Angelo N. Chaclas

Date	Company	Security	Transaction	Code	Indirect	10b5-1	$Price	#Shares	$Value	#Remaining
12 Aug 24	TSE Trinseo	Ordinary Shares	Buy	Acquire P	No	No	2.57	75,000	192.75 k	207,007
21 Feb 24	TSE Trinseo	Ordinary Shares	Grant	Acquire A	No	No	0	44,041	0.00	132,007
21 Feb 24	TSE Trinseo	Options to Purchase Ordinary Shares Ordinary Shares	Grant	Acquire A	No	No	4.4	77,538	341.17 k	77,538
19 Feb 24	TSE Trinseo	Ordinary Shares	Payment of exercise	Dispose F	No	No	4.78	153	731.34	87,966
19 Feb 24	TSE Trinseo	Ordinary Shares	Grant	Acquire A	No	No	0	466	0.00	88,119
17 Feb 24	TSE Trinseo	Ordinary Shares	Payment of exercise	Dispose F	No	No	4.78	855	4.09 k	87,653
12 Sep 23	TSE Trinseo	Ordinary Shares	Buy	Acquire P	No	No	8.07	20,000	161.40 k	88,508

Data from 3, 4 and 5 filings. Values as filed, not updated for current price.