enph-20211026
0001463101false00014631012021-10-262021-10-26

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
________________________________________________
FORM 8-K
________________________________________________

CURRENT REPORT
Pursuant to Section 13 or 15(d)
of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): October 26, 2021
________________________________________________
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ENPHASE ENERGY, INC.
(Exact name of registrant as specified in its charter)
________________________________________________
Delaware 001-35480 20-4645388
(State or other Jurisdiction of Incorporation) (Commission File No.) (IRS Employer Identification No.)

47281 Bayside Parkway
Fremont, CA 94538
(Address of principal executive offices, including zip code)
(877) 774-7000
(Registrant’s telephone number, including area code)
Not Applicable
(Former name or former address, if changed since last report.)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:
Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))
Securities registered pursuant to Section 12(b) of the Act:
Title of each classTrading Symbol(s)Name of each exchange on which registered
Common Stock, $0.00001 par value per shareENPHNasdaq Global Market
Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).
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. 





Item 2.02. Results of Operations and Financial Condition.
On October 26, 2021, Enphase Energy, Inc. (the “Company”) issued a press release announcing the Company’s financial results for the third quarter ended September 30, 2021. A copy of the press release is furnished as Exhibit 99.1 to this report.
The information in Item 2.02 of this Form 8-K and the exhibit 99.1 attached hereto shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or subject to the liabilities of that Section or Sections 11 and 12(a)(2) of the Securities Act of 1933, as amended (the “Securities Act”), and shall not be incorporated by reference in any registration statement or other document filed under the Securities Act or the Exchange Act, whether made before or after the date hereof, regardless of any general incorporation language in such filings, except as shall be expressly set forth by specific reference in such a filing.

Item 9.01. Financial Statements and Exhibits.
(d)Exhibits. 
Exhibit NumberDescription




SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.
Date:October 26, 2021ENPHASE ENERGY, INC.
 By:/s/ Eric Branderiz
  Eric Branderiz
  Executive Vice President and Chief Financial Officer



Document

Exhibit 99.1
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Enphase Energy Reports Financial Results for the Third Quarter of 2021
FREMONT, Calif., Oct. 26, 2021 - Enphase Energy, Inc. (NASDAQ: ENPH), a global energy technology company and the world’s leading supplier of microinverter-based solar and battery systems, announced today financial results for the third quarter of 2021, which included the summary below from its President and CEO, Badri Kothandaraman.
We reported record quarterly revenue of $351.5 million in the third quarter of 2021, along with 40.8% for non-GAAP gross margin. We shipped approximately 2,599,575 microinverters, or 913 megawatts DC, and 65 megawatt hours of Enphase Storage systems.
Financial highlights for the third quarter of 2021 are listed below.
Record revenue of $351.5 million
GAAP gross margin of 39.9%; non-GAAP gross margin of 40.8%
GAAP operating income of $37.4 million; non-GAAP operating income of $85.9 million
GAAP net income of $21.8 million, non-GAAP net income of $84.2 million
GAAP diluted earnings per share of $0.15; non-GAAP diluted earnings per share of $0.60
Cash flow from operations of $113.4 million
Ending cash, cash equivalents and marketable securities balance of $1.4 billion
Our revenue and earnings for the third quarter of 2021 are provided below, compared with those of the prior quarter and the year ago quarter:
(In thousands, except per share data and percentages)
GAAPNon-GAAP
Q3 2021Q2 2021Q3 2020Q3 2021Q2 2021Q3 2020
Revenue$351,519 $316,057 $178,503 $351,519 $316,057 $178,503 
Gross margin39.9 %40.4 %53.2 %40.8 %40.8 %41.0 %
Operating expenses$103,007 $68,401 $43,222 $57,341 $51,696 $29,571 
Operating income$37,351 $59,400 $51,759 $85,932 $77,165 $43,675 
Net income$21,809 $39,351 $39,362 $84,157 $74,676 $41,760 
Basic EPS$0.16 $0.29 $0.31 $0.62 $0.55 $0.33 
Diluted EPS$0.15 $0.28 $0.28 $0.60 $0.53 $0.30 
Total revenue increased 11% compared to the second quarter of 2021. We worked diligently to meet the surge in customer demand while successfully navigating global component supply constraints and logistics challenges.
Our non-GAAP gross margin was 40.8% in both the third and second quarter of 2021, as higher logistics and expedite costs were partially offset by a price increase on microinverters and cost management. Non-GAAP operating expenses increased to $57.3 million in the third quarter of 2021, compared to $51.7 million in the prior quarter, primarily due to additional investment in R&D and marketing programs, along with increased hiring. Non-GAAP operating income was $85.9 million in the third quarter of 2021, compared to $77.2 million in the second quarter of 2021.
We exited the third quarter of 2021 with $1.4 billion in cash, cash equivalents and marketable securities and generated $113.4 million in cash flow from operations. Capital expenditures were $12.7 million in the third quarter of 2021, compared to $16.4 million in the second quarter of 2021.
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Strong demand for our microinverter systems continued in the third quarter of 2021, while shipments of our Enphase Storage systems increased approximately 51%, compared to the second quarter of 2021. Our Load Control feature gained significant adoption during the third quarter. This feature provides homeowners the ability to conserve their energy consumption by shedding non-essential loads during an outage and thereby extending the backup duration. We also made several software and hardware updates to reduce commissioning times.
Product innovation remains at the cornerstone of our growth strategy. Yesterday, we announced our all-new, all-in-one Energy System with IQ8™ solar microinverters for customers in North America. Since the company’s inception, we invested in custom application specific integrated circuit (ASIC) chips for our microinverters, and today we see the payoff with a software-defined microinverter smart enough to form a microgrid. Many homeowners often assume that their solar systems will function if the sun is shining, even during a power outage. This has unfortunately not been true until today. Now, with IQ8 homeowners can realize the true promise of solar — to make and use their own power. IQ8 solar microinverters can provide Sunlight Backup during an outage, even without a battery.
In addition, we recently announced that our home energy systems will soon integrate with most leading models of home standby AC generators, providing enhanced performance and a glitch-free transition for homeowners during power outages. Homeowners can also monitor real-time power flow, start and stop their generator remotely, set quiet hours to prevent their generator from operating until their batteries fall below a designated threshold, and control it all with the Enphase app. The new feature functions without a generator automatic transfer switch and eliminates the power glitches that reset home electronic appliances when switching to generator power.
We continued to make excellent progress on digital transformation. Both of our recent acquisitions achieved record revenue in the third quarter of 2021. Enphase Montreal, which provides design and proposal software, added a significant number of new installers. We plan to release several new software features next year to improve the installer experience. Enphase Noida, which provides proposal and permitting services, also experienced a significant increase in customer demand and is focused on automating the creation of permit plan sets to further expand the installer base.
BUSINESS HIGHLIGHTS
On Aug. 26, 2021, Enphase Energy announced that it renewed its partnership with Grid Alternatives, a national nonprofit providing access to clean, affordable, renewable energy, transportation, and jobs to economic and environmental justice communities. Enphase will continue donating its industry-leading microinverter technology as part of the partnership to help GRID achieve its mission of accelerating a rapid, equitable transition to a world powered by renewable energy.
On Sept. 21, 2021, Enphase Energy announced its participation in Hawaiian Electric’s Battery Bonus grid services program. The program offers a new incentive for homeowners on the island of Oahu who install a new home battery. Existing Hawaiian Electric net energy metering (NEM) customers enrolling in the Battery Bonus program are also eligible to add up to 5 kW of new solar capacity to their roofs without losing their existing NEM rate agreement, resulting in even more savings.
On Sept. 27, 2021, Enphase Energy announced it had entered the Brazilian solar market with the introduction of its IQ7+™ microinverters. Enphase started shipping IQ7+ microinverters for residential and small commercial installers across Brazil starting in Oct. 2021.
On Sept. 29, 2021 Enphase Energy announced that it further strengthened its presence in the European residential solar market with its expansion into Italy. Enphase is providing the IQ7™ family of microinverters, Q-Relay™ safety devices, and Enphase Envoy™ communications gateways, which connect Enphase systems to the Enphase Enlighten™ monitoring platform to residential installers across Italy.
On Oct. 18, 2021 Enphase Energy announced that it started shipping its Encharge™ battery storage system to customers in Belgium, further expanding the product’s availability in the European solar market. The Encharge battery storage system is also currently available to customers in Germany and North America. The Encharge battery storage system offers configurations ranging from 3.5kWh to 42kWh, along with the option to upgrade and expand through the lifetime of the system.
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FOURTH QUARTER 2021 FINANCIAL OUTLOOK
For the fourth quarter of 2021, Enphase Energy estimates both GAAP and non-GAAP financial results as follows:
Revenue to be within a range of $390 million to $410 million, which includes shipments of 90 to 100 megawatt hours of Enphase Storage systems
GAAP gross margin to be within a range of 37.0% to 40.0%; non-GAAP gross margin to be within a range of 38.0% to 41.0%, excluding stock-based compensation expenses
GAAP operating expenses to be within a range of $119.0 million to $122.0 million, including $52.0 million estimated for stock-based compensation expenses and acquisition related costs and amortization
Non-GAAP operating expenses to be within a range of $67.0 million to $70.0 million, excluding $52.0 million estimated for stock-based compensation expenses and acquisition related costs and amortization. The non-GAAP estimates include increased investments in new products, software, and marketing, and a $3.6 million accrual for post combination expenses from prior acquisitions
Follow Enphase Online
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Watch Enphase videos on YouTube.
Use of Non-GAAP Financial Measures
The Company has presented certain non-GAAP financial measures in this press release. Generally, a non-GAAP financial measure is a numerical measure of a company’s performance, financial position, or cash flows that either exclude or include amounts that are not normally excluded or included in the most directly comparable measure calculated and presented in accordance with generally accepted accounting principles in the United States of America, or GAAP. Reconciliation of each non-GAAP financial measure to the most directly comparable GAAP financial measure can be found in the accompanying tables to this press release. Non-GAAP financial measures presented by the Company include non-GAAP gross profit, gross margin, operating expenses, income from operations, net income and net income per share.
These non-GAAP financial measures do not reflect a comprehensive system of accounting, differ from GAAP measures with the same captions and may differ from non-GAAP financial measures with the same or similar captions that are used by other companies. In addition, these non-GAAP measures have limitations in that they do not reflect all of the amounts associated with the Company’s results of operations as determined in accordance with GAAP. As such, these non-GAAP measures should be considered as a supplement to, and not as a substitute for, or superior to, financial measures calculated in accordance with GAAP. The Company uses these non-GAAP financial measures to analyze its operating performance and future prospects, develop internal budgets and financial goals, and to facilitate period-to-period comparisons. The Company believes that these non-GAAP financial measures reflect an additional way of viewing aspects of its operations that, when viewed with its GAAP results, provide a more complete understanding of factors and trends affecting its business.
As presented in the “Reconciliation of Non-GAAP Financial Measures” tables in the accompanying press release, each of the non-GAAP financial measures excludes one or more of the following items for purposes of calculating non-GAAP financial measures to facilitate an evaluation of the Company’s current operating performance and a comparison to its past operating performance:
Stock-based compensation expense. The Company excludes stock-based compensation expense from its non-GAAP measures primarily because they are non-cash in nature. Moreover, the impact of this expense is significantly affected by the Company’s stock price at the time of an award over which management has limited to no control.
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Tariff refunds. This item represents approved tariff refunds, and interest income earned on those refunds, by the U.S. Customs and Border Protection that qualify for the tariff exclusion on Chinese imported 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. Approved refunds relate to tariffs previously paid from September 24, 2018 to March 31, 2020 and are excluded from the non-GAAP measures as the refunds are non-recurring in nature for tariff costs incurred in the past and are not reflective of the Company’s ongoing financial performance.
Acquisition related expenses and amortization. This item represents expenses incurred related to the Company’s business acquisitions, which are non-recurring in nature, and amortization of acquired intangible assets, which is a non-cash expense. Acquisition related expenses and amortization of acquired intangible assets are not reflective of the Company's ongoing financial performance.
Non-cash interest expense. This item consists primarily of amortization of debt issuance costs and accretion of debt discount because these expenses do not represent a cash outflow for the Company except in the period the financing was secured and such amortization expense is not reflective of the Company’s ongoing financial performance.
Loss on partial settlement of convertible notes. This item is reflected in other income (expense), net and represents (i) the difference between the carrying value and the fair value of the settled convertible notes and (ii) the inducement loss for the difference between the value of the shares issued to settle the convertible notes and the value of the shares that would have been issued under the original conversion terms with respect to the repurchased Notes due 2025, which is non-cash in nature and is not reflective of the Company’s ongoing financial performance.
Change in fair value of derivatives. This item is reflected in other income (expense), net and represents changes in fair value of the conversion option in the convertible notes due 2025, as well as the convertible note hedge and warrant transactions, which is non-cash in nature and is not reflective of the Company’s ongoing financial performance.
Non-GAAP income tax adjustment. This item represents the amount adjusted to the Company’s GAAP tax provision or benefit to present the non-GAAP tax amount based on cash tax expense and reserves.
Free cash flow. This item represents net cash flows from operating activities plus deemed repayment of convertible notes attributable to accreted debt discount reported in operating activities less purchases of property and equipment.
Conference Call Information
Enphase Energy will host a conference call for analysts and investors to discuss its third quarter 2021 results and fourth quarter 2021 business outlook today at 4:30 p.m. Eastern Time (1:30 p.m. Pacific Time). The call is open to the public by dialing (877) 644-1284; participant passcode 1167185. A live webcast of the conference call will also be accessible from the “Investor Relations” section of the Company’s website at investor.enphase.com. Following the webcast, an archived version will be available on the website for approximately one year. In addition, an audio replay of the conference call will be available by calling (855) 859-2056; participant passcode 1167185, beginning approximately one hour after the call.

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Forward-Looking Statements
This press release contains forward-looking statements, including statements related to Enphase Energy’s expectations as to future financial performance, expense levels, liquidity sources, the capabilities, advantages, features and performance of our technology and products, including the ability to simplify and reduce installation time, our business strategies and anticipated demand for and availability of our products, the impact to homeowners, and the capabilities and performance of our partners. These forward-looking statements are based on the Company’s current expectations and inherently involve significant risks and uncertainties. Enphase Energy’s actual results and the timing of events could differ materially from those anticipated in such forward-looking statements as a result of certain risks and uncertainties including those risks described in more detail in the Company’s most recent Annual Report on Form 10-K and other documents on file with the SEC and available on the SEC’s website at www.sec.gov. Enphase Energy undertakes no duty or obligation to update any forward-looking statements contained in this release as a result of new information, future events or changes in its expectations, except as required by law.
A copy of this press release can be found on the investor relations page of Enphase Energy’s website at investor.enphase.com.
About Enphase Energy, Inc.
Enphase Energy, a global energy technology company based in Fremont, CA, is the world's leading supplier of microinverter-based solar and battery systems that enable people to harness the sun to make, use, save, and sell their own power—and control it all with a smart mobile app. The company revolutionized the solar industry with its microinverter-based technology and builds all-in-one solar, battery, and software solutions. Enphase has shipped more than 39 million microinverters, and over 1.7 million Enphase-based systems have been deployed in more than 130 countries. For more information, visit www.enphase.com.
Enphase Energy, Enphase, the E logo, IQ8, IQ7+, IQ7, Q-Relay, Envoy, Enlighten, Encharge and other trademarks or service names are the trademarks of Enphase Energy, Inc.
Contact:
Karen Sagot
Enphase Energy, Inc.
Investor Relations
ir@enphaseenergy.com
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ENPHASE ENERGY, INC.
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS
(In thousands, except per share data)
(Unaudited)
Three Months EndedNine Months Ended
September 30,
2021
June 30,
2021
September 30,
2020
September 30,
2021
September 30,
2020
Net revenues$351,519 $316,057 $178,503 $969,330 $509,586 
Cost of revenues (1)211,161 188,256 83,522 578,222 285,543 
Gross profit140,358 127,801 94,981 391,108 224,043 
Operating expenses:
Research and development29,411 22,708 15,052 73,937 40,120 
Sales and marketing39,296 25,586 14,645 84,504 38,788 
General and administrative34,300 20,107 13,525 74,530 37,810 
Total operating expenses103,007 68,401 43,222 232,971 116,718 
Income from operations37,351 59,400 51,759 158,137 107,325 
Other income (expense), net
Interest income110 98 110 281 1,483 
Interest expense(12,628)(12,506)(5,993)(32,463)(15,100)
Other income (expense), net874 (633)(1,031)814 (1,302)
Loss on partial settlement of convertible notes (2)— (13)— (56,382)— 
Change in fair value of derivatives (3)— — — — (44,348)
Total other expense, net(11,644)(13,054)(6,914)(87,750)(59,267)
Income before income taxes25,707 46,346 44,845 70,387 48,058 
Income tax benefit (provision)(3,898)(6,995)(5,483)22,471 12,946 
Net income$21,809 $39,351 $39,362 $92,858 $61,004 
Net income per share:
Basic$0.16 $0.29 $0.31 $0.69 $0.49 
Diluted$0.15 $0.28 $0.28 $0.65 $0.44 
Shares used in per share calculation:
Basic134,721 135,094 126,109 133,719 125,084 
Diluted141,220 141,533 141,820 143,091 140,207 

(1)    We sought refunds totaling approximately $39 million plus accrued interest on tariffs previously paid from September 24, 2018 to March 31, 2020 for certain microinverters that qualify for the tariff exclusion on Chinese imported 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 refund request is subject to review and approval by the U.S. Customs and Border Protection; therefore, we have assessed the probable loss recovery in the three and nine months ended September 30, 2020 is equal to the $23.0 million approved refund requests available to us prior to issuance of the financial statements on October 27, 2020. As of both the three and nine months ended September 30, 2020, we have recorded $23.0 million as a reduction to cost of revenues in our condensed consolidated statements of operations as the approved refunds relate to paid tariffs previously recorded to cost of revenues, therefore, we recorded the corresponding approved tariff refunds as credits to cost of revenues in the three and nine months ended September 30, 2020.
(2)    Loss on partial settlement of convertible notes of less than $0.1 million for the three months ended June 30, 2021, primarily relates to the non-cash loss on partial settlement of $0.1 million aggregate principal amount of the Notes due 2025. Loss on partial settlement of convertible notes of $56.4 million for the nine months ended September 30, 2021 primarily relates to the $9.5 million non-cash loss on partial settlement of $87.1 million aggregate principal amount of the Notes due 2024, $9.5 million non-cash loss on partial settlement of $217.8 million aggregate principal amount of the Notes due 2025 and $37.5 million non-cash inducement loss incurred on repurchase of Notes due 2025.
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(3)    Change in fair value of derivatives of $44.3 million for the nine months ended September 30, 2020, represents changes in fair value of the conversion option in the Notes due 2025, as well as the convertible note hedge and warrant transactions. Initially, conversion of the Notes due 2025 would be settled solely in cash 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; therefore, the conversion option, convertible note hedge and warrant transactions were classified as derivatives that required marked-to-market accounting. 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 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 conversion option, convertible note hedge and warrant transactions were remeasured at fair value 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.

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ENPHASE ENERGY, INC.
CONDENSED CONSOLIDATED BALANCE SHEETS
(In thousands)
(Unaudited)
September 30,
2021
December 31,
2020
ASSETS
Current assets:
Cash and cash equivalents$885,546 $679,379 
Marketable securities508,577 — 
Accounts receivable, net273,012 182,165 
Inventory65,405 41,764 
Prepaid expenses and other assets35,541 29,756 
Total current assets1,768,081 933,064 
Property and equipment, net73,445 42,985 
Operating lease, right of use asset, net15,185 17,683 
Intangible assets, net43,146 28,808 
Goodwill61,038 24,783 
Other assets136,111 59,875 
Deferred tax assets, net133,158 92,904 
Total assets$2,230,164 $1,200,102 
LIABILITIES AND STOCKHOLDERS’ EQUITY
Current liabilities:
Accounts payable$92,213 $72,609 
Accrued liabilities139,243 76,542 
Deferred revenues, current59,232 47,665 
Warranty obligations, current16,728 11,260 
Debt, current86,039 325,967 
Total current liabilities393,455 534,043 
Long-term liabilities:
Deferred revenues, noncurrent177,249 125,473 
Warranty obligations, noncurrent50,784 34,653 
Other liabilities20,617 17,042 
Debt, noncurrent940,244 4,898 
Total liabilities1,582,349 716,109 
Total stockholders’ equity647,815 483,993 
Total liabilities and stockholders’ equity$2,230,164 $1,200,102 


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ENPHASE ENERGY, INC.
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
(In thousands)
(Unaudited)
Three Months EndedNine Months Ended
September 30,
2021
June 30,
2021
September 30,
2020
September 30,
2021
September 30,
2020
Cash flows from operating activities:
Net income$21,809 $39,351 $39,362 $92,858 $61,004 
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization8,313 7,596 4,765 21,467 12,750 
Provision for doubtful accounts179 257 69 450 254 
Loss on partial settlement of convertibles notes— 13 — 56,382 — 
Deemed repayment of convertible notes attributable to accreted debt discount— (6)— (15,585)— 
Non-cash interest expense12,430 12,307 5,422 31,893 13,516 
Change in fair value of debt securities(784)(932)— (3,153)— 
Stock-based compensation46,954 15,312 14,399 77,110 34,214 
Change in fair value of derivatives— — — — 44,348 
Deferred income taxes1,337 5,240 5,060 (28,790)(14,507)
Changes in operating assets and liabilities:
Accounts receivable5,462 (44,812)(32,633)(93,069)23,533 
Inventory(27,648)(2,880)(6,349)(23,640)(5,479)
Prepaid expenses and other assets(3,568)(10,154)(917)(18,762)(10,451)
Accounts payable, accrued and other liabilities (1)24,897 10,514 26,189 71,787 (9,200)
Warranty obligations7,574 5,385 5,872 21,599 6,681 
Deferred revenues16,399 28,469 6,262 64,308 (24,509)
Net cash provided by operating activities113,354 65,660 67,501 254,855 132,154 
Cash flows from investing activities:
Purchases of property and equipment(12,682)(16,428)(3,903)(39,050)(11,707)
Purchases of marketable securities(545,490)— — (545,490)— 
Maturities of marketable securities35,000 — — 35,000 — 
Investments in private companies(13,000)(20,000)— (58,000)— 
Business acquisitions, net of cash acquired— — — (55,239)— 
Purchase of intangible asset(250)— — (250)— 
Net cash used in investing activities(536,422)(36,428)(3,903)(663,029)(11,707)
Cash flows from financing activities:
Issuance of convertible notes, net of issuance costs— (949)— 1,188,439 312,420 
Purchase of convertible note hedges— — — (286,235)(89,056)
Sale of warrants— — — 220,800 71,552 
Principal payments and financing fees on debt— (344)(636)(1,422)(2,269)
Partial repurchase of convertible notes— (79)— (289,312)— 
Repurchase of common stock— (200,000)— (200,000)— 
Proceeds from exercise of equity awards and employee stock purchase plan42 3,428 (138)3,684 4,708 
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Three Months EndedNine Months Ended
September 30,
2021
June 30,
2021
September 30,
2020
September 30,
2021
September 30,
2020
Payment of withholding taxes related to net share settlement of equity awards(3,313)(7,813)(8,390)(20,311)(52,042)
Net cash provided by (used in) financing activities(3,271)(205,757)(9,164)615,643 245,313 
Effect of exchange rate changes on cash and cash equivalents(376)(224)104 (1,302)(77)
Net increase (decrease) in cash and cash equivalents(426,715)(176,749)54,538 206,167 365,683 
Cash, cash equivalents and restricted cash—Beginning of period1,312,261 1,489,010 607,254 679,379 296,109 
Cash and cash equivalents—End of period$885,546 $1,312,261 $661,792 $885,546 $661,792 

(1)    As of September 30, 2020, we have received $16.0 million of tariff refunds and accrued for $7.0 million tariff refunds that were approved, however, not yet received on or before September 30, 2020. As of both the three and nine months ended September 30, 2020, we have recorded $23.0 million as a reduction to cost of revenues in our condensed consolidated statements of operations as the approved refunds relate to paid tariffs previously recorded to cost of revenues, therefore, we recorded the corresponding approved tariff refunds as credits to cost of revenues in the current period. The tariff refund receivable of $7.0 million is recorded as a reduction of accounts payable to Flex Ltd. and affiliates (“Flex”), our manufacturing partner and the importer of record who will first receive the tariff refunds, on the condensed consolidated balance sheet as of September 30, 2020.
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ENPHASE ENERGY, INC.
RECONCILIATION OF NON-GAAP FINANCIAL MEASURES
(In thousands, except per share data and percentages)
(Unaudited)
Three Months EndedNine Months Ended
September 30,
2021
June 30,
2021
September 30,
2020
September 30,
2021
September 30,
2020
Gross profit (GAAP)
$140,358 $127,801 $94,981 $391,108 $224,043 
Stock-based compensation2,915 1,060 1,294 4,957 3,237 
Tariff refunds— — (23,029)— (23,029)
Gross profit (Non-GAAP)
$143,273 $128,861 $73,246 $396,065 $204,251 

Gross margin (GAAP)
39.9 %40.4 %53.2 %40.3 %44.0 %
Stock-based compensation0.9 %0.4 %0.7 %0.6 %0.6 %
Tariff refunds— %— %(12.9)%— %(4.5)%
Gross margin (Non-GAAP)
40.8 %40.8 %41.0 %40.9 %40.1 %

Operating expenses (GAAP)
$103,007 $68,401 $43,222 $232,971 $116,718 
Stock-based compensation (1)(44,039)(14,252)(13,105)(72,153)(30,977)
Acquisition related expenses and amortization(1,627)(2,453)(546)(8,082)(1,638)
Operating expenses (Non-GAAP)
$57,341 $51,696 $29,571 $152,736 $84,103 

(1) Includes stock-based compensation as follows:
Research and development
$10,999 $5,467 $4,248 $22,215 $9,430 
Sales and marketing
15,472 5,335 3,952 24,344 9,504 
General and administrative
17,568 3,450 4,905 25,594 12,043 
Total
$44,039 $14,252 $13,105 $72,153 $30,977 

Income from operations (GAAP)$37,351 $59,400 $51,759 $158,137 $107,325 
Stock-based compensation46,954 15,312 14,399 77,110 34,214 
Tariff refunds— — (23,029)— (23,029)
Acquisition related expenses and amortization1,627 2,453 546 8,082 1,638 
Income from operations (Non-GAAP)$85,932 $77,165 $43,675 $243,329 $120,148 

Net income (GAAP)$21,809 $39,351 $39,362 $92,858 $61,004 
Stock-based compensation46,954 15,312 14,399 77,110 34,214 
Tariff refunds— — (23,029)— (23,029)
Acquisition related expenses and amortization1,627 2,453 546 8,082 1,638 
Non-cash interest expense12,430 12,307 5,422 31,893 13,516 
Loss on partial settlement of convertible notes— 13 — 56,382 — 
Change in fair value of derivatives— — — — 44,348 
Non-GAAP income tax adjustment1,337 5,240 5,060 (28,790)(14,507)
Net income (Non-GAAP)$84,157 $74,676 $41,760 $237,535 $117,184 
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Three Months EndedNine Months Ended
September 30,
2021
June 30,
2021
September 30,
2020
September 30,
2021
September 30,
2020

Net income per share, basic (GAAP)$0.16 $0.29 $0.31 $0.69 $0.49 
Stock-based compensation0.35 0.11 0.12 0.58 0.28 
Tariff refunds— — (0.18)— (0.18)
Acquisition related expenses and amortization0.01 0.02 — 0.06 0.01 
Non-cash interest expense0.09 0.09 0.04 0.24 0.11 
Loss on partial settlement of convertible notes— — — 0.42 — 
Change in fair value of derivatives— — — — 0.35 
Non-GAAP income tax adjustment0.01 0.04 0.04 (0.21)(0.12)
Net income per share, basic (Non-GAAP)$0.62 $0.55 $0.33 $1.78 $0.94 
Shares used in basic per share calculation GAAP and Non-GAAP134,721 135,094 126,109 133,719 125,084 
Net income per share, diluted (GAAP)$0.15 $0.28 $0.28 $0.65 $0.44 
Stock-based compensation0.34 0.11 0.11 0.55 0.26 
Tariff refunds— — (0.17)— (0.17)
Acquisition related expenses and amortization0.01 0.02 — 0.06 0.01 
Non-cash interest expense0.09 0.09 0.04 0.23 0.10 
Loss on partial settlement of convertible notes— — — 0.40 — 
Change in fair value of derivatives— — — — $0.33 
Non-GAAP income tax adjustment0.01 0.03 0.04 (0.21)(0.11)
Net income per share, diluted (Non-GAAP) (2)$0.60 $0.53 $0.30 $1.68 $0.86 
Shares used in diluted per share calculation GAAP141,220 141,533 141,820 143,091 140,207 
Shares used in diluted per share calculation Non-GAAP (3)140,516 140,931 137,352 141,101 136,359 
Net cash provided by operating activities (GAAP)$113,354 $65,660 $67,501 $254,855 $132,154 
Purchases of property and equipment(12,682)(16,428)(3,903)(39,050)(11,707)
Deemed repayment of convertible notes due 2024 and notes due 2025 attributable to accreted debt discount— — 15,585 — 
Free cash flow (Non-GAAP)$100,672 $49,238 $63,598 $231,390 $120,447 

(2)    Calculation of non-GAAP diluted net income per share for the three months ended September 30, 2021, June 30, 2021 and September 30, 2020, as well as the nine months ended September 30, 2021 and 2020, excludes convertible notes due 2023 interest expense, net of tax of less than $0.1 million in each period from non-GAAP net income.
(3)    Effect of dilutive in-the-money portion of convertible senior notes and warrants are included in the GAAP weighted-average diluted shares in periods where the Company has GAAP net income. The Company excluded the in-the-money portion of convertible notes due 2024 totaling 46 thousand shares, 45 thousand shares and 4,468 thousand shares in the three months ended September 30, 2021, June 30, 2021 and September 30, 2020, respectively, and 1,014 thousand and 3,849 thousand shares for the nine months ended September 30, 2021, and 2020, respectively, from non-GAAP weighted-average diluted shares as the Company entered into convertible note hedge transactions that reduce potential dilution to the Company’s common stock upon any conversion of the notes due 2024. The Company excluded the in-the-money portion of convertible notes due 2025 totaling 658 thousand shares and 557 thousand shares in the three months ended September 30, 2021 and June 30, 2021, respectively, and 976 thousand shares for the nine months ended September 30, 2021, from non-GAAP weighted-average diluted shares as the Company entered into convertible note hedge transactions that reduce potential dilution to the Company’s common stock upon any conversion of the notes due 2025.
12