STOCK TITAN

[Form 4] Trinseo PLC Insider Trading Activity

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

SEC Form 4 snapshot: Trinseo PLC (TSE) director K. Lynne Johnson reported a disposal of 10,474 ordinary shares on 06/21/2025. The shares were withheld by the company at $3.73 per share to satisfy tax obligations tied to the vesting of previously granted restricted stock units (transaction code “F”).

After the tax-related withholding, Johnson’s direct ownership stands at 48,429 ordinary shares. No derivative securities or Rule 10b5-1 trading plan were disclosed.

Because “F”-coded transactions reflect mandatory tax settlements rather than discretionary trading, the filing is generally viewed as neutral with minimal impact on insider sentiment or valuation outlook.

Riepilogo modulo SEC Form 4: La direttrice di Trinseo PLC (TSE), K. Lynne Johnson, ha segnalato la cessione di 10.474 azioni ordinarie il 21/06/2025. Le azioni sono state trattenute dalla società al prezzo di 3,73 $ ciascuna per adempiere agli obblighi fiscali legati al consolidamento di unità azionarie vincolate precedentemente assegnate (codice transazione “F”).

Dopo la trattenuta fiscale, la proprietà diretta di Johnson ammonta a 48.429 azioni ordinarie. Non sono stati dichiarati titoli derivati né piani di trading secondo la regola 10b5-1.

Poiché le transazioni con codice “F” rappresentano regolamenti fiscali obbligatori e non operazioni discrezionali, la comunicazione è generalmente considerata neutrale, con un impatto minimo sul sentiment degli insider o sulle prospettive di valutazione.

Resumen del formulario SEC Form 4: La directora de Trinseo PLC (TSE), K. Lynne Johnson, reportó la disposición de 10,474 acciones ordinarias el 21/06/2025. Las acciones fueron retenidas por la empresa a $3.73 por acción para cumplir con obligaciones fiscales relacionadas con la consolidación de unidades restringidas previamente otorgadas (código de transacción “F”).

Después de la retención fiscal, la propiedad directa de Johnson es de 48,429 acciones ordinarias. No se divulgaron valores derivados ni planes de negociación bajo la regla 10b5-1.

Dado que las transacciones codificadas como “F” reflejan liquidaciones fiscales obligatorias en lugar de operaciones discrecionales, la presentación generalmente se considera neutral, con un impacto mínimo en el sentimiento de los insiders o en las perspectivas de valoración.

SEC Form 4 요약: Trinseo PLC(TSE) 이사 K. Lynne Johnson이 2025년 6월 21일에 10,474주 보통주 처분을 보고했습니다. 해당 주식은 이전에 부여된 제한 주식 단위의 권리 확정과 관련된 세금 의무를 충족하기 위해 회사가 주당 $3.73원천징수했습니다(거래 코드 “F”).

세금 원천징수 후 Johnson의 직접 보유 주식 수는 48,429주입니다. 파생 증권이나 Rule 10b5-1 거래 계획은 공개되지 않았습니다.

“F” 코드 거래는 임의 거래가 아닌 의무적인 세금 정산을 반영하므로, 이 신고는 일반적으로 내부자 심리나 가치 평가 전망에 미미한 영향을 주는 중립적인 것으로 간주됩니다.

Résumé du formulaire SEC Form 4 : La directrice de Trinseo PLC (TSE), K. Lynne Johnson, a déclaré la cession de 10 474 actions ordinaires le 21/06/2025. Les actions ont été retenues par la société au prix de 3,73 $ par action pour satisfaire aux obligations fiscales liées à l’acquisition des unités d’actions restreintes précédemment attribuées (code de transaction « F »).

Après cette retenue fiscale, la détention directe de Johnson s’élève à 48 429 actions ordinaires. Aucun titre dérivé ni plan de négociation selon la règle 10b5-1 n’a été divulgué.

Étant donné que les transactions codées « F » reflètent des règlements fiscaux obligatoires plutôt que des opérations discrétionnaires, le dépôt est généralement considéré comme neutre, avec un impact minimal sur le sentiment des initiés ou les perspectives d’évaluation.

SEC Formular 4 Zusammenfassung: Die Direktorin von Trinseo PLC (TSE), K. Lynne Johnson, meldete am 21.06.2025 die Veräußerung von 10.474 Stammaktien. Die Aktien wurden vom Unternehmen zum Preis von 3,73 $ pro Aktie einbehalten, um steuerliche Verpflichtungen im Zusammenhang mit der Vesting von zuvor gewährten Restricted Stock Units zu erfüllen (Transaktionscode „F“).

Nach der steuerbedingten Einbehaltung besitzt Johnson direkt 48.429 Stammaktien. Es wurden keine derivative Wertpapiere oder Rule 10b5-1 Handelspläne offengelegt.

Da „F“-codierte Transaktionen obligatorische Steuerabwicklungen und keine freiwilligen Handelsaktivitäten darstellen, wird die Meldung in der Regel als neutral eingestuft, mit minimalen Auswirkungen auf die Insider-Stimmung oder Bewertungsaussichten.

Positive
  • None.
Negative
  • None.

Insights

TL;DR: Routine tax-withholding disposition; insider still owns 48k shares—neutral to sentiment.

The Form 4 registers a non-discretionary, code “F” share disposition. Such transactions do not signal confidence or concern; they merely settle payroll taxes after RSU vesting. Johnson’s post-event stake (48,429 shares) remains material, indicating continued alignment with shareholders. There are no derivative positions or 10b5-1 plans that could alter this interpretation. Given the small absolute value and the administrative nature, I rank the impact as neutral.

TL;DR: Compliance filing shows proper tax handling; no governance red flags.

The company correctly withheld shares to cover statutory taxes, reducing cash outlay for the director and maintaining transparency under Section 16. Absence of derivative transactions and unchanged overall ownership mitigate any perception of aggressive trading. Governance processes appear intact, and the filing meets timeliness requirements. Investors should not infer strategic intent from this action.

Riepilogo modulo SEC Form 4: La direttrice di Trinseo PLC (TSE), K. Lynne Johnson, ha segnalato la cessione di 10.474 azioni ordinarie il 21/06/2025. Le azioni sono state trattenute dalla società al prezzo di 3,73 $ ciascuna per adempiere agli obblighi fiscali legati al consolidamento di unità azionarie vincolate precedentemente assegnate (codice transazione “F”).

Dopo la trattenuta fiscale, la proprietà diretta di Johnson ammonta a 48.429 azioni ordinarie. Non sono stati dichiarati titoli derivati né piani di trading secondo la regola 10b5-1.

Poiché le transazioni con codice “F” rappresentano regolamenti fiscali obbligatori e non operazioni discrezionali, la comunicazione è generalmente considerata neutrale, con un impatto minimo sul sentiment degli insider o sulle prospettive di valutazione.

Resumen del formulario SEC Form 4: La directora de Trinseo PLC (TSE), K. Lynne Johnson, reportó la disposición de 10,474 acciones ordinarias el 21/06/2025. Las acciones fueron retenidas por la empresa a $3.73 por acción para cumplir con obligaciones fiscales relacionadas con la consolidación de unidades restringidas previamente otorgadas (código de transacción “F”).

Después de la retención fiscal, la propiedad directa de Johnson es de 48,429 acciones ordinarias. No se divulgaron valores derivados ni planes de negociación bajo la regla 10b5-1.

Dado que las transacciones codificadas como “F” reflejan liquidaciones fiscales obligatorias en lugar de operaciones discrecionales, la presentación generalmente se considera neutral, con un impacto mínimo en el sentimiento de los insiders o en las perspectivas de valoración.

SEC Form 4 요약: Trinseo PLC(TSE) 이사 K. Lynne Johnson이 2025년 6월 21일에 10,474주 보통주 처분을 보고했습니다. 해당 주식은 이전에 부여된 제한 주식 단위의 권리 확정과 관련된 세금 의무를 충족하기 위해 회사가 주당 $3.73원천징수했습니다(거래 코드 “F”).

세금 원천징수 후 Johnson의 직접 보유 주식 수는 48,429주입니다. 파생 증권이나 Rule 10b5-1 거래 계획은 공개되지 않았습니다.

“F” 코드 거래는 임의 거래가 아닌 의무적인 세금 정산을 반영하므로, 이 신고는 일반적으로 내부자 심리나 가치 평가 전망에 미미한 영향을 주는 중립적인 것으로 간주됩니다.

Résumé du formulaire SEC Form 4 : La directrice de Trinseo PLC (TSE), K. Lynne Johnson, a déclaré la cession de 10 474 actions ordinaires le 21/06/2025. Les actions ont été retenues par la société au prix de 3,73 $ par action pour satisfaire aux obligations fiscales liées à l’acquisition des unités d’actions restreintes précédemment attribuées (code de transaction « F »).

Après cette retenue fiscale, la détention directe de Johnson s’élève à 48 429 actions ordinaires. Aucun titre dérivé ni plan de négociation selon la règle 10b5-1 n’a été divulgué.

Étant donné que les transactions codées « F » reflètent des règlements fiscaux obligatoires plutôt que des opérations discrétionnaires, le dépôt est généralement considéré comme neutre, avec un impact minimal sur le sentiment des initiés ou les perspectives d’évaluation.

SEC Formular 4 Zusammenfassung: Die Direktorin von Trinseo PLC (TSE), K. Lynne Johnson, meldete am 21.06.2025 die Veräußerung von 10.474 Stammaktien. Die Aktien wurden vom Unternehmen zum Preis von 3,73 $ pro Aktie einbehalten, um steuerliche Verpflichtungen im Zusammenhang mit der Vesting von zuvor gewährten Restricted Stock Units zu erfüllen (Transaktionscode „F“).

Nach der steuerbedingten Einbehaltung besitzt Johnson direkt 48.429 Stammaktien. Es wurden keine derivative Wertpapiere oder Rule 10b5-1 Handelspläne offengelegt.

Da „F“-codierte Transaktionen obligatorische Steuerabwicklungen und keine freiwilligen Handelsaktivitäten darstellen, wird die Meldung in der Regel als neutral eingestuft, mit minimalen Auswirkungen auf die Insider-Stimmung oder Bewertungsaussichten.

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*
Johnson KLynne

(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 10,474(1) D $3.73 48,429 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 insider activity did Trinseo (TSE) report in the latest Form 4?

Director K. Lynne Johnson had 10,474 shares withheld to pay taxes on vested RSUs.

When did the Trinseo insider transaction occur?

The transaction date was June 21, 2025.

How many Trinseo shares does Johnson own after the transaction?

She now directly owns 48,429 ordinary shares.

Was the transaction an open-market sale?

No. It was a code “F” tax-withholding event, not a discretionary sale.

At what price were the shares valued for withholding purposes?

The shares were valued at $3.73 apiece.

Did the filing list any derivative securities?

No derivative securities were reported.
Trinseo Plc

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