Pierre Marie De Leener Trinseo PLC (TSE) insider trading activity

Pierre Marie De Leener is of Trinseo PLC. Currently has a direct ownership of 36,174 shares of TSE, which is worth approximately $83,200. The most recent transaction as insider was on Jun 21, 2025, when has been sold 20,001 shares (Ordinary Shares) at a price of $3.73 per share, resulting in proceeds of $74,603. This information was disclosed in a Form 4 filing with the Securities and Exchange Commission (SEC).

Shares Held (Direct Ownership) 36.2K

35.6% 3M change

35.6% 12M change

Total Value Held $83,200

Pierre-Marie De Leener Transaction History

Date	Transaction	Value	Shares Traded	Shares Held
Jun 21 2025	SELL Payment of exercise price or tax liability	$74,603 $3.73 p/Share	20,001 Reduced 35.6%	36,174 Ordinary Shares
Jun 21 2024	BUY Grant, award, or other acquisition	-	41,009 Added 42.2%	56,175 Ordinary Shares
Jun 14 2024	SELL Payment of exercise price or tax liability	$12,527 $2.84 p/Share	4,411 Reduced 22.53%	15,166 Ordinary Shares
Jun 14 2023	SELL Payment of exercise price or tax liability	$13,747 $14.38 p/Share	956 Reduced 4.52%	20,188 Ordinary Shares
Jun 14 2023	BUY Grant, award, or other acquisition	-	9,041 Added 29.95%	21,144 Ordinary Shares
Jun 17 2022	SELL Payment of exercise price or tax liability	$40,612 $37.43 p/Share	1,085 Reduced 8.23%	12,103 Ordinary Shares
Jun 14 2022	BUY Grant, award, or other acquisition	-	3,183 Added 19.44%	13,188 Ordinary Shares
Jun 17 2021	BUY Grant, award, or other acquisition	-	2,260 Added 18.43%	10,005 Ordinary Shares
Jun 11 2021	SELL Open market or private sale	$607,035 $65.0 p/Share	9,339 Reduced 54.67%	7,745 Ordinary Shares
Jun 09 2021	SELL Payment of exercise price or tax liability	$64,286 $64.87 p/Share	991 Reduced 5.48%	17,084 Ordinary Shares

PDL

Pierre Marie De Leener

Berwyn, PA

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