v3.25.3
UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Cash flows used in operating activities:    
Net loss $ (32,872) $ (48,158)
Adjustments to reconcile net loss for the period to net cash used in operating activities:    
Non-cash interest expense, including accelerated amortization of original issue discount and issuance costs 9,236 15,249
Depreciation and amortization 1,534 1,706
Stock-based compensation 1,530 2,083
Asset retirement obligation adjustments and accretion (income) expense (1,676) 7,160
Gain on sale of assets, net (68) (7,696)
Other non-cash items (786) 1,144
Changes in operating assets and liabilities:    
Contract liabilities 3,900 0
Accounts payable, accrued expenses, and other liabilities (1,932) 368
Receivables (81) 334
Supplies inventories, net 20 11
Prepaids and deposits (962) (3)
Net cash used in operating activities (22,157) (27,802)
Cash flows provided by investing activities:    
Proceeds from sale of assets 697 7,118
Additions to property, plant, and equipment (447) (979)
Net cash provided by investing activities 250 6,139
Cash flows provided by (used in) financing activities:    
Proceeds from issuance of common stock, net of issuance costs 112,242 10,278
Principal payments (25) (38,091)
Net cash provided by (used in) financing activities 112,217 (27,813)
Net increase (decrease) in cash, cash equivalents, and restricted cash 90,310 (49,476)
Cash, cash equivalents, and restricted cash, beginning of period 77,057 132,550
Cash, cash equivalents, and restricted cash, end of period 167,367 83,074
Reconciliation of cash, cash equivalents, and restricted cash:    
Cash and cash equivalents 139,094 55,834
Restricted cash 28,273 27,240
Total cash, cash equivalents, and restricted cash $ 167,367 $ 83,074