secwatch / observer
TSEOF Trinseo PLC
CIK 0001519061 50 ready 8-Ks latest August 14, 2026, 12:38 PM ET RSS · JSON
Activity: NORMAL 2 filings / 30d vs 2 baseline
Ready 8-Ks 50
Latest filing August 14, 2026, 12:38 PM ET
Top materiality 1.00
Event mix other_material ×20 · debt ×12 · earnings ×11
Sentiment 2 pos · 28 neg · 20 neu
Latest earnings ▼ miss 2026-Q1
Executive change recent →
SHENANIGAN SCORE 1 / 7 see the board

Recent 8-K filings for TSEOF

Executive changes

Departed

Mark Tomkins

Director
TSEOF · Trinseo PLC
Filed
April 4, 2025, 7:59 PM ET
Pierre-Marie De Leener and Mark Tomkins, two members of the Board of Directors (the “Board”) of Trinseo PLC (the “Company”), notified the Company of their decision to retire from the Board and not stand for reelection at the Company’s 2025 annual general meeting of shareholders.
Departed

Pierre-Marie De Leener

Director
TSEOF · Trinseo PLC
Filed
April 4, 2025, 7:59 PM ET
Pierre-Marie De Leener and Mark Tomkins, two members of the Board of Directors (the “Board”) of Trinseo PLC (the “Company”), notified the Company of their decision to retire from the Board and not stand for reelection at the Company’s 2025 annual general meeting of shareholders.
Appointed

Roger Greene

Vice President, Controller and Principal Accounting Officer
TSEOF · Trinseo PLC
Effective
2023-09-25
Successor
David Stasse
Filed
September 22, 2023, 7:59 PM ET
On September 21, 2023, Trinseo PLC (the “Company”) appointed Roger Greene, age 47, as Vice President, Controller and Principal Accounting Officer of the Company, effective September 25, 2023.
Role change

David Stasse

Executive Vice President and Chief Financial Officer
TSEOF · Trinseo PLC
Effective
2023-09-25
Filed
September 22, 2023, 7:59 PM ET
David Stasse, the Company’s Executive Vice President and Chief Financial Officer, will no longer serve as interim principal accounting officer following Mr. Greene’s appointment.
Departed

Bernard Skeete

Vice President and Chief Accounting Officer
TSEOF · Trinseo PLC
Effective
2023-08-04
Filed
July 26, 2023, 7:59 PM ET
On July 20, 2023, Bernard Skeete informed Trinseo PLC (the “Company”) of his decision to resign from his position as Vice President and Chief Accounting Officer of the Company to pursue a new opportunity, effective August 4, 2023.
Role change (interim)

David Stasse

Chief Financial Officer (interim principal accounting officer)
TSEOF · Trinseo PLC
Filed
July 26, 2023, 7:59 PM ET
David Stasse, the Company’s Chief Financial Officer, will serve as the Company’s interim principal accounting officer until Mr. Skeete’s successor is appointed.
Departed

Andre Lanning

Senior Vice President and Chief Operating Officer
TSEOF · Trinseo PLC
Effective
2023-08-01
Filed
July 20, 2023, 7:59 PM ET
On July 18, 2023, Trinseo PLC (the “Company”) announced that Andre Lanning, the Company’s Senior Vice President and Chief Operating Officer would be terminated in connection with a reorganization of the Company’s executive leadership team.
Departed

Donald Misheff

Director
TSEOF · Trinseo PLC
Filed
April 18, 2023, 7:59 PM ET
On April 13, 2023, Donald Misheff and Philip Martens, two members of the Board of Directors (the “Board”) of Trinseo PLC (the “Company”), notified the Company of their decision to retire from the Board and not stand for reelection at the Company’s 2023 annual general meeting of shareholders.
Departed

Philip Martens

Director
TSEOF · Trinseo PLC
Filed
April 18, 2023, 7:59 PM ET
On April 13, 2023, Donald Misheff and Philip Martens, two members of the Board of Directors (the “Board”) of Trinseo PLC (the “Company”), notified the Company of their decision to retire from the Board and not stand for reelection at the Company’s 2023 annual general meeting of shareholders.
Appointed

Andre Lanning

Senior Vice President and Chief Commercial Officer
TSEOF · Trinseo PLC
Effective
2022-03-01
Filed
February 23, 2022, 6:59 PM ET
On February 21, 2022, Trinseo PLC (the “Company”) announced that Andre Lanning had been appointed as Senior Vice President and Chief Commercial Officer, effective as of March 1, 2022.
Appointed

Paula M. Cooney

Senior Vice President, Chief Human Resources Officer
TSEOF · Trinseo PLC
Effective
2021-11-29
Filed
October 27, 2021, 7:59 PM ET
Effective as of November 29, 2021, Paula M. Cooney, will join the Company as Senior Vice President, Chief Human Resources Officer.
Departed

Alice Heezen

Senior Vice President, Human Resources
TSEOF · Trinseo PLC
Successor
Paula M. Cooney
Filed
October 27, 2021, 7:59 PM ET
On October 27, 2021, Trinseo PLC (the “Company”) announced that Alice Heezen, the Company’s Senior Vice President, Human Resources is leaving the Company to pursue other opportunities.

Earnings & guidance

2026-Q1 EPS reported -$3.20 vs consensus -$2.49 ▼ miss (-28.4%) filing →

Materiality & sentiment trend

Max materiality 1.00 · Median 0.72 · Most common event other_material

2 positive 28 negative 20 neutral

source · TSEOF on sec.gov