CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 156,152	$ 59,774
Short-term investments	311,140	230,692
Prepaid expenses and other current assets	7,180	6,098
Total current assets	474,472	296,564
Property and equipment, net	1,174	77
Operating lease right-of-use assets	4,130	0
Other assets	459	147
Long-term investments	80,882	140,397
Total assets	561,117	437,185
Current liabilities:
Accounts payable	2,660	3,169
Accrued expenses and other current liabilities	14,135	8,577
Income tax payable	4,282
Operating lease liabilities, current	1,421
Total current liabilities	22,498	11,746
Long-term liabilities:
Lease liabilities, non-current	3,590
Deferred rent	0	65
Total liabilities	26,088	11,811
Commitments and contingencies (Note 12)
Stockholders' equity:
Preferred stock, $0.0001 par value, 10,000,000 shares authorized as of December 31, 2022 and 2021; no shares issued and outstanding as of December 31, 2022 and 2021, respectively.
Common stock, $0.0001 par value, 150,000,000 shares authorized as of December 31, 2022 and 2021; 45,796,449 and 44,292,102 shares issued and outstanding as of December 31, 2022 and 2021, respectively.	5	4
Additional paid-in capital	585,320	584,714
Accumulated other comprehensive loss	(2,601)	(838)
Accumulated deficit	(47,695)	(158,909)
Total Cullinan stockholders' equity	535,029	424,971
Noncontrolling interests	0	403
Total stockholders' equity	535,029	425,374
Total liabilities and stockholders' equity	$ 561,117	$ 437,185