Han Hendriks - Oct 3, 2025 Form 4 Insider Report for Trinseo PLC (TSE)

Role
SVP, CHIEF TECHNOLOGY OFFICER
Signature
/s/ Angelo Chaclas, Attorney-in-Fact
Stock symbol
TSE
Transactions as of
Oct 3, 2025
Transactions value $
-$4,816
Form type
4
Date filed
10/7/2025, 04:34 PM
Previous filing
Mar 3, 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Hendriks Han SVP, CHIEF TECHNOLOGY OFFICER C/O TRINSEO PLC, 440 EAST SWEDESFORD ROAD, SUITE 301, WAYNE /s/ Angelo Chaclas, Attorney-in-Fact 2025-10-07 0001946359

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction TSE Ordinary Shares Tax liability -$4.82K -2.07K -2.25% $2.33 89.7K Oct 3, 2025 Direct F1
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Shares withheld by the Company to pay taxes due following the vesting of restricted stock units.