| SC 13G/A | 2024-02-06 | BlackRock Inc. | Trinseo PLC | 2,638,164 | 7.5% | EDGAR |
| SC 13G/A | 2023-10-06 | BlackRock Inc. | Trinseo PLC | 2,636,554 | 7.5% | EDGAR |
| SC 13G/A | 2023-02-09 | FMR LLC | Trinseo PLC | 460,210 | 1.3% | EDGAR |
| SC 13G/A | 2023-01-23 | BlackRock Inc. | Trinseo PLC | 5,811,878 | 16.6% | EDGAR |
| SC 13D | 2022-08-12 | M&G INVESTMENT MANAGEMENT LTD | Trinseo PLC | 7,625,044 | 21.8% | EDGAR |
| SC 13D | 2022-05-10 | M&G INVESTMENT MANAGEMENT LTD | Trinseo PLC | 7,628,044 | 21.1% | EDGAR |
| SC 13G | 2022-02-14 | ALLIANCEBERNSTEIN L.P. | Trinseo PLC | 0 | 0.0% | EDGAR |
| SC 13G | 2022-02-09 | FMR LLC | Trinseo PLC | 2,533,469 | 6.5% | EDGAR |
| SC 13G/A | 2022-01-27 | BlackRock Inc. | Trinseo PLC | 6,252,810 | 16.1% | EDGAR |
| SC 13G | 2022-01-26 | BlackRock Inc. | Trinseo PLC | 6,252,810 | 16.1% | EDGAR |
| SC 13G | 2021-12-10 | BlackRock Inc. | Trinseo PLC | 6,239,313 | 16.1% | EDGAR |
| SC 13G/A | 2021-02-11 | LSV ASSET MANAGEMENT | Trinseo S.A. | 1,471,516 | 3.8% | EDGAR |
| SC 13G/A | 2021-02-08 | ALLIANCEBERNSTEIN L.P. | Trinseo S.A. | 2,453,863 | 6.4% | EDGAR |
| SC 13G/A | 2021-01-25 | BlackRock Inc. | Trinseo S.A. | 6,493,523 | 17.0% | EDGAR |
| SC 13G | 2020-02-18 | ALLIANCEBERNSTEIN L.P. | Trinseo S.A. | 2,056,279 | 5.2% | EDGAR |
| SC 13G | 2020-02-11 | LSV ASSET MANAGEMENT | Trinseo S.A. | 2,339,025 | 6.0% | EDGAR |
| SC 13D | 2020-02-07 | M&G INVESTMENT MANAGEMENT LTD | Trinseo S.A. | 7,839,044 | 20.1% | EDGAR |
| SC 13G/A | 2020-02-04 | BlackRock Inc. | Trinseo S.A. | 6,098,644 | 15.6% | EDGAR |
| SC 13G/A | 2020-01-30 | M&G INVESTMENT MANAGEMENT LTD | Trinseo S.A. | 7,839,044 | 16.1% | EDGAR |
| SC 13G/A | 2019-09-10 | BlackRock Inc. | Trinseo S.A. | 6,086,170 | 15.1% | EDGAR |