Condensed Balance Sheets (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 278,401	$ 68,985
Short-term investments	83,825	176,985
Prepaid expenses and other current assets	7,533	10,378
Total current assets	369,759	256,348
Property and equipment, net	9,947	7,954
Operating lease right-of-use assets	22,887	27,958
Long-term investments	3,977	27,117
Restricted cash	871	871
Other assets	4,624	4,089
Total noncurrent assets	42,306	67,989
Total assets	412,065	324,337
Current liabilities:
Accounts payable	5,485	6,758
Accrued compensation	3,451	3,455
Accrued manufacturing expenses	10,269	4,440
Accrued expenses	13,678	8,787
Operating lease liabilities — current	6,426	5,276
Total current liabilities	39,309	28,716
Operating lease liabilities — long-term	13,356	11,507
Other liabilities	89	96
Total liabilities	52,754	40,319
Commitments and contingencies (Note 6)
Stockholders' Equity
Preferred stock, $0.001 par value - 10,000,000 shares authorized at September 30, 2022 and December 31, 2021; no shares issued and outstanding at September 30, 2022 and December 31, 2021	0	0
Common stock, $0.001 par value - 500,000,000 shares authorized at September 30, 2022 and December 31, 2021; 60,572,692 and 53,031,978 shares issued and outstanding at September 30, 2022 and December 31, 2021, respectively	64	56
Additional paid-in capital	803,980	582,844
Accumulated other comprehensive loss	(657)	(241)
Accumulated deficit	(444,076)	(298,641)
Total stockholders' equity	359,311	284,018
Total liabilities and stockholders' equity	$ 412,065	$ 324,337