Trinseo S.A. (TSE) has 149 open-market insider trades by 34 insiders since 2015. The most active filer is M&g Investment Management Ltd., 10% Owner.
| Name | Title | Tier | Trades | Value | Last Trade |
|---|---|---|---|---|---|
| Stephen M. Zide | Dir | — | 5 | $2.3B | 2020-06-17 |
| Stephen F. Thomas | Dir10% Owner | — | 4 | $2.3B | 2016-09-23 |
| Michel Plantevin | Dir10% Owner | — | 4 | $2.3B | 2016-09-23 |
| Ruth Springham | Dir10% Owner | — | 1 | $1.2B | 2016-09-23 |
| Aurelien Vasseur | Dir10% Owner | — | 3 | $1.1B | 2016-08-12 |
| Felix Hauser | Dir10% Owner | — | 3 | $1.1B | 2016-08-12 |
| Bain Capital Fund X LP | 10% Owner | — | 1 | $576.7M | 2016-09-23 |
| BAIN Capital Investors LLC | 10% Owner | — | 1 | $576.7M | 2016-09-23 |
| M&g Investment Management Ltd. | 10% Owner | — | 47 | $39.2M | 2022-07-19 |
| Christopher D. Pappas | Dir | — | 17 | $22.4M | 2020-06-17 |
| Insider | Title | Type | Value | Date |
|---|---|---|---|---|
| Matthew Farrell | Director | Buy | $423K | 2025-08-12 |
| Johanna Frisch | Treasurer | Buy | $16K | 2025-03-12 |
| Jeffrey J. Cote | Director | Buy | $453K | 2024-08-16 |
| Mark E. Tomkins | Director | Sell | $28K | 2024-08-13 |
| Angelo N. Chaclas | CLO & CCO +2 | Buy | $193K | 2024-08-12 |
| Frank A. Bozich | CEO & President | Buy | $103K | 2024-08-12 |
Companies that share insiders with TSE, and sector peers with recent insider buying. Related by who files, not by how the stocks move.
| Matthew Farrell | Director | Buy | $361K | 2023-12-14 |
| David Phillip Stasse | CFO & VP | Buy | $133K | 2023-09-14 |
| Jeanmarie F. Desmond | Director | Buy | $20K | 2023-09-13 |
| Timothy J. Thomas | SVP & MFCTG & OPER EXCELLENCE | Buy | $24K | 2023-09-12 |
| Angelo N. Chaclas | CLO & CCO +2 | Buy | $161K | 2023-09-12 |
| Frank A. Bozich | CEO & President | Buy | $65K | 2023-09-12 |
| Philip R. Martens | Director | Sell | $170K | 2022-11-16 |
| Jeanmarie F. Desmond | Director | Buy | $177K | 2022-09-07 |
| Jeffrey J. Cote | Director | Buy | $318K | 2022-08-15 |