Micheal G. Dunn, a newly appointed director of MPLX GP LLC, filed a Form 3 initial statement of beneficial ownership with the SEC on November 2, 2026, reporting zero directly held Common Units of MPLX LP as of the triggering event date of November 1, 2026.

Key Highlights

  • Reporting person: Micheal G. Dunn, identified as a Director of MPLX GP LLC, the general partner of MPLX LP (NYSE:MPLX).
  • Event date: The date of the event requiring the statement was November 1, 2026.
  • Direct holdings: Dunn reported 0 Common Units (Limited Partner Interests) held directly.
  • No derivative securities: Table II of the filing lists no derivative securities beneficially owned.
  • Filing agent: The form was signed by Molly R. Benson as Attorney-in-Fact for Micheal G. Dunn on November 2, 2026.
  • Role clarification: According to the filing, Dunn is a Director of MPLX GP LLC, and "the Issuer is managed by the directors and executive officers of MPLX GP LLC."

Dunn's Initial Beneficial Ownership Position at MPLX LP

According to the filing, Micheal G. Dunn submitted a Form 3 - Initial Statement of Beneficial Ownership of Securities - in connection with his role as a Director of MPLX GP LLC, the general partner of MPLX LP. The triggering event date is listed as November 1, 2026, and the form was filed the following day, November 2, 2026. The filing was submitted pursuant to Section 16(a) of the Securities Exchange Act of 1934.

In Table I, the filing reports that Dunn directly owns 0 Common Units (Limited Partner Interests) of MPLX LP. No indirect holdings are listed. Table II, covering derivative securities such as options, warrants, or convertible securities, is empty, meaning no derivative positions were reported. The filing includes a remark noting that a Power of Attorney (Exhibit 24) was filed alongside the form, and that the form was executed by Molly R. Benson as Attorney-in-Fact.

The filing notes that Dunn's reporting obligation arises from his directorship at MPLX GP LLC. As stated in the exhibit remarks, "The Reporting Person is a Director of MPLX GP LLC, the general partner of the Issuer. The Issuer is managed by the directors and executive officers of MPLX GP LLC." Dunn's address of record is listed as c/o MPLX LP, 200 E. Hardin Street, Findlay, Ohio 45840.

What Was Disclosed

Micheal G. Dunn filed a Form 3 disclosing his initial beneficial ownership of MPLX LP securities upon becoming a Director of MPLX GP LLC. As of November 1, 2026, he reported holding zero Common Units directly and no derivative securities.