Unaudited Condensed Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Cash flows from operating activities
Net loss	$ (20,719)	$ (34,967)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation	1,038	924
Stock-based compensation	11,382	10,974
Accretion of discounts on investments, net	(4,760)	(3,519)
Changes in operating assets and liabilities:
Accounts receivable	(7,500)	0
Prepaid expenses and other current assets	(2,933)	(590)
Other long-term assets	(131)	(1,043)
Accounts payable	(1,150)	(278)
Accrued expenses	1,487	883
Deferred revenue	(1,611)	(1,980)
Operating lease right-of-use assets and liabilities, net	39	631
Net cash used in operating activities	(24,858)	(28,965)
Cash flows from investing activities
Purchases of property and equipment	(292)	(865)
Purchases of short-term investments	(414,079)	(148,251)
Maturities of short-term investments	109,750	158,250
Net cash provided by (used in) investing activities	(304,621)	9,134
Cash flows from financing activities
Proceeds from exercise of common stock options and employee stock purchase plan	4,877	2,108
Proceeds from the issuance of common stock and pre-funded common stock warrants, net of issuance costs	320,059	0
Net cash provided by financing activities	324,936	2,108
Net decrease in cash, cash equivalents and restricted cash	(4,543)	(17,723)
Cash, cash equivalents and restricted cash - beginning of year	20,021	52,242
Cash, cash equivalents and restricted cash - end of period	15,478	34,519
Supplemental disclosure of noncash investing and financing activities
Unpaid property and equipment	0	460
Vesting of restricted common stock	10	139
Unrealized gain (loss) on available-for-sale securities, net	$ (2,281)	$ 475