Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 72,889	$ 64,330
Marketable securities	220,672	296,112
Prepaid expenses and other current assets	5,083	6,686
Total current assets	298,644	367,128
Property and equipment, net	12,354	7,224
Restricted cash	5,237	5,237
Operating lease right-of-use assets	839	1,839
Other long term assets	7,193	2,696
Total assets	324,267	384,124
Current liabilities:
Accounts payable	6,320	7,077
Accrued expenses	18,620	12,992
Operating lease obligations, current portion	907	1,955
Total current liabilities	25,847	22,024
Success Payment Liability	1,756	4,371
Other long term liabilities	331	377
Total liabilities	27,934	26,772
Commitments and contingencies (See Note 7 and Note 8)
Stockholders' equity (deficit):
Preferred stock, $0.001 par value; 5,000,000 shares authorized; no shares issued and outstanding at March 31, 2022 and December 31, 2021, respectively	0	0
Common stock, $0.001 par value; 200,000,000 and 255,000,000 shares authorized, 48,655,241 and 48,511,735 shares issued and outstanding at March 31, 2022 and December 31, 2021, respectively	49	49
Additional paid-in capital	555,184	544,381
Accumulated other comprehensive income	(938)	(228)
Accumulated deficit	(257,962)	(186,850)
Total stockholders equity	296,333	357,352
Total liabilities, convertible preferred stock, and stockholders' equity (deficit)	$ 324,267	$ 384,124