Trinseo PLC (TSEOF) Insider Trading

Last 12 months

No open-market buying or selling by insiders.

The last open-market buy by an executive or director was in Aug 2025.

Net open-market

0 buys · 0 sales

Under a 10b5-1 plan

—

no sales

Insiders who bought / sold

0 / 0

executives and directors

Last open-market buy

Aug 2025

Aug 14, 2025

Get an email when TSEOF's executives or directors buy, or make a large sale outside a plan.

Trades · last 2 years

Date	Insider	Trade	Shares	Price	Value	Of their stake	Filing
Aug 12, 2025 – Aug 14, 2025	Matthew Farrell Director	Bought 3 parts	100,000	$2.40 average	$240k	67%	Form 4
Mar 12, 2025 – Mar 14, 2025	Johanna Frisch VP AND TREASURER	Bought 3 parts	3,800	$4.13 average	$16k	27%	Form 4

Aug 12, 2025 – Aug 14, 2025
Matthew Farrell
Director · bought 100,000 at avg $2.40
$240k
67% of stake
Mar 12, 2025 – Mar 14, 2025
Johanna Frisch
VP AND TREASURER · bought 3,800 at avg $4.13
$16k
27% of stake

How to read this. Insiders sell for many reasons: taxes, diversifying, a house. Open-market buys are rarer and say more. A 10b5-1 plan is a trading schedule set up months in advance, so those sales were not timed on news. Large holders (funds and 10% owners) are listed under Everything but not counted as insiders. If you own or watch TSEOF, we send a push when an executive buys or makes a large sale outside a plan.

Source: SEC Form 4 filings, filed within two business days of each trade and checked for new ones every hour.

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Spot a number that looks wrong? Check it in TSEOF's SEC filings or

Download this analysis as a PDF (Pro)

Data sourced from SEC EDGAR filings and third-party price providers. Scores, valuations, and metrics are algorithmic estimates. This is not investment advice. See our Terms and Methodology.

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