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 ~~September 30, 2021~~March 31, 2022

☐

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: 1-34392

PLUG POWER INC.

(Exact name of registrant as specified in its charter)



Delaware		22-3672377
(State or Other Jurisdiction of		(I.R.S. Employer
Incorporation or Organization)		Identification Number)

968 ALBANY SHAKER ROAD, LATHAM, NEW YORK 12110

(Address of Principal Executive Offices, including Zip Code)

(518) 782-7700

(Registrant’s telephone number, including area code)

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, par value $.01 per share	PLUG	The NASDAQ Capital 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, 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 ☒

The number of shares of common stock, par value of $0.01 per share, outstanding as of ~~November 8, 2021~~May 5, 2022 was ~~576,355,807.~~578,101,564.

Table of Contents

INDEX to FORM 10-Q

	Page

PART I. FINANCIAL INFORMATION

Item 1 – Interim Condensed Consolidated Financial Statements (Unaudited)	3

Condensed Consolidated Balance Sheets	3

Condensed Consolidated Statements of Operations	4

Condensed Consolidated Statements of Comprehensive Loss	5

Condensed Consolidated Statements of Stockholders’ Equity	6

Condensed Consolidated Statements of Cash Flows	7

Notes to Interim Condensed Consolidated Financial Statements	8

Item 2 – Management’s Discussion and Analysis of Financial Condition and Results of Operations	3330

Item 3 – Quantitative and Qualitative Disclosures About Market Risk	5945

Item 4 – Controls and Procedures	6045

PART II. OTHER INFORMATION

Item 1 – Legal Proceedings	6147

Item 1A – Risk Factors	6347

Item 2 – Unregistered Sales of Equity Securities and Use of Proceeds	6347

Item 3 – Defaults Upon Senior Securities	6347

Item 4 – Mine Safety Disclosures	6347

Item 5 – Other Information	6347

Item 6 – Exhibits	6448

Signatures	6549

Table of Contents

PART 1. FINANCIAL INFORMATION

Item 1 — Interim Financial Statements (Unaudited)

Plug Power Inc. and Subsidiaries

Condensed Consolidated Balance ~~Sheets~~Sheets

(In thousands, except share and per share amounts)

(Unaudited)

September 30,

December 31,

2021

2020
Assets

Current assets:

Cash and cash equivalents

$
3,371,962

$
1,312,404
Restricted cash

90,688

64,041
Available-for-sale securities, at fair value
(amortized cost $756,841 and allowance for credit losses of $0 at September 30, 2021)

752,766

—
Equity securities

147,649

—
Accounts receivable

132,370

43,041
Inventory

229,814

139,386
Prepaid expenses and other current assets

62,746

44,324
Total current assets

4,787,995

1,603,196

Restricted cash

390,542

257,839
Property, plant, and equipment, net

169,586

74,549
Right of use assets related to finance leases, net

22,039

5,724
Right of use assets related to operating leases, net

167,907

117,016
Equipment related to power purchase agreements and fuel delivered to customers, net

78,711

75,807
Goodwill

71,856

72,387
Intangible assets, net

37,644

39,251
Other assets

13,820

5,513
Total assets

$
5,740,100

$
2,251,282

Liabilities and Stockholders’ Equity

Current liabilities:

Accounts payable

$
68,378

$
50,198
Accrued expenses

52,645

46,083
Deferred revenue

35,463

23,275
Operating lease liabilities

23,284

14,314
Finance lease liabilities

2,758

903
Finance obligations

35,595

32,717
Current portion of long-term debt

23,491

25,389
Other current liabilities

28,329

29,487
Total current liabilities

269,943

222,366

Deferred revenue

63,402

32,944
Operating lease liabilities

139,400

99,624
Finance lease liabilities

17,027

4,493
Finance obligations

172,242

148,836
Convertible senior notes, net

192,320

85,640
Long-term debt

123,764

150,013
Other liabilities

55,113

40,447
Total liabilities

1,033,211

784,363

Stockholders’ equity:

Common stock, $0.01 par value per share; 1,500,000,000 shares authorized; Issued (including shares in treasury): 593,077,995 at September 30, 2021 and 473,977,469 at December 31, 2020

5,930

4,740
Additional paid-in capital

6,978,454

3,446,650
Accumulated other comprehensive (loss) gain

(2,338)

2,451
Accumulated deficit

(2,203,989)

(1,946,488)
Less common stock in treasury: 17,032,648 at September 30, 2021 and 15,926,068 at December 31, 2020

(71,168)

(40,434)
Total stockholders’ equity

4,706,889

1,466,919
Total liabilities and stockholders’ equity

$
5,740,100

$
2,251,282


	March 31,		December 31,
	2022		2021
Assets
Current assets:
Cash and cash equivalents	$	2,495,614	$	2,481,269
Restricted cash		140,117		118,633
Available-for-sale securities, at fair value (amortized cost $816,976 and allowance for credit losses of $0 at March 31, 2022 and amortized cost $1,242,933 and allowance for credit losses of $0 at December 31, 2021)		799,228		1,240,265
Equity securities		147,826		147,995
Accounts receivable		57,322		92,675
Inventory		333,379		269,163
Contract assets		38,645		38,637
Prepaid expenses and other current assets		87,763		59,888
Total current assets		4,099,894		4,448,525

Restricted cash		542,851		532,292
Property, plant, and equipment, net		324,653		255,623
Right of use assets related to finance leases, net		40,068		32,494
Right of use assets related to operating leases, net		229,508		212,537
Equipment related to power purchase agreements and fuel delivered to customers, net		77,559		72,902
Contract assets		68		120
Goodwill		232,031		220,436
Intangible assets, net		212,407		158,208
Investments in non-consolidated entities and non-marketable equity securities		41,312		12,892
Other assets		3,454		4,047
Total assets	$	5,803,805	$	5,950,076

Liabilities and Stockholders’ Equity
Current liabilities:
Accounts payable	$	78,711	$	92,307
Accrued expenses		64,970		79,237
Deferred revenue and other contract liabilities		92,682		116,377
Operating lease liabilities		33,540		30,822
Finance lease liabilities		5,654		4,718
Finance obligations		44,337		42,040
Current portion of long-term debt		4,155		15,252
Loss accrual for service contracts and other current liabilities		34,282		39,800
Total current liabilities		358,331		420,553

Deferred revenue and other contract liabilities		62,503		66,713
Operating lease liabilities		186,151		175,635
Finance lease liabilities		30,520		24,611
Finance obligations		215,887		211,644
Convertible senior notes, net		192,949		192,633
Long-term debt		104,990		112,794
Loss accrual for service contracts and other liabilities		176,242		139,797
Total liabilities		1,327,573		1,344,380

Stockholders’ equity:
Common stock, $0.01 par value per share; 1,500,000,000 shares authorized; Issued (including shares in treasury): 595,209,356 at March 31, 2022 and 594,729,610 at December 31, 2021		5,952		5,947
Additional paid-in capital		7,116,125		7,070,710
Accumulated other comprehensive loss		(18,462)		(1,532)
Accumulated deficit		(2,553,392)		(2,396,903)
Less common stock in treasury: 17,146,337 at March 31, 2022 and 17,074,710 at December 31, 2021		(73,991)		(72,526)
Total stockholders’ equity		4,476,232		4,605,696
Total liabilities and stockholders’ equity	$	5,803,805	$	5,950,076

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

Table of Contents

Plug Power Inc. and Subsidiaries

Condensed Consolidated Statements of Operations

(In thousands, except share and per share amounts)

(Unaudited)


	Three Months Ended				Nine Months Ended				Three Months Ended
	September 30,				September 30,				March 31,
	2021		2020		2021		2020		2022		2021
Net revenue:
Sales of fuel cell systems and related infrastructure	$	115,999	$	83,662	$	262,049	$	151,876
Sales of fuel cell systems, related infrastructure and equipment									$	108,847	$	46,772
Services performed on fuel cell systems and related infrastructure		6,677		6,829		18,397		19,586		8,240		6,045
Power Purchase Agreements		9,321		6,629		25,508		19,629
Fuel delivered to customers		11,556		9,831		33,804		24,536
Power purchase agreements										10,037		7,826
Fuel delivered to customers and related equipment										13,429		11,127
Other		369		97		679		235		251		188
Net revenue		143,922		107,048		340,437		215,862		140,804		71,958
Cost of revenue:
Sales of fuel cell systems and related infrastructure		89,235		69,428		198,122		117,290
Sales of fuel cell systems, related infrastructure and equipment										88,828		28,974
Services performed on fuel cell systems and related infrastructure		18,697		9,180		47,258		27,300		13,875		13,086
Provision for loss contracts related to service		7,462		25,147		15,641		25,948		2,048		1,485
Power Purchase Agreements		31,199		14,744		71,776		44,019
Fuel delivered to customers		27,857		17,002		90,331		39,332
Power purchase agreements										31,753		18,343
Fuel delivered to customers and related equipment										39,272		22,143
Other		550		131		856		275		377		98
Total cost of revenue		175,000		135,632		423,984		254,164		176,153		84,129

Gross loss		(31,078)		(28,584)		(83,547)		(38,302)		(35,349)		(12,171)

Operating expenses:
Research and development		16,634		7,386		37,623		17,033		20,461		9,742
Selling, general and administrative		42,421		17,210		106,652		49,963		80,890		25,579
Change in fair value of contingent consideration		8,530		1,130		8,760		1,130		2,461		790
Total operating expenses		67,585		25,726		153,035		68,126		103,812		36,111

Operating loss		(98,663)		(54,310)		(236,582)		(106,428)		(139,161)		(48,282)

Interest, net		(5,361)		(17,248)		(27,895)		(42,407)
Interest income										2,054		68
Interest expense										(8,648)		(12,334)
Other expense, net		(50)		(303)		(318)		(452)		(1,309)		(198)
Realized loss on investments, net		(254)		—		(236)		—		(847)		—
Change in fair value of equity securities		(607)		—		(284)		—		(5,159)		—
Gain on extinguishment of debt		—		—		—		13,222
Loss on equity method investments		(1,736)		—		(1,736)		—		(3,833)		—

Loss before income taxes	$	(106,671)	$	(71,861)	$	(267,051)	$	(136,065)	$	(156,903)	$	(60,746)

Income tax benefit		—		6,644		—		24,015		(414)		—

Net loss attributable to the Company	$	(106,671)	$	(65,217)	$	(267,051)	$	(112,050)

Preferred stock dividends declared		—		—		—		(26)

Net loss attributable to common stockholders	$	(106,671)	$	(65,217)	$	(267,051)	$	(112,076)
Net loss									$	(156,489)	$	(60,746)

Net loss per share:
Basic and diluted	$	(0.19)	$	(0.18)	$	(0.48)	$	(0.34)	$	(0.27)	$	(0.12)

Weighted average number of common stock outstanding		574,520,806		371,010,544		551,894,779		330,949,265		577,866,983		513,458,287

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

Table of Contents

Plug Power Inc. and Subsidiaries

Condensed Consolidated Statements of Comprehensive Loss

(In thousands)

(Unaudited)


	Three months ended				Nine months ended				Three months ended
	September 30,				September 30,				March 31,
	2021		2020		2021		2020		2022		2021

Net loss attributable to the Company	$	(106,671)	$	(65,217)	$	(267,051)	$	(112,050)
Other comprehensive gain (loss):
Foreign currency translation (loss) gain		(172)		687		(714)		558
Change in net unrealized loss on available-for-sale securities		(2,200)		—		(4,075)		—
Net loss									$	(156,489)	$	(60,746)
Other comprehensive loss:
Foreign currency translation loss										(1,850)		(1,123)
(Loss) gain in net unrealized loss on available-for-sale securities										(15,080)		92
Comprehensive loss attributable to the Company	$	(109,043)	$	(64,530)	$	(271,840)	$	(111,492)	$	(173,419)	$	(61,777)

Preferred stock dividends declared		—		—		—		(26)
Comprehensive loss attributable to common stockholders	$	(109,043)	$	(64,530)	$	(271,840)	$	(111,518)

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

Table of Contents

Plug Power Inc. and Subsidiaries

Condensed Consolidated Statements of Stockholders’ Equity

(In thousands, except share amounts)

(Unaudited)


						Accumulated														Accumulated
				Additional		Other							Total					Additional		Other							Total
	Common Stock			Paid-in		Comprehensive		Treasury Stock			Accumulated		Stockholders’		Common Stock			Paid-in		Comprehensive		Treasury Stock			Accumulated		Stockholders’
	Shares	Amount		Capital		Income		Shares	Amount		Deficit		Equity		Shares	Amount		Capital		Income		Shares	Amount		Deficit		Equity
December 31, 2021															594,729,610	$	5,947	$	7,070,710	$	(1,532)	17,074,710	$	(72,526)	$	(2,396,903)	$	4,605,696
Net loss															—		—		—		—	—		—		(156,489)		(156,489)
Other comprehensive loss															—		—		—		(16,930)	—		—		—		(16,930)
Stock-based compensation															226,221		2		43,384		—	—		—		—		43,386
Stock option exercises and issuance of common stock under restricted stock awards															253,525		3		288		—	—		—		—		291
Treasury stock acquired from employees upon exercise of stock options															—		—		—		—	71,627		(1,465)		—		(1,465)
Provision for common stock warrants															—		—		1,743		—	—		—		—		1,743
March 31, 2022															595,209,356	$	5,952	$	7,116,125	$	(18,462)	17,146,337	$	(73,991)	$	(2,553,392)	$	4,476,232

December 31, 2020	473,977,469	$	4,740	$	3,446,650	$	2,451	15,926,068	$	(40,434)	$	(1,946,488)	$	1,466,919	473,977,469	$	4,740	$	3,446,650	$	2,451	15,926,068	$	(40,434)	$	(1,946,488)	$	1,466,919
Net loss attributable to the Company	—		—		—		—	—		—		(267,051)		(267,051)
Net loss															—		—		—		—	—		—		(60,746)		(60,746)
Cumulative impact of Accounting Standards Update 2020-06 adoption	—		—		(130,185)		—	—		—		9,550		(120,635)	—		—		(130,249)		—	—		—		9,550		(120,699)
Other comprehensive loss	—		—		—		(4,789)	—		—		—		(4,789)
Other comprehensive gain															—		—		—		(1,031)	—		—		—		(1,031)
Stock-based compensation	61,408		—		34,813		—	—		—		—		34,813	15,166		—		9,695		—	—		—		—		9,695
Public offerings, common stock, net	32,200,000		322		2,022,871		—	—		—		—		2,023,193	32,200,000		322		2,022,866		—	—		—		—		2,023,188
Private offerings, common stock, net	54,966,188		549		1,564,088		—	—		—		—		1,564,637	54,966,188		549		1,564,088		—	—		—		—		1,564,637
Stock option exercises	4,576,102		46		5,270		—	—		—		—		5,316	1,758,375		18		4,691		—	—		—		—		4,709
Stock exchanged for tax withholding	—		—		—		—	1,106,580		(30,734)		—		(30,734)
Exercise of warrants	24,210,984		242		15,203		—	—		—		—		15,445	16,308,978		163		15,282		—	—		—		—		15,445
Provision for common stock warrants	—		—		4,430		—	—		—		—		4,430	—		—		1,601		—	—		—		—		1,601
Conversion of 3.75% Convertible Senior Notes	3,016,036		30		15,155		—	—		—		—		15,185
Conversion of 5.5% Convertible Senior Notes	69,808		1		159		—	—		—		—		160
September 30, 2021	593,077,995	$	5,930	$	6,978,454	$	(2,338)	17,032,648	$	(71,168)	$	(2,203,989)	$	4,706,889

December 31, 2019	318,637,560	$	3,186	$	1,506,953	$	1,288	15,259,045	$	(31,216)	$	(1,350,307)	$	129,904
Net loss attributable to the Company	—		—		—		—	—		—		(112,050)		(112,050)
Other comprehensive gain	—		—		—		558	—		—		—		558
Stock-based compensation	402,003		4		9,254		—	—		—		—		9,258
Stock dividend	5,156		—		20		—	—		—		(20)		—
Public offerings, net	35,276,250		353		344,045			—		—		—		344,398
Stock option exercises	13,736,265		137		32,416		—	—		—		—		32,553
Stock exchanged for tax withholding	—		—		—		—	667,023		(9,218)		—		(9,218)
Equity component of convertible senior notes, net of issuance costs and income tax benefit	—		—		108,479		—	—		—		—		108,479
Purchase of capped calls	—		—		(16,253)		—	—		—		—		(16,253)
Termination of capped calls	—		—		24,158		—	—		—		—		24,158
Provision for common stock warrants	—		—		32,529		—	—		—		—		32,529
Accretion of discount, preferred stock	—		—		(29)		—	—		—		—		(29)
Conversion of preferred stock	2,998,526		30		1,148		—	—		—		—		1,178
Conversion of 7.5% Convertible Senior Note	16,000,000		160		42,713		—	—		—		—		42,873	3,016,036		30		15,155		—	—		—		—		15,185
Repurchase of 5.5% Convertible Senior Notes, net of income tax benefit	9,409,591		94		(51,840)		—	—		—		—		(51,746)	69,808		1		159		—	—		—		—		160
Shares issued for acquisitions	9,658,465		97		49,576		—	—		—		—		49,673
September 30, 2020	406,123,816	$	4,061	$	2,083,169	$	1,846	15,926,068	$	(40,434)	$	(1,462,377)	$	586,265
March 31, 2021															582,312,020	$	5,823	$	6,949,938	$	1,420	15,926,068	$	(40,434)	$	(1,997,684)	$	4,919,063

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

Table of Contents

Plug Power Inc. and Subsidiaries

Condensed Consolidated Statements of Cash Flows

(In thousands)

(Unaudited)


	Nine months ended				Three months ended March 31,
	September 30,				2022		2021
	2021		2020
Operating Activities
Net loss attributable to the Company	$	(267,051)	$	(112,050)
Operating activities
Net loss					$	(156,489)	$	(60,746)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation of long-lived assets		15,903		9,860		2,842		5,514
Amortization of intangible assets		1,095		835		5,190		364
Stock-based compensation		34,813		9,258		43,386		9,695
Gain on extinguishment of debt		—		(13,222)
Amortization of debt issuance costs and discount on convertible senior notes		2,371		12,183		661		1,092
Provision for common stock warrants		4,746		25,198		1,852		1,705
Income tax benefit		—		(24,015)
Impairment of long-lived assets		1,329		—
Loss on service contracts		9,586		25,110
Deferred income tax expense						(414)		—
Benefit on service contracts						(7,297)		(361)
Fair value adjustment to contingent consideration		(8,760)		1,130		(2,461)		(790)
Net realized loss on investments		236		—		847		—
Amortization of premium on available-for-sale securities						2,290		—
Lease origination costs		(7,889)		—		(1,613)		—
Change in fair value for equity securities		284		—		5,159		—
Loss on equity method investments		1,736		—		3,833		—
Changes in operating assets and liabilities that provide (use) cash:
Accounts receivable		(89,329)		(86,056)		36,170		109
Inventory		(90,428)		(57,615)		(63,702)		(46,791)
Prepaid expenses, and other assets		(28,465)		(4,956)
Contract assets						44		—
Prepaid expenses and other assets						(27,107)		(4,641)
Accounts payable, accrued expenses, and other liabilities		28,992		41,125		(25,096)		(23,516)
Deferred revenue		42,330		16,709
Deferred revenue and other contract liabilities						(28,014)		1,267
Net cash used in operating activities		(348,501)		(156,506)		(209,919)		(117,099)

Investing Activities
Investing activities
Purchases of property, plant and equipment		(91,384)		(11,265)		(78,394)		(9,879)
Purchase of intangible assets		—		(1,638)
Purchases of equipment related to power purchase agreements and equipment related to fuel delivered to customers		(17,900)		(13,699)		(6,796)		(3,332)
Purchase of available-for-sale securities		(1,862,951)		—		(114,173)		(405,168)
Proceeds from sales and maturities of available-for-sale securities		1,105,874		—
Proceeds from sales of equity securities		21,780		—
Proceeds from sales of available-for-sale securities						469,563		—
Proceeds from maturities of available-for-sale securities						67,430		—
Purchase of equity securities		(169,713)		—		(4,990)		—
Net cash paid for acquisition		—		(45,113)
Net cash used in investing activities		(1,014,294)		(71,715)
Net cash paid for acquisitions						(26,473)		—
Cash paid for non-consolidated entities and non-marketable equity securities						(32,253)		—
Net cash provided by (used in) investing activities						273,914		(418,379)

Financing Activities
Financing activities
Proceeds from exercise of warrants, net of transaction costs		15,445		—		—		15,445
Payments of contingent consideration						(2,667)		—
Proceeds from public and private offerings, net of transaction costs		3,587,830		344,398		—		3,587,825
Payments of tax withholding on behalf of employees for net stock settlement of stock-based compensation		(30,734)		(9,218)		(1,465)		—
Proceeds from exercise of stock options		5,316		32,553		291		4,709
Proceeds from issuance of convertible senior notes, net		—		205,098
Repurchase of convertible senior notes		—		(90,238)
Purchase of capped calls and common stock forward		—		(16,253)
Proceeds from termination of capped calls		—		24,158
Principal payments on long-term debt		(29,129)		(27,845)		(19,246)		(14,461)
Proceeds from long-term debt, net		—		99,000
Repayments of finance obligations and finance leases		(20,413)		(19,038)
Proceeds from finance obligations		53,447		47,568		17,273		10,661
Net cash provided by financing activities		3,581,762		590,183
Principal repayments of finance obligations and finance leases						(12,427)		(9,806)
Net cash (used in) provided by financing activities						(18,241)		3,594,373
Effect of exchange rate changes on cash		(59)		(90)		634		(51)
Increase in cash, cash equivalents and restricted cash		2,218,908		361,872
Increase in cash and cash equivalents						14,345		3,036,663
Increase in restricted cash						32,043		22,181
Cash, cash equivalents, and restricted cash beginning of period		1,634,284		369,500		3,132,194		1,634,284
Cash, cash equivalents, and restricted cash end of period	$	3,853,192	$	731,372	$	3,178,582	$	4,693,128

Supplemental disclosure of cash flow information
Cash paid for interest, net capitalized interest of $2.6 million	$	10,341	$	16,975
Cash paid for interest, net capitalized interest of $4.3 million					$	5,731	$	2,608

Summary of non-cash activity
Recognition of right of use asset - finance leases	$	16,961	$	—	$	8,070	$	5,292
Recognition of right of use asset - operating leases		65,083		25,857		20,070		12,720
Conversion of preferred stock to common stock		—		43,058
Net tangible assets (liabilities) acquired (assumed) in a business combination						56,929		—
Intangible assets acquired in a business combination						60,522		—
Conversion of convertible senior notes to common stock		15,345		—		—		15,345
Net transfers between inventory and long-lived assets						489		—
Accrued purchase of fixed assets, cash to be paid in subsequent period		8,832		—		6,707		—

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

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1. Nature of Operations

Plug Power Inc. (the “Company,” “Plug,” “we” or “our”) is facilitating the paradigm shift to an increasingly electrified world by innovating cutting-edge hydrogen and fuel cell solutions. ~~In our core business,~~While we ~~provide and~~ continue to develop ~~commercially viable~~commercially-viable hydrogen and fuel cell product solutions to replace lead-acid and lithium batteries in electric material handling vehicles and industrial trucks for some of the world’s largest retail-distribution and manufacturing ~~businesses.~~businesses, we have expanded our offerings to support a variety of commercial operations that can be powered with green hydrogen. We also provide electrolyzers that allow customers — such as refineries, producers of chemicals, steel and fertilizer and commercial refueling stations — to generate hydrogen on-site. Additionally, we intend for our electrolyzers to be used to generate green hydrogen within Plug’s own plants that will then be sold to customers. We are focusing our efforts on industrial mobility applications, including electric forklifts and electric industrial vehicles, at multi-shift high volume manufacturing and high throughput distribution sites where we believe our products and services provide a unique combination of productivity, flexibility, and environmental benefits. Additionally, we manufacture and sell fuel cell products to replace batteries and diesel generators in stationary ~~backup~~back-up power ~~applications. These products have proven valuable with~~applications for telecommunications, transportation, and utility ~~customers as robust, reliable,~~customers. Plug supports these markets with an ecosystem of integrated products that make, transport, handle, dispense and ~~sustainable power solutions.~~use hydrogen.

~~Our current products and services include:~~

GenDrive: GenDrive is our hydrogen fueled Proton Exchange Membrane (“PEM”) fuel cell system providing power to material handling electric vehicles, including class 1, 2, 3 and 6 electric forklifts, Automated Guided Vehicles (“AGVs”) and ground support equipment;

~~GenFuel: GenFuel is our liquid hydrogen fueling delivery, generation, storage, and dispensing system;~~

GenCare: GenCare is our ongoing ‘internet of things’-based maintenance and on-site service program for GenDrive fuel cell systems, GenSure fuel cell systems, GenFuel hydrogen storage and dispensing products and ProGen fuel cell engines;

GenSure: GenSure is our stationary fuel cell solution providing scalable, modular PEM fuel cell power to support the backup and grid-support power requirements of the telecommunications, transportation, and utility sectors; GenSure High Power Fuel Cell Platform will support large scale stationary power and data center markets;

GenKey: GenKey is our vertically integrated “turn-key” solution combining either GenDrive or GenSure fuel cell power with GenFuel fuel and GenCare aftermarket service, offering complete simplicity to customers transitioning to fuel cell power;

ProGen: ProGen is our fuel cell stack and engine technology currently used globally in mobility and stationary fuel cell systems, and as engines in electric delivery vans. This includes the Plug Power membrane electrode assembly (“MEA”), a critical component of the fuel cell stack used in zero-emission fuel cell electric vehicle engines; and

~~GenFuel Electrolyzers:~~ ~~GenFuel electrolyzers are modular, scalable hydrogen generators optimized for clean hydrogen production.~~ ~~Electrolyzers generate hydrogen from water using electricity and a special membrane and “green” hydrogen is generated by using renewable energy inputs, such as solar or wind power.~~

We provide our products worldwide through our direct product sales force, and by leveraging relationships with original equipment manufacturers (“OEMs”) and their dealer networks. Plug Power is targeting Asia and Europe for expansion in adoption. Europe has rolled out ambitious targets for the hydrogen economy and Plug Power is executing on its strategy to become one of the European leaders. This includes a targeted account strategy for material handling as well as securing strategic partnerships with European OEMs, energy companies, utility leaders and accelerating our electrolyzer business. We manufacture our commercially viable products in Latham, New York, Rochester, New York and Spokane, Washington and support liquid hydrogen generation and logistics in Charleston, Tennessee.

Our wholly-owned subsidiary, Plug Power France, created a joint venture with Renault SAS (“Renault”) named HyVia, a French société par actions simplifiée (“HyVia”) in the second quarter 2021. HyVia plans to manufacture and sell fuel cell powered electric light commercial vehicles (“FCELCVs”) and to supply hydrogen fuel and fueling stations to support the FCE-LCV market, in each case primarily in Europe. HyVia is owned 50% by Plug Power France and 50% by Renault.

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2. Summary of Significant Accounting Policies

~~Restatement~~

As previously disclosed in the Explanatory Note to the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2020 (the “2020 10-K”), the Company restated its previously issued audited consolidated financial statements as of and for the years ended December 31, 2019 and 2018 and its unaudited interim condensed consolidated financial statements as of and for each of the quarterly periods ended March 31, 2020 and 2019, June 30, 2020 and 2019, September 30, 2020 and 2019 and December 31, 2019.

Previously filed annual reports on Form 10-K and quarterly reports on Form 10-Q for the periods affected by the restatement have not been amended. Accordingly, investors should not rely upon the Company’s previously released financial statements for these periods and any earnings releases or other communications relating to these periods, and, for these periods, investors should rely solely on the financial statements and other financial data for the relevant periods included in the 2020 10-K. Commencing with our quarterly report on Form 10-Q for the quarterly period ended March 31, 2021, we are including in our quarterly reports for fiscal 2021 restated results for the corresponding interim periods of fiscal 2020.

Principles of Consolidation

The unaudited interim condensed consolidated financial statements include the financial statements of the Company and its wholly-owned subsidiaries. Intercompany balances and transactions have been eliminated in consolidation. In addition, we include our share of the results of HyVia, AccionaPlug S.L., and HALO Hydrogen Co, Ltd., using the equity method based on our economic ownership interest and our ability to exercise significant influence over the operating and financial decisions of ~~HyVia.~~HyVia, AccionaPlug S.L., and HALO Hydrogen Co, Ltd.

Interim Financial Statements

The accompanying unaudited interim condensed consolidated financial statements have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”). In the opinion of management, all adjustments, which consist solely of normal recurring adjustments, necessary to present fairly, in accordance with U.S. generally accepted accounting principles (“GAAP”), the financial position, results of operations and cash flows for all periods presented, have been made. The results of operations for the interim periods presented are not necessarily indicative of the results that may be expected for the full year.

Certain information and footnote disclosures normally included in annual consolidated financial statements prepared in accordance with GAAP have been condensed or omitted. These unaudited interim condensed consolidated financial statements should be read in conjunction with the Company’s audited consolidated financial statements and notes thereto included in the Company’s ~~2020 10-K.~~Annual Report on Form 10-K for the fiscal year ended December 31, 2021 (the “2021 Form 10-K”).

The information presented in the accompanying unaudited interim condensed consolidated balance sheets as of December 31, ~~2020~~2021 has been derived from the Company’s December 31, ~~2020~~2021 audited consolidated financial statements.

~~Certain amounts in the prior period~~The unaudited condensed consolidated financial statements ~~have been reclassified to conform to the presentation of the current period condensed consolidated financial statements.~~contained herein should be read in conjunction with our 2021 Form 10-K.

~~There have been no changes in our accounting policies from those reported in our 2020 10-K, except for the adoption of~~ ~~Accounting Standards Update (“ASU”)~~ ~~2020-06,~~ ~~Debt—Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging—Contracts in Entity’s Own Equity (Subtopic 815-40),~~ ~~as described in the~~ ~~Recently Adopted Accounting Guidance~~ ~~section. We have also expanded our accounting policy relating to cash equivalents, available-for-sale securities, equity securities, and stock-based compensation as follows:~~

~~Cash Equivalents~~

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The Company considers all highly-liquid debt securities with original maturities of three months or less to be cash equivalents. At September 30, 2021, cash equivalents consisted of commercial paper and U.S. Treasury securities with original maturities of three months or less, and money market funds. Due to their short-term nature, the carrying amounts reported in the unaudited interim condensed consolidated balance sheets approximate the fair value of cash and cash equivalents.

~~Available-for-sale securities~~

Available-for-sale securities is comprised of commercial paper with original maturities greater than three months, U.S. Treasury securities, certificates of deposit and corporate bonds. We consider these securities to be ~~available for use in our current year operations, and therefore classify them as current even if we do not dispose of the securities in the following year.~~

Available-for-sale securities are recorded at fair value as of each balance sheet date. As of each balance sheet date, unrealized gains and losses, with the exception of credit related losses, are recorded to accumulated other comprehensive income (loss). Any credit related losses are recognized as a credit loss allowance on the balance sheet with a corresponding adjustment to operations. Realized gains and losses are due to the sale and maturity of securities classified as available-for-sale and represent the net gain (loss) from accumulated other comprehensive income (loss) reclassifications for previously unrealized net gains on available-for-sale debt securities.

~~Equity securities~~

Equity securities are comprised of fixed income and equity market index mutual funds. Equity securities are valued at fair value with changes in the fair value recognized in our unaudited interim condensed consolidated statement of operations. We consider these securities to be ~~available for use in our current year operations, and therefore classify them as current even if we do not dispose of the securities in the following year.~~

~~Stock-based compensation~~

Stock-based compensation represents the cost related to stock-based awards granted to employees and directors. The Company measures stock-based compensation cost at grant date, based on the fair value of the award estimated under the current provisions of Accounting Standards Codification (“ASC”) Topic 718, Compensation - Stock Compensation. For service stock options and restricted stock awards, the Company estimates the fair value of stock-based awards using a Black-Scholes valuation model and recognizes the cost as expense on a straight-line basis over the option’s requisite service period.

In September 2021, the Company also issued performance stock option awards that include a market condition. The grant date fair value of performance stock options is estimated using a Monte Carlo simulation model and the cost is recognized using the accelerated attribution method.

Stock-based compensation expense is recorded in cost of revenue associated with sales of fuel cell systems and related infrastructure, cost of revenue for services performed on fuel cell systems and related infrastructure, research and development expense and selling, general and administrative expenses in the consolidated statements of operations based on the employees’ respective function.

Recent Accounting Pronouncements

Recently Adopted Accounting Guidance

Other than the adoption of the accounting guidance mentioned in our ~~2020~~2021 Form 10-K, ~~and ASU 2020-06~~, there have been no other significant changes in our reported financial position or results of operations and cash flows resulting from the adoption of new accounting pronouncements.

~~Table of Contents~~

the impact of recognizing the equity component of the Company’s convertible notes at issuance and the subsequent accounting impact of additional interest expense from debt discount amortization. Future interest expense of the convertible notes will be lower as a result of adoption of this guidance and net loss per share will be computed using the if-converted method for convertible instruments. The cumulative effect of the accounting change upon adoption on January 1, 2021 increased the carrying amount of the 3.75% Convertible Senior Notes by $120.6 million, reduced accumulated deficit by $9.6 million and reduced additional paid-in capital by $130.2 million as of September 30, 2021.

Recent Accounting Guidance Not Yet Effective

All issued but not yet effective accounting and reporting standards as of ~~September 30, 2021~~March 31, 2022 are either not applicable to the Company or are not expected to have a material impact on the Company.

3. Acquisitions

Joule Processing LLC

On January 14, 2022, the Company acquired Joule Processing LLC (“Joule”), an engineered modular equipment, process design and procurement company founded in 2009.

The fair value of consideration paid by the Company in connection with the Joule acquisition was as follows (in thousands):


Cash	$	28,140
Contingent consideration		41,732
Total consideration	$	69,872

The contingent consideration represents the estimated fair value associated with earn-out payments of up to $130 million that the sellers are eligible to receive in cash or shares of the Company’s common stock (at the Company’s election). Of the total earnout consideration, $90 million is related to the achievement of certain financial performance and $40 million is related to the achievement of certain internal operational milestones.

The following table summarizes the preliminary allocation of the purchase price to the estimated fair value of the net assets acquired, excluding goodwill (in thousands):


Current assets	$	2,672
Property, plant and equipment		493
Right of use asset		182
Identifiable intangible assets		60,522
Lease liability		(374)
Current liabilities		(2,748)
Contract liability		(3,818)
Total net assets acquired, excluding goodwill	$	56,929

The preliminary allocation of the purchase price is still considered provisional due to the finalization of the valuation for the assets acquired and liabilities assumed in relation to the Joule acquisition. Therefore, the fair values of the assets acquired and liabilities assumed are subject to change as we obtain additional information for valuation assumptions such as market demand for Joule product lines to support forecasted revenue growth and the likelihood of achieving earnout milestones during the measurement period, which will not exceed 12 months from the date of acquisition.

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The fair value of the developed technology totaling $59.2 million included in the identifiable intangible assets was calculated using the multi-period excess earnings method (“MPEEM”) approach which is a variant of the income approach. The basic principle of the MPEEM approach is that a single asset, in isolation, is not capable of generating cash flow for an enterprise. Several assets are brought together and exploited to generate cash flow. Therefore, to determine cash flow from the developed technology over its useful life of 15 years, one must deduct the related expenses incurred for the exploitation of other assets used for the generation of overall cash flow. The fair value of the tradename totaling $0.8 million was calculated using the relief from royalty approach which is a variant of the income approach, and was assigned a useful life of four years. The fair value of the non-compete agreements was $0.5 million with a useful life of six years.

In addition to identifiable intangible assets, the fair value of acquired work in process and finished goods inventory, included in inventory, was estimated based on the estimated selling price less costs to be incurred and a market participant profit rate.

In connection with the acquisition, the Company recorded on its consolidated balance sheet a liability of $41.7 million representing the fair value of contingent consideration payable, and is recorded in the unaudited condensed consolidated balance sheet in the loss accrual for service contracts and other liabilities. The fair value of this contingent consideration was remeasured as of March 31, 2022, and there was 0 change for the three months ended March 31, 2022.

Included in the purchase price consideration are contingent earn-out payments as described above. Due to the nature of the earn-outs, a scenario based analysis using the probability of achieving the milestone expectations was used to determine the fair value of the contingent consideration. These fair value measurements were based on unobservable inputs and are considered to be level 3 financial instruments.

The goodwill was primarily attributed to the value of synergies created with the Company’s current and future offerings and the value of the assembled workforce. Goodwill and intangible assets are not deductible for income tax purposes. Goodwill associated with the Joule acquisition was calculated as follows (in thousands):


Consideration paid	$	28,140
Contingent consideration		41,732
Less: net assets acquired		(56,929)
Total goodwill recognized	$	12,943

The acquisition of Joule contributed $1.4 million to total consolidated revenue for the three months ended March 31, 2022. Joule results are monitored by the Company and as a result, the Company determined it impractical to report net loss for the Joule acquisition for the three months ended March 31, 2022.

Applied Cryo Technologies Acquisition

On November 22, 2021, the Company acquired 100% of the outstanding shares of Applied Cryo Technologies, Inc. (“Applied Cryo”). Applied Cryo is a manufacturer of engineered equipment servicing multiple applications, including cryogenic trailers and mobile storage equipment for the oil and gas markets and equipment for the distribution of liquified hydrogen, oxygen, argon, nitrogen and other cryogenic gases.

The fair value of consideration paid by the Company in connection with the Applied Cryo acquisition was as follows (in thousands):


Cash	$	98,559
Plug Power Inc. Common Stock		46,697
Contingent consideration		14,000
Settlement of preexisting relationship		2,837
Total consideration	$	162,093

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Included in the $98.6 million of cash consideration above, $5.0 million is consideration held by our paying agent in connection with the acquisition and is reported as restricted cash, with a corresponding accrued liability as of March 31, 2022 on the Company’s unaudited interim condensed consolidated balance sheet. We expect that this will be settled in 2022.

The contingent consideration represents the estimated fair value associated with earn-out payments of up to $30.0 million that the sellers are eligible to receive in cash or shares of the Company’s common stock (at the Company’s election). Of the total earnout consideration, $15.0 million is related to financial performance, and $15.0 million is related to internal operational milestones.

The following table summarizes the preliminary allocation of the purchase price to the estimated fair value of the net assets acquired, excluding goodwill (in thousands):


Cash	$	1,180
Accounts receivable		4,123
Inventory		24,655
Prepaid expenses and other assets		1,506
Property, plant and equipment		4,515
Right of use asset		2,788
Identifiable intangible assets		70,484
Lease liability		(2,672)
Accounts payable, accrued expenses and other liabilities		(8,206)
Deferred tax liability		(16,541)
Deferred revenue		(12,990)
Total net assets acquired, excluding goodwill	$	68,842

The preliminary allocation of the purchase price is still considered provisional due to the tradename, technology, and customer relationship valuations. The Company continues to evaluate valuation assumptions such as the market demand for the Applied Cryo existing product lines to support forecasted revenue growth. Additionally, the Company continues to research the technology and buying power of Applied Cryo and evaluate the likelihood of achieving the additional production capacity needed in a timely manner to meet earnout milestones. Any necessary adjustments will be finalized within one year from the date of acquisition.

Identifiable intangible assets consisted of developed technology, tradename, acquired customer relationships, non-compete agreements and backlog. The fair value of the developed technology totaling $26.3 million was calculated using the relief from royalty approach which is a variant of the income approach. The application of the relief from royalty approach involves estimating the value of an intangible asset by quantifying the present value of the stream of market derived royalty payments that the owner of the intangible asset is exempted or ‘relieved’ from paying. The developed technology has a useful life of 15 years. The fair value of the tradename totaling $13.7 million was calculated using the relief from royalty approach with a useful life of 15 years. The fair value of the acquired customer relationships totaling $26.6 million was calculated using the MPEEM approach and has a 15 year useful life. The fair value of the acquired customer relationships was estimated by discounting the net cash flow derived from the expected revenues attributable to the acquired customer relationships. The fair value of the non-compete agreements was $1.0 million with a useful life of three years. The fair value of the customer backlog was $2.9 million with a useful life of one year.

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these contingent payments. These fair value measurements were based on unobservable inputs and are considered to be level 3 financial instruments.

In connection with the acquisition, the Company recorded on its consolidated balance sheet a liability of $14.0 million representing the fair value of contingent consideration payable. The fair value of this contingent consideration was remeasured as of March 31, 2022, and was $14.1 million for the three months ended March 31, 2022, and $0.1 million was recorded in the unaudited condensed consolidated statement of operations for the three months ended March 31, 2022.

Included in Applied Cryo’s total net assets acquired, excluding goodwill, were net deferred tax liabilities of $16.5 million. In connection with the acquisition of these net deferred tax liabilities, the Company reduced its valuation allowance by $16.5 million and recognized a tax benefit $16.5 million during the year ended December 31, 2021.

The goodwill was primarily attributed to the value of synergies created with the Company’s current and future offerings and the value of the assembled workforce. Goodwill and intangible assets are not deductible for income tax purposes. Goodwill associated with the Applied Cryo acquisition was calculated as follows (in thousands):


Consideration paid	$	162,093
Less: net assets acquired		(68,842)
Total goodwill recognized	$	93,251

The acquisition of Applied Cryo contributed $16.9 million to total consolidated revenue for the three months ended March 31, 2022. Applied Cryo results are monitored by the Company and as a result, the Company determined it impractical to report net loss for the Applied Cryo acquisition for the three months ended March 31, 2022.

Frames Holding B.V. Acquisition

On December 9, 2021, the Company acquired 100% of the outstanding shares of Frames Holding B.V. (“Frames”). Frames, a leading provider of turnkey hydrogen solutions.

The fair value of consideration paid by the Company in connection with the Frames acquisition was as follows (in thousands):


Cash	$	94,541
Contingent consideration		29,057
Settlement of preexisting relationship		4,263
Total consideration	$	127,861

The contingent consideration represents the estimated fair value associated with earn-out payments of up to €30.0 million that the sellers are eligible to receive in the form of cash. The contingent consideration is related to the achievement of certain internal operational targets during the four years following the closing date and is payable in 2 equal installments.

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The following table summarizes the preliminary allocation of the purchase price to the estimated fair value of the total net assets acquired, excluding goodwill (in thousands):


Cash	$	45,394
Accounts receivable		17,910
Inventory		34
Prepaid expenses and other assets		3,652
Property, plant and equipment		709
Right of use asset		1,937
Contract asset		9,960
Identifiable intangible assets		50,478
Lease liability		(1,937)
Contract liability		(22,737)
Accounts payable, accrued expenses and other liabilities		(18,465)
Deferred tax liability		(4,105)
Provision for loss contracts		(2,636)
Warranty provisions		(7,566)
Total net assets acquired, excluding goodwill	$	72,628

The preliminary allocation of the purchase price is still considered provisional due to outstanding customer valuation analysis. Identifiable intangible assets consisted of developed technology, tradename, acquired customer relationships, non-compete agreements and backlog.

The fair value of the developed technology totaling $5.3 million was calculated using the relief from royalty approach which is a variant of the income approach, and it has a useful life of eight years. The fair value of the tradename totaling $11.6 million was calculated using the relief from royalty approach, and it has a useful life of eight years. The fair value of the acquired customer relationships totaling $27.2 million was calculated using the MPEEM approach which is a variant of the income approach, and it has a useful life of 17 years. The fair value of the customer relationships was estimated by discounting the net cash flow derived from the expected revenues attributable to the acquired customer relationships. The fair value of the non-compete agreements totaling $4.9 million was calculated using the with and without income approach, and it has a useful life of approximately four years. The fair value of the backlog was $1.4 million, and it has a useful life of one year.

Included in the purchase price consideration are contingent earn-out payments described above. Due to the nature of the earn-outs, a scenario based analysis using the probability of achieving the milestone expectations was used to determine the fair value of the contingent consideration. These fair value measurements were based on unobservable inputs and are considered to be level 3 financial instruments.

In connection with the acquisition, the Company recorded on its consolidated balance sheet a liability of $29.1 million representing the fair value of contingent consideration payable. The fair value of this contingent consideration was remeasured as of March 31, 2022, and was $29.4 million for the three months ended March 31, 2022. The Company recorded an adjustment of $0.3 million for the three months ended March 31, 2022 in the unaudited interim condensed consolidated statement of operations.

Included in Frames’ total net assets acquired, excluding goodwill, are net deferred tax liabilities of $4.1 million.

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The goodwill was primarily attributed to the value of synergies created with the Company’s current and future offerings and the value of the assembled workforce. Goodwill and intangible assets are not deductible for income tax purposes. Goodwill associated with the Frames acquisition was calculated as follows (in thousands):


Consideration paid	$	127,861
Less: net assets acquired		(72,628)
Total goodwill recognized	$	55,233

The above estimates are preliminary in nature and subject to adjustments. Any necessary adjustments will be finalized within one year from the date of acquisition. Substantially all the receivables acquired are expected to be collectable. Purchased goodwill is not expected to be deductible for tax purposes.

The acquisition of Frames contributed $22.0 million to total consolidated revenue for the three months ended March 31, 2022. Frames results are monitored by the Company and as a result, the Company determined it impractical to report net loss for the Frames acquisition for the three months ended March 31, 2022.

None of the Joule, Applied Cryo Technologies, or the Frames acquisition was material to our consolidated results of operations or financial position and, therefore, pro forma financial information is not presented.

4. Extended Maintenance Contracts

On a quarterly basis, we evaluate any potential losses related to our extended maintenance contracts for fuel cell systems and related infrastructure that ~~has~~have been sold. We measure loss accruals at the customer contract level. The expected revenues and expenses for these contracts include all applicable expected costs of providing services over the remaining term of the contracts and the related unearned net revenue. A loss is recognized if the sum of expected costs of providing services under the remaining term of the contract exceeds related unearned net revenue and is recorded as a provision for loss contracts related to service in the consolidated statements of operations. A key component of these estimates is the expected future service costs. In estimating the expected future costs, the Company considers its current service cost level and applies significant judgment related to expected cost saving initiatives. The expected future cost savings will be primarily dependent upon the success of the Company’s initiatives related to increasing stack life, achieving better economies of scale for service labor, and improvements in design and operations of infrastructure. If the expected cost saving initiatives are not realized, this will increase the estimated costs of providing services and will adversely affect our estimated contract loss accrual. Further, we continue to work to improve quality and reliability; however, unanticipated additional quality issues or warranty claims may arise and additional material charges may be incurred in the future. These quality issues could also adversely affect our contract loss accrual. Service costs during 2021 have been higher than previously estimated. The Company has undertaken or will soon undertake several initiatives to extend the life and improve the reliability of its equipment. As a result of these initiatives and our additional expectation that the increase in certain costs attributable to the global pandemic will abate, the Company believes that its contract loss accrual is sufficient. However, if elevated service costs persist, the Company will adjust its estimated future service costs and increase its contract loss accrual estimate.

The following table shows the rollforward of balance in the accrual for loss contracts, including changes due to the ~~passage~~provision for loss accrual, loss accrual from acquisition, releases to service cost of ~~time, additions,~~sales, and ~~changes in estimates~~releases due to the provision for warrants (in thousands):

Nine months ended

Year ended

September 30, 2021

December 31, 2020
Beginning Balance
$
24,013

$
3,702
Provision for Loss Accrual

15,641

35,473
Released to Service Cost of Sales

(6,055)

(2,348)
Released to Provision for Warrants

—

(12,814)
Ending Balance
$
33,599

$
24,013


	Three months ended		Year ended
	March 31, 2022		December 31, 2021
Beginning balance	$	89,773	$	24,013
Provision for loss accrual		2,048		71,988
Loss accrual from acquisition		—		2,636
Releases to service cost of sales		(9,345)		(8,864)
Ending balance	$	82,476	$	89,773

4.5. Earnings Per Share

Basic earnings per common stock are computed by dividing net loss attributable to common stockholders by the weighted average number of common stock outstanding during the reporting period. ~~After January 1, 2021, the date of the adoption of ASU 2020-06, in~~In periods when we have net income, the shares of our common stock subject to the convertible notes outstanding during the period will be included in our diluted earnings per share under the if-converted method. Since the Company is in a net loss position, all common stock equivalents would be considered anti-dilutive and are therefore not included in the determination of diluted earnings per share. Accordingly, basic and diluted loss per share are the same.

The potentially dilutive securities are summarized as follows:


	At March 31,
	2022	2021
Stock options outstanding (1)	24,185,000	9,020,891
Restricted stock outstanding (2)	5,439,207	6,416,308
Common stock warrants (3)	80,017,181	88,264,726
Convertible Senior Notes (4)	39,170,766	39,170,766
Number of dilutive potential shares of common stock	148,812,154	142,872,691

(1)	During the three months ended March 31, 2022 and 2021, the Company granted options for 451,500 and 581,000 shares of common stock, respectively.

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At September 30,

2021

2020
Stock options outstanding (1)

24,784,288

14,434,983
Restricted stock outstanding (2)

4,960,376

5,992,974
Common stock warrants (3)

80,017,181

110,573,392
Convertible Senior Notes (4)

39,170,766

56,872,730
Number of dilutive potential shares of common stock

148,932,611

187,874,079

~~(1)~~

During the three months ended September 30, 2021 and 2020, the Company granted 15,732,335 and 3,192,400 stock options, respectively. During the nine months ended September 30, 2021 and 2020, the Company granted 16,430,835 and 3,367,049 stock options, respectively.

(2)

During the three months ended ~~September 30,~~March 31, 2022 and 2021, ~~and 2020,~~ the Company granted ~~1,159,856~~802,500 and ~~3,095,000~~555,000 restricted shares of ~~restricted stock, respectively. During the nine months ended September 30, 2021 and 2020, the Company granted 1,812,856 and 3,189,649 shares of restricted~~common stock, respectively.

(3)

In April 2017, the Company issued a warrant to acquire up to 55,286,696 shares of the Company’s common stock as part of a transaction agreement with Amazon, subject to certain vesting events, as described in Note 12, “Warrant Transaction Agreements.” The warrant had been exercised with respect to 17,461,994 and 9,214,449 shares of the Company’s common stock as of ~~September 30, 2021.~~March 31, 2022 and 2021, respectively.

In July 2017, the Company issued a warrant to acquire up to 55,286,696 shares of the Company’s common stock as part of a transaction agreement with Walmart, subject to certain vesting events, as described in Note 12, “Warrant Transaction Agreements.” The warrant had been exercised with respect to 13,094,217 shares of the Company’s common stock as of ~~September 30,~~March 31, 2022 and 2021.

(4)

In March 2018, the Company issued $100.0 million in aggregate principal amount of the 5.5% Convertible Senior Notes due 2023 (the “5.5% Convertible Senior Notes”). In May 2020, the Company repurchased $66.3 million of the 5.5% Convertible Senior Notes and in the fourth quarter of 2020, $33.5 million of the 5.5% Convertible Senior Notes were converted into approximately 14.6 million shares of common stock. The remaining ~~$160~~$160.0 thousand aggregate principal amount of the 5.5% Convertible Senior Notes were converted into 69,808 shares of common stock in January 2021. In September 2019, the Company issued $40.0 million in aggregate principal amount of the 7.5% Convertible Senior Note due 2023 (the “7.5% Convertible Senior Note”), which was fully converted into 16.0 million shares of common stock on July 1, 2020. In May 2020, the Company issued ~~$212.5~~$212.5 million in aggregate principal amount of the 3.75% Convertible Senior Notes. ~~During~~There were 0 conversions for the ~~first quarter of~~three months ended March 31, 2022. For the three months ended March 31, 2021, $15.2 million of the 3.75% Convertible Senior Notes were converted, ~~into~~resulting in the issuance of 3,016,036 shares of common stock. ~~There were 0 conversions in the second or third quarter of 2021.~~

Million of

5.6. Inventory

Inventory as of ~~September 30, 2021~~March 31, 2022 and December 31, ~~2020~~2021 consisted of the following (in thousands):

September 30,

December 31,

2021

2020

Raw materials and supplies - production locations

$
147,085

$
92,221

Raw materials and supplies - customer locations

13,611

12,405

Work-in-process

61,525

29,349

Finished goods

7,593

5,411

Inventory

$
229,814

$
139,386

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	March 31,		December 31,
	2022		2021
Raw materials and supplies - production locations	$	247,100	$	187,449
Raw materials and supplies - customer locations		14,301		16,294
Work-in-process		62,558		58,341
Finished goods		9,420		7,079
Inventory	$	333,379	$	269,163

~~6. Equipment Related to Power Purchase Agreements and Fuel Delivered to Customers, net~~

~~Equipment related to power purchase agreements and fuel delivered to customers, net at September 30, 2021 and December 31, 2020 consisted of the following (in thousands):~~

September 30,

December 31,

2021

2020

Equipment related to power purchase agreements and fuel delivered to customers

$
99,230

$
92,736

Less: accumulated depreciation

(20,519)

(16,929)

Equipment related to power purchase agreements and fuel delivered to customers, net

78,711

75,807

~~As of September 30, 2021, the Company had deployed long-lived assets at customer sites that had associated Power Purchase Agreements (“PPAs”). These PPAs expire over the next~~ ~~one~~ ~~to ten years. PPAs contain termination clauses with associated penalties, the amount of which cause the likelihood of cancellation to be remote.~~

Depreciation expense was $1.9 million and $2.3 million for the three months ended September 30, 2021 and 2020, respectively. Depreciation expense was $5.7 million and $6.6 million for the nine months ended September 30, 2021 and 2020, respectively.

The Company terminated its contractual relationship with a fuel provider effective March 31, 2021. The Company has historically leased fuel tanks from this provider. As a result of this termination, the Company recognized approximately $16.0 million of various costs in the six months ended June 30, 2021, primarily for removal of tanks, reimbursement of unamortized installation costs, costs to temporarily provide customers with fuel during the transition period, and certain other contract settlement costs, which were recorded in the Company’s unaudited interim condensed consolidated statement of operations as cost of revenue – fuel delivered to customers. The Company also purchased certain fuel tanks from the fuel provider during the six months ended June 30, 2021. NaN such purchases were made during the three months ended September 30, 2021.

7. Property, Plant and Equipment

Property, plant and equipment at ~~September 30, 2021~~March 31, 2022 and December 31, ~~2020~~2021 consisted of the following (in thousands):


	September 30, 2021		December 31, 2020		March 31, 2022		December 31, 2021
Land		1,165		1,165	$	1,165	$	1,165
Construction in progress						235,548		169,415
Leasehold improvements	$	1,440	$	1,121		2,645		2,099
Construction in progress		100,136		15,590
Software, machinery, and equipment		94,200		78,859		116,974		112,068
Property, plant, and equipment		196,941		96,735		356,332		284,747
Less: accumulated depreciation		(27,355)		(22,186)		(31,679)		(29,124)
Property, plant, and equipment, net	$	169,586	$	74,549	$	324,653	$	255,623

Construction in progress is primarily comprised of construction of hydrogen production plants and the Gigafactory in ~~Rochester.~~Rochester, NY. Completed assets are transferred to their respective asset classes, and depreciation begins

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when an asset is ready for its intended use. Interest on outstanding debt is capitalized during periods of capital asset construction and amortized over the useful lives of the related assets. During the ~~nine~~three months ended ~~September 30,~~March 31, 2022 and 2021, we capitalized ~~$2.6~~$4.3 million and $0 of ~~interest. Capitalized~~ interest, ~~in 2020 was 0t significant.~~respectively.

Depreciation expense related to property, plant and equipment was ~~$1.9~~$2.6 million and ~~$1.4~~$1.6 million for the three months ended ~~September 30,~~March 31, 2022 and 2021, ~~and 2020, respectively. Depreciation expense related to property, plant and equipment was $5.2 million and $3.2 million for the nine months ended September 30, 2021 and 2020,~~ respectively.

~~8. Intangible Assets and Goodwill~~

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8. Intangible Assets and Goodwill

The gross carrying amount and accumulated amortization of the Company’s acquired identifiable intangible assets as of ~~September 30, 2021~~March 31, 2022 were as follows (in thousands):


	Weighted Average	Gross Carrying		Accumulated				Weighted Average	Gross Carrying		Accumulated
	Amortization Period	Amount		Amortization		Total		Amortization Period	Amount		Amortization		Total
Acquired technology	10 years	$	13,040	$	(4,888)	$	8,152	14 years	$	104,605	$	(7,121)	$	97,484
Dry stack electrolyzer technology								5 years		29,000		(483)		28,517
Customer relationships, Non-compete agreements, Backlog & Trademark	6 years		890		(398)		492	12 years		90,811		(4,405)		86,406
In process research and development	Indefinite		29,000		—		29,000
		$	42,930	$	(5,286)	$	37,644		$	224,416	$	(12,009)	$	212,407

The gross carrying amount and accumulated amortization of the Company’s acquired identifiable intangible assets as of December 31, ~~2020~~2021 were as follows (in thousands):


	Weighted Average	Gross Carrying		Accumulated				Weighted Average	Gross Carrying		Accumulated
	Amortization Period	Amount		Amortization		Total		Amortization Period	Amount		Amortization		Total
Acquired technology	10 years	$	13,697	$	(4,042)	$	9,655	13 years	$	45,530	$	(5,392)	$	40,138
Customer relationships, Non-compete agreements, Backlog & Trademark	6 years		890		(294)		596	12 years		90,497		(1,427)		89,070
In process research and development	Indefinite		29,000		—		29,000	Indefinite		29,000		—		29,000
		$	43,587	$	(4,336)	$	39,251		$	165,027	$	(6,819)	$	158,208

The change in the gross carrying amount of the acquired technology from December 31, ~~2020~~2021 to ~~September 30, 2021~~March 31, 2022 was primarily due to the acquisition of Joule, the addition of the dry build electrolyzer stack related to the Giner ELX acquisition, and changes in foreign currency translation.

Amortization expense for acquired identifiable intangible assets for the three months ended ~~September 30,~~March 31, 2022 and 2021 ~~and 2020~~ was ~~$0.4~~$5.2 million and ~~$0.3 million, respectively. Amortization expense for acquired identifiable intangible assets for the nine months ended September 30, 2021 and 2020 was $1.1 million and $0.8~~$0.4 million, respectively.

The estimated amortization expense for subsequent years is as follows (in thousands):


Remainder of 2021	$	363
2022		1,453
Remainder of 2022			$	18,743
2023		1,453		21,189
2024		1,431		21,131
2025 and thereafter		3,944
2025				20,353
2026				18,797
2027 and thereafter				112,194
Total	$	8,644	$	212,407

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The change in the carrying amount of goodwill for the three month period ended March 31, 2022 was as follows (in thousands):


Beginning balance at December 31, 2021	$	220,436
Acquisitions		12,943
Adjustments		(52)
Loss due to currency translation		(1,296)
Ending balance at March 31, 2022	$	232,031

Goodwill was $71.9 million and $72.4 million as of September 30, 2021 and December 31, 2020, respectively, which decreased $531 thousand due to currency translation loss for HyPulsion S.A.S., our French subsidiary. There were 0 impairments during the nine months ended September 30, 2021 or the year ended December 31, 2020.

9. Long-Term Debt

In March 2019, the Company entered into a loan and security agreement, as amended (the “Loan Agreement”), with Generate Lending, LLC (“Generate Capital”), providing for a secured term loan facility in the amount of $100 million (the “Term Loan Facility”).

~~During the year ended December~~ On March 31, 2020, the Company, under another series of amendments to the Loan Agreement, borrowed an incremental $100.0 million. As part of the amendment to the Loan Agreement, the Company’s interest rate on the secured term loan facility was reduced to 9.50% from 12.00% per annum, and the maturity date was extended to October 31, 2025 from October 6, 2022. On September 30, 2021,2022, the outstanding balance under the Term Loan Facility was ~~$137.7~~$99.8 million. ~~In addition to~~The carrying value of the Term Loan Facility ~~on September 30, 2021, there was approximately $9.5 million of debt outstanding related to the United Hydrogen Group, Inc. acquisition.~~approximates fair value.

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The Loan Agreement includes covenants, limitations, and events of default customary for similar facilities. Interest and a portion of the principal amount is payable on a quarterly basis. Principal payments are funded in part by releases of restricted cash, as described in Note 19, “Commitments and Contingencies.” Based on the amortization schedule as of ~~September 30, 2021,~~March 31, 2022, the aforementioned loan balance under the Term Loan Facility will be fully paid by October 31, 2025. ~~The~~At March 31, 2022, the Company iswas in compliance with ~~or has obtained waivers for,~~ all debt ~~covenants.~~ covenants under the Term Loan Facility.

The Term Loan Facility is secured by substantially all of the Company’s and the guarantor subsidiaries’ assets, including, among other assets, all intellectual property, all securities in domestic subsidiaries and 65% of the securities in foreign subsidiaries, subject to certain exceptions and exclusions.

The Loan Agreement provides that if there is an event of default due to the Company’s insolvency or if the Company fails to perform in any material respect the servicing requirements for fuel cell systems under certain customer agreements, which failure would entitle the customer to terminate such customer agreement, replace the Company or withhold the payment of any material amount to the Company under such customer agreement, then Generate Capital has the right to cause Proton Services Inc., a wholly owned subsidiary of the Company, to replace the Company in performing the maintenance services under such customer agreement.

~~As of September 30, 2021, the Term Loan Facility requires the principal balance as of each of the following dates not to exceed the following (in thousands):~~

December 31, 2021
$
127,317
December 31, 2022

93,321
December 31, 2023

62,920
December 31, 2024

33,692
December 31, 2025

—

10. Convertible Senior Notes

3.75% Convertible Senior Notes

On May 18, 2020, the Company issued $200.0 million in aggregate principal amount of 3.75% Convertible Senior Notes due June 1, 2025, in a private placement to qualified institutional buyers pursuant to Rule 144A under the Securities Act of 1933, as amended (the “Securities Act”). On May 29, 2020, the Company issued an additional $12.5 million in aggregate principal amount of 3.75% Convertible Senior Notes.

~~At issuance in May 2020, the total net proceeds from the 3.75% Convertible Senior Notes were as follows:~~

The 3.75% Convertible Senior Notes bear interest at a rate of 3.75% per year, payable semi-annually in arrears on June 1 and December 1 of each year, beginning on December 1, 2020. The notes will mature on June 1, 2025, unless earlier converted, redeemed or repurchased in accordance with their terms.

The 3.75% Convertible Senior Notes are senior, unsecured obligations of the Company and rank senior in right of payment to any of the Company’s indebtedness that is expressly subordinated in right of payment to the notes, equal in right of payment to any of the Company’s existing and future liabilities that are not so subordinated, including the

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Company’s $100 million in aggregate principal amount of the 5.5% Convertible Senior Notes, effectively junior in right of payment to any of the Company’s secured indebtedness to the extent of the value of the collateral securing such indebtedness, and structurally subordinated to all indebtedness and other liabilities, including trade payables, of its current or future subsidiaries.

Holders of the 3.75% Convertible Senior Notes may convert their notes at their option at any time prior to the close of the business day immediately preceding December 1, 2024 in the following circumstances:

during any calendar quarter commencing after March 31, 2021 if the last reported sale price of the Company’s common stock exceeds 130% of the conversion price for each of 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;

~~during the~~ ~~five~~ ~~business days after any~~ ~~five~~ ~~consecutive trading day period (such~~ ~~five~~ consecutive trading day period, the measurement period) in which the trading price per $1,000 principal amount of the 3.75% Convertible Senior 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;

if the Company calls any or all of the 3.75% Convertible Senior Notes for redemption, any such notes that have been called for redemption may be converted at any time prior to the close of business on the second scheduled trading day immediately preceding the redemption date; or

~~upon the occurrence of specified corporate events, as described in the indenture governing the 3.75% Convertible Senior Notes.~~

On or after December 1, 2024, the holders of the 3.75% Convertible Senior Notes may convert all or any portion of their notes at any time prior to the close of business on the second scheduled trading day immediately preceding the maturity date regardless of the foregoing conditions.

The initial conversion rate for the 3.75% Convertible Senior Notes is 198.6196 shares of the Company’s common stock per $1,000 principal amount of notes, which is equivalent to an initial conversion price of approximately $5.03 per share of the Company’s common stock, subject to adjustment upon the occurrence of specified events. Upon conversion, the Company will pay or deliver, as applicable, cash, shares of the Company’s common stock or a combination of cash and shares of the Company’s common stock, at the Company’s election. During the three months ended ~~September 30, 2021, certain conditions allowing holders of the 3.75% Convertible Senior Notes to convert~~March 31, 2022, there were met. The 3.75% Convertible Senior Notes are therefore convertible during the calendar quarter ending September 30, 2021 at the conversion rate discussed above. During the nine months ended September 30, 2021, $15.2 million of the 3.75% Convertible Senior Notes were converted and the Company issued approximately 3.0 million shares of common stock in conjunction with these conversions.

In addition, following certain corporate events or following issuance of a notice of redemption, the Company will increase the conversion rate for a holder who elects to convert its notes in connection with such a corporate event or convert its notes called for redemption during the related redemption period in certain circumstances.

~~The 3.75% Convertible Senior Notes will be redeemable, in whole or in part, at the Company’s option at any time, and from time to time, on or after June 5, 2023 and before the 41~~^st scheduled trading day immediately before the maturity date, at a cash redemption price equal to 100% of the principal amount of the notes to be redeemed, plus accrued and unpaid interest, if any, but only if the last reported sale price per share of the Company’s common stock exceeds 130% of the conversion price then in effect for at least 20 trading days (whether or not consecutive), including at least ~~one~~ ~~of the~~ ~~three~~ trading days immediately preceding the date the Company sends the related redemption notice, during any 30 consecutive trading day period ending on, and including, the trading day immediately preceding the date on which the Company sends such redemption notice.

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If the Company undergoes a “fundamental change” (as defined in the Indenture), holders may require the Company to repurchase their notes for cash all or any portion of their notes at a fundamental change repurchase price equal to 100% of the principal amount of the notes to be repurchased, plus accrued and unpaid interest, to, but excluding, the fundamental change repurchase date.

The Company accounts for the 3.75% Convertible Senior Notes as a liability. We incurred transaction costs related to the issuance of the 3.75% Convertible Senior Notes of approximately $7.0 million, consisting of initial purchasers’ discount of approximately $6.4 million and other issuance costs of $0.6 million which were recorded as debt issuance cost (presented as contra debt in the unaudited interim condensed consolidated balance sheets) and are being amortized to interest expense over the term0 conversions of the 3.75% Convertible Senior Notes.

The 3.75% Convertible Senior Notes consisted of the following (in thousands):


	September 30,		March 31,
	2021		2022
Principal amounts:
Principal	$	197,278	$	197,278
Unamortized debt issuance costs (1)		(4,958)		(4,329)
Net carrying amount	$	192,320	$	192,949

Included in the unaudited interim condensed consolidated balance sheets within the 3.75% Convertible Senior Notes, net and amortized over the remaining life of the notes using the effective interest rate method.

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The following table summarizes the total interest expense and effective interest rate related to the 3.75% Convertible Senior Notes (in thousands, except for effective interest rate):


	September 30,		March 31,			March 31,
	2021		2022			2021
Interest expense	$	1,849	$	1,849	$	1,897
Amortization of debt issuance costs		306		316		1,258
Total		2,155		2,165		3,155

Effective interest rate		4.50%		4.5%		4.5%

Based on the closing price of the Company’s common stock of ~~$25.54~~$28.61 on ~~September 30, 2021,~~March 31, 2022, the if-converted value of the notes was greater than the principal amount. The estimated fair value of the note at ~~September 30, 2021~~March 31, 2022 was approximately ~~$1.0~~$1.1 billion. The fair value estimation was primarily based on an active stock exchange trade on ~~September~~March 30, ~~2021~~2022 of the 3.75% Convertible Senior Notes. See Note 15, “Fair Value Measurements,” for a description of the fair value hierarchy.

Capped Call

In conjunction with the pricing of the 3.75% Convertible Senior Notes, the Company entered into privately negotiated capped call transactions (the “3.75% Notes Capped Call”) with certain counterparties at a price of $16.2 million. The 3.75% Notes Capped Call covers, subject to anti-dilution adjustments, the aggregate number of shares of the Company’s common stock that underlie the initial 3.75% Convertible Senior Notes and is generally expected to reduce potential dilution to the Company’s common stock upon any conversion of the 3.75% Convertible Senior Notes and/or offset any cash payments the Company is required to make in excess of the principal amount of the converted notes, as the case may be, with such reduction and/or offset subject to a cap based on the cap price. The cap price of the 3.75% Notes Capped Call is initially $6.7560 per share, which represents a premium of approximately 60%over the last then-reported sale price of the Company’s common stock of $4.11 per share on the date of the transaction and is subject to certain adjustments under the terms of the 3.75% Notes Capped Call. The 3.75% Notes Capped Call becomes exercisable if the conversion option is exercised.

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The net cost incurred in connection with the 3.75% Notes Capped Call were recorded as a reduction to additional paid-in capital in the unaudited interim condensed consolidated balance sheets.

~~5.5% Convertible Senior~~

The book value of the 3.75% Notes Capped Call is not remeasured.

Common Stock Forward

In March 2018, the Company issued $100.0 million in aggregate principal amount of the 5.5% Convertible Senior Notes due on March 15, 2023, in a private placement to qualified institutional buyers pursuant to Rule 144A under the Securities ~~Act.~~

In May 2020, the Company used a portion of the net proceeds from the issuance of the 3.75% Convertible Senior Notes to finance the cash portion of the partial repurchase of the 5.5% Convertible Senior Notes,Act, which consisted of a repurchase of approximately $66.3 million in aggregate principal amount of the 5.5% Convertible Senior Notes in privately-negotiated transactions for aggregate consideration of $128.9 million, consisting of approximately $90.2 million in cash and approximately 9.4 million shares of the Company’s common stock. The partial repurchase of the 5.5% Convertible Senior Notes resulted in a $13.2 million gain on early debt extinguishment. In the fourth quarter of 2020, $33.5 million of the remaining 5.5% Convertible Senior Notes werehave been fully converted into 14.6 million shares of common stock which resulted in a gain of approximately $4.5 million which was recorded on the consolidated statement of operations on the gain (loss) on extinguishment of debt line.

~~On January 7, 2021, the remaining aggregate principal of $160 thousand aggregate principal amount of the 5.5% Convertible Senior Notes were converted into 69,808~~ shares of common stock. ~~Interest expense and amortization for the period were immaterial.~~

~~Capped Call~~

In conjunction with the pricing of the 5.5% Convertible Senior Notes, the Company entered into privately negotiated capped call transactions (the “5.5% Notes Capped Call”) with certain counterparties at a price of $16.0 million to reduce the potential dilution to the Company’s common stock upon any conversion of the 5.5% Convertible Senior Notes and/or offset any cash payments the Company is required to make in excess of the principal amount of the converted 5.5% Convertible Senior Notes, as the case may be. The net cost incurred in connection with the 5.5% Notes Capped Call has been recorded as a reduction to additional paid-in capital in the unaudited interim condensed consolidated balance sheets.

In conjunction with the pricing of the partial repurchase of the 5.5% Convertible Senior Notes, the Company terminated 100% of the 5.5% Notes Capped Call on June 5, 2020. As a result of the termination, the Company received $24.2 million, which was recorded in additional paid-in capital in the unaudited interim condensed consolidated balance sheets.

~~Common Stock Forward~~

In connection with the issuance of the 5.5% Convertible Senior Notes, the Company ~~also~~ entered into a forward stock purchase transaction (the “Common Stock Forward”), pursuant to which the Company agreed to purchase 14,397,906 shares of its common stock for settlement on or about March 15, 2023. ~~In connection with the issuance of the 3.75% Convertible Senior Notes and the partial repurchase of the 5.5% Convertible Senior Notes,~~On May 18, 2020, the Company amended and extended the maturity of the Common Stock Forward to June 1, 2025. The number of shares of common stock that the Company will ultimately repurchase under the Common Stock Forward is subject to customary anti-dilution adjustments. The Common Stock Forward is subject to early settlement or settlement with alternative consideration in the event of certain corporate transactions.

The net cost incurred in connection with the Common Stock Forward of $27.5 million was recorded as an increase in treasury stock in the unaudited interim condensed consolidated balance sheets. The related shares were accounted for as a repurchase of common stock.

~~The book value of the 5.5% Notes Capped Call and Common Stock Forward are not remeasured.~~

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The book value of the Common Stock Forward is not remeasured.

There were 0 shares of common stock settled in connection with the Common Stock Forward during the three months ended March 31, 2022. During the ~~fourth quarter of 2020,~~three months ended March 31, 2021, the Common Stock Forward was partially settled and ~~as a result, the Company received 4.4~~5.9 million shares ~~of its common stock. During the three months ended September 30, 2021, 0 shares~~ were ~~settled and received by the Company. During the nine months ended September 30, 2021, 8.1 million shares were settled and~~ received by the Company.

11. Stockholders’ Equity

~~Preferred Stock~~

The Company has authorized 5.0 million shares of preferred stock, par value $0.01 per share. The Company’s certificate of incorporation provides that shares of preferred stock may be issued from time to time in one or more series. The Company’s Board of Directors is authorized to fix the voting rights, if any, designations, powers, preferences, qualifications, limitations and restrictions thereof, applicable to the shares of each series.

The Company has authorized Series A Junior Participating Cumulative Preferred Stock, par value $0.01 per share. As of September 30, 2021 and December 31, 2020, there were 0 shares of Series A Junior Participating Cumulative Preferred Stock issued and outstanding.

Common Stock and Warrants

~~The Company has one class of common stock, par value $0.01 per share. Each share of the Company’s common stock is entitled to 1 vote on all matters submitted to stockholders.~~

In February 2021, the Company completed ~~the previously announced~~a sale of its common stock in connection with a strategic partnership with SK Holdings Co., Ltd. (“SK Holdings”) to accelerate the use of hydrogen as an alternative energy source in Asian markets. The Company sold 54,966,188 shares of its common stock to a subsidiary of SK Holdings at a purchase price of $29.2893 per share, or an aggregate purchase price of approximately $1.6 billion.

In January and February 2021, the Company issued and sold in a registered equity offering an aggregate of 32.2 million shares of its common stock at a purchase price of $65.00 per share for net proceeds of approximately $2.0 billion.

In November 2020, the Company issued and sold in a registered equity offering an aggregate of 43,700,000 shares of its common stock at a purchase price of $22.25 per share for net proceeds of approximately $927.3 million.

In August 2020, the Company issued and sold in a registered equity offering an aggregate of 35,276,250 shares of its common stock at a purchase price of $10.25 per share for net proceeds of approximately $344.4 million.

During 2017, warrants to purchase up to 110,573,392 shares of common stock were issued in connection with transaction agreements with Amazon and Walmart, as discussed in Note 12, “Warrant Transaction Agreements.” At ~~both September 30, 2021~~March 31, 2022 and December 31, ~~2020, a total~~2021, 75,655,478 of ~~68,380,913 warrants~~the warrant shares had ~~vested. Warrants~~vested, and were exercised with respect to 5,819,652 shares during the fourth quarter of 2020. For the three and nine months ended September 30, 2021, warrants were exercised with respect to 3,501,640 and 24,736,559 shares of common stock, respectively.therefore exercisable. These warrants are measured at fair value at the time of grant or modification and are classified as equity instruments on the unaudited interim condensed consolidated balance sheets.

~~At Market Issuance Sales Agreement~~

On April 13, 2020, the Company entered into the At Market Issuance Sales Agreement with B. Riley Financial (“B. Riley”), as sales agent, pursuant to which the Company may offer and sell, from time to time through B. Riley, shares of Company common stock having an aggregate offering price of up to $75.0 million. As of the date of this filing, the Company has not issued any shares of common stock pursuant to the At Market Issuance Sales Agreement.

12. Warrant Transaction Agreements

~~Table of Contents~~

Amazon Transaction Agreement

On April 4, 2017, the Company and Amazon entered into a Transaction Agreement (the “Amazon Transaction Agreement”), pursuant to which the Company agreed to issue to Amazon.com NV Investment Holdings LLC, a wholly owned subsidiary of Amazon, a warrant (the “Amazon Warrant”) to acquire up to 55,286,696 shares of the Company’s common stock (the “Amazon Warrant Shares”), subject to certain vesting events described below. The Company and Amazon entered into the Amazon Transaction Agreement in connection with existing commercial agreements between the Company and Amazon with respect to the deployment of the Company’s GenKey fuel cell technology at Amazon distribution centers. The existing commercial agreements contemplate, but do not guarantee, future purchase orders for the Company’s fuel cell technology. The vesting of the Amazon Warrant Shares was conditioned upon payments made by Amazon or its affiliates (directly or indirectly through third parties) pursuant to the existing commercial agreements.

~~Under the terms~~The warrant had been exercised with respect to 17,461,994 shares of the ~~original Amazon Warrant, the first tranche~~Company’s common stock as of ~~the 5,819,652 Amazon Warrant Shares vested upon execution of the Amazon Warrant,~~both March 31, 2022 and the remaining Amazon Warrant Shares vest based on Amazon’s payment of up to $600.0 million to the Company in connection with Amazon’s purchase of goods and services from the Company. The $6.7 million fair value of the first tranche of the Amazon Warrant Shares was recognized as selling, general and administrative expense upon execution of the Amazon Warrant.

~~Provision for the second and third tranches of Amazon Warrant Shares is recorded as a reduction of revenue because they represent consideration payable to a customer.~~

The fair value of the second tranche of Amazon Warrant Shares was measured at January 1, 2019, upon adoption of ASU 2019-08. The second tranche of 29,098,260 Amazon Warrant Shares vested in 4 equal installments, as Amazon or its affiliates, directly or indirectly through third parties, made an aggregate of $50.0 million in payments for goods and services to the Company, up to payments totaling $200.0 million in the aggregate. The last installment of the second tranche vested on November 2, 2020. Revenue reductions of $9.0 million, $4.1 million and $9.8 million associated with the second tranche of Amazon Warrant Shares were recorded in 2020, 2019 and 2018, respectively, under the terms of the original Amazon Warrant.

Under the terms of the original Amazon Warrant, the third tranche of 20,368,784 Amazon Warrant Shares vests in 8 equal installments, as Amazon or its affiliates, directly or indirectly through third parties, made an aggregate of $50.0 million in payments for goods and services to the Company, up to payments totaling $400.0 million in the aggregate. The measurement date for the third tranche of Amazon Warrant Shares was November 2, 2020, when their exercise price was determined, as discussed further below. The fair value of the third tranche of Amazon Warrant Shares was determined to be $10.57 each. During 2020, revenue reductions of $24.1 million associated with the third tranche Amazon Warrant Shares were recorded under the terms of the original Amazon Warrant, prior to the December 31, ~~2020 waiver described below.~~

On December 31, 2020, the Company waived the remaining vesting conditions under the Amazon Warrant, which resulted in the immediate vesting of all the third tranche of the Amazon Warrant Shares and recognition of an additional $399.7 million reduction to revenue.

The $399.7 million reduction to revenue resulting from the December 31, 2020 waiver was determined based upon a probability assessment of whether the underlying shares would have vested under the terms of the original Amazon Warrant. Based upon the Company’s projections of probable future cash collections from Amazon (i.e., a Type I share based payment modification), a reduction of revenue associated with 5,354,905 Amazon Warrant Shares was recognized at their previously measured November 2, 2020 fair value of $10.57 per warrant. A reduction of revenue associated with the remaining 12,730,490 Amazon Warrant Shares was recognized at their December 31, 2020 fair value of $26.95 each, based upon the Company’s assessment that associated future cash collections from Amazon were not deemed probable (i.e., a Type III share based payment modification).

~~Table of Contents~~

31, 2020 waiver. Additionally, for the year ended December 31, 2020, the Company recorded a reduction to the provision for warrants of $12.8 million in connection with the release of the service loss accrual. 2021.

At December 31, ~~2020,~~2021, all 55,286,696 of the Amazon Warrant Shares had vested. For service contracts entered into prior to December 31, 2020, the warrant charge associated with that revenue was capitalized and is subsequently amortized over the life of the service contract. The total amount of provision for common stock warrants recorded as a reduction of revenue for the Amazon Warrant during the three months ended ~~September 30,~~March 31, 2022 and 2021 ~~and 2020~~ was ~~$106~~$110 thousand and $17.3 million, respectively. The amount of provision for common stock warrants recorded as a reduction of revenue for the Amazon Warrant during the nine months ended September 30, 2021 and 2020 was $315$104 thousand, ~~and $22.0 million, respectively. During the three and nine months ended September 30, 2021, the Amazon Warrant was exercised with respect to 3,501,640 and 17,461,994 shares of common stock,~~ respectively.

~~The exercise price for the first and second tranches~~19

Table of Amazon Warrant Shares was $1.1893 per share. The exercise price of the third tranche of Amazon Warrant Shares was $13.81 per share, which was determined pursuant to the terms of the Amazon Warrant as an amount equal to 90 percent (90%) of the 30-day volume weighted average share price of the Company’s common stock as of November 2, 2020, the final vesting date of the second tranche of Amazon Warrant Shares. The Amazon Warrant is exercisable through April 4, 2027. The Amazon Warrant provides for net share settlement that, if elected by the holder, will reduce the number of shares issued upon exercise to reflect net settlement of the exercise price. The Amazon Warrant provides for certain adjustments that may be made to the exercise price and the number of shares of common stock issuable upon exercise due to customary anti-dilution provisions based on future events. The Amazon Warrant is classified as an equity instrument.Contents

Fair value of the Amazon Warrant at December 31, 2020 and November 2, 2020 was based on the Black Scholes Option Pricing Model, which is based, in part, upon level 3 unobservable inputs for which there is little or no market data, requiring the Company to develop its own assumptions.

~~The Company used the following assumptions for its Amazon Warrant:~~

Walmart Transaction Agreement

On July 20, 2017, the Company and Walmart entered into a Transaction Agreement (the “Walmart Transaction Agreement”), pursuant to which the Company agreed to issue to Walmart a warrant (the “Walmart Warrant”) to acquire up to 55,286,696 shares of the Company’s common stock, subject to certain vesting events (the “Walmart Warrant Shares”). The Company and Walmart entered into the Walmart Transaction Agreement in connection with existing commercial agreements between the Company and Walmart with respect to the deployment of the Company’s GenKey fuel cell technology across various Walmart distribution centers. The existing commercial agreements contemplate, but do not guarantee, future purchase orders for the Company’s fuel cell technology. The vesting of the warrant shares conditioned upon payments made by Walmart or its affiliates (directly or indirectly through third parties) pursuant to transactions entered into after January 1, 2017 under existing commercial agreements.

The ~~majority~~warrant had been exercised with respect to 13,094,217 shares of the Walmart Warrant Shares will vest based on Walmart’s payment of up to $600.0 million to the Company in connection with Walmart’s purchase of goods and services from the Company. The first tranche of 5,819,652 Walmart Warrant Shares vested upon the execution of the Walmart Warrant and was fully exercised as of December 31, 2020. Accordingly, $10.9 million, the fair value of the first tranche of Walmart Warrant Shares, was recorded as a provision for common stock warrants and presented as a reduction to revenue on the consolidated statements

~~Table of Contents~~

of operations during 2017. All future provision for common stock warrants is measured based on their grant-date fair value and recorded as a charge against revenue. The second tranche of 29,098,260 Walmart Warrant Shares vests in 4 installments of 7,274,565 Walmart Warrant Shares each time Walmart or its affiliates, directly or indirectly through third parties, make an aggregate of $50.0 million in payments for goods and services to the Company, up to payments totaling $200.0 million in the aggregate. The exercise price for the first and second tranches of Walmart Warrant Shares is $2.1231 per share. After Walmart has made payments to the Company totaling $200.0 million, the third tranche of 20,368,784 Walmart Warrant Shares will vest in 8 installments of 2,546,098 Walmart Warrant Shares each time Walmart or its affiliates, directly or indirectly through third parties, make an aggregate of $50.0 million in payments for goods and services to the Company, up to payments totaling $400.0 million in the aggregate. The exercise price of the third tranche of Walmart Warrant Shares will be an amount per share equal to ninety percent (90%) of the 30-day volume weighted average share price of theCompany’s common stock as of the final vesting date of the second tranche of Walmart Warrant Shares, provided that, with limited exceptions, the exercise price for the third tranche will be no lower than $1.1893. The Walmart Warrant is exercisable through July 20, 2027.

The Walmart Warrant provides for net share settlement that, if elected by the holder, will reduce the number of shares issued upon exercise to reflect net settlement of the exercise price. The Walmart Warrant provides for certain adjustments that may be made to the exercise priceboth March 31, 2022 and ~~the number of shares of common stock issuable upon exercise due to customary anti-dilution provisions based on future events. The Walmart Warrant is classified as an equity instrument.~~December 31, 2021.

At both ~~September 30, 2021~~March 31, 2022 and December 31, ~~2020, 13,094,217~~2021, 20,368,782 of the Walmart Warrant Shares had vested. The total amount of provision for common stock warrants recorded as a reduction of revenue for the Walmart Warrant during the three months ended ~~September 30,~~March 31, 2022 and 2021 ~~and 2020~~ was ~~$1.2~~$1.7 million and $1.3 million, respectively. The amount of provision for common stock warrants recorded as a reduction of revenue for the Walmart Warrant during the nine months ended September 30, 2021 and 2020 was $4.4 million and $3.2$1.6 million, respectively. During the three months ended March 31, 2022 and 2021, respectively, the Walmart Warrant ~~had been~~was exercised with respect to 0 and 7,274,565 shares of common stock. ~~There were 0 exercises during the second or third quarter of 2021.~~

13. Revenue

Disaggregation of revenue

The following table provides information about disaggregation of revenue (in thousands):


Major products/services lines
	Three months ended September 30,				Nine months ended September 30,				Three months ended March 31,
	2021		2020		2021		2020		2022		2021
Sales of fuel cell systems	$	67,032	$	51,998	$	152,620	$	107,515	$	37,528	$	26,419
Sale of hydrogen installations and other infrastructure		48,967		31,664		109,429		44,361
Sales of hydrogen infrastructure										27,089		20,353
Sales of electolyzers										4,059		—
Sales of oil and gas equipment										21,968		—
Services performed on fuel cell systems and related infrastructure		6,677		6,829		18,397		19,586		8,240		6,045
Power Purchase Agreements		9,321		6,629		25,508		19,629		10,037		7,826
Fuel delivered to customers		11,556		9,831		33,804		24,536		13,429		11,127
Sales of cryogenic equipment										18,203		—
Other		369		97		679		235		251		188
Net revenue	$	143,922	$	107,048	$	340,437	$	215,862	$	140,804	$	71,958

Contract balances

The following table provides information about receivables, contract assets and contract liabilities from contracts with customers (in thousands):


	March 31,		December 31,
	2022		2021
Accounts receivable	$	57,322	$	92,675
Contract assets		38,713		38,757
Contract liabilities		155,185		183,090

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September 30,

December 31,

2021

2020
Accounts receivable

$
132,370

$
43,041
Contract assets

9,284

18,189
Contract liabilities

115,595

76,285

Contract assets relate to contracts for which revenue is recognized on a straight-line basis; however, billings escalate over the life of a contract. Contract assets also include amounts recognized as revenue in advance of billings to customers, which are dependent upon the satisfaction of another performance obligation. These amounts are included ~~within prepaid expenses and other current~~in contract assets on the accompanying unaudited interim condensed consolidated balance sheets.

The contract liabilities relate to the advance consideration received from customers for services that will be recognized over time (primarily fuel cell and related infrastructure services) and advance consideration received from customers prior to delivery of products. ~~As of September 30, 2021, the amount of contract liabilities~~These amounts are included within deferred revenue ~~was $98.9 million~~ and ~~the amount of~~other contract liabilities ~~within other current liabilities was $16.7 million~~ on the ~~accompanying~~ unaudited interim condensed consolidated balance sheets. As of December 31, 2020, the amount of contract liabilities included within deferred revenue was $56.2 million and the amount of contract liabilities within other current liabilities was $20.1 million.

Significant changes in the contract assets and the contract liabilities balances during the period are as follows (in thousands):



~~Contract assets~~	~~Nine months ended~~
	~~September 30, 2021~~
~~Transferred to receivables from contract assets recognized at the beginning of the period~~	$	~~(13,344)~~
~~Revenue recognized and not billed as of the end of the period~~		~~4,439~~
~~Net change in contract assets~~		~~(8,905)~~



Contract assets	Three months ended
	March 31, 2022		December 31, 2021
Transferred to receivables from contract assets recognized at the beginning of the period	$	(3,693)	$	(14,638)
Contract assets assumed as part of acquisition		—		9,960
Revenue recognized and not billed as of the end of the period		3,649		25,246
Net change in contract assets	$	(44)	$	20,568

Contract liabilities

Nine months ended

September 30, 2021
Increases due to cash received, net of amounts recognized as revenue during the period

$
91,985
Revenue recognized that was included in the contract liability balance as of the beginning of the period

(52,675)
Net change in contract liabilities

$
39,310


Contract liabilities	Three months ended
	March 31, 2022		December 31, 2021
Increases due to cash received, net of amounts recognized as revenue during the period	$	13,327	$	182,052
Contract liabilities assumed as part of acquisitions		3,818		35,727
Revenue recognized that was included in the contract liability balance as of the beginning of the period		(45,050)		(110,974)
Net change in contract liabilities	$	(27,905)	$	106,805

Estimated future revenue

~~Sales of fuel cell systems and hydrogen installations are expected to be recognized as revenue within one year and~~ ~~sales~~ of ~~services~~ ~~and PPAs are expected to be recognized as revenue over~~ ~~five~~ ~~to seven years.~~ The following table includes estimated revenue included in the backlog expected to be recognized in the future (sales of fuel cell systems and hydrogen installations are expected to be recognized as revenue within one year; sales of services and PowerPurchase Agreements (“PPAs”) are expected to be recognized as revenue over five to seven years) related to performance obligations that are unsatisfied (or partially unsatisfied) at the end of the reporting period, ~~including~~net of the provision for common stock warrants (in thousands):



	September 30,			March 31,
	2021			2022
Sales of fuel cell systems	$	23,819		$	16,466
Sale of hydrogen installations and other infrastructure		58,429			40,487
Sale of electrolyzers					51,267
Sales of oil and gas equipment					73,270
Services performed on fuel cell systems and related infrastructure		105,548			98,635
Power Purchase Agreements		212,360			255,929
Fuel delivered to customers		62,609
Other rental income		2,116
Fuel delivered to customers and related equipment			��		83,796
Sale of cryogenic equipment					62,299
Total estimated future revenue				$	682,149

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~~Total estimated future revenue~~

~~464,881~~

Contract costs

Contract costs consist of capitalized commission fees and other expenses related to obtaining or fulfilling a contract.

Capitalized contract costs at ~~September 30,~~March 31, 2022 and March 31, 2021 were $0.5 million and ~~December 31, 2020 were $807 thousand and $1.3~~$1.7 million, respectively.

14. Income Taxes

The Company ~~did 0t record any income tax expense or benefit for the three or nine months ended September 30, 2021. The Company recognized an~~recorded $0.4 million and $0 of income tax benefit for the three ~~and nine~~ months ended ~~September 30, 2020 of $6.6~~March 31, 2022 and ~~$19.0~~ ~~million, respectively, resulting from the intraperiod tax allocation rules under ASC Topic 740-20,~~ ~~Intraperiod Tax Allocation~~, under which the Company recognized an income tax benefit resulting from a source of future taxable income attributable to the net credit to additional paid-in capital related to the issuance of the 3.75% Convertible Senior Notes, offset by the partial extinguishment of the 5.5% Convertible Senior Notes. In addition, the Company recorded $5.0 million of income tax benefit for the nine months ended September 30, 2020 related to the recognition of net deferred tax liabilities in connection with the Giner, ELX Inc. acquisition, which resulted in a corresponding reduction in our deferred tax asset valuation allowance.2021, respectively. The Company has not changed its overall conclusion with respect to the need for a valuation allowance against its domestic net deferred tax assets, which remain fully reserved.

The domestic net deferred tax asset generated from the Company’s net operating loss has been offset by a full valuation allowance because it is more likely than not that the tax benefits of the net operating loss carry forward will not be realized. The Company recognizes accrued interest and penalties related to unrecognized tax benefits, if any, as a component of income tax expense.

15. Fair Value Measurements

The Company records the fair value of assets and liabilities in accordance with ASC 820, Fair Value Measurement (“ASC 820”). ASC 820 defines fair value as the price received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date and in the principal or most advantageous market for that asset or liability. The fair value should be calculated based on assumptions that market participants would use in pricing the asset or liability, not on assumptions specific to the entity.

In addition to defining fair value, ASC 820 expands the disclosure requirements around fair value and establishes a fair value hierarchy for valuation inputs. The hierarchy prioritizes the inputs into three levels based on the extent to which inputs used in measuring fair value are observable in the market. Each fair value measurement is reported in one of the three levels, which is determined by the lowest level input that is significant to the fair value measurement in its entirety.

These levels are:

●

Level 1 — quoted prices (unadjusted) in active markets for identical assets or liabilities.

●

Level 2 — quoted prices for similar assets and liabilities in active markets or inputs that are observable for the asset or liability, either directly or indirectly through market corroboration, for substantially the full term of the financial instrument.

●

Level 3 — unobservable inputs reflecting management’s own assumptions about the inputs used in pricing the asset or liability at fair value.

Securities reported at fair value utilizing Level 1 inputs represent assets whose fair value is determined based upon observable unadjusted quoted market prices for identical assets in active markets. Level 2 securities represent assets whose fair value is determined using observable market information such as previous day trade prices, quotes from less active markets or quoted prices of securities with similar characteristics. Available-for-sale securities are characterized as Level 2 assets, as their fair values are determined using observable market inputs. Equity securities are characterized as Level 1 assets, as their fair values are determined using active markets for identical assets. There were 0 transfers between Level1, Level2, or Level3 for the three months ended March 31, 2022.

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~~quotes from less active markets or quoted prices of securities with similar characteristics. There were 0 transfers~~ ~~betweenLevel~~1, ~~Level~~2~~, or~~ ~~Level~~ ~~3 during~~ ~~the~~ ~~nine months ended September 30, 2021.~~

~~Assets and liabilities measured at fair value on a recurring basis are summarized below (in thousands):~~

~~(1)~~

~~Included in~~ ~~“Cash and cash equivalents” in our unaudited interim condensed consolidated balance sheets as of September 30, 2021.~~

The fair values for available-for-sale and equity securities are based on prices obtained from independent pricing services. Available-for-sale securities are characterized as Level 2 assets, as their fair values are determined using observable market inputs. Equity securities are characterized as Level 1 assets, as their fair values are determined using active markets for identical assets.

Financial instruments not recorded at fair value on a recurring basis include equity method investments that have not been remeasured or impaired in the current period, such as our ~~investment~~investments in ~~HyVia.~~HyVia, AccionaPlug S.L., and HALO Hydrogen Co, Ltd. During the three months ended March 31, 2022, the Company contributed approximately $22.6 million to HyVia, AccionaPlug S.L. and HALO Hydrogen Co, Ltd.

Assets and liabilities measured at fair value on a recurring basis are summarized below (in thousands):


		As of March 31, 2022
		Carrying		Fair		Fair Value Measurements
		Amount		Value		Level 1		Level 2		Level 3
Assets
Cash equivalents	$	37,116	$	37,116	$	37,116	$	—	$	—
Corporate bonds		244,921		244,921		—		244,921		—
U.S. Treasuries		554,307		554,307		554,307		—		—
Equity securities		147,826		147,826		147,826		—		—

Liabilities
Contingent consideration		103,219		103,219		—		—		103,219
Swaps and forward contracts		371		(1,165)		1,165		—		—


		As of December 31, 2021
		Carrying		Fair		Fair Value Measurements
		Amount		Value		Level 1		Level 2		Level 3
Assets
Cash equivalents	$	115,241	$	115,241	$	115,241	$	—	$	—
Corporate bonds		226,382		226,382		—		226,382		—
U.S. Treasuries		1,013,883		1,013,883		1,013,883		—		—
Equity securities		147,995		147,995		147,995		—		—
Swaps and forward contracts		70		70		70		—		—

Liabilities
Contingent consideration		62,297		62,297		—		—		62,297
Swaps and forward contracts		981		981		981		—		—

The assets and liabilities measured at fair value on a recurring basis that have unobservable inputs and are therefore categorized as level 3 are:


Financial Instrument	Fair Value		Valuation Technique	Unobservable Input	Range (weighted average)
Contingent Consideration	$	89,670	Scenario based method	Credit spread	12.34% - 13.77% (13.06%)
				Discount rate	13.84% - 16.06% (14.95%)
		10,400	Monte carlo simulation	Credit spread	12.50%
				Discount rate	14.63%
				Revenue volatility	57.24% (35.0%)
		3,149	Monte carlo simulation	Credit spread	13.00% - 13.08% (12.92%)
				Revenue volatility	47.7% - 25.9% (35.0%)
				Gross profit volatility	113.9% - 24.2% (70.0%)
		103,219

The change in the carrying amount of Level 3 liabilities for the three month period ended March 31, 2022 was as follows (in thousands):


	Three months ended
		March 31, 2022
Beginning balance at December 31, 2021	$	62,297
Payments		(2,667)
Additions due to acquisitions		41,732
Fair value adjustments		2,461
Gain due to currency translation		(604)
Ending balance at March 31, 2022	$	103,219

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16. Investments

The amortized cost, gross unrealized gains and losses, fair value of those investments classified as available-for-sale, and allowance for credit losses at March 31, 2022 are summarized as follows (in thousands):


		March 31, 2022
	Amortized		Gross		Gross		Fair		Allowance for
	Cost		Unrealized Gains		Unrealized Losses		Value		Credit Losses
Corporate bonds	$	251,827	$	—	$	(6,906)	$	244,921		—
U.S. Treasuries		565,149		—		(10,842)		554,307		—
Total	$	816,976	$	—	$	(17,748)	$	799,228	$	—

The amortized cost, gross unrealized gains and losses, fair value of those investments classified as available-for-sale, and allowance for credit losses at December 31, 2021 are summarized as follows (in thousands):


		December 31, 2021
	Amortized		Gross		Gross		Fair		Allowance for
	Cost		Unrealized Gains		Unrealized Losses		Value		Credit Losses
Corporate bonds	$	228,614	$	—	$	(2,232)	$	226,382		—
U.S. Treasuries		1,014,319		20		(456)		1,013,883		—
Total	$	1,242,933	$	20	$	(2,688)	$	1,240,265	$	—

The cost, gross unrealized gains and losses, and fair value of those investments classified as equity securities at March 31, 2022 are summarized as follows (in thousands):


	March 31, 2022
			Gross		Gross		Fair
		Cost	Unrealized Gains		Unrealized Losses		Value
Fixed income mutual funds	$	70,247	$	—	$	(1,772)	$	68,475
Exchange traded mutual funds		76,000		3,351		—		79,351
Total	$	146,247	$	3,351	$	(1,772)	$	147,826

The cost, gross unrealized gains and losses, and fair value of those investments classified as equity securities at December 31, 2021 are summarized as follows (in thousands):


	December 31, 2021
			Gross		Gross		Fair
		Cost	Unrealized Gains		Unrealized Losses		Value
Fixed income mutual funds	$	70,247	$	—	$	(574)	$	69,673
Exchange traded mutual funds		71,010		7,312		—		78,322
Total	$	141,257	$	7,312	$	(574)	$	147,995

A summary of the amortized cost and fair value of investments classified as available-for-sale, by contractual maturity, as of March 31, 2022 and December 31, 2021 was as follows (in thousands):


	March 31, 2022				December 31, 2021
		Amortized	Fair			Amortized	Fair
Maturity:		Cost	Value			Cost	Value
Within one year	$	307,565	$	305,681	$	670,584	$	670,306

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After one through five years		509,411			493,547			572,349			569,959
Total	$	816,976		$	799,228		$	1,242,933		$	1,240,265

Accrued interest income was $3.3 million and $3.7 million at March 31, 2022 and December 31, 2021, respectively, and included within the balance for prepaid expenses and other current assets in the unaudited interim condensed consolidated balance sheets.

~~16.~~17. Operating and Finance Lease Liabilities

As of ~~September 30, 2021,~~March 31, 2022 the Company had operating leases, as lessee, primarily associated with sale/leaseback transactions that are partially secured by restricted cash, security deposits and pledged escrows (see also Note 1, “Nature of Operations”) as summarized below. These leases expire over the next one to nine years. Minimum rent payments under operating leases are recognized on a straight-line basis over the term of the lease.

Leases contain termination clauses with associated penalties, the amount of which cause the likelihood of cancellation to be remote. At the end of the lease term, the leased assets may be returned to the lessor by the Company, the Company may negotiate with the lessor to purchase the assets at fair market value, or the Company may negotiate with the lessor to renew the lease at market rental rates. No residual value guarantees are contained in the leases. No financial covenants are contained within the lease; however, ~~there are~~the lease contains customary operational covenants such as ~~assurance~~the requirement that the Company properly ~~maintains~~maintain the leased assets and ~~carries~~carry appropriate ~~insurance, etc.~~insurance. The leases include credit support in the form of either cash, collateral or letters of credit. See Note 19, “Commitments and Contingencies” for a description of cash held as security associated with the leases.

The Company has finance leases associated with its property and equipment in Latham, New York and at fueling customer locations. The fair value of this finance obligation approximated the carrying value as of ~~September 30,~~March 31, 2022.

Future minimum lease payments under operating and finance leases (with initial or remaining lease terms in excess of one year) as of March 31, 2022 were as follows (in thousands):


			Finance		Total
	Operating Lease		Lease		Lease
	Liability		Liability		Liabilities
Remainder of 2022	$	42,373	$	5,929	$	48,302
2023		56,034		7,800		63,834
2024		54,667		7,773		62,440
2025		50,800		10,671		61,471
2026		43,515		8,039		51,554
2027 and thereafter		43,652		2,343		45,995
Total future minimum payments		291,041		42,555		333,596
Less imputed interest		(71,350)		(6,381)		(77,731)
Total	$	219,691	$	36,174	$	255,865

Rental expense for all operating leases was $14.0 million and $8.0 million for the three months ended March 31, 2022 and 2021, respectively.

At March 31, 2022 and December 31, 2021, security deposits associated with sale/leaseback transactions were $3.8 million and $3.5 million, respectively, and were included in other assets in the unaudited interim condensed consolidated balance sheets.

At March 31, 2022 and December 31, 2021, the right of use assets associated with finance leases was $42.3 million and $33.9 million, respectively. The accumulated depreciation for these right of use assets was $2.2 million and $1.5 million at March 31, 2022 and December 31, 2021, respectively.

Table of Contents

Other information related to the operating leases are presented in the following table:


	Three months ended		Three months ended
	March 31, 2022		March 31, 2021
Cash payments (in thousands)	$	13,547	$	6,734
Weighted average remaining lease term (years)		5.46		5.77
Weighted average discount rate		10.9%		11.6%

Finance lease costs include amortization of the right of use assets (i.e., depreciation expense) and interest on lease liabilities (i.e., interest and other expense, net in the consolidated statement of operations), and were $749 thousand and $556 thousand for the three months ended March 31, 2022, respectively.

Other information related to the finance leases are presented in the following table:


	Three months ended		Three months ended
	March 31, 2022		March 31, 2021
Cash payments (in thousands)	$	1,868	$	433
Weighted average remaining lease term (years)		4.44		5.10
Weighted average discount rate		6.5%		7.2%

18. Finance Obligation

The Company has sold future services to be performed associated with certain sale/leaseback transactions and recorded the balance as a finance obligation. The outstanding balance of this obligation at March 31, 2022 was $244.1 million, $40.5 million and $203.6 million of which was classified as short-term and long-term, respectively, on the accompanying unaudited interim condensed consolidated balance sheet. The outstanding balance of this obligation at December 31, 2021 was $236.6 million, $37.5 million and $199.1 million of which was classified as short-term and long-term, respectively. The amount is amortized using the effective interest method. The fair value of this finance obligation approximated the carrying value as of March 31, 2022 and December 31, 2021.

In prior periods, the Company entered into sale/leaseback transactions that were accounted for as financing transactions and reported as part of finance obligations. The outstanding balance of finance obligations related to sale/leaseback transactions at March 31, 2022 was $16.1 million, $3.8 million and $12.3 million of which was classified as short-term and long-term, respectively on the accompanying consolidated balance sheet. The outstanding balance of this obligation at December 31, 2021 was $17.0 million, $4.5 million and $12.5 million of which was classified as short-term and long-term, respectively on the accompanying consolidated balance sheets. The fair value of this finance obligation approximated the carrying value as of both March 31, 2022 and December 31, 2021.

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~~Future minimum lease payments under operating and finance leases (with initial or remaining lease terms in excess of one year) as of September 30, 2021 were as follows (in thousands):~~

Rental expense for all operating leases was $9.6 million and $8.1 million for the three months ended September 30, 2021 and 2020, respectively. Rental expense for all operating leases was $25.8 million and $20.6 million for the nine months ended September 30, 2021 and 2020, respectively.

The gross profit on sale/leaseback transactions for all operating leases was $30.7 million and $25.2 million for the three months ended September 30, 2021 and 2020, respectively. The gross profit on sale/leaseback transactions for all operating leases was $66.1 million and $44.9 million for the nine months ended September 30, 2021 and 2020, respectively.

Right of use assets for sale/leaseback transactions obtained in exchange for new operating lease liabilities was $26.6 million and $24.6 million for the three months ended September 30, 2021 and 2020, respectively. Right of use assets for sale/leaseback transactions obtained in exchange for new operating lease liabilities was $62.5 million and $32.7 million for the nine months ended September 30, 2021 and 2020, respectively.

At September 30, 2021 and December 31, 2020, the right of use assets associated with operating leases was $200.2 million and $136.9 million, respectively. The accumulated depreciation for these right of use assets was $32.3 million and $19.9 million at September 30, 2021 and December 31, 2020, respectively.

At September 30, 2021 and December 31, 2020, the right of use assets associated with finance leases was $22.8 million and $5.7 million, respectively. The accumulated depreciation for these right of use assets was $757 thousand and $102 thousand at September 30, 2021 and December 31, 2020, respectively.

At September 30, 2021 and December 31, 2020, security deposits associated with sale/leaseback transactions were $3.3 million and $5.8 million, respectively, and were included in other assets in the consolidated balance sheets.

~~Other information related to the operating leases are presented in the following table:~~

Right of use assets obtained in exchange for new finance lease liabilities were $5.8 million and $0 for the three months ended September 30, 2021 and 2020, respectively. Right of use assets obtained in exchange for new finance lease liabilities were $17.9 million and $686 thousand for the nine months ended September 30, 2021 and 2020, respectively.

~~Table of Contents~~

~~Other information related to the finance leases are presented in the following table:~~

Nine months ended

Nine months ended

September 30, 2021

September 30, 2020
Cash payments (in thousands)
$
2,128

$
252
Weighted average remaining lease term (years)

4.57

6.51
Weighted average discount rate

6.9%

9.6%

~~17. Finance Obligation~~

The Company has sold future services to be performed associated with certain sale/leaseback transactions and recorded the balance as a finance obligation. The outstanding balance of this obligation at September 30, 2021 was $190.5million, $30.5 million and $160.0 million of which was classified as short-term and long-term, respectively, on the accompanying consolidated balance sheet. The outstanding balance of this obligation at December 31, 2020 was $157.7 million, $24.2 million and $133.5 million of which was classified as short-term and long-term, respectively. The amount is amortized using the effective interest method. The fair value of this finance obligation approximated the carrying value as of September 30, 2021 and December 31, 2020.

In prior periods, the Company entered into sale/leaseback transactions that were accounted for as financing transactions and reported as part of finance obligations. The outstanding balance of finance obligations related to sale/leaseback transactions at September 30, 2021 was $17.3 million, $5.1 million and $12.2 million of which was classified as short-term and long-term, respectively on the accompanying consolidated balance sheet. The outstanding balance of this obligation at December 31, 2020 was $23.9 million, $8.0 million and $15.9 million of which was classified as short-term and long-term, respectively on the accompanying consolidated balance sheets. The fair value of this finance obligation approximated the carrying value as of both September 30, 2021 and December 31, 2020.

Future minimum payments under finance obligations notes above as of ~~September 30, 2021~~March 31, 2022 were as follows (in thousands):


					Total						Total
		Sale of Future		Sale/leaseback	Finance		Sale of Future		Sale/leaseback		Finance
		revenue - debt		financings	Obligations		revenue - debt		financings		Obligations
Remainder of 2021	$	12,788	$	1,680	$	14,468
2022		50,632		4,975		55,607
Remainder of 2022							$	49,193	$	3,582	$	52,775
2023		50,632		3,148		53,780		65,591		3,531		69,122
2024		50,632		16,154		66,786		65,591		9,286		74,877
2025 and thereafter		86,614		—		86,614
2025								60,334		383		60,717
2026								43,611		383		43,994
2027 and thereafter								34,452		556		35,008
Total future minimum payments		251,298		25,957		277,255		318,772		17,721		336,493
Less imputed interest		(60,760)		(8,658)		(69,418)		(74,678)		(1,591)		(76,269)
Total	$	190,538	$	17,299	$	207,837	$	244,094	$	16,130	$	260,224

Other information related to the above finance obligations are presented in the following table:


		Nine months ended		Nine months ended	Three months ended		Three months ended
		September 30, 2021		September 30, 2020	March 31, 2022		March 31, 2021
Cash payments (in thousands)	$	41,325	$	31,693	$	17,409	$	12,816
Weighted average remaining term (years)		4.88		4.74		4.91		4.90
Weighted average discount rate		11.3%		11.3%		10.8%		11.2%

~~Table of Contents~~

~~18. Investments~~

The amortized cost, gross unrealized gains and losses, fair value of those investments classified as available-for-sale, and allowance for credit losses at September 30, 2021 are summarized as follows (in thousands):

Amortized

Gross

Gross

Fair

Allowance for

Cost

Unrealized Gains

Unrealized Losses

Value

Credit Losses
Corporate bonds
$
533,691

$
93

$
(3,695)

$
530,089

—
Commercial paper

35,719

76

—

35,795

—
Certificates of deposit

17,017

—

(13)

17,004

—
U.S. Treasuries

170,414

1

(537)

169,878

—
Total
$
756,841

$
170

$
(4,245)

$
752,766

$
—

~~The cost, gross unrealized gains and losses, and fair value of those investments classified as equity securities at September 30, 2021 are summarized as follows (in thousands):~~

September 30, 2021

Gross

Gross

Fair

Cost

Unrealized Gains

Unrealized Losses

Value
Fixed income mutual funds
$
77,766

$
—

$
(132)

$
77,634
Exchange traded mutual funds

70,167

—

(152)

70,015
Total
$
147,933

$
—

$
(284)

$
147,649

~~A summary of the amortized cost and fair value of investments classified as available-for-sale, by contractual maturity, as of September 30, 2021 is as follows (in thousands):~~

September 30, 2021

Amortized

Fair
Maturity:

Cost

Value
Within one year
$
447,479

$
446,011
After one through five years

309,362

306,755
Total
$
756,841

$
752,766

Accrued interest income was $4.9 million at September 30, 2021 and is included within the balance for prepaid expenses and other current assets in the unaudited interim condensed consolidated balance sheets.

19. Commitments and Contingencies

Restricted Cash

In connection with certain of the above noted sale/leaseback agreements, cash of ~~$301.3~~$252.6 million and $275.1 million was required to be restricted as security as of ~~September 30,~~March 31, 2022 and December 31, 2021, respectively, which restricted cash will be released over the lease term. As of ~~September 30,~~March 31, 2022 and December 31, 2021, the Company also had certain letters of credit backed by ~~restricted cash~~security deposits totaling ~~$137.7~~$339.7 million and $286.0 million, respectively, that are security for the above noted sale/leaseback agreements.

As of both March 31, 2022 and December 31, 2021, the Company had $67.7 million held in escrow related to the construction of certain hydrogen plants.

The Company also had $5.0 million of consideration held by our paying agent in connection with the Applied Cryo acquisition reported as restricted cash as of March 31, 2022, with a corresponding accrued liability on the Company’s unaudited interim condensed consolidated balance sheet. Additionally, the Company had $15.3 million in restricted cash as collateral resulting from the Frames acquisition.

Litigation

Legal matters are defended and handled in the ordinary course of business. Liabilities for loss contingencies arising from claims, assessments, litigation, fines, and penalties and other sources are recorded when it is probable that a liability has been incurred and the amount can be reasonably estimated. Legal costs incurred in connection with loss contingencies are expensed as incurred. The Company has not recorded any accruals related to any legal matters.

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Table of Contents

Concentrations of Credit Risk

Financial instruments that potentially subject the Company to credit risk consist principally of cash, cash equivalents, restricted cash, accounts receivable and marketable securities. Cash and restricted cash are maintained in accounts with financial institutions, which, at times may exceed the Federal depository insurance coverage of ~~$0.25 million.~~$250 thousand. The Company has not experienced losses on these accounts and management believes, based upon the quality of the financial institutions, that the credit risk with regard to these deposits is not significant. The Company’s available-for-sale securities consists primarily of investments in ~~commercial paper,~~ U.S. Treasury securities and short-term high credit quality corporate debt securities. Equity securities are comprised of fixed income and equity market index mutual funds.

Concentrations of credit risk with respect to receivables exist due to the limited number of select customers with whom the Company has commercial sales arrangements. To mitigate credit risk, the Company performs appropriate evaluation of a prospective customer’s financial condition.

At ~~September 30, 2021, 1 customer~~March 31, 2022, 2 customers comprised ~~79.6%~~30.0% of the total accounts receivable balance. At December 31, ~~2020, 3 customers~~2021, 1 customer comprised ~~73.9%~~approximately 46.6% of the total accounts receivable balance.

For purposes of assigning a customer to a sale/leaseback transaction completed with a financial institution, the Company considers the end user of the assets to be the ultimate customer. For the three ~~and nine~~ months ended ~~September 30, 2021, 80.1% and 80.6%,~~March 31, 2022, 67.0% of total consolidated revenues were associated with ~~two and three customers, respectively.~~5 customers. For the three ~~and nine~~ months ended ~~September 30, 2020, 83.0% and 71.8%~~March 31, 2021, 71.2% of total consolidated revenues were associated primarily with ~~three and two customers, respectively.~~3 customers.

20. Employee Benefit Plans

2011 and 2021 Stock Option and Incentive Plan

~~On May 12, 2011,~~The Company has issued stock-based awards to employees and members of its Board of Directors (the “Board”) consisting of stock options and restricted stock awards. The Company accounts for all stock-based awards to employees and members of the Board as compensation costs in the consolidated financial statements based on their fair values measured as of the date of grant. These costs are recognized over the requisite service period. Stock-based compensation costs recognized, excluding the Company’s ~~stockholders approved the 2011 Stock Option~~401(k) match and Incentive Plan (the “2011 Plan”). The 2011 Plan provided for the issuance of up to a maximum number of shares of common stock equal to the sum of (i) 1,000,000, plus (ii) the number of shares of common stock underlying any grants pursuant to the 2011 Plan or the Plug Power Inc. 1999 Stock Option and Incentive Plan that are forfeited, canceled, repurchased or are terminated (other than by exercise). The sharesquarterly board compensation, were issued pursuant to stock options, stock appreciation rights, restricted stock awards and certain other equity-based awards granted to employees, directors and consultants of the Company. NaN further grants may be made under the 2011 Plan after May 12, 2021. Through various amendments to the 2011 Plan approved by the Company’s stockholders, the number of shares of the Company’s common stock authorized for issuance under the 2011 Plan had been increased to 42.4 million. The Company recorded expenses of approximately $12.7$40.8 million and ~~$2.3~~$8.5 million for the three months ended ~~September 30,~~March 31, 2022 and March 31, 2021, respectively. The methods and ~~2020, respectively,~~assumptions used in ~~connection~~the determination of the fair value of stock-based awards are consistent with ~~the 2011 Plan. The Company recorded expense of approximately $32.3 million and $7.3 million, for the nine months ended September 30,~~those described in our 2021 and 2020, respectively, in connection with the 2011 Plan. In July 2021, the 2021 Stock Option Incentive Plan (the “2021 Plan”) was approved by the Company’s stockholders. The 2021 Plan provides for the issuance of up to a maximum number of shares of common stock equal to the sum of (i) 22,500,000 shares, plus 473,491 shares remaining under the 2011 Plan that were rolled into the 2021 Plan, plus (iii) shares underlying any awards under the 2011 Plan that are forfeited, canceled, cash-settled or otherwise terminated, other than by exercise.Form 10-K.

Option Awards

The Company issues options that are time and performance-based awards. All option awards are determined to be classified as equity awards.

Service Stock Options Awards

The following table reflects the service stock option activity for the three months ended March 31, 2022:


				Weighted
		Weighted		Average
		Average		Remaining	Aggregate
		Exercise		Contractual	Intrinsic
	Shares	Price		Terms	Value
Options outstanding at December 31, 2021	9,786,909	$	11.65	7.7	$	172,412
Granted	451,500		23.83	—		—
Exercised	(56,692)		5.13	—		—
Forfeited	(16,717)		13.16	—		—
Options outstanding at March 31, 2022	10,165,000	$	12.20	7.5	$	176,301
Options exercisable at March 31, 2022	4,900,538		5.96	6.3		114,080
Options unvested at March 31, 2022	5,264,462	$	18.03	8.7	$	62,221

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Table of Contents

~~To date, options granted under the 2011 and 2021 Plans have vesting provisions ranging from~~ ~~one~~ to three years in duration and expire ten years after issuance. Options for employees issued under this plan generally vest in equal annual installments over three years and expire ten years after issuance Options granted to members of the Board generally vest one year after issuance. The Company estimates the fair value of the service stock options using a Black-Scholes valuation model, and the resulting fair value is recorded as compensation cost on a straight-line basis over the option vesting period. Key inputs and assumptions used to estimate the fair value of the service stock options include the grant price of the award, the expected option term, volatility of the Company’s stock, an appropriate risk-free rate, and the Company’s dividend yield. Estimates of fair value are not intended to predict actual future events or the value ultimately realized by employees who receive equity awards, and subsequent events are not indicative of the reasonableness of the original estimates of fair value made by the Company. The assumptions made for purposes of estimating fair value under the Black-Scholes model for the 1,870,835 and 3,429,549 service stock options granted during the nine months ended September 30, 2021 and 2020, respectively, were as follows:

September 30,

September 30,

2021

2020
Expected term of options (years)

3-5

6
Risk free interest rate

0.61% - 1.05%

0.37% - 1.37%
Volatility

72.46% - 75.52%

64.19% - 66.94%

~~There was 0 expected dividend yield for the service stock options granted.~~

The Company has historically used the simplified method in determining its expected term of all its service stock option grants in all periods presented. The simplified method was used because the Company did not believe historical exercise data provided a reasonable basis for the expected term of its grants, primarily as a result of the limited number of service stock option exercises that have historically occurred. Due to the recent increase in exercise activity at the Company, beginning in the second quarter of 2021, the expected term is based on the Company’s historical experience with employee early exercise behavior. The estimated stock price volatility was derived from the Company’s actual historic stock prices over the past five years, which represents the Company’s best estimate of expected volatility.

~~The following table reflects the service stock option activity for the nine months ended September 30, 2021:~~

Weighted


Weighted

Average

Average

Remaining

Aggregate

Exercise

Contractual

Intrinsic

Shares

Price

Terms

Value
Options outstanding at December 31, 2020

10,284,498

$
5.78

7.8

$
289,316
Granted

1,870,835

32.48

—

—
Exercised

(1,911,112)

2.78

—

—
Forfeited

(15,833)

21.35

—

—
Expired

(4,100)

6.10

—

—
Options outstanding at September 30, 2021

10,224,288

$
11.21

7.9

$
146,581
Options exercisable at September 30, 2021

5,045,168

4.46

6.7

106,360
Options unvested at September 30, 2021

5,179,120

$
17.77

9.0

$
40,221

The weighted average grant-date fair value of the service stock options granted during the three months ended ~~September 30,~~March 31, 2022 and 2021 was $15.34 and ~~2020 was $15.82 and $7.45,~~$31.78, respectively. The ~~weighted average grant-date~~total intrinsic fair value of ~~the~~ service stock options ~~granted~~exercised during the ~~nine~~three months ended ~~September 30,~~March 31, 2022 and 2021 was $1.1 million and ~~2020 was $19.76 and $7.21,~~$1.0 million, respectively. The total fair value of the service stock options that vested during the three months ended ~~September 30,~~March 31, 2022 and 2021 ~~and 2020~~ was approximately ~~$10.4~~$5.6 million and ~~$5.2 million, respectively. The total fair value of the service stock options that vested during the nine months ended September 30, 2021 and 2020 was approximately $10.9 million and $5.9~~$2.9 million, respectively.

Compensation cost associated with service stock options represented approximately ~~$4.2~~$5.9 million and ~~$1.1~~$3.3 million of the total share-based payment expense recorded for the three months ended ~~September 30,~~March 31, 2022 and 2021, ~~and September 30,~~

~~Table of Contents~~

2020, respectively. Compensation cost associated with service stock options represented approximately $11.9 million and 4.1 million of the total share-based payment expense recorded for the nine months ended September 30, 2021 and September 30, 2020, respectively. As of ~~September 30,~~March 31, 2022 and 2021 ~~and 2020~~ there was approximately ~~$50.2~~$47.0 million and ~~$8.2~~$40.5 million, respectively, of unrecognized compensation cost related to service stock option awards to be recognized over the ~~next three~~weighted average remaining period of 2.13 years.

Performance Stock Option Awards

In September 2021, the Compensation Committee approved the grant of performance stock options to the Company’s Chief Executive Officer and certain other executive officers. These performance stock options are subject to both performance-based conditions tied to the achievement of stock price hurdles and time-based vesting; therefore, a Monte Carlo Simulation was utilized to determine the grant date fair value with the associated expense recognized over the requisite service period. Up to one-third (1/3) the performance stock options will vest and become exercisable on each of the first three anniversaries of the grant date, provided that the volume weighted average price of the Company’s common stock during any 30 consecutive trading day period in the three year performance period following the grant date of the stock options (“VWAP”) equals or exceeds certain levels. For the Company’s Chief Executive Officer, 25% of his performance stock options will be deemed to have satisfied the performance-based conditions and will be eligible to be exercised over time if the VWAP equals or exceeds $35; an additional 25% of his options will be deemed to have satisfied the performance-based condition and will be eligible to be exercised if the VWAP equals or exceeds $50; an additional 16.675% of the options will be deemed to have satisfied the performance-based condition and will be eligible to be exercised if the VWAP equals or exceeds $65; an additional 16.65% of the options will be deemed to have satisfied the performance-based condition and will be eligible to be exercised if the VWAP equals or exceeds $80; and the remaining 16.675% of the options will be deemed to have satisfied the performance-based condition and will be eligible to be exercised if the VWAP equals or exceeds $100. There will be no interpolation for the Chief Executive Officer’s performance stock option if the VWAP falls between any two stock price hurdles, unless in the event of a change in control. For executive officers other than the Chief Executive Officer, 25% of the performance stock options will be deemed to have satisfied the performance-based condition and will be eligible to be exercised if the VWAP equals $35; an additional 25% of the options will be deemed to have satisfied the performance-based condition and will be eligible to be exercised if the VWAP equals $50; and the remaining 50% of the options will be deemed to have satisfied the performance-based condition and will be eligible to be exercised if the VWAP equals or exceeds $100. If the VWAP falls between two of the stock price hurdles, an incremental number of options will become exercisable based on linear interpolation in $1 increments. Failure to achieve any of the stock price hurdles applicable to a performance stock option during the three-year performance period will result in the applicable options not becoming exercisable. The performance-based stock options have a maximum term of seven years from the grant date.

Key inputs and assumptions used to estimate the fair value of performance stock options include the grant price of the awards, the expected option term, VWAP hurdle rates, volatility of the Company’s stock, an appropriate risk-free rate, and the Company’s dividend yield. Estimates of fair value are not intended to predict actual future events or the value ultimately realized by employees who receive equity awards, and subsequent events are not indicative of the reasonableness of the original estimates of fair value made by the Company.

~~The following table presents key assumptions used to estimate the fair value of the performance stock option awards granted in 2021:~~


		~~September 30,~~
		~~2021~~
~~Remaining VWAP performance period (years)~~		3
~~Risk- free interest rate~~		~~1.12%~~
~~Expected volatility~~		~~70.00%~~
~~Closing stock price on grant date~~		~~$ 26.92~~

The following table reflects the performance stock option award activity for the nine months ended September 30, 2021. Solely for the purposes of this table, the number of performance options is based on participants earning the maximum number of performance options (i.e 200% of the target number of performance options).

~~Table of Contents~~

Weighted


Weighted

Average

Average

Remaining

Aggregate

Exercise

Contractual

Intrinsic

Shares

Price

Terms

Value
Granted

14,560,000

26.92

—

—
Options outstanding at September 30, 2021

14,560,000

$
26.92

6.98

$
—
Options unvested at September 30, 2021

14,560,000

$
26.92

6.98

$
—

The weighted average grant-date fair value of performance stock options granted during the three months and nine months ended September 30, 2021 was $12.78. There were 0 performance stock options that were exercised during the three months and nine months ended September 30, 2021.

Compensation cost associated with performance stock options represented approximately ~~$2.0~~$25.1 million and $0 of the total share-based payment expense recorded for the three months ended March 31, 2022 and ~~nine months ended September 30, 2021.~~2021, respectively. As of ~~September, 30, 2021,~~March 31, 2022, there was approximately ~~$183.7~~$125.1 million of unrecognized compensation cost related to performance stock option awards to be recognized over the ~~next~~weighted average remaining period of 2.48 years. There were 0 new grants of performance stock option awards for the three ~~years.~~months ended March 31, 2022.

Restricted Stock Awards

~~Restricted stock awards generally vest in equal installments over a period of~~ ~~one~~ to three years. Restricted stock awards are valued based on the closing price of the Company’s common stock on the date of grant, and compensation cost is recorded on a straight-line basis over the share vesting period. The Company recorded expense associated with its restricted stock awards of approximately ~~$6.5~~$9.8 million and ~~$1.2~~$5.2 million for the three months ended ~~September 30,~~March 31, 2022 and 2021, ~~and 2020, respectively. The Company recorded expense associated with its restricted stock awards of approximately $18.5 million and $3.2 million, for the nine months ended September 30, 2021 and 2020,~~ respectively. Additionally, for the ~~nine~~three months ended ~~September 30,~~March 31, 2022 and 2021, ~~and 2020,~~ there was ~~$81.2~~$83.7 million and ~~$6.2~~$64.1 million, respectively, of unrecognized compensation cost related to restricted stock awards to be recognized over the ~~next three~~weighted average period of 2.1 years.

A summary of restricted stock activity for the ~~year~~three months ended ~~September 30, 2021~~March 31, 2022 is as follows (in thousands except share amounts):




Aggregate



Weighted

Aggregate

Intrinsic

Average Grant Date

Intrinsic

Shares

Value

Shares

Fair Value

Value

Unvested restricted stock at December 31, 2020

5,874,642

$
—

Unvested restricted stock at December 31, 2021

4,851,873

$
21.59

$
—

Granted

1,812,856

—

802,500

23.86

—

Vested

(2,713,789)

—

(196,832)

41.93

—

Forfeited

(13,333)

—

(18,334)

13.20

—

Unvested restricted stock at September 30, 2021

4,960,376

$
126,688

Unvested restricted stock at March 31, 2022

5,439,207

$
18.31

$
155,616

The weighted average grant-date fair value of the restricted stock awards granted during the three months ended March 31, 2022 and 2021, was $3.9 million and $457 thousand, respectively. The total fair value of restricted stock awards vested for the three months ended March 31, 2022, and 2021 were $23.86 million and $43.89 million, respectively.
401(k) Savings & Retirement Plan

The Company offers a 401(k) Savings & Retirement Plan to eligible employees meeting certain age and service requirements. This plan permits participants to contribute 100% of their salary, up to the maximum allowable by the Internal Revenue Service regulations. Participants are immediately vested in their voluntary contributions plus actual earnings or less actual losses thereon. Participants are vested in the Company’s matching contribution based on years of service completed. Participants are fully vested upon completion of three years of service. During 2018, the Company began funding its matching contribution in a combination of cash and common stock. The Company issued ~~54,531~~96,539 shares of common stock and ~~368,903~~12,513 shares of common stock pursuant to the Plug Power Inc. 401(k) Savings & Retirement Plan during the ~~nine~~three months ended ~~September 30,~~March 31, 2022 and 2021, ~~and 2020,~~ respectively.

The Company’s expense for this plan was approximately ~~$1.1~~$2.2 million, and ~~$0.6~~$1.3 million for the three months ended ~~September 30,~~March 31, 2022 and 2021, ~~and 2020,~~ respectively. ~~The Company’s expense for this plan was approximately $3.4 million, and $1.9 million for the nine months ended September 30, 2021 and 2020, respectively.~~

Non-Employee Director Compensation

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~~Non-Employee Director Compensation~~

~~Each non-employee director is paid an annual retainer for his or her service, in the form of either cash or stock compensation.~~ The Company granted ~~3,685~~3,290 shares of common stock and ~~4,146~~2,653 shares of common stock to non-employee directors as compensation for the three months ended ~~September 30,~~March 31, 2022 and 2021, and 2020, respectively. The Company granted 8,923 shares of common stock and 26,636 shares of common stock to non-employee directors as compensation for the nine months ended September 30, 2021 and 2020, respectively. All common stock issued is fully vested at the time of issuance and is valued at fair value on the date of issuance. The Company’s share-based compensation expense in connection with non-employee director compensation was approximately ~~$99~~$94 thousand and ~~$56~~$85 thousand for the three months ended ~~September 30,~~March 31, 2022 and 2021, and 2020, respectively. The Company’s share-based compensation expense in connection with non-employee director compensation was approximately $277 thousand and $167 thousand for the nine months ended September 30, 2021 and 2020, respectively.

21. Segment Reporting

Our organization is managed from a sales perspective on the basis of “go-to-market” sales channels, emphasizing shared learning across end user applications and common supplier/vendor relationships. These sales channels are structured to serve a range of customers for our products and services. As a result of this structure, we concluded that we have 1 operating and reportable segment — the design, development and sale of fuel cells and hydrogen producing equipment. Our chief executive officer was identified as the chief operating decision maker (CODM). All significant operating decisions made by management are largely based upon the analysis of Plug Power Inc. on a total company basis, including assessments related to our incentive compensation plans.

Revenues

Long-Lived Assets as of

Three Months Ended

Three Months Ended

March 31, 2022

March 31, 2021

March 31, 2022

December 31, 2021

North America
$
113,678

$
69,646

$
665,992

$
570,778
Other

27,126

2,312

5,796

2,778
Total
$
140,804

$
71,958

$
671,788

$
573,556

22. Subsequent Events

In November 2021, the Company entered into a signing protocol to acquire Frames Group (“Frames”), a leader in engineering, process and systems integration serving the energy sector. The purchase price is approximately €115 million, of which €30 million is based on future earnouts over the next four years from the completion date. Plug Power will leverage Frames’ capabilities as well as its existing network of suppliers and contract manufacturing facilities to deliver electrolyzer solutions of all sizes, from one megawatt (MW) containerized solutions to solutions for 100 MW-1,000 MW standalone plants or integrated into customers’ processes. The acquisition is expected to be completed by the end of the year, and is subject to customary closing conditions, including receipt of Dutch works council advice.

On ~~October 14, 2021,~~April 28, 2022, the Company and its wholly-owned subsidiary Plug Power Hydrogen Holdings, Inc. entered into a definitive agreement for the acquisition of Applied Cryo Technologies, Inc. for a purchase price of approximately $170 million, of which $40 million will be in stock and $30 million will be based on future earnouts over the next two and half years. Applied Cryo Technologies, Inc. isOlin Corporation, a leading ~~provider~~vertically integrated chlor alkali producer and marketer, announced the signing of ~~technology, equipment and services for~~a memorandum of understanding with the ~~transportation, storage and distribution of liquified hydrogen, oxygen, argon, nitrogen and other cryogenic gases. The acquisition is expected~~intention to close during the fourth quarter of 2021 and is subject to customary closing conditions, including receipt of all approvals or the termination or expiration of all waiting periods required under applicable antitrust laws.

~~In October 2021, the Company and SK E&S Co., Ltd., an energy company affiliated with SK Holdings Co., Ltd., formed H2A, which is~~create a joint venture ~~designed~~ to ~~accelerate~~produce and market green hydrogen to support growing fuel cell demand in the ~~use of~~global hydrogen ~~as an alternative energy source in Asian markets.~~economy.

Item 2 — Management’s Discussion and Analysis of Financial Condition and Results of Operations

The following discussion should be read in conjunction with our accompanying unaudited interim condensed consolidated financial statements and notes thereto included within this report, and our audited and notes thereto included in our ~~2020 19-K.~~2021 10-K. In addition to historical information, this Quarterly Report on Form 10-Q and the following discussion contain statements that are not historical facts and are considered forward-looking within the meaning of Section 27A of the Securities Act, ~~of 1933, as amended (the “Securities Act”),~~ and Section 21E of the Securities Exchange Act of 1934, as amended (the “Exchange Act”). These forward-looking statements contain projections of our future results of operations or of our financial position or state other forward-looking information. In some cases, you can identify these statements by forward-looking words such as “anticipate,” “believe,” “could,” “continue,” “estimate,” “expect,” “intend,” “may,” “should,” “will,” “would,” “plan,” “projected” or the negative of such words or other similar words or phrases. We believe that it is important to communicate our future expectations to our investors. However, there may be events in the future that we are not able to accurately predict or control and that may cause our actual results to differ materially from the expectations we describe in our forward-looking statements. Investors are cautioned not to unduly rely on forward-looking statements because they involve risks and uncertainties, and actual results may differ materially from those discussed as a result of various factors, including, but not limited to:
● the risk that we continue to incur losses and might never achieve or maintain profitability;

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●

the risk that we will need to raise additional capital to fund our operations and such capital may not be available to us;

●

the risk of dilution to our stockholders and/or stock price should we need to raise additional capital;

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●

the risk that our lack of extensive experience in manufacturing and marketing products may impact our ability to manufacture and market products on a profitable and large-scale commercial basis;

●

the risk that unit orders may not ship, be installed and/or converted to revenue, in whole or in part;

●

the risk that a loss of one or more of our major customers, or if one of our major customers delays payment of or is unable to pay its receivables, a material adverse effect could result on our financial condition;

●

the risk that a sale of a significant number of shares of stock could depress the market price of our common stock;

●

the risk that our convertible senior notes, if settled in cash, could have a material effect on our financial results;

●

the risk that our convertible note hedges may affect the value of our convertible senior notes and our common stock;

●

the risk that negative publicity related to our business or stock could result in a negative impact on our stock value and profitability;

●

the risk of potential losses related to any product liability claims or contract disputes;

●

the risk of loss related to an inability to remediate the material ~~weakness~~weaknesses identified in internal control over financial reporting as ~~of December 31, 2020,~~disclosed in this Quarterly Report on Form 10-Q, or inability to otherwise maintain an effective system of internal control;

●

the risk that the ~~determination to restate the prior period~~restatement of our financial statements as of and for the years ended December 31, 2019 and 2018 and for each of the quarterly periods ended March 31, 2020 and 2019, June 30, 2020 and 2019, September 30, 2020 and 2019 could negatively affect investor confidence and raise reputational issues;

●

the risk of loss related to an inability to maintain an effective system of internal controls;

●

our ability to attract and maintain key personnel;

●

the risks related to the use of flammable fuels in our products;

●

the risk that pending orders may not convert to purchase orders, in whole or in part;

●

the cost and timing of developing, marketing and selling our products;

●

the risks of delays in or not completing our product development goals;

●

the risks involved with participating in joint ventures;

●

our ability to obtain financing arrangements to support the sale or leasing of our products and services to customers;

●

our ability to successfully pursue new business ventures;

●

our ability to achieve the forecasted gross margin on the sale of our products;

●

the cost and availability of fuel and fueling infrastructures for our products;

●

the risks, liabilities, and costs related to environmental, health and safety matters;

●

the risk of elimination of government subsidies and economic incentives for alternative energy products;

●

market acceptance of our products and services, including GenDrive, GenSure and GenKey systems;

●

our ability to establish and maintain relationships with third parties with respect to product development, manufacturing, distribution and servicing, and the supply of key product components;

●

the cost and availability of components and parts for our products;

●

the risk that possible new tariffs or sanctions could have a material adverse effect on our business;

●

our ability to develop commercially viable products;

●

our ability to reduce product and manufacturing costs;

●

our ability to successfully market, distribute and service our products and services internationally;

●

our ability to improve system reliability for our products;

●

competitive factors, such as price competition and competition from other traditional and alternative energy companies;

●

our ability to protect our intellectual property;

●

the risk of dependency on information technology on our operations and the failure of such technology;

●

the cost of complying with current and future federal, state and international governmental regulations;

●

our subjectivity to legal proceedings and legal compliance;

●

the risks associated with past and potential future acquisitions;

●

the risks associated with geopolitical and global economic uncertainty, including the conflict between Russia and Ukraine, inflationary pressures, rising interest rates, and supply chain disruptions; and

●

the volatility of our stock price.

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The risks included here are not exhaustive, and additional factors could adversely affect our business and financial performance, including factors and risks discussed in the section titled “Risk Factors” included under Part I, Item 1A, ~~below.~~in our 2021 10-K. Moreover, we operate in a very competitive and rapidly changing environment. New risk factors emerge from time to time, and it is not possible for management to predict all such risk factors, nor can we assess the impact of all such risk factors on our business or the extent to which any factor, or combination of factors, may cause actual results to differ materially from these contained in any forward-looking statements. While forward-looking statements reflect our good faith beliefs, they are not guarantees of future performance. These forward-looking statements speak only as of the date on which the statements were made. Except as may be required by applicable law, we do not undertake or intend to update any forward-looking statements after the date of this Quarterly Report on Form 10-Q.

References in this Quarterly Report on Form 10-Q to “Plug, ~~Power,~~” the “Company,” “we,” “our” or “us” refer to Plug Power Inc., including as the context requires, its subsidiaries.

Overview

Plug ~~Power~~ is facilitating the paradigm shift to an increasingly electrified world by innovating cutting-edge hydrogen and fuel cell solutions. ~~In our core business,~~While we ~~provide and~~ continue to develop ~~commercially viable~~commercially-viable hydrogen and fuel cell product solutions to replace lead-acid and lithium batteries in electric material handling vehicles and industrial trucks for some of the world’s largest retail-distribution and manufacturing ~~businesses.~~businesses, we have expanded our offerings to support a variety of commercial operations that can be powered with green hydrogen. We also provide electrolyzers that allow customers — such as refineries, producers of chemicals, steel and fertilizer and commercial refueling stations — to generate hydrogen on-site. Additionally, we intend for our electrolyzers to be used to generate green hydrogen within Plug’s own plants that will then be sold to customers. We are focusing our efforts on industrial mobility applications, including electric forklifts and electric industrial vehicles, at multi-shift high volume manufacturing and high throughput distribution sites where we believe our products and services provide a unique combination of productivity, flexibility, and environmental benefits. Additionally, we manufacture and sell fuel cell products to replace batteries and diesel generators in stationary ~~backup~~back-up power ~~applications. These products have proven valuable with~~applications for telecommunications, transportation, and utility ~~customers as robust, reliable,~~customers. Plug supports these markets with an ecosystem of integrated products that make, transport, handle, dispense and ~~sustainable power solutions.~~

Part of our long-term plan includes Plug Power penetrating the on-road vehicle market and large-scale stationary market. Plug Power’s formation of a joint venture with Renault in Europe and the announced future joint venture with SK Group in Asia not only support this goal but are expected to provide us with a more global footprint. Plug has been successful with acquisitions, strategic partnerships, and joint ventures, and we plan to continue this mix. For example, we expect our relationships with Brookfield and Apex to provide us access to low-cost renewable energy, which is critical to produce low-cost greenuse hydrogen.

Our current products and services include:
~~GenDrive:~~
GenDrive: GenDrive is our hydrogen fueled ~~PEM~~Proton Exchange Membrane (“PEM”) fuel cell system, providing power to material handling electric vehicles, including ~~class~~Class 1, 2, 3 and 6 electric forklifts, Automated Guided Vehicles ~~(“AGVs”)~~(AGVs), and ground support ~~equipment;~~equipment.
~~GenFuel:~~
GenFuel: GenFuel is our liquid hydrogen fueling delivery, generation, storage, and dispensing ~~system;~~system.
~~GenCare:~~
GenCare: GenCare is our ongoing ~~‘internet~~“Internet of ~~things’~~Things”-based maintenance and on-site service program for GenDrive fuel cell systems, GenSure fuel cell systems, GenFuel hydrogen storage and dispensing products and ProGen fuel cell ~~engines;~~engines.
~~GenSure:~~
GenSure: GenSure is our stationary fuel cell solution providing scalable, modular PEM fuel cell power to support the backup and grid-support power requirements of the telecommunications, transportation, and utility sectors; GenSure High Power Fuel Cell Platform will support large scale stationary power and data center ~~markets;~~markets.
~~GenKey:~~
GenKey: GenKey is our vertically integrated “turn-key” solution combining either GenDrive or GenSure fuel cell power with GenFuel fuel and GenCare aftermarket service, offering complete simplicity to customers transitioning to fuel cell ~~power;~~power.

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~~ProGen:~~ProGen: ProGen is our fuel cell stack and engine technology currently used globally in mobility and stationary fuel cell systems, and as engines in electric delivery vans. This includes the Plug ~~“MEA”~~membrane electrode assembly (“MEA”), a critical component of the fuel cell stack used in zero-emission fuel cell electric vehicle ~~engines; and~~engines.

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GenFuel ~~Electrolyzers:~~ electrolyzers: GenFuel electrolyzers are modular, scalable hydrogen generators optimized for clean hydrogen production. Electrolyzers generate hydrogen from water using electricity and a special membrane and “green” hydrogen is generated by using renewable energy inputs, such as solar or wind power.

We provide our products and solutions worldwide through our direct ~~product~~ sales force, and by leveraging relationships with ~~“OEMs”~~original equipment manufacturers (“OEMs”) and their dealer networks. Plug ~~Power~~ is currently targeting Asia, Australia, Europe, Middle East and ~~Europe~~North America for expansion in adoption. Europe has rolled out ambitious targets for the hydrogen economy and Plug ~~Power~~ is ~~executing~~seeking to execute on its strategy to become one of the European leaders. This includes a targeted account strategy for material handling, ~~as well as~~ securing strategic partnerships with European OEMs, energy companies, utility leaders and accelerating our electrolyzer business. Our global strategy includes leveraging a network of integrators or contract manufacturers. We manufacture our commercially viable products in Latham, New York, Rochester, New York, Houston, Texas and Spokane, Washington and support liquid hydrogen generation and logistics in Charleston, Tennessee.

~~Our wholly-owned subsidiary,~~Part of our long-term plan includes Plug ~~Power France, created~~penetrating the on-road vehicle market and large-scale stationary market. Plug’s formation of joint ventures with HyVia and Acciona Plug S.L. in Europe and HALO Hydrogen Co, Ltd. in Asia not only support this goal but are expected to provide us with a more global footprint. Plug has been successful with acquisitions, strategic partnerships and joint ~~venture~~ventures, and we plan to continue this mix. For example, we expect our relationship with ~~Renault SAS (“Renault”) named HyVia, a French société par actions simplifiée (“HyVia”) in the second quarter of 2021. HyVia plans~~Apex to ~~manufacture and sell fuel cell powered electric light commercial vehicles (“FCELCVs”) and~~provide us access to ~~supply hydrogen fuel and fueling stations~~low-cost renewable energy, which is critical to ~~support the FCE-LCV market, in each case primarily in Europe. HyVia is owned 50% by Plug Power France and 50% by Renault.~~low-cost green hydrogen.

Recent Developments

COVID-19 Update
As a result of the COVID-19 pandemic outbreak in March 2020, state governments—including those in New York and Washington, where our manufacturing facilities are located—issued orders requiring businesses that do not conduct essential services to temporarily close their physical workplaces to employees and customers.

Starting on January 3, 2022, all U.S. based employees, including temporary employees are required to either be vaccinated against COVID-19, or be subject to weekly COVID-19 testing in an effort to stop the spread of COVID-19 and continue to protect our workforce. As of February 28, 2022, we discontinued the weekly testing for unvaccinated employees and removed the mask requirement for fully vaccinated employees. Our positive cases declined significantly; and that, combined with guidance from state and federal agencies resulted in the change in practice. We continue to monitor the situation, and remain prepared to adjust accordingly. With trends of COVID-19 continually decreasing, on March 25, 2022, we transitioned our face-covering requirement to voluntary for all employees and visitors. Additionally, we removed our daily COVID-19 questionnaire and discontinued temperature monitoring as a ~~result,~~daily requirement at our facilities. Employees are still expected to remain home if they are not feeling well and should contact our COVID team for future guidance. Furthermore, we ~~had put in place a number of protective measures in response to the COVID-19 outbreak, which included the canceling of~~have resumed all commercial air travel and all other non-critical travel, ~~requesting that~~while also allowing employees ~~limit non-essential~~to resume their personal ~~travel, eliminating all but essential~~travel. We have enabled third-party access to our facilities, ~~enhancing~~and are continuing our ~~facilities’~~normal janitorial and sanitary ~~procedures, encouraging employees~~procedures. We no longer are requiring staggered shifts in our manufacturing facilities and are offering hybrid work schedules to ~~work from home to the extent their~~those whose job function enabled them to do ~~so, encouraging the use of virtual employee meetings, and providing staggered shifts and social distancing measures for those employees associated with manufacturing and service operations.~~

In June 2021, in accordance with revised CDC guidelines and where permitted by state law, employees who were fully vaccinated against COVID-19 and have been through Plug Power’s certification process, were permitted to enter Plug Power facilities without a face covering. Individuals inside Plug Power facilities who did not wish to go through the certification process were required to wear proper face coverings and continued to maintain social distancing of six feet or greater. In states where the guidelines for face coverings was still government mandated, Plug Power complied with the state and local jurisdictions and enforced face mask usage, as well as social distancing at our sites. In early August 2021, we adjusted our guidance as a result of an influx of COVID-19 cases and began requiring all employees and visitors regardless of vaccination status to wear a face-covering at all times while within a Plug Power facility, and strongly encouraged social distancing. We continue to provide enhanced janitorial and sanitary procedures, encourage employees to work from home to the extent their job function enables them to do so, and encourage the use of virtual employee meetings.
so.
We cannot predict at this time the full extent to which COVID-19 will impact our business, results, and financial condition, which will depend on many factors. We are staying in close communication with our manufacturing facilities, employees, customers, suppliers, and partners, and acting to mitigate the impact of this dynamic and evolving situation, but there is no guarantee that we will be able to do so. Many of the parts for our products are sourced from suppliers in China and the manufacturing situation in China remains variable. Supply chain disruptions could reduce the availability

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of key components, increase prices or both, as the COVID-19 pandemic has caused significant challenges for global supply chains resulting primarily in transportation delays. These transportation delays have caused incremental freight charges, which have negatively impacted our results of operations. We expect that these challenges will continue to have an impact on our businesses for the foreseeable future. Certain of our customers, such as Walmart, significantly increased their use of units and hydrogen fuel consumption as a result of COVID-19. In the year ended December 31, 2021, our services and PPA margins were negatively impacted by incremental service costs associated with increased usage of units at some of our primary customer sites.

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We continue to take proactive steps to limit the impact of these challenges and are working closely with our suppliers and transportation vendors to ensure availability of products and implement other cost savings initiatives. In addition, we continue to invest in our supply chain to improve its resilience with a focus on automation, dual sourcing of critical components and localized manufacturing when feasible. To date, there has been limited disruption to the availability of our products, though it is possible that more significant disruptions could occur if these supply chain challenges continue.

~~Strategic~~Inflation, Material Availability and ~~Other Activities~~Labor Shortages

~~Entry into Definitive Agreement~~

In ~~November 2021,~~the first quarter of 2022, we experienced higher than expected commodity costs and supply chain costs, including logistics, procurement, and manufacturing costs, largely due to inflationary pressures. We expect this cost inflation to remain elevated through at least the remainder of 2022.

Our operations require significant amounts of necessary parts and raw materials. From time to time, the Company ~~entered into a signing protocol~~may encounter difficulties in obtaining certain raw materials or components necessary for production due to ~~acquire Frames Group (“Frames”), a leader~~supply chain constraints and logistical challenges, which may also negatively impact the pricing of materials and components sourced or used by the Company. Additionally, conflicts abroad, such as the Russia-Ukraine conflict, may potentially contribute to issues related to supply chain disruptions and inflation impacts. While the Company does not currently anticipate any significant, broad-based difficulties in ~~engineering, process~~obtaining raw materials or components necessary for production, there have been supply chain and ~~systems integration serving~~logistical challenges that have resulted in supply constraints and commodity price increases on certain raw materials and components used by the energy sector. The purchase price is approximately €115 million, of which €30 million is based on future earnouts over the next four years from the completion date. Plug Power will leverage Frames’ capabilitiesCompany in production, as well as ~~its existing network~~increased prices for freight and logistics, including air, sea and ground freight. Consequently, the Company may experience supply shortages for raw materials or components in the future, which could be further exacerbated by increased commodity prices as a result of ~~suppliers~~additional inflationary pressures. Although we have offset a portion of these increased costs through price increases and ~~contract manufacturing facilities~~operational efficiencies to ~~deliver electrolyzer solutions of all sizes, from one megawatt (MW) containerized solutions~~date, there can be no assurance that we will be able to ~~solutions for 100 MW-1,000 MW standalone plants or integrated into customers’ processes. The acquisition is expected~~continue to ~~be completed by the end of the year,~~do so. If we are unable to manage fluctuations through pricing actions, cost savings projects, and ~~is subject to customary closing conditions, including receipt of Dutch works council advice.~~sourcing decisions as well as through productivity improvements, it may adversely impact our gross margins in future periods.

~~On October 14, 2021,~~Additionally, we have observed an increasingly competitive labor market. Tight labor markets have resulted in labor inflation and longer times to fill open positions. Increased employee turnover, changes in the ~~Company~~availability of our workers, including as a result of COVID-19-related absences, and ~~its wholly-owned subsidiary Plug Power Hydrogen Holdings, Inc. entered into a definitive agreement for the acquisition~~labor shortages in our supply chain have resulted in, and could continue to result in, increased costs which could negatively affect our financial condition, results of Applied Cryo Technologies, Inc. for a purchase price of approximately $170 million, of which $40 million will be in stock and $30 million will be based on future earnouts over the next two and half years. Applied Cryo Technologies, Inc. is a leading provider of technology, equipment and services for the transportation, storage and distribution of liquified hydrogen, oxygen, argon, nitrogen and other cryogenic gases. The acquisition is expected to close during the fourth quarter of 2021 and is subject to customary closing conditions, including receipt of all approvalsoperations, or ~~the termination or expiration of all waiting periods required under applicable antitrust laws.~~

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In October 2021, the Company and SK E&S Co., Ltd., an energy company affiliated with SK Holdings Co., Ltd., formed H2A, which is a joint venture designed to accelerate the use of hydrogen as an alternative energy source in Asian markets.

~~Performance Stock Option Awards~~cash flows.

In September 2021, the Compensation Committee approved the grant of performance stock options to the Company’s Chief Executive Officer and certain other executive officers. These performance stock options are subject to both performance-based conditions tied to the achievement of stock price hurdles and time-based vesting; therefore, a Monte Carlo Simulation was utilized to determine the grant date fair value with the associated expense recognized over the requisite service period. The design of the performance options was developed with input from the Company’s independent compensation consultant. The performance stock options are strongly aligned with the Company’s culture of pay for performance and will ensure the executive team’s commitment and focus on delivering significant increases in stockholder value over the three-year performance period. Up to one-third (1/3) the performance stock options will vest and become exercisable on each of the first three anniversaries of the grant date, provided that the volume weighted average price of the Company’s common stock during any 30 consecutive trading day period in the three year performance period following the grant date of the stock options (“VWAP”) equals or exceeds certain levels. For the Company’s Chief Executive Officer, 25% of his performance stock options will be deemed to have satisfied the performance-based conditions and will be eligible to be exercised over time if the VWAP equals or exceeds $35; an additional 25% of his options will be deemed to have satisfied the performance-based condition and will be eligible to be exercised if the VWAP equals or exceeds $50; an additional 16.675% of the options will be deemed to have satisfied the performance-based condition and will be eligible to be exercised if the VWAP equals or exceeds $65; an additional 16.65% of the options will be deemed to have satisfied the performance-based condition and will be eligible to be exercised if the VWAP equals or exceeds $80; and the remaining 16.675% of the options will be deemed to have satisfied the performance-based condition and will be eligible to be exercised if the VWAP equals or exceeds $100. There will be no interpolation for the Chief Executive Officer’s performance stock option if the VWAP falls between any two stock price hurdles, unless in the event of a change in control. For executive officers other than the Chief Executive Officer, 25% of the performance stock options will be deemed to have satisfied the performance-based condition and will be eligible to be exercised if the VWAP equals $35; an additional 25% of the options will be deemed to have satisfied the performance-based condition and will be eligible to be exercised if the VWAP equals $50; and the remaining 50% of the options will be deemed to have satisfied the performance-based condition and will be eligible to be exercised if the VWAP equals or exceeds $100. If the VWAP falls between two of the stock price hurdles, an incremental number of options will become exercisable based on linear interpolation in $1 increments. Failure to achieve any of the stock price hurdles applicable to a performance stock option during the three-year performance period will result in the applicable options not becoming exercisable. The performance-based stock options have a maximum term of seven years from the grant date.

~~Explanatory Note~~

As previously disclosed in the Explanatory Note to the 2020 10-K, the Company restated its previously issued audited consolidated financial statements as of and for the years ended December 31, 2019 and 2018 and its unaudited interim condensed consolidated quarterly financial statements of and for each of the quarterly periods ended March 31, 2020, June 30, 2020 and 2019, September 30, 2020 and 2019 and December 31, 2019.

Previously filed annual reports on Form 10-K and quarterly reports on Form 10-Q for the periods affected by the restatement have not been amended. Accordingly, investors should not rely upon the Company’s previously released financial statements for these periods and any earnings releases or other communications relating to these periods, and, for these periods, investors should rely solely on the financial statements and other financial data for the relevant periods included in the 2020 10-K. Commencing with our Quarterly Report on Form 10-Q for the quarterly period ended March 31, 2021, we are including in our quarterly reports for fiscal 2021 restated results for the corresponding interim periods of fiscal 2020.

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Results of Operations

Our primary sources of revenue are from sales of fuel cell systems, ~~and~~ related infrastructure and equipment, services performed on fuel cell systems and related infrastructure, Power Purchase Agreements (PPAs), and fuel delivered to customers. Revenue from sales of fuel cell systems, ~~and~~ related infrastructure and equipment represents sales of our GenDrive units, GenSure stationary backup power units, ~~as well as~~cryogenic stationary and onroad storage, electrolyzers and hydrogen fueling infrastructure. Revenue from services performed on fuel cell systems and related infrastructure represents revenue earned on our service and maintenance contracts and sales of spare parts. Revenue from PPAs primarily represents payments received from customers who make monthly payments to access the Company’s GenKey solution. Revenue associated with fuel delivered to customers represents the sale of hydrogen to customers that has been purchased by the Company from a third party or generated on site.

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Net revenue, cost of revenue, gross profit (loss) and gross margin percentage for the three ~~and nine~~ months ended ~~September 30,~~March 31, 2022 and 2021, ~~and 2020,~~ were as follows (in thousands):

Three Months Ended

Nine Months Ended

September 30,

September 30,

Cost of

Gross

Gross

Cost of

Gross

Gross

Cost of

Gross

Gross

Net Revenue

Revenue

Profit/(Loss)

Margin

Net Revenue

Revenue

Profit/(Loss)

Margin

Net Revenue

Revenue

Profit/(Loss)

Margin

For the period ended September 30, 2021:

Sales of fuel cell systems and related infrastructure
$
115,999

$
89,235

$
26,764

23.1
%

$
262,049

$
198,122

$
63,927

24.4
%
For the period ended March 31, 2022:

Sales of fuel cell systems, related infrastructure and equipment

$
108,847

$
88,828

$
20,019

18.4
%
Services performed on fuel cell systems and related infrastructure

6,677

18,697

(12,020)

(180.0)
%

18,397

47,258

(28,861)

(156.9)
%

8,240

13,875

(5,635)

(68.4)
%
Provision for loss contracts related to service

—

7,462

(7,462)

N/A

—

15,641

(15,641)

N/A

—

2,048

(2,048)

N/A

Power Purchase Agreements

9,321

31,199

(21,878)

(234.7)
%

25,508

71,776

(46,268)

(181.4)
%
Fuel delivered to customers

11,556

27,857

(16,301)

(141.1)
%

33,804

90,331

(56,527)

(167.2)
%
Power purchase agreements

10,037

31,753

(21,716)

(216.4)
%
Fuel delivered to customers and related equipment

13,429

39,272

(25,843)

(192.5)
%
Other

369

550

(181)

(49.1)
%

679

856

(177)

(26.1)
%

251

377

(126)

(50.2)
%
Total
$
143,922

$
175,000

$
(31,078)

(21.6)
%

$
340,437

$
423,984

$
(83,547)

(24.5)
%

$
140,804

$
176,153

$
(35,349)

(25.1)
%
For the period ended September 30, 2020:

Sales of fuel cell systems and related infrastructure
$
83,662

$
69,428

$
14,234

17.0
%

$
151,876

$
117,290

$
34,586

22.8
%
For the period ended March 31, 2021:

Sales of fuel cell systems, related infrastructure and equipment

$
46,772

$
28,974

$
17,798

38.1
%
Services performed on fuel cell systems and related infrastructure

6,829

9,180

(2,351)

(34.4)
%

19,586

27,300

(7,714)

(39.4)
%

6,045

13,086

(7,041)

(116.5)
%
Provision for loss contracts related to service

—

25,147

(25,147)

N/A

—

25,948

(25,948)

N/A

—

1,485

(1,485)

N/A

Power Purchase Agreements

6,629

14,744

(8,115)

(122.4)
%

19,629

44,019

(24,390)

(124.3)
%
Fuel delivered to customers

9,831

17,002

(7,171)

(72.9)
%

24,536

39,332

(14,796)

(60.3)
%
Power purchase agreements

7,826

18,343

(10,517)

(134.4)
%
Fuel delivered to customers and related equipment

11,127

22,143

(11,016)

(99.0)
%
Other

97

131

(34)

(35.1)
%

235

275

(40)

(17.0)
%

188

98

90

47.9
%
Total
$
107,048

$
135,632

$
(28,584)

(26.7)
%

$
215,862

$
254,164

$
(38,302)

(17.7)
%

$
71,958

$
84,129

$
(12,171)

(16.9)
%

The amount of provision for common stock warrants recorded as a reduction of revenue during the three ~~and nine~~ months ended ~~September 30,~~March 31, 2022 and 2021, ~~and 2020,~~ respectively, is shown in the table below (in thousands):

Three months ended September 30,
Nine months ended September 30,

Three months ended March 31,

2021

2020

2021

2020

2022

2021

Sales of fuel cell systems and related infrastructure

$
—

$
(16,146)

$
(27)

$
(19,287)

Sales of fuel cell systems, related infrastructure and equipment

$
(17)

$
(27)

Services performed on fuel cell systems and related infrastructure

(69)

(688)

(340)

(1,412)

(150)

(140)

Power Purchase Agreements

(652)

(758)

(2,454)

(1,887)

Power purchase agreements

(974)

(900)

Fuel delivered to customers

(573)

(1,034)

(1,925)

(2,612)

(711)

(638)

Total

$
(1,294)

$
(18,626)

$
(4,746)

$
(25,198)

$
(1,852)

$
(1,705)

Net Revenue

Revenue – sales of fuel cell systems, ~~and~~ related infrastructure and equipment. Revenue from sales of fuel cell systems, ~~and~~ related infrastructure and equipment represents revenue from the sale of our fuel cells, such as GenDrive units and GenSure stationary backup power units, as well as hydrogen fueling infrastructure referred to at the site level as hydrogen ~~installations.~~installations, electrolyzers and other equipment such as cryogenic storage equipment. Revenue from sales of fuel cell systems, ~~and~~ related infrastructure and equipment for the three months ended ~~September 30, 2021~~March 31, 2022 increased ~~$32.3~~$62.1 million, or ~~38.7%~~132.7%, to ~~$116.0~~$108.9 million from ~~$83.7~~$46.8 million for the three months ended ~~September 30, 2020. Included within revenue was a provision for common stock warrants of $0 and $16.1 million for the three months ended September 30, 2021 and 2020, respectively.~~March 31, 2021. The main drivers for the increase in revenue were the ~~increase~~inclusion of revenue of acquired businesses, the mix in GenDrive units recognized as revenue

~~Table of Contents~~

and an increase in hydrogen ~~installations~~installations. The total revenue generated by Applied Cryo, Frames and ~~a decrease~~Joule was approximately $40.1 million for the three months ended March 31, 2022. There was no revenue recognized in the ~~provision for common stock warrants.~~first quarter of 2021 related to these acquisitions. There were ~~4,559~~1,229 GenDrive units recognized as revenue during the three months ended ~~September 30, 2021,~~March 31, 2022, compared to ~~3,709~~1,308 for the three months ended ~~September 30, 2020.~~March 31, 2021. Although the number of GenDrive units recognized as revenue decreased slightly, revenue increased due to the mix of sales. There was hydrogen infrastructure revenue associated with 16seven hydrogen sites during the three months ended ~~September 30, 2021,~~March 31, 2022, compared to 13six during the three months ended ~~September 30, 2020.~~

Revenue from sales of fuel cell systems and related infrastructure for the nine months ended September 30, 2021 increased $110.2 million, or 72.5%, to $262.1 million from $151.9 million for the nine months ended September 30, 2020. Included within revenue was a provision for common stock warrants of $27 thousand and $19.3 million for the nine months ended September 30, 2021 and 2020, respectively. The main drivers for the increase in revenue were the increase in GenDrive units recognized as revenue, an increase in hydrogen installations and a decrease in the provision for common stock warrants. There were 9,533 GenDrive units recognized as revenue during the nine months ended September 30, 2021, compared to 7,217 for the nine months ended September 30, 2020. There was hydrogen infrastructure revenue associated with 38 hydrogen sites during the nine months ended September 30, 2021, compared to 18 during the nine months ended September 30, 2020.March 31, 2021.

Revenue – services performed on fuel cell systems and related infrastructure. Revenue from services performed on fuel cell systems and related infrastructure represents revenue earned on our service and maintenance contracts and sales of spare parts. At ~~September 30, 2021,~~March 31, 2022, there were ~~18,685~~19,409 fuel cell units and 7884 hydrogen installations under extended maintenance contracts, an increase from ~~13,421~~14,189 fuel cell units and 5660 hydrogen installations at ~~September 30, 2020.~~March 31, 2021. Revenue from services performed on fuel cell systems and related infrastructure for the three months ended ~~September 30, 2021 decreased $0.2~~March 31, 2022 increased $2.2 million, or ~~2.2%~~36.3%, to ~~$6.7~~$8.2 million as compared to ~~$6.8~~$6.0 million for the three months ended ~~September 30, 2020. Included within revenue was provision for common stock warrants~~March 31, 2021.

Table of ~~$69 thousand and $688 thousand for the three months ended September 30, 2021 and 2020, respectively.~~ Contents

The ~~main drivers in decrease~~increase in revenue ~~was a reduction in billings for run time hours that exceeded certain levels given certain changes in the overall contract, partially offset by the decrease in the provision for common stock warrants.~~ Although the number of units and sites grew year over year, many of the units and sites deployed in the third quarter of 2021 were deployed late in the quarter and hence the full impact of associated service revenues will commence in the fourth quarter of 2021.

~~Revenue~~ from services performed on fuel cell systems and related infrastructure for the ~~nine~~three months ended ~~September 30, 2021 decreased $1.2 million, or 6.1%, to $18.4 million as~~March 31, 2022 compared to ~~$19.6 million for the nine months ended September 30, 2020. Included~~2021 was primarily related to our expanding customer base and growth within ~~revenue was provision for common stock warrants of $340 thousand and $1.4 million for the nine months ended September 30, 2021 and 2020, respectively. The main drivers~~ in decrease in revenue was a reduction in billings for run time hours that exceeded certain levels given certain changes in the overall contract, partially offset by the decrease in the provision for common stock warrants. Although the number of units and sites grew year over year, many of the units and sites deployed in the third quarter of 2021 were deployed late in the quarter and hence the full impact of associated service revenues will commence in the fourth quarter of 2021.our current customer base.

Revenue – Power Purchase Agreements. Revenue from PPAs represents payments received from customers for power generated through the provision of equipment and service. At ~~September 30, 2021,~~March 31, 2022, there were 6177 GenKey sites associated with PPAs, as compared to 3650 at ~~September 30, 2020.~~March 31, 2021. Revenue from PPAs for the three months ended ~~September 30, 2021~~March 31, 2022 increased ~~$2.7~~$2.2 million, or ~~40.6%~~28.3%, to ~~$9.3~~$10.0 million from ~~$6.6~~$7.8 million for the three months ended ~~September 30, 2020. Included within revenue was provision for common stock warrants of $652 thousand and $758 thousand for the three months ended September 30, 2021 and 2020, respectively.~~March 31, 2021. The increase in revenue from PPAs for the three months ended ~~September 30, 2021~~March 31, 2022 as compared to the three months ended ~~September 30, 2020~~March 31, 2021 was primarily attributable to the new sites for existing customers and new customers accessing the PPA ~~subscription solution, and a slight decrease~~solution. All of the new PPA sites in the ~~provision for common stock warrants.~~first quarter of 2022 were not deployed until late in the quarter; therefore, the full impact on revenue has yet to be realized.

Revenue from PPAs for the nine months ended September 30, 2021 increased $5.9 million, or 30.0%, to $25.5 million from $19.6 million for the nine months ended September 30, 2020. Included within revenue was provision for common stock warrants of $2.5 million and $1.9 million for the nine months ended September 30, 2021 and 2020, respectively. The increase in revenue from PPAs for the nine months ended September 30, 2021 as compared to the nine months ended September 30, 2020 was primarily attributable to the new sites for existing customers and new customers accessing the PPA subscription solution, offset in part by the increase in the provision for common stock warrants.

~~Table of Contents~~

Revenue – fuel delivered to customers and related equipment. Revenue associated with fuel delivered to customers and related equipment represents the sale of hydrogen to customers that has been purchased by the Company from a third party or generated on site. Revenue associated with fuel delivered to customers for the three months ended ~~September 30, 2021~~March 31, 2022 increased ~~$1.7~~$2.3 million, or ~~17.5%~~20.6%, to ~~$11.6~~$13.4 million from ~~$9.8~~$11.1 million for the three months ended ~~September 30, 2020. Included within revenue was provision for common stock warrants of $573 thousand and $1.0 million for the three months ended September 30, 2021 and 2020, respectively.~~March 31, 2021. The increase in revenue was due to an increase in the number of sites with fuel contracts from 94109 as of ~~September 30, 2020~~March 31, 2021 to ~~141~~159 as of ~~September 30, 2021, and a slight decrease in the provision for common stock warrants. A number~~March 31, 2022. All of the new fuel sites ~~had~~in the first quarter of 2022 were not ~~received fuel as of September 30, 2021, and~~deployed until late in the quarter; therefore, the ~~increase in~~full impact on revenue ~~from the third quarter of 2021 was not proportionate~~has yet to ~~the increase in new sites.~~

Revenue associated with fuel delivered to customers for the nine months ended September 30, 2021 increased $9.3 million, or 37.8%, to $33.8 million from $24.5 million for the nine months ended September 30, 2020. Included within revenue was provision for common stock warrants of $1.9 million and $2.6 million for the nine months ended September 30, 2021 and 2020, respectively. The increase in revenue was due to an increase in the number of sites with fuel contracts from 94 as of September 30, 2020 to 141 as of September 30, 2021, and a slight decrease in the provision for common stock warrants. A number of the new sites had not received fuel as of September 30, 2021, and therefore the increase in revenue from the third quarter of 2021 was not proportionate to the increase in new sites.be realized.

Cost of Revenue

Cost of revenue – sales of fuel cell systems, ~~and~~ related infrastructure and equipment. Cost of revenue from sales of fuel cell systems, ~~and~~ related infrastructure and equipment includes direct materials, labor costs, and allocated overhead costs related to the manufacture of our fuel cells such as GenDrive units and GenSure stationary backup power units, ~~and~~as well as hydrogen fueling infrastructure referred to at the site level as hydrogen ~~installations.~~installations, electrolyzers and other equipment such as cryogenic storage equipment. Cost of revenue from sales of fuel cell systems, ~~and~~ related infrastructure and equipment for the three months ended ~~September 30, 2021~~March 31, 2022 increased ~~28.5%~~206.6%, or ~~$19.8~~$59.9 million, to ~~$89.2~~$88.8 million, compared to ~~$69.4~~$29.0 million for the three months ended ~~September 30, 2020.~~March 31, 2021. This increase was driven by the ~~increase in~~ GenDrive deployment ~~volume~~mix and increase in hydrogen installations, as well as ~~certain unexpected costs, including varied COVID related issues such as~~ increased freight and material ~~costs~~cost largely due to inflationary pressures, and higher labor costs given an increasingly competitive labor market and COVID-19 related staffing and coverage issues. There were ~~4,559~~1,229 GenDrive units recognized as revenue during the three months ended ~~September 30, 2021,~~March 31, 2022, compared to ~~3,709~~1,308 for the three months ended ~~September 30, 2020. Revenue associated with 16 hydrogen installations was recognized during the three months ended September 30, 2021, compared to 13 during the three months ended September 30, 2020.~~March 31, 2021. Gross profit generated from sales of fuel cell systems and related infrastructure ~~increased~~decreased to ~~23.1%~~18.4% for the three months ended ~~September 30, 2021,~~March 31, 2022, compared to ~~17.0%~~38.1% for the three months ended ~~September 30, 2020~~March 31, 2021 primarily due to a decrease in the reduction of revenue for warrants for sales of fuel cell systems and related infrastructure of $16.1 million. For the three months ended September 30, 2021 and 2020, the reduction of revenue for warrants was $0 and $16.1 million, respectively. We expect these cost trends will continue into the end of 2021, but begin to abate once the global supply chain has normalized.

Cost of revenue from sales of fuel cell systems and related infrastructure for the nine months ended September 30, 2021 increased 68.9%, or $80.8 million, to $198.1 million, compared to $117.3 million for the nine months ended September 30, 2020. This increase was driven by the increase in GenDrive deployment volume and increase in hydrogen installations, as well as certain unexpected costs, including varied COVID related issues such as increased freight and material ~~costs~~cost largely due to inflationary pressures, and higher labor costs given an increasingly competitive labor market and COVID-19 related staffing and coverage issues. ~~There were 9,533 GenDrive units recognized as~~Additionally, the margin on the equipment revenue during the nine months ended September 30, 2021, compared to 7,217 for the nine months ended September 30, 2020. Revenue associated with 38 hydrogen installations was recognized during the nine months ended September 30, 2021, compared to 18 during the nine months ended September 30, 2020. Gross profit generated from sales of fuel cell systems and related infrastructure increased to 24.4% for the nine months ended September 30, 2021, compared to 22.8% for the nine months ended September 30, 2020 primarily due to a decrease in the reduction of revenue for warrants for sales of fuel cell systems and related infrastructure of $19.3 million. For the nine months ended September 30, 2021 and 2020, the reduction of revenue for warrants was $0 and $19.3 million, respectively. We expect these cost trends will continue into the end of 2021, but begin to abate once the global supply chain has normalized.recently acquired businesses is lower than our legacy equipment margins.

Cost of revenue – services performed on fuel cell systems and related infrastructure. Cost of revenue from services performed on fuel cell systems and related infrastructure includes the labor, material costs and allocated overhead

~~Table of Contents~~

costs incurred for our product service and hydrogen site maintenance contracts and spare parts. At ~~September 30, 2021,~~March 31, 2022, there were ~~18,685~~19,409 fuel cell units and 7884 hydrogen installations under extended maintenance contracts, an increase from ~~13,421~~14,189 fuel cell units and 5660 hydrogen installations at ~~September 30, 2020,~~March 31, 2021, respectively. Cost of revenue from services performed on fuel cell systems and related infrastructure for the three months ended ~~September 30, 2021~~March 31, 2022 increased ~~103.7%~~6.0%, or ~~$9.5~~$0.8 million to ~~$18.7~~$13.9 million, compared to ~~$9.2~~$13.1 million for the three months ended ~~September 30, 2020.~~March 31, 2021. The increase in cost of revenue was due primarily to the increase in volume and ~~certain unexpected costs, including varied COVID related issues such as~~ increased freight and material ~~costs,~~cost largely due to inflationary pressures, and higher labor costs given an increasingly competitive labor market and COVID-19 related staffing and coverage issues, and scrap charges associated with certain parts. Gross loss ~~increased~~decreased to ~~(180.0)%~~(68.4%) for the three months ended ~~September 30, 2021,~~March 31, 2022, compared to ~~(34.4)%~~(116.5%) for the three months ended ~~September 30, 2020,~~March 31, 2021, primarily due to the release of loss accrual recorded in prior periods, offset by certain unexpected costs, including varied ~~COVID~~inflation, labor market and COVID-19 related issues scrap charges associated with certain parts as well as a reduction in billings for run time hours that exceeded certain levels given certain changes in the overall contract, partially offset by a change in the release of the previously recorded loss accrual from $314 thousand during the three months ended September 30, 2020 to $2.3 million during the three months ended September 30, 2021. We expect these cost trends will continue into the end of 2021, but begin to abate once the global supply chain has normalized.

Cost of revenue from services performed on fuel cell systems and related infrastructure for the nine months ended September 30, 2021 increased 73.1%, or $20.0 million, to $47.3 million, compared to $27.3 million for the nine months ended September 30, 2020. The increase in cost of revenue was due primarily to certain unexpected costs, including varied COVID related issues such as increased freight costs, certain vendor transition and force majeure issues that impacted hydrogen infrastructure service costs, and scrap charges associated with certain parts. At September 30, 2021, there were 18,685 fuel cell units and 78 hydrogen installations under extended maintenance contracts, an increase from 13,421 fuel cell units and 56 hydrogen installations at September 30, 2020, respectively. Gross loss increased to (156.9)% for the nine months ended September 30, 2021, compared to (39.4)% for the nine months ended September 30, 2020, primarily due to certain unexpected costs including varied COVID related issues, certain vendor transition and force majeure issues that impacted hydrogen infrastructure service costs, and scrap charges associated with certain parts, as well as a reduction in billings for run time hours that exceeded certain levels given certain changes in the overall contract. This was partially offset by a release of the previously recorded loss accrual from $839 thousand during the nine months ended September 30, 2020 to $6.1 million during the nine months ended September 30, 2021. We expect these cost trends will continue into the end of 2021, but begin to abate once the global supply chain has normalized.

Table of Contents

Cost of revenue – provision for loss contracts related to service. The Company also recorded a provision for loss contracts related to service of ~~$7.5~~$2.1 million for the three months ended ~~September 30, 2021,~~March 31, 2022, compared to ~~$25.2~~$1.5 million for the three months ended ~~September 30, 2020. The decrease in~~March 31, 2021, related primarily to new service contracts entered into during the provision for loss contracts related to service was primarily a function of a higher provision in 2020, due to an increase in estimated projected cost to service fuel cell systems and related infrastructure, as the Company determined in the thirdfirst quarter of ~~2020 that certain cost down initiatives were taking longer to achieve than originally estimated. This was offset by the~~ increase in the provision as a result of more new sites under service contract during the three months ended September 30, 2021 as compared to number of sites for the three months ended September 30, 2020. In addition, ~~the Company determined during the third quarter of 2020 that the projected provision for the Amazon Warrant would be significantly higher than previously estimated.~~

The Company also recorded a provision for loss contracts related to service of $15.6 million for the nine months ended September 30, 2021, compared to $26.0 million for the nine months ended September 30, 2020. The decrease in the provision for loss contracts related to service was primarily a function of a higher provision in 2020, due to an increase in estimated projected cost to service fuel cell systems and related infrastructure, as the Company determined in the third quarter of 2020 that certain cost down initiatives were taking longer to achieve than originally estimated. This was offset by the increase in the provision as a result of more new sites under service contract during the nine months ended September 30, 2021 as compared to number of sites for the three months ended September 30, 2020. In addition, ~~the Company determined during the third quarter of 2020 that the projected provision for the Amazon Warrant would be significantly higher than previously estimated.~~2022.

Cost of revenue – Power Purchase Agreements. Cost of revenue from PPAs includes depreciation of assets utilized and service costs to fulfill PPA obligations and interest costs associated with certain financial institutions for leased equipment. At ~~September 30, 2021,~~March 31, 2022, there were 6177 GenKey sites associated with PPAs, as compared to 3650 at ~~September 30, 2020.~~March 31, 2021. Cost of revenue from PPAs for the three months ended ~~September 30, 2021~~March 31, 2022 increased ~~111.6%~~73.1%, or ~~$16.5~~$13.4 million,

~~Table of Contents~~

to ~~$31.2~~$31.8 million from ~~$14.7~~$18.3 million for the three months ended ~~September 30, 2020~~March 31, 2021 due to the increase in units and sites under PPA contract as well as certain ~~COVID~~inflation and COVID-19 related issues such as increased freight costs and scrap charges associated with certain ~~parts and an impairment charge of $1.3 million.~~parts. Gross loss increased to ~~(234.7)%~~(216.4%) for the three months ended ~~September 30, 2021,~~March 31, 2022, as compared to ~~(122.4)%~~(134.4%) for the three months ended ~~September 30, 2020~~March 31, 2021 primarily due to certain ~~COVID~~inflation and COVID-19 related issues, such as increased freight charges, and scrap charges associated with certain ~~parts, and an impairment charge of $1.3 million.~~

Cost of revenue from PPAs for the nine months ended September 30, 2021 increased 63.1%, or $27.8 million, to $71.8 million from $44.0 million for the nine months ended September 30, 2020 primarily due to the increase in units and sites under PPA contract as well as certain COVID related issues such as increased freights costs, certain force majeure issues that impacted hydrogen infrastructure service costs, scrap charges associated with certain parts and an impairment charge of $1.3 million. Gross loss increased to (181.4)% for the nine months ended September 30, 2021, as compared to (124.3)% for the nine months ended September 30, 2020 primarily due to certain COVID related issues, certain force majeure issues that impacted hydrogen infrastructure service costs, scrap charges associated with certain parts, and an impairment charge of $1.3 million.parts.

Cost of revenue – fuel delivered to customers and related equipment. Cost of revenue from fuel delivered to customers and related equipment represents the purchase of hydrogen from suppliers that ultimately is sold to customers and costs for onsite generation. Cost of revenue from fuel delivered to customers for the three months ended ~~September 30, 2021~~March 31, 2022 increased ~~63.8%~~77.4%, or ~~$10.9~~$17.1 million, to ~~$27.9~~$39.3 million from ~~$17.0~~$22.1 million for the three months ended ~~September 30, 2020.~~March 31, 2021. The increase was primarily due to higher volume of hydrogen delivered to customer sites as a result of an increase in the number of hydrogen installations completed under GenKey agreements, ~~costs associated with managing availability of molecule~~inefficiencies in ~~the supply chain as well as a shortage of delivery capability (both drivers and delivery assets),~~fueling systems and higher fuel costs. As a result of these inefficiencies and higher costs, gross loss increased to ~~(141.1)%~~(192.5%) during the three months ended ~~September 30, 2021,~~March 31, 2022, compared to ~~(72.9)%~~(99.0%) during the three months ended ~~September 30, 2020. We expect higher hydrogen molecule costs to continue at least through 2021.~~

Cost of revenue from fuel delivered to customers for the nine months ended September 30, 2021 increased 129.7%, or $51.0 million, to $90.3 million from $39.3 million for the nine months ended September 30, 2020. The increase was primarily due to higher volume of hydrogen delivered to customer sites as a result of an increase in the number of hydrogen installations completed under GenKey agreements, and higher fuel costs. Also significantly impacting the cost of fuel for the nine months ended September 30, 2021 was a vendor transition and force majeure events primarily related to hydrogen plant shutdowns. Gross loss increased to (167.2)% during the nine months ended September 30, 2021, compared to (60.3)% during the nine months ended September 30, 2020. The increased gross loss is primarily due to the vendor transition and force majeure issues mentioned above. The cost associated with the vendor transition amounted to approximately $16.3 million for the nine months ended September 30, 2021, which were recorded in the Company’s unaudited interim condensed consolidated statement of operations as cost of revenue – fuel delivered to customers. The Company also purchased certain fuel tanks from the fuel provider during the nine months ended September 30,March 31, 2021. We expect higher hydrogen molecule costs to continue at least through ~~2021.~~2022.

Expenses

Research and development expense. Research and development (“R&D”) expense includes: materials to build development and prototype units, cash and non-cash stock-based compensation and benefits for the engineering and related staff, expenses for contract engineers, fees paid to consultants for services provided, materials and supplies consumed, facility related costs such as computer and network services, and other general overhead costs associated with our research and development activities.

Research and development expense for the three months ended ~~September 30, 2021~~March 31, 2022 increased ~~$9.2~~$10.7 million, or ~~125.2%~~110.0%, to ~~$16.6~~$20.5 million, from ~~$7.4~~$9.7 million for the three months ended ~~September 30, 2020.~~March 31, 2021. The overall growth in R&D investment is commensurate with the Company’s future expansion into new markets, new product lines, acquisitions and varied vertical integrations. ~~The average number of R&D employees was 139 at September 30, 2020 compared to 264 at September 30, 2021.~~

Research and development expense for the nine months ended September 30, 2021 increased $20.6 million, or 120.9%, to $37.6 million, from $17.0 million for the nine months ended September 30, 2020. The overall growth in R&D

~~Table of Contents~~

investment is commensurate with the Company’s future expansion into new markets, new product lines, and varied vertical integrations. The average number of R&D employees was 132 at September 30, 2020 compared to 227 at September 30, 2021.

Selling, general and administrative expenses. Selling, general and administrative expenses includes cash and non-cash stock-based compensation, benefits, amortization of intangible assets and related costs in support of our general corporate functions, including general management, finance and accounting, human resources, selling and marketing, information technology and legal services.

Selling, general and administrative expenses for the three months ended ~~September 30, 2021,~~March 31, 2022, increased ~~$25.2~~$55.3 million, or ~~146.5%~~216.2%, to ~~$42.4~~$80.9 million from ~~$17.2~~$25.6 million for the three months ended ~~September 30, 2020.~~March 31, 2021. This increase was primarily related to ~~increases~~increased headcount, which resulted in increased salaries and stock-based compensation, ~~due to increased headcount and~~as well as branding expenses.

Selling, general and administrative expenses for the nine months ended September 30, 2021, increased $56.7 million, or 113.5%, to $106.7 million from $50.0 million for the nine months ended September 30, 2020. This increase was primarily related to increases in salaries and stock-based compensation due to increased headcount and branding expenses, in addition to costs associated with the restatement of our previous years’ financial statements.

Contingent ~~Consideration.~~consideration. The fair value of the contingent consideration related to the Giner ELX, Inc. ~~and~~, United Hydrogen Group ~~Inc.~~Inc, Frames, Applied Cryo and Joule acquisitions was remeasured as of ~~September 30, 2021,~~March 31, 2022, which resulted in a ~~$8.5~~$2.5 million and $0.8 million charge for the three months ended ~~September 30,~~March 31, 2022 and 2021, and a $8.8 million charge for the nine months ended September 30, 2021, both of which are reflected in the unaudited interim condensed consolidated statement of operations for the three and nine months ended September 30, 2021, respectively, primarily due to an increase in projected revenues associated with electrolyzers.respectively.

Interest ~~net~~income. Interest ~~net~~income primarily consists of income generated by our investment holdings, restricted cash escrow accounts, and money market accounts. Interest income for the three months ended March 31, 2022 increased

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$2.0 million as compared to the three months ended March 31, 2021. The increase is primarily related to the increase in the investment portfolio during 2021.

Interest expense. Interest expense consists of interest expense related to our long-term debt, convertible senior notes, obligations under finance leases and our finance ~~obligations, as well as interest income.~~obligations. Interest ~~decreased $11.9 million, or (68.9)%, from $17.2 million~~expense for the three months ended ~~September 30, 2020 to $5.4~~March 31, 2022 decreased $3.7 million for the three months ended September 30, 2021. Interest decreased $14.5 million, or (34.2)%, from $42.4 million for the nine months ended September 30, 2020 to $27.9 million for the nine months ended September 30, 2021. This decrease was primarily driven by the exchange and conversion during both 2020 and 2021 of the 7.5% Convertible Senior Note and 5.5% Convertible Senior Notes, and the adoption of ASU 2020-06 which reduced the noncash interest expense on convertible notes.

~~Other expense, net~~. Other expense, net consists of other expenses related to our foreign currency exchange losses, offset by interest and other income consisting primarily of interest earned on our cash and cash equivalents, restricted cash and available-for-sale securities. Other expense, net decreased $253 thousand for the three months ended September 30, 2021 in comparisoncompared to the three months ended ~~September 30, 2020~~March 31, 2021, primarily related to a decrease in long-term debt and ~~decreased $134 thousand for the nine months ended September 30, 2021~~an increase in ~~comparison to the nine months ended September 30, 2020.~~capitalized interest, offset by an increase in finance obligations.

Realized loss on investments, net. Realized loss on investments, net consists of the sales ~~and maturities~~ related to available-for-sale debt securities. For the three months ~~and nine months~~ ended ~~September 30,~~March 31, 2022 and 2021, the Company had ~~$254~~a loss of $847 thousand and ~~$236 thousand,~~$0, respectively, of net realized loss on investments. ~~The Company did not have an investment portfolio in 2020, and as such there were no realized gains or losses.~~

Change in fair value of equity securities. Change in fair value of equity securities consists of the changes in fair value for equity securities from the purchase date to the end of the period. For the three months ~~and nine months~~ ended ~~September 30, 2021,~~March 31, 2022, the Company had ~~$607 thousand and $284 thousand, respectively, of~~a $5.2 million change in the fair value of equity securities. The Company did not have ~~an investment portfolio in 2020, and as such there were no realized gains or losses.~~any equity securities for the three months ended March 31, 2021.

Loss on equity method investments. Loss on equity method investments consists of our interest in ~~Hyvia,~~HyVia, which is our 50/50 joint venture with ~~Renault.~~Renault, AccionaPlug S.L., which is our 50/50 joint venture with Acciona, and HALO Hydrogen Co, Ltd., which is our 49/51 joint venture with SK E&S. For ~~both~~ the three ~~and nine~~ months ended ~~September 30, 2021,~~March 31, 2022, the Company recorded a loss of ~~$1.7~~$3.8 million on equity method ~~investments as HyVia had not yet started commercial operations.~~investments. The Company did not have any equity method investments ~~in 2020, and as such there were no realized gains or losses.~~for the three months ended March 31, 2021.

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Income Tax

The Company did not record any income tax expense or benefit for the three or nine months ended September 30, 2021. The Company recognized an income tax benefit for the three and nine months ended September 30, 2020 of $6.6recorded $0.4 million and $24.0 million, respectively. Income tax benefit for the three and nine months ended September 30, 2020 included $6.6 million and $19.0, million, respectively, resulting from the intraperiod tax allocation rules under ASC Topic 740-20, ~~Intraperiod Tax Allocation~~, under which the Company recognized an income tax benefit resulting from a source of future taxable income attributable to the net credit to additional paid-in capital related to the issuance of the 3.75% Convertible Senior Notes, offset by the partial extinguishment of the 5.5% Convertible Senior Notes. In addition, the Company recorded $5.0 million$0 of income tax benefit for the three ~~and nine~~ months ended September 30, 2020 related to the recognition of net deferred tax liabilities in connection with the Giner ELX, Inc. acquisition, which resulted in a corresponding reduction in our deferred tax asset valuation allowance.March 31, 2022 and 2021, respectively. The Company has not changed its overall conclusion with respect to the need for a valuation allowance against its domestic net deferred tax assets, which remain fully reserved.
The domestic net deferred tax asset generated from the Company’s net operating loss has been offset by a full valuation allowance because it is more likely than not that the tax benefits of the net operating loss carry forward will not be realized. The Company recognizes accrued interest and penalties related to unrecognized tax benefits, if any, as a component of income tax expense.

Liquidity and Capital Resources

Liquidity

As of ~~September 30, 2021~~both March 31, 2022 and December 31, ~~2020,~~2021, the Company had ~~$3.4 billion and $1.3~~$2.5 billion of cash and cash equivalents and ~~$481.2~~$683.0 million and ~~$321.9~~$650.9 million of restricted cash, respectively. In January and February 2021, the Company issued and sold in a registered equity offering an aggregate of 32.2 million shares of its common stock at a purchase price of $65.00 per share for net proceeds of approximately $2.0 billion. ~~Furthermore, in~~In February 2021, the Company completed the previously announced sale of its common stock in connection with a strategic partnership with SK Holdings to accelerate the use of hydrogen as an alternative energy source in Asian markets. The Company sold 54,996,188 shares of its common stock to a subsidiary of SK Holdings at a purchase price of $29.2893 per share, or an aggregate purchase price of approximately $1.6 billion.

The Company has continued to experience negative cash flows from operations and net losses. The Company incurred net losses attributable to common stockholders of ~~$267.1~~$156.5 million and ~~$112.1~~$60.7 million for the ~~nine~~three months ended ~~September 30,~~March 31, 2022 and 2021, ~~and 2020,~~ respectively, and had an accumulated deficit of ~~$2.2~~$2.6 billion at ~~September 30, 2021.~~March 31, 2022. The net cash used in operating activities for the three months ended March 31, 2022 and 2021 was $209.9 million and $117.1 million, respectively. The net cash provided by (used in) investing activities for the three months ended March 31, 2022 and 2021 was $273.9 million and ($418.4) million, respectively. The net cash (used in) provided by financing activities for the three months ended March 31, 2022 and 2021 was ($18.2) million and $3,594.4 million, respectively.

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The Company’s significant obligations consisted of the following as of ~~September 30, 2021:~~March 31, 2022:

(i)

Operating and finance leases totaling ~~$162.7~~$219.7 million and ~~$19.8~~$36.2 million, respectively, of which ~~$23.3~~$33.5 million and ~~$2.8~~$5.7 million, respectively, are due within the next 12 months. These leases are primarily related to sale/leaseback agreements entered into with various financial institutions to facilitate the Company’s commercial transactions with key customers.

(ii)

Finance obligations totaling ~~$207.8~~$260.2 million, of which approximately ~~$35.6~~$44.3 million is due within the next 12 months. Finance obligations consist primarily of debt associated with the sale of future revenues and failed sale/leaseback transactions.

(iii)

Long-term debt, primarily related to the Company’s Loan Agreement with Generate Capital totaling ~~$147.3~~$109.1 million, of which ~~$23.5~~$4.2 million is classified as short term on our consolidated balance sheets. ~~See Note 9, “Long-Term Debt”, for more details.~~

(iv)

Convertible senior notes totaling ~~$192.3~~$192.9 million at ~~September 30, 2021. See Note 10, “Convertible Senior Notes” for more details.~~March 31, 2022.

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The Company’s working capital was ~~$4.5~~$3.7 billion at ~~September 30, 2021,~~March 31, 2022, which included unrestricted cash and cash equivalents of ~~$3.4~~$2.5 billion. The Company plans to invest a portion of its available cash to expand its current production and manufacturing capacity and to fund strategic acquisitions and partnerships and capital projects. ~~In the fourth quarter of 2021, the Company expects to invest approximately~~ €~~5 million, of which~~ €~~2.5 million will be in the form of a shareholder loan.~~ Future use of the Company’s funds is discretionary and the Company believes that its working capital and cash position will be sufficient to fund its operations for at least one year after the date the financial statements are issued.

Public and Private Offerings of Equity and Debt

Common Stock Issuances

In February 2021, the Company completed the previously announced sale of its common stock in connection with a strategic partnership with SK Holdings to accelerate the use of hydrogen as an alternative energy source in Asian markets. The Company sold 54,966,188 shares of its common stock to a subsidiary of SK Holdings at a purchase price of $29.2893 per share, or an aggregate purchase price of approximately $1.6 billion.

In November 2020, the Company issued and sold in a registered ~~equity~~direct offering an aggregate of 43,700,000 shares of its common stock at a purchase price of $22.25 per share for net proceeds of approximately $927.3 million.

In August 2020, the Company issued and sold in a registered ~~equity~~direct offering an aggregate of 35,276,250 shares of its common stock at a purchase price of $10.25 per share for net proceeds of approximately $344.4 million.

~~On April 13, 2020,~~In December 2019, the Company ~~entered into the At Market Issuance Sales Agreement with B. Riley Financial (“B. Riley”), as sales agent, pursuant to which~~issued and sold in a registered public offering an aggregate of 46 million shares of its common stock at a purchase price of $2.75 per share for net proceeds of approximately $120.4 million.

In March 2019, the Company ~~may offer~~issued and ~~sell, from time to time through B. Riley,~~sold in a registered direct offering an aggregate of 10 million shares of ~~Company~~its common stock ~~having an aggregate offering~~at a purchase price of up$2.35 per share. The net proceeds to ~~$75.0 million. As of the date of this filing,~~ the Company ~~has not issued any shares of common stock pursuant to the At Market Issuance Sales Agreement.~~were approximately $23.5 million.

Convertible Senior Notes

In May 2020, the Company issued $212.5 million in aggregate principal amount of 3.75% Convertible Senior Notes. The total net proceeds from this offering, after deducting costs of the issuance, were $205.1 million. The Company used $90.2 million of the net proceeds from the offering of the 3.75% Convertible Senior Notes to repurchase $66.3 million of the $100 million in aggregate principal amount of the 5.5% Convertible Senior Notes. In addition, the Company used approximately $16.3 million of the net proceeds from the offering of the 3.75% Convertible Senior Notes to enter into privately negotiated capped called transactions. In the fourth quarter of 2020, $33.5 million of the remaining 5.5% Convertible Senior Notes were converted into 14.6 million shares of common stock, resulting in a gain of approximately ~~$4.5~~

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$4.5 million which was recorded on the consolidated statement of operations on the gain (loss) on extinguishment of debt line. As of December 31, 2020, approximately $160 thousand aggregate principal amount of the 5.5% Convertible Senior Notes remained outstanding, all of which were converted to common stock in January 2021.

In September 2019, the Company issued $40.0 million in aggregate principal amount of 7.5% Convertible Senior Note. The Company’s total obligation, net of interest accretion, due to the holder was $48.0 million. The total net proceeds from this offering, after deducting costs of the issuance, were $39.1 million. On July 1, 2020, the note automatically converted fully into 16.0 million shares of common stock.

Secured Debt

In March 2019, the Company entered into a loan and security agreement, as amended (the “Loan Agreement”), with Generate Lending, LLC (“Generate Capital”), providing for a secured term loan facility in the amount of $100 million (the “Term Loan Facility”).

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~~During the year ended December~~ On March 31, 2020, the Company, under another series of amendments to the Loan Agreement, borrowed an incremental $100.0 million. As part of the amendment to the Loan Agreement, the Company’s interest rate on the secured term loan facility was reduced to 9.50% from 12.00% per annum, and the maturity date was extended to October 31, 2025 from October 6, 2022. On September 30, 2021,2022, the outstanding balance under the Term Loan Facility was ~~$137.7~~$99.8 million. ~~In addition to~~The carrying value of the Term Loan Facility ~~on September 30, 2021 there was approximately $9.5 million of debt outstanding related to the United Hydrogen Group, Inc. acquisition.~~approximates fair value.

The Loan Agreement provides that if there is an event of default due to the Company’s insolvency or if the Company fails to perform in any material respect the servicing requirements for fuel cell systemscovenants under certain customer agreements, which failure would entitle the customer to terminate such customer agreement, replace the Company or withhold the payment of any material amount to the Company under such customer agreement, then Generate Capital has the right to cause Proton Services Inc., a wholly owned subsidiary of the Company, to replace the Company in performing the maintenance services under such customer agreement.

~~As of September 30, 2021,~~ the Term Loan ~~Facility requires the principal balance as of each of the following dates not to exceed the following (in thousands):~~Facility.

December 31, 2021
$
127,317
December 31, 2022

93,321
December 31, 2023

62,920
December 31, 2024

33,692
December 31, 2025

—

~~Several key indicators of liquidity are summarized in the following table (in thousands):~~

Nine months

Year

ended or at

ended or at

September 30, 2021

December 31, 2020
Cash and cash equivalents at end of period

$
3,371,962

$
1,312,404
Restricted cash at end of period

481,230

321,880
Working capital at end of period

4,518,052

1,380,830
Net loss attributable to common stockholders

(267,051)

(596,181)
Net cash used in operating activities

(348,501)

(155,476)
Net cash used in investing activities

(1,014,294)

(95,334)
Net cash provided by financing activities

3,581,762

1,515,529

3.75% Convertible Senior Notes

On May 18, 2020, the Company issued $200.0 million in aggregate principal amount of 3.75% Convertible Senior Notes due June 1, 2025, in a private placement to qualified institutional buyers pursuant to Rule 144A under the Securities Act. On May 29, 2020, the Company issued an additional $12.5 million in aggregate principal amount of 3.75% Convertible Senior Notes.

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~~At issuance in May 2020,~~ During the ~~total net proceeds from the 3.75% Convertible Senior Notes~~three months ended March 31, 2022, there were ~~as follows:~~

Amount

(in thousands)
Principal amount
$
212,463
Less initial purchasers' discount

(6,374)
Less cost of related capped calls

(16,253)
Less other issuance costs

(617)
Net proceeds
$
189,219

The 3.75% Convertible Senior Notes bear interest at a rate of 3.75% per year, payable semi-annually in arrears on June 1 and December 1 of each year, beginning on December 1, 2020. The notes will mature on June 1, 2025, unless earlier converted, redeemed or repurchased in accordance with their terms.

The 3.75% Convertible Senior Notes are senior, unsecured obligations of the Company and rank senior in right of payment to any of the Company’s indebtedness that is expressly subordinated in right of payment to the notes, equal in right of payment to any of the Company’s existing and future liabilities that are not so subordinated, including the Company’s $100 million in aggregate principal amount of the 5.5% Convertible Senior Notes, effectively junior in right of payment to any of the Company’s secured indebtedness to the extent of the value of the collateral securing such indebtedness, and structurally subordinated to all indebtedness and other liabilities, including trade payables, of its current or future subsidiaries.

~~Holders~~no conversions of the 3.75% Convertible Senior ~~Notes may convert their notes at their option at any time prior to the close of the business day immediately preceding December 1, 2024 in the following circumstances:~~

1) during any calendar quarter commencing after March 31, 2021 if the last reported sale price of the Company’s common stock exceeds 130% of the conversion price for each of 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;

2) during the five business days after any five consecutive trading day period (such five consecutive trading day period, the measurement period) in which the trading price per $1,000 principal amount of the 3.75% Convertible Senior 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;

3) if the Company calls any or all of the 3.75% Convertible Senior Notes for redemption, any such notes that have been called for redemption may be converted at any time prior to the close of business on the second scheduled trading day immediately preceding the redemption date; or

4) ~~upon the occurrence of specified corporate events, as described in the indenture governing the 3.75% Convertible Senior Notes.~~

On or after December 1, 2024, the holders of the 3.75% Convertible Senior Notes may convert all or any portion of their notes at any time prior to the close of business on the second scheduled trading day immediately preceding the maturity date regardless of the foregoing conditions.

The initial conversion rate for the 3.75% Convertible Senior Notes is 198.6196 shares of the Company’s common stock per $1,000 principal amount of notes, which is equivalent to an initial conversion price of approximately $5.03 per share of the Company’s common stock, subject to adjustment upon the occurrence of specified events. Upon conversion, the Company will pay or deliver, as applicable, cash, shares of the Company’s common stock or a combination of cash and shares of the Company’s common stock, at the Company’s election. During the three months ended September 30,

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2021, certain conditions allowing holders of the 3.75% Convertible Senior Notes to convert were met. The 3.75% Convertible Senior Notes are therefore convertible during the calendar quarter ending September 30, 2021 at the conversion rate discussed above. During the nine months ended September 30, 2021, $15.2 million of the 3.75% Convertible Senior Notes were converted and the Company issued approximately 3.0 million shares of common stock in conjunction with these conversions.

~~The 3.75% Convertible Senior Notes will be redeemable, in whole or in part, at the Company’s option at any time, and from time to time, on or after June 5, 2023 and before the 41~~^st scheduled trading day immediately before the maturity date, at a cash redemption price equal to 100% of the principal amount of the notes to be redeemed, plus accrued and unpaid interest, if any, but only if the last reported sale price per share of the Company’s common stock exceeds 130% of the conversion price then in effect for at least 20 trading days (whether or not consecutive), including at least one of the three trading days immediately preceding the date the Company sends the related redemption notice, during any 30 consecutive trading day period ending on, and including, the trading day immediately preceding the date on which the Company sends such redemption notice.

The 3.75% Convertible Senior Notes consisted of the following (in thousands):

September 30,

2021
Principal amounts:

Principal
$
197,278
Unamortized debt issuance costs (1)

(4,958)
Net carrying amount
$
192,320

March 31,

2022
Principal amounts:

Principal
$
197,278
Unamortized debt issuance costs (1)

(4,329)
Net carrying amount
$
192,949
1) Included in the unaudited interim condensed consolidated balance sheets within the 3.75% Convertible Senior Notes, net and amortized over the remaining life of the notes using the effective interest rate method.

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The following table summarizes the total interest expense, the amortization of debt issuance costs and the effective interest rate related to the 3.75% Convertible Senior Notes (in thousands, except for effective interest rate):

September 30,

2021
Interest expense
$
1,849
Amortization of debt issuance costs

306
Total

2,155

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~~Effective interest rate~~		~~4.50%~~

March 31,

March 31,

2022

2021

Interest expense

$
1,849

$
1,897

Amortization of debt issuance costs

316

1,258

Total

2,165

3,155

Effective interest rate

4.5%

4.5%

Based on the closing price of the Company’s common stock of ~~$25.54~~$28.61 on ~~September 30, 2021,~~March 31, 2022, the if-converted value of the notes was greater than the principal amount. The estimated fair value of the note at ~~September 30, 2021~~March 31, 2022 was approximately ~~$1.0~~$1.1 billion. The fair value estimation was primarily based on an active stock exchange trade on ~~September~~March 30, ~~2021~~2022 of the 3.75% Convertible Senior Notes. ~~See Note 15, “Fair Value Measurements,” for a description of the fair value hierarchy.~~

Capped Call

In conjunction with the pricing of the 3.75% Convertible Senior Notes, the Company entered into privately negotiated capped call transactions (the “3.75% Notes Capped Call”) with certain counterparties at a price of $16.2 million. The 3.75% Notes Capped Call covers, subject to anti-dilution adjustments, the aggregate number of shares of the Company’s common stock that underlie the initial 3.75% Convertible Senior Notes and is generally expected to reduce potential dilution to the Company’s common stock upon any conversion of the 3.75% Convertible Senior Notes and/or offset any cash payments the Company is required to make in excess of the principal amount of the converted notes, as the case may be, with such reduction and/or offset subject to a cap based on the cap price. The cap price of the 3.75% Notes Capped Call is initially $6.7560 per share, which represents a premium of approximately 60%over the last then-reported sale price of the Company’s common stock of $4.11 per share on the date of the transaction and is subject to certain adjustments under the terms of the 3.75% Notes Capped Call. The 3.75% Notes Capped Call becomes exercisable if the conversion option is exercised.
The net cost incurred in connection with the 3.75% Notes Capped Call were recorded as a reduction to additional paid-in capital in the unaudited interim condensed consolidated balance sheets.
~~5.5% Convertible Senior~~
The book value of the 3.75% Notes Capped Call is not remeasured.

Common Stock Forward

In March 2018, the Company issued $100.0 million in aggregate principal amount of the 5.5% Convertible Senior Notes due on March 15, 2023, in a private placement to qualified institutional buyers pursuant to Rule 144A under the Securities ~~Act.~~

In May 2020, the Company used a portion of the net proceeds from the issuance of the 3.75% Convertible Senior Notes to finance the cash portion of the partial repurchase of the 5.5% Convertible Senior Notes,Act, which consisted of a repurchase of approximately $66.3 million in aggregate principal amount of the 5.5% Convertible Senior Notes in privately-negotiated transactions for aggregate consideration of $128.9 million, consisting of approximately $90.2 million in cash and approximately 9.4 million shares of the Company’s common stock. The partial repurchase of the 5.5% Convertible Senior Notes resulted in a $13.2 million gain on early debt extinguishment. In the fourth quarter of 2020, $33.5 million of the remaining 5.5% Convertible Senior Notes werehave been fully converted into 14.6 million shares of common stock which resulted in a gain of approximately $4.5 million which was recorded on the consolidated statement of operations on the gain (loss) on extinguishment of debt line.

~~On January 7, 2021, the remaining aggregate principal of $160 thousand aggregate principal amount of the 5.5% Convertible Senior Notes were converted into 69,808~~ shares of common stock. ~~Interest expense and amortization for the period were immaterial.~~

~~Capped Call~~

In conjunction with the pricing of the 5.5% Convertible Senior Notes, the Company entered into privately negotiated capped call transactions (the “5.5% Notes Capped Call”) with certain counterparties at a price of $16.0 million to reduce the potential dilution to the Company’s common stock upon any conversion of the 5.5% Convertible Senior Notes and/or offset any cash payments the Company is required to make in excess of the principal amount of the converted 5.5% Convertible Senior Notes, as the case may be. The net cost incurred in connection with the 5.5% Notes Capped Call has been recorded as a reduction to additional paid-in capital in the unaudited interim condensed consolidated balance sheets.

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~~Common Stock Forward~~

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The book value of the ~~5.5% Notes Capped Call and~~ Common Stock Forward ~~are~~is not remeasured.

There were no shares of common stock settled in connection with the Common Stock Forward during the three months ended March 31, 2022. During the ~~fourth quarter of 2020,~~three months ended March 31, 2021, the Common Stock Forward was partially settled and ~~as a result, the Company received 4.4~~5.9 million shares ~~of its common stock. During the three 0 shares~~ were ~~settled and received by the Company. During the nine months ended September 30, 2021, 8.1 million shares were settled and~~ received by the Company.

Amazon Transaction Agreement

On April 4, 2017, the Company and Amazon entered into athe Amazon Transaction Agreement, ~~(the “Amazon Transaction Agreement”),~~ pursuant to which the Company agreed to issue to Amazon.com NV Investment Holdings LLC, a wholly owned subsidiary of Amazon, ~~a warrant (the “Amazon Warrant”)~~the Amazon Warrant to acquire up to 55,286,696 shares of the Company’s common stock, ~~(the “Amazon Warrant Shares”),~~ subject to certain vesting events described below. The Company and Amazon entered into the Amazon Transaction Agreement in connection with existing commercial agreements between the Company and Amazon with respect to the deployment of the Company’s GenKey fuel cell technology at Amazon distribution centers. The existing commercial agreements contemplate, but do not guarantee, future purchase orders for the Company’s fuel cell technology. The vesting of the Amazon Warrant Shares was conditioned upon payments made by Amazon or its affiliates (directly or indirectly through third parties) pursuant to the existing commercial agreements.

~~Provision for the second and third tranches of Amazon Warrant Shares is recorded as a reduction of revenue because they represent consideration payable to a customer.~~

The fair value of the second tranche of Amazon Warrant Shares was measured at January 1, 2019, upon adoption of ASU 2019-08. The second tranche of 29,098,260 Amazon Warrant Shares vested in four equal installments, as Amazon or its affiliates, directly or indirectly through third parties, made an aggregate of $50.0 million in payments for goods and services to the Company, up to payments totaling $200.0 million in the aggregate. The last installment of the second tranche vested on November 2, 2020. Revenue reductions of $9.0 million, $4.1 million and $9.8 million associated with

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~~the second tranche of Amazon Warrant Shares were recorded in 2020, 2019 and 2018, respectively, under the terms of the original Amazon Warrant.~~

Under the terms of the original Amazon Warrant, the third tranche of 20,368,784 Amazon Warrant Shares vests in eight equal installments, as Amazon or its affiliates, directly or indirectly through third parties, made an aggregate of $50.0 million in payments for goods and services to the Company, up to payments totaling $400.0 million in the aggregate. The measurement date for the third tranche of Amazon Warrant Shares was November 2, 2020, when their exercise price was determined, as discussed further below. The fair value of the third tranche of Amazon Warrant Shares was determined to be $10.57 each. During 2020, revenue reductions of $24.1 million associated with the third tranche Amazon Warrant Shares were recorded under the terms of the original Amazon Warrant, prior to the December 31, ~~2020 waiver described below.~~

The $399.7 million reduction to revenue was recognized during the year ended December 31, 2020 because the Company concluded such amount was not recoverable from the margins expected from future purchases by Amazon under the Amazon Warrant, and no exclusivity or other rights were conferred to the Company in connection with the December 31, 2020 waiver. Additionally, for the year ended December 31, 2020, the Company recorded a reduction to the provision for warrants of $12.8 million in connection with the release of the service loss accrual. 2021.

The exercise price for the first and second tranches of Amazon Warrant Shares was $1.1893 per share. The exercise price of the third tranche of Amazon Warrant Shares was $13.81 per share, which was determined pursuant to the terms of the Amazon Warrant as an amount equal to ninety percent (90%) of the 30-day volume weighted average share price of the Company’s common stock as of November 2, 2020, the final vesting date of the second tranche of Amazon Warrant Shares. The Amazon Warrant is exercisable through April 4, 2027. The Amazon Warrant provides for net share settlement that, if elected by the holder, will reduce the number of shares issued upon exercise to reflect net settlement of the exercise price. The Amazon Warrant provides for certain adjustments that may be made to the exercise price and the number of shares of common stock issuable upon exercise due to customary anti-dilution provisions based on future events. The Amazon Warrant is classified as an equity instrument.Walmart Transaction Agreement

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~~The Company used the following assumptions for its Amazon Warrant:~~

December 31, 2020

November 2, 2020
Risk-free interest rate

0.58%

0.58%
Volatility

75.00%

75.00%
Expected average term

6.26

6.42
Exercise price

$13.81

$13.81
Stock price

$33.91

$15.47

~~Walmart Transaction Agreement~~

On July 20, 2017, the Company and Walmart entered into athe Walmart Transaction Agreement, ~~(the “Walmart Transaction Agreement”),~~ pursuant to which the Company agreed to issue to Walmart ~~a warrant (the “Walmart Warrant”)~~the Walmart Warrant to acquire up to 55,286,696 shares of the Company’s common stock, subject to certain vesting ~~events (the “Walmart Warrant Shares”).~~events. The Company and Walmart entered into the Walmart Transaction Agreement in connection with existing commercial agreements between the Company and Walmart with respect to the deployment of the Company’s GenKey fuel cell technology across various Walmart distribution centers. The existing commercial agreements contemplate, but do not guarantee, future purchase orders for the Company’s fuel cell technology. The vesting of the warrant shares conditioned upon payments made by Walmart or its affiliates (directly or indirectly through third parties) pursuant to transactions entered into after January 1, 2017 under existing commercial agreements.

The ~~majority~~warrant had been exercised with respect to 13,094,217 shares of the Walmart Warrant Shares will vest based on Walmart’s payment of up to $600.0 million to the Company in connection with Walmart’s purchase of goods and services from the Company. The first tranche of 5,819,652 Walmart Warrant Shares vested upon the execution of the Walmart Warrant and was fully exercised as of December 31, 2020. Accordingly, $10.9 million, the fair value of the first tranche of Walmart Warrant Shares, was recorded as a provision for common stock warrants and presented as a reduction to revenue on the consolidated statements of operations during 2017. All future provision for common stock warrants is measured based on their grant-date fair value and recorded as a charge against revenue. The second tranche of 29,098,260 Walmart Warrant Shares vests in four installments of 7,274,565 Walmart Warrant Shares each time Walmart or its affiliates, directly or indirectly through third parties, make an aggregate of $50.0 million in payments for goods and services to the Company, up to payments totaling $200.0 million in the aggregate. The exercise price for the first and second tranches of Walmart Warrant Shares is $2.1231 per share. After Walmart has made payments to the Company totaling $200.0 million, the third tranche of 20,368,784 Walmart Warrant Shares will vest in eight installments of 2,546,098 Walmart Warrant Shares each time Walmart or its affiliates, directly or indirectly through third parties, make an aggregate of $50.0 million in payments for goods and services to the Company, up to payments totaling $400.0 million in the aggregate. The exercise price of the third tranche of Walmart Warrant Shares will be an amount per share equal to ninety percent (90%) of the 30-day volume weighted average share price of theCompany’s common stock as of the final vesting date of the second tranche of Walmart Warrant Shares, provided that, with limited exceptions, the exercise price for the third tranche will be no lower than $1.1893. The Walmart Warrant is exercisable through July 20, 2027.

The Walmart Warrant provides for net share settlement that, if elected by the holder, will reduce the number of shares issued upon exercise to reflect net settlement of the exercise price. The Walmart Warrant provides for certain adjustments that may be made to the exercise priceboth March 31, 2022 and ~~the number of shares of common stock issuable upon exercise due to customary anti-dilution provisions based on future events. The Walmart Warrant is classified as an equity instrument.~~December 31, 2021.

At ~~both September 30,~~March 31, 2022 and 2021, respectively, 20,368,782 and ~~December 31, 2020,~~ 13,094,217 of the Walmart Warrant Shares had vested. The total amount of provision for common stock warrants recorded as a reduction of revenue for the Walmart Warrant during the three months ended ~~September 30,~~March 31, 2022 and 2021 ~~and 2020~~ was ~~$1.2~~$1.7 million and $1.3 million, respectively. The amount of provision for common stock warrants recorded as a reduction of revenue for the Walmart Warrant during the nine months ended September 30, 2021 and 2020 was $4.4 million and $3.2$1.6 million, respectively. During the three months ended March

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31, 2022 and 2021, respectively, the Walmart Warrant ~~had been~~was exercised with respect to 0 and 7,274,565 shares of common stock. ~~There were no exercises during the second or third quarter of 2021.~~

Operating and Finance Lease Liabilities

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Leases contain termination clauses with associated penalties, the amount of which cause the likelihood of cancellation to be remote. At the end of the lease term, the leased assets may be returned to the lessor by the Company, the Company may negotiate with the lessor to purchase the assets at fair market value, or the Company may negotiate with the lessor to renew the lease at market rental rates. No residual value guarantees are contained in the leases. No financial covenants are contained within the lease; however, ~~there are~~the lease contains customary operational covenants such as ~~assurance~~the requirement that the Company properly ~~maintains~~maintain the leased assets and ~~carries~~carry appropriate ~~insurance, etc.~~insurance. The leases include credit support in the form of either cash, collateral or letters of credit. ~~See Note 19, “Commitments and Contingencies” for a description of cash held as security associated with the leases.~~

~~Future minimum lease payments under operating and finance leases (with initial or remaining lease terms in excess of one year) as of September 30, 2021 were as follows (in thousands):~~

Finance

Total

Operating Lease

Lease

Lease

Liability

Liability

Liabilities
Remainder of 2021

$
9,929

$
1,019

$
10,948
2022

39,932

4,012

43,944
2023

39,989

3,989

43,978
2024

39,957

3,996

43,953
2025 and thereafter

90,241

10,843

101,084
Total future minimum payments

220,048

23,859

243,907
Less imputed interest

(57,364)

(4,074)

(61,438)
Total

$
162,684

$
19,785

$
182,469

Rental expense for all operating leases was $9.6 million and $8.1 million for the three months ended September 30, 2021 and 2020, respectively. Rental expense for all operating leases was $25.8 million and $20.6 million for the nine months ended September 30, 2021 and 2020, respectively.

The gross profit on sale/leaseback transactions for all operating leases was $30.7 million and $25.2 million for the three months ended September 30, 2021 and 2020, respectively. The gross profit on sale/leaseback transactions for all operating leases was $66.1 million and $44.9 million for the nine months ended September 30, 2021 and 2020, respectively.

Right of use assets for sale/leaseback transactions obtained in exchange for new operating lease liabilities was $26.6 million and $24.6 million for the three months ended September 30, 2021 and 2020, respectively. Right of use assets for sale/leaseback transactions obtained in exchange for new operating lease liabilities was $62.5 million and $32.7 million for the nine months ended September 30, 2021 and 2020, respectively.

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~~Other information related to the operating leases are presented in the following table:~~

Nine months ended

Nine months ended

September 30, 2021

September 30, 2020
Cash payments (in thousands)
$
25,726

$
14,954
Weighted average remaining lease term (years)

5.72

4.55
Weighted average discount rate

11.2%

11.8%

Right of use assets obtained in exchange for new finance lease liabilities were $5.8 million and $0 for the three months ended September 30, 2021 and 2020, respectively. Right of use assets obtained in exchange for new finance lease liabilities were $17.9 million and $686 thousand for the nine months ended September 30, 2021 and 2020, respectively.

~~Other information related to the finance leases are presented in the following table:~~

Nine months ended

Nine months ended

September 30, 2021

September 30, 2020
Cash payments (in thousands)
$
2,128

$
252
Weighted average remaining lease term (years)

4.57

6.51
Weighted average discount rate

6.9%

9.6%

Finance Obligation

The Company has sold future services to be performed associated with certain sale/leaseback transactions and recorded the balance as a finance obligation. The outstanding balance of this obligation at ~~September 30, 2021~~March 31, 2022 was ~~$190.5~~$244.1 million, ~~$30.5~~$40.5 million and ~~$160.0~~$203.6 million of which was classified as short-term and long-term, respectively, on the accompanying unaudited interim condensed consolidated balance sheet. The outstanding balance of this obligation at December 31, ~~2020~~2021 was ~~$157.7~~$236.6 million, ~~$24.2~~$37.5 million and ~~$133.5~~$199.1 million of which was classified as short-term and long-term, respectively. The amount is amortized using the effective interest method. The fair value of this finance obligation approximated the carrying value as of ~~September 30, 2021~~March 31, 2022 and December 31, ~~2020.~~2021.

In prior periods, the Company entered into sale/leaseback transactions that were accounted for as financing transactions and reported as part of finance obligations. The outstanding balance of finance obligations related to sale/leaseback transactions at ~~September 30, 2021~~March 31, 2022 was ~~$17.3~~$16.1 million, ~~$5.1~~$3.8 million and ~~$12.2~~$12.3 million of which was classified as short-term and long-term, respectively on the accompanying consolidated balance sheet. The outstanding balance of this obligation at December 31, ~~2020~~2021 was ~~$23.9~~$17.0 million, ~~$8.0~~$4.5 million and ~~$15.9~~$12.5 million of which was classified as short-term and long-term, respectively on the accompanying consolidated balance sheets. The fair value of this finance obligation approximated the carrying value as of both ~~September 30, 2021~~March 31, 2022 and December 31, ~~2020.~~2021.

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~~Future minimum payments under finance obligations notes above as of September 30, 2021 were as follows (in thousands)~~

Total

Sale of Future

Sale/leaseback
Finance

revenue - debt

financings
Obligations
Remainder of 2021

$
12,788

$
1,680

$
14,468
2022

50,632

4,975

55,607
2023

50,632

3,148

53,780
2024

50,632

16,154

66,786
2025 and thereafter

86,614

—

86,614
Total future minimum payments

251,298

25,957

277,255
Less imputed interest

(60,760)

(8,658)

(69,418)
Total

$
190,538

$
17,299

$
207,837

~~Other information related to the above finance obligations are presented in the following table:~~

Nine months ended

Nine months ended

September 30, 2021

September 30, 2020
Cash payments (in thousands)
$
41,325

$
31,693
Weighted average remaining term (years)

4.88

4.74
Weighted average discount rate

11.3%

11.3%

Restricted Cash

In connection with certain of the above noted sale/leaseback agreements, cash of ~~$301.3~~$252.6 million and $275.1 million was required to be restricted as security as of ~~September 30,~~March 31, 2022 and December 31, 2021, respectively, which restricted cash will be released over the lease term. As of ~~September 30,~~March 31, 2022 and December 31, 2021, the Company also had certain letters of credit backed by ~~restricted cash~~security deposits totaling ~~$137.7~~$339.7 million and $286.0 million, respectively, that are security for the above noted sale/leaseback agreements.

~~Fair Value~~As of both March 31, 2022 and December 31, 2021, the Company had $67.7 million held in escrow related to the construction of certain hydrogen plants.

The Company ~~records~~also had $5.0 million of consideration held by our paying agent in connection with the ~~fair value~~Applied Cryo acquisition reported as restricted cash as of ~~assets and liabilities in accordance~~March 31, 2022, with ~~ASC 820,~~ ~~Fair Value Measurement~~ ~~(“ASC 820”). ASC 820 defines fair value as the price received to sell an asset or paid to transfer~~ a corresponding accrued liability in an orderly transaction between market participants at the measurement date and in the principal or most advantageous market for that asset or liability. The fair value should be calculated based on assumptions that market participants would use in pricing the asset or liability, not on assumptions specific to the entity.

In addition to defining fair value, ASC 820 expands the disclosure requirements around fair value and establishes a fair value hierarchy for valuation inputs. The hierarchy prioritizes the inputs into three levels based on the ~~extent to which inputs used~~Company’s unaudited interim condensed consolidated balance sheet. Additionally, the Company had $15.3 million in measuring fair value are observable in the market. Each fair value measurement is reported in one of the three levels, which is determined by the lowest level input that is significant to the fair value measurement in its entirety.

~~These levels are:~~
● ~~Level 1 — quoted prices (unadjusted) in active markets for identical assets or liabilities.~~
● Level 2 — quoted prices for similar assets and liabilities in active markets or inputs that are observable for the asset or liability, either directly or indirectly through market corroboration, for substantially the full term of the financial instrument.
● ~~Level 3 — unobservable inputs reflecting management’s own assumptions about the inputs used in pricing the asset or liability at fair value.~~

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The fair values of the Company’s investments are based upon prices provided by an independent pricing service. Management has assessed and concluded that these prices are reasonable and has not adjusted any prices receivedrestricted cash as collateral resulting from the independent provider. Securities reported at fair value utilizing Level 1 inputs represent assets whose fair value is determined based upon observable unadjusted quoted market prices for identical assets in active markets. Level 2 securities represent assets whose fair value is determined using observable market information such as previous day trade prices, quotes from less active markets or quoted prices of securities with similar characteristics. There were no transfers between Level 1, Level 2, or Level 3 during the nine months ended September 30, 2021.Frames acquisition.

~~Assets and liabilities measured at fair value on a recurring basis are summarized below (in thousands):~~

As of September 30, 2021

Carrying

Fair

Fair Value Measurements

Amount

Value

Level 1

Level 2

Level 3
Assets

Cash equivalents (1)
$
610,651
$
610,651
$
140,574
$
470,077
$
—
Corporate bonds

530,089

530,089

—

530,089

—
Commercial paper

35,795

35,795

—

35,795

—
U.S. Treasuries

169,878

169,878

169,878

—

—
Certificates of deposit

17,004

17,004

—

17,004

—
Equity securities

147,649

147,649

147,649

—

—

Liabilities

Contingent consideration

18,520

18,520

—

—

18,520
Convertible senior notes

192,320

1,006,639

—

1,006,639

—
Long-term debt

147,255

147,255

—

—

147,255
Finance obligations

207,837

207,837

—

—

207,837

As of December 31, 2020

Carrying

Fair

Fair Value Measurements

Amount

Value

Level 1

Level 2

Level 3
Liabilities

Contingent consideration

9,760

9,760

—

—

9,760
Convertible senior notes

85,640

1,272,766

—

1,272,766

—
Long-term debt

175,402

175,402

—

—

175,402
Finance obligations

181,553

181,553

—

—

181,553
~~(1)~~ ~~Included in~~ ~~“Cash and cash equivalents” in our consolidated balance sheets as of September 30, 2021.~~
The fair values for available-for-sale and equity securities are based on prices obtained from independent pricing services. Available-for-sale securities are characterized as Level 2 assets, as their fair values are determined using observable market inputs. Equity securities are characterized as Level 1 assets, as their fair values are determined using active markets for identical assets.

~~Available-for-sale securities~~

The amortized cost, gross unrealized gains and losses, fair value of those investments classified as available-for-sale securities, and allowance for credit losses at September 30, 2021 are summarized as follows (in thousands):

Amortized

Gross

Gross

Fair

Allowance for

Cost

Unrealized Gains

Unrealized Losses

Value

Credit Losses
Corporate bonds
$
533,691

$
93

$
(3,695)

$
530,089

—
Commercial paper

35,719

76

—

35,795

—
Certificates of deposit

17,017

—

(13)

17,004

—
U.S. Treasuries

170,414

1

(537)

169,878

—
Total
$
756,841

$
170

$
(4,245)

$
752,766

$
—

5743

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~~A summary of the amortized cost and fair value of investments classified as available-for-sale, by contractual maturity, at September 30, 2021 is as follows (in thousands):~~Investments

Our investment portfolio, including cash and cash equivalents, totaled $3.4 billion at March 31, 2022. Purchases of fixed maturity securities are classified as available-for-sale at the time of purchase based on individual security.

September 30, 2021

Amortized

Fair
Maturity:

Cost

Value
Within one year
$
447,479

$
446,011
After one through five years

309,362

306,755
Total
$
756,841

$
752,766

The ~~cost, gross unrealized gains, gross unrealized losses,~~composition of our investment portfolio, including cash and ~~fair value~~cash equivalents, as of ~~those investments classified as equity securities at September 30, 2021 are summarized as follows~~March 31, 2022, is shown in the following table, (in thousands):

September 30, 2021

Carrying

Percentage of

Gross

Gross

Fair

Amount

Portfolio

Cost

Unrealized Gains

Unrealized Losses

Value
Fixed income mutual funds
$
77,766

$
—

$
(132)

$
77,634
Exchange traded mutual funds

70,167

—

(152)

70,015
Total
$
147,933

$
—

$
(284)

$
147,649
Fixed maturity securities - available-for-sale

U.S. Treasuries

$
554,307

16.1%
Corporate bonds

244,921

7.1%
Total fixed maturity securities - available-for-sale

$
799,228

23.2%
Equity securities

147,826

4.3%
Cash and cash equivalents

2,495,614

72.5%
Total investments, including cash and cash equivalents

$
3,442,668

100.0%

Extended Maintenance Contracts

On a quarterly basis, we evaluate any potential losses related to our extended maintenance contracts for fuel cell systems and related infrastructure that ~~has~~have been sold. ~~We measure~~The following table shows the rollforward of balance in the accrual for loss ~~accruals at~~contracts, including changes due to the customer contract level. The expected revenues and expenses for these contracts include all applicable expected costs of providing services over the remaining term of the contracts and the related unearned net revenue. A loss is recognized if the sum of expected costs of providing services under the remaining term of the contract exceeds related unearned net revenue and is recorded as a provision for loss ~~contracts related~~accrual, loss accrual from acquisition, releases to service ~~in the consolidated statements~~cost of ~~operations. A key component of these estimates is the expected future service costs. In estimating the expected future costs, the Company considers its current service cost level~~sales, and applies significant judgment related to expected cost saving initiatives. The expected future cost savings will be primarily dependent upon the success of the Company’s initiatives related to increasing stack life, achieving better economies of scale for service labor, and improvements in design and operations of infrastructure. If the expected cost saving initiatives are not realized, this will increase the estimated costs of providing services and will adversely affect our estimated contract loss accrual. Further, we continue to work to improve quality and reliability; however, unanticipated additional quality issues or warranty claims may arise and additional material charges may be incurred in the future. These quality issues could also adversely affect our contract loss accrual. Service costs during 2021 have been higher than previously estimated. The Company has undertaken or will soon undertake several initiatives to extend the life and improve the reliability of its equipment. As a result of these initiatives and our additional expectation that the increase in certain costs attributablereleases due to the global pandemic will abate, the Company believes that its contract loss accrual is sufficient. However, if elevated service costs persist, the Company will adjust its estimated future service costs and increase its contract loss accrual estimate. provision for warrants (in thousands):

~~Off-Balance Sheet Arrangements~~

Three months ended

Year ended

March 31, 2022

December 31, 2021
Beginning balance
$
89,773

$
24,013
Provision for loss accrual

2,048

71,988
Loss accrual from acquisition

—

2,636
Releases to service cost of sales

(9,345)

(8,864)
Ending balance
$
82,476

$
89,773

The Company does not have off-balance sheet arrangements that are likely to have a current or future significant effect on the Company’s financial condition, changes in financial condition, revenues or expenses, results of operations, liquidity, capital expenditures or capital resources that is material to investors.

Critical Accounting Estimates

Management’s discussion and analysis of our financial condition and results of operations are based upon our consolidated financial statements, which have been prepared in accordance with GAAP. The preparation of these unaudited interim condensed consolidated financial statements requires us to make estimates and judgments that affect the reported amounts of assets,

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liabilities, revenues and expenses, and related disclosure of contingent assets and liabilities at the date of and during the reporting period. On an ~~on-going~~ongoing basis, we evaluate our estimates and judgments, including those related to revenue recognition, bad debts, inventories, goodwill and intangible assets, ~~impairment~~valuation of long-lived assets, ~~and PPA executory contract consideration,~~ accrual for service loss ~~on extended maintenance~~ contracts, operating and finance leases, product warranty accruals, unbilled revenue, common stock warrants, income taxes, stock-based compensation, and contingencies. We base our estimates and judgments on historical experience and on various other factors and assumptions that are believed to be reasonable under the circumstances, the results of which form the basis for making judgments about (1) the carrying values of assets and liabilities and (2) the amount of revenue and expenses realized that are not readily apparent from other sources. Actual results may differ from these estimates under different assumptions or conditions.

There have been no changes in our critical accounting estimates from those reported in our ~~2020 10-K, other than the addition of stock-based compensation.~~2021 Form 10-K.

~~Stock-based compensation~~44

Stock-based compensation represents the cost related to stock-based awards granted to employees and directors. In September 2021, the Company issued performance stock option awards that include a market condition for certain executives. The Company uses the Monte Carlo simulation model to determine the fair valueTable of performance stock option awards that include a market condition. In estimating fair value, management is required to make certain assumptions and estimates such as the expected term, volatility of the Company’s future share price, risk-free rate, and future dividend yield. Changes in assumptions used to estimate fair value could result in materially different results.Contents

Recent Accounting Pronouncements

Recently Adopted Accounting Guidance

Other than the adoption of the accounting guidance mentioned in our ~~2020~~2021 Form 10-K, ~~and ASU 2020-06,~~ there have been no other significant changes in our reported financial position or results of operations and cash flows resulting from the adoption of new accounting pronouncements.

On January 1, 2021, we early adopted ASU No. 2020-06, Debt—Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging—Contracts in Entity’s Own Equity (Subtopic 815-40) using the modified retrospective approach. Consequently, the Company’s 3.75% Convertible Senior Notes is now accounted for as a single liability measured at its amortized cost. This accounting change removed the impact of recognizing the equity component of the Company’s convertible notes at issuance and the subsequent accounting impact of additional interest expense from debt discount amortization. Future interest expense of the convertible notes will be lower as a result of adoption of this guidance and net loss per share will be computed using the if-converted method for convertible instruments. The cumulative effect of the accounting change upon adoption on January 1, 2021 increased the carrying amount of the 3.75% Convertible Senior Notes by $120.6 million, reduced accumulated deficit by $9.6 million and reduced additional paid-in capital by $130.2 million as of September 30, 2021.

Recent Accounting Guidance Not Yet Effective

Item 3 — Quantitative and Qualitative Disclosures about Market Risk

There has been no material change from the information provided in the ~~2020~~Company’s Annual Report on Form 10-K for the year ended December 31, 2021 under the section titled “Item 7A: Quantitative and Qualitative Disclosures About Market ~~Risk,~~Risk.” ~~other than those described below.~~

During the first nine months of 2021, the Company purchased U.S. Treasury securities, corporate bonds, commercial paper, certificates of deposit and money market funds, in which the major components of market risk affecting us are credit risk and interest rate risk. We also purchased equity securities, in which the major component of market risk affecting us is equity risk.

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Our exposure to changes in foreign currency rates is primarily related to sourcing inventory from foreign locations and operations of HyPulsion, S.A.S., our French subsidiary that develops and sells hydrogen fuel cell systems for the European material handling market. In addition, we also have an investment in HyVia, a joint venture with Renault that plans to manufacture and sell FCE-LCVs and to supply hydrogen fuel and fueling stations to support the FCE-LCV market primarily in Europe. Our exposure to foreign currency can give rise to foreign exchange risk resulting from our equity method investment with HyVia, which operates in Europe. The Company reviews the level of foreign content as part of its ongoing evaluation of overall sourcing strategies and considers the exposure to be not significant. Our HyPulsion exposure presently is mitigated by low levels of operations and its sourcing is primarily intercompany in nature and denominated in U.S. dollars. Our HyVia exposure presently is immaterial as we have not yet commenced commercial activities.

Item 4 — Controls and Procedures

~~(a) Disclosure controls and procedures.~~
(a) Disclosure Controls and Procedures

We maintain disclosure controls and procedures that are designed to ensure that information required to be disclosed in our reports that we file or submit under the Exchange Act, is recorded, processed, summarized and reported within the time periods specified in SEC rules and forms, and that such information is accumulated and communicated to our management, including our Chief Executive Officer (our principal executive officer) and Chief Financial Officer (our principal financial officer) as appropriate, to allow for timely decisions regarding required disclosure.

Our management, with the participation of our Chief Executive Officer and Chief Financial Officer, has evaluated the effectiveness of our disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Exchange Act), as of the end of the period covered by this report. Based on such evaluation, our Chief Executive Officer and Chief Financial Officer have concluded that our disclosure controls and procedures were not effective in 2018, 2019, 2020 and ~~2020~~2021 because of the material ~~weakness~~weaknesses in internal control over financial reporting described in Part II, Item 9A “Controls and Procedures” of our ~~2020 10-K.~~Annual Report Form 10-K for the year ended December 31, 2021. The material ~~weakness has~~weaknesses have not been remediated as of ~~September 30, 2021.~~ March 31, 2022.

Material Weakness

Management identified that the following deficiency existed in internal control over financial reporting in 2018, 2019, 2020 and ~~2020:~~2021: the Company did not maintain a sufficient complement of trained, knowledgeable resources to execute its responsibilities with respect to internal control over financial reporting for certain financial statement accounts and disclosures. As a consequence, the Company did not conduct an effective risk assessment process that was responsive to changes in the Company's operating environment and did not design and implement effective process-level controls ~~activities~~ in the following areas:

(a) ~~Presentation~~presentation of operating expenses;
(b) ~~Accounting~~accrual for ~~lease-related transactions;~~loss contracts related to service; and
(c) ~~Identification and evaluation of impairment, accrual for loss contracts, certain expense accruals, and deemed dividends; and~~
~~(d)~~ ~~Timely~~ identification of adjustments to physical ~~inventory in interim periods.~~inventory.

As of December 31, 2021, management identified additional deficiencies which were also the result of the Company not maintaining a sufficient complement of trained, knowledgeable resources to execute its responsibilities and conduct an effective risk assessment. Specifically, the process-level controls to ensure proper capitalization of inventory costs were not performed with an appropriate level of precision to detect and prevent a material misstatement. Additionally, management identified ineffective general information technology control activities over an information technology system that is used in calculating fuel billings, due to the ineffective risk assessment in identifying the relevant system.

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Management did not design and implement general information technology control activities in response to the current year growth in fuel delivered to customers.

The control deficiency, related to the accrual for loss contracts related to service, resulted in a material misstatement that was corrected prior to the filing of the Annual Report on Form 10-K for of the year ended December 31, 2021. We did not identify any other material misstatements to the consolidated financial statements and there were no changes to previously issued financial results as a result of the other control deficiencies; however, the control deficiencies described above created a reasonable possibility that a material misstatement to the consolidated financial statements would not be prevented or detected on a timely basis. As a result, we concluded the deficiencies described above represent material weaknesses in our internal control over financial reporting, and our internal control over financial reporting was not effective as of December 31, 2021.

The Company acquired Applied Cryo Technologies and Frames Holdings B.V. (together, the “Acquired Companies”) during 2021, and management excluded from its assessment of the effectiveness of the Company’s internal control over financial reporting as of December 31, 2021, the Acquired Companies’ internal control over financial reporting associated with total assets of $369.1 million and total revenues of $15.8 million included in the consolidated financial statements of the Company as of and the year ended December 31, 2021.

Remediation Activities

As reported on our ~~2020~~Annual Report on Form 10-K for the year ended December 31, 2021, we continue to take steps to remediate this material weakness and will continue to take further steps until such remediation is complete. These steps include the following:

Hiring additional resources, including third-party resources, with the appropriate technical accounting expertise, and strengthening internal training, to assist us in identifying and addressing any complex technical accounting issues that affect our consolidated financial statements.

~~We will design~~Designing and ~~implement~~implementing a comprehensive and continuous risk assessment process to identify and assess risks of material misstatements, and ensure that the impacted financial reporting processes and related internal controls are properly designed, maintained, and documented to respond to those risks in our financial reporting.

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~~We will implement~~Implementing more structured analysis and review procedures and documentation for the application of GAAP, complex accounting matters, and key accounting policies.

~~We will augment~~Augmenting our current estimation policies and procedures to be more robust and in-line with overall market dynamics, including an evaluation of our operating environment, in order to ensure operating effectiveness of certain process-level control activities.

~~We also intend to deploy~~Deploying new tools and tracking mechanisms to help enhance and maintain the appropriate documentation surrounding our classification of operating expenses.

~~We will report~~Further enhancing our policies, procedures, and controls related to physical inventory counting both in interim periods and at year-end.

Implementing general information technology controls over our information technology system used in calculating fuel billings.

Implementing structured analysis and review procedures around the manual processes related to capitalization of inventory costs.

Reporting regularly to the Company’s Audit Committee on the progress and results of the remediation plan, including the identification, status, and resolution of internal control deficiencies.

As we work to improve our internal control over financial reporting, we may modify our remediation plan and may implement additional measures as we continue to review, optimize, and enhance our financial reporting controls and procedures in the ordinary course. The material ~~weakness~~weaknesses will not be considered remediated until the remediated controls have been operating for a sufficient period of time and can be evidenced through testing that ~~they~~these controls are operating effectively.

Table of Contents

~~(b)~~(c) Changes in internal control over financial ~~reporting.~~

reporting

Exclusive of the steps taken inas part of the remediation activities, there were no changes in the Company’s internal control over financial reporting (as defined in Rules 13a-15(f) and 15d-15(f) under the Exchange Act) that occurred during the quarter ended ~~September 30, 2021~~March 31, 2022 that ~~has~~have materially affected, or are reasonably likely to materially affect, the Company’s internal control over financial reporting.

~~PART~~Part II. OTHER INFORMATION

Item 1 —– Legal Proceedings

On August 28, 2018, a lawsuit was filed on behalf of multiple individuals against the Company and five corporate co-defendants in the 9th Judicial District Court, Rapides Parish, Louisiana. The lawsuit relatesRefer to ~~the previously disclosed May 2018 accident involving a forklift powered by~~Part I, Item 3, “Legal Proceedings,” of the Company’s fuel cell at a Procter & Gamble facility in Louisiana. The lawsuit alleges claims against the Company and co-defendants, including Structural Composites Industries, Deep South Equipment Co., Air Products and Chemicals, Inc., and Hyster-Yale Group, Inc. for claims under the Louisiana Product Liability Act (“LPLA”) including defect in construction and/or composition, design defect, inadequate warning, breach of express warranty and negligence for wrongful death and personal injuries, among other damages. Procter & Gamble has intervened in that suit to recover worker’s compensation benefits paid to orAnnual Report on Form 10-K for the employees/dependents. Procter & Gamble has also filed suit for property damage, business interruption, loss of revenue, expenses, and other damages. Procter & Gamble alleges theories under the LPLA, breach of warranty and quasi-contractual claims under Louisiana law. Defendants include the Company and several of the same co-defendants from the August 2018 lawsuit, including Structural Composites Industries, Deep South Equipment Co., and Hyster-Yale Group, Inc.

In March and May 2021, Company stockholders, individually and on behalf of all persons who purchased or otherwise acquired Plug securities between November 9, 2020 and March 16, 2021 (the “Class”), filed complaints in the U.S. District Court for the Southern District of New York and U.S. District Court for the Central District of California against the Company, Plug Chief Executive Officer Andrew Marsh, and Plug Chief Financial Officer Paul Middleton (together, the “Defendants”), captioned ~~Dawn Beverly et al. v. Plug Power Inc. et al.~~~~, Case No. 1:21-cv-02004 (S.D.N.Y.),~~ ~~Smolíček~~~~v. Plug Power Inc. et al.~~~~, Case No. 2:21-cv-02402 (C.D. Cal.) and~~ ~~Tank v. Plug Power Inc. et al.~~, Case No. 1:21-cv-03985 (S.D.N.Y.). The complaints include two claims, for (1) violation of Section 10(b) of the Exchange Act and Rule 10b5 promulgated thereunder (against all Defendants); and (2) violation of Section 20(a) of the Exchange Act (against Mr. Marsh and Mr. Middleton). The complaints allege that Defendants failed to disclose that the Company (i) “would be unable to timely file its 2020 annual report due to delays related to the review of classification of certain costs and the recoverability of the right to use assets with certain leases”; and (ii) “was reasonably likely to report material weaknesses

~~Table of Contents~~

in its internal control over financial reporting[.]” The complaints allege that, a result, “positive statements about the Company’s business, operations, and prospects were materially misleading and/or lacked a reasonable basis,” causing Class members losses and damages. The complaints seek compensatory damages “in an amount to be proven at trial, including interest thereon”; “reasonable costs and expenses incurred in th[e] action”; and “[s]uch other and further relief as the [c]ourt may deem just and proper.” On July 22, 2021, the U.S. District Court for the Southern District of New York consolidated the three cases and appointed a lead plaintiff. On July 28, 2021, ~~Tank v. Plug Power, et. al.~~~~, was voluntarily dismissed. An amended complaint was filed in the consolidated action on October 6, 2021.~~

~~On March~~year ended December 31, 2021 ~~Company stockholder Junwei Liu, derivatively and on behalf~~for a full description of ~~nominal defendant Plug, filed a complaint in the U.S. District Court for the Southern District of New York against certain Company directors and officers (the “Derivative Defendants”), captioned~~ ~~Liu v. Marsh et al.~~~~, Case No. 1:21-cv-02753 (S.D.N.Y.) (the “~~~~Liu~~ ~~Derivative Complaint”). The~~ ~~Liu~~ Derivative Complaint alleges that, between November 9, 2020 and March 1, 2021, the Derivative Defendants “made, or caused the Company to make, materially false and misleading statements concerning Plug Power’s business, operations, and prospects” by “issu[ing] positive financial information and optimistic guidance, and made assurances that the Company’s internal controls were effective,” when, “[i]n reality, the Company’s internal controls suffered fromour material ~~deficiencies that rendered them ineffective.” The~~ ~~Liu~~ Derivative Complaint asserts claims for (1) breach of fiduciary duties, (2) unjust enrichment, (3) abuse of control, (4) gross mismanagement, (5) waste of corporate assets, and (6) contribution under Sections 10(b) and 21D of the Exchange Act (as to the named officer defendants). The ~~Liu~~ Derivative Complaint seeks a judgment “[d]eclaring that Plaintiff may maintain this action on behalf of Plug”; “[d]eclaring that the [Derivative] Defendants have breached and/or aided and abetted the breach of their fiduciary duties”; “awarding to Plug Power the damages sustained by it as a result of the violations” set forth in the ~~Liu~~ Derivative Complaint, “together with pre-judgment and post-judgment interest thereon”; “[d]irecting Plug Power and the [Derivative] Defendants to take all necessary actions to reform and improve Plug Power’s corporate governance and internal procedures to comply with applicable laws”; and “[a]warding Plaintiff the costs and disbursements of this action, including reasonable attorneys’ and experts’ fees, costs, and expenses”; and “[s]uch other and further relief as the [c]ourt may deem just and proper.”

On April 5, 2021, Company stockholders Elias Levy and Camerohn X. Withers, derivatively and on behalf of nominal defendant Plug, filed a complaint in the U.S. District Court for the Southern District of New York against the Derivative Defendants named in the ~~Liu~~ ~~Derivative Complaint, captioned~~ ~~Levy et al. v. McNamee et al.~~~~, Case No. 1:21-cv-02891 (S.D.N.Y.) (the “~~~~Levy~~ ~~Derivative Complaint”). The~~ ~~Levy~~ Derivative Complaint alleges that, from November 9, 2020 to April 5, 2021, the Derivative Defendants “breached their duties of loyalty and good faith” by failing to disclose “(1) that the Company would be unable to timely file its 2020 annual report due to delays related to the review of classification of certain costs and the recoverability of the right to use assets with certain leases; (2) that the Company was reasonably likely to report material weaknesses in its internal control over financial reporting; and (3) that, as a result of the foregoing, Defendants’ positive statements about the Company’s business, operations, and prospects were materially misleading and/or lacked a reasonable basis.” The ~~Levy~~ Derivative Complaint asserts claims for (1) breach of fiduciary duty (as to the named director defendants), (2) unjust enrichment (as to certain named director defendants), (3) waste of corporate assets (as to the named director defendants), and (4) violations of Sections 10(b) and 21D of the Exchange Act (as to the named officer defendants). The ~~Levy~~ Derivative Complaint seeks a judgment “declaring that Plaintiffs may maintain this action on behalf of the Company”; finding the Derivative Defendants “liable for breaching their fiduciary duties owed to the Company”; directing the Derivative Defendants “to take all necessary actions to reform and improve the Company’s corporate governance, risk management, and internal operating procedures to comply with applicable laws”; “awarding damages to the Company for the harm the Company suffered as a result of Defendants’ wrongful conduct”; “awarding damages to the Company for [the named officer Derivative Defendants’] violations of Sections 10(b) and 21D of the Exchange Act”; “awarding Plaintiffs the costs and disbursements of this action, including attorneys’, accountants’, and experts’ fees”; and “awarding such other and further relief as is just and equitable.” On April 27, 2021, the U.S. District Court for the Southern District of New York consolidated the ~~Liu~~ ~~Derivative Complaint and the~~ ~~Levy~~ ~~Derivative Complaint under Case No. 1:21-cv-02753-ER (the “Consolidated Action”).~~

On May 13, 2021, Company stockholder Romario St. Clair, derivatively and on behalf of nominal defendant Plug, filed a complaint in the Supreme Court of the State of New York, County of New York against the Derivative Defendants named in the ~~Liu~~ ~~Derivative Complaint, captioned~~ ~~St. Clair v. Plug Power Inc. et al.~~~~, Index No. 653167/2021 (N.Y. Sup. Ct., N.Y. Cty.) (the “~~~~St. Clair~~ ~~Derivative Complaint”). The~~ ~~St. Clair~~ ~~Derivative Complaint alleges that, for~~

~~Table of Contents~~

approximately two years beginning on March 13, 2019, the Company “failed to disclose and misrepresented the following material, adverse facts, which the [Derivative] Defendants knew, consciously disregarded, or were reckless in not knowing,” including: “(a) that the Company was experiencing known but undisclosed material weaknesses in its internal controls over financial reporting; (b) the Company was overstating the carrying amount of certain right of use assets and finance obligations associated with leases; (c) the Company was understating its loss accrual on certain service contracts; (d) the Company would need to take impairment charges relating to certain long-lived assets; (e) the Company was improperly classifying research [and] development costs versus costs of goods sold; and (f) the Company would be unable to file its Annual Report for the 2020 fiscal year due to these errors.” The ~~St. Clair~~ ~~Derivative Complaint asserts claims for (1) breach of fiduciary and (2) unjust enrichment. The~~ ~~St. Clair~~ Derivative Complaint seeks a judgment “for the amount of damages sustained by the Company” as a result of the Derivative Defendants’ breaches of fiduciary duties and unjust enrichment; “[d]irecting Plug Power to take all necessary actions to reform and improve its corporate governance and internal procedures to comply with applicable laws”; for “equitable and/or injunctive relief as permitted by law, equity, and state statutory provisions”; “awarding to Plug Power restitution” and “ordering disgorgement of all profits, benefits, and other compensation obtained” by the Derivative Defendants; “awarding to plaintiff the costs and disbursements of the action, including reasonable attorneys’ fees, accountants’ and experts’ fees, costs, and expenses”; and “granting such other and further relief as the [c]ourt deems just and proper.”pending legal matters.

Item 1A – Risk Factors

~~The~~In addition to the other information set forth in this Quarterly Report on Form 10-Q, you should carefully consider the risk factors ~~discussed under~~that could materially affect the ~~heading “Risk Factors” and elsewhere~~Company’s business, financial condition or future results discussed in the Company’s Annual Report on Form 10-K for the year ended December 31, ~~2020 continue~~2021 in Part I, Item 1A. “Risk Factors.” The risks described in the Annual Report on Form 10-K are not the only risks that could affect the Company. Additional risks and uncertainties not currently known to ~~apply~~us or that we currently deem to be immaterial may also materially adversely affect our business, financial condition and/or operating results in the future. There have been no material changes to our ~~business.~~risk factors since December 31, 2021.

Item 2 - Unregistered Sales of Equity Securities and Use of Proceeds

(a) Not applicable.

(b) Not applicable.

(c) None.

Item 3 — Defaults Upon Senior Securities

None.

Item 4 — Mine Safety Disclosures

None.

Item 5 — Other Information

None.

6347

Table of Contents

Item 6 — Exhibits

3.1
Amended and Restated Certificate of Incorporation of Plug Power Inc. (filed as Exhibit 3.1 to Plug Power Inc.’s Annual Report on Form 10-K for the year ended December 31, 2008 and incorporated by reference herein).
3.2
Certificate of Amendment to Amended and Restated Certificate of Incorporation of Plug Power Inc. (filed as Exhibit 3.3 to Plug Power Inc.’s Annual Report on Form 10-K for the year ended December 31, 2008 and incorporated by reference herein).
3.3
Second Certificate of Amendment of Amended and Restated Certificate of Incorporation of Plug Power Inc. (filed as Exhibit 3.1 to Plug Power Inc.’s Current Report on Form 8-K filed on May 19, 2011 and incorporated by reference herein).
3.4
Third Certificate of Amendment of Amended and Restated Certificate of Incorporation of Plug Power Inc. (filed as Exhibit 3.1 to Plug Power Inc.’s Current Report on Form 8-K filed on July 25, 2014 and incorporated by reference herein).
3.5
Certificate of Correction to Third Certificate of Amendment of Amended and Restated Certificate of Incorporation of Plug Power Inc. (filed as Exhibit 3.9 to Plug Power Inc.’s Annual Report on Form 10-K for the year ended December 31, 2016 and incorporated by reference herein).
3.6
Fourth Certificate of Amendment of Amended and Restated Certificate of Incorporation of Plug Power Inc. (filed as Exhibit 3.1 to Plug Power Inc.’s Current Report on Form 8-K filed on June 30, 2017 and incorporated by reference herein).
3.7
Fifth Certificate of Amendment of Amended and Restated Certificate of Incorporation of Plug Power Inc. (filed as Exhibit 3.7 to Plug Power Inc.’s Quarterly Report on Form 10-Q filed on August 5, 2021 and incorporated by reference herein).
3.8
Certificate of Designations, Preferences and Rights of a Series of Preferred Stock of Plug Power Inc. classifying and designating the Series A Junior Participating Cumulative Preferred Stock. (filed as Exhibit 3.1 to Plug Power Inc.’s Registration Statement on Form 8-A filed on June 24, 2009 and incorporated by reference herein).
3.9
Fourth Amended and Restated By-laws of Plug Power Inc. (filed as Exhibit 3.9 to Plug Power Inc.’s Annual Report on Form 10-K for the year ended December 31, 2020 and incorporated by reference herein).
~~10.1 (1)~~10.1*
~~Eleventh Amendment and Waiver to the Loan and Security~~Executive Employment Agreement, dated ~~September 30, 2021, by~~as of April 16, 2019, between Sanjay Shrestha and ~~among~~ Plug Power Inc.~~, Emerging Power Inc., Emergent Power Inc., the other borrowers from time to time party thereto, and Generate PPL SPV I, LLC, as assignee of Generate Lending, LLC.~~
~~31.1 (1)~~10.2*
Executive Employment Agreement, dated as of December 7, 2020, between Dirk Ole Hoefelmann and Plug Power Inc.
31.1*
Certification pursuant to 18 U.S.C. Section 1350, adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
~~31.2 (1)~~31.2*
Certification pursuant to 18 U.S.C. Section 1350, adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
~~32.1 (1)~~32.1**
Certification pursuant to 18 U.S.C. Section 1350, adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
~~32.2 (1)~~32.2**
Certification pursuant to 18 U.S.C. Section 1350, adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
101.INS*
Inline XBRL Instance Document ~~(1)~~
101.SCH*
Inline XBRL Taxonomy Extension Schema Document ~~(1)~~
101.CAL*
Inline XBRL Taxonomy Extension Calculation Linkbase Document ~~(1)~~
101.DEF*
Inline XBRL Taxonomy Extension Definition Linkbase Document ~~(1)~~
101.LAB*
Inline XBRL Taxonomy Extension Labels Linkbase Document ~~(1)~~
101.PRE*
Inline XBRL Taxonomy Extension Presentation Linkbase Document ~~(1)~~
~~104~~104*
Cover Page Interactive Data File (embedded within the Inline XBRL document) ~~(1)~~
~~(1)~~ ~~Filed herewith.~~
*
Submitted electronically herewith.

6448

Table of Contents

**	Pursuant to Item 601(b)(32)(ii) of Regulation S-K, this certification is not being filed for purposes of Section 18 of the Securities Exchange Act of 1934, as amended.

Signatures

Pursuant to requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

PLUG POWER INC.

Date: ~~November~~May 9, ~~2021~~2022
By:
/s/ Andrew Marsh

Andrew Marsh

President, Chief Executive
Officer and Director (Principal
Executive Officer)

Date: ~~November~~May 9, ~~2021~~2022
By:
/s/ Paul B. Middleton

Paul B. Middleton

Chief Financial Officer (Principal
Financial Officer)

6549


	At September 30,
	2021	2020
Stock options outstanding (1)	24,784,288	14,434,983
Restricted stock outstanding (2)	4,960,376	5,992,974
Common stock warrants (3)	80,017,181	110,573,392
Convertible Senior Notes (4)	39,170,766	56,872,730
Number of dilutive potential shares of common stock	148,932,611	187,874,079


December 31, 2021	$	127,317
December 31, 2022		93,321
December 31, 2023		62,920
December 31, 2024		33,692
December 31, 2025		—


	Amount
	(in thousands)
Principal amount	$	212,463
Less initial purchasers' discount		(6,374)
Less cost of related capped calls		(16,253)
Less other issuance costs		(617)
Net proceeds	$	189,219


	December 31, 2020	November 2, 2020
Risk-free interest rate	0.58%	0.58%
Volatility	75.00%	75.00%
Expected average term	6.26	6.42
Exercise price	$13.81	$13.81
Stock price	$33.91	$15.47


		As of September 30, 2021
		Carrying		Fair		Fair Value Measurements
		Amount		Value		Level 1		Level 2		Level 3
Assets
Cash equivalents (1)	$	610,651	$	610,651	$	140,574	$	470,077	$	—
Corporate bonds		530,089		530,089		—		530,089		—
Commercial paper		35,795		35,795		—		35,795		—
U.S. Treasuries		169,878		169,878		169,878		—		—
Certificates of deposit		17,004		17,004		—		17,004		—
Equity securities		147,649		147,649		147,649		—		—

Liabilities
Contingent consideration		18,520		18,520		—		—		18,520
Convertible senior notes		192,320		1,006,639		—		1,006,639		—
Long-term debt		147,255		147,255		—		—		147,255
Finance obligations		207,837		207,837		—		—		207,837


		As of December 31, 2020
		Carrying		Fair		Fair Value Measurements
		Amount		Value		Level 1		Level 2		Level 3
Liabilities
Contingent consideration		9,760		9,760		—		—		9,760
Convertible senior notes		85,640		1,272,766		—		1,272,766		—
Long-term debt		175,402		175,402		—		—		175,402
Finance obligations		181,553		181,553		—		—		181,553


	Revenues				Long-Lived Assets as of
	Three Months Ended				Three Months Ended
	March 31, 2022		March 31, 2021		March 31, 2022		December 31, 2021

North America	$	113,678	$	69,646	$	665,992	$	570,778
Other		27,126		2,312		5,796		2,778
Total	$	140,804	$	71,958	$	671,788	$	573,556


	Nine months		Year
	ended or at		ended or at
	September 30, 2021		December 31, 2020
Cash and cash equivalents at end of period	$	3,371,962	$	1,312,404
Restricted cash at end of period		481,230		321,880
Working capital at end of period		4,518,052		1,380,830
Net loss attributable to common stockholders		(267,051)		(596,181)
Net cash used in operating activities		(348,501)		(155,476)
Net cash used in investing activities		(1,014,294)		(95,334)
Net cash provided by financing activities		3,581,762		1,515,529


	September 30, 2021								Carrying		Percentage of
			Gross		Gross		Fair		Amount		Portfolio
		Cost	Unrealized Gains		Unrealized Losses		Value
Fixed income mutual funds	$	77,766	$	—	$	(132)	$	77,634
Exchange traded mutual funds		70,167		—		(152)		70,015
Total	$	147,933	$	—	$	(284)	$	147,649
Fixed maturity securities - available-for-sale
U.S. Treasuries									$	554,307	16.1%
Corporate bonds										244,921	7.1%
Total fixed maturity securities - available-for-sale									$	799,228	23.2%
Equity securities										147,826	4.3%
Cash and cash equivalents										2,495,614	72.5%
Total investments, including cash and cash equivalents									$	3,442,668	100.0%


3.1	Amended and Restated Certificate of Incorporation of Plug Power Inc. (filed as Exhibit 3.1 to Plug Power Inc.’s Annual Report on Form 10-K for the year ended December 31, 2008 and incorporated by reference herein).
3.2	Certificate of Amendment to Amended and Restated Certificate of Incorporation of Plug Power Inc. (filed as Exhibit 3.3 to Plug Power Inc.’s Annual Report on Form 10-K for the year ended December 31, 2008 and incorporated by reference herein).
3.3	Second Certificate of Amendment of Amended and Restated Certificate of Incorporation of Plug Power Inc. (filed as Exhibit 3.1 to Plug Power Inc.’s Current Report on Form 8-K filed on May 19, 2011 and incorporated by reference herein).
3.4	Third Certificate of Amendment of Amended and Restated Certificate of Incorporation of Plug Power Inc. (filed as Exhibit 3.1 to Plug Power Inc.’s Current Report on Form 8-K filed on July 25, 2014 and incorporated by reference herein).
3.5	Certificate of Correction to Third Certificate of Amendment of Amended and Restated Certificate of Incorporation of Plug Power Inc. (filed as Exhibit 3.9 to Plug Power Inc.’s Annual Report on Form 10-K for the year ended December 31, 2016 and incorporated by reference herein).
3.6	Fourth Certificate of Amendment of Amended and Restated Certificate of Incorporation of Plug Power Inc. (filed as Exhibit 3.1 to Plug Power Inc.’s Current Report on Form 8-K filed on June 30, 2017 and incorporated by reference herein).
3.7	Fifth Certificate of Amendment of Amended and Restated Certificate of Incorporation of Plug Power Inc. (filed as Exhibit 3.7 to Plug Power Inc.’s Quarterly Report on Form 10-Q filed on August 5, 2021 and incorporated by reference herein).
3.8	Certificate of Designations, Preferences and Rights of a Series of Preferred Stock of Plug Power Inc. classifying and designating the Series A Junior Participating Cumulative Preferred Stock. (filed as Exhibit 3.1 to Plug Power Inc.’s Registration Statement on Form 8-A filed on June 24, 2009 and incorporated by reference herein).
3.9	Fourth Amended and Restated By-laws of Plug Power Inc. (filed as Exhibit 3.9 to Plug Power Inc.’s Annual Report on Form 10-K for the year ended December 31, 2020 and incorporated by reference herein).
~~10.1 (1)~~10.1*	~~Eleventh Amendment and Waiver to the Loan and Security~~Executive Employment Agreement, dated ~~September 30, 2021, by~~as of April 16, 2019, between Sanjay Shrestha and ~~among~~ Plug Power Inc.~~, Emerging Power Inc., Emergent Power Inc., the other borrowers from time to time party thereto, and Generate PPL SPV I, LLC, as assignee of Generate Lending, LLC.~~
~~31.1 (1)~~10.2*	Executive Employment Agreement, dated as of December 7, 2020, between Dirk Ole Hoefelmann and Plug Power Inc.
31.1*	Certification pursuant to 18 U.S.C. Section 1350, adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
~~31.2 (1)~~31.2*	Certification pursuant to 18 U.S.C. Section 1350, adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
~~32.1 (1)~~32.1**	Certification pursuant to 18 U.S.C. Section 1350, adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
~~32.2 (1)~~32.2**	Certification pursuant to 18 U.S.C. Section 1350, adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
101.INS*	Inline XBRL Instance Document ~~(1)~~
101.SCH*	Inline XBRL Taxonomy Extension Schema Document ~~(1)~~
101.CAL*	Inline XBRL Taxonomy Extension Calculation Linkbase Document ~~(1)~~
101.DEF*	Inline XBRL Taxonomy Extension Definition Linkbase Document ~~(1)~~
101.LAB*	Inline XBRL Taxonomy Extension Labels Linkbase Document ~~(1)~~
101.PRE*	Inline XBRL Taxonomy Extension Presentation Linkbase Document ~~(1)~~
~~104~~104*	Cover Page Interactive Data File (embedded within the Inline XBRL document) ~~(1)~~


	PLUG POWER INC.

Date: ~~November~~May 9, ~~2021~~2022	By:	/s/ Andrew Marsh
		Andrew Marsh
		President, Chief Executive Officer and Director (Principal Executive Officer)

Date: ~~November~~May 9, ~~2021~~2022	By:	/s/ Paul B. Middleton
		Paul B. Middleton
		Chief Financial Officer (Principal Financial Officer)