CONDENSED CONSOLIDATED STATEMENT OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Cash flows from operating activities:
Net loss	$ (65,910)	$ (31,410)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation expense	65
Equity-based compensation expense	9,884	2,387
Amortization of discounts on marketable securities	(5,750)
Non-cash lease expense	546
Changes in operating assets and liabilities:
Prepaid expenses and other current assets	(2,675)	(1,964)
Other non-current assets	(67)
Accounts payable	3,384	10,339
Operating lease liability	(507)
Accrued expenses	94	(4,479)
Net cash used in operating activities	(60,936)	(25,127)
Cash flows from investing activities:
Purchases of marketable securities	(352,859)
Maturities of marketable securities	152,810
Purchases of property and equipment	(402)
Net cash used in investing activities	(200,451)
Cash flows from financing activities:
Proceeds from issuance of common stock, net of issuance costs	449,955
Proceeds from exercise of options and employee stock purchase plan purchases	415
Payment of deferred offering costs		(1,694)
Net cash provided by (used in) financing activities	450,370	(1,694)
Increase (decrease) in cash, cash equivalents and restricted cash	188,983	(26,821)
Cash, cash equivalents and restricted cash, beginning of period	118,610	15,189
Cash, cash equivalents and restricted cash, end of period	307,593	125,069
Supplemental disclosures of non-cash activities:
Operating lease right-of-use asset obtained in exchange for operating lease liability	2,556
Deferred financing issuance costs in accrued liability		1,384
Deferred financing issuance costs in accounts payable		391
Reconciliation of cash, cash equivalents and restricted cash:
Cash and cash equivalents	307,299	125,069
Restricted cash	294
Total	$ 307,593	$ 125,069