| Date | Name | Symbol | Type | Security | Shares | Price | Value | Ownership | Reported |
| 04/01/2021 | MPLX LP | MPLX | Grant | Common Units (Limited Partner Interests) | 231.392 | $0.00 | $0 | | 04/01/2021 |
| 02/12/2021 | MPLX LP | MPLX | Grant | Common Units (Limited Partner Interests) | 655.623 | $0.00 | $0 | | 02/12/2021 |
| 01/04/2021 | MPLX LP | MPLX | Grant | Common Units (Limited Partner Interests) | 1.3k | $0.00 | $0 | | 01/04/2021 |
| 11/13/2020 | MPLX LP | MPLX | Grant | Common Units (Limited Partner Interests) | 741.923 | $0.00 | $0 | | 11/13/2020 |
| 10/01/2020 | MPLX LP | MPLX | Grant | Common Units (Limited Partner Interests) | 1.8k | $0.00 | $0 | | 10/01/2020 |
| 08/14/2020 | MPLX LP | MPLX | Grant | Common Units (Limited Partner Interests) | 661.795 | $0.00 | $0 | | 08/14/2020 |
| 07/01/2020 | MPLX LP | MPLX | Grant | Common Units (Limited Partner Interests) | 1.6k | $0.00 | $0 | | 07/01/2020 |
| 05/15/2020 | MPLX LP | MPLX | Grant | Common Units (Limited Partner Interests) | 636.993 | $0.00 | $0 | | 05/15/2020 |
| 04/01/2020 | MPLX LP | MPLX | Grant | Common Units (Limited Partner Interests) | 2.4k | $0.00 | $0 | | 04/01/2020 |
| 02/14/2020 | MPLX LP | MPLX | Grant | Common Units (Limited Partner Interests) | 400.809 | $0.00 | $0 | | 02/14/2020 |
| 01/02/2020 | MPLX LP | MPLX | Grant | Common Units (Limited Partner Interests) | 1.1k | $0.00 | $0 | | 01/02/2020 |
| 11/14/2019 | MPLX LP | MPLX | Grant | Common Units (Limited Partner Interests) | 363.857 | $0.00 | $0 | | 11/14/2019 |
| 10/01/2019 | MPLX LP | MPLX | Grant | Common Units (Limited Partner Interests) | 975.523 | $0.00 | $0 | | 10/01/2019 |
| 08/14/2019 | MPLX LP | MPLX | Grant | Common Units (Limited Partner Interests) | 285.278 | $0.00 | $0 | | 08/14/2019 |
| 07/01/2019 | MPLX LP | MPLX | Grant | Common Units (Limited Partner Interests) | 852.449 | $0.00 | $0 | | 07/01/2019 |
| 05/15/2019 | MPLX LP | MPLX | Grant | Common Units (Limited Partner Interests) | 214.63 | $0.00 | $0 | | 05/15/2019 |
| 04/01/2019 | MPLX LP | MPLX | Grant | Common Units (Limited Partner Interests) | 827.565 | $0.00 | $0 | | 04/01/2019 |
| 02/14/2019 | MPLX LP | MPLX | Grant | Common Units (Limited Partner Interests) | 174.927 | $0.00 | $0 | | 02/14/2019 |
| 01/02/2019 | MPLX LP | MPLX | Grant | Common Units (Limited Partner Interests) | 895.474 | $0.00 | $0 | | 01/02/2019 |
| 11/14/2018 | MPLX LP | MPLX | Grant | Common Units (Limited Partner Interests) | 162.989 | $0.00 | $0 | | 11/14/2018 |
| 10/01/2018 | MPLX LP | MPLX | Grant | Common Units (Limited Partner Interests) | 619.513 | $0.00 | $0 | | 10/01/2018 |
| 08/14/2018 | MPLX LP | MPLX | Grant | Common Units (Limited Partner Interests) | 123.671 | $0.00 | $0 | | 08/14/2018 |
| 07/02/2018 | MPLX LP | MPLX | Grant | Common Units (Limited Partner Interests) | 645.471 | $0.00 | $0 | | 07/02/2018 |
| 05/15/2018 | MPLX LP | MPLX | Grant | Common Units (Limited Partner Interests) | 117.932 | $0.00 | $0 | | 05/15/2018 |
| 04/02/2018 | MPLX LP | MPLX | Grant | Common Units (Limited Partner Interests) | 669.78 | $0.00 | $0 | | 04/02/2018 |
| 02/14/2018 | MPLX LP | MPLX | Grant | Common Units (Limited Partner Interests) | 98.569 | $0.00 | $0 | | 02/14/2018 |
| 01/02/2018 | MPLX LP | MPLX | Grant | Common Units (Limited Partner Interests) | 606.964 | $0.00 | $0 | | 01/02/2018 |
| 11/14/2017 | MPLX LP | MPLX | Grant | Common Units (Limited Partner Interests) | 90.882 | $0.00 | $0 | | 11/14/2017 |
| 08/14/2017 | MPLX LP | MPLX | Grant | Common Units (Limited Partner Interests) | 75.728 | $0.00 | $0 | | 08/14/2017 |
| 07/03/2017 | MPLX LP | MPLX | Grant | Common Units (Limited Partner Interests) | 638.873 | $0.00 | $0 | | 07/03/2017 |
| 05/15/2017 | MPLX LP | MPLX | Grant | Common Units (Limited Partner Interests) | 57.661 | $0.00 | $0 | | 05/15/2017 |
| 04/03/2017 | MPLX LP | MPLX | Grant | Common Units (Limited Partner Interests) | 600.302 | $0.00 | $0 | | 04/03/2017 |
| 02/14/2017 | MPLX LP | MPLX | Grant | Common Units (Limited Partner Interests) | 42.661 | $0.00 | $0 | | 02/14/2017 |
| 01/03/2017 | MPLX LP | MPLX | Grant | Common Units (Limited Partner Interests) | 621.449 | $0.00 | $0 | | 01/03/2017 |
| 11/14/2016 | MPLX LP | MPLX | Grant | Common Units (Limited Partner Interests) | 39.949 | $0.00 | $0 | | 11/14/2016 |
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