FRANK A. BOZICH - 02 Feb 2022 Form 4 Insider Report for Trinseo PLC (TSE)

Role: CEO and President, Director
Signature: /s/ Angelo Chaclas, attorney-in-fact
Issuer symbol: TSE
Transactions as of: 02 Feb 2022
Net transactions value: -$620,118
Form type: 4
Filing time: 04 Feb 2022, 13:40:43 UTC
Previous filing: 02 Feb 2022
Next filing: 18 Feb 2022
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	TSE	Ordinary Shares	Options Exercise	$509,255	+20,957	+18%	$24.30	135,353	02 Feb 2022	Direct
transaction	TSE	Ordinary Shares	Sale	$1,129,373	-20,957	-15%	$53.89^*	114,396	02 Feb 2022	Direct	F1, F2

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	TSE	Option to Purchase Ordinary Shares	Options Exercise	$0	-20,957	-20%	$0.000000	83,829	02 Feb 2022	Ordinary Shares	20,957	$24.30	Direct	F3

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	A portion of the proceeds from the sale were used to pay the exercise price of stock options pursuant to a broker-assisted cashless exercise, and applicable withholding taxes. The exercise and sale were made pursuant to a preexisting 10b5-1 plan executed in May 2021.
F2	Price reflects the weighted average sale price for the sale transactions made on the date reported above. Sale prices ranged from $53.29 to $55.02. The reporting person will provide, upon request by the Staff, the Company, or a security holder of the Company, full information regarding the number of shares purchased or sold at each separate price.
F3	The option vests in three equal annual installments beginning on the first anniversary of the grant date.