Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		21 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024
Cash flows from operating activities
Net loss			$ (74,546)	$ (61,290)
Adjustments to reconcile net loss to net cash used in operating activities
Amortization of investment premiums			(13,236)	(5,500)
Amortization of financing costs	$ 24	$ 2	70	62
Stock-based compensation	8,982	4,481	24,045	12,670
Amortization of right-of-use assets			236	218
Realized gain on investment	(109)	0	(111)	0
Interest expense related to operating lease liability			27	33
Changes in operating assets and liabilities:
Prepaid expenses and other current assets			(1,059)	6,466
Accrued interest, net of interest received on maturity of investments			1,845	422
Accounts payable			(7,258)	(2,819)
Accrued expenses			13,652	(5,738)
Lease liability			(274)	(260)
Net cash used in operating activities			(56,609)	(55,736)
Cash flows from investing activities
Purchases of investments			(976,408)	(380,770)
Proceeds from maturities of investments			416,458	165,951
Net cash used in investing activities			(559,950)	(214,819)
Cash flows from financing activities
Public offering, net of offering costs			597,094	269,760
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			9,813	6,580
ATM offering, net of fees			46,658	1,969
Net cash provided by financing activities			611,464	271,188
Net (decrease) increase in cash and cash equivalents			(5,095)	633
Cash and cash equivalents beginning of period			55,516	36,632	$ 36,632
Effect of exchange rate changes on cash			(74)	(80)
Cash and cash equivalents end of period	$ 50,347	$ 37,185	50,347	37,185	$ 50,347
Supplemental disclosure of non-cash investing and financing transactions
Unpaid deferred public offering and other financing costs			50	$ 50
Right-of-use asset obtained in exchange for lease obligation			$ 223