Erin M. Brzezinski - 01 Apr 2026 Form 3 Insider Report for MPLX LP (MPLX)

Reporting relationship: VP and Controller
Issuer ticker: MPLX
Reported as of: 01 Apr 2026
Net transaction value: $0
SEC form: 3
Accepted by SEC: 02 Apr 2026, 16:35:27 UTC
Prior SEC filing: 03 Mar 2026
Source filing: View source filing
Reporting owner signature: /s/ Molly R. Benson, Attorney-in-Fact for Erin M. Brzezinski

Key filing fact

Erin M. Brzezinski filed Form 3 for MPLX LP (MPLX) on 02 Apr 2026.

Key facts

This page summarizes Erin M. Brzezinski's Form 3 filing for MPLX LP (MPLX).
0 reported transactions and 0 derivative rows are listed below.
Accepted by SEC: 02 Apr 2026, 16:35.

Change

Previous filing in this sequence was filed on 03 Mar 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Official SEC source

Ownership activity is grounded in SEC Form 3 disclosures.

View source filing

Reporting Owners (1)

CIK 0002008021 Primary reporting owner

Brzezinski Erin M

Relationship: VP and Controller
Address: C/O MPLX LP, 200 E. HARDIN STREET, FINDLAY
Signature: /s/ Molly R. Benson, Attorney-in-Fact for Erin M. Brzezinski
Signature date: 02 Apr 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

MPLX holding

Common Units (Limited Partner Interests)

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 4,733
Date: 01 Apr 2026
Ownership: Direct

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

SEC remarks

Exhibit List: Exhibit 24 Power of Attorney; The Reporting Person is the Vice President and Controller of MPLX GP LLC, the general partner of the Issuer. The Issuer is managed by the directors and executive officers of MPLX GP LLC.