CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 353,563	$ 59,774
Short-term investments	257,432	230,692
Prepaid expenses and other current assets	11,846	6,098
Total current assets	622,841	296,564
Property and equipment, net	52	77
Operating lease right-of-use assets	1,074	0
Other assets	100	147
Long-term investments	43,182	140,397
Total assets	667,249	437,185
Current liabilities:
Accounts payable	3,099	3,169
Accrued expenses and other current liabilities	11,901	8,577
Income tax payable	46,502	0
Operating lease liabilities, current	533	0
Total current liabilities	62,035	11,746
Long-term liabilities:
Operating lease liabilities, net of current portion	596	0
Deferred rent	0	65
Total liabilities	62,631	11,811
Commitments and contingencies (Note 11)
Stockholders' equity:
Common stock, $0.0001 par value, 150,000,000 shares authorized as of June 30, 2022 and December 31, 2021; 45,396,398 and 44,292,102 shares issued and outstanding as of June 30, 2022 and December 31, 2021, respectively.	5	4
Additional paid-in capital	604,275	584,714
Accumulated other comprehensive loss	(3,633)	(838)
Retained earnings (accumulated deficit)	3,891	(158,909)
Total Cullinan stockholders' equity	604,538	424,971
Noncontrolling interests	80	403
Total stockholders' equity	604,618	425,374
Total liabilities and stockholders' equity	$ 667,249	$ 437,185