Unaudited Condensed Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Cash flows from operating activities
Net Income (Loss)	$ (23,234)	$ (27,460)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	240	293
Stock-based compensation	2,300	3,614
Changes in operating assets and liabilities:
Prepaid expenses and other assets	(860)	(2,106)
Accounts payable and accrued expenses	(8,978)	3,151
Right-of-use assets and lease liabilities, net	(296)	(146)
Net cash used in operating activities	(30,828)	(22,654)
Cash flows from investing activities
Purchases of property and equipment	0	(50)
Net cash used in investing activities	0	(50)
Cash flows from financing activities
Payments for taxes related to net settlement of equity awards	(13)	(116)
Net cash used in financing activities	(13)	(116)
Net decrease in cash and cash equivalents	(30,841)	(22,820)
Cash and cash equivalents, beginning of period	111,471	215,507
Cash and cash equivalents, end of period	80,630	192,687
Supplemental disclosure of non-cash investing and financing activities
Tax related to net settlement of equity awards included in accounts payable and accrued expenses	$ 9	$ 17