CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 67,602	$ 45,157
Marketable securities	284,367	143,555
Collaboration receivable	5,878	0
Prepaid expenses and other current assets	11,924	21,163
Total current assets	369,771	209,875
Property and equipment, net	11,191	7,681
Restricted cash	3,950	3,950
Right-of-use assets, operating leases	81,490	25,340
Other non-current assets	2,790	5,210
Total assets	469,192	252,056
Current liabilities:
Accounts payable	3,277	5,990
Accrued expenses and other current liabilities	11,325	7,576
Income taxes payable	4,024	0
Operating lease obligations, current portion	7,909	8,406
Deferred revenue, current portion	132,261	0
Total current liabilities	158,796	21,972
Operating lease obligations, net of current portion	60,321	17,530
Deferred revenue, net of current portion	7,715	0
Total liabilities	226,832	39,502
Commitments and contingencies (Note 10)
Stockholders’ equity:
Common stock, par value $0.0001; 150,000,000 shares authorized; 33,461,771 shares issued and 33,437,296 shares outstanding as of December 31, 2023 and 31,448,508 shares issued and 31,394,767 shares outstanding as of December 31, 2022	3	3
Additional paid‑in capital	437,132	402,893
Accumulated other comprehensive income (loss)	195	(2,057)
Accumulated deficit	(194,970)	(188,285)
Total stockholders’ equity	242,360	212,554
Total liabilities and stockholders’ equity	$ 469,192	$ 252,056