Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Cash flows from operating activities
Net loss	$ (37,330)	$ (22,397)
Adjustments to reconcile net loss to net cash used in operating activities
Depreciation	328	234
Amortization of marketable securities	69
Stock-based compensation	3,855	2,147
Non-cash operating lease expense	628	568
Loss on disposal of property and equipment	173
Changes in operating assets and liabilities:
Prepaid expenses and other current assets	(2,036)	(1,859)
Accounts payable	952	452
Accrued expenses and other current liabilities	(693)	(872)
Lease liability	(623)	(144)
Deferred revenue	(3,765)	(7,023)
Deposits and other assets	(793)
Net cash flows used in operating activities	(39,235)	(28,894)
Cash flows from investing activities
Purchases of property and equipment	(69)	(1,026)
Purchase of marketable securities	(174,996)
Sales and maturities of marketable securities	29,500
Net cash flows used in investing activities	(145,565)	(1,026)
Cash flows from financing activities
Proceeds from initial public offering, net of offering costs		131,302
Payment of preferred issuance costs		(146)
Proceeds from exercise of stock options	1,070	277
Net cash flows provided by financing activities	1,070	131,433
Net increase (decrease) in cash and cash equivalents and restricted cash	(183,730)	101,513
Cash, cash equivalents and restricted cash, beginning of period	233,089	163,363
Cash, cash equivalents and restricted cash, end of period	49,359	264,876
Cash and cash equivalents	48,487	264,004
Restricted cash included in other assets	872	872
Cash, cash equivalents and restricted cash, end of period	49,359	264,876
Supplemental disclosure of non-cash activities
Purchases of property and equipment in accrued expense	$ 943	100
Right-of-use assets and lease liabilities recognized upon lease inception		$ 7,541