RNAC

Cartesian Therapeutics, Inc.

Insider trading activity for Cartesian Therapeutics, Inc., straight from SEC Form 4 filings. Net figures below count open-market buys and sales only — grants, option exercises and tax withholding are excluded because they are compensation, not decisions to trade.

Past 3 months

net buying

Bought(0 · 0 insiders): $0
Sold(0 · 0 insiders): $0

Past 6 months

net buying

Bought(0 · 0 insiders): $0
Sold(0 · 0 insiders): $0

Past 12 months

-$52.9K

net selling

Bought(1 · 1 insiders): $205.8K
Sold(3 · 3 insiders): $258.7K

Transaction history

The 55 most recent Form 4 transactions.

Open in screener →

Insider transactions, newest first: date, security, transaction type, size and a link to the filing each row came from.
Date	Insider	Role	Type	Shares	Price	Value	Δ Own	Filing
Apr 2	Hoge Elizabeth	10% Owner	MEXER◆	22,740.03	—	—	—	Open the original filing on SEC.gov
Apr 2	Hoge Elizabeth	10% Owner	MEXER	758,001	—	—	+16.6%	Open the original filing on SEC.gov
Apr 2	Kalayoglu Murat	10% Owner	MEXER◆	22,740.03	—	—	—	Open the original filing on SEC.gov
Apr 2	Kalayoglu Murat	10% Owner	MEXER	758,001	—	—	+16.6%	Open the original filing on SEC.gov
Mar 13	Singer Michael	Director	GGIFT	6,555	—	—	-11.7%	Open the original filing on SEC.gov
Jan 6	Miljkovic Milos	Chief Medical Officer	SSELL	3,573	$6.82	$24.4K	-5.7%	Open the original filing on SEC.gov
Jan 6	Davis Blaine	Chief Financial Officer	SSELL	10,591	$6.82	$72.2K	-8.0%	Open the original filing on SEC.gov
Jan 6	Brunn Carsten	President and CEO	SSELL	23,766	$6.82	$162.1K	-6.8%	Open the original filing on SEC.gov
Jan 2	DeSilva Nishan M	Director	AGRANT◆	7,800	—	—	—	Open the original filing on SEC.gov
Jan 2	DeSilva Nishan M	Director	AGRANT	2,600	—	—	+29.7%	Open the original filing on SEC.gov
Jan 2	Malik Kemal	Director	AGRANT◆	7,800	—	—	—	Open the original filing on SEC.gov
Jan 2	Malik Kemal	Director	AGRANT	2,600	—	—	+30.5%	Open the original filing on SEC.gov
Jan 2	Miljkovic Milos	Chief Medical Officer	AGRANT◆	77,000	—	—	—	Open the original filing on SEC.gov
Jan 2	Miljkovic Milos	Chief Medical Officer	AGRANT	27,000	—	—	+76.3%	Open the original filing on SEC.gov
Jan 2	Zenner Patrick J	Director	AGRANT◆	7,800	—	—	—	Open the original filing on SEC.gov
Jan 2	Zenner Patrick J	Director	AGRANT	2,600	—	—	+25.1%	Open the original filing on SEC.gov
Jan 2	Seymour June Ann	Chief Accounting Officer	AGRANT◆	19,000	—	—	—	Open the original filing on SEC.gov
Jan 2	Seymour June Ann	Chief Accounting Officer	AGRANT	6,500	—	—	—	Open the original filing on SEC.gov
Jan 2	Davis Blaine	Chief Financial Officer	AGRANT◆	109,000	—	—	—	Open the original filing on SEC.gov
Jan 2	Davis Blaine	Chief Financial Officer	AGRANT	37,000	—	—	+39.0%	Open the original filing on SEC.gov
Jan 2	English Emily	Chief Operations Officer	AGRANT◆	71,000	—	—	—	Open the original filing on SEC.gov
Jan 2	English Emily	Chief Operations Officer	AGRANT	24,000	—	—	+34.2%	Open the original filing on SEC.gov
Jan 2	Singer Michael	Director	AGRANT◆	7,800	—	—	—	Open the original filing on SEC.gov
Jan 2	Singer Michael	Director	AGRANT	2,600	—	—	+4.9%	Open the original filing on SEC.gov
Jan 2	Springer Timothy A	Director, 10% Owner	AGRANT◆	7,800	—	—	—	Open the original filing on SEC.gov
Jan 2	Springer Timothy A	Director, 10% Owner	AGRANT	2,600	—	—	+<0.1%	Open the original filing on SEC.gov
Jan 2	Kalayoglu Murat	Director, 10% Owner	AGRANT◆	7,800	—	—	—	Open the original filing on SEC.gov
Jan 2	Kalayoglu Murat	Director, 10% Owner	AGRANT	2,600	—	—	+0.5%	Open the original filing on SEC.gov
Jan 2	Brunn Carsten	President and CEO	AGRANT◆	415,700	—	—	—	Open the original filing on SEC.gov
Jan 2	Brunn Carsten	President and CEO	AGRANT	143,200	—	—	+70.2%	Open the original filing on SEC.gov
Jan 2	Barabe Timothy C	Director	AGRANT◆	7,800	—	—	—	Open the original filing on SEC.gov
Jan 2	Barabe Timothy C	Director	AGRANT	2,600	—	—	+4.8%	Open the original filing on SEC.gov
Dec 30, 2025	English Emily	Chief Operations Officer	MEXER◆	7,500	—	—	—	Open the original filing on SEC.gov
Dec 30, 2025	English Emily	Chief Operations Officer	MEXER	7,500	$3.30	$24.8K	+12.0%	Open the original filing on SEC.gov
Dec 16, 2025	Bot Adrian Ion	Director	AGRANT◆	17,200	—	—	—	Open the original filing on SEC.gov
Dec 16, 2025	Bot Adrian Ion	Director	AGRANT	5,800	—	—	—	Open the original filing on SEC.gov
Dec 4, 2025	Barabe Timothy C	Director	PBUY★	30,000	$6.86	$205.8K	+123.1%	Open the original filing on SEC.gov
Nov 28, 2025	English Emily	Chief Operations Officer	MEXER◆	7,500	—	—	—	Open the original filing on SEC.gov
Nov 28, 2025	English Emily	Chief Operations Officer	MEXER	7,500	$3.30	$24.8K	+13.6%	Open the original filing on SEC.gov
Nov 18, 2025	Singer Michael	Director	GGIFT	20,000	—	—	-27.2%	Open the original filing on SEC.gov
Oct 27, 2025	Seymour June Ann	Chief Accounting Officer	AGRANT◆	50,000	—	—	—	Open the original filing on SEC.gov
May 12, 2025	English Emily	Chief Operations Officer	MEXER◆	7,500	—	—	—	Open the original filing on SEC.gov
May 12, 2025	English Emily	Chief Operations Officer	MEXER	7,500	$3.30	$24.8K	+15.7%	Open the original filing on SEC.gov
Apr 15, 2025	English Emily	Chief Operations Officer	MEXER◆	7,500	—	—	—	Open the original filing on SEC.gov
Apr 15, 2025	English Emily	Chief Operations Officer	MEXER	7,500	$3.30	$24.8K	+18.6%	Open the original filing on SEC.gov
Apr 11, 2025	Springer Timothy A	Director, 10% Owner	PBUY	36,338	$10.77	$391.5K	+5.9%	Open the original filing on SEC.gov
Apr 11, 2025	Springer Timothy A	Director, 10% Owner	PBUY	6,412	$10.77	$69.1K	+<0.1%	Open the original filing on SEC.gov
Apr 10, 2025	Springer Timothy A	Director, 10% Owner	PBUY	3,451	$10.92	$37.7K	+0.6%	Open the original filing on SEC.gov
Apr 10, 2025	Springer Timothy A	Director, 10% Owner	PBUY	45,144	$10.43	$471.1K	+7.9%	Open the original filing on SEC.gov
Apr 10, 2025	Springer Timothy A	Director, 10% Owner	PBUY	609	$10.92	$6.7K	+<0.1%	Open the original filing on SEC.gov
Apr 10, 2025	Springer Timothy A	Director, 10% Owner	PBUY	7,966	$10.43	$83.1K	+<0.1%	Open the original filing on SEC.gov
Apr 9, 2025	Springer Timothy A	Director, 10% Owner	PBUY	178	$9.95	$1.8K	+<0.1%	Open the original filing on SEC.gov
Apr 9, 2025	Springer Timothy A	Director, 10% Owner	PBUY▲	41,604	$9.43	$392.2K	+7.8%	Open the original filing on SEC.gov
Apr 9, 2025	Springer Timothy A	Director, 10% Owner	PBUY	31	$9.95	$308	0.0%	Open the original filing on SEC.gov
Apr 9, 2025	Springer Timothy A	Director, 10% Owner	PBUY	7,342	$9.43	$69.2K	+<0.1%	Open the original filing on SEC.gov

MEXER◆—

Hoge Elizabeth · 10% OwnerApr 2

22,740.03 sh

MEXER—

Hoge Elizabeth · 10% OwnerApr 2

758,001 sh · +16.6% own

MEXER◆—

Kalayoglu Murat · 10% OwnerApr 2

22,740.03 sh

MEXER—

Kalayoglu Murat · 10% OwnerApr 2

758,001 sh · +16.6% own

GGIFT—

Singer Michael · DirectorMar 13

6,555 sh · -11.7% own

SSELL$24.4K

Miljkovic Milos · Chief Medical…Jan 6

3,573 sh @ $6.82 · -5.7% own

SSELL$72.2K

Davis Blaine · Chief Financial…Jan 6

10,591 sh @ $6.82 · -8.0% own

SSELL$162.1K

Brunn Carsten · President and CEOJan 6

23,766 sh @ $6.82 · -6.8% own

AGRANT◆—

DeSilva Nishan M · DirectorJan 2

7,800 sh

AGRANT—

DeSilva Nishan M · DirectorJan 2

2,600 sh · +29.7% own

AGRANT◆—

Malik Kemal · DirectorJan 2

7,800 sh

AGRANT—

Malik Kemal · DirectorJan 2

2,600 sh · +30.5% own

AGRANT◆—

Miljkovic Milos · Chief Medical…Jan 2

77,000 sh

AGRANT—

Miljkovic Milos · Chief Medical…Jan 2

27,000 sh · +76.3% own

AGRANT◆—

Zenner Patrick J · DirectorJan 2

7,800 sh

AGRANT—

Zenner Patrick J · DirectorJan 2

2,600 sh · +25.1% own

AGRANT◆—

Seymour June Ann · Chief Accounting…Jan 2

19,000 sh

AGRANT—

Seymour June Ann · Chief Accounting…Jan 2

6,500 sh

AGRANT◆—

Davis Blaine · Chief Financial…Jan 2

109,000 sh

AGRANT—

Davis Blaine · Chief Financial…Jan 2

37,000 sh · +39.0% own

AGRANT◆—

English Emily · Chief Operations…Jan 2

71,000 sh

AGRANT—

English Emily · Chief Operations…Jan 2

24,000 sh · +34.2% own

AGRANT◆—

Singer Michael · DirectorJan 2

7,800 sh

AGRANT—

Singer Michael · DirectorJan 2

2,600 sh · +4.9% own

AGRANT◆—

Springer Timothy A · Director, 10%…Jan 2

7,800 sh

AGRANT—

Springer Timothy A · Director, 10%…Jan 2

2,600 sh · +<0.1% own

AGRANT◆—

Kalayoglu Murat · Director, 10%…Jan 2

7,800 sh

AGRANT—

Kalayoglu Murat · Director, 10%…Jan 2

2,600 sh · +0.5% own

AGRANT◆—

Brunn Carsten · President and CEOJan 2

415,700 sh

AGRANT—

Brunn Carsten · President and CEOJan 2

143,200 sh · +70.2% own

AGRANT◆—

Barabe Timothy C · DirectorJan 2

7,800 sh

AGRANT—

Barabe Timothy C · DirectorJan 2

2,600 sh · +4.8% own

MEXER◆—

English Emily · Chief Operations…Dec 30, 2025

7,500 sh

MEXER$24.8K

English Emily · Chief Operations…Dec 30, 2025

7,500 sh @ $3.30 · +12.0% own

AGRANT◆—

Bot Adrian Ion · DirectorDec 16, 2025

17,200 sh

AGRANT—

Bot Adrian Ion · DirectorDec 16, 2025

5,800 sh

PBUY★$205.8K

Barabe Timothy C · DirectorDec 4, 2025

30,000 sh @ $6.86 · +123.1% own

MEXER◆—

English Emily · Chief Operations…Nov 28, 2025

7,500 sh

MEXER$24.8K

English Emily · Chief Operations…Nov 28, 2025

7,500 sh @ $3.30 · +13.6% own

GGIFT—

Singer Michael · DirectorNov 18, 2025

20,000 sh · -27.2% own

AGRANT◆—

Seymour June Ann · Chief Accounting…Oct 27, 2025

50,000 sh

MEXER◆—

English Emily · Chief Operations…May 12, 2025

7,500 sh

MEXER$24.8K

English Emily · Chief Operations…May 12, 2025

7,500 sh @ $3.30 · +15.7% own

MEXER◆—

English Emily · Chief Operations…Apr 15, 2025

7,500 sh

MEXER$24.8K

English Emily · Chief Operations…Apr 15, 2025

7,500 sh @ $3.30 · +18.6% own

PBUY$391.5K

Springer Timothy A · Director, 10%…Apr 11, 2025

36,338 sh @ $10.77 · +5.9% own

PBUY$69.1K

Springer Timothy A · Director, 10%…Apr 11, 2025

6,412 sh @ $10.77 · +<0.1% own

PBUY$37.7K

Springer Timothy A · Director, 10%…Apr 10, 2025

3,451 sh @ $10.92 · +0.6% own

PBUY$471.1K

Springer Timothy A · Director, 10%…Apr 10, 2025

45,144 sh @ $10.43 · +7.9% own

PBUY$6.7K

Springer Timothy A · Director, 10%…Apr 10, 2025

609 sh @ $10.92 · +<0.1% own

PBUY$83.1K

Springer Timothy A · Director, 10%…Apr 10, 2025

7,966 sh @ $10.43 · +<0.1% own

PBUY$1.8K

Springer Timothy A · Director, 10%…Apr 9, 2025

178 sh @ $9.95 · +<0.1% own

PBUY▲$392.2K

Springer Timothy A · Director, 10%…Apr 9, 2025

41,604 sh @ $9.43 · +7.8% own

PBUY$308

Springer Timothy A · Director, 10%…Apr 9, 2025

31 sh @ $9.95 · 0.0% own

PBUY$69.2K

Springer Timothy A · Director, 10%…Apr 9, 2025

7,342 sh @ $9.43 · +<0.1% own

Filing record

How quickly insiders here report their trades. Section 16 allows two business days from the transaction.

All 26 filings we hold were filed within the two-business-day deadline.

Counted in business days from the transaction date, or the deemed execution date where the filing reports one, excluding weekends and federal holidays. How this is measured · All late filings

Insiders at this company

Everyone who has filed a Form 4 for this issuer.

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