| SC 13G/A | 2017-02-14 | TORTOISE CAPITAL ADVISORS, L.L.C. | MPLX LP | 18,894,274 | 5.4% | EDGAR |
| SC 13G/A | 2017-01-26 | ALPS ADVISORS INC | MPLX LP | 18,146,214 | 5.2% | EDGAR |
| SC 13D/A | 2016-04-04 | Marathon Petroleum Corp | MPLX LP | 79,466,136 | 24.0% | EDGAR |
| SC 13G/A | 2016-02-09 | TORTOISE CAPITAL ADVISORS, L.L.C. | MPLX LP | 18,870,094 | 6.4% | EDGAR |
| SC 13G | 2016-02-03 | ALPS ADVISORS INC | MPLX LP | 16,813,973 | 5.7% | EDGAR |
| SC 13D/A | 2015-12-07 | Marathon Petroleum Corp | MPLX LP | 56,932,134 | 19.2% | EDGAR |
| SC 13D | 2015-11-18 | MPLX LP | MARKWEST ENERGY PARTNERS L P | 29,990,141 | 15.2% | EDGAR |
| SC 13G/A | 2015-11-10 | TORTOISE CAPITAL ADVISORS, L.L.C. | MPLX LP | 4,565,425 | 5.7% | EDGAR |
| SC 13D/A | 2015-08-19 | Marathon Petroleum Corp | MPLX LP | 56,932,134 | 70.9% | EDGAR |
| SC 13G/A | 2015-02-13 | FMR LLC | MPLX LP | 2,093,343 | 4.8% | EDGAR |
| SC 13G/A | 2015-02-10 | TORTOISE CAPITAL ADVISORS, L.L.C. | MPLX LP | 5,458,833 | 12.6% | EDGAR |
| SC 13D/A | 2014-12-12 | Marathon Petroleum Corp | MPLX LP | 56,932,134 | 70.9% | EDGAR |
| SC 13D | 2014-12-03 | Marathon Petroleum Corp | MPLX LP | 56,932,134 | 77.0% | EDGAR |
| SC 13G | 2014-02-14 | FMR LLC | MPLX LP | 2,168,257 | 5.9% | EDGAR |
| SC 13G/A | 2014-02-13 | Marathon Petroleum Corp | MPLX LP | 54,008,030 | 73.1% | EDGAR |
| SC 13G | 2014-02-11 | TORTOISE CAPITAL ADVISORS, L.L.C. | MPLX LP | 5,383,929 | 14.6% | EDGAR |
| SC 13G | 2013-04-05 | TORTOISE CAPITAL ADVISORS, L.L.C. | MPLX LP | 4,016,686 | 10.9% | EDGAR |
| SC 13G | 2013-02-12 | TORTOISE CAPITAL ADVISORS, L.L.C. | MPLX LP | 2,890,938 | 7.8% | EDGAR |
| SC 13G | 2013-02-11 | Marathon Petroleum Corp | MPLX LP | 54,008,030 | 71.6% | EDGAR |