Cartesian Therapeutics, Inc. (RNAC) Insider Trading & SEC Filings

Updated Jul 16, 2026 · Last SEC filing 2026-04-06

Cartesian Therapeutics, Inc. (RNAC) — no SEC Form 4 insider filings recorded in the last 90 days. 4 Form 8-K material event filings were reported by RNAC in the last 90 days. 2 Form 144 notices of proposed sale were filed for RNAC stock. InsiderAlpha tracks every RNAC SEC filing — Form 4, Form 144, and 8-K — in real time, including Rule 10b5-1 plan detection.

About Cartesian Therapeutics, Inc. (RNAC)

SEC CIK	0001453687

90-Day SEC Filing Activity

Form 8-K filings (90d)	4
Form 144 notices (90d)	2
Latest Form 4 filing	2026-04-06

Recent RNAC Insider Transactions (Form 4)

Date	Insider	Role	Transaction	Shares	Price	Value	Filing
2026-04-02	Hoge Elizabeth	10% Owner	M — Option exercise	758.0K	—	—	SEC
2026-04-02	Kalayoglu Murat	10% Owner	M — Option exercise	758.0K	—	—	SEC
2026-03-13	Singer Michael	Director	G — Bona-fide gift	6.6K	$0.00	—	SEC
2025-04-11	SPRINGER TIMOTHY A	Director	P — Open-market purchase	36.3K	$10.77	$391K	SEC
2025-04-11	SPRINGER TIMOTHY A	Director	P — Open-market purchase	6.4K	$10.77	$69K	SEC
2025-04-10	SPRINGER TIMOTHY A	Director	P — Open-market purchase	45.1K	$10.43	$471K	SEC
2025-04-10	SPRINGER TIMOTHY A	Director	P — Open-market purchase	609	$10.92	$7K	SEC
2025-04-10	SPRINGER TIMOTHY A	Director	P — Open-market purchase	8.0K	$10.43	$83K	SEC
2025-04-10	SPRINGER TIMOTHY A	Director	P — Open-market purchase	3.5K	$10.92	$38K	SEC
2025-04-09	SPRINGER TIMOTHY A	Director	P — Open-market purchase	41.6K	$9.43	$392K	SEC
2025-04-09	SPRINGER TIMOTHY A	Director	P — Open-market purchase	31	$9.95	$308	SEC
2025-04-09	SPRINGER TIMOTHY A	Director	P — Open-market purchase	178	$9.95	$2K	SEC
2025-04-09	SPRINGER TIMOTHY A	Director	P — Open-market purchase	7.3K	$9.43	$69K	SEC
2024-12-26	English Emily	SVP, Head of Manufacturing	M — Option exercise	7.7K	$3.30	$25K	SEC
2024-12-26	Singer Michael	Director	G — Bona-fide gift	20.0K	$0.00	—	SEC

All transactions sourced from SEC EDGAR Form 4 filings for Cartesian Therapeutics, Inc. (RNAC). Updated in real time as new filings are submitted to the SEC.

Recent RNAC Form 8-K Material Events

2026-06-17 — Item 5.07 [SEC]
2026-06-09 — Item 7.01, 9.01 [SEC]
2026-05-26 — Item 1.01, 2.03, 3.02, 5.02, 7.01, 9.01 [SEC]
2026-04-30 — Item 2.02, 9.01 [SEC]
2026-03-30 — Item 5.02 · Leadership · neutral [SEC]
Dr. Murat Kalayoglu resigned from Cartesian Therapeutics' Board of Directors effective March 31, 2026, to pursue other opportunities. He had served on the Board since 2023 and chaired the Science and Technology Committee. The resignation was not due to any disagreement with the C

Recent RNAC Form 144 Notices of Proposed Sale

2026-06-09 — — [SEC]
2026-06-02 — — [SEC]

Form 144 must be filed before insiders sell restricted or control stock above SEC thresholds. A cluster of Form 144 notices often precedes a wave of insider distribution.

Recent Insider Filings

2026-04-06 — Hoge Elizabeth (10% Owner)
2026-04-06 — Kalayoglu Murat (10% Owner)
2026-03-13 — Singer Michael (Director)
2025-12-02 — English Emily (Chief Operations Officer)
2025-11-19 — Singer Michael (Director)

Form 4 Transaction Code Reference

SEC Form 4 transactions are reported with a one-letter code indicating the type of transaction. Common codes you'll see in RNAC insider filings:

P	Open-market purchase by the insider
S	Open-market sale by the insider
A	Grant, award, or other acquisition from the issuer
M	Exercise or conversion of derivative security (e.g. options)
F	Payment of exercise price or tax liability via share withholding
G	Bona-fide gift of securities
D	Disposition to the issuer (e.g. share buyback participation)
J	Other acquisition or disposition
X	Exercise of in-the-money or at-the-money derivative security
C	Conversion of derivative security
V	Transaction voluntarily reported earlier than required

RNAC Insider Trading — FAQ

What is the latest insider trade for RNAC?: Cartesian Therapeutics, Inc. (RNAC) had 0 insider filings in the last 90 days, with the most recent on 2026-04-06. InsiderAlpha tracks every Form 4, 10-K, 10-Q, and 8-K filing in real time.
How many insiders are buying RNAC stock?: 0 insider purchases of RNAC were filed in the last 90 days.
How many insiders are selling RNAC stock?: 0 insider sales of RNAC were filed in the last 90 days.
Where can I see RNAC SEC filings (Form 4, 10-K, 10-Q, 8-K)?: InsiderAlpha aggregates every RNAC SEC filing — Form 4 insider transactions, 10-K and 10-Q quarterly reports, and 8-K material event disclosures — in one timeline.

Learn More

Open the live RNAC dashboard on InsiderAlpha for real-time alerts, charting, and full historical filing search.