MPLX LP (MPLX) Insider Trading -- Recent Executive & Director Transactions

15 insiders reported 105 Form 4 transactions for MPLX LP (MPLX) over the past 18 months (most recent 2026-05-19). Recent activity: SURMA JOHN P (Director) Buy 1,656 shares, Peiffer Garry L. (Director) Buy 1,304 shares, SEMPLE FRANK M (Director) Buy 1,194 shares, Walker Ray N JR (Director) Buy 78 shares, STICE J MICHAEL (Director) Buy 1,098 shares. Source: SEC Form 4.

DateInsiderTitleTypeSharesValue
2026-05-19SURMA JOHN PDirectorBuy1,656$0
2026-05-19Peiffer Garry L.DirectorBuy1,304$0
2026-05-19SEMPLE FRANK MDirectorBuy1,194$0
2026-05-19Walker Ray N JRDirectorBuy78$0
2026-05-19STICE J MICHAELDirectorBuy1,098$0
2026-05-19HELMS CHRISTOPHER ADirectorBuy1,415$0
2026-05-19Breves Christine SDirectorBuy277$0
2026-03-03Benson Molly RChief Legal Ofc & Corp SecBuy8,803$0
2026-03-03Benson Molly RChief Legal Ofc & Corp SecSell614$36,361
2026-03-03Benson Molly RChief Legal Ofc & Corp SecSell1,240$73,433
2026-03-03Benson Molly RChief Legal Ofc & Corp SecSell998$59,102
2026-03-03Mannen Maryann T.Chairman, President & CEOBuy52,817$0
2026-03-03HAGEDORN CARL KRISTOPHERExec VP & Chief Fin OfcBuy4,930$0
2026-03-03Mannen Maryann T.Chairman, President & CEOSell3,404$201,585
2026-03-03Mannen Maryann T.Chairman, President & CEOSell6,409$379,541
2026-03-03Lyon Shawn MSenior VP, Log. & StorageBuy5,986$0
2026-03-03Lyon Shawn MSenior VP, Log. & StorageSell920$54,482
2026-03-03Lyon Shawn MSenior VP, Log. & StorageSell1,033$61,174
2026-03-03Lyon Shawn MSenior VP, Log. & StorageSell798$47,258
2026-03-03Mannen Maryann T.Chairman, President & CEOSell3,407$201,763
2026-03-03Floerke Gregory ScottExec. VP and COOBuy5,986$0
2026-03-03Floerke Gregory ScottExec. VP and COOSell995$58,924
2026-03-03Floerke Gregory ScottExec. VP and COOSell1,100$65,142
2026-03-03Floerke Gregory ScottExec. VP and COOSell797$47,198
2026-03-03Khoury Maria ADirectorBuy8,451$0

Source: SEC Form 4 filings · as of 2026-05-19