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New Director Micheal G. Dunn Files Initial Ownership Report (Form 3) for MPLX LP

Low SignificanceNovember 2, 2026 at 5:13:20 PM EST

MPLX LP

$MPLX3CIK: 0001552000

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Filing Summary

📋 Initial Statement of Beneficial Ownership (Form 3) Company: MPLX LP ($MPLX) Insider: Micheal G. Dunn Title: Director Event Date: November 1, 2026 Shares Held: 0 Common Units Significance: Low

Comprehensive Analysis

Executive Summary

On November 2, 2026, Micheal G. Dunn filed an initial statement of beneficial ownership on Form 3 with the SEC concerning MPLX LP (NYSE: MPLX). The filing establishes an effective event date of November 1, 2026, coinciding with his appointment as a Director of MPLX GP LLC, the general partner of MPLX LP.

Ownership & Holdings Details

  • Security: Common Units (Limited Partner Interests)
  • Direct Ownership: 0 units
  • Indirect Ownership: 0 units
  • Derivative Holdings: None reported

At the time of becoming an insider, Mr. Dunn reports no direct or indirect beneficial ownership in MPLX common units or related derivative securities.

Market Impact & Significance

This filing is administrative in nature, representing a standard Section 16 compliance disclosure upon joining the board of directors of the general partner. Because no transactions took place and zero securities are currently owned, this filing holds Low immediate trading significance. Investors should monitor future Form 4 filings for any subsequent equity grants or open-market purchases by the director.

Topics:#MPLX#SECForm3#InsiderOwnership#EnergySector#CorporateGovernance

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