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ISSUER PROFILE · CIK 0001453687 · CUSIP 816212104

Cartesian Therapeutics, Inc.RNAC

16 13D/G filings 4 distinct filers 2 insider transactions (365d)

Post-Filing Returns · across 2 activist filings on this issuer

Median 30d
+33.3%
avg +33.3%
Median 60d
+24.8%
avg +24.8%
Median 90d
+17.2%
avg +17.2%
Median 180d
-28.8%
avg -28.8%

Returns measured from each activist filing's date_of_event, split + dividend adjusted via Yahoo Finance.

Cross-Reference Snapshot

Activist filings
16
1 SCHEDULE 13D/A · 1 SCHEDULE · 14 SC
Distinct filers
4
multi-activist cluster
Insiders (365d)
2
0 buys · 0 sales
Latest short DTC
12.30
as of 2026-07-15

Institutional Consensus · 2025-12-31

Held by elite portfolio managers
1 holder · $244K
Point72 Asset Mgmt

13D/G Filings Timeline · 16 total

FiledFormFilerStakeSharesIntent
2026-04-02 SCHEDULE 13D/A Kalayoglu Murat 19.90% 5,833,971 view →
2025-01-15 SCHEDULE SPRINGER TIMOTHY A 36.90% 9,555,394 view →
2024-10-15 SC Kalayoglu Murat view →
2024-07-05 SC SPRINGER TIMOTHY A view →
2024-04-12 SC SPRINGER TIMOTHY A view →
2021-12-27 SC SPRINGER TIMOTHY A view →
2021-05-27 SC SPRINGER TIMOTHY A view →
2020-10-23 SC SPRINGER TIMOTHY A view →
2020-10-15 SC SPRINGER TIMOTHY A view →
2020-02-05 SC ORBIMED ADVISORS LLC view →
2020-01-02 SC SPRINGER TIMOTHY A view →
2019-12-17 SC SPRINGER TIMOTHY A view →
2019-11-13 SC ORBIMED ADVISORS LLC view →
2019-02-04 SC Polaris Venture Partners V, L.P. view →
2018-05-03 SC Polaris Venture Partners V, L.P. view →
2018-01-26 SC ORBIMED ADVISORS LLC view →

Form 4 Insider Transactions · last 365d

DateInsiderRoleTypeSharesPriceValue
2026-04-02 Hoge Elizabeth 10%+ Option exercise 758,001
2026-04-02 Kalayoglu Murat 10%+ Option exercise 758,001

FINRA Short Interest History

SettlementShort InterestDays to Cover% Δ vs prior
2026-07-15 1,925,634 12.30 +2.1%
2026-06-30 1,886,695 4.91 -2.1%
2026-06-15 1,927,010 3.24 -15.9%
2026-05-29 2,291,824 12.37 +3.4%
2026-05-15 2,216,090 11.87 +2.2%
2026-04-30 2,169,081 12.79 -2.0%
2026-04-15 2,214,144 14.01 +2.0%
2026-03-31 2,170,494 14.66 +2.4%
2026-03-13 2,119,136 4.77 -1.4%
2026-02-27 2,148,586 15.63 -3.0%
2026-02-13 2,215,393 22.20 +2.5%
2026-01-30 2,161,341 24.97 +1.5%

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