Reported relationships
Latest disclosed role at each company.
| Company | Last reported as | Report date | Published |
|---|---|---|---|
| Trinseo PLCTSE · Entity 8671 | EVP AND CFO | February 27, 2026 | March 03, 2026 |
Disclosed balances
About these balances
Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.
Trinseo PLC
Report date February 27, 2026 · Filed March 03, 2026
| Security / award | Ownership account | Disclosed shares / units | Disclosure context |
|---|---|---|---|
| Ordinary SharesSEC Table I · non-derivative | Direct | 254,788 |
Reported balance
After 2026-02-27 transaction · row 1
1 source rowRow 1 · 2026-02-27 · Tax withholding · Disposed 10,366 · Balance 254,788 F1: Shares withheld by the Company to pay taxes due following the vesting of previously granted restricted stock units. |
Filing footnotes · ownership attribution and instrument terms
F1: Shares withheld by the Company to pay taxes due following the vesting of previously granted restricted stock units.
Transaction history
JSON APIPurchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”
The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.
| Transaction date | Company | Activity / security | Shares / units | Reported price | Reported value | Details |
|---|---|---|---|---|---|---|
| February 22, 2018 Filed Feb 26, 2018 18:18 UTC | Trinseo PLC TSE · Entity 8671 | GrantOrdinary Shares | 2,468 | $0.00 | $0.00 |
DisclosureSEC source: 0001179110-18-002910 · edgar.xml · nonDerivative · entry 1 Stasse David Phillip · CIK 0001441657 · See Remarks 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 25,146 F1 · shares: Represents ordinary shares issuable pursuant to a restricted stock unit award that will vest in full on the third anniversary of the grant date. Read SEC document |
| November 10, 2017 Filed Nov 13, 2017 16:17 UTC | Trinseo PLC TSE · Entity 8671 | Exercise / conversionOption to Purchase Ordinary Shares · Derivative | 2,345 | $0.00 Strike: $26.97 | $0.00 |
DisclosureSEC source: 0001179110-17-014023 · edgar.xml · derivative · entry 8 Stasse David Phillip · CIK 0001441657 · See Remarks 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 12,335 Underlying: Ordinary Shares · 2,345 shares Expires 2025-02-22 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. Read SEC document |
| November 10, 2017 Filed Nov 13, 2017 16:17 UTC | Trinseo PLC TSE · Entity 8671 | Exercise / conversionOption to Purchase Ordinary Shares · Derivative | 1,692 | $0.00 Strike: $27.81 | $0.00 |
DisclosureSEC source: 0001179110-17-014023 · edgar.xml · derivative · entry 7 Stasse David Phillip · CIK 0001441657 · See Remarks 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 14,680 Underlying: Ordinary Shares · 1,692 shares Expires 2024-06-25 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. Read SEC document |
| November 10, 2017 Filed Nov 13, 2017 16:17 UTC | Trinseo PLC TSE · Entity 8671 | Exercise / conversionOption to Purchase Ordinary Shares · Derivative | 6,006 | $0.00 Strike: $18.14 | $0.00 |
DisclosureSEC source: 0001179110-17-014023 · edgar.xml · derivative · entry 6 Stasse David Phillip · CIK 0001441657 · See Remarks 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 16,372 Underlying: Ordinary Shares · 6,006 shares Expires 2024-02-27 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. Read SEC document |
| November 10, 2017 Filed Nov 13, 2017 16:17 UTC | Trinseo PLC TSE · Entity 8671 | SaleOrdinary Shares | 5,100 | $71.56 | $364,947.33 |
DisclosureSEC source: 0001179110-17-014023 · edgar.xml · nonDerivative · entry 5 Stasse David Phillip · CIK 0001441657 · See Remarks 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 22,678 F2 · price: Represents the weighted average sale price for price increments ranging from $71.30 to $72.00, inclusive. The reporting person undertakes to provide to Trinseo S.A., any security holder of Trinseo S.A., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote (2) to this Form 4. Read SEC document |
| November 10, 2017 Filed Nov 13, 2017 16:17 UTC | Trinseo PLC TSE · Entity 8671 | SaleOrdinary Shares | 4,943 | $70.78 | $349,853.18 |
DisclosureSEC source: 0001179110-17-014023 · edgar.xml · nonDerivative · entry 4 Stasse David Phillip · CIK 0001441657 · See Remarks 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 27,778 F1 · price: Represents the weighted average sale price for price increments ranging from $70.30 to $71.15, inclusive. The reporting person undertakes to provide to Trinseo S.A., any security holder of Trinseo S.A., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote (1) to this Form 4. Read SEC document |
| November 10, 2017 Filed Nov 13, 2017 16:17 UTC | Trinseo PLC TSE · Entity 8671 | Exercise / conversionOrdinary Shares | 2,345 | $26.97 | $63,244.65 |
DisclosureSEC source: 0001179110-17-014023 · edgar.xml · nonDerivative · entry 3 Stasse David Phillip · CIK 0001441657 · See Remarks 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 32,721 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. Read SEC document |
| November 10, 2017 Filed Nov 13, 2017 16:17 UTC | Trinseo PLC TSE · Entity 8671 | Exercise / conversionOrdinary Shares | 1,692 | $27.81 | $47,054.52 |
DisclosureSEC source: 0001179110-17-014023 · edgar.xml · nonDerivative · entry 2 Stasse David Phillip · CIK 0001441657 · See Remarks 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 30,376 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. Read SEC document |
| November 10, 2017 Filed Nov 13, 2017 16:17 UTC | Trinseo PLC TSE · Entity 8671 | Exercise / conversionOrdinary Shares | 6,006 | $18.14 | $108,948.84 |
DisclosureSEC source: 0001179110-17-014023 · edgar.xml · nonDerivative · entry 1 Stasse David Phillip · CIK 0001441657 · See Remarks 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 28,684 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. Read SEC document |
| March 02, 2017 Filed Mar 6, 2017 17:15 UTC | Trinseo PLC TSE · Entity 8671 | SaleOrdinary Shares | 5,000 | $71.00 | $355,000.00 |
DisclosureSEC source: 0001179110-17-004025 · edgar.xml · nonDerivative · entry 1 Stasse David Phillip · CIK 0001441657 · See Remarks 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 22,678 Read SEC document |
| February 16, 2017 Filed Feb 21, 2017 18:06 UTC | Trinseo PLC TSE · Entity 8671 | GrantOption to Purchase Ordinary Shares · Derivative | 3,794 | $0.00 Strike: $71.45 | $0.00 |
DisclosureSEC source: 0001179110-17-002821 · edgar.xml · derivative · entry 2 Stasse David Phillip · CIK 0001441657 · See Remarks 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 22,378 Underlying: Ordinary Shares · 3,794 shares Expires 2026-02-16 F2 · derivative.exercise_date: The option vests in three equal annual installments beginning on the first anniversary of the grant date. Read SEC document |
| February 16, 2017 Filed Feb 21, 2017 18:06 UTC | Trinseo PLC TSE · Entity 8671 | GrantOrdinary Shares | 2,554 | $0.00 | $0.00 |
DisclosureSEC source: 0001179110-17-002821 · edgar.xml · nonDerivative · entry 1 Stasse David Phillip · CIK 0001441657 · See Remarks 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 27,678 F1 · shares: Represents ordinary shares issuable pursuant to a restricted stock unit award that will vest in full on the third anniversary of the grant date. Read SEC document |
Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.