Reported relationships
Latest disclosed role at each company.
| Company | Last reported as | Report date | Published |
|---|---|---|---|
| Trinseo PLCTSE · Entity 8671 | SVP, Corporate Finance & IR | 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 | 98,296 |
Reported balance
After 2026-02-27 transaction · row 1
1 source rowRow 1 · 2026-02-27 · Tax withholding · Disposed 6,064 · Balance 98,296 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 27, 2026 Filed Mar 3, 2026 14:26 UTC | Trinseo PLC TSE · Entity 8671 | Tax withholdingOrdinary Shares | 6,064 | $0.23 | $1,394.72 |
DisclosureSEC source: 0001949985-26-000002 · form4-03032026_070303.xml · nonDerivative · entry 1 van Kessel Bregje · CIK 0001949985 · SVP, Corporate Finance & IR 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 98,296 F1 · shares: Shares withheld by the Company to pay taxes due following the vesting of previously granted restricted stock units. Read SEC document |
| February 22, 2026 Filed Feb 24, 2026 15:45 UTC | Trinseo PLC TSE · Entity 8671 | Tax withholdingOrdinary Shares | 1,335 | $0.33 | $437.35 |
DisclosureSEC source: 0001949985-26-000001 · form4-02242026_080239.xml · nonDerivative · entry 2 van Kessel Bregje · CIK 0001949985 · SVP, Corporate Finance & IR 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 104,360 F1 · shares: Shares withheld by the Company to pay taxes due following the vesting of previously granted restricted stock units. Read SEC document |
| February 21, 2026 Filed Feb 24, 2026 15:45 UTC | Trinseo PLC TSE · Entity 8671 | Tax withholdingOrdinary Shares | 5,963 | $0.33 | $1,953.48 |
DisclosureSEC source: 0001949985-26-000001 · form4-02242026_080239.xml · nonDerivative · entry 1 van Kessel Bregje · CIK 0001949985 · SVP, Corporate Finance & IR 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 105,695 F1 · shares: Shares withheld by the Company to pay taxes due following the vesting of previously granted restricted stock units. Read SEC document |
| February 27, 2025 Filed Mar 3, 2025 15:51 UTC | Trinseo PLC TSE · Entity 8671 | GrantOrdinary Shares | 51,973 | $0.00 | $0.00 |
DisclosureSEC source: 0001415889-25-006133 · form4-03032025_080340.xml · nonDerivative · entry 1 van Kessel Bregje · CIK 0001949985 · SVP, Corporate Finance & IR 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 111,658 F1 · shares: Represents ordinary shares issuable pursuant to RSU awards that will vest in three equal annual installments beginning on the first anniversary of the date of grant. Read SEC document |
| February 21, 2025 Filed Feb 25, 2025 12:53 UTC | Trinseo PLC TSE · Entity 8671 | Tax withholdingOrdinary Shares | 903 | $5.52 | $4,984.56 |
DisclosureSEC source: 0001415889-25-005412 · form4-02252025_050212.xml · nonDerivative · entry 1 van Kessel Bregje · CIK 0001949985 · SVP, Corporate Finance & IR 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 59,685 F1 · shares: Shares withheld by the Company to pay taxes due following the vesting of previously granted restricted stock units. Read SEC document |
| February 16, 2025 Filed Feb 18, 2025 16:11 UTC | Trinseo PLC TSE · Entity 8671 | Tax withholdingOrdinary Shares | 70 | $5.14 | $359.80 |
DisclosureSEC source: 0001415889-25-004394 · form4-02182025_090222.xml · nonDerivative · entry 1 van Kessel Bregje · CIK 0001949985 · SVP, Corporate Finance & IR 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 60,588 F1 · shares: Shares withheld by the Company to pay taxes due following the vesting of previously granted restricted stock units. Read SEC document |
| February 21, 2024 Filed Feb 23, 2024 16:25 UTC | Trinseo PLC TSE · Entity 8671 | GrantOrdinary Shares | 51,109 | $0.00 | $0.00 |
DisclosureSEC source: 0001415889-24-005023 · form4-02232024_090212.xml · nonDerivative · entry 1 van Kessel Bregje · CIK 0001949985 · SVP, PLASTICS SOLUTIONS 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 60,658 F1 · shares: Represents ordinary shares issuable pursuant to RSU awards that will vest in three equal annual installments beginning on the first anniversary of the date of grant. Read SEC document |
| February 17, 2024 Filed Feb 21, 2024 21:06 UTC | Trinseo PLC TSE · Entity 8671 | Tax withholdingOrdinary Shares | 69 | $4.78 | $329.82 |
DisclosureSEC source: 0001415889-24-004700 · form4-02222024_020215.xml · nonDerivative · entry 1 van Kessel Bregje · CIK 0001949985 · SVP, PLASTICS SOLUTIONS 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 9,549 F1 · shares: Shares withheld by the Company to pay taxes due following the vesting of previously granted restricted stock units. Read SEC document |
| February 25, 2023 Filed Feb 28, 2023 17:31 UTC | Trinseo PLC TSE · Entity 8671 | Tax withholdingOrdinary Shares | 155 | $24.30 | $3,766.50 |
DisclosureSEC source: 0001567619-23-003965 · doc1.xml · nonDerivative · entry 1 van Kessel Bregje · CIK 0001949985 · SVP, Plastic Solutions 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 9,618 F1 · shares: Shares withheld by the Company to pay taxes due following the vesting of previously granted restricted stock units. Read SEC document |
| February 22, 2023 Filed Feb 24, 2023 18:13 UTC | Trinseo PLC TSE · Entity 8671 | GrantOption to Purchase Ordinary Shares · Derivative | 8,456 | $0.00 Strike: $24.08 | $0.00 |
DisclosureSEC source: 0001567619-23-003792 · doc1.xml · derivative · entry 2 van Kessel Bregje · CIK 0001949985 · SVP, Plastic Solutions 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 8,456 Underlying: Ordinary Shares · 8,456 shares Expires 2032-02-22 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 22, 2023 Filed Feb 24, 2023 18:13 UTC | Trinseo PLC TSE · Entity 8671 | GrantOrdinary Shares | 3,814 | $0.00 | $0.00 |
DisclosureSEC source: 0001567619-23-003792 · doc1.xml · nonDerivative · entry 1 van Kessel Bregje · CIK 0001949985 · SVP, Plastic Solutions 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 9,773 F1 · shares: Represents ordinary shares issuable pursuant to RSU award that will vest in full on the third anniversary of the grant. 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.