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UNAUDITED 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 $ (62,809) $ (56,915)
Adjustments to reconcile net loss to net cash used in operating activities:    
Depreciation and amortization 5,424 6,072
Stock-based compensation 9,621 9,666
Accretion of discount on marketable securities (749) (1,368)
Other (487) (119)
Changes in operating assets and liabilities:    
Accounts receivable, net 0 (700)
Prepaid expenses and other current assets (1,720) 1,860
Operating lease right-of-use assets and liabilities (278) (268)
Other long-term assets 0 (86)
Accounts payable and accrued expenses (3,091) 3,308
Deferred revenue 218 (162)
Net cash used in operating activities (53,871) (38,712)
Cash Flows From Investing Activities    
Purchases of property and equipment (31) (248)
Investment in marketable securities (22,573) (57,940)
Proceeds from maturities of marketable securities 53,988 51,000
Proceeds from sales of property and equipment 46 1,183
Net cash provided by (used in) investing activities 31,430 (6,005)
Cash Flows From Financing Activities    
Principal payments on long-term debt (723) (1,843)
Principal payments on finance lease obligations 0 (72)
Proceeds from issuance of common stock, net 106,099 41,689
Proceeds from issuance of common stock through employee equity plans, net 4,906 2,016
Net cash provided by financing activities 110,282 41,790
Net increase (decrease) in cash, cash equivalents, and restricted cash 87,841 (2,927)
Cash, cash equivalents and restricted cash - Beginning of period 21,078 58,214
Cash, cash equivalents, and restricted cash - End of period $ 108,919 $ 55,287