Condensed Statements of Cash Flows $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2025 USD ($)	Sep. 30, 2025 USD ($)	Sep. 30, 2024 USD ($)
Operating Activities
Net loss		$ (66,409)	$ (109,124)
Adjustments to reconcile net loss to net cash used in operating activities
Depreciation expense	$ 400	1,362	1,279
Non-cash operating lease expense		1,674	2,096
Stock-based compensation expense		7,682	14,604
Change in fair value of warrant liability		(4,099)
Impairment of property and equipment	2,205	2,205
Changes in operating assets and liabilities:
Prepaid expenses and other current assets		7,255	(3,331)
Other assets		619	874
Accounts payable		(6,531)	2,068
Accrued expenses and other current liabilities		1,708	2,350
Operating lease liabilities		(1,895)	(706)
Net cash used in operating activities		(56,429)	(89,890)
Investing Activities
Purchase of property and equipment		0	(280)
Net cash used in investing activities		0	(280)
Financing Activities
Proceeds from issuances of common stock under at the market equity offering program		5,032	0
Proceeds from issuance of common stock, common warrants and pre-funded warrants from public offerings		40,396	0
Payments of financing costs		(753)	0
Proceeds from stock option exercise and purchases under the employee stock purchase plan		117	1,255
Net cash provided by financing activities		44,792	1,255
Net decrease in cash, cash equivalents, and restricted cash		(11,637)	(88,915)
Cash, cash equivalents, and restricted cash at the beginning of the period		58,648	177,236
Cash, cash equivalents, and restricted cash at the end of the period	47,011	47,011	88,321
Non-cash financing and investing activities:
Acquisition of property and equipment in accounts payable and accrued liabilities		0	68
Financing costs included in accounts payable and accrued liabilities		11	0
Reconciliation of cash and cash equivalents, and restricted cash:
Cash and cash equivalents	46,642	46,642	87,952
Restricted cash	369	369	369
Cash, cash equivalents, and restricted cash at the end of the period	$ 47,011	$ 47,011	$ 88,321