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

15 insiders reported 120 Form 4 transactions for MPLX LP (MPLX) over the past 18 months (most recent 2026-08-18). Recent activity: SURMA JOHN P (Director) Buy 1,563 shares, HELMS CHRISTOPHER A (Director) Buy 1,337 shares, SEMPLE FRANK M (Director) Buy 1,073 shares, Walker Ray N JR (Director) Buy 82 shares, STICE J MICHAEL (Director) Buy 983 shares. Source: SEC Form 4.

DateInsiderTitleTypeSharesValue
2026-08-18SURMA JOHN PDirectorBuy1,563$0
2026-08-18HELMS CHRISTOPHER ADirectorBuy1,337$0
2026-08-18SEMPLE FRANK MDirectorBuy1,073$0
2026-08-18Walker Ray N JRDirectorBuy82$0
2026-08-18STICE J MICHAELDirectorBuy983$0
2026-08-18Peiffer Garry L.DirectorBuy1,232$0
2026-08-18Breves Christine SDirectorBuy219$0
2026-08-05Peiffer Garry L.DirectorBuy2,696$0
2026-08-05SURMA JOHN PDirectorBuy3,029$0
2026-08-05SEMPLE FRANK MDirectorBuy3,029$0
2026-08-05Walker Ray N JRDirectorBuy2,696$0
2026-08-05STICE J MICHAELDirectorBuy3,029$0
2026-08-05HELMS CHRISTOPHER ADirectorBuy2,696$0
2026-08-05Breves Christine SDirectorBuy2,696$0
2026-05-19HELMS CHRISTOPHER ADirectorBuy1,415$0
2026-05-19SURMA JOHN PDirectorBuy1,656$0
2026-05-19SEMPLE FRANK MDirectorBuy1,194$0
2026-05-19Walker Ray N JRDirectorBuy78$0
2026-05-19STICE J MICHAELDirectorBuy1,098$0
2026-05-19Breves Christine SDirectorBuy277$0
2026-05-19Peiffer Garry L.DirectorBuy1,304$0
2026-05-04Walker Ray N JRDirectorBuy2,247$0
2026-05-04HELMS CHRISTOPHER ADirectorBuy2,247$0
2026-05-04SURMA JOHN PDirectorBuy2,580$0
2026-05-04SEMPLE FRANK MDirectorBuy2,580$0

Source: SEC Form 4 filings · as of 2026-08-18