Erin M. Brzezinski

CIK: 0002008021

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)0 (0.0%)

Position reduction

Option Exercises (M)0 (0.0%)

Derivative conversions

Awards (A)2 (25.0%)

Compensation grants

Other (G, F, J, C, D, …)6 (75.0%)

Gifts, tax withholding, conversions, dispositions to the issuer and other codes

Companies & Roles (2)

MPLX

MPLX LP

Officer

MPC

Marathon Petroleum Corp

Officer

Discretionary Trading P&L

Holdings

Transaction History (8 total)

MPC
Marathon Petroleum Corp
Mar 2, 2026
Tax Payment(F)
Direct
49 shares at avg. $206.30$10K
MPC
Marathon Petroleum Corp
Mar 2, 2026
Tax Payment(F)
Direct
59 shares at avg. $206.30$12K
MPC
Marathon Petroleum Corp
Mar 2, 2026
Tax Payment(F)
Direct
42 shares at avg. $206.30$9K
MPC
Marathon Petroleum Corp
Mar 1, 2026
Award(A)
Direct
509 shares-
MPC
Marathon Petroleum Corp
Mar 3, 2025
Tax Payment(F)
Direct
43 shares at avg. $148.65$6K
MPC
Marathon Petroleum Corp
Mar 3, 2025
Tax Payment(F)
Direct
50 shares at avg. $148.65$7K
MPC
Marathon Petroleum Corp
Mar 3, 2025
Tax Payment(F)
Direct
80 shares at avg. $148.65$12K
MPC
Marathon Petroleum Corp
Mar 1, 2025
Award(A)
Direct
590 shares-

		Type	Shares	Price		Ownership
Mar 2, 2026	MPC Marathon Petroleum Corp	Tax Payment(F)	49	$206.30	$10,109	Direct
Mar 2, 2026	MPC Marathon Petroleum Corp	Tax Payment(F)	59	$206.30	$12,172	Direct
Mar 2, 2026	MPC Marathon Petroleum Corp	Tax Payment(F)	42	$206.30	$8,665	Direct
Mar 1, 2026	MPC Marathon Petroleum Corp	Award(A)	509	-	$0	Direct
Mar 3, 2025	MPC Marathon Petroleum Corp	Tax Payment(F)	43	$148.65	$6,392	Direct
Mar 3, 2025	MPC Marathon Petroleum Corp	Tax Payment(F)	50	$148.65	$7,433	Direct
Mar 3, 2025	MPC Marathon Petroleum Corp	Tax Payment(F)	80	$148.65	$11,892	Direct
Mar 1, 2025	MPC Marathon Petroleum Corp	Award(A)	590	-	-	Direct

1-8 of 8 transactions

About Brzezinski Erin M

Brzezinski Erin M (SEC CIK 0002008021) files insider reports with the SEC as VP and Controller of MPLX LP (MPLX) and VP and Controller of Marathon Petroleum Corp (MPC).

Signal8 holds 3 ownership filings by Brzezinski Erin M (1 Form 3, 2 Form 4), filed between Mar 4, 2025 and Apr 2, 2026. Those filings report 8 transactions, from Mar 1, 2025 to Mar 2, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Brzezinski Erin M's filings is in FINDLAY, OH.

Recent filings by Brzezinski Erin M

Mar 2, 2026: Tax withholdings of MPC shares (3 lines, Form 4, code F).
Mar 1, 2026: Grant or award of MPC shares (Form 4, code A).
Mar 3, 2025: Tax withholdings of MPC shares (3 lines, Form 4, code F).
Mar 1, 2025: Grant or award of MPC shares (Form 4, code A).

Other insiders filing for MPLX LP (MPLX)

Niemeyer Bruce L, Director
Dunn Micheal G., Director
Peiffer Garry L., Director
Walker Ray N JR, Director
SURMA JOHN P, Director
STICE J MICHAEL, Director

How to read Form 4 transaction codes