Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Current assets:
Cash and cash equivalents	$ 611,512	$ 397,451
Short-term investments	875,006	682,776
Prepaid expenses and other current assets	30,554	15,727
Total current assets	1,517,072	1,095,954
Property and equipment, net	84,835	79,626
Operating lease right-of-use assets	28,905	30,997
Long-term investments	413,247	162,675
Restricted cash	1,103	1,103
Other assets	46,143	37,562
Total noncurrent assets	574,233	311,963
Total assets	2,091,305	1,407,917
Current liabilities:
Accounts payable	21,717	14,587
Accrued compensation	3,088	11,056
Accrued manufacturing expenses	926	52,767
Accrued expenses	54,171	59,815
Operating lease liabilities — current	7,202	7,113
Total current liabilities	87,104	145,338
Operating lease liabilities — long-term	20,218	22,111
Total liabilities	107,322	167,449
Commitments and contingencies
Stockholders' Equity
Preferred stock, $0.001 par value — 10,000,000 shares authorized at March 31, 2024 and December 31, 2023; no shares issued and outstanding at March 31, 2024 and December 31, 2023	0	0
Common stock, $0.001 par value — 500,000,000 shares authorized at March 31, 2024 and December 31, 2023; 108,755,731 and 95,364,831 shares issued and outstanding at March 31, 2024 and December 31, 2023, respectively	112	98
Additional paid-in capital	3,000,394	2,164,583
Accumulated other comprehensive gain	2,889	179
Accumulated deficit	(1,019,412)	(924,392)
Total stockholders' equity	1,983,983	1,240,468
Total liabilities and stockholders' equity	$ 2,091,305	$ 1,407,917