Trinseo PLC — Director's Dealing 2023

Feb 24, 2023

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Trinseo PLC (TSE)
CIK: 0001519061
Period of Report: 2023-02-22

Reporting Person: Cooney Paula M. (SVP & CHRO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2023-02-22	Ordinary Shares	A	7677	—	Acquired	18154	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2023-02-22	Option to Purchase Ordinary Shares	$24.08	A	17022	Acquired	2032-02-22	Ordinary Shares (17022)	Direct

Footnotes

F1: Represents ordinary shares issuable pursuant to RSU award that will vest in full on the third anniversary of the grant.

F2: The option vests in three equal annual installments beginning on the first anniversary of the grant date.