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 $ (8,503) $ (49,594)
Adjustments to reconcile net loss to net cash used in operating activities:    
Stock-based compensation 2,021 5,319
Non-cash lease expense 97 143
Foreign exchange remeasurement loss (gain) 116 (637)
Impairment of property, plant and equipment and estimated cost to sell, net 181 16,569
Depreciation 260 510
Restructuring costs 0 (91)
In-process research and development expenses 0 10,000
Amortization (accretion) on invested securities 258 (181)
Non-cash interest expense 386 405
Loss on disposals of property and equipment 2 0
Changes in operating assets and liabilities:    
Prepaid expenses and other current assets 1,364 5,830
Other long-term assets 160 251
Accrued rent receivable (607) (2,693)
Accounts payable 17 (139)
Operating lease liabilities (151) (1,510)
Long term liabilities (8) 0
Accrued expenses and other current liabilities (1,572) (3,168)
Net cash used in operating activities (5,979) (18,986)
Cash flows from investing activities:    
Purchase of marketable securities (39,826) (76,907)
Maturities of marketable securities 44,800 85,700
Cash received from held for sale assets 0 418
Net cash provided by investing activities 4,974 9,211
Cash flows from financing activities:    
Proceeds from at-the-market offering, net of $0.3 million in issuance costs 0 6,611
Proceeds from exercise of stock options 0 475
Loan agreement closing costs 0 (172)
Net cash provided by financing activities 0 6,914
Net decrease in cash, cash equivalents and restricted cash (1,005) (2,861)
Effect of exchange rate changes on cash, cash equivalents and restricted cash (4) 64
Cash, cash equivalents and restricted cash—beginning of period 6,804 10,635
Cash, cash equivalents and restricted cash—end of period 5,795 7,838
Supplemental disclosure of cash flow information:    
Cash paid for interest 2,748 2,275
Noncash increase in operating lease ROU assets and lease liabilities resulting from lease modifications $ 2,213 $ 0