v3.26.1
CONDENSED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Cash flows from operating activities:    
Net loss $ (24,688) $ (37,784)
Adjustments to reconcile net loss to net cash used in operating activities:    
Depreciation and amortization 555 1,287
Amortization of premiums and discounts on marketable securities (100) (386)
Stock-based compensation 648 1,951
Noncash operating lease expense 315 288
Asset impairment 5,077  
Changes in operating assets and liabilities:    
Prepaid expenses and other assets (113) (1,716)
Accounts payable 567 (2,809)
Accrued liabilities and other liabilities (4,722) 4,016
Lease liabilities (545) (488)
Other long-term liabilities (72) (66)
Net cash used in operating activities (23,078) (35,707)
Cash flows from investing activities:    
Sales and maturities of marketable securities 11,086 37,558
Purchases of marketable securities   (26,705)
Net cash provided by investing activities 11,086 10,853
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 shares issued under ESPP 22 19
Net cash provided by financing activities 1,270 2,019
Net increase (decrease) in cash and cash equivalents (10,722) (22,835)
Cash and cash equivalents - beginning of period 25,982 27,727
Cash and cash equivalents - end of period 15,260 4,892
Supplemental disclosures of cash flow information:    
Cash paid for interest $ 27 $ 32