Consolidated Balance Sheets - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Current assets:
Cash and cash equivalents	$ 222	$ 150
Marketable securities	759	828
Receivable from collaboration partners ($— and $6 from a related party)	11	20
Prepaid expenses and other current assets	15	18
Total current assets	1,007	1,016
Long-term marketable securities	29	14
Property and equipment, net	40	47
Other noncurrent assets	63	73
Total assets	1,139	1,150
Current liabilities:
Accounts payable ($24 and $— to a related party)	42	18
Deferred revenue ($35 and $85 to a related party)	35	85
Other current liabilities	154	123
Total current liabilities	231	226
Deferred revenue, noncurrent ($43 and $234 to a related party)	43	234
Long-term debt	99	48
Other noncurrent liabilities	135	157
Commitments (Note 17)
Stockholders’ equity:
Common stock and additional paid-in capital: $0.0001 par value per share; 400.0 shares authorized; 125.3 shares in 2025 and 92.2 shares in 2024 issued and outstanding	2,116	1,617
Accumulated deficit	(1,485)	(1,132)
Total stockholders’ equity	631	485
Total liabilities and stockholders’ equity	$ 1,139	$ 1,150