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 (Ticker: TSE) � Form 4 filing dated 24 June 2025

The filing discloses an insider transaction by Director Jeanmarie F. Desmond. On 21 June 2025, the company withheld 10,343 ordinary shares to satisfy taxes triggered by the vesting of previously granted restricted stock units, a transaction coded �F� (tax-related disposition). The shares were valued at $3.73 per share. Following the withholding, Desmond’s direct ownership stands at 46,552 ordinary shares.

No derivative securities were reported and there were no open-market purchases or sales. The transaction is administrative in nature and does not represent an active trading decision by the director.

Trinseo PLC (Ticker: TSE) � Comunicazione Form 4 del 24 giugno 2025

La comunicazione rivela un'operazione interna effettuata dal Direttore Jeanmarie F. Desmond. In data 21 giugno 2025, la società ha trattenuto 10.343 azioni ordinarie per coprire le imposte derivanti dal consolidamento di unità azionarie vincolate assegnate in precedenza, un’operazione classificata come �F� (disposizione fiscale). Il valore attribuito a ciascuna azione è stato di $3,73. Dopo questa trattenuta, la proprietà diretta di Desmond ammonta a 46.552 azioni ordinarie.

Non sono stati segnalati titoli derivati né acquisti o vendite sul mercato aperto. L’operazione ha natura amministrativa e non rappresenta una decisione di trading attiva da parte del direttore.

Trinseo PLC (Ticker: TSE) � Presentación Formulario 4 fechada el 24 de junio de 2025

La presentación revela una transacción interna realizada por el Director Jeanmarie F. Desmond. El 21 de junio de 2025, la empresa retuvo 10,343 acciones ordinarias para cubrir impuestos generados por la consolidación de unidades restringidas de acciones previamente otorgadas, una operación codificada como �F� (disposición relacionada con impuestos). Las acciones se valoraron en $3.73 por acción. Tras la retención, la propiedad directa de Desmond asciende a 46,552 acciones ordinarias.

No se reportaron valores derivados ni compras o ventas en el mercado abierto. La transacción es de naturaleza administrativa y no representa una decisión activa de trading por parte del director.

Trinseo PLC (티커: TSE) � 2025� 6� 24일자 Form 4 신고

해당 신고� 이사 Jeanmarie F. Desmond� 내부� 거래� 공개합니�. 2025� 6� 21�, 회사� 이전� 부여된 제한 주식 단위� 권리 확정으로 발생� 세금� 충당하기 위해 10,343� 보통�� 원천징수했으�, � 거래� �F� (세금 관� 처분)� 분류되었습니�. 주당 가치는 $3.73였습니�. 원천징수 � Desmond� 직접 보유 주식 수는 46,552� 보통�입니�.

파생 증권은 보고되지 않았으며, 공개 시장에서� 매매� 없었습니�. � 거래� 행정� 성격이며 이사� 적극적인 거래 결정� 아닙니다.

Trinseo PLC (Ticker : TSE) � Déclaration Formulaire 4 datée du 24 juin 2025

La déclaration révèle une transaction d’initié réalisée par le Directeur Jeanmarie F. Desmond. Le 21 juin 2025, la société a retenu 10 343 actions ordinaires pour couvrir les impôts générés par l’acquisition de unités d’actions restreintes précédemment attribuées, une opération codée « F » (cession liée aux impôts). Les actions ont été évaluées à 3,73 $ chacune. Après cette retenue, la propriété directe de Desmond s’élève à 46 552 actions ordinaires.

Aucun titre dérivé n’a été déclaré et il n’y a eu ni achats ni ventes sur le marché ouvert. Cette opération est de nature administrative et ne constitue pas une décision active de trading du directeur.

Trinseo PLC (Ticker: TSE) � Form 4 Meldung vom 24. Juni 2025

Die Meldung offenbart eine Insider-Transaktion von Direktor Jeanmarie F. Desmond. Am 21. Juni 2025 behielt das Unternehmen 10.343 Stammaktien ein, um Steuern zu begleichen, die durch die Zuteilung zuvor gewährter Restricted Stock Units entstanden sind, eine Transaktion mit dem Code �F� (steuerbedingte Veräußerung). Der Wert je Aktie lag bei 3,73 $. Nach der Einbehaltung beträgt Desmonds direkte Beteiligung 46.552 Stammaktien.

Es wurden keine Derivate gemeldet und es gab keine Käufe oder Verkäufe am offenen Markt. Die Transaktion ist administrativer Natur und stellt keine aktive Handelsentscheidung des Direktors dar.

Positive
  • None.
Negative
  • Director’s share count fell by 10,343 shares (�18% of prior holdings) through a disposition, modestly lowering insider ownership.

Insights

TL;DR: Automatic tax-withholding of 10,343 shares; minimal market signal.

The “F� code indicates a tax-related disposition, not an elective sale. The size—roughly 18% of the director’s pre-transaction holdings—reduces insider ownership but is routine following RSU vesting. No cash proceeds go to the insider, and no derivatives were exercised. Given the small absolute value (�$38k), the filing is unlikely to influence valuation or liquidity for Trinseo. I classify the impact as neutral.

TL;DR: Compliance event; insider still holds 46,552 shares.

Form 4 shows proper Section 16 reporting and Rule 10b5-1 checkbox unchecked, suggesting this was not executed under a pre-arranged plan. The director retains a meaningful equity stake, which maintains alignment with shareholders. No red flags regarding governance or potential conflicts emerge from this routine tax settlement.

Trinseo PLC (Ticker: TSE) � Comunicazione Form 4 del 24 giugno 2025

La comunicazione rivela un'operazione interna effettuata dal Direttore Jeanmarie F. Desmond. In data 21 giugno 2025, la società ha trattenuto 10.343 azioni ordinarie per coprire le imposte derivanti dal consolidamento di unità azionarie vincolate assegnate in precedenza, un’operazione classificata come �F� (disposizione fiscale). Il valore attribuito a ciascuna azione è stato di $3,73. Dopo questa trattenuta, la proprietà diretta di Desmond ammonta a 46.552 azioni ordinarie.

Non sono stati segnalati titoli derivati né acquisti o vendite sul mercato aperto. L’operazione ha natura amministrativa e non rappresenta una decisione di trading attiva da parte del direttore.

Trinseo PLC (Ticker: TSE) � Presentación Formulario 4 fechada el 24 de junio de 2025

La presentación revela una transacción interna realizada por el Director Jeanmarie F. Desmond. El 21 de junio de 2025, la empresa retuvo 10,343 acciones ordinarias para cubrir impuestos generados por la consolidación de unidades restringidas de acciones previamente otorgadas, una operación codificada como �F� (disposición relacionada con impuestos). Las acciones se valoraron en $3.73 por acción. Tras la retención, la propiedad directa de Desmond asciende a 46,552 acciones ordinarias.

No se reportaron valores derivados ni compras o ventas en el mercado abierto. La transacción es de naturaleza administrativa y no representa una decisión activa de trading por parte del director.

Trinseo PLC (티커: TSE) � 2025� 6� 24일자 Form 4 신고

해당 신고� 이사 Jeanmarie F. Desmond� 내부� 거래� 공개합니�. 2025� 6� 21�, 회사� 이전� 부여된 제한 주식 단위� 권리 확정으로 발생� 세금� 충당하기 위해 10,343� 보통�� 원천징수했으�, � 거래� �F� (세금 관� 처분)� 분류되었습니�. 주당 가치는 $3.73였습니�. 원천징수 � Desmond� 직접 보유 주식 수는 46,552� 보통�입니�.

파생 증권은 보고되지 않았으며, 공개 시장에서� 매매� 없었습니�. � 거래� 행정� 성격이며 이사� 적극적인 거래 결정� 아닙니다.

Trinseo PLC (Ticker : TSE) � Déclaration Formulaire 4 datée du 24 juin 2025

La déclaration révèle une transaction d’initié réalisée par le Directeur Jeanmarie F. Desmond. Le 21 juin 2025, la société a retenu 10 343 actions ordinaires pour couvrir les impôts générés par l’acquisition de unités d’actions restreintes précédemment attribuées, une opération codée « F » (cession liée aux impôts). Les actions ont été évaluées à 3,73 $ chacune. Après cette retenue, la propriété directe de Desmond s’élève à 46 552 actions ordinaires.

Aucun titre dérivé n’a été déclaré et il n’y a eu ni achats ni ventes sur le marché ouvert. Cette opération est de nature administrative et ne constitue pas une décision active de trading du directeur.

Trinseo PLC (Ticker: TSE) � Form 4 Meldung vom 24. Juni 2025

Die Meldung offenbart eine Insider-Transaktion von Direktor Jeanmarie F. Desmond. Am 21. Juni 2025 behielt das Unternehmen 10.343 Stammaktien ein, um Steuern zu begleichen, die durch die Zuteilung zuvor gewährter Restricted Stock Units entstanden sind, eine Transaktion mit dem Code �F� (steuerbedingte Veräußerung). Der Wert je Aktie lag bei 3,73 $. Nach der Einbehaltung beträgt Desmonds direkte Beteiligung 46.552 Stammaktien.

Es wurden keine Derivate gemeldet und es gab keine Käufe oder Verkäufe am offenen Markt. Die Transaktion ist administrativer Natur und stellt keine aktive Handelsentscheidung des Direktors dar.

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*
Desmond Jeanmarie F.

(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 10,343(1) D $3.73 46,552 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

What transaction did Trinseo (TSE) report in this Form 4?

10,343 ordinary shares were withheld from Director Jeanmarie F. Desmond on 21 Jun 2025 to cover taxes on vested RSUs.

Was the insider sale discretionary or automatic?

The filing uses code “F�, indicating an automatic tax-withholding rather than an open-market sale.

What price was assigned to the withheld Trinseo shares?

The shares were valued at $3.73 each for tax-withholding purposes.

How many Trinseo shares does the director own after the transaction?

After the withholding, Jeanmarie F. Desmond owns 46,552 ordinary shares directly.

Does the Form 4 report any derivative securities activity?

No. Table II is blank, indicating no options, warrants, or other derivatives were exercised or disposed.
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