Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024
Operating activities:
Net loss	$ (22,641)	$ (23,254)
Adjustments to reconcile net loss to net cash used in operating activities:
Stock-based compensation	2,592	1,850
Operating lease right-of-use assets	222	233
Depreciation and amortization	75	73
Accretion of available-for-sale marketable securities, net	(778)	(717)
Changes in operating assets and liabilities:
Accounts payable	(439)	(324)
Accrued expenses and other liabilities	(1,003)	1,075
Prepaid expenses and other current assets	(1,606)	1,914
Net cash used in operating activities	(23,578)	(19,150)
Investing activities:
Proceeds from maturities of available-for-sale marketable securities	32,095	34,927
Purchases of available-for-sale marketable securities	(44,656)	(40,222)
Purchases of property, equipment and leasehold improvements	0	(28)
Net cash used in investing activities	(12,561)	(5,323)
Financing activities:
Proceeds from offering of common stock, net of commissions	108,154	0
Proceeds from exercises of warrants	10,757	0
Proceeds from exercises of stock options	731	218
Proceeds from Employee Stock Purchase Plan	59	34
Proceeds from at-the-market sales agreement, net of commissions and allocated fees	0	4,850
Payments of offering costs	(590)	0
Payments of finance lease	(11)	(63)
Net cash provided by financing activities	119,100	5,039
Net increase (decrease) in cash and cash equivalents	82,961	(19,434)
Cash and cash equivalents at beginning of period	34,097	32,397
Cash and cash equivalents at end of period	$ 117,058	$ 12,963