v3.26.3
CONDENSED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Cash flows from operating activities:    
Net loss $ (31,534) $ (46,408)
Adjustments to reconcile net loss to net cash used in operating activities:    
Depreciation and amortization 555 1,820
Amortization of premiums and discounts on marketable securities (107) (432)
Gain on sale of assets (420)  
Gain on termination of leases (3,416)  
Stock-based compensation 844 2,551
Noncash operating lease expense 621 436
Asset impairment 5,077  
Changes in operating assets and liabilities:    
Prepaid expenses and other assets 817 (521)
Accounts payable 949 (2,962)
Accrued liabilities and other liabilities (6,100) 4,383
Lease liabilities (2,335) (742)
Other long-term liabilities (103) (100)
Net cash used in operating activities (35,152) (41,975)
Cash flows from investing activities:    
Sales and maturities of marketable securities 15,924 46,258
Proceeds from sale of equipment 703  
Purchases of marketable securities   (26,705)
Net cash provided by investing activities 16,627 19,553
Cash flows from financing activities:    
Proceeds from issuance of common stock   2,000
Net proceeds from at-the-market sales 1,234  
Proceeds from exercise of stock options 14  
Proceeds from exercise of pre-funded warrants 1  
Proceeds from shares issued under ESPP 22 19
Net cash provided by financing activities 1,271 2,019
Net decrease in cash and cash equivalents (17,254) (20,403)
Cash and cash equivalents - beginning of period 25,982 27,727
Cash and cash equivalents - end of period 8,728 7,324
Supplemental disclosures of cash flow information:    
Cash paid for interest $ 27 $ 47