{"transactions":[{"id":1102581,"issuer":{"id":8671,"kind":"organization","name":"Trinseo PLC"},"owners":[{"id":78171,"kind":"person","name":"De Leener Pierre-Marie","position":1,"cik":"0001423137","reported_name":"De Leener Pierre-Marie","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Ordinary Shares","published_at":"2025-06-24T16:15:17.000Z","date":"2025-06-21","kind":"tax_withholding","planned":false,"acquired":false,"shares":20001,"price":3.73,"value":74603.73,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Shares withheld by the Company to pay taxes due following the vesting of previously granted restricted stock units."}],"balance_after":36174,"source":{"system":"sec-edgar","filing":"0001415889-25-018056","document":"form4-06242025_040611.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1423137/000141588925018056/form4-06242025_040611.xml","form_type":"4"}},{"id":1469425,"issuer":{"id":8671,"kind":"organization","name":"Trinseo PLC"},"owners":[{"id":78171,"kind":"person","name":"De Leener Pierre-Marie","position":1,"cik":"0001423137","reported_name":"De Leener Pierre-Marie","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Ordinary Shares","published_at":"2024-06-25T16:34:47.000Z","date":"2024-06-21","kind":"grant","planned":false,"acquired":true,"shares":41009,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents ordinary shares issuable pursuant to a restricted stock unit award that will vest in full on the first anniversary of the grant date."}],"balance_after":56175,"source":{"system":"sec-edgar","filing":"0001415889-24-018146","document":"form4-06252024_080644.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1423137/000141588924018146/form4-06252024_080644.xml","form_type":"4"}},{"id":1475078,"issuer":{"id":8671,"kind":"organization","name":"Trinseo PLC"},"owners":[{"id":78171,"kind":"person","name":"De Leener Pierre-Marie","position":1,"cik":"0001423137","reported_name":"De Leener Pierre-Marie","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Ordinary Shares","published_at":"2024-06-18T16:33:26.000Z","date":"2024-06-14","kind":"tax_withholding","planned":false,"acquired":false,"shares":4411,"price":2.84,"value":12527.24,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Shares withheld by the Company to pay taxes due following the vesting of previously granted restricted stock units."}],"balance_after":15166,"source":{"system":"sec-edgar","filing":"0001415889-24-017424","document":"form4-06182024_080622.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1423137/000141588924017424/form4-06182024_080622.xml","form_type":"4"}},{"id":1830243,"issuer":{"id":8671,"kind":"organization","name":"Trinseo PLC"},"owners":[{"id":78171,"kind":"person","name":"De Leener Pierre-Marie","position":1,"cik":"0001423137","reported_name":"De Leener Pierre-Marie","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Ordinary Shares","published_at":"2023-07-13T16:50:15.000Z","date":"2023-06-14","kind":"tax_withholding","planned":false,"acquired":false,"shares":1567,"price":14.38,"value":22533.46,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Shares withheld by the Company to pay taxes due following the vesting of previously granted restricted stock units."}],"balance_after":19577,"source":{"system":"sec-edgar","filing":"0001415889-23-011084","document":"form4a-07132023_080713.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1423137/000141588923011084/form4a-07132023_080713.xml","form_type":"4/A","original_submission_date":"2023-06-16"}},{"id":1830242,"issuer":{"id":8671,"kind":"organization","name":"Trinseo PLC"},"owners":[{"id":78171,"kind":"person","name":"De Leener Pierre-Marie","position":1,"cik":"0001423137","reported_name":"De Leener Pierre-Marie","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Ordinary Shares","published_at":"2023-07-13T16:50:15.000Z","date":"2023-06-14","kind":"grant","planned":false,"acquired":true,"shares":9041,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents ordinary shares issuable pursuant to a restricted stock unit award that will vest in full on the first anniversary of the grant date."}],"balance_after":21144,"source":{"system":"sec-edgar","filing":"0001415889-23-011084","document":"form4a-07132023_080713.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1423137/000141588923011084/form4a-07132023_080713.xml","form_type":"4/A","original_submission_date":"2023-06-16"}},{"id":1851938,"issuer":{"id":8671,"kind":"organization","name":"Trinseo PLC"},"owners":[{"id":78171,"kind":"person","name":"De Leener Pierre-Marie","position":1,"cik":"0001423137","reported_name":"De Leener Pierre-Marie","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Ordinary Shares","published_at":"2023-06-16T15:16:35.000Z","date":"2023-06-14","kind":"tax_withholding","planned":false,"acquired":false,"shares":956,"price":14.38,"value":13747.28,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Shares withheld by the Company to pay taxes due following the vesting of previously granted restricted stock units."}],"balance_after":20188,"source":{"system":"sec-edgar","filing":"0001415889-23-009894","document":"form4-06162023_070631.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1423137/000141588923009894/form4-06162023_070631.xml","form_type":"4"}},{"id":1851937,"issuer":{"id":8671,"kind":"organization","name":"Trinseo PLC"},"owners":[{"id":78171,"kind":"person","name":"De Leener Pierre-Marie","position":1,"cik":"0001423137","reported_name":"De Leener Pierre-Marie","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Ordinary Shares","published_at":"2023-06-16T15:16:35.000Z","date":"2023-06-14","kind":"grant","planned":false,"acquired":true,"shares":9041,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents ordinary shares issuable pursuant to a restricted stock unit award that will vest in full on the first anniversary of the grant date."}],"balance_after":21144,"source":{"system":"sec-edgar","filing":"0001415889-23-009894","document":"form4-06162023_070631.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1423137/000141588923009894/form4-06162023_070631.xml","form_type":"4"}},{"id":2224015,"issuer":{"id":8671,"kind":"organization","name":"Trinseo PLC"},"owners":[{"id":78171,"kind":"person","name":"De Leener Pierre-Marie","position":1,"cik":"0001423137","reported_name":"De Leener Pierre-Marie","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Ordinary Shares","published_at":"2022-06-22T16:22:23.000Z","date":"2022-06-17","kind":"tax_withholding","acquired":false,"shares":1085,"price":37.43,"value":40611.55,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Shares withheld by the Company to pay taxes due following the vesting of previously granted restricted stock units."}],"balance_after":12103,"source":{"system":"sec-edgar","filing":"0001179110-22-003389","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1423137/000117911022003389/edgar.xml","form_type":"4"}},{"id":2229853,"issuer":{"id":8671,"kind":"organization","name":"Trinseo PLC"},"owners":[{"id":78171,"kind":"person","name":"De Leener Pierre-Marie","position":1,"cik":"0001423137","reported_name":"De Leener Pierre-Marie","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Ordinary Shares","published_at":"2022-06-16T18:15:06.000Z","date":"2022-06-14","kind":"grant","acquired":true,"shares":3183,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents ordinary shares issuable pursuant to a restricted stock unit award that will vest in full on the first anniversary of the grant date."}],"balance_after":13188,"source":{"system":"sec-edgar","filing":"0001179110-22-003335","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1423137/000117911022003335/edgar.xml","form_type":"4"}},{"id":2660751,"issuer":{"id":8671,"kind":"organization","name":"Trinseo PLC"},"owners":[{"id":78171,"kind":"person","name":"De Leener Pierre-Marie","position":1,"cik":"0001423137","reported_name":"De Leener Pierre-Marie","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Ordinary Shares","published_at":"2021-06-21T16:57:05.000Z","date":"2021-06-17","kind":"grant","acquired":true,"shares":2260,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents ordinary shares issuable pursuant to a restricted stock unit award that will vest in full on the first anniversary of the grant date."}],"balance_after":10005,"source":{"system":"sec-edgar","filing":"0001179110-21-006923","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1423137/000117911021006923/edgar.xml","form_type":"4"}},{"id":2670002,"issuer":{"id":8671,"kind":"organization","name":"Trinseo PLC"},"owners":[{"id":78171,"kind":"person","name":"De Leener Pierre-Marie","position":1,"cik":"0001423137","reported_name":"De Leener Pierre-Marie","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Ordinary Shares","published_at":"2021-06-14T15:10:22.000Z","date":"2021-06-11","kind":"sale","acquired":false,"shares":9339,"price":65,"value":607035.0,"ownership":{"direct":true},"balance_after":7745,"source":{"system":"sec-edgar","filing":"0001179110-21-006645","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1423137/000117911021006645/edgar.xml","form_type":"4"}},{"id":2671735,"issuer":{"id":8671,"kind":"organization","name":"Trinseo PLC"},"owners":[{"id":78171,"kind":"person","name":"De Leener Pierre-Marie","position":1,"cik":"0001423137","reported_name":"De Leener Pierre-Marie","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Ordinary Shares","published_at":"2021-06-11T15:29:05.000Z","date":"2021-06-09","kind":"tax_withholding","acquired":false,"shares":991,"price":64.87,"value":64286.17,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Shares withheld by the Company to pay taxes due following the vesting of previously granted restricted stock units."}],"balance_after":17084,"source":{"system":"sec-edgar","filing":"0001179110-21-006577","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1423137/000117911021006577/edgar.xml","form_type":"4"}},{"id":3104196,"issuer":{"id":8671,"kind":"organization","name":"Trinseo PLC"},"owners":[{"id":78171,"kind":"person","name":"De Leener Pierre-Marie","position":1,"cik":"0001423137","reported_name":"De Leener Pierre-Marie","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Ordinary Shares","published_at":"2020-06-19T14:01:10.000Z","date":"2020-06-17","kind":"tax_withholding","acquired":false,"shares":607,"price":22.29,"value":13530.03,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Shares withheld by the Company to pay taxes due following the vesting of previously granted restricted stock units."}],"balance_after":18075,"source":{"system":"sec-edgar","filing":"0001179110-20-007627","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1423137/000117911020007627/edgar.xml","form_type":"4"}},{"id":3113271,"issuer":{"id":8671,"kind":"organization","name":"Trinseo PLC"},"owners":[{"id":78171,"kind":"person","name":"De Leener Pierre-Marie","position":1,"cik":"0001423137","reported_name":"De Leener Pierre-Marie","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Ordinary Shares","published_at":"2020-06-11T16:47:50.000Z","date":"2020-06-09","kind":"grant","acquired":true,"shares":4955,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents ordinary shares issuable pursuant to a restricted stock unit award that will vest in full on the first anniversary of the grant date."}],"balance_after":18682,"source":{"system":"sec-edgar","filing":"0001179110-20-007234","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1423137/000117911020007234/edgar.xml","form_type":"4"}},{"id":3478652,"issuer":{"id":8671,"kind":"organization","name":"Trinseo PLC"},"owners":[{"id":78171,"kind":"person","name":"De Leener Pierre-Marie","position":1,"cik":"0001423137","reported_name":"De Leener Pierre-Marie","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Ordinary Shares","published_at":"2019-06-25T18:58:53.000Z","date":"2019-06-21","kind":"tax_withholding","acquired":false,"shares":339,"price":40.85,"value":13848.15,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Shares withheld by the Company to pay taxes due following the vesting of previously granted restricted stock units."}],"balance_after":13727,"source":{"system":"sec-edgar","filing":"0001179110-19-008114","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1423137/000117911019008114/edgar.xml","form_type":"4"}},{"id":3486015,"issuer":{"id":8671,"kind":"organization","name":"Trinseo PLC"},"owners":[{"id":78171,"kind":"person","name":"De Leener Pierre-Marie","position":1,"cik":"0001423137","reported_name":"De Leener Pierre-Marie","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Ordinary Shares","published_at":"2019-06-18T11:38:21.000Z","date":"2019-06-17","kind":"grant","acquired":true,"shares":3034,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents ordinary shares issuable pursuant to a restricted stock unit award that will vest in full on the first anniversary of the grant date."}],"balance_after":14067,"source":{"system":"sec-edgar","filing":"0001179110-19-007809","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1423137/000117911019007809/edgar.xml","form_type":"4"}},{"id":3884005,"issuer":{"id":8671,"kind":"organization","name":"Trinseo PLC"},"owners":[{"id":78171,"kind":"person","name":"De Leener Pierre-Marie","position":1,"cik":"0001423137","reported_name":"De Leener Pierre-Marie","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Ordinary Shares","published_at":"2018-06-25T17:09:31.000Z","date":"2018-06-22","kind":"tax_withholding","acquired":false,"shares":362,"price":71.4,"value":25846.8,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Shares withheld by the Company to pay taxes due following the vesting of previously granted restricted stock units."}],"balance_after":11033,"source":{"system":"sec-edgar","filing":"0001179110-18-009010","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1423137/000117911018009010/edgar.xml","form_type":"4"}},{"id":3884004,"issuer":{"id":8671,"kind":"organization","name":"Trinseo PLC"},"owners":[{"id":78171,"kind":"person","name":"De Leener Pierre-Marie","position":1,"cik":"0001423137","reported_name":"De Leener Pierre-Marie","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Ordinary Shares","published_at":"2018-06-25T17:09:31.000Z","date":"2018-06-21","kind":"grant","acquired":true,"shares":1694,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents ordinary shares issuable pursuant to a restricted stock unit award that will vest in full on the first anniversary of the grant date."}],"balance_after":11395,"source":{"system":"sec-edgar","filing":"0001179110-18-009010","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1423137/000117911018009010/edgar.xml","form_type":"4"}},{"id":4273442,"issuer":{"id":8671,"kind":"organization","name":"Trinseo PLC"},"owners":[{"id":78171,"kind":"person","name":"De Leener Pierre-Marie","position":1,"cik":"0001423137","reported_name":"De Leener Pierre-Marie","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Ordinary Shares","published_at":"2017-06-23T17:53:46.000Z","date":"2017-06-22","kind":"grant","acquired":true,"shares":1807,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Represents ordinary shares issuable pursuant to a restricted stock unit award that will vest in full on the first anniversary of the grant date."}],"balance_after":9701,"source":{"system":"sec-edgar","filing":"0001179110-17-009532","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1423137/000117911017009532/edgar.xml","form_type":"4"}},{"id":4273441,"issuer":{"id":8671,"kind":"organization","name":"Trinseo PLC"},"owners":[{"id":78171,"kind":"person","name":"De Leener Pierre-Marie","position":1,"cik":"0001423137","reported_name":"De Leener Pierre-Marie","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Ordinary Shares","published_at":"2017-06-23T17:53:46.000Z","date":"2017-06-22","kind":"tax_withholding","acquired":false,"shares":380,"price":66.4,"value":25232.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Shares withheld by the Company to pay taxes due following expiration of the applicable restriction period of previously granted restricted stock units."}],"balance_after":7894,"source":{"system":"sec-edgar","filing":"0001179110-17-009532","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1423137/000117911017009532/edgar.xml","form_type":"4"}},{"id":4394728,"issuer":{"id":8671,"kind":"organization","name":"Trinseo PLC"},"owners":[{"id":78171,"kind":"person","name":"De Leener Pierre-Marie","position":1,"cik":"0001423137","reported_name":"De Leener Pierre-Marie","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Ordinary Shares","published_at":"2017-03-08T17:40:32.000Z","date":"2017-03-07","kind":"sale","acquired":false,"shares":10000,"price":70.7658,"value":707658.0,"ownership":{"direct":false,"nature":"By family company"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Represents the weighted average sale price for price increments ranging from $70.75 to $70.825, 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."}],"balance_after":0,"source":{"system":"sec-edgar","filing":"0001179110-17-004267","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1423137/000117911017004267/edgar.xml","form_type":"4"}}]}