v3.26.1
CONDENSED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
6 Months Ended 12 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Dec. 31, 2024
Cash flows from operating activities:        
Net loss $ (24,688) $ (37,784) $ (55,844) $ (55,654)
Adjustments to reconcile net loss to net cash used in operating activities:        
Depreciation and amortization 555 1,287 2,185 2,865
Amortization of premiums and discounts on marketable securities (100) (386) (481) (1,230)
Stock-based compensation 648 1,951 2,986 6,335
Noncash operating lease expense 315 288 587 561
Asset impairment 5,077     1,786
Changes in operating assets and liabilities:        
Prepaid expenses and other assets (113) (1,716) 1,102 2,761
Accounts payable 567 (2,809) (3,342) 3,023
Accrued liabilities and other liabilities (4,722) 4,016 4,334 (332)
Lease liabilities (545) (488) (1,005) (796)
Other long-term liabilities (72) (66) (135) (124)
Net cash used in operating activities (23,078) (35,707) (49,613) (40,805)
Cash flows from investing activities:        
Sales and maturities of marketable securities 11,086 37,558 52,261 104,228
Purchases of marketable securities   (26,705) (26,705) (48,448)
Purchases of property and equipment       (474)
Net cash provided by investing activities 11,086 10,853 25,556 55,306
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     23
Proceeds from shares issued under ESPP 22 19 36 82
Net cash provided by financing activities 1,270 2,019 22,312 144
Net increase (decrease) in cash and cash equivalents (10,722) (22,835) (1,745) 14,645
Cash and cash equivalents - beginning of period 25,982 27,727 27,727 13,082
Cash and cash equivalents - end of period 15,260 4,892 25,982 27,727
Supplemental disclosures of cash flow information:        
Cash paid for interest $ 27 $ 32 62 72
Private Placement        
Cash flows from financing activities:        
Net proceeds from at-the-market sales     $ 22,276  
At-the-market sales        
Cash flows from financing activities:        
Net proceeds from at-the-market sales       $ 39