Trinseo Plc SEC Filings

SEC Form 4 filing overview: On 25 June 2025, Trinseo PLC (ticker: TSE) reported that board director Sandra Beach Lin acquired 42,484 ordinary shares through a restricted stock unit (RSU) grant. The RSUs were issued at a stated price of $0 as part of the company’s equity-based compensation program and will vest in full on the first anniversary of the grant date, according to the single footnote provided.

Post-transaction ownership: Following the award, Lin’s aggregate beneficial ownership increased to 87,260 shares, all held directly.

Materiality assessment: The transaction does not involve open-market buying or selling and therefore does not signal a valuation opinion. It represents standard director compensation and is modest in size relative to Trinseo’s ~35 million shares outstanding (dilution impact well under 0.1%). However, the grant modestly strengthens alignment between the director and shareholders by increasing equity exposure.

Form 4 Overview: Trinseo PLC (ticker: TSE) filed a Form 4 disclosing that board director Victoria Brifo was granted 42,484 ordinary shares in the form of restricted stock units (RSUs) on 25 June 2025. The RSUs will vest in full on the first anniversary of the grant date, subject to continued service.

Following this award, Brifo’s total beneficial ownership rises to 83,225 ordinary shares. The transaction is coded “A” (acquired) at a price of $0, indicating an equity compensation grant rather than an open-market purchase. There were no derivative securities reported and no dispositions.

Key Takeaways for Investors:

• The award increases insider equity alignment but does not represent cash outlay by the director.
• The single-line nature of the filing suggests no other insider trades on the date.
• No indication of 10b5-1 trading plan was checked, implying the grant was standard board compensation.

Trinseo PLC (TSE) – Form 4 insider filing

Director Jeffrey J. Cote reported a change in beneficial ownership effective 25 June 2025. The filing discloses:

• 42,484 ordinary shares were acquired through a restricted stock unit (RSU) grant that vests in full on the first anniversary of the grant date. The grant price is listed as $0 because RSUs are issued without cash consideration.
• Following the award, Cote directly owns 88,183 ordinary shares and indirectly controls 170,503 shares held by the “Cote 2019 Irrevocable Indenture Trust” for the benefit of himself and his children.
• No derivative securities transactions were reported for the period.

The filing is single-party, routine in nature, and does not reference any sales, option exercises, or 10b5-1 trading plans.

Trinseo PLC (TSE) – Form 4 filed 27 Jun 2025

Director Jeanmarie F. Desmond reported the grant of 42,484 ordinary shares on 25 Jun 2025 via a restricted stock unit (RSU) award. The RSUs were acquired at $0 cost and will vest in full one year from the grant date. After the award, Desmond’s total beneficial ownership rises to 89,036 ordinary shares, all held directly. No sales, option exercises, or other derivative transactions were disclosed. The filing reflects routine director equity compensation intended to align interests with shareholders; it does not involve an open-market purchase, cash expenditure, or indicate any change in control.

Form 4 filing overview – Trinseo PLC (TSE)

On 06/25/2025, Trinseo PLC filed a Form 4 detailing an equity award to independent director Matthew Farrell. The filing shows that Farrell received 42,484 ordinary shares in the form of a restricted stock unit (RSU) grant. According to the explanatory note, the RSUs will vest in full on the first anniversary of the grant date, subject to continued service. No cash was exchanged, so the transaction price is reported as $0.

Following the award, Farrell’s total beneficial ownership increased to 150,225 ordinary shares, all held directly. The filing does not list any derivative securities and does not disclose other open‐market purchases or sales.

Key contextual points for investors:

• Alignment of interests: Equity compensation can strengthen alignment between directors and shareholders.
• Non-cash, scheduled vesting: Because the units are subject to a one-year vesting schedule, immediate share count impact is limited; dilution, if any, occurs upon vesting.
• Routine compensation: The award appears to be part of standard director compensation rather than a discretionary purchase, which typically carries less signaling value than an open-market buy.

No other material transactions, financial results, or changes in governance were disclosed in this filing.

Form 4 filing overview: On 06/25/2025, Trinseo PLC (ticker: TSE) disclosed that Director Lynne K. Johnson received 42,484 ordinary shares through a restricted stock unit (RSU) award. The award was booked at an acquisition price of $0 and will vest in full on the first anniversary of the grant date. Following the grant, Johnson’s total beneficial ownership stands at 90,913 ordinary shares. No sales, option exercises, or other derivative transactions were reported, and there were no indications of 10b5-1 plan activity. The transaction is classified under code “A” (grant/acquisition) and is a routine director equity award intended to align management and shareholder interests.

Key facts from the Form 4 filing: On 06/25/2025 Trinseo PLC (ticker: TSE) reported that non-executive director Henri Steinmetz received 42,484 ordinary shares of the company under a restricted stock unit (RSU) award, recorded under transaction code “A” (grant without cash payment). The RSUs carry an acquisition price of $0 and will vest in full one year after the grant date, as noted in the explanatory footnote.

After the grant, Steinmetz’s total directly held stake rises to 95,937 shares. No derivative securities or additional transactions were disclosed, and the filing was made individually by Steinmetz (Form filed by one reporting person).

Investor take-aways:

• The transaction is a routine equity-based compensation grant for a board member, not an open-market purchase or sale. As such, it does not reflect active buying or selling sentiment.
• The incremental share issuance is de-minimis relative to Trinseo’s total shares outstanding and therefore has immaterial dilution impact on existing shareholders.
• Because the award vests after 12 months, it encourages continued board service and further aligns the director’s incentives with long-term shareholder value.

No financial results, guidance updates, or strategic developments accompanied the filing. Overall, the disclosure is administrative in nature and is unlikely to affect Trinseo’s near-term valuation or risk profile.

Form 4/A overview: Trinseo PLC (TSE) director Jeffrey J. Cote reported an amended change in beneficial ownership dated 06/21/2025 and filed 06/27/2025. The sole reportable transaction is coded “F”, indicating shares were withheld to cover taxes upon vesting of previously granted restricted stock units and therefore not an open-market sale.

Key details

• 10,310 ordinary shares were withheld at a reference price of $3.73, reducing Mr. Cote’s direct holdings to 45,699 shares.
• The filing corrects the size of an indirect position held by the Cote 2019 Irrevocable Indenture Trust to 170,503 shares; no new transaction occurred for this block.
• Total beneficial ownership after the amendment equals 216,202 shares (direct + indirect).

Investor take-away: Because the F-code transaction is a routine tax-withholding event and the amendment merely restates indirect ownership, the filing carries minimal market impact. No purchase or discretionary sale was executed, and the insider remains a substantial shareholder.

Trinseo (NYSE:TSE) filed an 8-K reporting results of its 25 Jun 2025 Annual General Meeting, where 85.5 % of outstanding shares were represented.

• Directors: all nine nominees re-elected.
• Say-on-Pay: 96.8 % support for 2024 compensation.
• Auditor: PwC ratified through 2025.
• Capital flexibility: shareholders authorized the Board to issue shares and disapply pre-emption rights on up to 10 % of issued capital.
• Treasury share re-issuance: price-range approved.
• 2014 Omnibus Incentive Plan amended; updated plan filed as Exhibit 10.1.
• Option forfeiture: CEO, CFO and CLO to surrender certain options (≈90 % approval).

No financial results were provided; the filing centers on governance and equity authorization, implying potential dilution offset by reduced option overhang.