AG˹ٷ

STOCK TITAN

[Form 4] Trinseo PLC Insider Trading Activity

Filing Impact
(Low)
Filing Sentiment
(Negative)
Form Type
4
Rhea-AI Filing Summary

Trinseo PLC (TSE) � Form 4 insider filing

Director Pierre-Marie De Leener reported a single transaction dated 06/21/2025 coded “F�, indicating shares were withheld by the company to satisfy tax obligations upon the vesting of previously granted restricted stock units. A total of 20,001 ordinary shares were disposed of at an implied price of $3.73 per share (� $74.6 thousand in value). Following the tax-related withholding, the director’s direct beneficial ownership stands at 36,174 shares.

The filing does not reflect an open-market sale or purchase initiated by the insider; therefore, it carries limited informational weight regarding insider sentiment. No derivative securities were involved, and there is no indication of a 10b5-1 trading plan.

Trinseo PLC (TSE) � Comunicazione interna Form 4

Il direttore Pierre-Marie De Leener ha segnalato una singola operazione datata 21/06/2025 contrassegnata con il codice “F�, che indica che azioni sono state trattenute dalla società per adempiere agli obblighi fiscali legati al consolidamento di unità azionarie vincolate precedentemente concesse. In totale sono state cedute 20.001 azioni ordinarie a un prezzo implicito di 3,73 $ per azione (circa 74,6 mila dollari in valore). Dopo questa trattenuta fiscale, la posizione diretta di proprietà effettiva del direttore è di 36.174 azioni.

La comunicazione non rappresenta una vendita o un acquisto sul mercato aperto avviato dall’insider; pertanto, ha un valore informativo limitato riguardo al sentiment interno. Non sono stati coinvolti strumenti derivati e non vi è indicazione di un piano di negoziazione 10b5-1.

Trinseo PLC (TSE) � Presentación interna Formulario 4

El director Pierre-Marie De Leener reportó una única transacción con fecha 21/06/2025 codificada como “F�, lo que indica que la empresa retuvo acciones para cumplir con obligaciones fiscales tras la consolidación de unidades restringidas previamente otorgadas. En total, se dispuso de 20,001 acciones ordinarias a un precio implícito de $3.73 por acción (aproximadamente $74.6 mil en valor). Tras esta retención fiscal, la propiedad directa efectiva del director es de 36,174 acciones.

La presentación no refleja una venta o compra en el mercado abierto iniciada por el insider; por lo tanto, tiene un valor informativo limitado respecto al sentimiento interno. No se involucraron valores derivados y no hay indicios de un plan de negociación 10b5-1.

Trinseo PLC (TSE) � 내부� 보고� Form 4

이사 Pierre-Marie De Leener� 2025� 6� 21일자� “F� 코드가 붙은 단일 거래� 보고했으�, 이는 회사가 이전� 부여된 제한 주식 단위가 확정되면� 세금 의무� 충족하기 위해 주식� 원천징수했음� 의미합니�. � 20,001 보통�가 주당 $3.73� 암시 가격으� 처분되었으며 (� $74,600 상당) 세금 원천징수 �, 이사� 직접 실질 소유 주식은 36,174�입니�.

� 보고� 내부자가 시작� 공개 시장 매매� 반영하지 않으므� 내부� 심리� 대� 정보� 가치는 제한적입니다. 파생 증권은 포함되지 않았으며, 10b5-1 거래 계획� 없습니다.

Trinseo PLC (TSE) � Déclaration interne Formulaire 4

Le directeur Pierre-Marie De Leener a déclaré une seule transaction datée du 21/06/2025, codée « F », indiquant que des actions ont été retenues par la société pour satisfaire les obligations fiscales lors de l’acquisition définitive d’unités d’actions restreintes précédemment accordées. Un total de 20 001 actions ordinaires a été cédé à un prix implicite de 3,73 $ par action (soit environ 74,6 mille dollars en valeur). Après cette retenue fiscale, la détention directe effective du directeur s’élève à 36 174 actions.

La déclaration ne reflète pas une vente ou un achat sur le marché ouvert initié par l’initié ; elle a donc une portée informative limitée quant au sentiment des initiés. Aucun titre dérivé n’a été impliqué et il n’y a aucune indication d’un plan de trading 10b5-1.

Trinseo PLC (TSE) � Form 4 Insider-Meldung

Direktor Pierre-Marie De Leener meldete eine einzelne Transaktion vom 21.06.2025 mit dem Code „F�, was bedeutet, dass Aktien vom Unternehmen einbehalten wurden, um Steuerverpflichtungen beim Vesting zuvor gewährter Restricted Stock Units zu erfüllen. Insgesamt wurden 20.001 Stammaktien zu einem impliziten Preis von 3,73 $ pro Aktie veräußert (� 74,6 Tausend Dollar Wert). Nach der steuerbedingten Einbehaltung beträgt das direkte wirtschaftliche Eigentum des Direktors 36.174 Aktien.

Die Meldung stellt keinen offenen Marktverkauf oder -kauf durch den Insider dar und hat daher nur begrenzte Aussagekraft bezüglich der Insider-Stimmung. Es waren keine Derivate beteiligt und es gibt keinen Hinweis auf einen 10b5-1-Handelsplan.

Positive
  • Director retains 36,174 shares after the transaction, maintaining equity alignment with shareholders.
Negative
  • 20,001 shares disposed (withheld for taxes), slightly reducing insider ownership.

Insights

TL;DR: Tax-withholding disposition; director still holds 36k shares—neutral signal, minimal market impact.

The “F� code confirms this was an involuntary share disposition tied to RSU vesting taxes, not an elective sale. While 20,001 shares were surrendered, the director retains a meaningful equity stake, suggesting continued alignment with shareholder interests. The modest dollar value (under $0.1 million) and absence of additional transactions make the event non-material for valuation models or governance assessments. Accordingly, I view the disclosure as routine housekeeping with neutral market implications.

Trinseo PLC (TSE) � Comunicazione interna Form 4

Il direttore Pierre-Marie De Leener ha segnalato una singola operazione datata 21/06/2025 contrassegnata con il codice “F�, che indica che azioni sono state trattenute dalla società per adempiere agli obblighi fiscali legati al consolidamento di unità azionarie vincolate precedentemente concesse. In totale sono state cedute 20.001 azioni ordinarie a un prezzo implicito di 3,73 $ per azione (circa 74,6 mila dollari in valore). Dopo questa trattenuta fiscale, la posizione diretta di proprietà effettiva del direttore è di 36.174 azioni.

La comunicazione non rappresenta una vendita o un acquisto sul mercato aperto avviato dall’insider; pertanto, ha un valore informativo limitato riguardo al sentiment interno. Non sono stati coinvolti strumenti derivati e non vi è indicazione di un piano di negoziazione 10b5-1.

Trinseo PLC (TSE) � Presentación interna Formulario 4

El director Pierre-Marie De Leener reportó una única transacción con fecha 21/06/2025 codificada como “F�, lo que indica que la empresa retuvo acciones para cumplir con obligaciones fiscales tras la consolidación de unidades restringidas previamente otorgadas. En total, se dispuso de 20,001 acciones ordinarias a un precio implícito de $3.73 por acción (aproximadamente $74.6 mil en valor). Tras esta retención fiscal, la propiedad directa efectiva del director es de 36,174 acciones.

La presentación no refleja una venta o compra en el mercado abierto iniciada por el insider; por lo tanto, tiene un valor informativo limitado respecto al sentimiento interno. No se involucraron valores derivados y no hay indicios de un plan de negociación 10b5-1.

Trinseo PLC (TSE) � 내부� 보고� Form 4

이사 Pierre-Marie De Leener� 2025� 6� 21일자� “F� 코드가 붙은 단일 거래� 보고했으�, 이는 회사가 이전� 부여된 제한 주식 단위가 확정되면� 세금 의무� 충족하기 위해 주식� 원천징수했음� 의미합니�. � 20,001 보통�가 주당 $3.73� 암시 가격으� 처분되었으며 (� $74,600 상당) 세금 원천징수 �, 이사� 직접 실질 소유 주식은 36,174�입니�.

� 보고� 내부자가 시작� 공개 시장 매매� 반영하지 않으므� 내부� 심리� 대� 정보� 가치는 제한적입니다. 파생 증권은 포함되지 않았으며, 10b5-1 거래 계획� 없습니다.

Trinseo PLC (TSE) � Déclaration interne Formulaire 4

Le directeur Pierre-Marie De Leener a déclaré une seule transaction datée du 21/06/2025, codée « F », indiquant que des actions ont été retenues par la société pour satisfaire les obligations fiscales lors de l’acquisition définitive d’unités d’actions restreintes précédemment accordées. Un total de 20 001 actions ordinaires a été cédé à un prix implicite de 3,73 $ par action (soit environ 74,6 mille dollars en valeur). Après cette retenue fiscale, la détention directe effective du directeur s’élève à 36 174 actions.

La déclaration ne reflète pas une vente ou un achat sur le marché ouvert initié par l’initié ; elle a donc une portée informative limitée quant au sentiment des initiés. Aucun titre dérivé n’a été impliqué et il n’y a aucune indication d’un plan de trading 10b5-1.

Trinseo PLC (TSE) � Form 4 Insider-Meldung

Direktor Pierre-Marie De Leener meldete eine einzelne Transaktion vom 21.06.2025 mit dem Code „F�, was bedeutet, dass Aktien vom Unternehmen einbehalten wurden, um Steuerverpflichtungen beim Vesting zuvor gewährter Restricted Stock Units zu erfüllen. Insgesamt wurden 20.001 Stammaktien zu einem impliziten Preis von 3,73 $ pro Aktie veräußert (� 74,6 Tausend Dollar Wert). Nach der steuerbedingten Einbehaltung beträgt das direkte wirtschaftliche Eigentum des Direktors 36.174 Aktien.

Die Meldung stellt keinen offenen Marktverkauf oder -kauf durch den Insider dar und hat daher nur begrenzte Aussagekraft bezüglich der Insider-Stimmung. Es waren keine Derivate beteiligt und es gibt keinen Hinweis auf einen 10b5-1-Handelsplan.

SEC Form 4
FORM 4 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number: 3235-0287
Estimated average burden
hours per response: 0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
De Leener Pierre-Marie

(Last) (First) (Middle)
C/O TRINSEO PLC
440 EAST SWEDESFORD ROAD, SUITE 301

(Street)
WAYNE PA 19087

(City) (State) (Zip)
2. Issuer Name and Ticker or Trading Symbol
Trinseo PLC [ TSE ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
X Director 10% Owner
Officer (give title below) Other (specify below)
3. Date of Earliest Transaction (Month/Day/Year)
06/21/2025
4. If Amendment, Date of Original Filed (Month/Day/Year)
6. Individual or Joint/Group Filing (Check Applicable Line)
X Form filed by One Reporting Person
Form filed by More than One Reporting Person
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V Amount (A) or (D) Price
Ordinary Shares 06/21/2025 F 20,001(1) D $3.73 36,174 D
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year) 7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Explanation of Responses:
1. Shares withheld by the Company to pay taxes due following the vesting of previously granted restricted stock units.
/s/ Angelo Chaclas, Attorney-in-Fact 06/24/2025
** Signature of Reporting Person Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

How many Trinseo (TSE) shares did Director Pierre-Marie De Leener dispose of?

The filing shows 20,001 ordinary shares were withheld to cover taxes.

What was the reason for the share disposal reported in Trinseo's Form 4?

The shares were withheld by the company to pay taxes on vested restricted stock units (transaction code “F�).

What is the director's remaining shareholding in Trinseo after the transaction?

After the withholding, the director owns 36,174 shares directly.

Was a 10b5-1 trading plan involved in this Form 4 filing for TSE?

No; the filing does not indicate that the transaction was made under a 10b5-1 plan.

Does this Form 4 suggest a change in insider sentiment toward Trinseo stock?

Likely not, as the transaction was tax-related rather than a discretionary sale or purchase.
Trinseo Plc

NYSE:TSE

TSE Rankings

TSE Latest News

TSE Latest SEC Filings

TSE Stock Data

114.44M
33.41M
6.06%
71.76%
3.84%
Specialty Chemicals
Plastic Materials, Synth Resins & Nonvulcan Elastomers
United States
WAYNE