
 63,521
Cost of service sales
 6,250
 6,250
 
 5,924
 5,924

 15,875
 15,875
 
 9,316
 9,316
Cost of sales19,256
 19,947
 39,203
 19,237
 21,260
 40,497
47,540
 46,155
 93,695
 38,224
 34,613
 72,837
Gross margin44,410
 21,223
 65,633
 40,179
 9,586
 49,765
$78,423
 $56,054
 $134,477
 $85,924
 $41,680
 $127,604
Sales, general and administrative22,574
 17,111
 39,685
 20,575
 15,823
 36,398
           
Research and development4,837
 17,145
 21,982
 1,856
 12,310
 14,166
$6,799
 $40,048
 $46,847
 $6,979
 $26,641
 $33,620
Income (loss) from operations$16,999
 $(13,033) $3,966
 $17,748
 $(18,547) $(799)

 Nine Months Ended September 30, 2018 
Nine Months Ended September 30, 2017 (1)
 
TASER
Weapons
 Software and Sensors Total 
TASER
Weapons
 Software and Sensors Total
Net sales from products$187,814
 $50,804
 $238,618
 $170,103
 $38,248
 $208,351
Net sales from services
 66,659
 66,659
 
 40,796
 40,796
Net sales187,814
 117,463
 305,277
 170,103
 79,044
 249,147
Cost of product sales57,480
 38,994
 96,474
 53,341
 38,476
 91,817
Cost of service sales
 15,566
 15,566
 
 13,258
 13,258
Cost of sales57,480
 54,560
 112,040
 53,341
 51,734
 105,075
Gross margin130,334
 62,903
 193,237
 116,762
 27,310
 144,072
Sales, general and administrative65,759
 49,028
 114,787
 55,283
 43,796
 99,079
Research and development11,816
 43,786
 55,602
 5,931
 33,687
 39,618
Income (loss) from operations$52,759
 $(29,911) $22,848
 $55,548
 $(50,173) $5,375
(1)1 AmountsCost of service sales for the three and ninesix months ended SeptemberJune 30, 2017 have not been adjusted under the modified retrospective method2019 includes approximately $0.9 million of adoption of Topic 606, and are presented consistent with the prior period amounts reported under ASC 605.third party installation costs.
15. Business Acquisition
On May 3, 2018, the acquisition date, we acquired all of the outstanding ownership interests of VIEVU, a public safety camera and cloud-based evidence management system provider for law enforcement agencies.
The estimated purchase price of $17.6 million consisted of $5.0 million in cash, net of cash acquired of $0.1 million, and $2.4 million, or 58,843 shares, of our common stock issued to VIEVU’s parent company, Safariland, LLC (“Safariland”). Additionally, the purchase price consisted of contingent consideration of up to $6.0 million, or 141,226 additional shares of common stock, if certain conditions relating to retention of certain VIEVU customers are met as of the first and second anniversaries of the acquisition date. The fair value of the contingent consideration as of the acquisition date was $5.8 million. The purchase price also included the fair value of a long-term Product Development and Supplier Agreement (the “Supply Agreement”) with Safariland, pursuant to which Safariland will be our preferred provider of holsters for its CEW products. The estimated fair value of the Supply Agreement as of the acquisition date was $4.5 million, a portion of which was recorded within accrued liabilities and the remaining portion recorded within other long-term liabilities.

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AXON ENTERPRISE, INC.
NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS – (Continued)


Pursuant to ASC 805, the acquisition of VIEVU has been accounted for as a business combination, under the acquisition method of accounting, which resulted in acquired assets and assumed liabilities being measured at their estimated fair values as of the acquisition date. As of the acquisition date, goodwill was measured as the excess of consideration transferred, which is also generally measured at fair value, over the net acquisition date fair values of the assets acquired and liabilities assumed. The final purchase price and purchase price allocation will be determined when we have completed the detailed valuations and necessary calculations. The final purchase price and purchase price allocation could differ materially from the preliminary allocation disclosed below. The final allocation may include (1) changes in the fair value of the contingent consideration and Supply Agreement, and (2) changes in fair values of assets and liabilities, including intangible assets and goodwill.
The major classes of assets and liabilities to which we have allocated the purchase price, on a preliminary basis, were as follows (in thousands):
Accounts receivable$1,776
Inventory2,626
Prepaid expenses and other assets362
Property and equipment459
Contract assets1,472
Intangible assets4,510
Goodwill10,285
Accounts payable and accrued liabilities(3,345)
Deferred revenue(543)
Total purchase price$17,602
We have assigned the goodwill to the Software and Sensors segment. Identifiable definite-lived intangible assets were assigned a total weighted average amortization period of 5.1 years. VIEVU has been included in our consolidated results of operations subsequent to the acquisition date. Revenue and loss from operations included in our condensed consolidated financial statements from the acquisition date through September 30, 2018 were $5.4 million and $2.6 million, respectively. Pro forma results of operations for VIEVU have not been presented because they are not material to the consolidated results of operations. In connection with the acquisition, we incurred and expensed costs of approximately $0.8 million, which included legal, accounting and other third-party expenses related to the transaction. Subsequent to the acquisition date, we recorded an expense of $0.5 million related to purchase commitments assumed in the VIEVU business combination that exceeded estimated future demand. In October 2018, a customer experienced a camera overheating incident on a VIEVU camera. As a result, we anticipate that this customer will transition to Axon technology sooner than previously expected. This may have an impact on our purchase commitment liability or on our inventory reserve during the quarter ending December 31, 2018; however, we cannot reasonably estimate a range of possible losses at this time.
Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations


The following discussion and analysis of our financial condition as of SeptemberJune 30, 2018,2019, and results of operations for the three and ninesix months ended SeptemberJune 30, 20182019 and 2017,2018, should be read in conjunction with the condensed consolidated financial statements and related notes included in this Report on Form 10-Q and those in our 20172018 Annual Report on Form 10-K filed with the SEC on March 1, 2018.February 27, 2019. This discussion contains forward-looking statements that involve risks and uncertainties. Our actual results may differ materially from those anticipated in such forward-looking statements as a result of certain factors, including but not limited to those described under “Risk Factors” in our 20172018 Annual Report on Form 10-K and included in Part II, Item 1A of this Report on Form 10-Q.10-K. See also "Special Note Regarding Forward-Looking Statements" on page ii of this Report on Form 10-Q.


Overview

Axon Enterprise, Inc.’s (the “Company” or “Axon” or “we” or “our”)is a market-leading provider of connected public safety technology solutions. Our core mission is to protect life. We are highly focused on disrupting existing categories and bringing public safety technology into the 21st century. We are the market leader in the development, manufacture and sale of conducted electrical weapons (“CEWs”) and other electronic weapons designed for use in law enforcement, military, corrections, private security and personal defense. We have also developed a fully integratedfulfill that mission through developing hardware and cloud-based software solution to provide our law enforcement customersproducts that advance the capabilities to capture, securely store, manage, sharelong term objectives of a) obsoleting the bullet, b) reducing social conflict, and analyze videoc) enabling a fair and other digital evidence.effective justice system.


Our strategic growth areas are TASER weapons, Sensors hardware including on-officer body cameras and Axon Fleet in-car video systems, our Axon Evidence connected software network, and Axon Records and Computer Aided Dispatch software. These value streams exist within an estimated $8.4 billion total addressable market, comprising TASER weapons ($1.8 billion), hardware sensors ($0.8 billion), and cloud-based public safety software ($5.8 billion.)
The $1.8 billion TASER Weapons total addressable market estimates 660,000 domestic patrol officers at an average revenue of $60 per user per month and 1,800,000 immediately addressable international patrol officers at an average revenue of $60 per user per month, including the weapon, cartridges, batteries, and enhanced services currently under development, and reflects current Axon listed pricing.
The $5.8 billion cloud-based public safety software total addressable market estimates 2,100,000 public safety employees with annual records management & computer aided dispatch revenue reflecting an average of $100 per user per month, based on a discount to estimated market pricing and analysis of current existing records management systems (“RMS”) and computer aided dispatch (“CAD”) contracts, 1,000,000 domestic police officers with advanced intelligence and analytics at an average of $100 per user per month based on estimated market pricing, 1,000,000 domestic patrol officers with digital evidence management revenue of $63 per user per month, which reflects Axon current listed software pricing, 1,000,000 immediately addressable international officers with annual revenue of $63 per user per month based on our current listed software pricing, and 400,000 domestic patrol vehicles evidence management license revenue of $77 per user per month, which reflects 60% allocation to software of our $129 per month listed Axon Fleet pricing.
The hardware sensors $0.8 billion total addressable market estimates 660,000 domestic patrol officers and 1,000,000 immediately addressable international officers with annual camera, dock and other hardware sensors including Signal Sidearm with revenue of $30 per user per month based on our listed pricing, and 400,000 domestic patrol vehicles with annual hardware revenue of $52 per user per month based on 40% of allocation to hardware of our $129 per month listed pricing.
Our long-term financial strategy includes shifting our revenue, contracts, and cash flows from book-and-ship hardware transactions to multi-element, multi-year, subscription or recurring payment plans. Duringrevenues for the three months ended SeptemberJune 30, 2018, 53%2019 were $112.4 million, an increase of $13.1 million, or 13.2%, from the comparable period in the prior year. We had a loss from operations of $1.3 million compared to income from operations of $5.3 million for the same period in the prior year. The decrease in operating results was due to an increase in cost of sales as well as investments over the past year for additional headcount in research and development and sales, general and administrative functions to support continued and future growth. Additionally, margins were compressed related to the rollout of our consolidated revenues were recognized from contracts with multiple performance obligations, while within ournewest TASER Weapons and Software and Sensors segments, approximately 26% and 96%, respectively, were recognized from contracts containing multiple performance obligations. Recurring revenue refersdevice. For the three months ended June 30, 2019, we recorded net income of $0.7 million compared to those contracts with multiple performance obligations, which we break out in more detail$8.5 million for the comparable period in the Critical Accounting Estimates.prior year.
As
Our revenues for the six months ended June 30, 2019 were $228.2 million, an increase of September 30, 2018, we have booked 325,200 cloud-based software licenses on$27.7 million, or 13.8%, from the Axon Cloud networkcomparable period in the prior year. We had income from operations of $1.4 million compared to $18.9 million  for the same period in the prior year. The decrease in operating results was due to increased cost of sales, selling, general and we have annual recurring run-rate Axon Cloudadministrative expenses, and Sensorsresearch and Other revenue of $101.6 million. Annual recurring run-rate revenue is calculated by annualizing our most previous reported month's recurring license, integration, warrantydevelopment expenses to support continued and storage revenue. Our long-term goal isfuture growth. Margins were compressed related to transition a majoritythe rollout of our customersnewest TASER device and increased data storage expenses. For the six months ended June 30, 2019, we recorded net income of $7.2 million compared to recurring payment plan or subscription contracts.
We are also highly focused on driving operating leverage and profitability within our two reportable segments, TASER Weapons and Software and Sensors.$21.4 million for the comparable period in the prior year.


20182019 Outlook


For the year ending December 31, 2018,2019, we expect revenue growthto be in the range of between 18%$485 million to $495 million. We expect stock-based compensation expenses to be approximately $35 million for the full year, which is subject to change depending on our assessment of the probability of attaining operational metrics for the CEO Performance Award and 20% as compared toXSU awards, and on the year ended December 31, 2017.expected timing of such attainment. We expect a normalized income tax rate of between 20% and 25%; this rate can fluctuate depending on geography of income and the effects of discrete items, including changes in our stock price. We anticipate investing in capital expenditures in the range of $10 million to $12 million.

We have historically experienced higher net sales in our second and fourth quarters compared to other quarters in our fiscal year due primarily to municipal budget cycles. For the quarter ending December 31, 2018, due to the expected 2019 shipment timing for TASER 7, we anticipate lower sales for our TASER Weapons segment.

Results of Operations


Three Months Ended SeptemberJune 30, 20182019 Compared to the Three Months Ended SeptemberJune 30, 20172018
The following table presents data from our condensed consolidated statements of operations as well as the percentage relationship to total net sales of items included in our statements of operations (dollars in thousands):
 Three Months Ended September 30,
 2018 
2017 (1)
Net sales from products$80,923
 77.2 % $73,985
 82.0 %
Net sales from services23,913
 22.8
 16,277
 18.0
Net sales104,836
 100.0
 90,262
 100.0
Cost of product sales32,953
 31.4
 34,573
 38.3
Cost of service sales6,250
 6.0
 5,924
 6.6
Cost of sales39,203
 37.4
 40,497
 44.9
Gross margin65,633
 62.6
 49,765
 55.1
Operating expenses:       
Sales, general and administrative39,685
 37.8
 36,398
 40.3
Research and development21,982
 21.0
 14,166
 15.7
Total operating expenses61,667
 58.8
 50,564
 56.0
Income (loss) from operations3,966
 3.8
 (799) (0.9)
Interest and other income, net1,274
 1.2
 1,430
 1.6
Income before provision for income taxes5,240
 5.0
 631
 0.7
Provision for (benefit from) income taxes(471) (0.4) 209
 0.2
Net income$5,711
 5.4 % $422
 0.5 %
(1) Amounts for the three months ended September 30, 2017 have not been adjusted under the modified retrospective method of adoption of Topic 606, and are presented consistent with the prior period amounts reported under ASC 605.
 Three Months Ended June 30,
 2019 2018
Net sales from products$80,391
 71.5 % $76,721
 77.3 %
Net sales from services31,971
 28.5
 22,505
 22.7
Net sales112,362
 100.0
 99,226
 100.0
Cost of product sales38,220
 34.0
 31,087
 31.4
Cost of service sales8,582
 7.6
 4,996
 5.0
Cost of sales46,802
 41.6
 36,083
 36.4
Gross margin65,560
 58.4
 63,143
 63.6
Operating expenses:       
Sales, general and administrative43,362
 38.6
 39,343
 39.6
Research and development23,493
 20.9
 18,501
 18.6
Total operating expenses66,855
 59.5
 57,844
 58.2
Income (loss) from operations(1,295) (1.1) 5,299
 5.4
Interest and other income (expense), net1,845
 1.6
 (295) (0.3)
Income before provision for income taxes550
 0.5
 5,004
 5.1
Provision for (benefit from) income taxes(188) (0.2) (3,481) (3.5)
Net income$738
 0.7 % $8,485
 8.6 %
The following table presents our revenues disaggregated by geography (in thousands):
Three Months Ended September 30,Three Months Ended June 30,
2018 
2017 (1)
2019 2018
United States$88,125
 84% $73,203
 81%$93,594
 83% $78,731
 79%
Other countries16,711
 16
 17,059
 19
18,768
 17
 20,495
 21
Total$104,836
 100% $90,262
 100%$112,362
 100% $99,226
 100%
(1) Amounts for the three months ended September 30, 2017 have not been adjusted under the modified retrospective method of adoption of Topic 606, and are presented consistent with
International revenue decreased slightly compared to the prior year comparable period, amounts reported under ASC 605.driven primarily by lower sales in Canada.

Net Sales
Net sales by product line were as follows (dollars in thousands):
Three Months Ended September 30, 
Dollar
Change
 
Percent
Change
Three Months Ended June 30, 
Dollar
Change
 
Percent
Change
2018 
2017 (1)
 2019 2018 
TASER Weapons segment:           
TASER segment:           
TASER 7$9,298
 8.3% $
 % $9,298
 *
TASER X26P$17,998
 17.2% $13,264
 14.7% $4,734
 35.7 %10,382
 9.2
 18,146
 18.3
 (7,764) (42.8)
TASER X220,392
 19.4
 22,717
 25.2
 (2,325) (10.2)14,087
 12.5
 18,362
 18.5
 (4,275) (23.3)
TASER Pulse and Bolt1,402
 1.3
 1,069
 1.2
 333
 31.2
1,118
 1.0
 1,101
 1.1
 17
 1.5
Single cartridges18,406
 17.6
 17,474
 19.4
 932
 5.3
19,293
 17.3
 17,243
 17.4
 2,050
 11.9
Axon Evidence and cloud services109
 0.1
 
 
 109
 *
Extended warranties4,123
 3.9
 3,086
 3.4
 1,037
 33.6
4,482
 4.0
 3,738
 3.8
 744
 19.9
Other1,345
 1.3
 1,806
 2.0
 (461) (25.5)1,803
 1.6
 2,034
 2.0
 (231) (11.4)
Total TASER Weapons segment63,666
 60.7
 59,416
 65.9
 4,250
 7.2
Total TASER segment60,572
 54.0
 60,624
 61.1
 (52) (0.1)
Software and Sensors segment:        
 

        
 

Axon Body4,744
 4.5
 4,527
 5.0
 217
 4.8
5,612
 5.0
 4,780
 4.8
 832
 17.4
Axon Flex1,325
 1.3
 2,563
 2.8
 (1,238) (48.3)1,623
 1.4
 1,535
 1.5
 88
 5.7
Axon Fleet1,809
 1.7
 1,113
 1.2
 696
 62.5
3,120
 2.8
 2,715
 2.7
 405
 14.9
Axon Dock2,178
 2.1
 2,639
 2.9
 (461) (17.5)2,731
 2.4
 2,119
 2.1
 612
 28.9
Axon Evidence and cloud services23,915
 22.8
 16,200
 18.0
 7,715
 47.6
31,821
 28.3
 20,357
 20.6
 11,464
 56.3
TASER Cam717
 0.7
 922
 1.0
 (205) (22.2)1,044
 0.9
 762
 0.8
 282
 37.0
Extended warranties3,161
 3.0
 1,945
 2.2
 1,216
 62.5
4,420
 3.9
 2,870
 2.9
 1,550
 54.0
Other3,321
 3.2
 937
 1.0
 2,384
 254.4
1,419
 1.3
 3,464
 3.5
 (2,045) (59.0)
Total Software and Sensors segment41,170
 39.3
 30,846
 34.1
 10,324
 33.5
51,790
 46.0
 38,602
 38.9
 13,188
 34.2
Total net sales$104,836
 100.0% $90,262
 100.0% $14,574
 16.1 %$112,362
 100.0% $99,226
 100.0% $13,136
 13.2 %
(1) Amounts for the three months ended September 30, 2017 have not been adjusted under the modified retrospective method of adoption of Topic 606, and are presented consistent with the prior period amounts reported under ASC 605.* Not applicable
Net unit sales for TASER Weapons handles and othersegment products and Software and Sensors segment products were as follows:
Three Months Ended September 30, 
Unit
Change
 
Percent
Change
Three Months Ended June 30, 
Unit
Change
 
Percent
Change
2018 2017 2019 2018 
TASER 78,135
 
 8,135
 *
TASER X26P18,842
 13,472
 5,370
 39.9 %9,493
 18,664
 (9,171) (49.1)
TASER X216,729
 21,896
 (5,167) (23.6)9,759
 15,537
 (5,778) (37.2)
TASER Pulse and Bolt3,750
 2,944
 806
 27.4
3,631
 3,158
 473
 15.0
Cartridges598,119
 643,077
 (44,958) (7.0)606,220
 611,136
 (4,916) (0.8)
Axon Body17,622
 28,669
 (11,047) (38.5)20,346
 20,407
 (61) (0.3)
Axon Flex3,487
 8,298
 (4,811) (58.0)3,508
 3,281
 227
 6.9
Axon Fleet1,601
 1,598
 3
 0.2
2,441
 2,079
 362
 17.4
Axon Dock3,525
 6,440
 (2,915) (45.3)3,408
 4,534
 (1,126) (24.8)
TASER Cam1,339
 1,512
 (173) (11.4)1,716
 1,491
 225
 15.1
*Not applicable
Net sales for the TASER Weapons segment decreased 0.1% primarily due to a net decrease of $2.7 million in TASER device sales, partially offset by increased 7.2% primarily ascartridge and warranty revenue. Cartridge revenue increased compared to the prior year comparable period based on higher average selling prices, offsetting the decrease in the number of units sold. The decreased unit sales of X2 and X26P were partially offset by higher average selling prices. As expected, we have started to see a resultshift to purchases of increased sales under the Officer Safety Planour newest device, TASER 7, from legacy X2 and TASER 60 purchase programs.X26P devices. We expect recurring payment plan subscriptions to increase substantially in 2019 as we drive sales of TASER 7, which includes a software subscription with Axon Evidence. Sales were negatively impacted during

the three months ended June 30, 2019 due to an inventory shortfall impacting TASER 7 devices and cartridges. Our TASER 7 battery component supplier was unable to meet our quality standards as it scaled production; we have worked closely with the supplier to help it scale its manufacturing process and it is now producing at volume. As a result of the supplier not being able to timely fulfill our production needs, approximately $3 million of forecasted TASER 7 sales shifted from the three months ended June 30, 2019 to the three months ending September 30, 2019. Additionally, a design change involving a TASER 7 cartridge component led to a shortage of cartridges and therefore lower-than-expected revenue of approximately $3 million in the three months ended June 30, 2019. This design change is part of a cost optimization program to improve the long-term cost structure of our TASER 7 cartridges. We expect to fulfill this cartridge demand over the remainder of 2019.
Net sales for the Software and Sensors segment increased 33.5%34.2% as we continued to add users and associated devices to our network during the three months ended SeptemberJune 30, 2018, resulting2019. The increase in steady product revenues and a higherthe aggregate number of aggregate users which resulted in increased Axon Evidence and extended warranty revenues of $7.7$11.5 million and $1.2$1.6 million, respectively. Additionally, we recorded a $0.7 million increase in revenue related to Axon Fleet, our in-car camera system that was released toward the end of 2017.

To gain more immediate feedback regarding activity for Software and Sensors products and services, we also review bookings for these products. We consider bookings to be a statistical measure defined as the sales price of orders (not invoiced sales), including contractual optional periods we expect to be exercised, net of cancellations, inclusive of renewals, placed in the relevant fiscal period, regardless of when the products or services ultimately will be provided. Most bookings will be invoiced in subsequent periods. Due to municipal government funding rules, in some cases certain of the future period amounts included in bookings are subject to budget appropriation or other contract cancellation clauses. Although we have entered into contracts for the delivery of products and services in the future and anticipate the contracts will be fulfilled, if agencies do not exercise contractual options, do not appropriate funds in future year budgets, or do enact a cancellation clause, revenue associated with these bookings may not ultimately be recognized, resulting in a future reduction to bookings. Bookings related to our Software and Sensors segment, net of cancellations, were $92.9$142.0 million and $78.0$88.9 million during the three months ended SeptemberJune 30, 20182019 and 2017,2018, respectively, an increase of $14.9$53.1 million, or 19.1%59.8%.
The chart below illustrates our Software and Sensors segment quarterly bookings for each of the previous six fiscal quarters (in thousands):
chart-5433719b85995cd4889.jpgbookingschartq22019v3.jpg


Cost of Product and Service Sales
CostWithin the TASER segment, cost of product and service sales was $39.2 million and $40.5increased to $24.3 million for the three months ended SeptemberJune 30, 2018 and 2017, respectively, a decrease of $1.3 million, or 3.2%. As a percentage of net sales, cost of product and service sales decreased to 37.4% for the three months ended September 30, 2018 compared to 44.9% during the same period in 2017. We noted no significant changes in variable manufacturing costs during the three months ended September 30, 2018 as compared to the same period in 2017.
Within the TASER Weapons segment, cost of product sales increased slightly to $19.3 million for the three months ended September 30, 20182019 from $19.2$17.7 million for the same period in 2017.2018. Cost as a percentage of sales decreasedincreased to 30.2%40.1% from 32.4%29.2%. The increase in cost of product sales was primarily attributable to the mix of products, with higher cost per unit for TASER 7 handles and cartridges as a resultwell as higher depreciation on new production equipment for the TASER 7. Additionally, cost of theproduct sales mix, which resultedincluded approximately $1.6 million in increased revenue per unit.expense for TASER 7 ramp-up and optimization costs related to scrap, obsolete inventory, and higher labor costs.
Within the Software and Sensors segment, cost of product and service sales decreasedincreased to $19.9$22.5 million for the three months ended SeptemberJune 30, 20182019 from $21.3$18.4 million for the same period in 2017 primarily2018. Cost as a percentage of sales decreased to 43.5% from 47.7%. Cost of product sales remained relatively flat compared to the prior year comparable period. Cost of service sales increased $3.6 million driven by an increase of $1.7 million in professional services expenses following the acquisition of VIEVU in May 2018 and due to the reduction of non-recurring expenses related to our data migration to our new cloud-storage provider that was completed in 2018, as well as increased leveraging of fixed costs related to cloud-storage.
Gross Margin
Gross margin increased $15.9 million to $65.6 million forsignificant Fleet installations during the three months ended SeptemberJune 30, 2018 compared to $49.8 million for the same period in 2017. As a percentage of net sales, gross margin increased to 62.6% for the three months ended September 30, 2018 compared to 55.1% for the same period in 2017, which was primarily attributable to increased leveraging of fixed costs related to cloud storage.2019.
Gross Margin
As a percentage of net sales, gross margin for the TASER Weapons segment increaseddecreased to 69.8%59.9% from 67.6%70.8% for the three months ended SeptemberJune 30, 2019 and 2018, respectively. TASER 7 devices have a lower average selling price per unit than legacy products due to the bundle of products and 2017, respectively. The increase was primarily driven by sales mix.

services included, as well as trade in credits provided to certain customers purchasing TASER 7 devices.
As a percentage of net sales, gross margin for the Software and Sensors segment was 51.5% and 31.1%increased to 56.5% from 52.3% for the three months ended SeptemberJune 30, 20182019 and 2017,2018, respectively. Within the Software and Sensors segment, hardware gross margin was 20.6%30.1% for the three months ended SeptemberJune 30, 20182019 compared to a negative 5.3%16.7% for the same period in 2017,2018, while the service margins were 73.9%73.0% and 63.6%77.8% during those same periods, respectively. The increase in hardware gross margins during the three months ended September 30, 2018 was primarily attributable to accounting changes required under the new revenue accounting standard. Previously, the level of discounting in our contracts resulted in a portion of the contractual consideration allocated to the delivered hardware being recognized as revenue ratably over the Axon Evidence subscription term, while the full cost of the product was recognized when the hardware was delivered to the customer resulting in lower gross margins initially. Under the new revenue accounting standard, generally the full amount of revenue related to the delivered hardware is recognized in the period in which it is delivered, resulting in better matching of the revenues and related costs. The increase in service margins during the three months ended September 30, 2018 as compared to the same period in 2017 was attributable to the reduction of non-recurring expenses related to our data migration to our new cloud-storage provider that was completed in 2018, as well as increased leveraging of fixed costs related to cloud-storage.
Sales, General and Administrative Expenses
Sales, general and administrative ("SG&A)&A") expenses were comprised as follows (dollars in thousands):
Three Months Ended September 30, Dollar
Change
 Percent
Change
Three Months Ended June 30, Dollar
Change
 Percent
Change
2018 
2017 (1)
 2019 2018 
Total sales, general and administrative expenses$39,685
 $36,398
 $3,287
 9.0$43,362
 $39,343
 $4,019
 10.2
Sales, general, and administrative as a percentage of net sales37.8% 40.3%   38.6% 39.6%   
(1) Amounts relatedStock-based compensation expense increased $2.2 million in comparison to commissions expense for the three months ended September 30, 2017 have not been adjusted under the modified retrospective method of adoption of Topic 606, and are presented consistent with the prior period amounts reported under ASC 605.
Within the TASER Weapons segment, SG&A expenses increased $2.0 million, or 9.7%, to $22.6 million during the three months ended September 30, 2018 as compared to $20.6 million for the three months ended September 30, 2017. The increasequarter, which was primarily attributable to stock-based compensationan increase of $0.9 million in expense of $1.3 million related to the CEO Performance Award.
Within the SoftwareAward and Sensors segment, SG&Aexpense of $0.8 million related to our XSPP. Sales and marketing expenses increased $1.3$2.9 million, or 8.1%,driven primarily by a $1.7 million increase in commissions tied to $17.1 million duringhigher revenues. Also contributing to the increase were higher promotions, sponsorships, and tradeshow expenses primarily related to Axon Accelerate, our annual tech conference for public safety, for which attendance increased by nearly 50% over the prior year.
During the three months ended SeptemberJune 30, 2018 as compared2019, we abandoned certain capitalized software assets related to $15.8 million for the same periodimplementation work on an enterprise resource planning system conversion, resulting in 2017. The increase was primarily attributable to an impairment charge of $2.0$1.3 million, related towhich was included in sales, general and administrative expense in the abandonmentaccompanying condensed consolidated statement of certain developed technology acquired in a business combination. Partially offsetting the increase wereoperations. This expense was offset by decreases in professional fees and severanceother SG&A expenses, including bad debt expense.

In October 2018, a customer experienced a camera overheating incident on a VIEVU camera. As a result, we anticipate that this customer will transition to Axon technology sooner than previously expected. This may have an impact on our purchase commitment liability or on our inventory reserve during the quarter ending December 31, 2018; however, we cannot reasonably estimate a range of possible losses at this time. The amount of expense ultimately recorded will be determined by supplier negotiation, shipment timing, and our ability to utilize VIEVU cameras that were produced but are no longer wanted by this customer.
Research and Development Expenses
Research and development ("R&D") expenses were comprised as follows (dollars in thousands):
Three Months Ended September 30, Dollar
Change
 Percent
Change
Three Months Ended June 30, Dollar
Change
 Percent
Change
2018 2017 2019 2018 
Total research and development expenses$21,982
 $14,166
 $7,816
 55.2$23,493
 $18,501
 $4,992
 27.0
Research and development as a percentage of net sales21.0% 15.7%   20.9% 18.6%   
OurThe increase in R&D expense was fully attributable to our Software and Sensors segment was responsible for 62% of the overall increase in R&D expense.segment. Within the TASER Weapons segment, R&D expense increased $3.0decreased $0.9 million, ofdue to lower headcount and a decrease in hardware spending, which $1.9 million was related to increased salaries, benefits and bonus as we continue to invest in personnel allocatedhigher during the

prior year comparable period leading up to the development of new CEW related technologies.TASER 7 launch. R&D expense for the Software and Sensors segment increased $4.8$5.9 million, primarily due to a $2.6$4.9 million increase related to salaries and benefits, inclusive of stock-based compensation. We expect R&D expense to continue to increase in absolute dollars as we invest in the deployment of new CEW technologies and focus on growing the Software and Sensors segment as we add headcount and additional

resources to develop new products and services to further advance our scalable cloud-connected device platform. These investments include Axon Records and computer-aided dispatch software. We believe that these investments will result in an increase in our subscription revenue base, which over time will result in revenue increasing faster than the increase in SG&A expenses and R&D costs, as we reach economies of scale.
Interest and Other Income (Expense), Net
Interest and other income (expense), net was $1.3$1.8 million for the three months ended SeptemberJune 30, 20182019 compared to $1.4a net expense of $0.3 million for the same period in 2017. During the three months ended September 30, 2018, interest and other income amounts consisted2018. The increase was primarily ofattributable to increased investment interest income related toon our sales under hardware installment sale planshigher average balance of cash, cash equivalents and investment and interest income totaling $1.7 million, which was partially offset by losses on foreign currency transaction adjustments of $0.4 million. During the three months ended September 30, 2017, interest and other income included investment and interest income of $0.4 million and $1.1 million of gains on foreign currency transaction adjustments.investments.
Provision for Income Taxes
The provision for income taxes was a benefit of $0.5$0.2 million for the three months ended SeptemberJune 30, 2018,2019, which was an effective tax rate of (9.0)(34.2)%. Our estimated full year effective income tax rate for 2018,2019, before discrete period adjustments, is 24.0%21.4%, which is moregreater than the federal statutory rate, primarily due to state taxes and non-deductible expenses for items such as meals and entertainment, executive compensation limitationlimited under IRC Section 162(m), lobbying fees, and an income inclusion from GILTI, offset by a reduction for FDII. This was partially offset byFDII and R&D tax credit deductions.credits. The effective tax rate was favorably impacted by a $2.0$0.6 million discrete tax benefit primarily associated with windfalls related to stock-based compensation for RSUs that vested or stock options that were exercised during the three months ended SeptemberJune 30, 2018.2019. This was offset by an unfavorable discrete item of $0.3 million related to the write off of certain deferred tax assets related to future stock compensation vests for certain officers for whom deductibility of compensation is limited by IRC Section 162(m).
Net Income
Our net income increaseddecreased by $5.3$7.7 million to $5.7$0.7 million for the three months ended SeptemberJune 30, 20182019 compared to $0.4$8.5 million for the same period in 2017.2018. Net income per basic and diluted share was $0.10$0.01 for the three months ended SeptemberJune 30, 20182019 compared to $0.01$0.15 per basic and diluted share for the same period in 2017.2018.

Three Months Ended SeptemberJune 30, 20182019 Compared to the Three Months Ended June 30, 2018March 31, 2019
Net Sales
Net sales by product line were as follows (dollars in thousands):
Three Months Ended September 30, 2018 
Three Months Ended
June 30, 2018
 Dollar
Change
 Percent
Change
Three Months Ended June 30, 2019 Three Months Ended March 31, 2019 Dollar
Change
 Percent
Change
TASER Weapons segment:           
TASER segment:           
TASER 7$9,298
 8.3% $9,954
 8.6% $(656) (6.6)%
TASER X26P$17,998
 17.2% $18,146
 18.3% $(148) (0.8)%10,382
 9.2
 15,872
 13.7
 (5,490) (34.6)
TASER X220,392
 19.4
 18,362
 18.5
 2,030
 11.1
14,087
 12.5
 13,085
 11.3
 1,002
 7.7
TASER Pulse and Bolt1,402
 1.3
 1,101
 1.1
 301
 27.3
1,118
 1.0
 670
 0.6
 448
 66.9
Single cartridges18,406
 17.6
 17,243
 17.4
 1,163
 6.7
19,293
 17.3
 19,160
 16.6
 133
 0.7
Axon Evidence and cloud services109
 0.1
 36
 
 73
 *
Extended warranties4,123
 3.9
 3,738
 3.8
 385
 10.3
4,482
 4.0
 4,316
 3.7
 166
 3.8
Other1,345
 1.3
 2,034
 2.0
 (689) (33.9)1,803
 1.6
 2,298
 2.0
 (495) (21.5)
Total TASER Weapons segment63,666
 60.7
 60,624
 61.1
 3,042
 5.0
Total TASER segment60,572
 54.0
 65,391
 56.5
 (4,819) (7.4)
Software and Sensors segment:                      
Axon Body4,744
 4.5
 4,780
 4.8
 (36) (0.8)5,612
 5.0
 6,445
 5.6
 (833) (12.9)
Axon Flex1,325
 1.3
 1,535
 1.5
 (210) (13.7)1,623
 1.4
 1,224
 1.1
 399
 32.6
Axon Fleet1,809
 1.7
 2,715
 2.7
 (906) (33.4)3,120
 2.8
 3,516
 3.0
 (396) (11.3)
Axon Dock2,178
 2.1
 2,119
 2.1
 59
 2.8
2,731
 2.4
 3,312
 2.9
 (581) (17.5)
Axon Evidence and cloud services23,915
 22.8
 20,357
 20.6
 3,558
 17.5
31,821
 28.3
 27,618
 23.7
 4,203
 15.2
TASER Cam717
 0.7
 762
 0.8
 (45) (5.9)1,044
 0.9
 903
 0.8
 141
 15.6
Extended warranties3,161
 3.0
 2,870
 2.9
 291
 10.1
4,420
 3.9
 4,930
 4.3
 (510) (10.3)
Other3,321
 3.2
 3,464
 3.5
 (143) (4.1)1,419
 1.3
 2,471
 2.1
 (1,052) (42.6)
Total Software and Sensors segment41,170
 39.3
 38,602
 38.9
 2,568
 6.7
51,790
 46.0
 50,419
 43.5
 1,371
 2.7
Total net sales$104,836
 100.0% $99,226
 100.0% $5,610
 5.7 %$112,362
 100.0% $115,810
 100.0% $(3,448) (3.0)%
*Not applicable.
Net unit sales for TASER segment products and Software and Sensors segment products were as follows:
 Three Months Ended June 30, 2019 Three Months Ended March 31, 2019 Unit
Change
 Percent
Change
TASER 78,135
 8,835
 (700) (7.9)%
TASER X26P9,493
 14,985
 (5,492) (36.6)
TASER X29,759
 9,861
 (102) (1.0)
TASER Pulse and Bolt3,631
 1,253
 2,378
 189.8
Cartridges606,220
 616,517
 (10,297) (1.7)
Axon Body20,346
 25,848
 (5,502) (21.3)
Axon Flex3,508
 3,591
 (83) (2.3)
Axon Fleet2,441
 1,735
 706
 40.7
Axon Dock3,408
 4,994
 (1,586) (31.8)
TASER Cam1,716
 1,741
 (25) (1.4)
Net sales within the TASER Weapons segment increased 5.0% primarilydecreased by approximately $4.8 million or 7.4% as compared to the prior quarter. Sales were negatively impacted by a total of $6.0 million during the three months ended June 30, 2019 due to the timing of customer ordersinventory shortfall impacting TASER 7 devices and deployments.cartridges. Revenues for TASER devices decreased $4.7 million driven by the decrease in unit sales, partially offset by higher average selling prices for X2 and X26P legacy devices. Trade-in credits for certain customers negatively impacted the average selling price for TASER 7 devices.

Within the Software and Sensors segment, net sales increased 6.7%2.7% as we continued to add users and associated devices to our network during the three months ended June 30, 2019. The increase in the aggregate number of users resulted in increased Axon Evidence revenues of $4.2 million as we continued to add users to our network, resulting in higher service revenues in addition to anrevenues. The increase was partially offset by a decline in hardware revenues.
Net unit Unit sales for TASER Weapons handles and other products and Software and Sensors segment products were as follows:Axon Body cameras slowed in advance of the release of the new Axon Body 3, which is anticipated in the third quarter of 2019.

 Three Months Ended September 30, 2018 Three Months Ended June 30, 2018 Unit
Change
 Percent
Change
TASER X26P18,842
 18,664
 178
 1.0 %
TASER X216,729
 15,537
 1,192
 7.7
TASER Pulse and Bolt3,750
 3,158
 592
 18.7
Cartridges598,119
 611,136
 (13,017) (2.1)
Axon Body17,622
 20,407
 (2,785) (13.6)
Axon Flex3,487
 3,281
 206
 6.3
Axon Fleet1,601
 2,079
 (478) (23.0)
Axon Dock3,525
 4,534
 (1,009) (22.3)
TASER Cam1,339
 1,491
 (152) (10.2)

NineSix Months Ended SeptemberJune 30, 20182019 Compared to the NineSix Months Ended SeptemberJune 30, 20172018
The following table presents data from our condensed consolidated statements of operations as well as the percentage relationship to total net sales of items included in our statements of operations (dollars in thousands):
 Nine Months Ended September 30,
 2018 
2017 (1)
Net sales from products$238,618
 78.2 % $208,351
 83.6%
Net sales from services66,659
 21.8
 40,796
 16.4
Net sales305,277
 100.0
 249,147
 100.0
Cost of product sales96,474
 31.6
 91,817
 36.9
Cost of service sales15,566
 5.1
 13,258
 5.3
Cost of sales112,040
 36.7
 105,075
 42.2
Gross margin193,237
 63.3
 144,072
 57.8
Operating expenses:       
Sales, general and administrative114,787
 37.6
 99,079
 39.8
Research and development55,602
 18.2
 39,618
 15.8
Total operating expenses170,389
 55.8
 138,697
 55.6
Income (loss) from operations22,848
 7.5
 5,375
 2.2
Interest and other income2,242
 0.7
 3,320
 1.3
Income before provision for income taxes25,090
 8.2
 8,695
 3.5
Provision for (benefit from) income taxes(2,032) (0.7) 1,417
 0.6
Net income$27,122
 8.9 % $7,278
 2.9%
(1) Amounts for the nine months ended September 30, 2017 have not been adjusted under the modified retrospective method of adoption of Topic 606, and are presented consistent with the prior period amounts reported under ASC 605.
 Six Months Ended June 30,
 2019 2018
Net sales from products$168,480
 73.8 % $157,695
 78.7 %
Net sales from services59,692
 26.2
 42,746
 21.3
Net sales228,172
 100.0
 200,441
 100.0
Cost of product sales77,820
 34.1
 63,521
 31.7
Cost of service sales15,875
 7.0
 9,316
 4.6
Cost of sales93,695
 41.1
 72,837
 36.3
Gross margin134,477
 58.9
 127,604
 63.7
Operating expenses:       
Sales, general and administrative86,254
 37.8
 75,102
 37.5
Research and development46,847
 20.5
 33,620
 16.8
Total operating expenses133,101
 58.3
 108,722
 54.3
Income from operations1,376
 0.6
 18,882
 9.4
Interest and other income, net4,158
 1.8
 968
 0.5
Income before provision for income taxes5,534
 2.4
 19,850
 9.9
Provision for (benefit from) income taxes(1,623) (0.7) (1,561) (0.8)
Net income$7,157
 3.1 % $21,411
 10.7 %
The following table presents our revenues disaggregated by geography (in thousands):
Nine Months Ended September 30,Six Months Ended June 30,
2018 
2017 (1)
2019 2018
United States$244,806
 80% $204,155
 82%$187,927
 82% $156,681
 78%
Other countries60,471
 20
 44,992
 18
40,245
 18
 43,760
 22
Total$305,277
 100% $249,147
 100%$228,172
 100% $200,441
 100%
(1) Amounts for the nine months ended September 30, 2017 have not been adjusted under the modified retrospective method of adoption of Topic 606, and are presented consistent with the prior period amounts reported under ASC 605.


International revenue grew 34.4%,decreased slightly compared to the prior year comparable period, driven primarily by strengthlarge sales in Australia,the prior year period in the Asia Pacific region and in Canada andthat did not recur in the U.K.current period.

Net Sales
Net sales by product line were as follows (dollars in thousands):
Nine Months Ended September 30, 
Dollar
Change
 
Percent
Change
Six Months Ended June 30, 
Dollar
Change
 
Percent
Change
2018 
2017 (1)
 2019 2018 
TASER Weapons segment:           
TASER segment:           
TASER 7$19,252
 8.4% $
 % $19,252
 *
TASER X26P$52,618
 17.2% $45,167
 18.1% $7,451
 16.5 %26,254
 11.5
 34,620
 17.3
 (8,366) (24.2)
TASER X262,686
 20.5
 57,755
 23.1
 4,931
 8.5
27,172
 11.9
 42,294
 21.1
 (15,122) (35.8)
TASER Pulse and Bolt3,849
 1.3
 2,892
 1.2
 957
 33.1
1,788
 0.8
 2,447
 1.2
 (659) (26.9)
Single cartridges51,763
 17.0
 49,005
 19.7
 2,758
 5.6
38,453
 16.8
 33,357
 16.6
 5,096
 15.3
Axon Evidence and cloud services145
 0.1
 
 
 145
 *
Extended warranties11,567
 3.8
 8,920
 3.6
 2,647
 29.7
8,798
 3.9
 7,444
 3.7
 1,354
 18.2
Other5,331
 1.7
 6,364
 2.6
 (1,033) (16.2)4,101
 1.8
 3,986
 2.0
 115
 2.9
Total TASER Weapons segment187,814
 61.5
 170,103
 68.3
 17,711
 10.4
Total TASER segment125,963
 55.2
 124,148
 61.9
 1,815
 1.5
Software and Sensors segment:                      
Axon Body15,082
 4.9
 11,725
 4.7
 3,357
 28.6
12,057
 5.3
 10,338
 5.2
 1,719
 16.6
Axon Flex4,529
 1.5
 7,889
 3.2
 (3,360) (42.6)2,847
 1.2
 3,204
 1.6
 (357) (11.1)
Axon Fleet6,640
 2.2
 1,113
 0.4
 5,527
 496.6
6,636
 2.9
 4,831
 2.4
 1,805
 37.4
Axon Dock7,332
 2.4
 7,409
 3.0
 (77) (1.0)6,043
 2.6
 5,154
 2.6
 889
 17.2
Axon Evidence and cloud services64,513
 21.2
 40,698
 16.3
 23,815
 58.5
59,439
 26.1
 40,598
 20.2
 18,841
 46.4
TASER Cam2,839
 0.9
 2,407
 1.0
 432
 17.9
1,947
 0.9
 2,122
 1.1
 (175) (8.2)
Extended warranties8,521
 2.8
 4,982
 2.0
 3,539
 71.0
9,350
 4.1
 5,360
 2.7
 3,990
 74.4
Other8,007
 2.6
 2,821
 1.1
 5,186
 183.8
3,890
 1.7
 4,686
 2.3
 (796) (17.0)
Total Software and Sensors segment117,463
 38.5
 79,044
 31.7
 38,419
 48.6
102,209
 44.8
 76,293
 38.1
 25,916
 34.0
Total net sales$305,277
 100.0% $249,147
 100.0% $56,130
 22.5 %$228,172
 100.0% $200,441
 100.0% $27,731
 13.8 %
(1) Amounts for the nine months ended September 30, 2017 have not been adjusted under the modified retrospective method of adoption of Topic 606, and are presented consistent with the prior period amounts reported under ASC 605.* Not applicable
Net unit sales for TASER Weapons handles and othersegment products and Software and Sensors segment products were as follows:
Nine Months Ended September 30, 
Unit
Change
 
Percent
Change
Six Months Ended June 30, 
Unit
Change
 
Percent
Change
2018 2017 2019 2018 
TASER 716,970
 
 16,970
 *
TASER X26P53,226
 47,031
 6,195
 13.2 %24,478
 34,384
 (9,906) (28.8)
TASER X252,767
 54,423
 (1,656) (3.0)19,620
 36,038
 (16,418) (45.6)
TASER Pulse and Bolt10,908
 8,863
 2,045
 23.1
4,884
 7,158
 (2,274) (31.8)
Cartridges1,742,207
 1,818,345
 (76,138) (4.2)1,222,737
 1,144,088
 78,649
 6.9
Axon Body59,798
 75,864
 (16,066) (21.2)46,194
 42,176
 4,018
 9.5
Axon Flex10,461
 20,772
 (10,311) (49.6)7,099
 6,974
 125
 1.8
Axon Fleet5,537
 1,598
 3,939
 246.5
4,176
 3,936
 240
 6.1
Axon Dock13,903
 19,584
 (5,681) (29.0)8,402
 10,378
 (1,976) (19.0)
TASER Cam6,358
 4,187
 2,171
 51.9
3,457
 5,019
 (1,562) (31.1)
*Not applicable
Net sales for the TASER Weapons segment increased 10.4%1.5% primarily as a result of increased cartridge revenue, partially offset by a net decrease of $4.9 million in TASER device sales. Cartridge revenues increased due to both increased unit sales underand an increase in average selling price. The decreased unit sales of X2 and X26P and consumer devices were partially offset by higher average selling prices. As expected, we have started to see a shift to purchases of our newest device, TASER 7, from legacy X2 and X26P devices. We expect recurring payment plan subscriptions to increase in 2019 as we drive sales of TASER 7, which includes a

software subscription with Axon Evidence. Sales were negatively impacted by a total of $6.0 million during the Officer Safety Planthree months ended June 30, 2019 due to the inventory shortfall impacting TASER 7 devices and TASER 60 payment programs.cartridges.
Net sales for the Software and Sensors segment increased 48.6%, primarily due34.0% as we continued to continued adoptionadd users and associated devices to our network during the six months ended June 30, 2019. The increase in the aggregate number of on-officer cameras and related technologies, including ourusers resulted in increased Axon Evidence digital evidence management software suite. Axon Evidenceand extended warranty revenues increased $23.8of $18.8 million primarily driven by the continued increase in active users on the platform. Weand $4.0 million, respectively. Additionally, we recorded a $5.5$1.8 million increase in revenue related to Axon Fleet.Fleet driven by increased pricing.



Cost of Product and Service Sales
Cost of product and service sales was $112.0 million and $105.1 million for the nine months ended September 30, 2018 and 2017, respectively, an increase of $6.9 million, or 6.6%. As a percentage of net sales, cost of product and service sales decreased to 36.7% for the nine months ended September 30, 2018 compared to 42.2% during the same period in 2017.
Within the TASER Weapons segment, cost of product sales increased to $57.5$47.5 million for the ninesix months ended SeptemberJune 30, 20182019 from $53.3$38.2 million for the same period in 2017 as a result of higher sales volumes, and decreased slightly2018. Cost as a percentage of sales increased to 30.6%37.7% from 30.8%. The increase in cost of product sales was primarily attributable to the mix of products, with higher cost per unit for TASER 7 handles and cartridges as well as higher depreciation on new production equipment for the nine months ended September 30, 2018 from 31.4%TASER 7. Additionally, cost of product sales included approximately $2.3 million in expense for the same period in 2017.TASER 7 ramp-up and optimization costs related to scrap, obsolete inventory, and higher labor costs.
Within the Software and Sensors segment, cost of product and service sales increased to $54.6$46.2 million for the ninesix months ended SeptemberJune 30, 20182019 from $51.7$34.6 million for the same period in 2017 as a result of higher sales volumes, and decreased2018. Cost as a percentage of sales decreased slightly to 46.4% for45.2% from 45.4%. Cost of product sales increased $5.0 million primarily driven by the nineimpact of increased units as well as increased freight and customs expenses. Cost of service sales increased $6.6 million driven by a $2.8 million increase in third party cloud data storage costs, and by a $2.8 million increase in professional services expense due to both significant Fleet installations during the six months ended SeptemberJune 30, 2018 from 65.4%2019 and an overall increase following the acquisition of VIEVU in May 2018. In June 2019, we entered into a purchase agreement for cloud data storage with a three year term beginning July 1, 2019. We expect that this agreement, in combination with moving certain data into archive storage, will limit our future storage costs at or near current levels, despite anticipated increases in the same period in 2017.amount of data stored.
Gross Margin
Gross margin increased $49.2 million to $193.2 million for the nine months ended September 30, 2018 compared to $144.1 million for the same period in 2017. As a percentage of net sales, gross margin increased to 63.3% for the nine months ended September 30, 2018 compared to 57.8% for the same period in 2017, which was primarily attributable to increased leveraging of fixed costs related to cloud storage.
As a percentage of net sales, gross margin for the TASER Weapons segment was 69.4% and 68.6%decreased to 62.3% from 69.2% for the ninesix months ended SeptemberJune 30, 2019 and 2018, respectively. TASER 7 devices have a lower average selling price per unit than legacy products due to the bundle of products and 2017, respectively.services included, as well as trade in credits provided to certain customers purchasing TASER 7 devices.
As a percentage of net sales, gross margin for the Software and Sensors segment was 53.6% and 34.6% for the nine months ended September 30, 2018 and 2017, respectively.increased slightly to 54.8% from 54.6%. Within the Software and Sensors segment, hardware gross margin was 23.2%29.2% for the ninesix months ended SeptemberJune 30, 2018 and negative 0.6%2019 compared to 24.6% for the same period in 2017,2018, while the service margins were 76.6%73.3% and 67.5%78.2% during those same periods, respectively. The increase in hardware gross margins during the nine months ended September 30, 2018 was primarily attributable to accounting changes required under the new revenue accounting standard. Previously, the level of discounting in our contracts resulted in a portion of the contractual consideration allocated to the delivered hardware being recognized as revenue ratably over the Axon Evidence subscription term, while the full cost of the product was recognized when the hardware was delivered to the customer, resulting in lower gross margins initially. Under the new revenue accounting standard, generally the full amount of revenue related to the delivered hardware is recognized in the period in which it is delivered resulting in better matching of the revenues and related costs. The increase in service margins during the nine months ended September 30, 2018 as compared to the same period in 2017 was attributable to the reduction of non-recurring expenses related to our data migration to our new cloud-storage provider that was completed in 2018, as well as increased leveraging of fixed costs related to cloud-storage.
Sales, General and Administrative Expenses
SG&A expenses were comprised as follows (dollars in thousands):
Nine Months Ended September 30, Dollar
Change
 Percent
Change
Six Months Ended June 30, Dollar
Change
 Percent
Change
2018 
2017 (1)
 2019 2018 
Total sales, general and administrative expenses$114,787
 $99,079
 $15,708
 15.9$86,254
 $75,102
 $11,152
 14.8
Sales, general, and administrative as a percentage of net sales37.6% 39.8%   37.8% 37.5%   
(1) Amounts relatedStock-based compensation expense increased $4.6 million in comparison to commissions expense for the nine months ended June 30, 2017 have not been adjusted under the modified retrospective method of adoption of Topic 606, and are presented consistent with the prior year comparable period, amounts reported under ASC 605.
Within the TASER Weapons segment, SG&A expense increased $10.5which was primarily attributable to an increase of $2.3 million or 18.9%, to $65.8 million during the nine months ended September 30, 2018 as compared to $55.3 million for the nine months ended September 30, 2017. Of the increase, $5.9 million related to higher salaries, benefits, bonus and stock-based compensation related primarily to sales and marketing, professional staff and general support staff, including $1.8 million of stock-based compensationin expense related to the CEO Performance Award. Additionally, professionalAward and consultingexpense of $1.2 million related to our XSPP. Salaries, benefits and bonus expenses increased $2.6 million primarily due to a continued increase in headcount. Sales and marketing expenses increased $3.8 million driven primarily by a $2.5 million increase in commissions tied to higher revenues and increased promotions, sponsorship, and tradeshow expenses primarily related to increased legal fees, and occupancy and depreciation expenses increased $1.1 million related to the expansion of our facilities over the past year.
Within the Software and Sensors segment, SG&A expense increased $5.2 million, or 11.9%, to $49.0 million during the nine months ended September 30, 2018 as compared to $43.8 million for the nine months ended September 30, 2017. The increaseAxon Accelerate.

was primarily attributable to increased costs related to sales and marketing, as well as higher occupancy and depreciation expenses related to the expansion of our facilities over the past year. Additionally, during the three months ended September 30, 2018, we abandoned certain developed technology acquired in a business combination resulting in an impairment charge of approximately $2.0 million.
Research and Development Expenses
R&D expenses were comprised as follows (dollars in thousands):
Nine Months Ended September 30, Dollar
Change
 Percent
Change
Six Months Ended June 30, Dollar
Change
 Percent
Change
2018 2017 2019 2018 
Total research and development expenses$55,602
 $39,618
 $15,984
 40.3$46,847
 $33,620
 $13,227
 39.3
Research and development as a percentage of net sales18.2% 15.8%   20.5% 16.8%   
OurThe increase in R&D expense was fully attributable to our Software and Sensors segment was responsible for 63% of the overall increase in R&D expense. Within the TASER Weapons segment, R&D expense increased $5.9 million, of which $4.4 million related to increased salaries, benefits and bonus as we continue to invest in personnel allocated to the development of new CEW related technologies. The $10.1 million increase insegment. R&D expense for the Software and Sensors segment wasincreased $13.4 million, primarily attributabledue to an $11.0 million increase of $9.3 million inrelated to salaries and benefits, inclusive of stock-based compensation. We expect R&D expense to continue to increase in absolute dollars as we invest in the deployment of new CEW technologies and focus on growing the Software and Sensors segment as we add headcount and additional resources to develop new products and services to further advance our scalable cloud-connected device platform. These investments include Axon Records and computer-aided dispatch software. We believe that these investments will result in an increase in our subscription revenue base, which over time will result in revenue increasing faster than the increase in SG&A expenses and R&D costs, as we reach economies of scale.
Interest and Other Income (Expense), Net
Interest and other income, net was $2.2$4.2 million for the ninesix months ended SeptemberJune 30, 20182019 compared to $3.3$1.0 million for the same period in 2017. During the nine months ended September 30, 2018, interest and other income consisted2018. The increase was primarily ofattributable to increased investment interest income related toon our sales under hardware installment sale planshigher average balance of cash, cash equivalents and investment and interest income totaling $3.0 million which was partially offset by losses on foreign currency transaction adjustments of $0.7 million and other expense of $0.1 million. During the nine months ended September 30, 2017, interest and other income was primarily comprised of $2.3 million of foreign currency transaction gains and investment and interest income totaling $1.1 million which was partially offset by other expense of $0.1 million.investments.
Provision for Income Taxes
The provision for income taxes was a benefit of $2.0$1.6 million for the ninesix months ended SeptemberJune 30, 2018,2019, which was an effective tax rate of (8.1)(29.3)%. Our estimated full year effective income tax rate for 2018,2019, before discrete period adjustments, was 24.0%is 21.4%, which is moregreater than the federal statutory rate, primarily due to state taxes and non-deductible expenses for items such as meals and entertainment, executive compensation limitationlimited under IRC Section 162(m), lobbying fees, and an income inclusion from GILTI, offset by a reduction for FDII. This was partially offset byFDII and R&D tax credit deductions.credits. The effective tax rate was favorably impacted by an $8.1a $3.3 million discrete tax benefit primarily associated with windfalls related to stock-based compensation for RSUs that vested or stock options that were exercised during the ninesix months ended SeptemberJune 30, 2018. Of this amount, $3.42019. This was offset by an unfavorable discrete item of $0.6 million related to the write off of certain deferred tax assets related to future stock options exercisedcompensation vests for certain officers for whom deductibility of compensation is limited by our CEO in connection with our follow-on offering.IRC Section 162(m).
Net Income
Our net income increaseddecreased by $19.8$14.3 million to $27.1$7.2 million for the ninesix months ended SeptemberJune 30, 20182019 compared to $7.3$21.4 million for the same period in 2017.2018. Net income per basic and diluted share was $0.49 and $0.47$0.12 for the ninesix months ended SeptemberJune 30, 2018, respectively,2019 compared to $0.14$0.39 per basic share and $0.38 per diluted share for the same period in 2017.2018.

Non-GAAP Measures


To supplement our financial results presented in accordance with GAAP, we present the non-GAAP financial measures of EBITDA and Adjusted EBITDA (CEO Performance Award). Our management uses these non-GAAP financial measures in evaluating our performance in comparison to prior periods. We believe that both management and investors benefit from referring

to these non-GAAP financial measures in assessing our performance, and when planning and forecasting our future periods. A reconciliation of GAAP to the non-GAAP financial measures is presented below.


EBITDA (Most comparable GAAP Measure: Net income) - Earnings before interest expense, investment interest income, taxes, depreciation and amortization.
Adjusted EBITDA (CEO Performance Award) (Most comparable GAAP Measure: Net income) - Earnings before interest expense, investment interest income, taxes, depreciation, amortization and non-cash stock-based compensation expense.


Although these non-GAAP financial measures are not consistent with GAAP, management believes investors will benefit by referring to these non-GAAP financial measures when assessing our operating results, as well as when forecasting and analyzing future periods. However, management recognizes that:


these non-GAAP financial measures are limited in their usefulness and should be considered only as a supplement to our GAAP financial measures;
these non-GAAP financial measures should not be considered in isolation from, or as a substitute for, our GAAP financial measures;
these non-GAAP financial measures should not be considered to be superior to our GAAP financial measures; and
these non-GAAP financial measures were not prepared in accordance with GAAP and investors should not assume that the non-GAAP financial measures presented in this Quarterly Report on Form 10-Q were prepared under a comprehensive set of rules or principles.
    
EBITDA and Adjusted EBITDA (CEO Performance Award) reconcilereconciles to net income as follows (dollars in(in thousands):
Three Months Ended Nine Months EndedThree Months Ended Six Months Ended
September 30, 2018 
June 30,
2018
 September 30, 2017 September 30, 2018 September 30, 2017June 30, 2019 March 31, 2019 June 30, 2018 June 30, 2019 June 30, 2018
Net income$5,711
 $8,485
 $422
 $27,122
 $7,278
$738
 $6,419
 $8,485
 $7,157
 $21,411
Depreciation and amortization3,065
 2,750
 2,277
 8,226
 5,677
2,687
 2,800
 2,750
 5,487
 5,161
Interest expense16
 17
 49
 53
 132
17
 6
 17
 23
 37
Investment interest income(1,256) (595) (189) (1,926) (677)(1,630) (2,003) (595) (3,633) (670)
Provision for (benefit from) income taxes(471) (3,481) 209
 (2,032) 1,417
(188) (1,435) (3,481) (1,623) (1,561)
EBITDA$7,065
 $7,176
 $2,768
 $31,443
 $13,827
$1,624
 $5,787
 $7,176
 $7,411
 $24,378
                  
Adjustments:                  
Stock-based compensation expense6,255
 4,954
 4,000
 15,302
 11,423
8,627
 7,905
 4,954
 16,532
 9,047
Adjusted EBITDA (CEO Performance Award)$13,320
 $12,130
 $6,768
 $46,745
 $25,250
$10,251
 $13,692
 $12,130
 $23,943
 $33,425

Liquidity and Capital Resources
Summary
As of SeptemberJune 30, 2018,2019, we had $326.8$221.3 million of cash, cash equivalents and restricted cash, an increasea decrease of $248.4$129.7 million as compared to December 31, 2017.2018. The decrease in the balance of cash, cash equivalents and restricted cash was primarily attributable to the net purchase of investments of $116.7 million. As of SeptemberJune 30, 2018,2019, we had $324.4$219.7 million of cash and cash equivalents, of which $31.0$48.0 million was held in foreign locations. Our cash and cash equivalents balance as of September 30, 2018 reflects the $234.0 million of net proceeds related to the follow-on offering we completed in May 2018. Our ongoing sources of cash are predominatelyinclude cash on hand, investments, and cash flows from our sales of products and services to our customers.operations. In addition, our $10.0$50.0 million revolving credit facility is available for additional working capital needs or investment opportunities. Under the terms of the line of credit, available borrowings are reduced by outstanding letters of credit. TheAdvances under the line is secured by substantially all of our assets, and bearscredit bear interest at varying rates, currently LIBOR plus 1.25% or Prime less 0.50%. 1.0 to 1.5% per year determined in accordance with a pricing grid based on our funded debt to earnings before interest, taxes, depreciation and amortization ("EBITDA") ratio.  
As of SeptemberJune 30, 2018,2019, we had letters of credit outstanding of $3.1$4.4 million, leaving the net amount available for borrowing of $6.9$45.6 million. The facility matures on December 31, 2018.2021, and has an accordion feature which allows for an increase in the total line of credit up to $100.0 million, subject to certain conditions, including the availability of additional bank commitments. There can be no assurance that we will continue to generate cash flows at or above current levels or that we will be able to maintain our ability to borrow under our revolving credit facility. At SeptemberJune 30, 20182019 and December 31, 2017,2018, there were no borrowings under the line other than the outstanding letters of credit.
Our agreement with the bank requires us to comply with a maximum funded debt to EBITDA ratio, as defined, of no greater than 2.002.50 to 1.00 based upon a trailing twelve-monthfour fiscal quarter period. At SeptemberJune 30, 2018,2019, our funded debt to EBITDA ratio was 0.001 to 1.00.

TASER 60 installment purchase arrangements typically involve amounts invoiced in five equal installments at the beginning of each year of the five-year term. This is in contrast to a traditional CEW sale in which the entire amount being charged for the hardware is invoiced upon shipment. This impacts liquidity in a commensurate fashion, with the cash for the TASER 60 arrangementsarrangement received in five annual installments rather than up front. It is our strategic intent to shift an increasing amount of our business to a subscription model, to better match the municipal budgeting process of our customers as well as to allow for multiple product offerings to be bundled into existing subscriptions. We carefully considered the cash flow impacts of this strategic shift and regularly revisit our cash flow forecast with the goal of maintaining a comfortable level of liquidity as we introduce new commercial offerings in which we incur upfront cash costs to produce and fulfill hardware sales ahead of the cash inflows from our customers. We anticipate, and have prepared for, the majority of our arrangements in both reportable segments to be offered in similar subscription-type offerings over the coming years. With the launch of the TASER 7, which is primarily being sold in subscription offerings, we expect this strategic shift to accelerate.
We
Based on our strong balance sheet and the fact that we do not have long-term debt at June 30, 2019, we believe financing will be available, both through our existing credit line and possible additional financing. However, there is no assurance that such funding will be available on terms acceptable to us, or at all. We believe that our sources of funding will be sufficient to satisfy our currently anticipated cash requirements including capital expenditures, working capital requirements, potential acquisitions and other liquidity requirements through at least the next 12 months. We and our Board of Directors may consider repurchases of our common stock from time to time. Further repurchases of our common stock would take place on the open market, would be financed with available cash and are subject to market and business conditions.
Cash Flows
The following table summarizes our cash flows from operating, investing and financing activities (in thousands):
Nine Months Ended September 30,Six Months Ended June 30,
2018 20172019 2018
Net cash provided by (used in) operating activities$32,636
 $(5,851)$(2,576) $16,106
Net cash provided by (used in) investing activities(6,003) 9,551
Net cash used in investing activities(124,878) (7,226)
Net cash provided by (used in) financing activities222,158
 (1,575)(2,028) 223,197
Effect of exchange rate changes on cash, cash equivalents and restricted cash(381) 703
(252) (538)
Net increase in cash, cash equivalents and restricted cash$248,410
 $2,828
Net increase (decrease) in cash, cash equivalents and restricted cash$(129,734) $231,539

Operating activities
Net cash provided byused in operating activities in the first ninesix months of 20182019 of $32.6$2.6 million reflects $27.1$7.2 million in net income, impacted by the net increase of non-cash income statement items totaling $23.7$24.7 million, and a negative impact on cash outflows of $18.2$34.5 million for the net change in operating assets and liabilities. Included in the non-cash items were $8.2$5.5 million in depreciation and amortization expense and $15.3$16.5 million in stock-based compensation expense. Cash used in operations was impacted by increased accounts and notes receivable and contract assets of $11.0 million, decreased accounts payable, accrued liabilities and other liabilities of $16.8 million, increased inventory of $7.5 million, and increased prepaid expenses and other assets of $5.8 million. The increase in accounts and notes receivable and contract assets was attributable to increased sales over the last several quarters, primarily sales made under subscription plans. The decrease in accounts payable, accrued liabilities and other liabilities was primarily attributable to the timing of payments for our annual bonus plan. Cash used in operations was positively impacted by various other operating items, including increased deferred revenue of $6.6 million.

Net cash provided by operating activities in the first six months of 2018 of $16.1 million reflects $21.4 million in net income impacted by the net increase of non-cash income statement items totaling $14.6 million and decrease of $19.9 million for the net change in operating assets and liabilities. Included in the non-cash items were $5.2 million in depreciation and amortization expense and $9.0 million in stock-based compensation expense. Increases to operating cash flows consisted primarily of increased deferred revenue of $31.7$10.5 million and decreased inventory of $9.0$4.5 million. The increase in deferred revenue was

primarily driven by increased Software and Sensors services invoiced in advance. Cash used in operations was also impacted by various other operating items, with the most significant component related to increased accounts and notes receivable and contract assets of $51.2$24.8 million primarily related to increased customer balances under ourthe Company's Officer Safety Plan and TASER 60 purchase programs, including adjustments to our opening balance sheet related to our adoption of ASC 606. Cash provided by operations was also impacted by increased accounts payable and accrued liabilities of $4.3 million and decreased inventory of $9.0 million.

Net cash used in operating activities in the first nine months of 2017 of $5.9 million reflects $7.3 million in net income impacted by the net increase of non-cash income statement items totaling $13.4 million and decrease of $26.5 million for the net change in operating assets and liabilities. Included in the non-cash items were $5.7 million in depreciation and amortization expense, $11.4 million in stock-based compensation expense and $0.6 million of bond premium amortization. These non-cash increases were partially offset by deferred income tax expense of $4.2 million. Increases to operating cash flows consisted of increased accounts payable, accrued and other liabilities of $3.4 million, which reduced the amount of cash used during the period, along with increased deferred revenue of $26.5 million. The increase in deferred revenue was primarily driven by continued sales growth of products and services that are typically invoiced in advance, on a subscription basis, and recognized over the duration of the contract period as products and services are delivered. Of the increase in deferred revenue, $13.5 million resulted from increased hardware deferred revenue along with increased deferred warranty revenue of $5.0 million, and increased services, including Axon Evidence subscriptions, of $8.3 million.programs. Cash used in operations was also impacted by various other operating items, with the most significant component related to increaseddecreased accounts payable and notes receivableaccrued liabilities of $26.0$2.7 million of which $20.4 million related to increased customer balances under our Officer Safety Plan and TASER 60 purchase program while the remaining increase was attributable to increased trade receivable balances resulting from higher net sales. Cash used in operations was also impacted by increased inventory of $19.1 million in anticipation of our National Field Trial Offer for body cameras as well as anticipated higher sales throughout the remainder of 2017. Additionally, we had increased prepaid expenses and other assets of $11.3$7.4 million which wasdriven primarily related to a $3.7 million increase in customer receivables related to value added taxes passed on to customers which were due toby increased deferred commissions and higher TASER weaponsprepaid software licenses, partially offset by decreased deferred cost of product sales in the U.K.; a $1.6 million increase in prepaid commissions, which are paid for when a contract is booked, and subsequently amortized over the contractual period; and $0.9 million of increased employee bonuses that were paid in advance and will be recognized over the employees' explicit required service period.higher income tax receivables.


Investing activities
We used $6.0$124.9 million in investing activities during the first ninesix months of 2019, which was comprised of $116.7 million for the purchase of investments, net of proceeds, and $8.2 million for the purchase of property and equipment and intangible assets.

We used $7.2 million in investing activities during the first six months of 2018. Maturities and calls of investments, net of purchases, were $6.3$2.7 million. We invested $7.3$4.9 million in the purchase of property and equipment and intangible assets in addition to our $5.0 million investment related to the acquisition of VIEVU, LLC (Refer to Note 15 of the notes to our condensed consolidated financial statements within this Report on Form 10-Q). For the year ending December 31, 2018, we anticipate investingLLC.

Financing activities
Net cash used in capital expenditures in the range of $10financing activities was $2.0 million to $12 million.

We generated $9.6 million from investing activities during the first ninesix months of 2017. Maturities2019. During the first six months of 2019, we paid income and callspayroll taxes of investments, net$2.1 million on behalf of purchases, were $29.7 million,employees who net-settled stock awards during the period, which was partially offset by our investmentproceeds from options exercised of $9.5 million for the purchase of property and equipment and intangible assets and $10.6 million used for the acquisitions of Dextro, Inc. and our distributor in Australia, Breon Enterprises, Pty Ltd. and Breon Defence Systems.$0.1 million.

Financing activities
Net cash generated by financing activities was $222.2$223.2 million during the first ninesix months of 2018. In May 2018, we completed a public follow-on equity offering that generated net proceeds of $234.0 million which was partially offset by income and payroll taxes of $12.0$10.8 million paid by usthe Company on behalf of employees who net-settled stock awards during the period.

Net cash used in financing activities was $1.6 million during the first nine months of 2017. During the first nine months of 2017, we paid payroll taxes of $2.8 million on behalf of employees who net-settled stock awards during the period which was partially offset by proceeds from options exercised of $1.3 million.
Off-Balance Sheet Arrangements
The discussion of off-balance sheet arrangements in Note 1112 of the notes to our condensed consolidated financial statements within this Report on Form 10-Q is incorporated by reference herein. 

Critical Accounting Estimates
We have identified the following accounting estimates as critical to our business operations and the understanding of our results of operations. The preparation of financial statements requires us to make estimates and assumptions that affect the reported amount of assets and liabilities, the disclosure of contingent assets and liabilities at the date of our unaudited condensed consolidated financial statements, and the reported amounts of revenue and expenses during the reporting period. While we do not believe that a change in these estimates is reasonably likely, there can be no assurance that our actual results will not differ from these estimates. The effect of these estimates on our financial condition and results of operations are discussed below.
Product Warranties
We warranty our CEWs, Axon cameras and certain related accessories from manufacturing defects on a limited basis for a period of one year after purchase and, thereafter, will replace any defective unit for a fee. Estimated costs for the standard warranty are charged to cost of products sold when revenue is recorded for the related product. Future warranty costs are estimated based on historical data related to warranty claims on a quarterly basis and this rate is applied to current product sales. Historically, reserve amounts have been increased if management becomes aware of a component failure or other issue that could result in larger than anticipated warranty claims from customers. The warranty reserve is reviewed quarterly to verify that it sufficiently reflects the remaining warranty obligations based on the anticipated expenditures over the balance of the warranty obligation period, and adjustments are made when actual warranty claim experience differs from estimates. As of September 30, 2018 and December 31, 2017, our reserve for product warranty liabilities was $1.0 million and $0.6 million, respectively. As of September 30, 2018, our reserve also included initial reserves related to Signal Sidearm and Axon Fleet 2. Warranty expense for the nine months ended September 30, 2018 and 2017 was $0.7 million and $0.1 million, respectively. During the nine months ended September 30, 2018, we increased the warranty reserve related to the Axon Flex 2 on-officer body camera to better reflect actual warranty claims. During the nine months ended September 30, 2017, we decreased the warranty reserve related to the Axon Body 2 on-officer body camera to better reflect actual warranty claims.
Revenue related to separately-priced extended warranties is initially recorded as deferred revenue at its contractual amount and subsequently recognized as net sales ratably over the warranty service period. Costs related to extended warranties are charged to cost of product and service sales when incurred.
Inventory
Inventories are stated at the lower of cost and net realizable value. Cost is determined using the weighted average cost of raw materials, which approximates the first-in, first-out (“FIFO”) method and includes allocations of manufacturing labor and overhead. Provisions are made to reduce potentially excess, obsolete or slow-moving inventories, as well as trial and evaluation inventories to their net realizable value. These provisions are based on management’s best estimate after considering historical demand, projected future demand, inventory purchase commitments, industry and market trends and conditions among other factors. Management evaluates inventory costs for abnormal costs due to excess production capacity and treats such costs as period costs.
During the nine months ended September 30, 2018 and 2017, we recorded provisions for excess and obsolete inventory of $2.8 million and $1.5 million, respectively. During the nine months ended September 30, 2018, we continued phasing out previous generations of our body-worn and in-car cameras, which made up a portion of the amounts recorded as provisions to excess and obsolete inventory. Included within the $2.8 million expense, we recorded $0.5 million related to purchase commitments assumed in the VIEVU business combination that exceeded estimated future demand. The remaining change for the nine months ended September 30, 2018 was driven by analyses looking at projected sales data for existing products and making corresponding adjustments to state inventories at their lower of cost and net realizable value. Refer to Note 4 of the notes to our condensed consolidated financial statements within this Report on Form 10-Q.
Revenue Recognition, Contract Assets and Liabilities and Accounts and Notes Receivable
We derive revenue from two primary sources: (1) the sale of physical products, including CEWs, cameras, Axon Signal enabled devices, corresponding hardware extended warranties, and related accessories such as Axon docks, cartridges and batteries, among others, and (2) subscription to our Axon Evidence digital evidence management software as a service ("SaaS") (including secure cloud-based storage fees and other ancillary services), which includes varying levels of support. To a lesser extent, we also recognize revenue from training and professional services and revenue related to other software and SaaS services. Refer to Note 2 of the notes to our condensed consolidated financial statements within this Report on Form 10-Q.

Many of our products and services are sold on a standalone basis.We also bundle our hardware products and services together and sell them to our customers in single transactions, where the customer can make payments over a multi-year period. For the three and nine months ended September 30, 2018 and 2017, the composition of revenue recognized from contracts containing multiple performance obligations and those not containing multiple performance obligations was as follows (dollars in thousands):
 Three Months Ended September 30, 2018 
Three Months Ended September 30, 2017 (1)
 TASER Weapons Software and Sensors Total TASER Weapons Software and Sensors Total
Contracts with Multiple Performance Obligations$16,301
 25.6% $39,600
 96.2% $55,901
 53.3% $11,253
 19.0% $29,225
 95.0% $40,478
 45.0%
Contracts without Multiple Performance Obligations47,365
 74.4
 1,570
 3.8
 48,935
 46.7
 48,050
 81.0
 1,523
 5.0
 49,573
 55.0
Total$63,666
 100.0% $41,170
 100.0% $104,836
 100.0% $59,303
 100.0% $30,748
 100.0% $90,051
 100.0%
 Nine Months Ended September 30, 2018 
Nine Months Ended September 30, 2017 (1)
 TASER Weapons Software and Sensors Total TASER Weapons Software and Sensors Total
Contracts with Multiple Performance Obligations$51,289
 27.3% $113,188
 96.4% $164,477
 53.9% $34,976
 20.6% $73,802
 93.5% $108,778
 43.7%
Contracts without Multiple Performance Obligations136,525
 72.7
 4,275
 3.6
 140,800
 46.1
 135,014
 79.4
 5,144
 6.5
 140,158
 56.3
Total$187,814
 100.0% $117,463
 100.0% $305,277
 100.0% $169,990
 100.0% $78,946
 100.0% $248,936
 100.0%
(1) Amounts for the three and nine months ended September 30, 2017 have not been adjusted under the modified retrospective method of adoption of Topic 606, and are presented consistent with the prior period amounts reported under ASC 605.
Valuation of Goodwill, Intangibles and Long-lived Assets
We do not amortize goodwill and intangible assets with indefinite useful lives. Such assets are required to be tested for impairment at least annually, or whenever events or changes in circumstances indicate that the assets may be impaired. We perform our annual impairment assessment in the fourth quarter of each year. Finite-lived intangible assets and other long-lived assets are amortized over their estimated useful lives. Management evaluates whether events and circumstances have occurred that indicate the remaining estimated useful life of long-lived assets and intangible assets may warrant revision or that the remaining balance of these assets, including intangible assets with indefinite lives, may not be recoverable.
Circumstances that might indicate long-lived assets might not be recoverable could include, but are not limited to, a change in the product mix, a change in the way products are created, produced or delivered, or a significant change in the way our products are branded and marketed. When performing a review for recoverability, management estimates the future undiscounted cash flows expected to result from the use of the assets and their eventual disposition. The amount of the impairment loss, if impairment exists, is calculated based on the excess of the carrying amounts of the assets over their estimated fair value computed using discounted cash flows. During the three months ended September 30, 2018, we abandoned certain developed technology acquired in a business combination resulting in an impairment charge of $2.0 million.
Income Taxes
We recognize federal, state and foreign current tax liabilities or assets based on our estimate of taxes payable or refundable in the current fiscal year by tax jurisdiction. We also recognize federal, state and foreign deferred tax assets or liabilities, as appropriate, for our estimate of future tax effects attributable to temporary differences and carry forwards.
We recognize the tax benefit from an uncertain tax position only if it is more likely than not that the tax position will be sustained based on the technical merits of the position. The tax benefits recognized in the condensed consolidated financial statements from such positions are measured based on the largest benefit that has a greater than fifty percent likelihood of being realized upon ultimate resolution. Management must also assess whether uncertain tax positions as filed could result in the recognition of a liability for possible interest and penalties if any. We have claimed R&D tax credits of approximately $17.0 million for federal, Arizona and California income tax purposes related to tax years 2003 to 2018. Management determined that it was more likely than not that the full benefit of the R&D tax credit would not be sustained on examination and, accordingly, has established a liability for unrecognized tax benefits relating to the R&D tax credits of $3.6 million as of September 30, 2018. In

addition, we established a $0.2 million liability related to uncertain tax positions for certain federal and state income tax liabilities, for a total unrecognized tax benefit at September 30, 2018 of $3.8 million. Approximately $2.2 million of the unrecognized tax benefit associated with R&D credits has been netted against the R&D credit deferred tax asset. Our estimates are based on the information available to us at the time we prepare the income tax provision. Our tax filings remain subject to examination by applicable tax authorities for a certain length of time, generally three to four years, following the tax year to which these filings relate. These returns could be subject to material adjustments or differing interpretations of the tax laws. Our U.S. federal income tax return for fiscal year 2016 is currently under audit by the Internal Revenue Service.
Our calculation of current and deferred tax assets and liabilities is based on certain estimates and judgments and involves dealing with uncertainties in the application of complex tax laws. Our estimates of current and deferred tax assets and liabilities may change based, in part, on added certainty or finality to an anticipated outcome, changes in accounting or tax laws in the U.S. and overseas, or changes in other facts or circumstances. In addition, we recognize liabilities for potential U.S. tax contingencies based on our estimate of whether, and the extent to which, additional taxes may be due. If we determine that payment of these amounts is unnecessary, or if the recorded tax liability is less than our current assessment, we may be required to recognize an income tax benefit, or additional income tax expense, respectively, in our condensed consolidated financial statements.
In preparing our condensed consolidated financial statements, management assesses the likelihood that our deferred tax assets will be realized from future taxable income. In evaluating our ability to recover our deferred income tax assets, management considers all available positive and negative evidence, including operating results, ongoing tax planning and forecasts of future taxable income on a jurisdiction by jurisdiction basis. A valuation allowance is established if we determine that it is more likely than not that some portion or all of the net deferred tax assets will not be realized.
Although management believes that its tax estimates are reasonable, the ultimate tax determination involves significant judgments that could become subject to audit by tax authorities in the ordinary course of business. As of September 30, 2018, we would need to generate approximately $55.4 million of pre-tax book income in the U.S. in order to realize the net deferred tax assets for which a benefit has been recorded. This estimate considers the reversal of $15.8 million of taxable temporary differences, which produce $3.6 million of deferred tax liabilities. We have $4.5 million of state net operating losses (“NOLs”) which expire at various dates between 2030 and 2036. We also have federal NOLs of $1.5 million which expire in 2035 through 2036, and are subject to limitation under IRC Section 382. We have $7.5 million of Arizona R&D credits carrying forward, which expire at various dates between 2018 and 2032, and $0.1 million of federal R&D credits carrying forward which expire in 2034 through 2037. In Australia, the U.K., Canada, and Germany, we have $1.1 million, $7.6 million, $1.7 million, and $0.4 million of NOLs, respectively, which expire at various dates or may be carried forward indefinitely.
We anticipate our future income to continue to trend upward from our 2017 results, with sufficient pre-tax book income to realize a large portion of our deferred tax assets. As such, we have not recorded a valuation allowance on our U.S. deferred tax assets as of September 30, 2018, with the exception of a reserve of $2.5 million that has been recorded due to specific income projections in years in which certain tax assets are set to expire. As of September 30, 2018, we have cumulative losses in Australia, the U.K. and Canada, and a history of losses in Germany, which limits the ability to consider other subjective evidence, such as projections for future growth. On the basis of this evaluation, a full valuation allowance has been recorded for these jurisdictions. The amount of the deferred tax asset considered realizable, however, could be adjusted if objective negative evidence in the form of cumulative losses is no longer present and additional weight is given to subjective evidence such as projections for growth.
We consider the earnings of certain non-U.S. subsidiaries to be indefinitely reinvested outside of the United States on the basis of estimates that future domestic cash generation will be sufficient to meet future domestic cash needs and our specific plans for reinvestment of those subsidiary earnings. The determination of the unrecognized deferred tax liability on those undistributed foreign earnings is not practicable due to our legal entity structure and the complexity of U.S. and local country tax laws. If we decide to repatriate the undistributed foreign earnings, we will need to recognize the income tax effects in the period we change our assertion on indefinite reinvestment. Refer to Note 8 of the notes to our condensed consolidated financial statements within this Report on Form 10-Q.
Stock-Based Compensation

We have historically granted stock-based compensation to key employees and non-employee directors as a means of attracting and retaining highly qualified personnel. Stock-based compensation awards primarily consist of service-based RSUs.RSUs, performance-based RSUs, and performance-based options. RSUs are classified as equity and measured at the fair market value of the underlying stock at the grant date. We recognize RSU expense using the straight-line attribution method over the requisite service period. We also issue performance-based RSUs, the vesting of which is contingent upon the achievement of certain performance criteria related to our operating performance, as well as successful and timely development and market acceptance of future product introductions. For performance-based RSUs containing only performance conditions, compensation cost is recognized using the acceleratedgraded attribution model over the explicit or implicit service period. For awards containing multiple service, performance or market conditions, and all conditions must be satisfied prior to vesting, compensation expense is recognized over the requisite service period, which is defined as the longest explicit, implicit or derived service period, based on management’s estimate of the probability of

the performance criteria being satisfied, adjusted at each balance sheet date. For both service-based and performance-based RSUs,we account for forfeitures as they occur as a reduction to stock-based compensation expense and additional paid-in-capital.

For performance-based options,awards, stock-based compensation expense is recognized over the expected performance achievement period of individual performance goals when the achievement of each individual performance goal becomes probable. For performance-based awards with a vesting schedule based entirely on the attainment of both performance and market conditions, stock-based compensation expense is recognized for each pair of performance and market conditions over the longer of the expected achievement period of the performance and market conditions, beginning at the point in time that the relevant performance condition is considered probable of achievement. The fair value of such awards is estimated on the grant date using Monte Carlo simulations. Refer to Note 9 of the notes to our condensed consolidated financial statements within this Report on Form 10-Q.
We have granted a total of 8.512.9 million performance-based awards (options and restricted stock units) of which 6.812.0 million are outstanding as of SeptemberJune 30, 2018.2019, the vesting of which is contingent upon the achievement of certain performance criteria
Contingencies
including the successful development and Accrued Litigation Expensemarket acceptance of future product introductions, our future sales targets, operating performance, and market capitalization. These awards will vest and compensation expense will be recognized based on management’s best estimate of the probability of the performance criteria being satisfied using the most currently available projections of future product adoption and operating performance, adjusted at each balance sheet date. Changes in the subjective and probability-based assumptions can materially affect the estimate of the fair value of stock-based compensation and consequently, the related amount recognized in our condensed consolidated statements of operations and comprehensive income.
Leases

We are subject to the possibilityadopted Topic 842 as of various loss contingencies arising in the ordinary course of business, including product-related litigation. We consider the likelihood of loss or impairment of an asset or the incurrence of a liability, as well as our ability to reasonably estimate the amount of loss in determining loss contingencies. An estimated loss contingency is accrued when it is probable that an asset has been impaired or a liability has been incurred and the amount of loss can be reasonably estimated. We regularly evaluate current information available to us to determine whether such accruals should be adjusted and whether new accruals are required.January 1, 2019. Refer to Note 111 of the notes to our condensed consolidated financial statements within this Report on Form 10-Q for further discussion.discussion about the new standard and its impact on our condensed consolidated balance sheet.
Except as noted below, as of September 30, 2018, there were no material changes outside of the ordinary course of business
ROU assets represent our right to the contractual obligations table, including the notes thereto, contained in our Report on Form 10-Kuse an underlying asset for the fiscal year ended December 31, 2017.
In connection withlease term and lease liabilities represent our acquisition of VIEVU, we entered into a long-term Product Developmentobligation to make lease payments arising from the lease. ROU assets and Supplier Agreement (the “Supply Agreement”) with Safariland, pursuant to which Safariland will be our preferred provider of holsters for its CEW products. The Supply Agreement provides for a minimum number of units to be purchased by usliabilities are recognized at pre-determined prices over a ten-year period. The total undiscountedthe lease commencement date based on the estimated present value of minimum purchases underlease payments over the Supply Agreementlease term. We use our estimated incremental borrowing rate, which is approximately $22.0 million.derived from information available at the lease commencement date, in determining the present value of lease payments. We give consideration to our line of credit as well as publicly available data for instruments with similar characteristics when calculating our incremental borrowing rates.

Our lease term includes options to extend the lease when it is reasonably certain that we will exercise that option. Leases with a term of 12 months or less are not recorded on the balance sheet. Our lease agreements do not contain any residual value guarantees.
Item 3. Quantitative and Qualitative Disclosures About Market Risk
Interest Rate Risk
We typically invest in a limited number of financial instruments, consisting principally of investments in money market accounts, certificates of deposit, and corporate and municipal bonds with a typical long-term debt rating of “A” or better by any nationally recognized statistical rating organization, denominated in U.S. dollars. All of our cash equivalents and investments are treated as “held-to-maturity.” Investments in fixed-rate interest-earning instruments carry a degree of interest rate risk as their market value may be adversely impacted due to a rise in interest rates. As a result, we may suffer losses in principal if we sell securities that have declined in market value due to changes in interest rates. However, because we classify our debt securities as “held-to-maturity” based on our intent and ability to hold these instruments to maturity, no gains or losses are recognized due to changes in interest rates. These securities are reported at amortized cost. Based on investment positions as of SeptemberJune 30, 2018,2019, a hypothetical 100 basis point increase in interest rates across all maturities would result in an insignificant incrementala $0.3 million decline in the fair market value of the portfolio. Such losses would only be realized if we sold the investments prior to maturity.
Additionally, we have access to a $10.0$50.0 million line of credit borrowing facility which bears interest at varying rates, currently at LIBOR plus 1.25% or Prime less 0.50%.1.0 to 1.5% per year determined in accordance with a pricing grid based on our funded debt to EBITDA ratio. Under the terms of the line of credit, available borrowings are reduced by outstanding letters of credit, which totaled $3.1$4.4 million at SeptemberJune 30, 2018.2019. At SeptemberJune 30, 2018,2019, there was no amount outstanding under the line of credit and the available borrowing under the line of credit was $6.9$45.6 million. We have not borrowed any funds under the line of credit since its inception; however; should we need to do so in the future, such borrowings could be subject to adverse or favorable changes in the underlying interest rate.

Exchange Rate Risk
Our results of operations and cash flows are subject to fluctuations due to changes in foreign currency exchange rates, in each case compared to the U.S. Dollar,dollar, related to transactions by our foreign subsidiaries. The majority of our sales to international customers are transacted in U.S. dollars and therefore, are not subject to exchange rate fluctuations.fluctuations on these transactions. However, the cost of our products to our customers increases when the U.S. dollar strengthens against their local currency, and we may have more sales and expenses denominated in foreign currencies in future years which could increase our foreign exchange rate risk. Additionally, intercompany sales to our non-U.S. dollar functional currency international subsidiaries are transacted in U.S. dollars which could increase our foreign exchange rate risk caused by foreign currency transaction gains and losses.
To date, we have not engaged in any currency hedging activities. However, we may enter into foreign currency forward and option contracts with financial institutions to protect against foreign exchange risks associated with certain existing or future assets and liabilities, certain firmly committed transactions, forecasted future cash flows and net investments in foreign subsidiaries. WeHowever, we may choose not to hedge certain foreign exchange exposures for a variety of reasons, including but not limited to the prohibitive

economic cost of hedging particular exposures. As such, fluctuations in currency exchange rates could harm our business in the future.
Item 4. Controls and Procedures
Evaluation of Disclosure Controls and Procedures
Our Chief Executive Officer and Chief Financial Officer are responsible for the evaluation of the effectiveness of our disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Exchange Act) as of the end of the period covered by this Quarterly Report on Form 10-Q. Our disclosure controls and procedures are designed to ensure that information we are required to disclose in reports that we file or submit under the Exchange Act is (i) recorded, processed, summarized and reported within the time periods specified in the SEC’s rules and forms and (ii) accumulated and communicated to our management, including our Chief Executive Officer and Chief Financial Officer, as appropriate to allow timely decisions regarding required disclosure. Based on that evaluation, our Chief Executive Officer and Chief Financial Officer have concluded that our disclosure controls and procedures were not effective as of SeptemberJune 30, 2018 at a level that provides reasonable assurance as of the last day of the period covered by this report for the following reasons:
as disclosed in Part II, Item 5 within this Report on Form 10-Q, we have identified a number of Forms 4 that were not filed timely and were not disclosed in our Report on Form 10-K as required; and
a material weakness exists in our internal control over financial reporting, as further described below.
During the fourth quarter of 2017, we identified a material weakness related to account reconciliations and monitoring over our U.K. subsidiary, Axon Public Safety U.K. Ltd. ("APS U.K."), which resulted from a breakdown in the operation of identified preventative and detective controls which led to us not initially recording some transactions correctly during 2016 and the interim periods in 2017.
To remediate the material weakness described above and related to APS U.K., we designed and have implemented a specific plan to design new controls, and enhanced the design of existing controls and procedures. Specifically:

for the 2017 year-end close and first quarter 2018 close, our corporate accounting team performed additional review and monitoring procedures; and during the second and third quarters of 2018, transitioned a majority of accounting procedures to our headquarters in Arizona;
we plan for our corporate accounting team to continue performing these additional procedures on an ongoing basis;
we added internal reporting procedures, including those designed to add depth to our detailed review processes of inventory, sales transactions and related accounting for deferred revenue and cost of goods sold and services delivered for APS U.K.; and
on June 1, 2018, we completed the migration of APS U.K. onto the same standard systems, processes and controls as our other locations, which subjects APS U.K. activity to those procedures by the same personnel that perform the accounting activities for our other locations.

The material weakness will not be considered remediated until the applicable remedial controls operate for a sufficient period of time and management has concluded, through testing, that these controls are operating effectively. As remediation testing has not yet been completed, our Chief Executive Officer and Chief Financial Officer have concluded that our disclosure controls and procedures were not effective as of September 30, 2018 at a level that provides reasonable assurance as of the last day of the period covered by this report.

2019.
Change in Internal Control over Financial Reporting
Except as noted above, thereThere were no other changes in our internal control over financial reporting during the fiscal quarter ended SeptemberJune 30, 2018,2019 that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

PART II - OTHER INFORMATION
 
Item 1. Legal Proceedings
The discussion of legal proceedingsunder the headings Product Litigation, Other Litigation, and U.S. Federal Trade Commission Investigation in Note 1112 of the notes to our condensed consolidated financial statements included in PART I, ITEM 1 of this Report on Form 10-Q is incorporated by reference herein.
Item 1A. Risk Factors
Our operations and financial results
There are subject to various risks and uncertainties, including those describedno other material changes from the risk factors previously disclosed in Part I, Item 1A, "Risk Factors" in our Annual Report on Form 10-K for the year ended December 31, 2017,2018, which could adversely affect our business, financial condition, results of operations, cash flows, and the trading price of our common stock. There have been no material changesstock, except as noted below.

Higher costs or unavailability of materials could adversely affect our financial results.

We depend on certain domestic and international suppliers for the delivery of components used in the assembly of our products. Our reliance on third-party suppliers creates risks related to our riskpotential inability to obtain an adequate supply of components or sub-assemblies and reduced control over pricing and timing of delivery of components and sub-assemblies. Specifically, we depend on suppliers of sub-assemblies, machined parts, injection molded plastic parts, printed circuit boards, custom wire fabrications and other miscellaneous customer parts for our products. We do not have long-term agreements with any of our suppliers and there is no guarantee that supply will not be interrupted.

Single or sole-source components used in the manufacture of our products may become unavailable or discontinued. Delays caused by industry allocations or obsolescence may take weeks or months to resolve. In some cases, parts obsolescence may require a product re-design to ensure quality replacement components. These delays could cause significant delays in manufacturing and loss of sales, leading to adverse effects significantly impacting our financial condition or results of operations and could injure our reputation.

A significant number of our raw materials or components are comprised of petroleum-based products or incur some form of landed cost associated with transporting the raw materials or components to our facility. Our freight and import costs and the timely delivery of our products could be adversely impacted by a number of factors sincewhich could reduce the profitability of our Annual Reportoperations, including: higher fuel costs; potential port closures; customs clearance issues; increased government regulation or changes for imports of foreign products into the U.S.; delays created by terrorist attacks or threats, public health issues, national disasters or work stoppages; and other matters. Any interruption of supply for any material components of our products could significantly delay the shipment of our products and have a material adverse effect on Form 10-K forour revenues, profitability and financial condition. International or domestic geopolitical or other events, including the year ended December 31, 2017.imposition of new or increased tariffs and/or quotas by the U.S. government on any of these raw materials or components, could adversely impact the supply and cost of these raw materials or components, and could adversely impact the profitability of our operations.
Item 2. Unregistered Sales of Equity Securities and Use of Proceeds
None.
Item 3. Defaults Upon Senior Securities
None.
Item 4. Mine Safety Disclosures
None.
Item 5. Other Information

None.

Item 1.02 Termination of a Material Definitive Agreement

On November 2, 2018, we terminated the Purchase and Sale Agreement previously disclosed on our Current Report on Form 8-K filed September 19, 2018, pursuant to which we purchased a leasehold interest to a parcel of land located in Maricopa County, Arizona, on which we intended to construct our new headquarters. We expect our escrow deposit of approximately $0.2 million will be returned, and no further amounts are owed under the agreement.

Item 8.01. Other Events

Part III, Item 10 of the Company’s Annual Report on Form 10-K for the year ended December 31, 2017 incorporated by reference from the Company’s definitive proxy statement for its 2018 Annual Meeting of Stockholders (filed with the SEC on April 13, 2018) (the “2018 Proxy”) the information required by Item 405 of Regulation S-K. The 2018 Proxy stated that the Company’s executive officers and directors had complied with such Section 16(a) filing requirements applicable to them in 2017 except for Julie Cullivan, a member of the Board of Directors, did not timely file one Form 3 and one Form 4 (reporting one transaction). The Company has determined that there were additional Forms 4 not timely filed in 2017. Following is updated disclosure about the Company’s Section 16(a) Beneficial Ownership Reporting Compliance for 2017.

Based solely on a review of the copies of Section 16(a) reports furnished to the Company and written representations from reporting persons that no other reports were required, to the Company’s knowledge, such persons complied with all of the Section 16(a) filing requirements applicable to them in 2017, except as follows: Jawad A. Ahsan, Julie Cullivan, Douglas E. Klint, Hadi Partovi, and Marcus Womack each filed one late Form 4 (each reporting one transaction); Michael Garnreiter, Joshua M. Isner, and Patrick W. Smith each filed two late Form 4s (each reporting one transaction); and Luke S. Larson filed three late Form 4s (each reporting one transaction).

The late filings resulted from administrative oversight and internal logistical issues from delays in reporting equity awards granted and automatic withholding of shares for tax purposes upon vesting of equity awards.  The Company has revised its internal processes in order to improve compliance with all Section 16(a) filing deadlines and the disclosures regarding such compliance.  None of the transactions reported late involved open market purchases or sales of the Company’s common stock, and all involved transactions exempt from the short-swing profit recovery rules of Section 16(b) of the Exchange Act.

Item 6. Exhibits
10.1 
10.2
10.3
31.1* 
31.2* 
32** 
101.INS*101.INS Inline XBRL Instance Document - the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document.
101.SCH*101.SCH Inline XBRL Taxonomy Extension Schema Document
101.CAL*101.CAL Inline XBRL Taxonomy Extension Calculation Linkbase Document
101.DEF*101.DEF Inline XBRL Taxonomy Extension Definition Linkbase Document
101.LAB*101.LAB Inline XBRL Taxonomy Extension Label Linkbase Document
101.PRE*101.PRE Inline XBRL Taxonomy Extension Presentation Linkbase Document
104The cover page from the Company's Quarterly Report for the quarter ended June 30, 2019, formatted in Inline XBRL


*    Filed herewith
**    Furnished herewith






 





SIGNATURES
Pursuant to the requirements 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.
 
     
AXON ENTERPRISE, INC.   
     
Date:November 7, 2018August 9, 2019   
  By: /s/ PATRICK W. SMITH
    Chief Executive Officer
    (Principal Executive Officer)
    
Date:November 7, 2018August 9, 2019By: /s/ JAWAD A. AHSAN
    Chief Financial Officer
    (Principal Financial and
    Accounting Officer)




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