Cullinan Therapeutics, Inc. (CGEM) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

71,718,503Shares Outstanding

19,551,091Shares held by institutions

$238,327,799Value of institutional holdings

87.87%Institutional ownership %

9.73%Shares Changed QoQ

149No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

Recent 13F filings as of December 2025 show that 149 institutional investors hold a position in Cullinan Therapeutics, Inc. (NASDAQ:CGEM).

The collective stake of institutional investors in Cullinan Therapeutics moved to 87.9% in December 2025, a shift up from the 85.0% reported for September 2025.
The company experienced a 9.73% quarterly change in institutional shares held, alongside an increase of 0.68% in total owners annually.
Of these 149 institutional investors, 91 increased their holdings in Cullinan Therapeutics, while 41 of them reduced positions, and 17 investors maintained their exposure.
This class of investors increased its holdings in Cullinan Therapeutics to 63.02Mn shares for the 13F-cycle ending December 2025, up by 5.59Mn shares quarter on quarter, and down 2.65Mn shares year over year.
With 8.96Mn shares, Lynx1 Capital Management LP commands the largest institutional position in Cullinan Therapeutics as of December 31, 2025, equating to 12.50% of the company.
Among the most significant buyers of Cullinan Therapeutics during December 2025 were Lynx1 Capital Management LP (3.20Mn), Affinity Asset Advisors, LLC (1.67Mn), BOOTHBAY FUND MANAGEMENT, LLC (1.24Mn), Kynam Capital Management, LP (811.96K), GREAT POINT PARTNERS LLC (634.03K).
Leading sellers of Cullinan Therapeutics stock in December 2025 included DEERFIELD MANAGEMENT COMPANY, L.P. (2.54Mn), CITADEL ADVISORS LLC (1.87Mn), ORBIMED ADVISORS LLC (1.65Mn), DIMENSIONAL FUND ADVISORS LP (335.05K), GOLDMAN SACHS GROUP INC (262.10K).
The top 10 institutional holders of Cullinan Therapeutics for the quarter ending December 2025 included Lynx1 Capital Management LP (8.96Mn), MPM BioImpact LLC (7.65Mn), BVF INC/IL (5.75Mn), BlackRock, Inc. (4.40Mn), VANGUARD GROUP INC (3.30Mn), Kynam Capital Management, LP (3.11Mn), Blue Owl Capital Holdings LP (2.35Mn), STATE STREET CORP (2.20Mn), Affinity Asset Advisors, LLC (1.93Mn), RTW INVESTMENTS, LP (1.71Mn).

149 Institutional Holders

19,551,091 Total Shares Held

Rows:

Download Data

Owner Name	Date	Shares Held	Change (QoQ)	Change (%)	Value (USD)
Lynx1 Capital Management LP	31 Dec, 2025	8,963,500	3,197,410	55.45%	$92,772,225.00
MPM BioImpact LLC	31 Dec, 2025	7,648,268	0	0.00%	$79,159,574.00
BVF INC/IL	31 Dec, 2025	5,750,683	0	0.00%	$59,519,569.00
BlackRock, Inc.	31 Dec, 2025	4,400,296	230,334	5.52%	$45,543,064.00
VANGUARD GROUP INC	31 Dec, 2025	3,298,504	355,179	12.07%	$34,139,516.00
Kynam Capital Management, LP	31 Dec, 2025	3,114,132	811,960	35.27%	$32,231,266.00
Blue Owl Capital Holdings LP	31 Dec, 2025	2,350,972	-160,000	-6.37%	$24,332,560.00
STATE STREET CORP	31 Dec, 2025	2,197,338	520,024	31.00%	$22,742,448.00
Affinity Asset Advisors, LLC	31 Dec, 2025	1,932,106	1,668,289	632.37%	$19,997,297.00
RTW INVESTMENTS, LP	31 Dec, 2025	1,705,960	0	0.00%	$17,656,686.00
VR Adviser, LLC	31 Dec, 2025	1,379,965	0	0.00%	$14,282,638.00
GEODE CAPITAL MANAGEMENT, LLC	31 Dec, 2025	1,302,262	6,942	0.54%	$13,481,334.00
BOOTHBAY FUND MANAGEMENT, LLC	31 Dec, 2025	1,237,043	1,237,043	0.00%	$12,803,395.00
Siren, L.L.C.	31 Dec, 2025	1,193,410	0	0.00%	$12,351,794.00
Nextech Invest, Ltd.	31 Dec, 2025	1,141,145	0	0.00%	$11,810,851.00
DIMENSIONAL FUND ADVISORS LP	31 Dec, 2025	848,769	-335,052	-28.30%	$8,783,184.00
MORGAN STANLEY	31 Dec, 2025	766,934	366,780	91.66%	$7,937,772.00
GOLDMAN SACHS GROUP INC	31 Dec, 2025	721,864	-262,096	-26.64%	$7,471,292.00
GREAT POINT PARTNERS LLC	31 Dec, 2025	634,032	634,032	0.00%	$6,562,231.00
RENAISSANCE TECHNOLOGIES LLC	31 Dec, 2025	631,706	102,298	19.32%	$6,538,157.00

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