UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
 
   
Form 10-Q
 
   
(Mark One) 
QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the quarterly period ended March 31,June 30, 2020
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: 001-35480
   
enpha12.jpg
Enphase Energy, Inc.
(Exact name of registrant as specified in its charter)
   
Delaware 20-4645388
(State or other jurisdiction of incorporation or organization) (I.R.S. Employer Identification No.)
47281 Bayside Parkway
Fremont, CA 94538
(Address of principal executive offices, including zip code)
(707) 774-7000
(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 class Trading Symbol(s) Name of each exchange on which registered
Common Stock, $0.00001 par value per share ENPH Nasdaq Global 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.    Yes   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).    Yes   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

 Accelerated filer

Non-accelerated filer

 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  
As of AprilJuly 28, 2020, there were 125,211,569126,007,389 shares of the registrant’s common stock outstanding, $0.00001 par value per share.
 



ENPHASE ENERGY, INC.
FORM 10-Q FOR THE QUARTERLY PERIOD ENDED MARCH 31,JUNE 30, 2020
TABLE OF CONTENTS
 
  Page
  
   
 
 
 
 
 
 
   
  
   
 




PART I. FINANCIAL INFORMATION
Item 1. Financial Statements (Unaudited)
ENPHASE ENERGY, INC.
CONDENSED CONSOLIDATED BALANCE SHEETS
(In thousands, except par value)
(Unaudited)
As ofAs of
March 31,
2020
 December 31,
2019
June 30,
2020
 December 31,
2019
ASSETS      
Current assets:      
Cash and cash equivalents$549,144
 $251,409
$607,254
 $251,409
Restricted cash44,700
 44,700

 44,700
Accounts receivable, net of allowances of $374 and $564 at March 31, 2020 and December 31, 2019, respectively95,484
 145,413
Accounts receivable, net of allowances of $296 and $564 at June 30, 2020 and December 31, 2019, respectively89,504
 145,413
Inventory34,617
 32,056
31,186
 32,056
Prepaid expenses and other assets27,752
 26,079
29,257
 26,079
Total current assets751,697
 499,657
757,201
 499,657
Property and equipment, net30,500
 28,936
32,972
 28,936
Operating lease, right of use asset11,986
 10,117
11,462
 10,117
Intangible assets, net29,332
 30,579
28,086
 30,579
Goodwill24,783
 24,783
24,783
 24,783
Other assets47,798
 44,620
49,551
 44,620
Deferred tax assets, net86,806
 74,531
93,872
 74,531
Convertible notes hedge47,885
 
Total assets$1,030,787
 $713,223
$997,927
 $713,223
LIABILITIES AND STOCKHOLDERS’ EQUITY      
Current liabilities:      
Accounts payable$34,538
 $57,474
$24,135
 $57,474
Accrued liabilities49,817
 47,092
46,691
 47,092
Deferred revenues, current39,022
 81,783
40,256
 81,783
Warranty obligations, current (includes $6,578 and $6,794 measured at fair value at March 31, 2020 and December 31, 2019, respectively)9,678
 10,078
Warranty obligations, current (includes $6,917 and $6,794 measured at fair value at June 30, 2020 and December 31, 2019, respectively)10,170
 10,078
Debt, current100,567
 2,884
102,271
 2,884
Total current liabilities233,622
 199,311
223,523
 199,311
Long-term liabilities:      
Deferred revenues, noncurrent106,205
 100,204
110,977
 100,204
Warranty obligations, noncurrent (includes $13,847 and $13,012 measured at fair value at March 31, 2020 and December 31, 2019, respectively)27,823
 27,020
Warranty obligations, noncurrent (includes $14,215 and $13,012 measured at fair value at June 30, 2020 and December 31, 2019, respectively)27,737
 27,020
Other liabilities13,077
 11,817
12,340
 11,817
Debt, noncurrent (1)
295,216
 102,659
Warrants liability38,637
 
Debt, noncurrent253,174
 102,659
Total liabilities714,580
 441,011
627,751
 441,011
Commitments and contingent liabilities (Note 9)


 


Commitments and contingencies (Note 9)


 


Stockholders’ equity:      
Common stock, $0.00001 par value, 150,000 shares and 150,000 shares authorized; and 125,072 shares and 123,109 shares issued and outstanding at March 31, 2020 and December 31, 2019, respectively1
 1
Common stock, $0.00001 par value, 200,000 shares and 150,000 shares authorized; and 125,979 shares and 123,109 shares issued and outstanding at June 30, 2020 and December 31, 2019, respectively1
 1
Additional paid-in capital433,542
 458,315
534,867
 458,315
Accumulated deficit(116,245) (185,181)(163,539) (185,181)
Accumulated other comprehensive loss(1,091) (923)(1,153) (923)
Total stockholders’ equity316,207
 272,212
370,176
 272,212
Total liabilities and stockholders’ equity$1,030,787
 $713,223
$997,927
 $713,223


(1)Debt, noncurrent balance as of March 31, 2020, includes Convertible Notes due 2025 embedded derivative balance of $45.1 million. See Note 8, “Debt,” of the notes to condensed consolidated financial statements included in Part I, Item 1 of this Form 10-Q for further details.
See Notes to Condensed Consolidated Financial Statements.

 
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ENPHASE ENERGY, INC.
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS
(In thousands, except per share data)
(Unaudited)
Three Months Ended
March 31,
Three Months Ended
June 30,
 Six Months Ended
June 30,
2020 20192020 2019 2020 2019
Net revenues$205,545
 $100,150
$125,538
 $134,094
 $331,083
 $234,244
Cost of revenues124,870
 66,811
77,151
 88,775
 202,021
 155,586
Gross profit80,675
 33,339
48,387
 45,319
 129,062
 78,658
Operating expenses:          
Research and development11,876
 8,524
13,192
 9,604
 25,068
 18,128
Sales and marketing11,772
 7,433
12,371
 9,054
 24,143
 16,487
General and administrative12,315
 9,880
11,970
 8,583
 24,285
 18,463
Restructuring charges
 368

 631
 
 999
Total operating expenses35,963
 26,205
37,533
 27,872
 73,496
 54,077
Income from operations44,712
 7,134
10,854
 17,447
 55,566
 24,581
Other income (expense), net   
Other expense, net       
Interest income1,091
 211
282
 593
 1,373
 804
Interest expense(3,155) (3,751)(5,952) (1,351) (9,107) (5,102)
Other expense, net(924) (481)
Other (expense) income, net653
 (5,480) (271) (5,961)
Change in fair value of derivatives15,344
 
(59,692) 
 (44,348) 
Total other income (expense), net12,356
 (4,021)
Income before income taxes57,068
 3,113
Total other expense, net(64,709) (6,238) (52,353) (10,259)
Income (loss) before income taxes(53,855) 11,209
 3,213
 14,322
Income tax benefit (provision)11,868
 (348)6,561
 (591) 18,429
 (939)
Net income$68,936
 $2,765
Net income per share:   
Net income (loss)$(47,294) $10,618
 $21,642
 $13,383
Net income (loss) per share:       
Basic$0.56
 $0.03
$(0.38) $0.09
 $0.17
 $0.12
Diluted$0.50
 $0.02
$(0.38) $0.08
 $0.16
 $0.11
Shares used in per share calculation:          
Basic123,531
 108,195
125,603
 113,677
 124,567
 110,951
Diluted138,104
 115,863
125,603
 130,737
 138,910
 129,400

See Notes to Condensed Consolidated Financial Statements.

 
Enphase Energy, Inc. | 2020 Form 10-Q | 2

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ENPHASE ENERGY, INC.
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)
(In thousands)
(Unaudited)
Three Months Ended
March 31,
Three Months Ended
June 30,
 Six Months Ended
June 30,
2020 20192020 2019 2020 2019
Net income$68,936
 $2,765
Net income (loss)$(47,294) $10,618
 $21,642
 $13,383
Other comprehensive loss:          
Foreign currency translation adjustments(168) (79)(62) (249) (230) (328)
Comprehensive income$68,768
 $2,686
Comprehensive income (loss)$(47,356) $10,369
 $21,412
 $13,055

See Notes to Condensed Consolidated Financial Statements.

 
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ENPHASE ENERGY, INC.
CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDER’S EQUITY
(In thousands)
(Unaudited)
Three Months Ended
March 31,
Three Months Ended
June 30,
 Six Months Ended
June 30,
2020 20192020 2019 2020 2019
Common stock and paid-in capital          
Balance, beginning of period$458,316
 $353,336
$433,543
 $357,024
 $458,316
 $353,336
Cumulative-effect adjustment to additional paid in capital(1)

 26

 1
 
 27
Issuance of common stock from exercise of equity awards1,979
 1,664
2,867
 958
 4,846
 2,622
Payment of withholding taxes related to net share settlement of equity awards(34,267) (1,355)(9,385) (735) (43,652) (2,090)
Conversion of convertible notes due 2023, net
 58,857
 
 58,857
Equity component of convertible notes116,300
 35,089
 116,300
 35,089
Cost of convertible notes hedge related to the convertible notes(117,108) (36,313) (117,108) (36,313)
Sale of warrants related to the convertible notes96,351
 29,818
 96,351
 29,818
Stock-based compensation expense and other7,515
 3,353
12,300
 5,104
 19,815
 8,457
Balance, end of period$433,543
 $357,024
$534,868
 $449,803
 $534,868
 $449,803
          
Accumulated deficit          
Balance, beginning of period$(185,181) $(346,302)$(116,245) $(343,563) $(185,181) $(346,302)
Cumulative-effect adjustment to accumulated deficit(1) and other

 (26)
 (1) 
 (27)
Net income68,936
 2,765
Net income (loss)(47,294) 10,618
 21,642
 13,383
Balance, end of period$(116,245) $(343,563)$(163,539) $(332,946) $(163,539) $(332,946)
          
Accumulated other comprehensive income (loss)          
Balance, beginning of period$(923) $742
$(1,091) $663
 $(923) $742
Foreign currency translation adjustments(168) (79)(62) (249) (230) (328)
Balance, end of period$(1,091) $663
$(1,153) $414
 $(1,153) $414
Total stockholders' equity, ending balance$316,207
 $14,124
$370,176
 $117,271
 $370,176
 $117,271
  
(1)Includes the adoption of Accounting Standards Update (“ASU”) 2018-07, “Compensation - Stock Compensation: Improvements to Non-employee Share-Based Payment Accounting” on January 1, 2019.

See Notes to Condensed Consolidated Financial Statements.

 
Enphase Energy, Inc. | 2020 Form 10-Q | 4

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ENPHASE ENERGY, INC.
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
(In thousands)
(Unaudited)
Three Months Ended
March 31,
Six Months Ended
June 30,
2020 20192020 2019
Cash flows from operating activities:      
Net income$68,936
 $2,765
$21,642
 $13,383
Adjustments to reconcile net income to net cash provided by operating activities:      
Depreciation and amortization3,844
 3,572
7,985
 7,694
Provision for doubtful accounts104
 
185
 207
Non-cash interest expense2,722
 1,490
8,094
 2,266
Financing fees on extinguishment of debt
 2,152

 2,152
Fees paid for repurchase and exchange of convertible notes due 2023
 6,000
Stock-based compensation7,515
 3,290
19,815
 8,224
Change in fair value of derivatives(15,344) 
44,348
 
Deferred income taxes(12,500) 
(19,567) 
Changes in operating assets and liabilities:      
Accounts receivable49,637
 (3,266)56,166
 (19,104)
Inventory(2,560) 3,296
870
 (3,827)
Prepaid expenses and other assets(5,009) (2,413)(9,534) (9,568)
Accounts payable, accrued and other liabilities(22,066) 4,851
(35,389) 16,805
Warranty obligations403
 (252)809
 1,699
Deferred revenues(36,460) 1,578
(30,771) 5,904
Net cash provided by operating activities39,222
 17,063
64,653
 31,835
Cash flows from investing activities:      
Purchases of property and equipment(3,353) (658)(7,804) (3,176)
Net cash used in investing activities(3,353) (658)(7,804) (3,176)
Cash flows from financing activities:      
Issuance of convertible notes, net of issuance costs313,011
 
312,420
 128,040
Purchase of convertible note hedges(89,056) 
(89,056) (36,313)
Sale of warrants71,552
 
71,552
 29,819
Fees paid for repurchase and exchange of convertible notes due 2023
 (6,000)
Principal payments and financing fees on debt(1,148) (44,731)(1,633) (45,122)
Proceeds from exercise of equity awards and employee stock purchase plan1,979
 1,664
4,846
 2,622
Payment of withholding taxes related to net share settlement of equity awards(34,267) (1,355)(43,652) (2,090)
Net cash provided by (used in) financing activities262,071
 (44,422)
Net cash provided by financing activities254,477
 70,956
Effect of exchange rate changes on cash and cash equivalents(205) (133)(181) 107
Net increase (decrease) in cash, cash equivalents, and restricted cash297,735
 (28,150)
Net increase in cash and cash equivalents311,145
 99,722
Cash, cash equivalents and restricted cash—Beginning of period296,109
 106,237
296,109
 106,237
Cash, cash equivalents and restricted cash—End of period$593,844
 $78,087
Reconciliation of cash, cash equivalents, and restricted cash to the condensed consolidated balance sheets   
Cash and cash equivalents549,144
 78,087
Restricted cash44,700
 
Total cash, cash equivalents, and restricted cash$593,844
 $78,087
Cash and cash equivalents—End of period$607,254
 $205,959
      
Supplemental disclosures of non-cash investing and financing activities:      
Purchases of fixed assets included in accounts payable$585
 $458
$1,636
 $1,194
Convertible senior note issuance costs included in accounts payable and accrued expense$591
 $
Accrued interest payable unpaid upon exchange of convertible notes due 2023$
 $833


See Notes to Condensed Consolidated Financial Statements.

 
Enphase Energy, Inc. | 2020 Form 10-Q | 5

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ENPHASE ENERGY, INC.
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
(Unaudited)
1.
DESCRIPTION OF BUSINESS AND BASIS OF PRESENTATION
Description of Business
Enphase Energy, Inc. (the “Company”) is a global energy technology company. The Company delivers smart, easy-to-use solutions that manage solar generation, storage and communication on one intelligent platform. The Company revolutionized the solar industry with its microinverter technology and produces a fully integrated solar-plus-storage solution.
Basis of Presentation and Consolidation
The accompanying condensed consolidated financial statements are presented in accordance with accounting principles generally accepted in the United States (“U.S.”), or GAAP. The condensed consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries. All intercompany balances and transactions have been eliminated in consolidation.
Unaudited Interim Financial Information
These accompanying unaudited condensed consolidated financial statements have been prepared pursuant to the rules and regulations of the SEC for interim financial reporting. In the opinion of management, these unaudited condensed consolidated financial statements reflect all adjustments, consisting of normal recurring items, considered necessary to present fairly the Company’s financial condition, results of operations, comprehensive income (loss), stockholders’ equity and cash flows for the interim periods indicated. The results of operations for the three and six months ended March 31,June 30, 2020 are not necessarily indicative of the operating results for the full year.
Use of Estimates
The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of income and expenses during the reporting period. Significant estimates and assumptions reflected in the financial statements include revenue recognition, allowance for doubtful accounts, stock-based compensation, inventory valuation, accrued warranty obligations, fair value of debt derivatives, fair value of acquired intangible assets and goodwill, useful lives of acquired intangible assets and property and equipment, incremental borrowing rate for right-of-use assets and lease liability, legal contingencies, and tax valuation allowance. These estimates are based on information available as of the date of the financial statements; therefore, actual results could differ materially from management’s estimates using different assumptions or under different conditions.
The worldwide spread of the COVID-19 pandemic is expected to resultvirus has resulted in a global slowdown of economic activity which is likely to decreasedecreased demand for a broad variety of goods and services, including from the Company’sour customers, while also disrupting sales channels and marketing activities for an unknown period of time until the disease is contained.and may continue to create significant uncertainty in future operational and financial performance. The Company expects this to have aresult in negative impact on its sales and its results of operations. In preparing the Company’s condensed consolidated financial statements in accordance with GAAP, the Company is required to make estimates, assumptions and judgments that affect the amounts reported in its financial statements and the accompanying disclosures. Estimates and assumptions about future events and their effects cannot be determined with certainty and therefore require the exercise of judgment. As of the date of issuance of these financial statements, the Company is not aware of any specific event or circumstance that would require the Company to update its estimates, judgments or revise the carrying value of its assets or liabilities. These estimates may change, as new events occur and additional information is obtained, and are recognized in the condensed consolidated financial statements as soon as they become known. Actual results could differ from those estimates and any such differences may be material to the Company’s financial statements.

 
Enphase Energy, Inc. | 2020 Form 10-Q | 6

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ENPHASE ENERGY, INC.
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
(Unaudited)


Summary of Significant Accounting Policies
There have been no significant changes to the Company’s significant accounting policies in Note 2. “Summary of Significant Accounting Policies,” of the notes to consolidated financial statements included in Item 8 of the Company’s 2019 Annual Report on Form 10-K.
Recently Adopted Accounting Pronouncements
In August 2018, the FASB issued ASU 2018-15, “Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract,” to reduce diversity in practice in accounting for the costs of implementing cloud computing arrangements that are service contracts. ASU 2018-15 allows entities to apply the guidance in the ASC 350-40, “Intangibles–Goodwill and Other–Internal-Use Software,” to determine which implementation costs are eligible to be capitalized as assets in a cloud computing arrangement that is considered a service contract. ASU 2018-15 is effective for fiscal years beginning after December 15, 2019, and interim periods within those fiscal years. Early adoption is permitted, including adoption in any interim period. Entities have the option to apply the guidance prospectively to all implementation costs incurred after the date of adoption or retrospectively and are required to make certain disclosures in the interim and annual period of adoption. The Company adopted the new standard effective January 1, 2020 on a prospective basis and the adoption of this guidance did not have a material impact on its consolidated financial statements.
In June 2016, the FASB issued ASU 2016-13, “Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments,” which requires the measurement and recognition of expected credit losses for financial assets held at amortized cost. ASU 2016-13 replaces the existing incurred loss impairment model with a current expected credit loss (CECL) model which will result in earlier recognition of credit losses. On January 1, 2020, the Company on a prospective basis adopted Topic 326, the measurement of expected credit losses under the CECL model is applicable to financial assets measured at amortized cost, including accounts receivable. The adoption of this guidance did not have a material impact on the Company’s consolidated financial statements.
2.
REVENUE RECOGNITION
Disaggregated Revenue
The Company has one business activity, which is the design, manufacture and sale of solutions for the solar photovoltaic (“PV”) industry. Disaggregated revenue by primary geographical market and timing of revenue recognition for the Company’s single product line are as follows:
Three Months Ended
March 31,
Three Months Ended
June 30,
 Six Months Ended
June 30,
2020 20192020 2019 2020 2019
(In thousands)(In thousands)
Primary geographical markets:          
United States$179,600
 $77,686
$100,791
 $99,909
 $280,391
 $177,595
International25,945
 22,464
24,747
 34,185
 50,692
 56,649
Total$205,545
 $100,150
$125,538
 $134,094
 $331,083
 $234,244
          
Timing of revenue recognition:          
Products delivered at a point in time$194,679
 $90,400
$114,299
 $124,336
 $308,978
 $214,736
Products and services delivered over time10,866
 9,750
11,239
 9,758
 22,105
 19,508
Total$205,545
 $100,150
$125,538
 $134,094
 $331,083
 $234,244


 
Enphase Energy, Inc. | 2020 Form 10-Q | 7

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ENPHASE ENERGY, INC.
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
(Unaudited)


Contract Balances
Receivables, and contract assets and contract liabilities from contracts with customers are as follows:
March 31,
2020
 December 31,
2019
June 30,
2020
 December 31,
2019
(In thousands)(In thousands)
Receivables$95,484
 $145,413
$89,504
 $145,413
Short-term contract assets (Prepaid expenses and other assets)15,928
 15,055
16,416
 15,055
Long-term contract assets (Other assets)45,361
 42,087
46,960
 42,087
Short-term contract liabilities (Deferred revenues)39,022
 81,783
40,256
 81,783
Long-term contract liabilities (Deferred revenues)106,205
 100,204
110,977
 100,204

The Company receives payments from customers based upon contractual billing schedules. Accounts receivable are recorded when the right to consideration becomes unconditional. Contract assets include deferred product costs and commissions associated with the deferred revenue and will be amortized along with the associated revenue. The Company had 0 asset impairment charges related to contract assets in the three and six months ended March 31,June 30, 2020.
Significant changes in the balances of contract assets (prepaid expenses and other assets) during the period are as follows (in thousands):
Contract Assets  
Balance on December 31, 2019$57,142
$57,142
Amount recognized(4,140)(8,439)
Increase8,287
14,673
Balance as of March 31, 2020$61,289
Balance as of June 30, 2020$63,376

Contract liabilities are recorded as deferred revenue on the accompanying condensed consolidated balance sheets and include payments received in advance of performance obligations under the contract and are realized when the associated revenue is recognized under the contract.
Significant changes in the balances of contract liabilities (deferred revenues) during the period are as follows (in thousands):
Contract Liabilities  
Balance on December 31, 2019$181,987
$181,987
Revenue recognized(55,373)(66,841)
Increase due to billings18,613
36,087
Balance as of March 31, 2020$145,227
Balance as of June 30, 2020$151,233


 
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ENPHASE ENERGY, INC.
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
(Unaudited)


Remaining Performance Obligations
Estimated revenue expected to be recognized in future periods related to performance obligations that are unsatisfied or partially unsatisfied at the end of the reporting period are as follows:
March 31,
2020
June 30,
2020
(In thousands)(In thousands)
Fiscal year:  
2020 (remaining nine months)$30,514
2020 (remaining six months)$21,679
202133,553
36,389
202228,527
31,357
202322,743
25,564
202417,566
20,373
Thereafter12,324
15,871
Total$145,227
$151,233

3.OTHER FINANCIAL INFORMATION
Accounts Receivable, Net
The Company receives payments from customers based upon contractual billing schedules. Accounts receivable are recorded when the right to consideration becomes unconditional.
Accounts receivable, net consist of the following:
March 31,
2020
 December 31,
2019
June 30,
2020
 December 31,
2019
(In thousands)(In thousands)
Accounts receivable$95,858
 $145,977
$89,800
 $145,977
Allowance for doubtful accounts(374) (564)(296) (564)
Accounts receivable, net$95,484
 $145,413
$89,504
 $145,413

Allowance for Doubtful Accounts
The Company maintains allowances for doubtful accounts for uncollectible accounts receivable. Management estimates anticipated losses from doubtful accounts based on financial health of customers, days past due, collection history and existing economic conditions. The following table sets forth activities in the allowance for doubtful accounts for the periods indicated.
Three Months Ended
June 30,
 Six Months Ended
June 30,
March 31,
2020
 December 31,
2019
2020
(In thousands)(In thousands)
Balance, at beginning of the period$564
 $2,138
$374
 $564
Net charges to expenses104
 217
81
 185
Write-offs, net of recoveries(294) (1,791)(159) (453)
Balance, at end of the period$374
 $564
$296
 $296


 
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Table of Contents
ENPHASE ENERGY, INC.
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
(Unaudited)


Inventory
Inventory consist of the following:
March 31,
2020
 December 31,
2019
June 30,
2020
 December 31,
2019
(In thousands)(In thousands)
Raw materials$5,018
 $4,197
$5,800
 $4,197
Finished goods29,599
 27,859
25,386
 27,859
Total inventory$34,617
 $32,056
$31,186
 $32,056

Accrued Liabilities
Accrued liabilities consist of the following:
March 31,
2020
 December 31,
2019
June 30,
2020
 December 31,
2019
(In thousands)(In thousands)
Salaries, commissions, incentive compensation and benefits$9,200
 $5,524
$3,607
 $5,524
Customer rebates and sales incentives21,601
 24,198
20,741
 24,198
Freight3,734
 4,908
2,640
 4,908
Operating lease liabilities, current3,511
 3,170
3,570
 3,170
Other11,771
 9,292
16,133
 9,292
Total accrued liabilities$49,817
 $47,092
$46,691
 $47,092

4.
GOODWILL AND INTANGIBLE ASSETS
The Company’s goodwill and purchased intangible assets as of March 31,June 30, 2020 and December 31, 2019 are as follows:
March 31, 2020 December 31, 2019June 30, 2020 December 31, 2019
Gross Accumulated Amortization Net Gross Accumulated Amortization NetGross Accumulated Amortization Net Gross Accumulated Amortization Net
(In thousands)(In thousands)
Goodwill$24,783
 $
 $24,783
 $24,783
 $
 $24,783
$24,783
 $
 $24,783
 $24,783
 $
 $24,783
                      
Intangible assets:                      
Other indefinite-lived intangibles$286
 $
 $286
 $286
 $
 $286
$286
 $
 $286
 $286
 $
 $286
Intangible assets with finite lives:  
          
        
Developed technology13,100
 (3,639) 9,461
 13,100
 (3,093) 10,007
13,100
 (4,185) 8,915
 13,100
 (3,093) 10,007
Customer relationships23,100
 (3,515) 19,585
 23,100
 (2,814) 20,286
23,100
 (4,215) 18,885
 23,100
 (2,814) 20,286
Total purchased intangible assets$36,486
 $(7,154) $29,332
 $36,486
 $(5,907) $30,579
$36,486
 $(8,400) $28,086
 $36,486
 $(5,907) $30,579


 
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ENPHASE ENERGY, INC.
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
(Unaudited)


Amortization expense related to finite-lived intangible assets are as follows:
Three Months Ended
March 31,
Three Months Ended
June 30,
 Six Months Ended
June 30,
2020 20192020 2019 2020 2019
(In thousands)(In thousands)
Developed technology, and patents and licensed technology$546
 $546
$546
 $546
 $1,092
 $1,092
Customer relationships701
 636
700
 635
 1,401
 1,271
Total amortization expense$1,247
 $1,182
$1,246
 $1,181
 $2,493
 $2,363

Amortization of developed technology, patents and licensed technology is recorded to sales and marketing expense. The developed technology acquired from the Company’s acquisition of SunPower Corporation’s (“SunPower”) microinverter business in August 2018 was embedded in the microinverters that SunPower sold to its customers. The Company does not actively use the developed technology acquired from SunPower and holds the developed technology to prevent others from using it. Accordingly, the Company accounts for the developed technology as a defensive intangible asset and amortizes the associated value over a period of six years from the date of acquisition.
The master supply agreement (“MSA”) entered into with SunPower in August 2018 provides the Company with the exclusive right to supply SunPower with module level power electronics for a period of five years, with options for renewals. The exclusivity arrangement extends throughout the term of the MSA, which comprises all of the expected cash flows from the customer relationship intangible asset, and was a condition to, and was an essential part of the acquisition of SunPower’s microinverter business by the Company. As the fair value ascribed to the customer relationship intangible asset represents payments to a customer, the Company amortizes the value of the customer relationship intangible asset as a reduction to revenue using a pattern of economic benefit method over a useful life of nine years.
5.
WARRANTY OBLIGATIONS
The Company’s warranty activities were as follows:
Three Months Ended
March 31,
Three Months Ended
June 30,
 Six Months Ended
June 30,
2020 20192020 2019 2020 2019
(In thousands)(In thousands)
Warranty obligations, beginning of period$37,098
 $31,294
$37,501
 $31,042
 $37,098
 $31,294
Accruals for warranties issued during period1,524
 858
766
 1,312
 2,290
 2,170
Changes in estimates1,677
 804
1,748
 699
 3,425
 1,503
Settlements(3,270) (2,296)(2,578) (2,206) (5,848) (4,502)
Increase due to accretion expense774
 551
804
 550
 1,578
 1,101
Other(302) (169)(334) 1,597
 (636) 1,428
Warranty obligations, end of period37,501
 31,042
37,907
 32,994
 37,907
 32,994
Less: current portion(9,678) (7,925)(10,170) (7,468) (10,170) (7,468)
Noncurrent$27,823
 $23,117
$27,737
 $25,526
 $27,737
 $25,526

Changes in Estimates
For the three and six months ended June 30, 2020, the Company recorded additional warranty expense of $1.7 million and $3.4 million, respectively, based on continuing analysis of field performance data and diagnostic root-cause failure analysis primarily relating to its prior generation products.

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ENPHASE ENERGY, INC.
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
(Unaudited)


6.
FAIR VALUE MEASUREMENTS
The accounting guidance defines fair value as the price that would be received from selling an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. When determining the fair value measurements for assets and liabilities recorded at fair value, the Company considers the principal or most advantageous market in which it would transact and considers assumptions that market participants would use when pricing the asset or liability, such as inherent risk, transfer restrictions, and risk of nonperformance.

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ENPHASE ENERGY, INC.
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
(Unaudited)


The fair value hierarchy requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. An asset’s or liability’s categorization within the fair value hierarchy is based upon the lowest level of input that is significant to the fair value measurement. Three levels of inputs may be used to measure fair value:
Level 1—Valuations based on quoted prices in active markets for identical assets or liabilities that the Company is able to access. Since valuations are based on quoted prices that are readily and regularly available in an active market, valuation of such assets or liabilities do not entail a significant degree of judgment.
Level 2—Valuations based on one or more quoted prices in markets that are not active or for which all significant inputs are observable, either directly or indirectly.
Level 3—Valuations based on inputs that are unobservable and significant to the overall fair value measurement.
Level 1. The following table presentsCompany considers all highly liquid investments, such as certificates of deposit and money market instruments with maturities of three months or less at the Company’s assetstime of acquisition to be cash equivalents. For all periods presented, its cash balances consist of amounts held in non-interest-bearing and liabilities that were measured at fair value on a recurring basisinterest-bearing deposits and its categorizationmoney market accounts and are within Level 1 of the fair value hierarchy.hierarchy because they are valued using quoted market prices for identical instruments in active markets. As of June 30, 2020, cash and cash equivalents balance includes money market funds of $598.5 million.
Level 2.
 March 31, 2020 December 31, 2019
 (In thousands)
 Level 2 Level 3 Level 2 Level 3
Assets:       
Convertible notes hedge$47,885
 $
 $
 $
        
Liabilities:       
        
Debt, non-current       
Convertible notes embedded derivative45,100
 
 
 
Warrants liability38,637
 
 
 
        
Warranty obligations       
Current
 6,578
 
 6,794
Non-current
 13,847
 
 13,012
Total warranty obligations measured at fair value

20,425



19,806
Total liabilities measured at fair value$83,737
 $20,425

$

$19,806
Convertible Notes due 2025 Derivatives

On March 9, 2020, the Company issued $320 million aggregate principal amount of 0.25% convertible senior notes due 2025 (the “Notes due 2025”). Concurrently with the issuance of Notes due 2025, the Company entered into privately-negotiated convertible note hedge and warrant transactions which in combination are intended to reduce the potential dilution from the conversion of the Notes due 2025. On May 20, 2020, at the Company’s annual meeting of stockholders, the stockholders approved an amendment to its certificate of incorporation to increase the number of authorized shares of the Company’s common stock. As a result, the Company satisfied the share reservation condition (as defined in the relevant indenture associated with the Notes due 2025). The Company will now be able to settle the Notes due 2025, convertible notes hedge and warrants through payment or delivery, as the case may be, of cash, shares of its common stock or a combination thereof, at the Company’s election. Accordingly, on May 20, 2020, the embedded derivative liability, convertible notes hedge and warrants liability were remeasured at a fair value of $116.3 million, $117.1 million and $96.4 million, respectively, and were then reclassified to additional paid-in-capital in the condensed consolidated balance sheet in the second quarter of 2020 and are no longer remeasured as long as they continue to meet the conditions for equity classification. See Note
8. “Debt” for additional information related to these transactions.
The fair value of the Convertible notes embedded derivative was estimated using Binomial Lattice model and the fair value of Convertible notes hedge and Warrants liability was estimated using Black-Scholes-Merton model. The significant observable inputs, either directly or indirectly, and assumptions used in the models to calculate the fair value of the derivatives include the Company’s common stock price, exercise price of the derivatives, risk-free interest rate, volatility, annual coupon rate and remaining contractual term.

 
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ENPHASE ENERGY, INC.
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
(Unaudited)


Level 1. The Company's cash and cash equivalents primarily include highly liquid money market fund instruments and are within Level 1 of the fair value hierarchy because they are valued using quoted market prices for identical instruments in active markets. As of March 31, 2020, cash and cash equivalents balance includes money market funds of $542.2 million.
Level 2.
Convertible Notes due 2025 Derivatives
On March 9, 2020, the Company issued $320 million aggregate principal amount of 0.25% convertible senior notes due 2025 (the “Notes due 2025”) as further described in Note. 8 “Debt”. Concurrently with the issuance of the Notes due 2025, the Company entered into privately-negotiated convertible note hedge and warrant transactions which in combination are intended to reduce the potential dilution from the conversion of the Notes due 2025 and to effectively increase the overall conversion price from $81.54 to $106.94 per share. Initially, conversion of the Notes due 2025 will be settled solely in cash; however, following satisfaction of certain share reservation conditions (as defined in the relevant Indenture), conversion of the Notes due 2025 may be settled in cash, shares of the Company’s common stock or a combination of cash and shares of its common stock, at the Company’s election. The conversion option associated with the Notes due 2025 currently meets the criteria for an embedded derivative liability which required bifurcation and separate accounting. In addition, the privately-negotiated convertible note hedge and warrant transactions are also currently classified as a derivative asset and liability, respectively, on the Company’s condensed consolidated balance sheet. On the date the Company increases its authorized shares of common stock and satisfies the share reservation condition, the derivative asset and liabilities will be reclassified to additional paid-in capital as the equity classification criteria is met. Changes in the fair value of these derivatives prior to being classified in equity are reflected in other income (expense), net, in the Company’s condensed consolidated statement of operations.
The fair value of the Convertible notes embedded derivative is estimated using Binomial Lattice model and the fair value of Convertible notes hedge and Warrants liability is estimated using Black-Scholes-Merton model. Based on the fair value hierarchy, the Company classified the Convertible notes embedded derivative, Convertible notes hedge and Warrants liability derivatives (collectively the “derivatives”) to be Level 2 as significant inputs are observable, either directly or indirectly. The significant inputs and assumptions used in the models to calculate the fair value of the derivatives include the Company’s common stock price, exercise price of the derivatives, risk-free interest rate, volatility, annual coupon rate and remaining contractual term.
Notes due 2025 and Notes due 2024. The Company carries the Notes due 2025 and Notes due 2024 (as defined below) at face value less unamortized discount and issuance costs on its condensed consolidated balance sheets. The fair value of the Notes due 2025 and Notes due 2024 of $262.3$288.9 million and $252.9$350.5 million, respectively, was determined based on the closing trading prices per $100 principal amount as of the last day of trading for the period. The Company considers the fair value of the Notes due 2025 and Notes due 2024 to be a Level 2 measurement as they are not actively traded.
Level 3.
Warranty Obligations.
The following table presents the Company’s warranty obligation that were measured at fair value on a recurring basis and its categorization within the fair value hierarchy.
 June 30,
2020
 December 31, 2019
 (In thousands)
 Level 3 Level 3
Liabilities:   
Warranty obligations   
Current$6,917
 $6,794
Non-current14,215
 13,012
Total warranty obligations measured at fair value21,132
 19,806
Total liabilities measured at fair value$21,132
 $19,806

Fair Value Option for Warranty Obligations Related to Microinverters Sold Since January 1, 2014
The Company estimates the fair value of warranty obligations by calculating the warranty obligations in the same manner as for sales prior to January 1, 2014 and applying an expected present value technique to that result. The expected present value technique, an income approach, converts future amounts into a single current discounted amount. In addition to the key estimates of failure rates, claim rates and replacement costs, the Company used certain Level 3 inputs which are unobservable and significant to the overall fair value measurement. Such additional assumptions included a discount rate based on the Company’s credit-adjusted risk-free rate and compensation comprised of a profit element and risk premium required of a market participant to assume the obligation.
The following table provides information regarding changes in nonfinancial liabilities related to the Company’s warranty obligations measured at fair value on a recurring basis using significant unobservable inputs (Level 3) for the periods indicated.
 Three Months Ended
June 30,
 Six Months Ended
June 30,
 2020 2019 2020 2019
 (In thousands)
Balance at beginning of period$20,425
 $12,065
 $19,806
 $11,757
Accruals for warranties issued during period766
 1,312
 2,290
 2,170
Changes in estimates983
 519
 1,598
 860
Settlements(1,511) (1,188) (3,504) (2,460)
Increase due to accretion expense804
 550
 1,578
 1,101
Other(335) 1,598
 (636) 1,428
Balance at end of period$21,132
 $14,856
 $21,132
 $14,856


 
Enphase Energy, Inc. | 2020 Form 10-Q | 13

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ENPHASE ENERGY, INC.
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
(Unaudited)


The following table provides information regarding changes in nonfinancial liabilities related to the Company’s warranty obligations measured at fair value on a recurring basis using significant unobservable inputs (Level 3) for the periods indicated.
 Three Months Ended
March 31,
 2020 2019
 (In thousands)
Balance at beginning of period$19,806
 $11,757
Accruals for warranties issued during period1,524
 858
Changes in estimates615
 341
Settlements(1,993) (1,272)
Increase due to accretion expense774
 551
Other(301) (170)
Balance at end of period$20,425
 $12,065

Quantitative and Qualitative Information about Level 3 Fair Value Measurements
As of March 31,June 30, 2020 and December 31, 2019, the significant unobservable inputs used in the fair value measurement of the Company’s liabilities designated as Level 3 are as follows:
 
Percent Used
(Weighted Average)
 
Percent Used
(Weighted Average)
Item Measured at Fair Value Valuation Technique Description of Significant Unobservable Input March 31,
2020
 December 31,
2019
 Valuation Technique Description of Significant Unobservable Input June 30,
2020
 December 31,
2019
Warranty obligations for microinverters sold since January 1, 2014 Discounted cash flows Profit element and risk premium 15% 14% Discounted cash flows Profit element and risk premium 15% 14%
 Credit-adjusted risk-free rate 16% 16%  Credit-adjusted risk-free rate 16% 16%
Sensitivity of Level 3 Inputs - Warranty Obligations
Each of the significant unobservable inputs is independent of the other. The profit element and risk premium are estimated based on requirements of a third-party participant willing to assume the Company’s warranty obligations. The credit‑adjusted risk‑free rate (“discount rate”) is determined by reference to the Company’s own credit standing at the fair value measurement date. Increasing the profit element and risk premium input by 100 basis points would result in a $0.2 million increase to the liability. Decreasing the profit element and risk premium by 100 basis points would result in a $0.2 million reduction of the liability. Increasing the discount rate by 100 basis points would result in a $0.9 million reduction of the liability. Decreasing the discount rate by 100 basis points would result in a $1.0 million increase to the liability.
7.RESTRUCTURING
Restructuring expense consist of the following:
Three Months Ended
March 31,
Three Months Ended
June 30,
 Six Months Ended
June 30,
2020 20192020 2019 2020 2019
(In thousands)(In thousands)
Redundancy and employee severance and benefit arrangements$
 $468
$
 $631
 $
 $1,099
Lease loss reserves
 (100)
 
 
 (100)
Total restructuring charges$
 $368
$
 $631
 $
 $999


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ENPHASE ENERGY, INC.
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
(Unaudited)


2018 Plan
In the third quarter of 2018, the Company began implementing restructuring actions (the “2018 Plan”) to lower its operating expenses. The restructuring actions include reorganization of the Company’s global workforce, elimination of certain non-core projects and consolidation of facilities. The Company completed its restructuring activities under the 2018 Plan in 2019.

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ENPHASE ENERGY, INC.
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
(Unaudited)


8.
DEBT
The following table provides information regarding the Company’s long-term debt.
March 31,
2020
 December 31,
2019
June 30,
2020
 December 31,
2019
(In thousands)(In thousands)
Convertible notes      
Notes due 2025$320,000
 $
$320,000
 $
Less: unamortized discount and issuance costs(75,450) 
(72,000) 
Carrying amount of Notes due 2025244,550
 
248,000
 
   
Notes due 2025 embedded derivative45,100
 
      
Notes due 2024132,000
 132,000
132,000
 132,000
Less: unamortized discount and issuance costs(34,087) (35,815)(32,301) (35,815)
Carrying amount of Notes due 202497,913
 96,185
99,699
 96,185
      
Notes due 20235,000
 5,000
5,000
 5,000
Less: unamortized issuance costs(132) (143)(122) (143)
Carrying amount of Notes due 20234,868
 4,857
4,878
 4,857
      
Sale of long-term financing receivable recorded as debt3,352
 4,501
2,868
 4,501
Total carrying amount of debt395,783
 105,543
355,445
 105,543
Less: current portion of convertible notes and long-term financing receivable recorded as debt(100,567) (2,884)(102,271) (2,884)
Long-term debt$295,216
 $102,659
$253,174
 $102,659

Convertible Senior Notes due 2025
On March 9, 2020, the Company issued $320.0 million aggregate principal amount of the Notes due 2025. The Notes due 2025 are general unsecured obligations and bear interest at an annual rate of 0.25% per year, payable semi-annually on March 1 and September 1 of each year, beginning September 1, 2020. The Notes due 2025 are governed by an indenture between the Company and U.S. Bank National Association, as trustee. The Notes due 2025 will mature on March 1, 2025, unless earlier repurchased by the Company or converted at the option of the holders. The Company may not redeem the notes prior to the maturity date, and no sinking fund is provided for the notes. The Notes due 2025 may be converted, under certain circumstances as described below, based on an initial conversion rate of 12.2637 shares of common stock per $1,000 principal amount (which represents an initial conversion price of $81.54 per share). The conversion rate for the Notes due 2025 will be subject to adjustment upon the occurrence of certain specified events but will not be adjusted for accrued and unpaid interest. In addition, upon the occurrence of a make-whole fundamental change (as defined in the relevant indenture), the Company will, in certain circumstances, increase the conversion rate by a number of additional shares for a holder that elects to convert its notes in connection with such make-whole fundamental change. The Company received approximately $313.0 million in net proceeds, after deducting the initial purchasers’ discount, from the issuance of the Notes due 2025.

 
Enphase Energy, Inc. | 2020 Form 10-Q | 15

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ENPHASE ENERGY, INC.
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
(Unaudited)


The Notes due 2025 may be converted prior to the close of business on the business day immediately preceding September 1, 2024, in multiples of $1,000 principal amount, at the option of the holder only under the following circumstances: (1) during any calendar quarter commencing after the calendar quarter ending on June 30, 2020 (and only during such calendar quarter), if the last reported sale price of the Company’s common stock for at least 20 trading days (whether or not consecutive) during a period of 30 consecutive trading days ending on, and including, the last trading day of the immediately preceding calendar quarter is greater than or equal to 130% of the conversion price on each applicable trading day; (2) during the five business day period after any five5 consecutive trading day period (the “measurement period”) in which the “trading price” (as defined in the relevant indenture) per $1,000 principal amount of notes for each trading day of the measurement period was less than 98% of the product of the last reported sale price of the Company’s common stock and the conversion rate on each such trading day; or (3) upon the occurrence of specified corporate events. On and after September 1, 2024 until the close of business on the second scheduled trading day immediately preceding the maturity date of March 1, 2025, holders may convert their notes at any time, regardless of the foregoing circumstances. Upon the occurrence of a fundamental change (as defined in the relevant indenture), holders may require the Company to repurchase all or a portion of their Notes due 2025 for cash at a price equal to 100% of the principal amount of the notes to be repurchased plus any accrued and unpaid interest to, but excluding, the fundamental change repurchase date.
As ofFor the period from March 31,9, 2020, the issuance date, through May 19, 2020, the number of authorized and unissued shares of the Company’s common stock that are not reserved for other purposes iswas less than the maximum number of underlying shares that willwould be required to settle the Notes due 2025 into equity. Accordingly, unless and until the Company hashad a number of authorized shares that havewere not been issued or reserved for any other purpose that equalsequaled or exceedsexceeded the maximum number of underlying shares (“share reservation condition”), the Company willwould be required to pay to the converting holder in respect of each $1,000 principal amount of notes being converted solely in cash in an amount equal to the sum of the daily conversion values for each of the 20 consecutive trading days during the related observation period. However, following satisfaction of the share reservation condition, the Company maycould settle conversions of notes through payment or delivery, as the case may be, of cash, shares of the Company’s common stock or a combination of cash and shares of its common stock, at the Company’s election.
In accounting for the issuance of the Notes due 2025, on March 9, 2020, the conversion option of the Notes due 2025 was deemed an embedded derivative requiring bifurcation from the Notes due 2025 (“host contract”) and separate accounting as an embedded derivative liability, as a result of the Company not having the necessary number of authorized but unissued shares of its common stock available to settle the conversion option of the Notes due 2025 in shares. The proceeds from the Notes due 2025 arewere first allocated to the embedded derivative liability and the remaining proceeds arewere then allocated to the host contract. On March 9, 2020, the carrying amount of the embedded derivative liability of $68.7 million representing the conversion option was determined using the Binomial Lattice model and the remaining $251.3 million was allocated to the host contract. The difference between the principal amount of the Notes due 2025 and the fair value of the host contract (the “debt discount”) is amortized to interest expense using the effective interest method over the term of the Notes due 2025.
On May 20, 2020, at the Company’s annual meeting of stockholders, the stockholders approved an amendment to the Amended and Restated Certificate of Incorporation to increase the number of authorized shares of the Company’s common stock, par value $0.00001 per share, from 150,000,000 shares to 200,000,000 shares (the “Amendment”). The Amendment became effective upon filing with the Secretary of State of Delaware on May 20, 2020. As a result, the Company satisfied the share reservation condition. The Company may now settle the Notes due 2025 and warrants issued in conjunction with the Notes due 2025 through payment or delivery, as the case may be, of March 31,cash, shares of its common stock or a combination of cash and shares of its common stock, at the Company’s election. Accordingly, on May 20, 2020, the embedded derivative liability is included in Debt, non-currentwas remeasured at a fair value of $116.3 million and was then reclassified to additional paid-in-capital in the condensed consolidated balance sheet in the second quarter of 2020 and is no longer remeasured as long as it continues to meet the conditions for equity classification. The Company recorded the change in the fair value of the embedded derivative is included in other income (expense),expense, net in the condensed consolidated statement of operations.
The following table presentsoperations during the fair valuethree and the change in fair value for convertible note embedded derivative (in thousands):
Convertible note embedded derivative 
Fair value as of March 09, 2020$68,700
Change in the fair value(23,600)
Fair value as of March 31, 2020$45,100

six months ended June 30, 2020.

 
Enphase Energy, Inc. | 2020 Form 10-Q | 16

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ENPHASE ENERGY, INC.
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
(Unaudited)


The following table presents the fair value and the change in fair value for the convertible note embedded derivative (in thousands):
Convertible note embedded derivative 
(In thousands) 
Fair value as of March 9, 2020$68,700
Change in the fair value(23,600)
Fair value as of March 31, 202045,100
Change in the fair value71,200
Fair value as of May 20, 2020$116,300

Debt issuance costs for the issuance of the Notes due 2025 were approximately $7.6 million, consisting of initial purchasers' discount and other issuance costs. In accounting for the transaction costs, the Company allocated the total amount incurred to the Notes due 2025 host contract. Transaction costs were recorded as debt issuance cost (presented as contra debt in the condensed consolidated balance sheet) and are being amortized to interest expense over the term of the Notes due 2025.
The following table presents the total amount of interest cost recognized relating to the Notes due 2025:
Three Months Ended
March 31, 2020
Three Months Ended
June 30, 2020
 Six Months Ended
June 30, 2020
(In thousands)(In thousands)
Contractual interest expense$49
$200
 $249
Amortization of debt discount743
3,069
 3,812
Amortization of debt issuance costs87
381
 468
Total interest cost recognized$879
$3,650
 $4,529

The derived effective interest rate on the Notes due 2025 host contract was determined to be 5.18%, which remain unchanged from the date of issuance. The remaining unamortized debt discount was $68.0$64.9 million as of March 31,June 30, 2020, will be amortized over approximately 4.94.7 years.
Notes due 2025 Hedge and Warrant Transactions
In connection with the offering of the Notes due 2025, the Company entered into privately-negotiated convertible note hedge transactions pursuant to which the Company has the option to purchase a total of approximately 3.9 million shares of its common stock (subject to anti-dilution adjustments), which is the same number of shares initially issuable upon conversion of the notes, at a price of $81.54 per share, which is the initial conversion price of the Notes due 2025. The total cost of the convertible note hedge transactions was approximately $89.1 million. The convertible note hedge transactions are expected generally to reduce potential dilution to the Company’s common stock upon any conversion of the Notes due 2025 and/or offset any cash payments the Company is required to make in excess of the principal amount of converted notes, as the case may be. As of March 31,June 30, 2020, the Company had not purchased any shares under the convertible note hedge transactions.
Additionally, the Company separately entered into privately-negotiated warrant transactions (the “Warrants”) whereby the Company sold warrants to acquire approximately 3.9 million shares of the Company’s common stock (subject to anti-dilution adjustments) at an initial strike price of $106.94 per share. The Company received aggregate proceeds of approximately $71.6 million from the sale of the Warrants. If the market value per share of the Company’s common stock, as measured under the Warrants, exceeds the strike price of the Warrants, the Warrants will have a dilutive effect on the Company’s earnings per share, unless the Company elects, subject to certain conditions, to settle the Warrants in cash. Taken together, the purchase of the convertible note hedges and the sale of the Warrants are intended to reduce potential dilution from the conversion of the Notes due 2025 and to effectively increase the overall conversion price from $81.54 to $106.94 per share. The Warrants are only exercisable on the applicable expiration dates in accordance with the agreements relating to each of the Warrants. Subject to the other terms of the Warrants, the first expiration date applicable to the Warrants is June 1, 2025, and the final expiration date applicable to the Warrants is September 23, 2025. As of March 31,June 30, 2020, the Warrants had not been exercised and remained outstanding.
For the period from March 9, 2020, the issuance date of the convertible notes hedge and warrant transactions, through March 31, 2020, the number of authorized and unissued shares of the Company’s common stock that are not reserved for other purposes is less than the maximum number of underlying shares that will be required to settle the Notes due 2025 through the delivery of shares of the Company’s common stock. Accordingly, the convertibles note hedge transactions and the warrants may only be settled on net cash settlement basis. As a result the convertible note hedge transactions and the warrants have been classified as a Convertible notes hedge asset and Warrants liability, respectively, in the condensed consolidated balance sheet and the change in fair value of derivative is included in other income (expense), net in the condensed consolidated statement of operations.

 
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ENPHASE ENERGY, INC.
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
(Unaudited)


For the period from March 9, 2020, the issuance date of the convertible notes hedge and warrant transactions, through May 19, 2020, the number of authorized and unissued shares of the Company’s common stock that are not reserved for other purposes was less than the maximum number of underlying shares that will be required to settle the Notes due 2025 through the delivery of shares of the Company’s common stock. Accordingly, the convertibles note hedge and the warrant transactions could only be settled on net cash settlement basis. As a result the convertible note hedge and the warrants transaction were classified as a Convertible notes hedge asset and Warrants liability, respectively, in the condensed consolidated balance sheet and the change in fair value of derivatives was included in other expense, net in the condensed consolidated statement of operations.
On May 20, 2020, at the Company’s annual meeting of stockholders, the stockholders approved the Amendment, and as a result, the Convertible notes hedge asset and Warrants liabilities were remeasured at a fair value of $117.1 million and $96.4 million, respectively, and were then reclassified to additional paid-in-capital in the condensed consolidated balance sheet in the second quarter of 2020 and is no longer remeasured as long as they continue to meet the conditions for equity classification. The change in the fair value of the Convertible notes hedge asset and Warrants liability were recorded in other expense, net in the condensed consolidated statements of operations during the three and six months ended June 30, 2020.
The following table presents the fair value and the change in fair value for the Convertible notes hedge asset and Warrants liability (in thousands):liability:
Convertible notes hedge Warrants liabilityConvertible notes hedge Warrants liability
(In thousands)(In thousands)
Fair value as of March 09, 2020$89,056
 $71,552
Fair value as of March 9, 2020$89,056
 $71,552
Change in the fair value(41,171) (32,915)(41,171) (32,915)
Fair value as of March 31, 2020$47,885
 $38,637
47,885
 38,637
Change in the fair value69,223
 57,715
Fair value as of May 20, 2020$117,108
 $96,352

Convertible Senior Notes due 2024
On June 5, 2019, the Company issued $132.0 million aggregate principal amount of 1.0% convertible senior notes due 2024 (the “Notes due 2024”). The Notes due 2024 are general unsecured obligations and bear interest at an annual rate of 1.0% per year, payable semi-annually on June 1 and December 1 of each year, beginning December 1, 2019. The Notes due 2024 are governed by an indenture between the Company and U.S. Bank National Association, as trustee. The Notes due 2024 will mature on June 1, 2024, unless earlier repurchased by the Company or converted at the option of the holders. The Company may not redeem the notes prior to the maturity date, and no sinking fund is provided for the notes. The Notes due 2024 may be converted, under certain circumstances as described below, based on an initial conversion rate of 48.7781 shares of common stock per $1,000 principal amount (which represents an initial conversion price of $20.5010 per share). The conversion rate for the Notes due 2024 will be subject to adjustment upon the occurrence of certain specified events but will not be adjusted for accrued and unpaid interest. In addition, upon the occurrence of a make-whole fundamental change (as defined in the relevant indenture), the Company will, in certain circumstances, increase the conversion rate by a number of additional shares for a holder that elects to convert its notes in connection with such make-whole fundamental change. The Company received approximately $128.0 million in net proceeds, after deducting the initial purchasers’ discount, from the issuance of the Notes due 2024.

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ENPHASE ENERGY, INC.
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
(Unaudited)


The Notes due 2024 may be converted on any day prior to the close of business on the business day immediately preceding December 1, 2023, in multiples of $1,000 principal amount, at the option of the holder only under any of the following circumstances: (1) during any calendar quarter commencing after the calendar quarter ending on September 30, 2019 (and only during such calendar quarter), if the last reported sale price of the Company’s common stock for at least 20 trading days (whether or not consecutive) during a period of 30 consecutive trading days ending on, and including, the last trading day of the immediately preceding calendar quarter is greater than or equal to $26.6513 (130% of the conversion price) on each applicable trading day; (2) during the five business day period after any five5 consecutive trading day period (the “measurement period”) in which the “trading price” (as defined in the relevant indenture) per $1,000 principal amount of notes for each trading day of the measurement period was less than 98% of the product of the last reported sale price of the Company’s common stock and the conversion rate on each such trading day; or (3) upon the occurrence of specified corporate events. On and after December 1, 2023 until the close of business on the second scheduled trading day immediately preceding the maturity date of June 1, 2024, holders may convert their notes at any time, regardless of the foregoing circumstances. Upon the occurrence of a fundamental change (as defined in the relevant indenture), holders may require the Company to repurchase all or a portion of their Notes due 2024 for cash at a price equal to 100% of the principal amount of the notes to be repurchased plus any accrued and unpaid interest to, but excluding, the fundamental change repurchase date.
As of March 31,June 30, 2020, the sale price of the Company’s common stock was greater than or equal to $26.6513 (130% of the notes conversion price) for at least 20 trading days (whether consecutive or not) during a period of 30 consecutive trading days preceding the quarter-ended March 31,June 30, 2020. As a result, as of March 31,June 30, 2020, the Notes due 2024 becameare convertible at the holders’ option beginning on April 1, 2020 and ending Junethrough September 30, 2020. Accordingly, the Company classified the net carrying amount of the Notes due 2024 of $97.9$99.7 million as Debt, current on the condensed consolidated balance sheet as of March 31,June 30, 2020.

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ENPHASE ENERGY, INC.
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
(Unaudited)


In accounting for the issuance of the Notes due 2024, on June 5, 2019, the Company separated the Notes due 2024 into liability and equity components. The carrying amount of the liability component of approximately $95.6 million was calculated by using a discount rate of 7.75%, which was the Company’s borrowing rate on the date of the issuance of the notes for a similar debt instrument without the conversion feature. The carrying amount of the equity component of approximately $36.4 million, representing the conversion option, was determined by deducting the fair value of the liability component from the par value of the Notes due 2024. The equity component of the Notes due 2024 is included in additional paid-in capital in the condensed consolidated balance sheet and is not remeasured as long as it continues to meet the conditions for equity classification. The difference between the principal amount of the Notes due 2024 and the liability component (the “debt discount”) is amortized to interest expense using the effective interest method over the term of the Notes due 2024.
The Company separated the Notes due 2024 into liability and equity components, this resulted in a tax basis difference associated with the liability component that represents a temporary difference. The Company recognized the deferred taxes of $0.3 million for the tax effect of that temporary difference as an adjustment to the equity component included in additional paid-in capital in the condensed consolidated balance sheet.
Debt issuance costs for the issuance of the Notes due 2024 were approximately $4.6 million, consisting of initial purchasers' discount and other issuance costs. In accounting for the transaction costs, the Company allocated the total amount incurred to the liability and equity components using the same proportions as the proceeds from the Notes due 2024. Transaction costs attributable to the liability component were approximately $3.3 million, were recorded as debt issuance cost (presented as contra debt in the condensed consolidated balance sheet) and are being amortized to interest expense over the term of the Notes due 2024. The transaction costs attributable to the equity component were approximately $1.3 million and were netted with the equity component in stockholders’ equity. As of March 31,June 30, 2020 and December 31, 2019, the unamortized deferred issuance cost for the Notes due 2024 was $2.8$2.6 million and $2.9 million, respectively, on the condensed consolidated balance sheets.

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ENPHASE ENERGY, INC.
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
(Unaudited)


The following table presents the total amount of interest cost recognized relating to the Notes due 2024:
Three Months Ended
June 30,
 Six Months Ended
June 30,
Three Months Ended
March 31, 2020
2020 2019 2020 2019
(In thousands)(In thousands)
Contractual interest expense$330
$330
 $92
 $660
 $92
Amortization of debt discount1,562
1,621
 416
 3,183
 416
Amortization of debt issuance costs166
166
 45
 332
 45
Total interest cost recognized$2,058
$2,117
 $553
 $4,175
 $553

The effective interest rate on the liability component Notes due 2024 was 7.75% for the three and six months ended March 31,June 30, 2020, which remains unchanged from the date of issuance. The remaining unamortized debt discount was $31.3$29.7 million and $32.9 million as of March 31,June 30, 2020 and December 31, 2019, respectively, will be amortized over approximately 4.23.9 years from March 31,June 30, 2020.
Notes due 2024 Hedge and Warrant Transactions
In connection with the offering of the Notes due 2024, the Company entered into privately-negotiated convertible note hedge transactions pursuant to which the Company has the option to purchase a total of approximately 6.4 million shares of its common stock (subject to anti-dilution adjustments), which is the same number of shares initially issuable upon conversion of the notes, at a price of $20.5010 per share, which is the initial conversion price of the Notes due 2024. The total cost of the convertible note hedge transactions was approximately $36.3 million. The convertible note hedge transactions are expected generally to reduce potential dilution to the Company’s common stock upon any conversion of the Notes due 2024 and/or offset any cash payments the Company is required to make in excess of the principal amount of converted notes, as the case may be. As of March 31,June 30, 2020, and through the date of this quarterly report, the Company had not purchased any shares under the convertible note hedge transactions.

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ENPHASE ENERGY, INC.
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
(Unaudited)


Additionally, the Company separately entered into privately-negotiated warrant transactions (the “Warrants”) whereby the Company sold warrants to acquire approximately 6.4 million shares of the Company’s common stock (subject to anti-dilution adjustments) at an initial strike price of $25.2320 per share. The Company received aggregate proceeds of approximately $29.8 million from the sale of the Warrants. If the market value per share of the Company’s common stock, as measured under the Warrants, exceeds the strike price of the Warrants, the Warrants will have a dilutive effect on the Company’s earnings per share, unless the Company elects, subject to certain conditions, to settle the Warrants in cash. Taken together, the purchase of the convertible note hedges and the sale of the Warrants are intended to reduce potential dilution from the conversion of the Notes due 2024 and to effectively increase the overall conversion price from $20.5010 to $25.2320 per share. The Warrants are only exercisable on the applicable expiration dates in accordance with the Warrants. Subject to the other terms of the Warrants, the first expiration date applicable to the Warrants is September 1, 2024, and the final expiration date applicable to the Warrants is April 22, 2025. As of March 31,June 30, 2020, and through the report date, the Warrants had not been exercised and remained outstanding.
Given that the transactions meet certain accounting criteria, the Notes due 2024 hedge and the warrants transactions are recorded in stockholders’ equity, and they are not accounted for as derivatives and are not remeasured each reporting period.
Convertible Senior Notes due 2023
In August 2018, the Company sold $65.0 million aggregate principal amount of 4.0% convertible senior notes due 2023 (the “Notes due 2023”) in a private placement. On May 30, 2019, the Company entered into separately and privately negotiated transactions with certain holders of the Notes due 2023 resulting in the repurchase and exchange, as of June 5, 2019, of $60.0 million aggregate principal amount of the notes in consideration for the issuance of 10,801,080 shares of common stock and separate cash payments totaling $6.0 million. As of both March 31,June 30, 2020 and December 31, 2019, $5.0 million aggregate principal amount of the Notes due 2023 remain outstanding.

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The remaining outstanding Notes due 2023 are general unsecured obligations and bear interest at a rate of 4.0% per year, payable semi-annually on February 1 and August 1 of each year. The Notes due 2023 are governed by an indenture between the Company and U.S. Bank National Association, as trustee. The remaining outstanding Notes due 2023 will mature on August 1, 2023, unless earlier repurchased by the Company or converted at the option of the holders. The Company may not redeem the remaining Notes due 2023 prior to the maturity date, and no sinking fund is provided for such notes. The remaining Notes due 2023 are convertible, at a holder’s election, in multiples of $1,000 principal amount, into shares of the Company’s common stock based on the applicable conversion rate. The initial conversion rate for such notes is 180.0180 shares of common stock per $1,000 principal amount of notes (which is equivalent to an initial conversion price of approximately $5.56 per share). The conversion rate and the corresponding conversion price are subject to adjustment upon the occurrence of certain events but will not be adjusted for any accrued and unpaid interest. Holders of the remaining Notes due 2023 who convert their notes in connection with a make-whole fundamental change (as defined in the applicable indenture) are, under certain circumstances, entitled to an increase in the conversion rate. Additionally, in the event of a fundamental change, holders of the remaining Notes due 2023 may require the Company to repurchase all or a portion of their notes at a price equal to 100% of the principal amount of notes, plus any accrued and unpaid interest, including any additional interest to, but excluding, the repurchase date. Holders may convert all or any portion of their Notes due 2023 at their option at any time prior to the close of business on the business day immediately preceding the maturity date, in multiples of $1,000 principal amount.
The following table presents the amount of interest cost recognized relating to the contractual interest coupon and the amortization of debt issuance costs of the Notes due 2023.
Three Months Ended
March 31,
Three Months Ended
June 30,
 Six Months Ended
June 30,
2020 20192020 2019 2020 2019
(In thousands)(In thousands)
Contractual interest expense$50
 $650
$50
 $483
 $100
 $1,133
Amortization of debt issuance costs10
 129
10
 96
 20
 225
Total interest costs recognized$60
 $779
$60
 $579
 $120
 $1,358


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ENPHASE ENERGY, INC.
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
(Unaudited)


Sale of Long-Term Financing Receivables
The Company entered into an agreement with a third party in the fourth quarter of 2017 to sell certain current and future receivables at a discount. In December 2017, the third party made an initial purchase of receivables that resulted in net proceeds to the Company of $2.8 million. This transaction was recorded as debt on the accompanying consolidated balance sheets, and the debt balance was relieved in January 2019 as the underlying receivables were settled. During the year ended December 31, 2018, the third party made three additional purchases of receivables that resulted in total net proceeds to the Company of $5.6 million. These transactions were recorded as debt on the accompanying condensed consolidated balance sheets, and the total associated debt balance will be relieved by September 2021 as the underlying receivables are settled.
9.COMMITMENTS AND CONTINGENT LIABILITIESCONTINGENCIES
Operating Leases
The Company leases office facilities under noncancelable operating leases that expire on various dates through 2028, some of which may include options to extend the leases for up to 12 years.
The components of lease expense are presented as follows:
 Three Months Ended
March 31,
 2020 2019
 (In thousands)
Operating lease costs$1,222
 $499
The components of lease liabilities are presented as follows:
 March 31,
2020
 December 31,
2019
 (In thousands)
Operating lease liabilities, current (Accrued liabilities)$3,511
 $3,170
Operating lease liabilities, noncurrent (Other liabilities)10,972
 9,542
Total operating lease liabilities$14,483
 $12,712
    
Supplemental lease information:   
Weighted average remaining lease term5.6 years 5.5 years
Weighted average discount rate8.3% 8.6%

Supplemental cash flow and other information related to operating leases, are as follows:
 Three Months Ended
March 31,
 2020 2019
 (In thousands)
Cash paid for amounts included in the measurement of lease liabilities:   
Operating cash flows from operating leases$1,014
 $737
    
Non-cash investing activities:   
Lease liabilities arising from obtaining right-of-use assets$2,941
 $

 Three Months Ended
June 30,
 Six Months Ended
June 30,
 2020 2019 2020 2019
 (In thousands)
Operating lease costs$1,280
 $564
 $2,502
 $1,063

 
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ENPHASE ENERGY, INC.
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
(Unaudited)


The components of lease liabilities are presented as follows:
 June 30,
2020
 December 31,
2019
 (In thousands)
Operating lease liabilities, current (Accrued liabilities)$3,570
 $3,170
Operating lease liabilities, noncurrent (Other liabilities)10,202
 9,542
Total operating lease liabilities$13,772
 $12,712
    
Supplemental lease information:   
Weighted average remaining lease term5.4 years 5.5 years
Weighted average discount rate8.3% 8.6%

Supplemental cash flow and other information related to operating leases, are as follows:
 Three Months Ended
June 30,
 Six Months Ended
June 30,
 2020 2019 2020 2019
 (In thousands)
Cash paid for amounts included in the measurement of lease liabilities:       
Operating cash flows from operating leases$1,145
 $857
 $2,159
 $1,594
        
Non-cash investing activities:       
Lease liabilities arising from obtaining right-of-use assets$
 $4,834
 $2,941
 $4,834

Undiscounted cash flows of operating lease liabilities as of March 31,June 30, 2020 are as follows:
Lease AmountsLease Amounts
(In thousands)(In thousands)
Year:  
2020 (remaining nine months)$3,432
2020 (remaining six months)$2,307
20214,651
4,679
20223,337
3,365
20232,619
2,648
20241,415
1,445
2025 and thereafter1,902
1,949
Total lease payments17,356
16,393
Less: imputed lease interest(2,873)(2,621)
Total lease liabilities$14,483
$13,772

Purchase Obligations
The Company has contractual obligations related to component inventory that its primary contract manufacturer procures on its behalf in accordance with its production forecast as well as other inventory related purchase commitments. As of March 31,June 30, 2020, these purchase obligations totaled approximately $95.6$75.2 million.
Letter of Credits
As of both March 31, 2020 and December 31, 2019, theThe Company had a standby letter of credit in the aggregate amount of $44.7 million, primarily in connection with one of its customer contracts. The letter of credit served as a performance security for product delivered to the customer during the three months ended March 31, 2020 and expired on April 30, 2020. The Company had collateralized under the letter of credit a certificate of deposit of $44.7 million. NaN amounts have been drawn against this letter of credit.
Litigation
From time-to-time, the Company may be involved in litigation relating to claims arising out of its operations. The Company is not currently involved in any material legal proceedings; however, the Company may be involved in material legal proceedings in the future. Such matters are subject to uncertainty and there can be no assurance that such legal proceedings will not have a material effect on its business, results of operations, financial position or cash flows.
10.STOCK-BASED COMPENSATION

 
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ENPHASE ENERGY, INC.
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
(Unaudited)


customer in the first quarter of 2020 and expired on April 30, 2020. NaN amounts were drawn against this letter of credit. As of June 30, 2020, the Company has no letter of credit outstanding.
Litigation
The Company is subject to various legal proceedings relating to claims arising out of its operations that have not been fully resolved. The outcome of litigation is inherently uncertain. If one or more legal matters were resolved against the Company in a reporting period for amounts above management’s expectations, the Company’s business, results of operations, financial position and cash flows for that reporting period could be materially adversely affected. As of August 4, 2020, the Company is not currently a party to any matters that the management expects will have an adverse material effect on the Company’s consolidated financial position, results of operations or cash flows.
Contingencies
Since late September 2018, the Company has paid tariffs imposed on its microinverters by the China Section 301 Tariff Actions (“Section 301 Tariffs”) taken by the Office of the United States Trade Representative (the “USTR”). The Company has sought refunds on tariffs previously paid on certain microinverter products that fit the dimensions and weight limits within a Section 301 Tariff exclusion under U.S. note 20(ss)(40) to subchapter III of chapter 99 of the Harmonized Tariff Schedule of the United States (the “Tariff Exclusion”). There is no material impact on the Company’s condensed consolidated statements of operations for the three and six months ended June 30, 2020. The Company expects there will be a material positive impact on the Company’s financial statements if all of the requested refunds are approved in the future, totaling approximately $39 million plus accrued interest. The Tariff Exclusion expires on August 7, 2020, and the Company has filed a comment with the USTR supporting an extension of the Tariff Exclusion. The Company continues to pay Section 301 Tariffs on its storage and communication products and other accessories imported from China which are not subject to the Tariff Exclusion.
10.STOCK-BASED COMPENSATION
Stock-based Compensation Expense
Stock-based compensation expense for all stock-based awards expected to vest is measured at fair value on the date of grant and recognized ratably over the requisite service period. The following table summarizes the components of total stock-based compensation expense included in the condensed consolidated statements of operations for the periods presented.
Three Months Ended
March 31,
Three Months Ended
June 30,
 Six Months Ended
June 30,
2020 20192020 2019 2020 2019
(In thousands)(In thousands)
Cost of revenues$606
 $231
$1,337
 $386
 $1,943
 $617
Research and development1,919
 716
3,263
 1,128
 5,182
 1,844
Sales and marketing1,942
 999
3,610
 1,360
 5,552
 2,359
General and administrative3,048
 1,288
4,090
 1,729
 7,138
 3,017
Restructuring
 55

 332
 
 387
Total$7,515
 $3,289
$12,300
 $4,935
 $19,815
 $8,224

The following table summarizes the various types of stock-based compensation expense for the periods presented.
Three Months Ended
March 31,
Three Months Ended
June 30,
 Six Months Ended
June 30,
2020 20192020 2019 2020 2019
(In thousands)(In thousands)
Stock options, RSUs, and PSUs$7,077
 $3,222
$11,557
 $4,760
 $18,634
 $7,982
Employee stock purchase plan438
 67
743
 175
 1,181
 242
Total$7,515
 $3,289
$12,300
 $4,935
 $19,815
 $8,224


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ENPHASE ENERGY, INC.
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
(Unaudited)


As of March 31,June 30, 2020, there was approximately $40.6$76.9 million of total unrecognized stock-based compensation expense related to unvested equity awards, which are expected to be recognized over a weighted-average period of 2.82.1 years.
Valuation of Equity Awards
Stock Options
The fair value of each option granted was estimated on the date of grant using the Black-Scholes option-pricing model. NaNmodel with the following assumptions:
Expected term—The expected term of the option awards represents the period of time between the grant date of the option awards and the date the option awards are either exercised, converted or canceled, including an estimate for those option awards still outstanding. The Company used the simplified method, as permitted by the SEC for companies with a limited history of stock option exercise activity, to determine the expected term for its option grants.
Expected volatility—The expected volatility was calculated based on the Company’s historical stock prices, supplemented as necessary with historical volatility of the common stock of several peer companies with characteristics similar to those of the Company.
Risk-free interest rate—The risk-free interest rate was based on the U.S. Treasury yield curve in effect at the time of grant and with a maturity that approximated the Company’s expected term.
Dividend yield—The dividend yield was based on the Company’s dividend history and the anticipated dividend payout over its expected term.
The following table presents the weighted-average grant date fair value of options were granted duringfor the three months ended March 31, 2020periods presented and 2019.the assumptions used to estimate those values using a Black-Scholes option pricing model.
 Three Months Ended
June 30,
 Six Months Ended
June 30,
 2020 2019 2020 2019
Weighted average grant date fair value$38.45
 $9.16
 $38.45
 $9.16
Expected term (in years)3.8
 3.8
 3.8
 3.8
Expected volatility86.4% 89.1% 86.4% 89.1%
Annual risk-free rate of return0.1% 2.1% 0.1% 2.1%
Dividend yield% % % %

Restricted Stock Units
The fair value of the Company’s restricted stock units (“RSU”) awards granted is based upon the closing price of the Company’s stock price on the date of grant.
Performance Stock Units
The fair value of the Company’s non-market performance stock units (“PSU”) awards granted was based upon the closing price of the Company’s stock price on the date of grant. The fair value of awards of the Company’s PSU awards containing market conditions was determined using a Monte Carlo simulation model based upon the terms of the conditions, the expected volatility of the underlying security, and other relevant factors.


 
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ENPHASE ENERGY, INC.
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
(Unaudited)


Equity Awards Activity
Stock Options
The following is a summary of stock option activity.
Number of
Shares
Outstanding
 Weighted-
Average
Exercise Price
per Share
 Weighted-
Average
Remaining
Contractual
Term
 
Aggregate
Intrinsic
Value
(1)
Number of
Shares
Outstanding
 Weighted-
Average
Exercise Price
per Share
 Weighted-
Average
Remaining
Contractual
Term
 
Aggregate
Intrinsic
Value
(1)
(In thousands)   (Years) (In thousands)(In thousands)   (Years) (In thousands)
Outstanding at December 31, 20194,097
 $2.18
  4,097
 $2.18
  
Granted
 
  11
 64.17
  
Exercised(541) 2.58
 $28,263
(968) 2.08
 $50,611
Canceled(73) 7.44
  (75) 7.34
  
Outstanding at March 31, 20203,483
 $2.01
 4.2 $105,469
Vested and expected to vest at March 31, 20203,483
 $2.01
 4.2 $105,469
Exercisable at March 31, 20202,518
 $2.22
 4.1 $75,706
Outstanding at June 30, 20203,065
 $2.30
 4.0 $138,877
Vested and expected to vest at June 30, 20203,065
 $2.30
 3.0 $138,877
Exercisable at June 30, 20202,270
 $2.37
 3.9 $102,649
  
(1)The intrinsic value of options exercised is based upon the value of the Company’s stock at exercise. The intrinsic value of options outstanding, vested and expected to vest, and exercisable as of March 31,June 30, 2020 is based on the closing price of the Company’s stock fair value on March 31,June 30, 2020 or the earlier of the last trading day prior to March 31,June 30, 2020, if March 31,June 30, 2020 is a non-trading day. The Company’s stock fair value used in this computation was $32.29$47.57 per share.
The following table summarizes information about stock options outstanding at March 31,June 30, 2020.
 Options Outstanding Options Exercisable Options Outstanding Options Exercisable
Range of Exercise Prices Number of
Shares
 Weighted-
Average
Remaining
Life
 Weighted-
Average
Exercise
Price
 Number of
Shares
 Weighted-
Average
Exercise
Price
 Number of
Shares
 Weighted-
Average
Remaining
Life
 Weighted-
Average
Exercise
Price
 Number of
Shares
 Weighted-
Average
Exercise
Price
 (In thousands) (Years)   (In thousands)   (In thousands) (Years)   (In thousands)  
$0.70 —– $1.11 751
 4.8 $0.82
 565
 $0.80
 706
 4.6 $0.82
 546
 $0.80
$1.29 —– $1.29 1,000
 4.5 1.29
 625
 1.29
 1,000
 4.2 1.29
 687
 1.29
$1.31 —– $1.31 1,037
 4.0 1.31
 765
 1.31
 709
 3.8 1.31
 500
 1.31
$1.37 —– $12.57 653
 3.3 4.78
 527
 5.34
$14.58 —– $14.58 42
 6.1 14.58
 36
 14.58
$1.37 —– $14.58 639
 3.2 5.60
 536
 6.22
$64.17 —– $64.17 11
 6.9 64.17
 1
 64.17
Total 3,483
 4.2 $2.01
 2,518
 $2.22
 3,065
 4.0 $2.30
 2,270
 $2.37


 
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ENPHASE ENERGY, INC.
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
(Unaudited)


Restricted Stock Units
The following is a summary of RSU activity.
Number of
Shares
Outstanding
 Weighted-
Average
Fair Value
per Share at
Grant Date
 Weighted-
Average
Remaining
Contractual
Term
 
Aggregate
Intrinsic
Value
(1)
Number of
Shares
Outstanding
 Weighted-
Average
Fair Value
per Share at
Grant Date
 Weighted-
Average
Remaining
Contractual
Term
 
Aggregate
Intrinsic
Value
(1)
(In thousands)   (Years) (In thousands)(In thousands)   (Years) (In thousands)
Outstanding at December 31, 20194,263
 $7.19
  4,263
 $7.19
  
Granted552
 31.34
  1,077
 36.62
  
Vested(951) 6.13
 $34,095
(1,380) 6.60
 $55,925
Canceled(34) 16.92
  (66) 16.15
  
Outstanding at March 31, 20203,830
 $10.85
 1.3 $123,672
Expected to vest at March 31, 20203,830
 $10.63
 1.3 $114,306
Outstanding at June 30, 20203,894
 $15.39
 1.24 $185,236
Expected to vest at June 30, 20203,894
 $15.39
 1.24 $185,236
  
(1)The intrinsic value of RSUs vested is based upon the value of the Company’s stock when vested. The intrinsic value of RSUs outstanding and expected to vest as of March 31,June 30, 2020 is based on the closing price of the Company’s stock on March 31,June 30, 2020 or the earlier of the last trading day prior to March 31,June 30, 2020, if March 31,June 30, 2020 is a non-trading day. The Company’s stock fair value used in this computation was $32.29$47.57 per share.
Performance Stock Units
The following is a summary of PSU activity.
Number of
Shares
Outstanding
 Weighted-
Average
Fair Value
per Share at
Grant Date
 Weighted-
Average
Remaining
Contractual
Term
 
Aggregate
Intrinsic
Value
(1)
Number of
Shares
Outstanding
 Weighted-
Average
Fair Value
per Share at
Grant Date
 Weighted-
Average
Remaining
Contractual
Term
 
Aggregate
Intrinsic
Value
(1)
(In thousands)   (Years) (In thousands)(In thousands)   (Years) (In thousands)
Outstanding at December 31, 2019955
 $9.83
  955
 $9.83
  
Granted482
 11.52
  974
 30.45
  
Vested(1,410) 10.41
 $50,938
(1,450) 10.20
 $52,144
Canceled
 
  
 
  
Outstanding at March 31, 202027
 $4.40
 0 $872
Outstanding at June 30, 2020479
 $50.37
 0.7 $22,777
  
(1)The intrinsic value of PSUs vested is based upon the value of the Company’s stock when vested. The intrinsic value of PSUs outstanding and expected to vest as of March 31,June 30, 2020 is based on the closing price of the Company’s stock on March 31,June 30, 2020 or the earlier of the last trading day prior to March 31,June 30, 2020, if March 31,June 30, 2020 is a non-trading day. The Company’s stock fair value used in this computation was $32.29$47.57 per share.
11.
INCOME TAXES
For the three and six months ended March 31,June 30, 2020, the Company’s income tax benefit of $11.9$6.6 million and $18.4 million, respectively, on a net loss before income taxes of $53.9 million and on a net income before income taxes of $57.1$3.2 million, respectively, calculated using the annualized effective tax rate method, was primarily due to tax deduction from employee stock compensation as a discrete event, in the three months ended March 31, 2020, partially offset by projected tax expense in the United States (U.S.)U.S. and foreign jurisdictions that are profitable. For the three and six months ended March 31,June 30, 2019, the Company’s income tax provision of $0.3$0.6 million and $0.9 million, respectively, on income before income taxes of $3.1$11.2 million and $14.3 million, respectively, calculated using the discrete tax approach, was primarily related to income taxes attributable to its foreign operations.
For the three and six months ended March 31,June 30, 2020, in accordance with FASB guidance for interim reporting of income tax, the Company has computed its provision for income taxes based on a projected annual effective tax rate while excluding loss jurisdictions which cannot be benefited.

 
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ENPHASE ENERGY, INC.
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
(Unaudited)



The Company used the discrete tax approach in calculating the tax expense for the three and six months ended March 31,June 30, 2019 due to the fact that a relatively small change in the Company’s projected pre-tax net income (loss) could result in a volatile effective tax rate. Under the discrete method, the Company determines its tax (expense) benefit based upon actual results as if the interim period was an annual period. The tax provision recorded was primarily related to income taxes attributable to its foreign operations.
12.NET INCOME (LOSS) PER SHARE
Basic net income (loss) per share is computed by dividing net income (loss) by the weighted average number of shares of common stock outstanding during the period. Diluted net income (loss) per share is computed in a similar manner, but it also includes the effect of potential common shares outstanding during the period, when dilutive. Potential common shares include Stock Options, RSUs, PSUs, shares to be purchased under the Company’s ESPP, the Notes due 2023, the Notes due 2024, and warrantsWarrants issued in conjunction with the Notes due 2024. Until2024, and from May 20, 2020 to the Company’s authorized sharesend of common stock increases to satisfy the share reservation condition,reporting period, the Notes due 2025 and warrantsWarrants issued in conjunction with the Notes due 2025 must be settled in cash, and therefore excluded from shares used in diluted per share amounts.2025. See Note 8. “Debt” for additional information.
The dilutive effect of potentially dilutive common shares is reflected in diluted earnings per share by application of the treasury stock method for stock options, RSUs, PSUs, Notes due 2024, warrants issued in conjunction with the Notes due 2024, Notes due 2025, warrants issued in conjunction with the Notes due 2025 and shares to be purchased under the ESPP, and by application of the if-converted method for the Notes due 2023. To the extent these potential common shares are antidilutive, they are excluded from the calculation of diluted net income (loss) per share.

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ENPHASE ENERGY, INC.
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
(Unaudited)


The following table presents the computation of basic and diluted net income (loss) per share for the periods presented.
Three Months Ended
March 31,
Three Months Ended
June 30,
 Six Months Ended
June 30,
2020 20192020 2019 2020 2019
(In thousands, except per share data)(In thousands, except per share data)
Numerator:          
Net income$68,936
 $2,765
Net income (loss)$(47,294) $10,618
 $21,642
 $13,383
Notes due 2023 interest and financing costs, net44
 

 430
 89
 1,006
Adjusted net income$68,980
 $2,765
Adjusted net income (loss)$(47,294) $11,048
 $21,731
 $14,389
          
Denominator:          
Shares used in basic per share amounts:          
Weighted average common shares outstanding123,531
 108,195
125,603
 113,677
 124,567
 110,951
          
Shares used in diluted per share amounts:          
Weighted average common shares outstanding123,531
 108,195
125,603
 113,677
 124,567
 110,951
Effect of dilutive securities:          
Employee stock-based awards8,609
 7,668

 8,326
 7,449
 8,240
Warrants (issued in conjunction with Notes due 2024)2,128
 

 
 2,641
 
Notes due 20242,936
 

 
 3,353
 
Notes due 2023900
 

 8,734
 900
 10,209
Weighted average common shares outstanding for diluted calculation138,104
 115,863
125,603
 130,737
 138,910
 129,400
          
Basic and diluted net income per share   
Net income per share, basic$0.56
 $0.03
Basic and diluted net income (loss) per share       
Net income (loss) per share, basic$(0.38) $0.09
 $0.17
 $0.12
Net income per share, diluted$0.50
 $0.02
$(0.38) $0.08
 $0.16
 $0.11

The following outstanding shares of common stock equivalents were excluded from the calculation of the diluted net income per share attributable to common stockholders because their effect would have been antidilutive.
 Three Months Ended
March 31,
 2020 2019
 (In thousands)
Employee stock options
 112
RSUs and PSUs
 91
Notes due 2023
 11,701
Total
 11,904

Diluted earnings per share for the three months ended March 31, 2020 and 2019 includes the dilutive effect of stock options, RSUs, PSUs, and shares to be purchased under the ESPP, the Notes due 2023, the Notes due 2024 and warrants issued in conjunction with the Notes due 2024. For the three months ended March 31, 2020, no shares were antidilutive and excluded from diluted earnings per share. For the three months ended March 31, 2019, certain common stock issuable under stock options, RSUs, PSUs and Notes due 2023 have been omitted from the diluted net income per share calculation because including such shares would have been antidilutive.

 
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ENPHASE ENERGY, INC.
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
(Unaudited)


The following outstanding shares of common stock equivalents were excluded from the calculation of the diluted net income (loss) per share attributable to common stockholders because their effect would have been antidilutive.
 Three Months Ended
June 30,
 Six Months Ended
June 30,
 2020 2019 2020 2019
 (In thousands)
Employee stock-based awards6,459
 66
 294
 77
Warrants (issued in conjunction with Notes due 2024)3,039
 
 
 
Notes due 20243,677
 
 
 
Warrants (issued in conjunction with Notes due 2025)3,924
 
 3,430
 
Notes due 20252,771
 
 2,031
 
Notes due 2023900
 
 
 
Total20,770
 66
 5,755
 77

The Company had a net loss for the three months ended June 30, 2020, hence all common stock issuable under stock options, RSUs, PSUs, and shares to be purchased under the ESPP, the Notes due 2023, the Notes due 2024 and, warrants issued in conjunction with the Notes due 2024, Notes due 2025 and warrants issued in conjunction with the Notes due 2025 were excluded because including such shares would have been antidilutive. Diluted earnings per share for the six months ended June 30, 2020 includes the dilutive effect of stock options, RSUs, PSUs, and shares to be purchased under the ESPP, the Notes due 2023, the Notes due 2024 and warrants issued in conjunction with the Notes due 2024. Certain common stock issuable under stock options, RSUs, PSUs, Notes due 2025 and warrants issued in conjunction with the Notes due 2025 have been omitted from the diluted net income per share calculation because including such shares would have been antidilutive.
Diluted earnings per share for the three and six months ended June 30, 2019 includes the dilutive effect of stock options, RSUs, PSUs, and shares to be purchased under the ESPP and the Notes due 2023. Certain common stock issuable under stock options, RSUs and PSUs have been omitted from the diluted net income per share calculation because including such shares would have been antidilutive.
Since the Company has the intent and ability to settle the aggregate principal amount of the Notes due 2024 and Notes due 2025 in cash and any excess in shares of the Company’s common stock, the Company uses the treasury stock method for calculating any potential dilutive effect of the conversion spread on diluted net income per share, if applicable. In order to compute the dilutive effect, the number of shares included in the denominator of diluted net income per share is determined by dividing the conversion spread value of the “in-the-money” Notes due 2024 and Notes due 2025 by the Company’s average share price during the period and including the resulting share amount in the diluted net income per share denominator. The conversion spread will have a dilutive impact on net income per share of common stock when the average market price of the Company’s common stock for a given period exceeds the conversion price of $20.5010$20.50 per share and $81.54 per share for the Notes due 2024. The Company’s weighted average common stock price since the issuance of the2024 and Notes due 2024 was above the conversion price, resulting in an impact on the diluted net income per share.2025, respectively.
13.RELATED PARTY
In 2018, a member of the Company’s board of directors and one of its principal stockholders, Thurman John Rodgers, purchased $5.0 million aggregate principal amount of the Notes due 2023 in a concurrent private placement. As of both March 31,June 30, 2020 and December 31, 2019, $5.0 million aggregate principal amount of the Notes due 2023 were outstanding. See Note 8. “Debt” for additional information related to this purchase.

 
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Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations
Forward-Looking Statements
The following discussion and analysis of our financial condition and results of operations should be read together with our consolidated financial statements and related notes appearing elsewhere in this Quarterly Report on Form 10-Q. This discussion contains forward-looking statements reflecting our current expectations and involves risks and uncertainties. In some cases, you can identify forward-looking statements by terminology such as “may,” “will,” “should,” “expect,” “plan,” “anticipate,” “believe,” “estimate,” “predict,” “intend,” “potential” or “continue” or the negative of these terms or other comparable terminology. Such statements, include but are not limited to statements regarding our expectations as to the impact of the COVID-19 pandemic, future financial performance, expense levels, liquidity sources, the capabilities and performance of our technology and products and planned changes, timing of new product releases, our business strategies, including anticipated trends, growth and developments in markets in which we target, the anticipated market adoption of our current and future products, performance in operations, including component supply management, product quality and customer service, impact of current litigation on our business, results of operation, financial position or cash flows, and the anticipated benefits and risks relating to the transaction with SunPower Corporation. Our actual results and the timing of events may differ materially from those discussed in our forward-looking statements as a result of various factors, including those discussed below and those discussed in the section entitled “Risk Factors” included in this Quarterly Report on Form 10-Q and our Annual Report on Form 10-K for the fiscal year ended December 31, 2019.
Overview
We are a global energy technology company. We deliver smart, easy-to-use solutions that manage solar generation, storage and communication on one intelligent platform. We revolutionized the solar industry with our microinverter technology and we produce a fully integrated solar-plus-storage solution. We have shipped more than 2728 million microinverters, and over 1.11.2 million Enphase residential and commercial systems have been deployed in more than 130 countries.
We sell our solutions primarily to distributors who resell them to solar installers. We also sell directly to large installers, OEMs, strategic partners and homeowners. Our revenue forin the three months ended March 31,first quarter of 2020 was positively impacted by the scheduled phase-down of the investment tax credit for solar projects under Section 48(a) (the “ITC”) of the Internal Revenue Code of 1986, as amended (the “Code”). The historical ITC percentage has decreased from 30% to 26% of the basis of a solar energy system that began construction during 2020, 22% for 2021, and zero for residential and 10% for commercial if construction begins after 2021 or if the solar energy system is placed into service after 2023. As a result, several of our customers explored opportunities to purchase products in 2019 to take advantage of safe harbor guidance from the IRS published in June 2018, allowing them to preserve the historical 30% investment tax credit for solar equipment purchased in 2019 for solar projects that are completed after December 31, 2019. Safe harbor prepayments from customers in the fourth quarter of 2019 resulted in $44.5 million of revenue recognized in the three months ended March 31,first quarter of 2020 when we delivered the product.
On March 9, 2020, we issued $320.0 million aggregate principal amount of our Convertible Senior Notes due 2025 (the “Notes due 2025”) in a private placement. The Notes due 2025 are general unsecured obligations and bear interest at a rate of 0.25% per year, payable semi-annually on March 1 and September 1 of each year, beginning on September 1, 2020. The Notes due 2025 will mature on March 1, 2025, unless earlier repurchased by us or converted at the option of the holders. Further information relating to the Notes due 2025 may be found in Note 8, “Debt,” of the notes to condensed consolidated financial statements included in Part I, Item 1 of this Form 10-Q and below under “Liquidity and Capital Resources.”
Since late September 2018, we have paid tariffs imposed on the microinverters by the China Section 301 Tariff Actions (“Section 301 Tariffs”) taken by the Office of the United States Trade Representative (the “USTR”). We have sought refunds on tariffs previously paid on certain microinverter products that fit the dimensions and weight limits within a Section 301 Tariff exclusion under U.S. note 20(ss)(40) to subchapter III of chapter 99 of the Harmonized Tariff Schedule of the United States (the “Tariff Exclusion”).  There is no material impact on our condensed consolidated statements of operations for the three and six months ended June 30, 2020. We expect there will be a positive material impact on our financial statements if all of the requested refunds are approved in the future, totaling approximately $39 million plus accrued interest. The Tariff Exclusion expires on August 7, 2020, and we have filed a comment with the USTR supporting an extension of the Tariff Exclusion. We continue to pay Section 301 Tariffs on our storage and communication products and other accessories imported from China which are not subject to the Tariff Exclusion.

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Impact of COVID-19
In March 2020, the outbreak ofThe ongoing worldwide COVID-19 caused by a novel strain of the coronavirus was recognized as a pandemic by the World Health Organization,(“COVID-19”) continues to spread globally and the outbreak has become increasingly widespread globally,cause disruptions and uncertainties, including in the core markets in which we operate. The COVID-19 outbreakpandemic has significantly curtailed the movement of people, goods and services and had a notable impact on general economic conditions, including but not limited to the temporary closures of many businesses, “shelter in place” orders and other governmental regulations, and reduced consumer spending. The most significant near-term impacts of COVID-19 on our financial performance are a decline in sales orders as future residential and commercial system owners are canceling sales meetings with system installation professionals or postponing system installations. As the purchase of new solar energy management solutions declines as part of COVID-19’s impactsthe impact of COVID-19 on consumer spending, many businesses through which we distribute our products are working at limited operational capacity. The extent of the impact of

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COVID-19 on our future operational and financial performance will depend on various future developments, including the duration and spread of the outbreak, impact on our employees, impact on our customers, effect on our sales cycles or costs, and effect on our supply chain and vendors, all of which are uncertain and cannot be predicted, but which could have a material adverse effect on our business, results of operations or financial condition. Further information relating to the risks and uncertainties related to the ongoing COVID-19 pandemic may be found in Part II, Item 1A “Risk Factors” of this Form 10-Q, as well as in the “Risk Factors” section in our 2019 Annual Report on Form 10-K that could be heightened due to duration and spread, among other impacts of the pandemic.
Products
We design, develop, manufacture and sell home energy solutions that manage energy generation, energy storage and control and communications on one intelligent platform. We have revolutionized the solar industry by bringing a systems approach to solar technology and by pioneering a semiconductor-based microinverter that converts energy at the individual solar module level and, combined with our proprietary networking and software technologies, provides advanced energy monitoring and control. This is vastly different than a central inverter system using string modules, with or without an optimizer, approach that only converts energy of the entire array of solar modules from a single high voltage electrical unit and lacks intelligence about the energy producing capacity of the solar array.
The Enphase Home Energy Solution with IQ™ platform enables self-consumption and delivers our core value proposition of yielding more energy, simplifying design and installation, and improving system uptime and reliability. The IQ™ family of microinverters, like all of our previous microinverters, is fully compliant with NEC 2014 and 2017 rapid shutdown requirements. Unlike string inverters, this capability is built-in, with no additional equipment necessary.
Our integrated approach to energy management helps to facilitate ease of installation and optimizing a home’s energy usage. Enphase’s Always-On connected system also provides advanced monitoring and remote maintenance capabilities. The Enphase Home Energy Solution with IQ uses a single technology platform for seamless management of the whole solution, enabling rapid commissioning with the Installer Toolkit™; consumption monitoring with our Enphase Combiner 3C™ that includes the Envoy™ Communications Gateway, Enphase Enlighten™, a cloud-based energy management platform, Enphase IQ Combiner 3C™, designed to provide an uninterrupted connectivity to Enphase Enlighten, and our Enphase AC Battery™. System owners can use Enphase Enlighten to monitor their home’s solar generation, energy storage and consumption from any web-enabled device. Unlike some of our competitors, who utilize a traditional inverter, or offer separate components of solutions, we have built-in system redundancy in both PVphotovoltaic (“PV”) generation and energy storage, eliminating the risk that comes with a single-point of failure. Further, the nature of our cloud-based, monitored system allows for remote firmware and software updates, enabling cost-effective remote maintenance and ongoing utility compliance.
The Enphase IQ 7™ microinverter and Enphase IQ 7+™ microinverter, part of our seventh-generation IQ™ product family, support high-powered 60-cell and 72-cell solar modules and integrate with alternating current (“AC”) modules. Our IQ 7X™ product addresses 96-cell photovoltaic (“PV”)PV modules up to 400W direct current (“DC”) and with its 97.5 percent California Energy Commission (“CEC”) efficiency rating, is ideal for integration into high power modules. Our IQ 7A™ microinverters are for solar modules up to 450 W, targeting high-power residential and commercial applications. Our customers should be able to pair the IQ 7A microinverter with monofacial or bifacial solar modules, up to 450 W, from solar module manufacturers who are expected to introduce high-power variants of their products in the next three years.
AC Module (ACM) products are integrated systems which allow installers to be more competitive through improved logistics, reduced installation times, faster inspection and training. We continued to make steady progress during Q1’20the second quarter of 2020 with our AC moduleACM partners, including SunPower, Panasonic Corporation of North America,

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LONGi Solar, and Solaria Corporation.
Our next-generation We announced a strategic partnership with Hanwha Q CELLS in the second quarter of 2020 to develop Enphase Energized™ Q CELLS ACM products based on seventh-generation Enphase IQ 8™ system ismicroinverters. The first Enphase Energized Q CELLS ACM products are now available from major distributors in the U.S. We announced in July 2020 a strategic partnership with SunPower to produce the new Enphase Energized™ Maxeon ACM, based uponon our Always Onseventh-generation Enphase Ensemble™ energy management technology. This system has five components: 1) energy generation, which is accomplished withIQ microinverters. The ACM will be commercialized by Maxeon Solar Technologies, the grid-agnostic microinverter IQ 8; 2) energy storage, which is achieved byplanned spin-off from SunPower, and will be available to residential customers in key international markets through authorized installer networks and distributors starting in the Encharge™ battery with capacitiesfourth quarter of 3.4 kWh and 10.1 kWh; 3) microgrid interconnect device (MID); 4) communication and control via the combiner box with the Envoy gateway; and 5) Enlighten, which is the internet of things, or IoT, cloud software.2020.
Our next-generation battery in North America is Enphase Encharge 3™ or Encharge 10™ storage systems, with usable and scalable capacity of 3.4 kWh and 10.1 kWh, respectively. Enphase Encharge™ storage systems feature Enphase embedded grid-forming microinverters that enable the Always-On capability that keeps homes powered when the grid goes down, and the ability to save money when the grid is up. These systems are compatible with both new and existing Enphase IQ solar systems with IQ 6™ or IQ 7™ microinverters and provide a simple upgrade path for our existing solar customers. We started shipping Enphase Encharge products in the second quarter of 2020.
Our next-generation IQ 8™ system is based upon our Always On Enphase Ensemble™ energy management technology. This system has five components: 1) energy generation, which is accomplished with the grid-agnostic microinverter IQ 8; 2) energy storage, which is achieved by the Encharge™ battery with capacities of 3.4 kWh and 10.1 kWh; 3) Enpower™ smart switch, which includes a microgrid interconnect device (MID); 4) communication and control via the combiner box with the Envoy gateway; and 5) Enlighten, which is the internet of things, or IoT, cloud software.
Results of Operations
Net Revenues 
 Three Months Ended
June 30,
 Change in Six Months Ended
June 30,
 Change in
 2020 2019 $ % 2020 2019 $ %
 (In thousands, except percentages)
Net revenues$125,538
 $134,094
 $(8,556) (6)% $331,083
 $234,244
 $96,839
 41%
Three months ended June 30, 2020 and 2019
Net revenues decreased by 6% or $8.6 million for the three months ended June 30, 2020, as compared to the same period in 2019, primarily due to the 15% decrease in microinverter unit volume shipped as a result of a decline in sales orders during the COVID-19 pandemic. We sold approximately 1,088 thousand microinverter units in the three months ended June 30, 2020, as compared to approximately 1,284 thousand units in the same period in 2019.
Six months ended June 30, 2020 and 2019
Net revenues increased by 41% or $96.8 million for the six months ended June 30, 2020, as compared to the same period in 2019, primarily due to the 37% increase in microinverter unit volume shipped primarily as a result of business growth in the U.S. as well as higher units shipped in the first quarter of 2020 as our customers took advantage of safe harbor guidance from the IRS. We sold approximately 3,100 thousand microinverter units in the six months ended June 30, 2020, as compared to approximately 2,260 thousand units in the same period in 2019.

 
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Cost of Revenues and existing Enphase IQ solar systems with IQ 6™ or IQ 7™ microinverters and provide a simple upgrade path for the company’s existing solar customers

Results of Operations
Net Revenues Gross Profit
 Three Months Ended
March 31,
 Change in
 2020 2019 $ %
 (In thousands, except percentages)
Net revenues$205,545
 $100,150
 $105,395
 105%
 Three Months Ended
June 30,
 Change in Six Months Ended
June 30,
 Change in
 2020 2019 $ % 2020 2019 $ %
 (In thousands, except percentages)
Cost of revenues$77,151
 $88,775
 $(11,624) (13)% $202,021
 $155,586
 $46,435
 30%
Gross profit48,387
 45,319
 3,068
 7 % 129,062
 78,658
 50,404
 64%
Gross margin38.5% 33.8% 

   39.0% 33.6% 

  
Three months ended March 31,June 30, 2020 and 2019
NetCost of revenues increaseddecreased by 105%13% or $105.4$11.6 million for the three months ended March 31,June 30, 2020, as compared to the same period in 2019, primarily due to the 106% increase in microinverter unitlower volume shipped. We sold approximately 2,012 thousandof microinverter units sold as a result of a decline in sales orders during the COVID-19 pandemic, as well as a decrease in the unit cost of our products as a result of our cost reduction efforts. Gross margin increased by 4.7 percentage points for the three months ended March 31,June 30, 2020, as compared to approximately 976 thousand unitsthe same period in 2019. The increase in gross margin was primarily attributable to our overall pricing and cost management efforts, including the transition of our contract manufacturing to Mexico to mitigate tariffs, partially offset by a higher fixed costs per unit due to lower volume. IQ 7 sales represented almost 100% of our total microinverter sales for the three months ended June 30, 2020, as compared to 98% of our total microinverter sales in in the same period in 2019.
Cost of Revenues and Gross Profit
 Three Months Ended
March 31,
 Change in
 2020 2019 $ %
 (In thousands, except percentages)
Cost of revenues$124,870
 $66,811
 $58,059
 87%
Gross profit80,675
 33,339
 47,336
 142%
Gross margin39.2% 33.3% 

  
ThreeSix months ended March 31,June 30, 2020 and 2019
Cost of revenues increased by 87%30% or $58.1$46.4 million for the threesix months ended March 31,June 30, 2020, as compared to the same period in 2019, primarily due to higher volume of microinverter units sold primarily as a result of business growth in the U.S., as well as higher units shipped in the first quarter of 2020 as our customers took advantage of safe harbor guidance from the IRS, partially offset by a decrease in the unit cost of our products as a result of our cost reduction efforts. Gross margin increased by 5.95.4 percentage points for the threesix months ended March 31,June 30, 2020, as compared to the same period in 2019. The increase in gross margin was primarily attributable to higher product margins as a result our IQ 7 family of microinverters, which has a lower cost than previous models of microinverters, as well as our overall pricing and cost management efforts.efforts, including the transition of our contract manufacturing to Mexico to mitigate tariffs. IQ 7 sales represented almost 100% of our total microinverter sales for the threesix months ended March 31,June 30, 2020, as compared to 94%96% of our total microinverter sales in in the same period in 2019.
Research and Development
Three Months Ended
March 31,
 Change inThree Months Ended
June 30,
 Change in Six Months Ended
June 30,
 Change in
2020 2019 $ %2020 2019 $ % 2020 2019 $ %
(In thousands, except percentages)(In thousands, except percentages)
Research and development$11,876
 $8,524
 $3,352
 39%$13,192
 $9,604
 $3,588
 37% $25,068
 $18,128
 $6,940
 38%
Percentage of net revenues6% 9%    11% 7%     8% 8%    
Three months ended March 31,June 30, 2020 and 2019
Research and development expense increased by 39%37% or $3.4$3.6 million for the three months ended March 31,June 30, 2020, as compared to the same period in 2019. The increase iswas primarily due to $2.8$2.6 million higher personnel-related expenses and $0.6$0.9 million of outside consulting and engineering services associated with the innovation and development, introduction and qualification of new products. The increase in personnel-related expenses was primarily due to hiring employees in New Zealand, India and U.S., increasing total compensation costs. The amount of research and development expenses may fluctuate from period to period due to differing levels and stages of development activity.

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Six months ended June 30, 2020 and 2019
Research and development expense increased by 38% or $6.9 million for the six months ended June 30, 2020, as compared to the same period in 2019. The increase was primarily due to $5.5 million higher personnel-related expenses and $1.5 million of outside consulting and engineering services associated with the innovation and development, introduction and qualification of new products. The increase in personnel-related expenses was primarily due to hiring employees in New Zealand, India and US, increasing total compensation costs. The amount of research and development expenses may fluctuate from period to period due to the differing levels and stages of development activity.

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Sales and Marketing
Three Months Ended
March 31,
 Change inThree Months Ended
June 30,
 Change in Six Months Ended
June 30,
 Change in
2020 2019 $ %2020 2019 $ % 2020 2019 $ %
(In thousands, except percentages)(In thousands, except percentages)
Sales and marketing$11,772
 $7,433
 $4,339
 58%$12,371
 $9,054
 $3,317
 37% $24,143
 $16,487
 $7,656
 46%
Percentage of net revenues6% 7% 
 
10% 7% 
 
 7% 7%    
Three months ended March 31,June 30, 2020 and 2019
Sales and marketing expense increased by 58%37% or $4.3$3.3 million for the three months ended March 31,June 30, 2020 as compared to the same period in 2019. The increase was primarily due to $3.0$3.3 million of higher personnel-related expenses as a result of our efforts to improve customer experience by hiring additional employees to reduce the average call wait time for customers, as well as support our business growth in the U.S. and international expansion in Europe, and $0.3 million for a combination of higher professional services, advertising and marketing expenditures to enable business growth, partially offset by $0.4 million reduction in travel expenditure as we implemented travel restrictions prohibiting all non-essential business travel and converting where possible our in-person sales, trainings and marketing events to virtual-only due to COVID-19.
Six months ended June 30, 2020 and 2019
Sales and marketing expense increased by 46% or $7.7 million for the six months ended June 30, 2020 as compared to the same period in 2019. The increase was primarily due to $6.3 million of higher personnel-related expenses as result of our efforts to improve customer experience by hiring additional employees to reduce the average call wait time for customers, as well as support our business growth in the U.S. and international expansion in Europe, and $1.2$1.3 million for a combination of higher professional services, training seminars, advertising and marketing expenditures to enable business growth.

growth, partially offset by $0.2 million reduction in travel expenditure as we implemented travel restrictions prohibiting all non-essential business travel and converting where possible our in-person sales, trainings and marketing events to virtual-only due to COVID-19.
General and Administrative
Three Months Ended
March 31,
 Change inThree Months Ended
June 30,
 Change in Six Months Ended
June 30,
 Change in
2020 2019 $ %2020 2019 $ % 2020 2019 $ %
(In thousands, except percentages)(In thousands, except percentages)
General and administrative$12,315
 $9,880
 $2,435
 25%$11,970
 $8,583
 $3,387
 39% $24,285
 $18,463
 $5,822
 32%
Percentage of net revenues6% 10%    10% 6%     7% 8%    
Three months ended March 31,June 30, 2020 and 2019
General and administrative expense increased 25%39% or $2.4$3.4 million for the three months ended March 31,June 30, 2020, as compared to the same period in 2019. The increase was primarily due to $2.9$2.6 million of higher personnel-related expenses, $0.6 million higher professional services and $0.3 million of higher facilities costs to support our business growth.growth, partially offset by $0.2 million reduction in travel expenditures as we implemented travel restrictions prohibiting all non-essential business travel in response to COVID-19.

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Six months ended June 30, 2020 and 2019
General and administrative expense increased 32% or $5.8 million for the six months ended June 30, 2020, as compared to the same period in 2019. The increase was primarily due to $5.5 million of higher personnel-related expenses and $0.6 million of higher facilities costs to support our business growth, partially offset by $0.2 million reduction in travel expenditures as we implemented travel restrictions prohibiting all non-essential business travel in response to COVID-19.
Restructuring Charges
 Three Months Ended
March 31,
 Change in
 2020 2019 $ %
 (In thousands, except percentages)
Restructuring charges$
 $368
 $(368) (100)%
 Three Months Ended
June 30,
 Change in Six Months Ended
June 30,
 Change in
 2020 2019 $ % 2020 2019 $ %
 (In thousands, except percentages)
Restructuring charges$
 $631
 $(631) (100)% $
 $999
 $(999) (100)%
Three months ended March 31,June 30, 2020 and 2019
We completed our 2018 restructuring plan in 2019, hence we incurred no restructuring expenses during the three months ended March 31,June 30, 2020. Restructuring charges for three months ended March 31,June 30, 2019 primarily included $0.5$0.6 million of one-time termination benefits and other employee-related expenses under our 2018 Plan.
Six months ended June 30, 2020 and 2019
We completed our 2018 restructuring plan in 2019, hence we incurred no restructuring expenses during the six months ended June 30, 2020. Restructuring expense for the six months ended June 30, 2019 primarily include $1.1 million of one-time termination benefits and other employee-related expenses under our 2018 Plan, partially offset by a $0.1 million reduction in lease loss reserves.reserve.
Other Expense, Net
 Three Months Ended
June 30,
 Change in Six Months Ended
June 30,
 Change in
 2020 2019 $ % 2020 2019 $ %
 (In thousands, except percentages)
Interest income$282
 $593
 $(311) (52)% $1,373
 $804
 $569
 71 %
Interest expense(5,952) (1,351) (4,601) 341 % (9,107) (5,102) (4,005) 78 %
Other (expense) income, net653
 (5,480) 6,133
 (112)% (271) (5,961) 5,690
 (95)%
Change in fair value of derivatives(59,692) 
 (59,692) ** $(44,348) $
 $(44,348) **
Total other expense, net$(64,709) $(6,238) $(58,471) (937)% $(52,353) $(10,259) $(42,094) (410)%
**    Not meaningful
Three months ended June 30, 2020 and 2019
Interest income of $0.3 million for the three months ended June 30, 2020 decreased, as compared to $0.6 million in the same period in 2019, primarily due to significant decline in interest rates earned on cash balances, partially offset by higher average cash balance earning interest in the three months ended June 30, 2020 compared to the same period in 2019.

 
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Other Income (Expense), Net
 Three Months Ended
March 31,
 Change in
 2020 2019 $ %
 (In thousands, except percentages)
Interest income$1,091
 $211
 $880
 417 %
Interest expense(3,155) (3,751) 596
 (16)%
Other expense, net(924) (481) (443) 92 %
Change in fair value of derivatives15,344
 
 15,344
 100 %
Total other income (expense), net$12,356
 $(4,021) $16,377
 407 %
Three months ended March 31, 2020 and 2019
Interest incomeexpense of $1.1$6.0 million for the three months ended March 31, 2020 increased, as compared to $0.2 million in the same period in 2019, primarily due to interest earned on a higher average cash balance.
Interest expense of $3.2 million for the three months ended March 31,June 30, 2020 primarily includes $2.9$5.8 million related to the accretion of the debt discount, amortization of debt issuance cost and coupon interest incurred associated with our Notes due 2024 and Notes due 2025, $0.2interest expense of $0.1 million related to coupon interest incurred and amortization of debt issuance costs associated with our Notes due 2023 and $0.1 million of interest expense related to long-term financing receivable recorded as debt and. Interest expense of $1.4 million for the three months ended June 30, 2019 primarily includes $0.6 million related to the accretion of the debt discount, amortization of debt issuance cost and coupon interest incurred associated with our Notes due 2024, interest expense of $0.6 million related to coupon interest incurred and amortization of debt issuance costs associated with our Notes due 2023 and $0.1 million interest expense related to long-term financing receivable recorded as debt.
Other (expense) income, net of $0.7 million for the three months ended June 30, 2020, relates to a net gain related to foreign currency exchange and remeasurement. Other (expense) income, net of $5.5 million for the three months ended June 30, 2019, primarily relates to the $6.0 million fees paid for the repurchase and exchange of our Notes due 2023, partially offset by a net gain related to foreign currency exchange and remeasurement of $0.5 million.
Change in fair value of derivatives of $59.7 million in the three months ended June 30, 2020 primarily includes the charge recognized for the change in fair value of our convertible notes embedded derivative and warrants of $71.2 million and $57.7 million, respectively. This charge is partially offset by a gain recognized for the change in fair value of our convertible notes hedge of $69.2 million. See Note 8, “Debt,” of the notes to condensed consolidated financial statements included in Part I, Item 1 of this Form 10-Q for additional information.
Six months ended June 30, 2020 and 2019
Interest income of $1.4 million the six months ended June 30, 2020 increased, as compared to $0.8 million in the same period in 2019, primarily due to interest earned on a higher average cash balance, partially offset by significant decline in interest rates.
Interest expense of $9.1 million for the six months ended June 30, 2020 primarily includes $8.7 million related to the accretion of the debt discount, amortization of debt issuance cost and coupon interest incurred associated with our Notes due 2024 and Notes due 2025, $0.3 million of interest expense related to long-term financing receivable recorded as debt and interest expense of $0.1 million related to coupon interest incurred and amortization of debt issuance costs associated with our Notes due 2023.2023.. Interest expense of $3.8$5.1 million for the threesix months ended March 31,June 30, 2019 primarily includes $3.2 million related to the repayment of our term loans, interest expense of $2.8 million related to our Term Loans which were repaid in full on January 28, 2019 and $0.8$1.4 million related to coupon interest incurred and amortization of debt issuance costs associated with our Notes due 2023.2023, and $0.6 million related to the accretion of the debt discount, amortization of debt issuance cost and coupon interest incurred associated with our Notes due 2024.
Other expense,(expense) income, net of $0.9$0.3 million for the threesix months ended March 31,June 30, 2020 primarily relates to athe net loss related to foreign currency exchange and remeasurement. Other expense,(expense) income, net of $0.5$6.0 million for the threesix months ended March 31,June 30, 2019 primarily relates to a net loss related to foreign currencythe $6.0 million fees paid for the repurchase and exchange and remeasurement.
The conversion option associated with theof our Notes due 2025 currently meets the criteria for an embedded derivative liability which required bifurcation and separate accounting. In addition, the privately-negotiated convertible note hedge and warrant transactions are also currently classified as a derivative asset and liability, respectively, on our condensed consolidated balance sheet as of March 31, 2020. On the date we increase our authorized shares of common stock and satisfy the share reservation condition, the derivative asset and liabilities will be reclassified to additional paid-in capital as the equity classification criteria is met. It is anticipated the share reservation condition will be satisfied promptly following our 2020 annual meeting of stockholders. Changes in the fair value of these derivatives prior to being classified in equity are reflected in other income (expense), net, in our condensed consolidated statement of operations. 2023.
Change in fair value of derivatives of $15.3$44.3 million infor the threesix months ended March 31,June 30, 2020 primarily includes the gaincharge recognized for the change in fair value of our convertible notes embedded derivative and warrants of $23.6$47.6 million and $32.9$24.7 million, respectively. This gaincharge is partially offset by a lossgain recognized for the change in fair value of our convertible notes hedge of $41.2$28.0 million. See Note 8, “Debt,” of the notes to condensed consolidated financial statements included in Part I, Item 1 of this Form 10-Q for additional information.

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Income Tax Benefit (Provision)
 Three Months Ended
March 31,
 Change in
 2020 2019 $ %
 (In thousands, except percentages)
Income tax benefit (provision)$11,868
 $(348) $12,216
 (3,510)%
 Three Months Ended
June 30,
 Change in Six Months Ended
June 30,
 Change in
 2020 2019 $ % 2020 2019 $ %
 (In thousands, except percentages)
Income tax benefit (provision)$6,561
 $(591) $7,152
 ** $18,429
 $(939) $19,368
 **
**    Not meaningful
Three months ended March 31,June 30, 2020 and 2019
The income tax benefit of $11.9$6.6 million for the three months ended March 31,June 30, 2020, calculated using the annualized effective tax rate method, increased compared to the income tax provision of $0.3$0.6 million in 2019, calculated using the discrete tax approach, which is due to increased tax deduction of stock based compensation partially offset by higher projected tax expense in the U.S. and foreign jurisdictions that are profitable in 2020 compared to 2019.
Six months ended June 30, 2020 and 2019
The income tax benefit of $18.4 million for the six months ended June 30, 2020, calculated using the annualized effective tax rate method, increased compared to the income tax provision of $0.9 million in 2019, calculated using the discrete tax approach, which is due to tax deduction from employee stock compensation as a discrete event in the threesix months ended March 31,June 30, 2020, partially offset by higher projected tax expense in the U.S. and foreign jurisdictions that are profitable in 2020 compared to 2019.

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Liquidity and Capital Resources
Sources of Liquidity
As of March 31,June 30, 2020, we had $549.1$607.3 million in cash and cash equivalents $44.7 million in restricted cash and $518.1$533.7 million in working capital. Cash and cash equivalents and restricted cash held in the U.S. were $588.5$600.5 million and consisted primarily of U.S. government money market mutual funds and both interest-bearing and non-interest-bearing deposits, with the remainder held in various foreign subsidiaries. Restricted cash represents cash held by us in the form of a certificate of deposit collateralized under a letter of credit we issued to a customer that expired on April 30, 2020. We consider amounts held outside the U.S. to be accessible and have provided for the estimated U.S. income tax liability associated with our foreign earnings. However, our liquidity may be negatively impacted if sales decline significantly for an extended period due to the impact of the COVID-19 pandemic. Further, the extent to which the COVID-19 pandemic and our precautionary measures in response thereto impact our business and liquidity will depend on future developments, which are highly uncertain and cannot be precisely predicted at this time.
Convertible Notes
Notes due 2023. As of March 31,June 30, 2020, we had $5.0 million aggregate principal amount of our Notes due 2023 outstanding. The Notes due 2023 are general unsecured obligations and bear interest at a rate of 4.00% per year, payable semi-annually on February 1 and August 1 of each year. The Notes due 2023 will mature on August 1, 2023, unless earlier repurchased by us or converted at the option of the holders.
Notes due 2024. As of March 31,June 30, 2020, we had $132.0 million aggregate principal amount of our Notes due 2024 outstanding. The Notes due 2024 are general unsecured obligations and bear interest at a rate of 1.0% per year, payable semi-annually on June 1 and December 1 of each year. The Notes due 2024 will mature on June 1, 2024, unless earlier repurchased by us or converted at the option of the holders at a conversion price of $20.50 per share.

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The Notes due 2024 may be converted on any day prior to the close of business on the business day immediately preceding December 1, 2023, in multiples of $1,000 principal amount, at the option of the holder only under any of the following circumstances: (1) during any calendar quarter commencing after the calendar quarter ending on September 30, 2019 (and only during such calendar quarter), if the last reported sale price of the our common stock for at least 20 trading days (whether or not consecutive) during a period of 30 consecutive trading days ending on, and including, the last trading day of the immediately preceding calendar quarter is greater than or equal to $26.6513 (130% of the conversion price) on each applicable trading day; (2) during the five business day period after any five consecutive trading day period (the “measurement period”) in which the “trading price” (as defined in the relevant indenture) per $1,000 principal amount of notes for each trading day of the measurement period was less than 98% of the product of the last reported sale price of the our common stock and the conversion rate on each such trading day; or (3) upon the occurrence of specified corporate events. Upon conversion of any of the notes, we will pay or deliver, as the case may be, cash, shares of common stock or a combination of cash and common stock, at our election.
As ofFrom April 1, 2020 through JuneSeptember 30, 2020, the Notes due 2024 may be converted because the last reported sale price of our common stock for at least 20 trading days during a period of 30 consecutive trading days ending on March 31, 2020 and June 30, 2020 was greater than or equal to $26.6513 on each applicable trading day. Upon conversion of any of the notes, we will pay or deliver, as the case may be, cash, shares of common stock or a combination of cash and common stock, at our election.
In connection with the offering of the Notes due 2024, we entered into privately-negotiated convertible note hedge transactions in order to reduce the potential dilution to our common stock upon any conversion of the Notes due 2024. Also, concurrently with the offering of the Notes due 2024, we entered into privately-negotiated warrant transactions whereby we issued warrants to effectively increase the overall conversion price of Notes due 2024 from $20.5010 to $25.2320.
As of May 5,August 4, 2020, the Notes due 2024 were not converted into equity, therefore, we had not purchased any shares under the convertible note hedge and the warrants had not been exercised and remain outstanding. If holders of the Notes due 2024 exercise their right to convert the debt to equity we have asserted our intent and ability to settle the $132.0 million aggregate principal amount of the Notes due 2024 in cash.

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Notes due 2025. As of March 31,June 30, 2020, we had $320.0 million aggregate principal amount of our Notes due 2025 outstanding. The Notes due 2025 are general unsecured obligations and bear interest at a rate of 0.25% per year, payable semi-annually on March 1 and September 1 of each year, beginning on September 1, 2020. The Notes due 2025 will mature on March 1, 2025, unless earlier repurchased by us or converted at the option of the holders at a conversion price of $81.54 per share.
The Notes due 2025 may be converted on any day prior to the close of business on the business day immediately preceding September 1, 2024, in multiples of $1,000 principal amount, at the option of the holder only under any of the following circumstances: (1) during any calendar quarter commencing after the calendar quarter ending on June 30, 2020 (and only during such calendar quarter), if the last reported sale price of the our common stock for at least 20 trading days (whether or not consecutive) during a period of 30 consecutive trading days ending on, and including, the last trading day of the immediately preceding calendar quarter is greater than or equal to $81.5400 (130% of the conversion price) on each applicable trading day; (2) during the five business day period after any five consecutive trading day period (the “measurement period”) in which the “trading price” (as defined in the relevant indenture) per $1,000 principal amount of notes for each trading day of the measurement period was less than 98% of the product of the last reported sale price of the our common stock and the conversion rate on each such trading day; or (3) upon the occurrence of specified corporate events. Until, we satisfy share reservation condition, initially upon conversionOn and after September 1, 2024 until the close of business on the second scheduled trading day immediately preceding the maturity date of March 1, 2025, holders may convert their notes at any time, regardless of the foregoing circumstances. Upon the occurrence of a fundamental change (as defined in the relevant indenture), holders may require the Company to repurchase all or a portion of their Notes due 2025 for cash at a price equal to 100% of the principal amount of the notes we will pay to be repurchased plus any accrued and unpaid interest to, but excluding, the converting holder in respect of each $1,000 principal amount of notes being converted solely cash in an amount equal to the sum of the daily conversion values for each of the 20 consecutive trading days during the related observation period. However, following satisfaction of the share reservation condition, we will settle conversions of notes through payment or delivery, as the case may be, of cash, shares of our common stock or a combination of cash and shares of our common stock, at our election.fundamental change repurchase date.
In connection with the offering of the Notes due 2025, we entered into privately-negotiated convertible note hedge transactions in order to reduce the potential dilution to our common stock upon any conversion of the Notes due 2025. The total cost of the convertible note hedge transactions was approximately $89.1 million. Also, concurrently with the offering of the Notes due 2025, we entered into privately-negotiated warrant transactions whereby we issued warrants to acquire shares of our common stock at a strike price of $106.9400 rather than the Notes due 2025 conversion price of $81.5400. We received approximately $71.6 million from the sale of the warrants.

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As of May 5,August 4, 2020, the Notes due 2025 arewere not convertible, into cash, therefore, we had not purchased any shares under the convertible note hedge and the warrants had not been exercised and remain outstanding. If holders of the Notes due 2025 are able to convert the debt to cash,equity, and exercise that right, we have theasserted our intent and ability to settle the $320.0 million aggregate principal amount of the Notes due 2025 in cash. See Note 8, “Debt,” of the notes to condensed consolidated financial statements included in Part I, Item 1 of this Form 10-Q for more information relating to the convertible note hedge transactions and warrants.
Cash from operations could be affected by various risks and uncertainties, including, but not limited to, the effects of COVID-19 and other risks detailed in Part II, Item 1A “Risk Factors” of this Quarterly Report on Form 10-Q, as well as in the “Risk Factors” section in our 2019 Annual Report on Form 10-K. We believe that our existing cash cash equivalents and restrictedflow from operations with existing cash and cash flows from our operating activitiesequivalents will be sufficient to meet our anticipated cash needs for at least the next 12 months.months and thereafter for the foreseeable future. Our future capital requirements will depend on many factors including our growth rate, the timing and extent of spending to support development efforts, the expansion of sales and marketing activities, the introduction of new and enhanced products, the costs to acquire or invest in complementary businesses and technologies, the costs to ensure access to adequate manufacturing capacity, the continuing market acceptance of our products and macroeconomic events such as COVID-19. We may also choose to seek additional equity or debt financing. In the event that additional financing is required from outside sources, we may not be able to raise it on terms acceptable to us or at all. If we are unable to raise additional capital when desired, our business, operating results, and financial condition may be adversely affected.
Cash Flows. The following table summarizes our cash flows for the periods presented:
Three Months Ended
March 31,
Six Months Ended
June 30,
2020 20192020 2019
(In thousands)(In thousands)
Net cash provided by operating activities$39,222
 $17,063
$64,653
 $31,835
Net cash used in investing activities(3,353) (658)(7,804) (3,176)
Net cash provided by (used in) financing activities262,071
 (44,422)
Net cash provided by financing activities254,477
 70,956
Effect of exchange rate changes on cash(205) (133)(181) 107
Net increase in cash, cash equivalents and restricted cash$297,735
 $(28,150)
Net increase in cash and cash equivalents$311,145
 $99,722
Cash Flows from Operating Activities
For the six months ended June 30, 2020, net cash provided by operating activities was $64.7 million compared to net cash provided by operating activities of $31.8 million in the same period 2019, an increase of $32.8 million year-over-year. This $32.8 million increase in net cash provided by operating activities is primarily driven by an increase in our net revenues of $96.8 million and an increase of $50.4 million in gross profit, resulting in $8.3 million of higher net income generated during the six months ended June 30, 2020 as compared to the same period in 2019, adjusted for a $34.3 million higher net non-cash charges, partially offset by $9.8 million increase in cash used in changes in working capital. Non-cash charges include change in the fair value of derivatives, deferred income tax, stock-based compensation, amortization of debt discount, and depreciation and amortization.
The $9.8 million increase in the cash used in changes in the working capital for the six months ended June 30, 2020, compared to the same period in 2019, was primarily due to $36.7 million decrease in deferred revenue as we delivered safe harbor orders that were prepaid in the fourth quarter of 2019 and $52.2 million decrease in accounts payable due to pay off of liabilities, partially offset by collections of $75.3 million of accounts receivable and $4.7 million decrease in inventory.
Cash Flows from Investing Activities
For the six months ended June 30, 2020, net cash used in investing activities was $7.8 million, primarily from purchases of test and assembly equipment to expand our supply capacity, related facility improvements and information technology enhancements, and capitalized costs related to internal-use software.
For the six months ended June 30, 2019, net cash used in investing activities of $3.2 million primarily resulted from purchases of test and assembly equipment and capitalized costs related to internal-use software.

 
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Cash Flows from Operating Activities
For the three months ended March 31, 2020, net cash provided by operating activities was $39.2 million compared to net cash provided by operating activities of $17.1 million in the same period 2019, an increase of $22.1 million quarter-over-quarter. The $22.1 million increase in net cash provided by operating activities in three months ended March 31, 2020 compared to the same period in 2019, was primarily due to higher profitability in the first quarter of 2020 of $66.2 million higher net income, partially offset by higher net non-cash benefit of $24.2 million and $19.8 million changes in working capital. The higher net non-cash benefit of $24.2 million in the first quarter of 2020, compared to the same period in 2019, primarily comprises of $15.3 million of gain due to change in the fair value of derivatives, $12.5 million higher deferred income tax benefit due to benefit from vesting of RSUs at higher stock price compared to grant date stock price and $2.2 million financing fees on extinguishment of debt in the three months ended March 31, 2019 not incurred in the same period in 2020, partially offset by higher non-cash charges for $4.2 million higher stock-based compensation, $1.2 million higher non-cash interest expense primarily due to debt discount on Notes due 2024 and Notes due 2025 and $0.3 million higher depreciation and amortization.
The $19.8 million net cash used due to changes in the working capital in the first quarter of 2020, compared to the same period in 2019, was primarily due to $38.0 million decrease in deferred revenue as we delivered safe harbor orders that were prepaid in the fourth quarter of 2019, $26.9 million decrease in accounts payable due to pay off of liabilities, $5.9 million increase in inventory and $2.6 million increase in prepaid expenses and other assets, partially offset by collections of $52.9 million of accounts receivable mainly driven by our safe harbor order deliveries in the first quarter of 2020 that was prepaid in the fourth quarter of 2019.
Cash Flows from Investing Activities
For the three months ended March 31, 2020, net cash used in investing activities was $3.4 million, primarily from purchases of test and assembly equipment to expand our supply capacity and related facility improvements, and capitalized costs related to internal-use software.
For the three months ended March 31, 2019, net cash used in investing activities of $0.7 million primarily resulted from purchases of test and assembly equipment and capitalized costs related to internal-use software.
Cash Flows from Financing Activities
For the threesix months ended March 31,June 30, 2020, net cash provided by financing activities of $262.1$254.5 million was primarily from $313.0$312.4 million net proceeds from the issuance of our Notes due 2025, $71.6 million from sale of warrants related to our Notes due 2025, $2.0$4.8 million net proceeds from employee stock option exercises and issuance of common stock under our employee stock incentive program, partially offset by $89.1 million purchase of convertible note bond hedge related to our Notes due 2025, $34.3$43.7 million payment of employee withholding taxes related to net share settlement of equity awards and $1.1$1.6 million of repayment on sale of long-term financing receivables.
For the threesix months ended March 31,June 30, 2019, net cash usedprovided by financing activities of $44.4$71.0 million was primarily from $44.7net proceeds of $128.0 million received from the issuance of our Notes due 2024, $29.8 million from sale of warrants, as well as $0.5 million net proceeds from issuance of common stock under our employee stock incentive program. These proceeds were partially offset by $45.1 million for principal payments on debts and financing fees associated with repayment of our term loan, which was partially offset by $0.3$36.3 million in net proceeds from salesfor purchase of common stock underbond hedges related to our employee stock incentive program.Notes due 2024 and $6.0 million attributable to inducement costs incurred for repurchase of our Notes due 2023.

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Contractual Obligations
The following table summarizes our outstanding contractual obligations as of March 31,June 30, 2020.
Payments Due by PeriodPayments Due by Period
Total 2020 (remaining nine months) 2021-2022 2023-2024 Beyond 2024Total 2020 (remaining six months) 2021-2022 2023-2024 Beyond 2024
(In thousands)(In thousands)
Operating leases$17,356
 $3,432
 $7,988
 $4,034
 $1,902
$16,393
 $2,307
 $8,044
 $4,093
 $1,949
Notes due 2023 principal and interest5,800
 200
 400
 5,200
 
5,800
 200
 400
 5,200
 
Notes due 2024 principal and interest137,958
 1,320
 2,640
 133,998
 
137,298
 660
 2,640
 133,998
 
Notes due 2025 principal and interest323,984
 382
 1,600
 1,600
 320,402
323,984
 382
 1,600
 1,600
 320,402
Purchase obligations (1)
95,630
 95,630
 
 
 
75,230
 75,230
 
 
 
Total$580,728
 $100,964
 $12,628
 $144,832
 $322,304
$558,705
 $78,779
 $12,684
 $144,891
 $322,351
  
(1)Purchase obligations include amounts related to component inventory that our primary contract manufacturer procures on our behalf in accordance with our production forecast as well as other inventory related purchase commitments. The timing of purchases in future periods could differ materially from estimates presented above due to fluctuations in demand requirements related to varying sales levels as well as changes in economic conditions.
Off-Balance Sheet Arrangements
As of March 31,June 30, 2020, we did not have any off-balance sheet arrangements, as defined in Item 303(a)(4)(ii) of SEC Regulation S-K.
Critical Accounting Policies
Our condensed consolidated financial statements are prepared in accordance with accounting principles generally accepted in the U.S., or GAAP. In connection with the preparation of our condensed consolidated financial statements, we are required to make assumptions and estimates about future events and apply judgments that affect the reported amounts of assets, liabilities, revenue, expenses and related disclosures. We base our assumptions, estimates and judgments on historical experience, current trends and other factors that management believes to be relevant at the time our condensed consolidated financial statements are prepared. On a regular basis, we review the accounting policies, assumptions, estimates and judgments to ensure that our condensed consolidated financial statements are presented fairly and in accordance with GAAP. However, because future events and their effects cannot be determined with certainty, actual results could differ from our assumptions and estimates. To the extent that there are material differences between these estimates and actual results, our future financial statement presentation, financial condition, results of operations and cash flows will be affected.
The worldwide spread of the COVID-19 virus is expected to resulthas resulted in a global slowdown of economic activity which is likely to decreasedecreased demand for a broad variety of goods and services, including from our customers, while also disrupting sales

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channels and marketing activities for an unknown period of time until the disease is contained. WeThis had a negative impact on our sales and our results of operations for the second quarter of 2020 and we expect this to continue to have a negative impact on our sales and our results of operations.operations in the third quarter of 2020. In preparing our condensed consolidated financial statements in accordance with GAAP, we are required to make estimates, assumptions and judgments that affect the amounts reported in our financial statements and the accompanying disclosures. Estimates and assumptions about future events and their effects cannot be determined with certainty and therefore require the exercise of judgment. As of the date of issuance of these financial statements, we are not aware of any specific event or circumstance that would require us to update our estimates, judgments or revise the carrying value of our assets or liabilities. These estimates may change, as new events occur and additional information is obtained, and are recognized in the condensed consolidated financial statements as soon as they become known. Actual results could differ from those estimates and any such differences may be material to our financial statements.
We consider an accounting policy to be critical if it requires an accounting estimate to be made based on assumptions about matters that are highly uncertain at the time the estimate is made, and if different estimates that reasonably could have been used, or changes in the accounting estimates that are reasonably likely to occur periodically, could materially impact the condensed consolidated financial statements.

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Adoption of New and Recently Issued Accounting Pronouncements
Refer to Note 1. “Summary of Significant Accounting Policies” of the notes to condensed consolidated financial statements included in Part I, Item 1 of this Form 10-Q for a discussion of adoption of new and recently issued accounting pronouncements.
Item 3. Quantitative and Qualitative Disclosures About Market Risk
For quantitative and qualitative disclosures about market risk, see Item 7A, “Quantitative and Qualitative Disclosures About Market Risk” of our Annual Report on Form 10‑K for the fiscal year ended December 31, 2019. Our exposures to market risk have not changed materially since December 31, 2019, except as described below.
Market Risk
On March 9, 2020, we issued $320 million aggregate principal amount of our Notes due 2025, and entered into privately-negotiated convertible note hedge and warrant transactions, which in combination are intended to reduce the potential dilution from the conversion of the Notes due 2025 and to effectively increase the overall conversion price from $81.54 to $106.94 per share. UnlessFor the period from March 9, 2020 through May 19, 2020, the Notes due 2025, convertible note hedge and until we havewarrant transactions could only be settled in cash because the number of authorized and unissued shares of our common stock that havewas not been issued or reserved for any other purpose that equals or exceedspurposes was less than the maximum number of underlying shares that would be required to settle ourthe Notes due 2025, into equity,convertible note hedge and warrants transactions. As such, the embedded conversion option associated with the Notes due 2025, convertible notes hedge and warrants liability meetmet the criteria for derivative accounting, and as a result, derivative financial instruments are mark-to-marketwere marked-to-market at each reporting period. The volatile market conditions arising from the COVID-19 pandemic may resultresulted in significant changes in the price of the our common stock and can causein the first half of 2020, causing variability in the fair value of these derivative financial instruments, thusand materially affectaffecting our condensed consolidated statement of operations.operations three and six months ended June 30, 2020. Change in fair value of derivatives of $15.3$59.7 million in the three months ended March 31,June 30, 2020 primarily includes the gaincharge recognized for the change in fair value of our convertible notes embedded derivative and warrants of $23.6$71.2 million and $32.9$57.7 million, respectively,respectively. This charge is partially offset by a lossgain recognized for the change in fair value of our convertible notes hedge of $41.2$69.2 million. Change in fair value of derivatives of $44.3 million for the six months ended June 30, 2020 includes the charge recognized for the change in fair value of our convertible notes embedded derivative and warrants of $47.6 million and $24.7 million, respectively. This charge is partially offset by a gain recognized for the change in fair value of our convertible notes hedge of $28.0 million.
On May 20, 2020, we received approval at our annual meeting of stockholders to increase the authorized shares of our common stock, par value $0.00001 per share, from 150,000,000 shares to 200,000,000 shares. As discussed further in Note 8, “Debt,” of the notes to condensed consolidated financial statements included in Part I, Item 1 of this Form 10-Q, we reclassified the remeasured fair value of embedded derivative, warrants and convertible notes hedge to additional paid-in-capital in the condensed consolidated balance in the second quarter of 2020. As a result of this classification, embedded derivative, warrants and convertible notes hedge are no longer marked to fair value at each reporting period.

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Credit Risk
Financial instruments that subject us to concentrations of credit risk consist primarily of cash and cash equivalents, accounts receivable, and derivative financial instruments. We maintain a substantial portion of our cash balances in non-interest-bearing and interest-bearing deposits and money market accounts. The derivative financial instruments expose us to credit risk to the extent that the counterparties may be unable to meet the terms of the arrangement. We mitigate this credit risk by transacting with major financial institutions with high credit ratings. We are not required to pledge, and are not entitled to receive, cash collateral related to these derivative instruments. We do not enter into derivative contracts for trading or speculative purposes. Our net revenues are primarily concentrated among a limited number of customers. We monitor the financial condition of our customers and perform credit evaluations whenever considered necessary and maintain an allowance for doubtful accounts for estimated potential credit losses.

 
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Item 4. Controls and Procedures
Evaluation of Disclosure Controls and Procedures
Our management, with the participation of our chief executive officer and chief financial officer, evaluated the effectiveness of our disclosure controls and procedures as of March 31,June 30, 2020. The term “disclosure controls and procedures,” as defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934, as amended, or the Exchange Act, includes, without limitation, controls and procedures designed to ensure that information required to be disclosed by a company in the reports that it files or submits under the Exchange Act is accumulated and communicated to the company’s management, including its principal executive and principal financial officers, as appropriate to allow timely decisions regarding required disclosure. Based on the evaluation of our disclosure controls and procedures as of March 31,June 30, 2020, our chief executive officer and chief financial officer concluded that, as of such date, our disclosure controls and procedures were effective at the reasonable assurance level.
Management recognizes that any controls and procedures, no matter how well designed and operated, can provide only reasonable assurance of achieving their objectives and management necessarily applies its judgment in evaluating the cost-benefit relationship of possible controls and procedures.
Changes in Internal Control
There were no changes in our internal control over financial reporting identified in management’s evaluation pursuant to Rules 13a-15(d) or 15d-15(d) of the Exchange Act during the period covered by this Quarterly Report that materially affected, or are reasonably likely to materially affect, our internal control over financial reporting. We have not experienced any material impact to our internal controls over financial reporting despite the fact that most of our employees are working remotely due to the COVID-19 pandemic. We are continually monitoring and assessing the impact of COVID-19 pandemic on our internal controls to minimize the impact on their design and operating effectiveness.


 
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PART II. OTHER INFORMATION
Item 1. Legal Proceedings
From time to time, we maymight be involved in litigationsubject to various legal proceedings relating to claims arising out of our operations. WeThe outcome of litigation is inherently uncertain. If one or more legal matters were resolved against us in a reporting period for amounts above management’s expectations, our business, results of operations, financial position and cash flows for that reporting period could be materially adversely affected. Except as described in this Item 1, we are not currently involved in any material legal proceedings, and our management believes there are currently no claims or actions pending against us, the ultimate disposition of which could have a material adverse effect on our operations, financial condition, or cash flows. We may, however, be involved in material legal proceedings
Class Action Suit
On or about June 17, 2020, Gregory A. Hurst (“Plaintiff”) filed a securities class action lawsuit against our company, our chief executive officer and our chief financial officer (collectively, the "Defendants") in the future. Such mattersUnited States District Court for the Northern District of California on behalf of a class consisting of those individuals who purchased or otherwise acquired our common stock between February 26, 2019 and June 17, 2020. The complaint alleges that defendants made false and/or misleading statements in violation of Sections 10(b) and 20(a) of the Exchange Act of 1934 and Rule 10b-5 promulgated thereunder. Plaintiff does not quantify any alleged damages in his complaint but, in addition to attorneys' fees and costs, he seeks to recover damages on behalf of himself and other persons who purchased or otherwise acquired our stock during the putative class period at allegedly inflated prices and purportedly suffered financial harm as a result. We dispute all allegations, intend to defend the matter vigorously and believe the claims are without merit.
Derivative Action Suit
On or about July 10, 2020, Yan Shen filed a shareholder derivative action lawsuit against Badrinarayanan Kothandaraman, Eric Branderiz, Mandy Yang, Steven J. Gomo, Benjamin Kortlang, Richard Mora, Thurman J. Rodgers, and Enphase Energy, Inc. (nominal defendant) alleging breaches of fiduciary duties, unjust enrichment, abuse of control, gross mismanagement, waste, and violations of Section 14(a) under the Exchange Act of 1934. Plaintiff does not quantify any alleged damages in the complaint, but in addition to attorneys’ fees and costs, seeks a proposal to strengthen the Board’s supervision of operations and shareholder input into the policies and guidelines of the Board; to permit our shareholders to nominate at least three candidates for election to the Board; and to ensure the establishment of effective oversight of compliance with applicable laws, rules, and regulations; and restitution from the individual defendants. We dispute all allegations, intend to defend the matter vigorously and believe the claims are without merit.
The pending lawsuits and any other related lawsuits are subject to uncertaintyinherent uncertainties, and there canthe actual defense and disposition costs will depend upon many unknown factors. The outcome of the pending lawsuits and any other related lawsuits is necessarily uncertain. We could be no assurance thatforced to expend significant resources in the defense of the pending lawsuits and any additional lawsuits, and we may not prevail. In addition, we may incur substantial legal fees and costs in connection with such legal proceedings will not have a material adverse effect on our business, results of operations, financial position or cash flows.lawsuits.
Item 1A. Risk Factors
Other than risk factors described below, there has been no material changes in our risk factors from those disclosed in Part I, Item 1A, in our Annual Report on Form 10‑K for the fiscal year ended December 31, 2019.
The current COVID-19 pandemic, as well as other actual or threatened epidemics, pandemics, outbreaks, or public health crises, may adversely affect our customers’ financial condition and our business.
The worldwide spread of the COVID-19 pandemic has resulted in a global slowdown of economic activity which is likely to decreasehas decreased demand for a broad variety of goods and services, including from our customers, while also disrupting sales channels and marketing activities for an unknown period of time until the disease is contained. We expect this to haveThis has had a negative impact on our sales and itsour results of operations,operations. We are currently unable to predict the size and duration of which we are currently unable to predict.the pandemic’s impact on our future performance.

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Among other impacts, the COVID-19 pandemic and associated governmental orders have slowed, and could continue to slow the rate of solar installations, reduce demand for our products and cause temporary or long-term disruptions in our supply chains and/or delays in the delivery of our inventory. Further, such risks could also adversely affect our customers' financial condition, resulting in reduced spending for the solar products we sell. Moreover, COVID-19 and associated governmental orders could require or cause employees to avoid our properties, which could adversely affect our ability to adequately staff and manage our businesses. “Shelter-in-place” or other such orders by governmental entities could also disrupt our operations, if employees who cannot perform their responsibilities from home, are not able to report to work. Risks related to COVID-19 couldhas also leadled to the complete or partial closure of one or more of our facilities or operations of our customers, suppliers, vendors or other partners.
The ultimate extent of the impact of COVID-19 on our business, financial condition and results of operations will depend on future developments, including those that are highly uncertain and cannot be predicted with confidence at this time, including ultimate duration of the pandemic, travel restrictions, quarantines, social distancing and business closure requirements in the U.S. and other countries, and the effectiveness of actions taken globally to contain and treat the disease. These and other potential impacts of COVID-19 could therefore materially and adversely affect our business, financial condition and results of operations.
To the extent the COVID-19 pandemic adversely affects our business and financial results, it may also have the effect of heightening many of the other risks described in this ‘‘Risk Factors’’ section as well as our risk factors from disclosed in our Annual Report on Form 10‑K for the fiscal year ended December 31, 2019, such as reduced spending for solar energy systems, fluctuations in customer demand, and manufacturing and supply constraints.
The foregoing risks will also likely apply to any other future epidemic, pandemic, outbreak or other public health crisis.
Our business is affected by worldwide economic and market conditions; an unstable economy, a decline in consumer-spending levels and other adverse developments, including inflation, could lead to reduced revenues and gross margins and adversely affect our business, results of operations and liquidity.
Many economic and other factors are outside of our control, including general economic and market conditions, consumer and commercial credit availability, inflation, unemployment, consumer debt levels and other challenges affecting the global economy including the COVID-19 pandemic. Increases in the rates of unemployment, decreases in home values, decrease in new home construction, reduced access to credit and issues related to the domestic and international political situations may adversely affect consumer confidence and disposable income levels. Early societalSocietal responses to the COVID-19 pandemic have involved business closures and limited social interaction as well as work

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reductions. Low consumer confidence and disposable incomes could lead to reduced consumer spending and lower demand for our products, which are discretionary items, the purchase of which can be reduced before customers adjust their budgets for necessities. These factors could have a negative impact on our sales and cause us to increase inventory markdowns and promotional expenses, thereby reducing our gross margins and operating results.
If demand for solar energy solutions decreases as a result of the consequences of the COVID-19 pandemic, our business will suffer.
Our success depends on continued demand for solar energy solutions and the ability of solar equipment vendors to meet this demand. As a consequence of the COVID-19 pandemic, the demand for solar energy solutions decreased in the second quarter of 2020 and may continue to decrease, or at least not continue its growth from recent years, as a result of government orders associated with COVID-19, due to adverse worldwide economic and market conditions, or other factors. If demand for solar energy solutions decreases or does not grow, demand for our customers’ products as well as demand for our products will decrease, which would have an adverse impact on our ability to increase our revenue and grow our business.
Natural disasters, public health events, significant disruptions of information technology systems, data security breaches, or other catastrophic events could adversely affect our operations.
Our worldwide operations could be subject to natural disasters, public health events and other business disruptions, which could harm our future revenue and financial condition and increase our costs and expenses. For example, our corporate headquarters in Fremont, California is located near major earthquake fault lines and our Petaluma, California facility is near fault lines and the sites of recent catastrophic wild fires. We rely on third-party manufacturing facilities including for all product assembly and final testing of our products, which are performed at third-party manufacturing facilities, in China and Mexico. There may be conflict or uncertainty in the countries in which

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we operate, including public health issues (for example, the ongoing COVID-19 pandemic or an outbreak of other contagious diseases or health epidemics), safety issues, natural disasters, fire, disruptions of service from utilities, nuclear power plant accidents or general economic or political factors. Such risks could result in an increase in the cost of components, production delays, general business interruptions, delays from difficulties in obtaining export licenses for certain technology, tariffs and other barriers and restrictions, longer payment cycles, increased taxes, restrictions on the repatriation of funds and the burdens of complying with a variety of foreign laws, any of which could ultimately have a material adverse effect on our business.
Further, any terrorist attacks, material disruption to our information technology systems or any data security breaches, including due to cyber-attacks, especially any aimed at energy or communications infrastructure suppliers or our cloud-based monitoring service, could hinder or delay the development and sale or performance of our products or otherwise adverse affect us. Such significant disruptions of our, our third party vendors’ and/or business partners’ information technology systems or data security breaches, including in our remote work environment as a result of COVID-19, could adversely affect our business operations and/or result in the loss, misappropriation, and/or unauthorized access, use or disclosure of, or the prevention of access to, confidential information (including trade secrets or other intellectual property, proprietary business information and personal information), and could result in financial, legal, business and reputational harm to us. Any such event that leads to unauthorized access, use or disclosure of personal information, including personal information regarding our customers, could harm our reputation, compel us to comply with federal and/or state breach notification laws and foreign law equivalents, subject us to mandatory corrective action, require us to verify the correctness of database contents and otherwise subject us to liability under laws and regulations that protect the privacy and security of personal information, which could disrupt our business, result in increased costs or loss of revenue, and/or result in legal and financial exposure. In addition, security breaches and other inappropriate access can be difficult to detect, and any delay in identifying them may further harm us. Moreover, the prevalent use of mobile devices to access confidential information increases the risk of security breaches. While we have implemented security measures to protect our information technology systems and infrastructure, there can be no assurance that such measures will prevent service interruptions or security breaches that could adversely affect our business. In addition, failure to maintain effective internal accounting controls related to security breaches and cybersecurity in general could impact our ability to produce timely and accurate financial statements and subject us to regulatory scrutiny.
In the event that natural disasters, public health epidemics or technical catastrophes were to damage or destroy any part of our facilities or those of our contract manufacturer, destroy or disrupt vital infrastructure systems or interrupt our operations or services for any extended period of time, our business, financial condition and results of operations would be materially and adversely affected.

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Conversion of our Convertible Notes may dilute the ownership interest of existing stockholders or may otherwise depress the price of our common stock.
In March 2020, we issued and sold a total of $320.0 million aggregate principal amount of our Notes due 2025.
In June 2019, we issued and sold a total of $132.0 million aggregate principal amount of our Notes due 2024.
As of March 31,June 30, 2020,
$5.0 million aggregate principal amount of the Notes due 2023 were outstanding;
$132.0 million aggregate principal amount of the Notes due 2024 were outstanding; and
$320.0 million aggregate principal amount of the Notes due 20242025 were outstanding (the foregoing, collectively, the “Convertible Notes”)
The conversion of some or all of the Convertible Notes may dilute the ownership interests of existing stockholders. Any sales in the public market of the common stock issuable upon such conversion could adversely affect prevailing market prices of our common stock. In addition, the existence of the Convertible Notes may encourage short selling by market participants because the conversion of the Convertible Notes could be used to satisfy short positions. In addition, the anticipated conversion of the Convertible Notes into shares of our common stock could depress the price of our common stock.

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Servicing our debts requires a significant amount of cash, and we may not have sufficient cash flow from our business to pay our debts.
Our ability to make scheduled payments of the principal of, to pay interest on or to refinance our indebtedness, including the Convertible Notes, depends on our future performance, which is subject to economic, financial, competitive and other factors beyond our control. Our business may not continue to generate cash flow from operations in the future sufficient to service our debts, including the Convertible Notes, and make necessary capital expenditures. If we are unable to generate cash flow, we may be required to adopt one or more alternatives, such as selling assets, restructuring debt or obtaining additional equity capital on terms that may be onerous or highly dilutive. Our ability to refinance our indebtedness, including the Convertible Notes, will depend on the capital markets and our financial condition at such time. We may not be able to engage in any of those activities or engage in these activities on desirable terms, which could result in a default on our debt obligations, including our obligations under the Convertible Notes.
As of the reporting date, the number of authorized and unissued shares of our common stock that are not reserved for other purposes is less than the maximum number of underlying shares that will be required to settle the Notes due 2025 into equity. Accordingly, unless and until we have a number of authorized shares that have not been issued or reserved for any other purpose that equals or exceeds the maximum number of underlying shares, holder of the notes may convert the notes solely into cash based on the conversion rate and only under certain circumstances as described herein. Following satisfaction of the share reservation condition, until we elect to satisfy all or a portion of our conversion obligation through delivery of our common stock, holder of the notes are not entitled to any rights with respect to our common stock (including, without limitation, voting rights and rights to receive any dividends or other distributions on our common stock) as a result of the ownership, or upon conversion, of notes. However, the value of notes may be impacted by changes affecting our common stock.
We may not have the ability to raise the funds necessary to repurchase the Convertible Notes upon a fundamental change or to repay the Notes due 2025, Notes due 2024 and the Notes due 2023 at maturity.
Holders of our Convertible Notes will have the right to require us to repurchase all or a portion of their convertible notes upon the occurrence of a fundamental change at 100% of the principal amount of the Notes due 2025, Notes due 2024 and Notes due 2023, plus accrued and unpaid interest. Fundamental change is defined in each of the Convertible Notes Indenture entered into in connection with the financing and consists of events such as an acquisition of a majority of our outstanding common stock, an acquisition of our company or substantially all of our assets, the approval by our stockholders of a plan of liquidation or dissolution, or our common stock no longer being listed on the Nasdaq Global Select Market or the Nasdaq Global Market. We may not have enough available cash or be able to obtain financing at the time we are required to make such repurchase of the Convertible Notes.
Our ability to raise additional capital may also be adversely impacted by potential worsening global economic conditions and potential future disruptions to, and volatility in, the credit and financial markets in the U.S. and worldwide resulting from the ongoing COVID-19 pandemic. If we do not have enough available cash at the time we are required to make the required repurchases of the Convertible Notes, we may be required to undertake one or more actions,

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such as selling assets, attempting to restructure the Convertible Notes or other debt, or obtaining additional capital on terms that may be onerous or highly dilutive. Any such actions could have a material adverse effect on our business, financial condition or results of operations.
The convertible note hedge and warrant transactions and/or their early termination may affect the value of our common stock.
In connection with the offering of the Notes due 2025 and Notes due 2024, we entered into privately negotiated convertible note hedge transactions pursuant to which we have the option to purchase approximately the same number of shares of our common stock initially issuable upon conversion of the Notes due 2025 and Notes due 2024, at a price approximately the same as the initial conversion price of the Notes due 2025 and Notes due 2024. These transactions are expected to reduce the potential dilution with respect to our common stock upon conversion of the Notes due 2025 and Notes due 2024. Separately, we also entered into privately negotiated warrant transactions to acquire the same number of shares of our common stock initially issuable upon conversion of the Notes due 2025 and Notes due 2024 (subject to customary anti-dilution adjustments) at an initial strike price of approximately $106.94 per share and $25.23 per share for Notes due 2025 and Notes due 2024, respectively. If the market value per share of our common stock, as measured under the warrants, exceeds the strike price of the warrants, the warrants will have a dilutive effect on the ownership interests of existing stockholders and on our earnings per share, unless we elect, subject to certain conditions, to settle the warrants in cash. However, we may not have enough available cash or be able to obtain financing at the time of settlement.
In addition, the existence of the convertible note hedge and warrant transactions may encourage purchasing and selling share of our common stock, or other of our securities and instruments, in open market and/or privately negotiated transactions in order to modify hedge positions. Any of these activities could adversely affect the value of our common stock and the value of the Notes due 2025 and Notes due 2024.

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Changes in current accounting methods, standards, or regulations applicable to the Convertible Notes due 2024 and Notes due 2025 could have a material impact on our reported financial results, future financial results, future cash flows, and/or our stock price.
Under Accounting Standards Codification (“ASC”) 470-20, “Debt with Conversion and Other Options,” an entity must separately account for the host contract and conversion option associated with convertible debt instruments, such as the Notes due 2025 and Notes due 2024, that may be settled entirely or partially in cash upon conversion, in a manner that reflects the issuer’s economic interest cost. For Notes due 2024, conversion option meets the classification of an equity component, hence we have included the equity component in the additional paid-in capital section of stockholders’ equity on our condensed consolidated balance sheet at the issuance date. For Notes due 2025, conversion option meetsmet the classification of an embedded derivative liability, from March 9, 2020 to May 19, 2020, and hence we havehad included embedded derivative liability in the Debt, non-current on our condensed consolidated balance sheet at the issuance date. Effective upon the filing of an amendment to our certificate of incorporation on May 20, 2020, the conversion option of the Notes due 2025 met the classification of an equity component, hence we reclassified the embedded derivative liability in the Debt, non-current to additional paid-in capital section of stockholders’ equity on our condensed consolidated balance sheet on May 20, 2020. This change in fair value of derivatives has resulted in a charge recognized of $59.7 million and $44.3 million for the three and six months ended June 30, 2020. We have treated the value of the equity component and embedded derivative liability as debt discount for the host contract.contract at the issuance date. We are required to amortize the debt discount as non-cash interest expense over the term of the Notes due 2025 and Notes due 2024, which could adversely affect our reported or future financial results or the trading price of our common stock.
In addition, we use the treasury stock method for convertible debt instruments (such as the Notes due 2024)2024 since the date of issuance and Notes due 2025 since May 20, 2020) that may be settled entirely or partly in cash, and the effect of which is that any shares issuable upon conversion of the notes are not included in the calculation of diluted earnings per share except to the extent that the conversion value of such notes exceeds their principal amount. Under the treasury stock method, for diluted earnings per share purposes, the transaction is accounted for as if the number of shares of common stock that would be necessary to settle such excess conversion value, if we elected to settle such excess in shares, are issued. We cannot be sure that the accounting standards in the future will continue to permit use of the treasury stock method. If we are unable to use the treasury stock method in accounting for the shares issuable upon conversion of the Notes due 2024 and Notes due 2025, then our diluted earnings per share will be adversely affected. Until we satisfy share reservation condition, Notes due 2025 initially upon conversion of any of the notes are solely convertible into cash.

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Accounting Standards Update (“ASU”) 2016-15, “Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments,” clarifies how certain cash receipts and payments should be classified in the statement of cash flows, including the cash settlement for our Notes due 2024 and Notes due 2025. Upon cash settlement, repayment of the principal amount will be bifurcated between cash outflows for operating activities for the portion related to accreted interest attributable to debt discounts arising from the difference between the coupon interest rate and the effective interest rate, and financing activities for the remainder. This will require us to classify the $36.4 million for Notes due 2024 and $68.7 million for Notes due 2025 of accreted interest as cash used in operating activities in our consolidated statement of cash flows upon cash settlement, which could adversely affect our future cash flow from operations.
The accounting for the notes will resultFrom time to time we are involved in our having to recognize interest expense significantly more than the stated interest rate of the notes and may result in volatility to our condensed consolidated statement of operations. Also, the accounting method for instruments that must be settled in cash, such as the note conversion option and the convertible note hedge transactions, will have a material effect on our reported financial results.
On May 20, 2020, at our Annual Meeting of shareholders, the stockholders will vote on a proposal to amend our certificate of incorporation to increase the number of authorized shareslegal proceedings and, while we cannot predict the outcomes of such proceedings and other contingencies with certainty, some of these outcomes could adversely affect our common stock from 150 million shares to 200 million shares. Unless we obtain such stockholder approval, we will settle any conversionsbusiness and financial condition.
We are, or may become, involved in legal proceedings, government and agency investigations, and consumer, employment, tort and other litigation (see discussion of Legal Proceedings in Item 1 Part II of this Quarterly Report on Form 10-Q). We cannot predict with certainty the Notes due 2025 entirely in cash. Until we obtain such stockholder approval, the abilityoutcomes of holdersthese legal proceedings. The outcome of the notes to convert the notes at their option in certain circumstances, which we refer to as the “conversion option,” will be accounted for as a derivative. In general, thissome of these legal proceeding could require us to establish a separate initial valuation of the conversion option and to bifurcate this valuetake, or refrain from the value attributable to the balance of the notes, or the debt component. As a result, for accounting purposes, we are required to treat the notes as having been issued with a discount to their face principal amount,taking, actions which is referred to as a debt discount. We are required to accrete the debt discount to interest expense over the term of the notes based on an effective interest rate for the notes in our condensed consolidated statement of operations that is in excess of the stated coupon rate of the notes. This will reduce our earnings and could adversely affect the price at which our common stock trades, but will have no effect on the amount of cash interest paid to holders or on our cash flows.
For each financial statement period over the term of the notes, a gain (or loss) will be reported in our consolidated statement of operations to the extent the valuation of the conversion option changes from the previous period. The convertible note hedge and warrants transactions will also be accounted for as derivatives. We expect gains and losses on the convertible note hedge to partially, but not entirely offset the gain (or loss) associated with changes to the valuation of the conversion option. Changes in the price of our common stock and changes in our credit risk, or the credit risk of the counterparties to the convertible note hedge and warrants transactions, can cause variability in the value of these instruments. Should there be significant changes in the price of our common stock, our credit risk, or the credit risk of such counterparties, such changes will result in valuation volatility that could materiallynegatively affect our consolidated statementoperations or could require us to pay substantial amounts of operations.
Upon, receiving stockholder’s approval to increase the number of authorized shares ofmoney adversely affecting our common stock as described herein, then, assuming all of the other requirements for equity classification under ASC 815-40 are met, both the derivative liabilityfinancial condition and derivative asset related to the conversion option and the convertible note hedge transactions may be reclassified to equity and subsequently, provided all of the requirements for equity classification are met prospectively, no additional gain (or loss) from these derivatives will be reported in our consolidated statementresults of operations. However, the original issuance discount on the notes will continue to be accreted to interestAdditionally, defending against lawsuits and legal proceedings may involve significant expense over the remaining termand diversion of the notes.
Even if we obtain the stockholder approval described herein, wemanagement's attention and resources. Negative publicity surrounding such legal proceedings may not meet all of the other equity classification requirements at that point in time or thereafter. If we do not continue to satisfy all of the criteria required for equity classification, the conversion optionalso harm our reputation and the convertible note hedge transactions will continue not to be classified as equity or may be reclassified out of equityadversely impact our business and be subject to re-measurement. Similarly, while we expect to meet the equity classification guidance with regards to the warrants at the inception of the arrangement, if we do not continue to satisfy all of the criteria required for equity classification, the warrants too may be reclassified out of equity and become subject to re-measurement. Changes in fair value resulting from any such re-measurement will be reflected in our consolidated statement of operations.financial condition.

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Item 2. Unregistered Sales of Equity Securities and Use of Proceeds
Except as previously disclosed onNone.

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Item 3. Defaults Upon Senior Securities
None.
Item 4. Mine Safety Disclosures
Not applicable.
Item 5. Other
None.


 
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Item 6. Exhibits
A list of exhibits filed with this report or incorporated herein by reference is found in the Exhibit Index below.

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      Incorporation by Reference
Exhibit Number Exhibit Description Form SEC File No. Exhibit Filing Date Filed Herewith
  8-K 001-35480 3.1 4/6/2012  
  10-Q 001-35480 3.1 8/9/2017  
  10-Q 001-35480 2.1 8/6/2018  
  S-1/A 333-174925 3.5 3/12/2012  
  S-1/A 333-174925 4.1 3/12/2012  
  8-K 001-35480 4.1 8/17/2018  
  8-K 001-35480 4.1 8/17/2018  
  8-K 001-35480 4.1 6/5/2019  
  8-K 001-35480 4.1 6/5/2019  
  8-K 001-35480 4.1 3/9/2020  
  8-K 001-35480 4.2 3/9/2020  
  8-K 001-35480 10.1 3/9/2020  
  8-K 001-35480 10.2 3/9/2020  
  8-K 001-35480 10.3 3/9/2020  
          X
          X
          X
101.INS 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 XBRL Taxonomy Extension Schema Document.         X
101.CAL XBRL Taxonomy Extension Calculation Linkbase Document.         X
101.DEF XBRL Taxonomy Extension Definition Linkbase Document.         X
101.LAB XBRL Taxonomy Extension Label Linkbase Document.         X
101.PRE XBRL Taxonomy Extension Presentation Document.         X
104 Cover Page Interactive Data File (formatted in Inline XBRL and contained in Exhibit 101).         X
      Incorporation by Reference
Exhibit Number Exhibit Description Form SEC File No. Exhibit Filing Date Filed Herewith
  8-K 001-35480 3.1 4/6/2012  
  10-Q 001-35480 3.1 8/9/2017  
  10-Q 001-35480 2.1 8/6/2018  
  8-K 001-35480 3.1 5/27/2020  
  S-1/A 333-174925 3.5 3/12/2012  
  S-1/A 333-174925 4.1 3/12/2012  
  8-K 001-35480 4.1 8/17/2018  
  8-K 001-35480 4.1 8/17/2018  
  8-K 001-35480 4.1 6/5/2019  
  8-K 001-35480 4.1 6/5/2019  
  8-K 001-35480 4.1 3/9/2020  
  8-K 001-35480 4.2 3/9/2020  
          X
          X
          X
101.INS 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 XBRL Taxonomy Extension Schema Document.         X
101.CAL XBRL Taxonomy Extension Calculation Linkbase Document.         X
101.DEF XBRL Taxonomy Extension Definition Linkbase Document.         X
101.LAB XBRL Taxonomy Extension Label Linkbase Document.         X
101.PRE XBRL Taxonomy Extension Presentation Document.         X
104 Cover Page Interactive Data File (formatted in Inline XBRL and contained in Exhibit 101).         X
  

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*The certifications attached as Exhibit 32.1 accompany this quarterly report on Form 10-Q pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, and shall not be deemed “filed” by Enphase Energy, Inc. for purposes of Section 18 of the Securities Exchange Act of 1934, as amended.


 
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SIGNATURE
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this Quarterly Report on Form 10-Q to be signed on its behalf by the undersigned, thereunto duly authorized.

Dated: May 5,August 4, 2020
 ENPHASE ENERGY, INC. 
    
 By: /s/ Eric Branderiz 
   Eric Branderiz 
   Executive Vice President and Chief Financial Officer 
   (Duly Authorized Officer) 

 
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