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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($)
$ in Thousands
 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Cash flows from operating activities:    
Net loss $ (41,419) $ (151,482)
Adjustments to reconcile net loss to net cash used in operating activities:    
Stock-based compensation expense 9,079 16,731
Amortization of operating lease right-of-use assets 1,066 1,215
Depreciation and amortization expense 606 382
Other non-cash adjustments 296 0
Changes in operating assets and liabilities:    
Accounts receivable 731 (8,154)
Inventory (21) (23,391)
Prepaid expenses and other current assets 5,359 15,311
Other non-current assets 28 (7,277)
Accounts payable 7,457 9,714
Accrued expenses (24,831) 16,032
Operating lease liabilities (1,036) (1,247)
Other current liabilities 5 (15)
Other non-current liabilities 0 (700)
Net cash used in operating activities (42,680) (132,881)
Cash flows from investing activities:    
Purchases of property and equipment (155) (145)
Net cash used in investing activities (155) (145)
Cash flows from financing activities:    
Proceeds from exercises of stock options 105 285
Proceeds from issuance of common stock under the employee stock purchase plan 178 191
Proceeds from at-the-market offering, net of commissions 4,484 39,285
Proceeds from underwritten public offering, net of underwriting discounts and commissions 54,048 0
Payments for at-the-market offering costs (145) (507)
Payments for underwritten public offering costs (217) 0
Net cash provided by financing activities 58,453 39,254
Net increase (decrease) in cash and cash equivalents 15,618 (93,772)
Cash and cash equivalents at beginning of period 69,349 200,641
Cash and cash equivalents at end of period 84,967 106,869
Supplemental disclosure of cash flow information    
Deferred offering costs in accrued expense 170 35
Deferred offering costs in accounts payable $ 270 $ 40