v3.26.1
Condensed Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Cash flows from operating activities:    
Net loss $ (27,562) $ (155,439)
Adjustments to reconcile net loss to net cash provided by operating activities:    
Depreciation and amortization 21,684 72,229
Provision for credit losses and inventory 486 991
Stock-based compensation expense 4,282 4,180
Stock-based sales incentive charges 19,719 34,734
Change in fair value of derivative instruments (369) 1,101
Amortization of debt financing costs 2,338 2,589
Amortization of discounts and Section 30C tax credit (1,145) (2,285)
Loss on disposal of property and equipment 137 2,791
Impairment of goodwill 0 64,328
Loss from equity method investments 11,825 13,574
Non-cash lease expense 4,696 3,779
Deferred income taxes 110 (2,905)
Accretion of ARO liabilities 185 202
Changes in operating assets and liabilities:    
Accounts and other receivables 5,000 30,071
Inventory (291) (2,765)
Prepaid expenses and other assets 4,243 (551)
Operating lease liabilities (4,569) (3,823)
Accounts payable (4,409) (6,078)
Deferred revenue (8,974) 1,927
Accrued liabilities and other (6,962) 679
Net cash provided by operating activities 20,424 59,329
Cash flows from investing activities:    
Purchases of short-term investments (390,478) (520,812)
Maturities and sales of short-term investments 311,119 542,325
Payment and deposits on equipment and manure rights for ADG RNG production projects (1,152) (20,851)
Purchases of and deposits on property and equipment (10,535) (12,447)
Grant proceeds for capital projects 800 0
Proceeds received for joint development and construction of station projects 926 2,490
Disbursements for loans receivable 0 (2,400)
Proceeds from paydowns, maturities, and sales of loans receivable 43 40
Investments in other entities (26,828) 0
Proceeds from disposal of property and equipment 41 5,008
Net cash used in investing activities (116,064) (6,647)
Cash flows from financing activities:    
Issuance of common stock 0 52
Repurchase of common stock 0 (7,938)
Payment of tax withholdings on net settlement of equity awards (1,189) (498)
Proceeds for Adopt-A-Port program 0 465
Repayment of proceeds for Adopt-A-Port program (807) (1,708)
Repayments of debt instruments and finance lease obligations (666) (574)
Net cash used in financing activities (2,662) (10,201)
Effect of exchange rates on cash, cash equivalents and restricted cash (301) 160
Net increase/(decrease) in cash, cash equivalents and restricted cash (98,603) 42,641
Cash, cash equivalents and restricted cash, beginning of period 157,756 91,562
Cash, cash equivalents and restricted cash, end of period 59,153 134,203
Supplemental disclosure of cash flow information:    
Income taxes paid 65 22
Interest paid, net of $2,003 and $3,300 capitalized, respectively 8,881 2,661
Supplemental disclosure of non-cash financing activity:    
Interest paid-in-kind $ 0 $ (10,000)

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