AI English summary of an SEC filing — figures as filed

Marathon Petroleum said on October October 28, 2026 that its board increased the board size to 11 members and elected David E. Constable as a director, with the increase and election effective as of March 1, 2027.

8-KDeparture or Appointment of Directors or Certain OfficersFiled Oct 29, 2026Period of report Oct 28, 2026Summary published (UTC) Oct 29, 2026

Key points

AI summary

Marathon Petroleum said on October October 28, 2026 that its board increased the board size to 11 members and elected David E. Constable as a director, with the increase and election effective as of March 1, 2027.
The company said Constable was assigned to the Compensation and Organization Development Committee and the Sustainability and Public Policy Committee, with both committee assignments also effective as of March 1, 2027.
It said Constable, as a non-employee director, will receive the same compensation as the company's other non-employee directors, as described in the proxy statement on Schedule 14A filed with the SEC on March 16, 2026.
Marathon Petroleum said in a press release that Constable served as Chairman and CEO of Fluor Corporation, led Sasol Ltd. from 2011 to 2016, and currently serves on the board of ABB Ltd.

Summary

AI-written

Analysis scope · Filing body and confirmed press-release exhibitWe analyzed the filing body and confirmed exhibits. This is not a review of other exhibits, investor presentations or the full earnings call.

Board Expanded to 11 Members; David E. Constable Elected

Marathon Petroleum said on October October 28, 2026 that its board increased the board size to 11 members and elected David E. Constable as a director, with the increase and election effective as of March 1, 2027.

Source · Based on the filing body and exhibits

Constable Assigned to Board Committees

The company said Constable was assigned to the Compensation and Organization Development Committee and the Sustainability and Public Policy Committee, with both committee assignments also effective as of March 1, 2027.

Source · Based on the filing body and exhibits

Non-Employee Director Compensation Terms

It said Constable, as a non-employee director, will receive the same compensation as the company's other non-employee directors, as described in the proxy statement on Schedule 14A filed with the SEC on March 16, 2026.

Source · Based on the filing body and exhibits

Constable's Professional Background

Marathon Petroleum said in a press release that Constable served as Chairman and CEO of Fluor Corporation, led Sasol Ltd. from 2011 to 2016, and currently serves on the board of ABB Ltd.

Source · Based on the filing body and exhibits

AI summarized the filing and translated the summary into English; it may differ from the original. For reference only, not investment advice. AI translated the published Korean report into English. Figures are copied as filed, not recalculated.

Original filing

The filing as submitted to SEC EDGAR. You can check the figures and statements of this summary against it.

View the original filing on SEC EDGAR ↗

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