Shawn M. Lyon

CIK: 0001948454

Transaction Breakdown

Open Market Buys (P)1 (4.2%)

High conviction signal

Open Market Sales (S)3 (12.5%)

Position reduction

Option Exercises (M)0 (0.0%)

Derivative conversions

Awards (A)4 (16.7%)

Compensation grants

Other (G, F, J, C, D, …)16 (66.7%)

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

Companies & Roles (2)

MPC

Marathon Petroleum Corp

Officer

MPLX

MPLX LP

Officer

Discretionary Trading P&L

Holdings

Transaction History (24 total)

MPC
Marathon Petroleum Corp
Aug 31, 2026
Sale(S)
Direct
1K shares at avg. $375.75$376K
MPC
Marathon Petroleum Corp
Aug 28, 2026
Sale(S)
Direct
425 shares at avg. $368.51$157K
MPC
Marathon Petroleum Corp
Aug 13, 2026
Sale(S)
Direct
2.5K shares at avg. $350.00$875K
MPC
Marathon Petroleum Corp
Mar 11, 2026
Gift(G)
Direct
1.2K shares-
MPLX
MPLX LP
Mar 2, 2026
Tax Payment(F)
Direct
798 shares at avg. $59.22$47K
MPLX
MPLX LP
Mar 2, 2026
Tax Payment(F)
Direct
1K shares at avg. $59.22$61K
MPLX
MPLX LP
Mar 2, 2026
Tax Payment(F)
Direct
920 shares at avg. $59.22$54K
MPC
Marathon Petroleum Corp
Mar 2, 2026
Tax Payment(F)
Direct
257 shares at avg. $206.30$53K
MPC
Marathon Petroleum Corp
Mar 2, 2026
Tax Payment(F)
Direct
279 shares at avg. $206.30$58K
MPC
Marathon Petroleum Corp
Mar 2, 2026
Tax Payment(F)
Direct
237 shares at avg. $206.30$49K
MPLX
MPLX LP
Mar 1, 2026
Award(A)
Direct
6K shares-
MPC
Marathon Petroleum Corp
Mar 1, 2026
Award(A)
Direct
1.7K shares-
MPLX
MPLX LP
Dec 12, 2025
Tax Payment(F)
Direct
245 shares at avg. $54.85$13K
MPC
Marathon Petroleum Corp
Dec 12, 2025
Tax Payment(F)
Direct
86 shares at avg. $185.77$16K
MPLX
MPLX LP
Mar 7, 2025
Purchase(P)
Direct
4K shares at avg. $52.75$211K
MPC
Marathon Petroleum Corp
Mar 3, 2025
Tax Payment(F)
Direct
480 shares at avg. $148.65$71K
MPC
Marathon Petroleum Corp
Mar 3, 2025
Tax Payment(F)
Direct
240 shares at avg. $148.65$36K
MPC
Marathon Petroleum Corp
Mar 3, 2025
Tax Payment(F)
Direct
189 shares at avg. $148.65$28K
MPLX
MPLX LP
Mar 3, 2025
Tax Payment(F)
Direct
936 shares at avg. $54.34$51K
MPLX
MPLX LP
Mar 3, 2025
Tax Payment(F)
Direct
1.1K shares at avg. $54.34$57K
MPC
Marathon Petroleum Corp
Mar 1, 2025
Award(A)
Direct
2.1K shares-
MPLX
MPLX LP
Mar 1, 2025
Award(A)
Direct
6K shares-
MPLX
MPLX LP
Dec 13, 2024
Tax Payment(F)
Direct
317 shares at avg. $48.86$15K
MPC
Marathon Petroleum Corp
Dec 13, 2024
Tax Payment(F)
Direct
73 shares at avg. $145.56$11K

		Type	Shares	Price		Ownership
Aug 31, 2026	MPC Marathon Petroleum Corp	Sale(S)	1,000	$375.75	$375,750	Direct
Aug 28, 2026	MPC Marathon Petroleum Corp	Sale(S)	425	$368.51	$156,617	Direct
Aug 13, 2026	MPC Marathon Petroleum Corp	Sale(S)	2,500	$350.00	$875,000	Direct
Mar 11, 2026	MPC Marathon Petroleum Corp	Gift(G)	1,186	-	$0	Direct
Mar 2, 2026	MPLX MPLX LP	Tax Payment(F)	798	$59.22	$47,258	Direct
Mar 2, 2026	MPLX MPLX LP	Tax Payment(F)	1,033	$59.22	$61,174	Direct
Mar 2, 2026	MPLX MPLX LP	Tax Payment(F)	920	$59.22	$54,482	Direct
Mar 2, 2026	MPC Marathon Petroleum Corp	Tax Payment(F)	257	$206.30	$53,019	Direct
Mar 2, 2026	MPC Marathon Petroleum Corp	Tax Payment(F)	279	$206.30	$57,558	Direct
Mar 2, 2026	MPC Marathon Petroleum Corp	Tax Payment(F)	237	$206.30	$48,893	Direct
Mar 1, 2026	MPLX MPLX LP	Award(A)	5,986	-	$0	Direct
Mar 1, 2026	MPC Marathon Petroleum Corp	Award(A)	1,730	-	$0	Direct
Dec 12, 2025	MPLX MPLX LP	Tax Payment(F)	245	$54.85	$13,438	Direct
Dec 12, 2025	MPC Marathon Petroleum Corp	Tax Payment(F)	86	$185.77	$15,976	Direct
Mar 7, 2025	MPLX MPLX LP	Purchase(P)	4,000	$52.75	$211,000	Direct
Mar 3, 2025	MPC Marathon Petroleum Corp	Tax Payment(F)	480	$148.65	$71,352	Direct
Mar 3, 2025	MPC Marathon Petroleum Corp	Tax Payment(F)	240	$148.65	$35,676	Direct
Mar 3, 2025	MPC Marathon Petroleum Corp	Tax Payment(F)	189	$148.65	$28,095	Direct
Mar 3, 2025	MPLX MPLX LP	Tax Payment(F)	936	$54.34	$50,862	Direct
Mar 3, 2025	MPLX MPLX LP	Tax Payment(F)	1,052	$54.34	$57,166	Direct
Mar 1, 2025	MPC Marathon Petroleum Corp	Award(A)	2,098	-	-	Direct
Mar 1, 2025	MPLX MPLX LP	Award(A)	6,014	-	-	Direct
Dec 13, 2024	MPLX MPLX LP	Tax Payment(F)	317	$48.86	$15,489	Direct
Dec 13, 2024	MPC Marathon Petroleum Corp	Tax Payment(F)	73	$145.56	$10,626	Direct

1-24 of 24 transactions

About Lyon Shawn M

Lyon Shawn M (SEC CIK 0001948454) files insider reports with the SEC as SVP Log & Storage, MPLX GP LLC of Marathon Petroleum Corp (MPC) and Senior VP, Log. & Storage of MPLX LP (MPLX).

Signal8 holds 12 ownership filings by Lyon Shawn M, all Form 4s, filed between Dec 17, 2024 and Sep 1, 2026. Those filings report 24 transactions, from Dec 13, 2024 to Aug 31, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Lyon Shawn M's filings is in FINDLAY, OH.

Recent filings by Lyon Shawn M

Aug 31, 2026: Open-market sale of MPC shares (Form 4, code S).
Aug 28, 2026: Open-market sale of MPC shares (Form 4, code S).
Aug 13, 2026: Open-market sale of MPC shares (Form 4, code S).
Mar 11, 2026: Gift of MPC shares (Form 4, code G).
Mar 2, 2026: Tax withholdings of MPLX shares (3 lines, Form 4, code F).

Other insiders filing for Marathon Petroleum Corp (MPC)

Benson Molly R, Chief Legal Ofc & Corp Sec
Henschen Michael A II, Ex VP, Refining
Mannen Maryann T., Chairman, President & CEO
Hessling Ricky D., Chief Commercial Officer
SURMA JOHN P, Director
STICE J MICHAEL, Director

How to read Form 4 transaction codes