Are insiders buying CABA stock?

Yes — 8 distinct insiders have bought CABA (Cabaletta Bio, 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 Jan 21, 2026.

How much CABA stock have insiders bought?

Insiders have bought a combined $296.2K of CABA across 8 open-market purchases, based on SEC Form 4 filings.

What is an insider cluster buy in CABA?

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

Where does this CABA 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.

CABA insider buying

1 cluster buy

Cabaletta Bio, Inc. · Healthcare

When two or more insiders at Cabaletta Bio, Inc. buy CABA 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 CABA 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

$296.2K

Market cap

$490.8M

Detected clusters

Jan 21 – Jan 21, 2026
Detected Jan 21, 2026
High conviction8 insiders
Total bought
$296.2K
Market cap
$490.8M

All notable open-market buys in CABA

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
Jan 21, 2026	Nichtberger Stevencluster Director, President & CEO	45,000	$2.24	$100.8K	SEC ↗
Jan 21, 2026	Gavel Stevecluster Chief Commercial Officer	22,170	$2.27	$50.3K	SEC ↗
Jan 21, 2026	Tomasello Shawncluster Director	22,725	$2.21	$50.2K	SEC ↗
Jan 21, 2026	Simon Markcluster Director	11,061	$2.28	$25.2K	SEC ↗
Jan 21, 2026	Binder Gwendolyncluster President, Science & Tech.	11,312	$2.19	$24.8K	SEC ↗
Jan 21, 2026	Chang David J.cluster Chief Medical Officer	8,800	$2.26	$19.9K	SEC ↗
Jan 21, 2026	Gerard Michaelcluster General Counsel	6,600	$2.27	$15.0K	SEC ↗
Jan 21, 2026	Bollard Catherinecluster Director	4,405	$2.27	$10.0K	SEC ↗

More Healthcare stocks with insider cluster buys

All insider buying in Healthcare →

CABA insider buying — FAQ

Are insiders buying CABA stock?: Yes — 8 distinct insiders have bought CABA (Cabaletta Bio, 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 Jan 21, 2026.
How much CABA stock have insiders bought?: Insiders have bought a combined $296.2K of CABA across 8 open-market purchases, based on SEC Form 4 filings.
What is an insider cluster buy in CABA?: A cluster buy is two or more distinct Cabaletta Bio, Inc. insiders — officers, directors, or 10% owners — each buying CABA on the open market within a rolling window. CABA has 1 detected cluster buy to date.
Where does this CABA 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 CABA

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 CABA 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 CABA.