Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Operating activities
Net loss	$ (27,169)	$ (37,201)
Reconciliation of net loss to net cash used in operating activities:
Stock-based compensation	2,208	1,464
Non-cash interest expense	337	0
Accretion of premium and interest on marketable securities	(175)	10
Depreciation expense	20	9
Changes in operating assets and liabilities:
Prepaid expenses and other assets	1,413	1,963
Accounts payable	(1,122)	(4,353)
Accrued expenses	(6,154)	14,657
Net cash used in operating activities	(30,642)	(23,451)
Investing activities
Purchase of marketable securities	0	(85,245)
Proceeds from sales and maturities of marketable securities	43,100	16,300
Net cash provided by (used in) investing activities	43,100	(68,945)
Financing activities
Proceeds from issuance of common stock, purchase warrants and pre-funded warrants for the purchase of common stock, net of underwriting discounts, commissions, and offering costsnet of underwriting discounts, commissions, and offering costs	46,503	0
Proceeds from issuance of common stock upon stock option exercises	1,466	19
Common stock repurchase	(19)	(25)
Net cash provided by (used in) financing activities	47,950	(6)
Increase (decrease) in cash and cash equivalents	60,408	(92,402)
Cash and cash equivalents, beginning of period	45,917	146,284
Cash and cash equivalents, end of period	106,325	53,882
Supplemental disclosure of cash flow information
Interest paid	1,392	0
Supplemental disclosure of non-cash financing activities
Offering costs in accounts payable and accrued expenses	390	0
Common stock repurchase in accrued expenses	$ 0	$ 25