| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| FARRELL MATTHEW | Director | C/O TRINSEO PLC, 440 EAST SWEDESFORD ROAD, SUITE 301, WAYNE | /s/ Angelo Chaclas, Attorney-in-Fact | 14 Aug 2025 | 0001196053 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | TSE | Ordinary Shares | Purchase | $57,250 | +25,000 | +17% | $2.29 | 175,225 | 12 Aug 2025 | Direct | F1 |
| transaction | TSE | Ordinary Shares | Purchase | $64,657 | +26,391 | +15% | $2.45 | 201,616 | 13 Aug 2025 | Direct | F2 |
| transaction | TSE | Ordinary Shares | Purchase | $118,119 | +48,609 | +24% | $2.43 | 250,225 | 14 Aug 2025 | Direct | F3 |
| Id | Content |
|---|---|
| F1 | Price reflects the weighted average purchase price for the purchase transaction made on the date reported above. Purchase prices ranged from $2.26 to $2.32. The reporting person will provide, upon request by the Staff, the Company, or a security holder of the Company, full information regarding the number of shares purchased at each separate price. |
| F2 | Price reflects the weighted average purchase price for the purchase transaction made on the date reported above. Purchase prices ranged from $2.36 to $2.50. The reporting person will provide, upon request by the Staff, the Company, or a security holder of the Company, full information regarding the number of shares purchased at each separate price. |
| F3 | Price reflects the weighted average purchase price for the purchase transaction made on the date reported above. Purchase prices ranged from $2.38 to $2.46. The reporting person will provide, upon request by the Staff, the Company, or a security holder of the Company, full information regarding the number of shares purchased at each separate price |