CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 79,743	$ 45,157
Marketable securities	297,046	143,555
Collaboration receivable	3,744	0
Prepaid expenses and other current assets	9,662	21,163
Total current assets	390,195	209,875
Property and equipment, net	11,018	7,681
Restricted cash	3,950	3,950
Right-of-use assets, operating leases	88,282	25,340
Other non-current assets	538	5,210
Total assets	493,983	252,056
Current liabilities:
Accounts payable	2,422	5,990
Accrued expenses and other current liabilities	7,105	7,576
Income taxes payable	7,359	0
Operating lease obligations, current portion	7,409	8,406
Deferred revenue, current portion	101,645	0
Total current liabilities	125,940	21,972
Operating lease obligations, net of current portion	65,624	17,530
Deferred revenue, net of current portion	95,511	0
Total liabilities	287,075	39,502
Commitments and contingencies (Note 11)
Stockholders’ equity:
Common stock, par value $0.0001; 150,000,000 shares authorized; 33,239,813 shares issued and 33,205,693 shares outstanding as of June 30, 2023 and 31,448,508 shares issued and 31,394,767 shares outstanding as of December 31, 2022	3	3
Additional paid‑in capital	428,797	402,893
Accumulated other comprehensive loss	(1,005)	(2,057)
Accumulated deficit	(220,887)	(188,285)
Total stockholders’ equity	206,908	212,554
Total liabilities and stockholders’ equity	$ 493,983	$ 252,056