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Cullinan Oncology, Inc. (CGEM) institutional ownership

Latest close $17.50 Jul 20, 2026
Market cap$453M 52-week range SectorHealthcare
Funds holding · Q1 2026
153
reported CGEM position changes
Top owners · Q1 2026
No disclosed owners are available.
Institutional activity · Q1 2026
Activity unavailable N/A
94 buyers · 59 sellers

Cullinan Oncology, Inc. (CGEM) price and institutional activity

Dates

Q1 2026

$0 bought by 94 investors
T. Rowe Price AssociatesMarshall Wace, LLP +92 more
$0 sold by 59 investors
Affinity Asset Advisors, LLCBlue Owl Capital Holdings LP +57 more
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Bought Sold Totals per quarter; hover a bar for the names.

Cullinan Oncology, Inc. (CGEM) institutional activity · 153

Investor Type Est. change Change Δ Own Date
T. Rowe Price Associates · Added
Change +2.0M Date Q1 2026
T. Rowe Price Associates Added· Q1 2026 +2.0M Q1 2026
Affinity Asset Advisors, LLC · Reduced
Change −1.2M Date Q1 2026
Affinity Asset Advisors, LLC Reduced· Q1 2026 −1.2M Q1 2026
Marshall Wace, LLP · Added
Change +635K Date Q1 2026
Marshall Wace, LLP Added· Q1 2026 +635K Q1 2026
Point72 Asset Management, L.P. · Added
Change +545K Δ Own +151.4% Date Q1 2026
Point72 Asset Management, L.P. Added· Q1 2026 +545K +151.4% Q1 2026
Blue Owl Capital Holdings LP · Reduced
Change −441K Date Q1 2026
Blue Owl Capital Holdings LP Reduced· Q1 2026 −441K Q1 2026
Soleus Capital Management, L.P. · New
Change +410K Date Q1 2026
Soleus Capital Management, L.P. New· Q1 2026 +410K Q1 2026
Tcg Crossover Management, LLC · New
Change +407K Date Q1 2026
Tcg Crossover Management, LLC New· Q1 2026 +407K Q1 2026
State Street · Added
Change +347K Date Q1 2026
State Street Added· Q1 2026 +347K Q1 2026
Great Point Partners LLC · Reduced
Change −334K Date Q1 2026
Great Point Partners LLC Reduced· Q1 2026 −334K Q1 2026
Renaissance Technologies LLC Reduced· Q1 2026 −308K −48.7% Q1 2026
Goldman Sachs Group Inc · Reduced
Change −266K Date Q1 2026
Goldman Sachs Group Inc Reduced· Q1 2026 −266K Q1 2026
Nuveen, LLC · Added
Change +227K Date Q1 2026
Nuveen, LLC Added· Q1 2026 +227K Q1 2026
Elmind Capital, LP · Added
Change +220K Date Q1 2026
Elmind Capital, LP Added· Q1 2026 +220K Q1 2026
Deutsche Bank AG · Reduced
Change −219K Date Q1 2026
Deutsche Bank AG Reduced· Q1 2026 −219K Q1 2026
Trexquant Investment LP · Reduced
Change −213K Date Q1 2026
Trexquant Investment LP Reduced· Q1 2026 −213K Q1 2026
Data through Q1 2026 · filed Jun 4, 2026
15 of 153

Famous investor activity in Cullinan Oncology, Inc. (CGEM)

Cullinan Oncology, Inc. (CGEM) insider trading

Company insiders, action and economics first; trade and filed dates last.
Dates
Insider Title Type Price Qty Value Owned ΔOwn Trade date Filed date
Michaelson Jennifer · Officer Sell −$143K
Price $17.82 Qty −8K Owned 163K ΔOwn −4.7% Trade date Jul 6, 2026 Filed date Jul 7, 2026
Michaelson Jennifer Officer Sell $17.82 −8K −$143K 163K −4.7% Jul 6, 2026 Jul 7, 2026
Michaelson Jennifer · Officer 2 operations 0
Price $4.30 Owned 113K Trade date Jul 6, 2026 Filed date Jul 7, 2026
Michaelson Jennifer Officer 2 operations $4.30 0 113K Jul 6, 2026 Jul 7, 2026
Sumer Jacquelyn L. · Officer Grant (A) $21K
Price $8.60 Qty 2K Owned 131K ΔOwn +1.9% Trade date Jun 30, 2026 Filed date Jul 2, 2026
Sumer Jacquelyn L. Officer Grant (A) $8.60 2K $21K 131K +1.9% Jun 30, 2026 Jul 2, 2026
Fenton Mary Kay · Officer Grant (A) $13K
Price $8.60 Qty 2K Owned 128K ΔOwn +1.2% Trade date Jun 30, 2026 Filed date Jul 2, 2026
Fenton Mary Kay Officer Grant (A) $8.60 2K $13K 128K +1.2% Jun 30, 2026 Jul 2, 2026
Rosenberg Anthony · Director Grant (A) 25K
Owned 25K Trade date Jun 16, 2026 Filed date Jun 18, 2026
Rosenberg Anthony Director Grant (A) 25K 25K Jun 16, 2026 Jun 18, 2026
Meek David D. · Director Grant (A) 25K
Owned 25K Trade date Jun 16, 2026 Filed date Jun 18, 2026
Meek David D. Director Grant (A) 25K 25K Jun 16, 2026 Jun 18, 2026
Webster Stephen W. · Director Grant (A) 25K
Owned 25K Trade date Jun 16, 2026 Filed date Jun 18, 2026
Webster Stephen W. Director Grant (A) 25K 25K Jun 16, 2026 Jun 18, 2026
Allen Andrew R. · Director Grant (A) 22K
Owned 22K Trade date Jun 16, 2026 Filed date Jun 18, 2026
Allen Andrew R. Director Grant (A) 22K 22K Jun 16, 2026 Jun 18, 2026
Thistle Mary · Director Grant (A) 25K
Owned 25K Trade date Jun 16, 2026 Filed date Jun 18, 2026
Thistle Mary Director Grant (A) 25K 25K Jun 16, 2026 Jun 18, 2026
Doyle Mittie · Director Grant (A) 22K
Owned 22K Trade date Jun 16, 2026 Filed date Jun 18, 2026
Doyle Mittie Director Grant (A) 22K 22K Jun 16, 2026 Jun 18, 2026
Michaelson Jennifer · Officer 2 operations −$117K
Price $14.60–$15.58 Qty −8K Owned 167K Trade date May 5, 2026 Filed date May 6, 2026
Michaelson Jennifer Officer 2 operations $14.60–$15.58 −8K −$117K 167K May 5, 2026 May 6, 2026
Michaelson Jennifer · Officer 2 operations 0
Price $4.30 Owned 117K Trade date May 5, 2026 Filed date May 6, 2026
Michaelson Jennifer Officer 2 operations $4.30 0 117K May 5, 2026 May 6, 2026
Michaelson Jennifer · Officer Sell −$125K
Price $15.68 Qty −8K Owned 171K Trade date Mar 5, 2026 Filed date Mar 9, 2026
Michaelson Jennifer Officer Sell $15.68 −8K −$125K 171K Mar 5, 2026 Mar 9, 2026
Michaelson Jennifer · Officer 2 operations 0
Price $4.30 Owned 121K Trade date Mar 5, 2026 Filed date Mar 9, 2026
Michaelson Jennifer Officer 2 operations $4.30 0 121K Mar 5, 2026 Mar 9, 2026
Michaelson Jennifer · Officer Sell −$25K
Price $14.14 Qty −2K Owned 175K Trade date Feb 25, 2026 Filed date Feb 26, 2026
Michaelson Jennifer Officer Sell $14.14 −2K −$25K 175K Feb 25, 2026 Feb 26, 2026
15 of 53
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Cullinan Oncology, Inc. (CGEM) activist and large shareholders

What are Schedules 13D and 13G?

Dates
Owner/Filer identity Shares reported % of shares outstanding Filing date
Biotechnology Value Fund L P 3.0M
% of shares outstanding 29978200.0% Filing date Nov 14, 2024
Biotechnology Value Fund L P 3.0M 29978200.0% Nov 14, 2024
Franklin Resources Inc 3.3M
% of shares outstanding 7.7% Filing date Feb 6, 2024
Franklin Resources Inc 3.3M 7.7% Feb 6, 2024
Blackrock, Inc. 4.3M
% of shares outstanding 7.5% Filing date Nov 8, 2024
Blackrock, Inc. 4.3M 7.5% Nov 8, 2024
Chi Advisors LLC 3.3M
% of shares outstanding 7.2% Filing date Feb 13, 2023
Chi Advisors LLC 3.3M 7.2% Feb 13, 2023
Biotechnology Value Fund L P 3.6M
% of shares outstanding 5.8% Filing date May 15, 2026
Biotechnology Value Fund L P 3.6M 5.8% May 15, 2026
Flynn James E 3.3M
% of shares outstanding 5.7% Filing date Apr 24, 2024
Flynn James E 3.3M 5.7% Apr 24, 2024
Vanguard Group Inc 3.0M
% of shares outstanding 5.2% Filing date Nov 12, 2024
Vanguard Group Inc 3.0M 5.2% Nov 12, 2024
BlackRock Inc. 2.7M
% of shares outstanding 4.8% Filing date Jun 7, 2024
BlackRock Inc. 2.7M 4.8% Jun 7, 2024
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Cullinan Oncology, Inc. (CGEM) ownership FAQ

Who owns CGEM?

153 reporting institutions disclosed CGEM position changes in the Q1 2026 snapshot.

How is institutional activity calculated?

For each manager, WhoBought compares accepted consecutive 13F share counts. Share change is current shares minus prior shares. Estimated dollar change is that signed share change multiplied by the split-adjusted quarter-mean close. The activity table on this page uses Q1 2026.

What are activist and large shareholder filings?

An investor crossing 5% of a share class generally files Schedule 13D for activist intent or Schedule 13G for a passive position. The technical form names appear here rather than in the activity rows.

Where does this data come from?

Ownership and institutional activity come from SEC Form 13F filings. Insider activity comes from SEC Form 4, and large-shareholder activity from SEC Schedules 13D and 13G. FMP supplies price data only. Company logos use the local verified Parqet cache with one shared fallback.

Why are ownership reports delayed?

Form 13F is a quarterly disclosure and is normally filed after the quarter ends. Every ownership and activity value therefore names its represented period; it is not presented as a live position.

How are missing table values shown?

A muted dash marks a missing table value. It means the filing omitted the value, comparable data is unavailable, or no prior position exists for comparison.