Unaudited Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024
Operating activities
Net loss	$ (40,119)	$ (38,512)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	1,267	1,278
Stock-based compensation expense	2,847	3,235
Change in fair value of derivative tranche liability	1,800	0
Impairment of right-of-use asset	494	0
Loss on the sale of property and equipment	67	0
Non-cash lease expense	1,443	1,285
Non-cash interest and other expenses	17	68
Change in operating assets and liabilities:
Prepaid expenses and other current assets	(109)	(343)
Accounts payable	(561)	1,024
Accrued expenses and other liabilities	(393)	(310)
Deferred revenue	(385)	0
Operating lease assets and liabilities	(2,214)	(1,999)
Net cash used in operating activities	(35,846)	(34,274)
Investing activities
Purchases of property and equipment	(279)	(178)
Proceeds from the sale of property and equipment	36	0
Net cash used in investing activities	(243)	(178)
Financing activities
Proceeds from issuance of common stock and pre-funded warrants, net	32,562	0
Proceeds allocated to the derivative tranche liability	14,930	0
Proceeds from exercise of stock options	3	33
Principal payments on finance leases	(93)	(268)
Principal payments on financing obligation	(97)	(345)
Payments of deferred offering costs	0	(820)
Net cash provided by (used in) financing activities	47,305	(1,400)
Net change in cash, cash equivalents, and restricted cash	11,216	(35,852)
Cash, cash equivalents and restricted cash – beginning of year	65,663	40,004
Cash, cash equivalents and restricted cash – end of period	76,879	4,152
Supplemental disclosures of cash flow information:
Finance lease right-of-use asset converted to fixed asset	290	0
Issuance costs in accounts payable and accrued expenses	230	0
Deferred offering costs in accounts payable and accrued expenses	$ 0	$ 2,504