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Cartesian Therapeutics, Inc. (RNAC) institutional ownership

Latest close $8.13 Jul 21, 2026
Market cap$320M 52-week range SectorHealthcare
Funds holding · Q1 2026
77
reported RNAC position changes
Top owners · Q1 2026
No disclosed owners are available.
Institutional activity · Q1 2026
Activity unavailable N/A
52 buyers · 25 sellers

Cartesian Therapeutics, Inc. (RNAC) price and institutional activity

Dates

Q1 2026

$0 bought by 52 investors
Squarepoint Ops LLCMillennium Management LLC +50 more
$0 sold by 25 investors
FMR LLCBank of America Corp +23 more
Bought Sold Totals per quarter; hover a bar for the names.

Cartesian Therapeutics, Inc. (RNAC) institutional activity · 77

Investor Type Est. change Change Δ Own Date
Squarepoint Ops LLC · Added
Change +2.2M Date Q1 2026
Squarepoint Ops LLC Added· Q1 2026 +2.2M Q1 2026
FMR LLC · Reduced
Change −567K Δ Own −41.5% Date Q1 2026
FMR LLC Reduced· Q1 2026 −567K −41.5% Q1 2026
Millennium Management LLC · Added
Change +120K Date Q1 2026
Millennium Management LLC Added· Q1 2026 +120K Q1 2026
Bank of America Corp · Exited
Change −113K Δ Own −100.0% Date Q1 2026
Bank of America Corp Exited· Q1 2026 −113K −100.0% Q1 2026
AQR Capital Management LLC · New
Change +84K Date Q1 2026
AQR Capital Management LLC New· Q1 2026 +84K Q1 2026
Gsa Capital Partners LLP · Exited
Change −77K Δ Own −100.0% Date Q1 2026
Gsa Capital Partners LLP Exited· Q1 2026 −77K −100.0% Q1 2026
Two Sigma Investments, LP · Added
Change +76K Δ Own +83.3% Date Q1 2026
Two Sigma Investments, LP Added· Q1 2026 +76K +83.3% Q1 2026
Marshall Wace, LLP · Added
Change +73K Date Q1 2026
Marshall Wace, LLP Added· Q1 2026 +73K Q1 2026
UBS Group AG · Added
Change +69K Date Q1 2026
UBS Group AG Added· Q1 2026 +69K Q1 2026
683 Capital Management, LLC · Added
Change +50K Date Q1 2026
683 Capital Management, LLC Added· Q1 2026 +50K Q1 2026
Erste Asset Management GMBH · Reduced
Change −50K Date Q1 2026
Erste Asset Management GMBH Reduced· Q1 2026 −50K Q1 2026
Walleye Capital LLC · Exited
Change −44K Δ Own −100.0% Date Q1 2026
Walleye Capital LLC Exited· Q1 2026 −44K −100.0% Q1 2026
Diametric Capital, LP · New
Change +38K Date Q1 2026
Diametric Capital, LP New· Q1 2026 +38K Q1 2026
Point72 Asset Management, L.P. · Exited
Change −34K Δ Own −100.0% Date Q1 2026
Point72 Asset Management, L.P. Exited· Q1 2026 −34K −100.0% Q1 2026
Goldman Sachs Group Inc · New
Change +31K Date Q1 2026
Goldman Sachs Group Inc New· Q1 2026 +31K Q1 2026
Data through Q1 2026 · filed Jun 2, 2026
15 of 77

Famous investor activity in Cartesian Therapeutics, Inc. (RNAC)

Cartesian Therapeutics, Inc. (RNAC) 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
Hoge Elizabeth · 10% Owner 2 operations 735K
Owned 34K Trade date Apr 2, 2026 Filed date Apr 6, 2026
Hoge Elizabeth 10% Owner 2 operations 735K 34K Apr 2, 2026 Apr 6, 2026
Kalayoglu Murat · 10% Owner 2 operations 735K
Owned 34K Trade date Apr 2, 2026 Filed date Apr 6, 2026
Kalayoglu Murat 10% Owner 2 operations 735K 34K Apr 2, 2026 Apr 6, 2026
Singer Michael · Director Gift (G) -7K
Owned 50K Trade date Mar 13, 2026 Filed date Mar 13, 2026
Singer Michael Director Gift (G) -7K 50K Mar 13, 2026 Mar 13, 2026
Brunn Carsten · Director, Officer Sell −$162K
Price $6.82 Qty −24K Owned 324K Trade date Jan 6, 2026 Filed date Jan 8, 2026
Brunn Carsten Director, Officer Sell $6.82 −24K −$162K 324K Jan 6, 2026 Jan 8, 2026
Miljkovic Milos · Officer Sell −$24K
Price $6.82 Qty −4K Owned 59K Trade date Jan 6, 2026 Filed date Jan 8, 2026
Miljkovic Milos Officer Sell $6.82 −4K −$24K 59K Jan 6, 2026 Jan 8, 2026
Davis Blaine · Officer Sell −$72K
Price $6.82 Qty −11K Owned 121K Trade date Jan 6, 2026 Filed date Jan 8, 2026
Davis Blaine Officer Sell $6.82 −11K −$72K 121K Jan 6, 2026 Jan 8, 2026
Desilva Nishan M. · Director 2 operations 10K
Owned 8K Trade date Jan 2, 2026 Filed date Jan 6, 2026
Desilva Nishan M. Director 2 operations 10K 8K Jan 2, 2026 Jan 6, 2026
Brunn Carsten · Director, Officer 2 operations 559K
Owned 416K Trade date Jan 2, 2026 Filed date Jan 6, 2026
Brunn Carsten Director, Officer 2 operations 559K 416K Jan 2, 2026 Jan 6, 2026
Malik Kemal · Director 2 operations 10K
Owned 8K Trade date Jan 2, 2026 Filed date Jan 6, 2026
Malik Kemal Director 2 operations 10K 8K Jan 2, 2026 Jan 6, 2026
Miljkovic Milos · Officer 2 operations 104K
Owned 77K Trade date Jan 2, 2026 Filed date Jan 6, 2026
Miljkovic Milos Officer 2 operations 104K 77K Jan 2, 2026 Jan 6, 2026
Zenner Patrick J. · Director 2 operations 10K
Owned 8K Trade date Jan 2, 2026 Filed date Jan 6, 2026
Zenner Patrick J. Director 2 operations 10K 8K Jan 2, 2026 Jan 6, 2026
Seymour June Ann · Officer 2 operations 26K
Owned 19K Trade date Jan 2, 2026 Filed date Jan 6, 2026
Seymour June Ann Officer 2 operations 26K 19K Jan 2, 2026 Jan 6, 2026
Davis Blaine · Officer 2 operations 146K
Owned 109K Trade date Jan 2, 2026 Filed date Jan 6, 2026
Davis Blaine Officer 2 operations 146K 109K Jan 2, 2026 Jan 6, 2026
Barabe Timothy C. · Director 2 operations 10K
Owned 8K Trade date Jan 2, 2026 Filed date Jan 6, 2026
Barabe Timothy C. Director 2 operations 10K 8K Jan 2, 2026 Jan 6, 2026
English Emily · Officer 2 operations 95K
Owned 71K Trade date Jan 2, 2026 Filed date Jan 6, 2026
English Emily Officer 2 operations 95K 71K Jan 2, 2026 Jan 6, 2026
15 of 24
15 of 24 Sign in to continue to older insider transactions.

Cartesian Therapeutics, Inc. (RNAC) activist and large shareholders

Dates
Owner/Filer identity Shares reported % of shares outstanding Filing date
Springer Timothy A 9.5M
% of shares outstanding 37.1% Filing date Nov 18, 2024
Springer Timothy A 9.5M 37.1% Nov 18, 2024
Kalayoglu Murat 5.1M
% of shares outstanding 19.9% Filing date Oct 15, 2024
Kalayoglu Murat 5.1M 19.9% Oct 15, 2024
Mangrove Partners
% of shares outstanding 6.0% Filing date Feb 14, 2023
Mangrove Partners 6.0% Feb 14, 2023
JPMorgan Chase & Co. 1.5M
% of shares outstanding 4.8% Filing date Jul 22, 2026
JPMorgan Chase & Co. 1.5M 4.8% Jul 22, 2026
BlackRock Inc. 6.8M
% of shares outstanding 4.5% Filing date May 9, 2022
BlackRock Inc. 6.8M 4.5% May 9, 2022
FMR LLC 800K
% of shares outstanding 3.0% Filing date May 6, 2026
FMR LLC 800K 3.0% May 6, 2026
Artal International S.c.a. 595K
% of shares outstanding 2.8% Filing date Jul 12, 2024
Artal International S.c.a. 595K 2.8% Jul 12, 2024
Biotechnology Value Fund L P 876K
% of shares outstanding 0.8% Filing date Feb 14, 2022
Biotechnology Value Fund L P 876K 0.8% Feb 14, 2022
8 of 8

Cartesian Therapeutics, Inc. (RNAC) ownership FAQ

Who owns RNAC?

77 reporting institutions disclosed RNAC 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.