CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 59,774	$ 168,198	[1]
Short-term investments	230,692	42,008	[1]
Prepaid expenses and other current assets	6,098	2,072	[1]
Total current assets	296,564	212,278	[1]
Property and equipment, net	77	130	[1]
Other assets	147	2,300	[1]
Long-term investments	140,397	0	[1]
Total assets	437,185	214,708	[1]
Current liabilities:
Accounts payable	3,169	9,679	[1]
Accrued expenses and other current liabilities	8,577	4,641	[1]
Total current liabilities	11,746	14,320	[1]
Long-term liabilities:
Deferred rent	65	74	[1]
Total liabilities	11,811	14,394	[1]
Commitments and contingencies (Note 11)
Stockholders' equity:
Common stock, $0.0001 par value, 150,000,000 and 34,900,878 shares authorized as of December 31, 2021 and December 31, 2020, respectively; 44,292,102 and 29,831,125 shares issued and outstanding as of December 31, 2021 and December 31, 2020, respectively.	4	3	[1]
Additional paid-in capital	584,714	292,348	[1]
Accumulated other comprehensive loss	(838)	(2)	[1]
Accumulated deficit	(158,909)	(93,339)	[1]
Total Cullinan stockholders' equity	424,971	199,010	[1]
Noncontrolling interests	403	1,304	[1]
Total stockholders' equity	425,374	200,314	[1]
Total liabilities and stockholders' equity	$ 437,185	$ 214,708	[1]

[1] The consolidated balance sheet as of December 31, 2020 is derived from the consolidated financial statements as of that date and was retroactively adjusted, including shares and per share amounts, as a result of the Reorganization and Reverse Stock Split. See Note 3 to the consolidated financial statements for additional details.