TSE

Trinseo PLC

Insider trading activity for Trinseo PLC, straight from SEC Form 4 filings. Net figures below count open-market buys and sales only — grants, option exercises and tax withholding are excluded because they are compensation, not decisions to trade.

Past 3 months

net buying

Bought(0 · 0 insiders): $0
Sold(0 · 0 insiders): $0

Past 6 months

net buying

Bought(0 · 0 insiders): $0
Sold(0 · 0 insiders): $0

Past 12 months

net buying

Bought(0 · 0 insiders): $0
Sold(0 · 0 insiders): $0

Transaction history

The 60 most recent Form 4 transactions.

Open in screener →

Insider transactions, newest first: date, security, transaction type, size and a link to the filing each row came from.
Date	Insider	Role	Type	Shares	Price	Value	Δ Own	Filing
May 12	Steinmetz Henri	Director	JOTHER	42,484	—	—	-44.3%	Open the original filing on SEC.gov
May 12	Lin Sandra Beach	Director	JOTHER	42,484	—	—	-48.7%	Open the original filing on SEC.gov
May 12	Johnson KLynne	Director	JOTHER	42,484	—	—	-46.7%	Open the original filing on SEC.gov
May 12	Farrell Matthew	Director	JOTHER	42,484	—	—	-17.0%	Open the original filing on SEC.gov
May 12	Desmond Jeanmarie F.	Director	JOTHER	42,484	—	—	-47.7%	Open the original filing on SEC.gov
May 12	Cote Jeffrey J	Director	JOTHER	42,484	—	—	-48.2%	Open the original filing on SEC.gov
May 12	Brifo Victoria	Director	JOTHER	42,484	—	—	-51.0%	Open the original filing on SEC.gov
May 12	Alvarado Joseph	Director	JOTHER	42,484	—	—	-44.9%	Open the original filing on SEC.gov
Feb 27	Yang Arthas Bing	SVP, Latex Binders	FTAX	2,548	$0.23	$586	-4.9%	Open the original filing on SEC.gov
Feb 27	van Kessel Bregje	SVP, Corporate Finance…	FTAX	6,064	$0.23	$1.4K	-5.8%	Open the original filing on SEC.gov
Feb 27	Stasse David Phillip	EVP and CFO	FTAX	10,366	$0.23	$2.4K	-3.9%	Open the original filing on SEC.gov
Feb 27	Schewe Rainer	SVP, Supply Chain & Mfg…	FTAX	4,028	$0.23	$926	-3.8%	Open the original filing on SEC.gov
Feb 27	Reverberi Francesca	SVP, EM and Polymer…	FTAX	1,385	$0.23	$319	-0.9%	Open the original filing on SEC.gov
Feb 27	Hendriks Han	SVP, Chief Technology…	FTAX	7,707	$0.23	$1.8K	-9.5%	Open the original filing on SEC.gov
Feb 27	Greene Roger	VP, Global Controller &…	FTAX	2,517	$0.23	$579	-5.3%	Open the original filing on SEC.gov
Feb 27	Cooney Paula M.	SVP, CHRO	FTAX	7,670	$0.23	$1.8K	-6.1%	Open the original filing on SEC.gov
Feb 27	Chaclas Angelo N.	SVP, CLO, CCO & Corp.…	FTAX	7,607	$0.23	$1.7K	-2.7%	Open the original filing on SEC.gov
Feb 27	Bozich Frank A	CEO and President	FTAX	23,680	$0.23	$5.4K	-3.4%	Open the original filing on SEC.gov
Feb 22	Yang Arthas Bing	SVP, Latex Binders	FTAX	547	$0.3276	$179	-1.0%	Open the original filing on SEC.gov
Feb 22	van Kessel Bregje	SVP, Corporate Finance…	FTAX	1,335	$0.3276	$437	-1.3%	Open the original filing on SEC.gov
Feb 22	Stasse David Phillip	EVP and CFO	FTAX	9,671	$0.3276	$3.2K	-3.5%	Open the original filing on SEC.gov
Feb 22	Schewe Rainer	SVP, Supply Chain & Mfg…	FTAX	1,206	$0.3276	$395	-1.1%	Open the original filing on SEC.gov
Feb 22	Reverberi Francesca	SVP, EM and Polymer…	FTAX	333	$0.3276	$109	-0.2%	Open the original filing on SEC.gov
Feb 22	Hendriks Han	SVP, Chief Technology…	FTAX	2,291	$0.3276	$751	-2.8%	Open the original filing on SEC.gov
Feb 22	Cooney Paula M.	SVP, CHRO	FTAX	2,684	$0.3276	$879	-2.1%	Open the original filing on SEC.gov
Feb 22	Chaclas Angelo N.	SVP, CLO, CCO & Corp.…	FTAX	7,098	$0.3276	$2.3K	-2.5%	Open the original filing on SEC.gov
Feb 22	Bozich Frank A	CEO and President	FTAX	32,602	$0.3276	$10.7K	-4.5%	Open the original filing on SEC.gov
Feb 21	Yang Arthas Bing	SVP, Latex Binders	FTAX	1,898	$0.3276	$622	-3.5%	Open the original filing on SEC.gov
Feb 21	van Kessel Bregje	SVP, Corporate Finance…	FTAX	5,963	$0.3276	$2K	-5.3%	Open the original filing on SEC.gov
Feb 21	Stasse David Phillip	EVP and CFO	FTAX	5,028	$0.3276	$1.6K	-1.8%	Open the original filing on SEC.gov
Feb 21	Schewe Rainer	SVP, Supply Chain & Mfg…	FTAX	3,907	$0.3276	$1.3K	-3.5%	Open the original filing on SEC.gov
Feb 21	Reverberi Francesca	SVP, EM and Polymer…	FTAX	1,163	$0.3276	$381	-0.7%	Open the original filing on SEC.gov
Feb 21	Hendriks Han	SVP, Chief Technology…	FTAX	6,331	$0.3276	$2.1K	-7.1%	Open the original filing on SEC.gov
Feb 21	Greene Roger	VP, Global Controller &…	FTAX	2,238	$0.3276	$733	-4.5%	Open the original filing on SEC.gov
Feb 21	Cooney Paula M.	SVP, CHRO	FTAX	7,440	$0.3276	$2.4K	-5.5%	Open the original filing on SEC.gov
Feb 21	Chaclas Angelo N.	SVP, CLO, CCO & Corp.…	FTAX	3,690	$0.3276	$1.2K	-1.3%	Open the original filing on SEC.gov
Oct 3, 2025	Hendriks Han	SVP, Chief Technology…	FTAX	2,067	$2.33	$4.8K	-2.3%	Open the original filing on SEC.gov
Sep 30, 2025	Frisch Johanna	VP and Treasurer	FTAX	2,194	$2.35	$5.2K	-12.1%	Open the original filing on SEC.gov
Sep 25, 2025	Greene Roger	VP, Global Controller &…	FTAX	1,617	$2.57	$4.2K	-3.1%	Open the original filing on SEC.gov
Aug 14, 2025	Farrell Matthew	Director	PBUY	48,609	$2.43	$118.1K	+24.1%	Open the original filing on SEC.gov
Aug 13, 2025	Farrell Matthew	Director	PBUY	26,391	$2.45	$64.7K	+15.1%	Open the original filing on SEC.gov
Aug 12, 2025	Farrell Matthew	Director	PBUY	25,000	$2.29	$57.3K	+16.6%	Open the original filing on SEC.gov
Jun 25, 2025	Steinmetz Henri	Director	AGRANT	42,484	—	—	+79.5%	Open the original filing on SEC.gov
Jun 25, 2025	Lin Sandra Beach	Director	AGRANT	42,484	—	—	+94.9%	Open the original filing on SEC.gov
Jun 25, 2025	Johnson KLynne	Director	AGRANT	42,484	—	—	+87.7%	Open the original filing on SEC.gov
Jun 25, 2025	Farrell Matthew	Director	AGRANT	42,484	—	—	+39.4%	Open the original filing on SEC.gov
Jun 25, 2025	Desmond Jeanmarie F.	Director	AGRANT	42,484	—	—	+91.3%	Open the original filing on SEC.gov
Jun 25, 2025	Cote Jeffrey J	Director	AGRANT	42,484	—	—	+93.0%	Open the original filing on SEC.gov
Jun 25, 2025	Brifo Victoria	Director	AGRANT	42,484	—	—	+104.3%	Open the original filing on SEC.gov
Jun 25, 2025	Alvarado Joseph	Director	AGRANT	42,484	—	—	+81.4%	Open the original filing on SEC.gov
Jun 21, 2025	Tomkins Mark E	Director	FTAX	10,105	$3.73	$37.7K	-21.6%	Open the original filing on SEC.gov
Jun 21, 2025	Steinmetz Henri	Director	FTAX	20,001	$3.73	$74.6K	-27.2%	Open the original filing on SEC.gov
Jun 21, 2025	Lin Sandra Beach	Director	FTAX	10,310	$3.73	$38.5K	-18.7%	Open the original filing on SEC.gov
Jun 21, 2025	Johnson KLynne	Director	FTAX	10,474	$3.73	$39.1K	-17.8%	Open the original filing on SEC.gov
Jun 21, 2025	Farrell Matthew	Director	FTAX	9,576	$3.73	$35.7K	-8.2%	Open the original filing on SEC.gov
Jun 21, 2025	Desmond Jeanmarie F.	Director	FTAX	10,343	$3.73	$38.6K	-18.2%	Open the original filing on SEC.gov
Jun 21, 2025	De Leener Pierre-Marie	Director	FTAX	20,001	$3.73	$74.6K	-35.6%	Open the original filing on SEC.gov
Jun 21, 2025	Brifo Victoria	Director	FTAX	9,576	$3.73	$35.7K	-19.0%	Open the original filing on SEC.gov
Jun 21, 2025	Alvarado Joseph	Director	FTAX	10,327	$3.73	$38.5K	-16.5%	Open the original filing on SEC.gov
Jun 21, 2025	Cote Jeffrey J	Director	FTAX↺	10,310	$3.73	$38.5K	-18.4%	Open the original filing on SEC.gov

JOTHER—

Steinmetz Henri · DirectorMay 12

42,484 sh · -44.3% own

JOTHER—

Lin Sandra Beach · DirectorMay 12

42,484 sh · -48.7% own

JOTHER—

Johnson KLynne · DirectorMay 12

42,484 sh · -46.7% own

JOTHER—

Farrell Matthew · DirectorMay 12

42,484 sh · -17.0% own

JOTHER—

Desmond Jeanmarie F. · DirectorMay 12

42,484 sh · -47.7% own

JOTHER—

Cote Jeffrey J · DirectorMay 12

42,484 sh · -48.2% own

JOTHER—

Brifo Victoria · DirectorMay 12

42,484 sh · -51.0% own

JOTHER—

Alvarado Joseph · DirectorMay 12

42,484 sh · -44.9% own

FTAX$586

Yang Arthas Bing · SVP, Latex BindersFeb 27

2,548 sh @ $0.23 · -4.9% own

FTAX$1.4K

van Kessel Bregje · SVP, Corporate…Feb 27

6,064 sh @ $0.23 · -5.8% own

FTAX$2.4K

Stasse David Phillip · EVP and CFOFeb 27

10,366 sh @ $0.23 · -3.9% own

FTAX$926

Schewe Rainer · SVP, Supply Chain…Feb 27

4,028 sh @ $0.23 · -3.8% own

FTAX$319

Reverberi Francesca · SVP, EM and…Feb 27

1,385 sh @ $0.23 · -0.9% own

FTAX$1.8K

Hendriks Han · SVP, Chief Technol…Feb 27

7,707 sh @ $0.23 · -9.5% own

FTAX$579

Greene Roger · VP, Global Control…Feb 27

2,517 sh @ $0.23 · -5.3% own

FTAX$1.8K

Cooney Paula M. · SVP, CHROFeb 27

7,670 sh @ $0.23 · -6.1% own

FTAX$1.7K

Chaclas Angelo N. · SVP, CLO, CCO &…Feb 27

7,607 sh @ $0.23 · -2.7% own

FTAX$5.4K

Bozich Frank A · CEO and PresidentFeb 27

23,680 sh @ $0.23 · -3.4% own

FTAX$179

Yang Arthas Bing · SVP, Latex BindersFeb 22

547 sh @ $0.3276 · -1.0% own

FTAX$437

van Kessel Bregje · SVP, Corporate…Feb 22

1,335 sh @ $0.3276 · -1.3% own

FTAX$3.2K

Stasse David Phillip · EVP and CFOFeb 22

9,671 sh @ $0.3276 · -3.5% own

FTAX$395

Schewe Rainer · SVP, Supply Chain…Feb 22

1,206 sh @ $0.3276 · -1.1% own

FTAX$109

Reverberi Francesca · SVP, EM and…Feb 22

333 sh @ $0.3276 · -0.2% own

FTAX$751

Hendriks Han · SVP, Chief Technol…Feb 22

2,291 sh @ $0.3276 · -2.8% own

FTAX$879

Cooney Paula M. · SVP, CHROFeb 22

2,684 sh @ $0.3276 · -2.1% own

FTAX$2.3K

Chaclas Angelo N. · SVP, CLO, CCO &…Feb 22

7,098 sh @ $0.3276 · -2.5% own

FTAX$10.7K

Bozich Frank A · CEO and PresidentFeb 22

32,602 sh @ $0.3276 · -4.5% own

FTAX$622

Yang Arthas Bing · SVP, Latex BindersFeb 21

1,898 sh @ $0.3276 · -3.5% own

FTAX$2K

van Kessel Bregje · SVP, Corporate…Feb 21

5,963 sh @ $0.3276 · -5.3% own

FTAX$1.6K

Stasse David Phillip · EVP and CFOFeb 21

5,028 sh @ $0.3276 · -1.8% own

FTAX$1.3K

Schewe Rainer · SVP, Supply Chain…Feb 21

3,907 sh @ $0.3276 · -3.5% own

FTAX$381

Reverberi Francesca · SVP, EM and…Feb 21

1,163 sh @ $0.3276 · -0.7% own

FTAX$2.1K

Hendriks Han · SVP, Chief Technol…Feb 21

6,331 sh @ $0.3276 · -7.1% own

FTAX$733

Greene Roger · VP, Global Control…Feb 21

2,238 sh @ $0.3276 · -4.5% own

FTAX$2.4K

Cooney Paula M. · SVP, CHROFeb 21

7,440 sh @ $0.3276 · -5.5% own

FTAX$1.2K

Chaclas Angelo N. · SVP, CLO, CCO &…Feb 21

3,690 sh @ $0.3276 · -1.3% own

FTAX$4.8K

Hendriks Han · SVP, Chief Technol…Oct 3, 2025

2,067 sh @ $2.33 · -2.3% own

FTAX$5.2K

Frisch Johanna · VP and TreasurerSep 30, 2025

2,194 sh @ $2.35 · -12.1% own

FTAX$4.2K

Greene Roger · VP, Global Control…Sep 25, 2025

1,617 sh @ $2.57 · -3.1% own

PBUY$118.1K

Farrell Matthew · DirectorAug 14, 2025

48,609 sh @ $2.43 · +24.1% own

PBUY$64.7K

Farrell Matthew · DirectorAug 13, 2025

26,391 sh @ $2.45 · +15.1% own

PBUY$57.3K

Farrell Matthew · DirectorAug 12, 2025

25,000 sh @ $2.29 · +16.6% own

AGRANT—

Steinmetz Henri · DirectorJun 25, 2025

42,484 sh · +79.5% own

AGRANT—

Lin Sandra Beach · DirectorJun 25, 2025

42,484 sh · +94.9% own

AGRANT—

Johnson KLynne · DirectorJun 25, 2025

42,484 sh · +87.7% own

AGRANT—

Farrell Matthew · DirectorJun 25, 2025

42,484 sh · +39.4% own

AGRANT—

Desmond Jeanmarie F. · DirectorJun 25, 2025

42,484 sh · +91.3% own

AGRANT—

Cote Jeffrey J · DirectorJun 25, 2025

42,484 sh · +93.0% own

AGRANT—

Brifo Victoria · DirectorJun 25, 2025

42,484 sh · +104.3% own

AGRANT—

Alvarado Joseph · DirectorJun 25, 2025

42,484 sh · +81.4% own

FTAX$37.7K

Tomkins Mark E · DirectorJun 21, 2025

10,105 sh @ $3.73 · -21.6% own

FTAX$74.6K

Steinmetz Henri · DirectorJun 21, 2025

20,001 sh @ $3.73 · -27.2% own

FTAX$38.5K

Lin Sandra Beach · DirectorJun 21, 2025

10,310 sh @ $3.73 · -18.7% own

FTAX$39.1K

Johnson KLynne · DirectorJun 21, 2025

10,474 sh @ $3.73 · -17.8% own

FTAX$35.7K

Farrell Matthew · DirectorJun 21, 2025

9,576 sh @ $3.73 · -8.2% own

FTAX$38.6K

Desmond Jeanmarie F. · DirectorJun 21, 2025

10,343 sh @ $3.73 · -18.2% own

FTAX$74.6K

De Leener Pierre-Marie · DirectorJun 21, 2025

20,001 sh @ $3.73 · -35.6% own

FTAX$35.7K

Brifo Victoria · DirectorJun 21, 2025

9,576 sh @ $3.73 · -19.0% own

FTAX$38.5K

Alvarado Joseph · DirectorJun 21, 2025

10,327 sh @ $3.73 · -16.5% own

FTAX↺$38.5K

Cote Jeffrey J · DirectorJun 21, 2025

10,310 sh @ $3.73 · -18.4% own

Filing record

How quickly insiders here report their trades. Section 16 allows two business days from the transaction.

All 49 filings we hold were filed within the two-business-day deadline.

Counted in business days from the transaction date, or the deemed execution date where the filing reports one, excluding weekends and federal holidays. How this is measured · All late filings

Insiders at this company

Everyone who has filed a Form 4 for this issuer.

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