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:    
Consolidated net loss $ (21,102) $ (34,413)
Adjustments to reconcile net loss to net cash used in operating activities:    
Depreciation and amortization 330 333
Stock-based compensation 2,452 2,483
Accretion of discount of available-for-sale investment securities (401) (981)
Amortization of right-of-use assets 469 437
Gain on financing lease bargain purchase option (48) 0
Changes in operating assets and liabilities:    
Other receivables 455 1,238
Prepaid expenses and other assets 109 1,445
Accounts payable and accrued expenses (3,733) 485
Operating lease liability (399) (341)
Net cash used in operating activities (21,868) (29,314)
Cash flows from investing activities:    
Purchases of property and equipment (211) (9)
Purchases of available-for-sale investment securities (13,846) (41,260)
Maturities of available-for-sale investment securities 40,873 40,150
Net cash provided by (used in) investing activities 26,816 (1,119)
Cash flows from financing activities:    
Proceeds from issuance of common stock through option exercises 0 19
Proceeds from issuance of common stock through employee stock purchase plan 16 79
Proceeds from issuance of common stock from at-the-market offerings, net of offering costs 0 36,691
Principal paid on finance lease liabilities (287) (264)
Net cash (used in) provided by financing activities (271) 36,525
Net change in cash, cash equivalents and restricted cash 4,677 6,092
Cash, cash equivalents and restricted cash at beginning of period 12,978 14,006
Cash, cash equivalents and restricted cash at the end of period 17,655 20,098
Cash and cash equivalents at the end of period 16,160 17,220
Restricted cash at the end of period 1,495 2,878
Cash, cash equivalents and restricted cash at the end of period 17,655 20,098
Supplemental disclosure of cash flow information:    
Interest paid 30 53
Purchases of property and equipment in accounts payable $ 0 $ 17