Are insiders buying TSE stock?

Yes — 5 distinct insiders have bought TSE (Trinseo PLC) on the open market, including 1 cluster buy where two or more insiders bought within a rolling window. The most recent qualifying activity was Aug 14, 2025.

How much TSE stock have insiders bought?

Insiders have bought a combined $881.9K of TSE across 8 open-market purchases, based on SEC Form 4 filings.

What is an insider cluster buy in TSE?

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

Where does this TSE 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.

TSE insider buying

1 cluster buy

Trinseo PLC

When two or more insiders at Trinseo PLC buy TSE 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 TSE 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

$881.9K

Market cap

Unknown

Detected clusters

Aug 12 – Aug 19, 2024
Detected Aug 19, 2024
High conviction3 insiders
Total bought
$748.1K
Market cap
Unknown

All notable open-market buys in TSE

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
Aug 14, 2025	FARRELL MATTHEW Director	48,609	$2.43	$118.1K	SEC ↗
Mar 14, 2025	Frisch Johanna VP AND TREASURER	1,500	$4.10	$6.1K	SEC ↗
Mar 13, 2025	Frisch Johanna VP AND TREASURER	1,100	$4.02	$4.4K	SEC ↗
Mar 12, 2025	Frisch Johanna VP AND TREASURER	1,200	$4.28	$5.1K	SEC ↗
Aug 19, 2024	COTE JEFFREY Jcluster Director	50,600	$3.39	$171.5K	SEC ↗
Aug 16, 2024	COTE JEFFREY Jcluster Director	100,000	$2.81	$281.0K	SEC ↗
Aug 12, 2024	Chaclas Angelo N.cluster SVP, CLO, CCO & CORP. SEC.	75,000	$2.57	$192.8K	SEC ↗
Aug 12, 2024	BOZICH FRANK Acluster Director, CEO AND PRESIDENT	40,000	$2.57	$102.8K	SEC ↗

TSE insider buying — FAQ

Are insiders buying TSE stock?: Yes — 5 distinct insiders have bought TSE (Trinseo PLC) on the open market, including 1 cluster buy where two or more insiders bought within a rolling window. The most recent qualifying activity was Aug 14, 2025.
How much TSE stock have insiders bought?: Insiders have bought a combined $881.9K of TSE across 8 open-market purchases, based on SEC Form 4 filings.
What is an insider cluster buy in TSE?: A cluster buy is two or more distinct Trinseo PLC insiders — officers, directors, or 10% owners — each buying TSE on the open market within a rolling window. TSE has 1 detected cluster buy to date.
Where does this TSE 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 TSE

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 TSE 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 TSE.