Are insiders buying RNAC stock?

Yes — 3 distinct insiders have bought RNAC (Cartesian Therapeutics, Inc.) on the open market, including 1 cluster buy where two or more insiders bought within a rolling window. The most recent qualifying activity was Dec 8, 2025.

How much RNAC stock have insiders bought?

Insiders have bought a combined $15.7M of RNAC across 28 open-market purchases, based on SEC Form 4 filings.

What is an insider cluster buy in RNAC?

A cluster buy is two or more distinct Cartesian Therapeutics, Inc. insiders — officers, directors, or 10% owners — each buying RNAC on the open market within a rolling window. RNAC has 1 detected cluster buy to date.

Where does this RNAC insider trading data come from?

Every figure is parsed directly from SEC Form 4 filings on EDGAR, and each purchase on this page links back to its original filing document.

RNAC insider buying

1 cluster buy

Cartesian Therapeutics, Inc. · Healthcare

When two or more insiders at Cartesian Therapeutics, Inc. buy RNAC on the open market around the same time, that clustered conviction is one of the highest-signal patterns in SEC filing data. Below is every cluster we've detected in RNAC plus the full record of qualifying open-market buys, each parsed directly from Form 4 filings and linked back to the source on SEC EDGAR.

Clusters

Distinct insiders

Total bought

$15.7M

Market cap

$303.8M

Detected clusters

Aug 12, 2024 – Apr 11, 2025
Detected Apr 11, 2025
2 insiders
Total bought
$15.5M
Market cap
$303.8M

All notable open-market buys in RNAC

Every open-market Form 4 purchase, newest first. Click an insider to see their full buying record across companies.

Date	Insider	Shares	Price	Value	Filing
Dec 4, 2025	BARABE TIMOTHY C Director	30,000	$6.86	$205.8K	SEC ↗
Apr 11, 2025	SPRINGER TIMOTHY Acluster Director, 10% Owner	36,338	$10.77	$391.4K	SEC ↗
Apr 10, 2025	SPRINGER TIMOTHY Acluster Director, 10% Owner	45,144	$10.43	$470.9K	SEC ↗
Apr 9, 2025	SPRINGER TIMOTHY Acluster Director, 10% Owner	41,604	$9.43	$392.3K	SEC ↗
Mar 20, 2025	SPRINGER TIMOTHY Acluster Director, 10% Owner	54,889	$15.59	$855.7K	SEC ↗
Mar 19, 2025	SPRINGER TIMOTHY Acluster Director, 10% Owner	20,234	$14.97	$302.9K	SEC ↗
Mar 18, 2025	SPRINGER TIMOTHY Acluster Director, 10% Owner	14,740	$14.42	$212.6K	SEC ↗
Jan 13, 2025	SPRINGER TIMOTHY Acluster Director, 10% Owner	8,983	$17.78	$159.7K	SEC ↗
Jan 13, 2025	SPRINGER TIMOTHY Acluster Director, 10% Owner	7,962	$16.86	$134.2K	SEC ↗
Dec 20, 2024	SPRINGER TIMOTHY Acluster Director, 10% Owner	21,800	$18.94	$412.9K	SEC ↗
Dec 19, 2024	SPRINGER TIMOTHY Acluster Director, 10% Owner	11,303	$17.39	$196.6K	SEC ↗
Dec 19, 2024	SPRINGER TIMOTHY Acluster Director, 10% Owner	10,529	$18.35	$193.2K	SEC ↗
Nov 18, 2024	SPRINGER TIMOTHY Acluster Director, 10% Owner	38,114	$17.96	$684.5K	SEC ↗
Nov 18, 2024	SPRINGER TIMOTHY Acluster Director, 10% Owner	20,181	$18.42	$371.7K	SEC ↗
Nov 15, 2024	SPRINGER TIMOTHY Acluster Director, 10% Owner	277,246	$17.09	$4.7M	SEC ↗
Nov 14, 2024	SPRINGER TIMOTHY Acluster Director, 10% Owner	74,157	$16.19	$1.2M	SEC ↗
Nov 14, 2024	SPRINGER TIMOTHY Acluster Director, 10% Owner	22,242	$16.97	$377.4K	SEC ↗
Oct 4, 2024	SPRINGER TIMOTHY Acluster Director, 10% Owner	48,880	$22.35	$1.1M	SEC ↗
Oct 4, 2024	SPRINGER TIMOTHY Acluster Director, 10% Owner	16,650	$23.57	$392.4K	SEC ↗
Oct 4, 2024	SPRINGER TIMOTHY Acluster Director, 10% Owner	9,892	$21.35	$211.2K	SEC ↗
Oct 4, 2024	SPRINGER TIMOTHY Acluster Director, 10% Owner	4,879	$23.93	$116.8K	SEC ↗
Oct 3, 2024	SPRINGER TIMOTHY Acluster Director, 10% Owner	50,489	$20.18	$1.0M	SEC ↗
Oct 3, 2024	SPRINGER TIMOTHY Acluster Director, 10% Owner	29,847	$18.25	$544.7K	SEC ↗
Oct 3, 2024	SPRINGER TIMOTHY Acluster Director, 10% Owner	21,278	$21.17	$450.5K	SEC ↗
Oct 3, 2024	SPRINGER TIMOTHY Acluster Director, 10% Owner	10,249	$19.01	$194.8K	SEC ↗

3 earlier buys hidden — sign in free to see the full history.

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RNAC insider buying — FAQ

Are insiders buying RNAC stock?: Yes — 3 distinct insiders have bought RNAC (Cartesian Therapeutics, Inc.) on the open market, including 1 cluster buy where two or more insiders bought within a rolling window. The most recent qualifying activity was Dec 8, 2025.
How much RNAC stock have insiders bought?: Insiders have bought a combined $15.7M of RNAC across 28 open-market purchases, based on SEC Form 4 filings.
What is an insider cluster buy in RNAC?: A cluster buy is two or more distinct Cartesian Therapeutics, Inc. insiders — officers, directors, or 10% owners — each buying RNAC on the open market within a rolling window. RNAC has 1 detected cluster buy to date.
Where does this RNAC insider trading data come from?: Every figure is parsed directly from SEC Form 4 filings on EDGAR, and each purchase on this page links back to its original filing document.

How we track insider buying in RNAC

We continuously poll SEC EDGAR for new Form 4 filings and parse every open-market purchase (transaction code P). A cluster is recorded when two or more distinct insiders — officers, directors, or 10% owners — each buy RNAC within a rolling window. We track clusters at every company size, from micro-caps to mega-caps. Every figure on this page traces back to an official filing; open any row to jump straight to the source document. What counts as a cluster buy?

This page is informational and reflects public filing data. It is not investment advice or a recommendation regarding RNAC.