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

+3.2%

avg +3.2%

Median 60d

-13.8%

avg -13.8%

Median 90d

-29.1%

avg -29.1%

Median 180d

-28.8%

avg -28.8%

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

Activist filings

1 SCHEDULE 13D/A · 1 SCHEDULE · 14 SC

Distinct filers

multi-activist cluster

Insiders (365d)

0 buys · 0 sales

Latest short DTC

12.37

as of 2026-05-29

Held by elite portfolio managers

1 holder · $244K

Point72 Asset Mgmt

Filed	Form	Filer	Stake	Shares
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 →

Date	Insider	Role	Type	Shares	Price	Value
2026-04-02	Hoge Elizabeth	10%+	Option exercise	758,001	—	—
2026-04-02	Kalayoglu Murat	10%+	Option exercise	758,001	—	—

Settlement	Short Interest	Days to Cover	% Δ vs prior
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%
2026-01-15	2,128,743	13.62	-8.9%
2025-12-31	2,337,271	10.34	-0.3%
2025-12-15	2,343,662	8.46	+12.6%

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