Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Current assets:
Cash and cash equivalents	$ 141,490	$ 206,180
Marketable securities	434,458	417,770
Collaboration receivable	3,040	5,897
Prepaid expenses and other current assets	11,899	8,102
Total current assets	590,887	637,949
Property and equipment, net	20,195	22,505
Restricted cash	4,774	4,774
Operating lease right-of-use assets	81,736	85,295
Other long term assets	3,318	2,165
Total assets	700,910	752,688
Current liabilities:
Accounts payable	6,833	6,636
Accrued expenses	19,762	20,178
Deferred revenue, current	3,479
Lease liability, current	10,293	10,192
Total current liabilities	40,367	37,006
Long-term lease liability	62,183	64,715
Success payment liability	971	2,720
Deferred revenue, non-current	51,153	48,556
Other long term liabilities	142	189
Total liabilities	154,816	153,186
Commitments and contingencies (See Note 7 and Note 8)
Stockholders' equity:
Preferred stock, $0.001 par value; 5,000,000 shares authorized; no shares issued and outstanding	0	0
Common stock, $0.001 par value; 200,000,000 shares authorized, 84,552,269 and 81,969,693 shares issued and outstanding at June 30, 2024 and December 31, 2023, respectively	85	82
Additional paid-in capital	1,189,470	1,143,453
Accumulated other comprehensive income (loss)	(615)	272
Accumulated deficit	(642,846)	(544,305)
Total stockholders equity	546,094	599,502
Total liabilities and stockholders' equity	$ 700,910	$ 752,688