Mark E. Tomkins

Companies

• Trinseo PLCBoard member Nov 22, 2019 to now¹
• W. R. Grace and CompanyBoard member Sep 12, 2006 to Sep 22, 2021²
• TERMINIX GLOBAL HOLDINGS INCBoard member Jun 9, 2015 to Nov 13, 2020³
• CVR ENERGY INCBoard member Oct 22, 2007 to Jan 4, 2012⁴

Holdings

Stock this person has reported owning, from the forms officers and directors file with the SEC. See the biggest insider stakes.

Shares held

• TTrinseo PLC TSEOQ36,619 shares⁵$146 at $0.00Jun 21, 2025

As of each latest filing. The line shows shares held over time.

Recent filings

• Jun 21, 2025Shares withheld for tax 10,105 shares at $3.73 of Trinseo PLC⁵
• Aug 13, 2024Sold 11,142 shares at $2.54 of Trinseo PLC⁶
• Jun 21, 2024Granted 41,009 shares of Trinseo PLC⁷
• Jun 14, 2024Shares withheld for tax 3,326 shares at $2.84 of Trinseo PLC⁸
• Jun 14, 2023Shares withheld for tax 956 shares at $14.38 of Trinseo PLC⁹
• Jun 14, 2023Shares withheld for tax 943 shares at $14.38 of Trinseo PLC¹⁰
• Jun 14, 2023Granted 9,041 shares of Trinseo PLC⁹
• Jun 14, 2023Granted 9,041 shares of Trinseo PLC¹⁰
• Jun 17, 2022Shares withheld for tax 1,113 shares at $37.43 of Trinseo PLC¹¹
• Jun 14, 2022Granted 3,183 shares of Trinseo PLC¹²