Form 4: Trinseo Director Mark Tomkins Reports Routine Share Withholding for Tax Obligations

Trinseo PLC Director Mark E. Tomkins reported a disposition of 10,105 ordinary shares valued at $3.73 per share, withheld by the company to cover tax liabilities stemming from the vesting of restricted stock units.

Summary

• Mark E. Tomkins, a Director of Trinseo PLC (TSE), reported a transaction on June 21, 2025.
• The transaction involved the disposition of 10,105 ordinary shares.
• These shares were withheld by Trinseo PLC to satisfy tax obligations incurred by Mr. Tomkins following the vesting of previously granted restricted stock units.
• The shares were valued at $3.73 per share for the purpose of this transaction.
• Following this transaction, Mr. Tomkins beneficially owns 36,619 ordinary shares directly.

Sentiment

Score: 5

Explanation: The transaction is a routine administrative event (tax withholding) and does not indicate a positive or negative sentiment regarding the company's performance or outlook. It is a neutral event.

Negatives

• The beneficial ownership of Director Mark E. Tomkins in Trinseo PLC ordinary shares decreased by 10,105 shares due to the tax withholding.

Future Outlook

The document does not contain any forward-looking statements or guidance.

Industry Context

This Form 4 filing is a routine disclosure of an insider transaction, specifically a tax-related share withholding, which is a common administrative event for executives and directors receiving equity compensation. It does not provide broader insights into industry trends or competitive positioning.

Stakeholder Impact

• Shareholders: The transaction represents a minor, routine reduction in a director's direct shareholding, which is unlikely to have a material impact on other shareholders.
• Employees: No direct impact on employees is indicated by this filing.

Key Dates

Keywords

Trinseo PLC, TSE, Form 4, Insider Transaction, Director Shareholding, Restricted Stock Units, Tax Withholding, Share Disposition, Mark E. Tomkins