| Date | Name | Title | Type | Security | Shares | Price | Value | Ownership | Reported |
| 08/22/2023 | Kenner Andrew | SVP, Olefin Material & Corp Pr | Purchase | Common Units | 11.8k | $22.30 | $262.3k | | 08/22/2023 |
| 08/21/2023 | Kenner Andrew | SVP, Olefin Material & Corp Pr | Purchase | Common Units | 643 | $22.11 | $14.2k | | 08/21/2023 |
| 08/17/2023 | Kenner Andrew | SVP, Olefin Material & Corp Pr | Purchase | Common Units | 5k | $22.08 | $110.4k | | 08/17/2023 |
| 08/16/2023 | Kenner Andrew | SVP, Olefin Material & Corp Pr | Purchase | Common Units | 3.3k | $22.23 | $74.4k | | 08/15/2023 |
| 08/15/2023 | Kenner Andrew | SVP, Olefin Material & Corp Pr | Purchase | Common Units | 855 | $22.00 | $18.8k | | 08/15/2023 |
| 08/10/2023 | WOELFEL RANDY | Director | Disposition | Common Units | 2.1k | $22.47 | $46.9k | | 08/09/2023 |
| 08/10/2023 | WOELFEL RANDY | Director | Exercise | Phantom Units | 4.2k | $0.00 | $0 | | 08/09/2023 |
| 08/10/2023 | FINLEY G STEPHEN | Director | Exercise | Phantom Units | 4.2k | $0.00 | $0 | | 08/09/2023 |
| 08/10/2023 | Kenner Andrew | SVP, Olefin Material & Corp Pr | Purchase | Common Units | 5k | $22.55 | $112.8k | | 08/09/2023 |
| 08/09/2023 | Kenner Andrew | SVP, Olefin Material & Corp Pr | Purchase | Common Units | 5k | $23.00 | $115k | | 08/09/2023 |
| 08/09/2023 | Friel Lisa A. | Director | Grant | Phantom Units | 4.6k | $0.00 | $0 | | 08/09/2023 |
| 08/09/2023 | FINLEY G STEPHEN | Director | Grant | Phantom Units | 4.6k | $0.00 | $0 | | 08/09/2023 |
| 08/09/2023 | WOELFEL RANDY | Director | Grant | Phantom Units | 4.6k | $0.00 | $0 | | 08/09/2023 |
| 08/07/2023 | Kenner Andrew | SVP, Olefin Material & Corp Pr | Purchase | Common Units | 5k | $23.00 | $115k | | 08/07/2023 |
| 05/10/2023 | Friel Lisa A. | Director | Grant | Phantom Units | 4.9k | $0.00 | $0 | | 05/10/2023 |
| 03/13/2023 | Kenner Andrew | SVP, Olefin Material & Corp Pr | Purchase | Common Units | 5k | $21.44 | $107.2k | | 03/13/2023 |
| 03/10/2023 | Kenner Andrew | SVP, Olefin Material & Corp Pr | Purchase | Common Units | 10k | $22.02 | $220.2k | | 03/10/2023 |
| 11/15/2022 | Kenner Andrew | SVP, Olefin Material & Corp Pr | Purchase | Common Units | 4.4k | $22.97 | $100.2k | | 11/15/2022 |
| 11/10/2022 | Kenner Andrew | SVP, Olefin Material & Corp Pr | Purchase | Common Units | 5.6k | $22.98 | $129.6k | | 11/10/2022 |
| 08/11/2022 | WOELFEL RANDY | Director | Exercise | Phantom Units | 3.7k | $0.00 | $0 | | 08/10/2022 |
| 08/11/2022 | Minas Angela A | Director | Disposition | Common Units | 1.9k | $25.42 | $47.4k | | 08/10/2022 |
| 08/11/2022 | Minas Angela A | Director | Exercise | Phantom Units | 3.7k | $0.00 | $0 | | 08/10/2022 |
| 08/11/2022 | WOELFEL RANDY | Director | Disposition | Common Units | 1.9k | $25.42 | $47.4k | | 08/10/2022 |
| 08/10/2022 | WOELFEL RANDY | Director | Grant | Phantom Units | 4.2k | $0.00 | $0 | | 08/10/2022 |
| 08/10/2022 | Minas Angela A | Director | Grant | Phantom Units | 4.2k | $0.00 | $0 | | 08/10/2022 |
| 06/09/2022 | Chao James | Chairman | Gift | Common Units | 10k | $0.00 | $0 | | 06/09/2022 |
| 05/31/2022 | Chao James | Chairman | Sale | Common Units | 29.1k | $26.87 | $781.6k | | 05/31/2022 |
| 05/31/2022 | Chao James | Chairman | Sale | Common Units | 2k | $27.54 | $55.1k | | 05/31/2022 |
| 03/08/2022 | Kenner Andrew | SVP, Olefin Material & Corp Pr | Purchase | Common Units | 10k | $26.34 | $263.4k | | 03/08/2022 |
| 03/07/2022 | Kenner Andrew | SVP, Olefin Material & Corp Pr | Purchase | Common Units | 8k | $26.15 | $209.2k | | 03/07/2022 |
| 08/12/2021 | WOELFEL RANDY | Director | Exercise | Phantom Units | 4.9k | $0.00 | $0 | | 08/11/2021 |
| 08/12/2021 | Minas Angela A | Director | Disposition | Common Units | 2.5k | $26.60 | $65.5k | | 08/11/2021 |
| 08/12/2021 | Minas Angela A | Director | Exercise | Phantom Units | 4.9k | $0.00 | $0 | | 08/11/2021 |
| 08/12/2021 | WOELFEL RANDY | Director | Disposition | Common Units | 2.5k | $26.60 | $65.5k | | 08/11/2021 |
| 08/11/2021 | WOELFEL RANDY | Director | Grant | Phantom Units | 3.7k | $0.00 | $0 | | 08/11/2021 |
|