Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		18 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024
Cash flows from operating activities
Net loss			$ (49,606)	$ (38,756)
Adjustments to reconcile net loss to net cash used in operating activities
Amortization of investment premiums			(8,257)	(2,355)
Amortization of financing costs	$ 18	$ 32	46	60
Stock-based compensation	7,082	4,620	15,063	8,189
Amortization of right-of-use assets			149	145
Realized gain on investment	2	0	2	0
Interest expense related to operating lease liability			18	23
Changes in operating assets and liabilities:
Prepaid expenses and other current assets			1,669	5,093
Accrued interest, net of interest received on maturity of investments			498	176
Accounts payable			3,577	(2,919)
Accrued expenses			2,372	(5,561)
Lease liability			(178)	(173)
Net cash used in operating activities			(34,647)	(36,078)
Cash flows from investing activities
Purchases of investments			(826,423)	(301,371)
Proceeds from maturities of investments			240,572	99,086
Net cash used in investing activities			(585,851)	(202,285)
Cash flows from financing activities
Public offering, net of offering costs			597,094	269,833
Value of shares withheld related to employee tax withholding			(42,101)	(7,121)
Proceeds from option exercises and Employee Stock Purchase Plan common stock issuance			7,291	6,581
ATM offering, net of fees			46,658	1,969
Net cash provided by financing activities			608,942	271,262
Net (decrease) increase in cash and cash equivalents			(11,556)	32,899
Cash and cash equivalents beginning of period			55,516	36,632	$ 36,632
Effect of exchange rate changes on cash			(45)	(12)
Cash and cash equivalents end of period	$ 43,915	$ 69,519	43,915	69,519	$ 43,915
Supplemental disclosure of non-cash investing and financing transactions
Unpaid deferred public offering and other financing costs			$ 75	$ 34