Lyon Shawn M

Track record

How each disclosed position did against the S&P ~6 months later

No positions we can measure against the market yet — outcomes appear once a disclosed buy is ~6 months old.

Disclosed positions

Estimated from their latest filings — positions may have changed since

Estimated positions from their latest filingsPro →

Activity

Open-market buy & sell volume

BuySell

Total +$0.0000 bought · −$875.0K sold

All filings on record

Every Form 4 transaction we track for this filer

All10Buys0Sells1

Stock	Transaction	Date	~6mo vs S&P
MPCMarathon Petroleum Corp	Sell $875.0K · 2,500 sh	2026-08-13	—
MPLXPMPLX LP	Tax $47.3K · 798 sh	2026-03-02	—
MPLXPMPLX LP	Tax $61.2K · 1,033 sh	2026-03-02	—
MPLXPMPLX LP	Tax $54.5K · 920 sh	2026-03-02	—
MPCMarathon Petroleum Corp	Tax $57.6K · 279 sh	2026-03-02	—
MPCMarathon Petroleum Corp	Tax $48.9K · 237 sh	2026-03-02	—
MPCMarathon Petroleum Corp	Tax $53.0K · 257 sh	2026-03-02	—
MPLXPMPLX LP	Grant — · 5,986 sh	2026-03-01	—
MPCMarathon Petroleum Corp	Grant — · 1,730 sh	2026-03-01	—
MPLXPMPLX LP	Tax $13.4K · 245 sh	2025-12-12	—

MPCSell

2026-08-13 · Marathon Petroleum Corp

$875.0K

—

MPLXPTax

2026-03-02 · MPLX LP

$47.3K

—

MPLXPTax

2026-03-02 · MPLX LP

$61.2K

—

MPLXPTax

2026-03-02 · MPLX LP

$54.5K

—

MPCTax

2026-03-02 · Marathon Petroleum Corp

$57.6K

—

MPCTax

2026-03-02 · Marathon Petroleum Corp

$48.9K

—

MPCTax

2026-03-02 · Marathon Petroleum Corp

$53.0K

—

MPLXPGrant

2026-03-01 · MPLX LP

5,986

—

MPCGrant

2026-03-01 · Marathon Petroleum Corp

1,730

—

MPLXPTax

2025-12-12 · MPLX LP

$13.4K

—

Newest 10 of 11 filings·Every Form 4 on record, with outcomesPro →

Filing in the same companies

Other insiders active in these names in the last 3 years

BM

Benson Molly R

MPC · MPLXP · last 2026-03-02

FG

Floerke Gregory Scott

MPC · MPLXP · last 2026-03-02

MM

Mannen Maryann T.

MPC · MPLXP · last 2026-03-02

KM

Khoury Maria A

MPC · MPLXP · last 2026-03-01

HM

Hennigan Michael J

MPC · MPLXP · last 2025-12-12

HM

Henschen Michael A II

MPC · last 2026-08-12

Outcomes measure each position — the first buy in a stock and every buy within 182 days — against the closing price ~6 months (120 trading days) later, with the S&P 500 over the same span for context. Pre-scheduled 10b5-1 plan trades are excluded from the record. Positions are estimated from the latest reported post-transaction holdings, split-adjusted, at the latest close. Built from SEC Form 4 filings and market prices — past outcomes, not predictions or advice.