Lyon Shawn M

Officer · MPC, MPLX

As of 2026-09-16, Lyon Shawn M has 24 Form 4 transactions on record across 2 companies — 14 in the trailing 12 months.

Everything this person has disclosed to the SEC on Form 4 — across every company they file for — reconstructed from the public record. A filing history, not a tip sheet.

Reconstructed holdings

Direct: $6.3MIndirect: $0$6.3Mas of 2026-09-16
  • Direct $6.3M
  • Indirect $0
MPCdirect11,194 sh$4.6M
MPLXdirect28,289 sh$1.6M

Reconstructed from this person's own Form 4 filings — the total each filing reported owning afterward, priced at the close on the as-of date shown. A filed position can lag the real one.

Direct and indirect holdings (e.g. through a trust or fund) are tagged separately, as filed.

Trades by company

MPC · 14 trades
2026-08-31: Sale, 1,000 sh ($376K)2026-08-28: Sale, 425 sh ($157K)2026-08-13: Sale, 2,500 sh ($875K)2026-03-11: Gift, 1,186 sh ($0)2026-03-02: Withheld for tax, 279 sh ($58K)2026-03-02: Withheld for tax, 257 sh ($53K)2026-03-02: Withheld for tax, 237 sh ($49K)2026-03-01: Award / grant, 1,730 sh ($0)2025-12-12: Withheld for tax, 86 sh ($16K)2025-03-03: Withheld for tax, 480 sh ($71K)2025-03-03: Withheld for tax, 240 sh ($36K)2025-03-03: Withheld for tax, 189 sh ($28K)2025-03-01: Award / grant, 2,098 sh ($0)2024-12-13: Withheld for tax, 73 sh ($11K)
MPLX · 10 trades
2026-03-02: Withheld for tax, 1,033 sh ($61K)2026-03-02: Withheld for tax, 920 sh ($54K)2026-03-02: Withheld for tax, 798 sh ($47K)2026-03-01: Award / grant, 5,986 sh ($0)2025-12-12: Withheld for tax, 245 sh ($13K)2025-03-07: Purchase, 4,000 sh ($211K)2025-03-03: Withheld for tax, 1,052 sh ($57K)2025-03-03: Withheld for tax, 936 sh ($51K)2025-03-01: Award / grant, 6,014 sh ($0)2024-12-13: Withheld for tax, 317 sh ($15K)

Filing ledger

DateCompanyActionShares @ priceValueOwnership ΔOwned afterFiling
2026-08-31MPCSale1,000 @ $375.75$376K−8.2% of holding11,194Form 4
2026-08-28MPCSale425 @ $368.51$157K−3.4% of holding12,194Form 4
2026-08-13MPCSale2,500 @ $350.00$875K−16.5% of holding12,619Form 4
2025-03-07MPLXPurchase4,000 @ $52.75$211K+18.8% of holding25,299Form 4
20 award / exercise / gift records — not counted as purchases
DateCompanyActionSharesOwned afterFiling
2026-03-11MPCGift1,18615,119Form 4
2026-03-02MPLXWithheld for tax1,03329,087Form 4
2026-03-02MPCWithheld for tax27916,305Form 4
2026-03-02MPLXWithheld for tax92030,120Form 4
2026-03-02MPCWithheld for tax25716,821Form 4
2026-03-02MPCWithheld for tax23716,584Form 4
2026-03-02MPLXWithheld for tax79828,289Form 4
2026-03-01MPCAward / grant1,73017,078Form 4
2026-03-01MPLXAward / grant5,98631,040Form 4
2025-12-12MPCWithheld for tax8615,348Form 4
2025-12-12MPLXWithheld for tax24525,054Form 4
2025-03-03MPCWithheld for tax48015,863Form 4
2025-03-03MPLXWithheld for tax1,05221,299Form 4
2025-03-03MPLXWithheld for tax93622,351Form 4
2025-03-03MPCWithheld for tax24015,434Form 4
2025-03-03MPCWithheld for tax18915,674Form 4
2025-03-01MPCAward / grant2,09816,343Form 4
2025-03-01MPLXAward / grant6,01423,287Form 4
2024-12-13MPLXWithheld for tax31717,273Form 4
2024-12-13MPCWithheld for tax7314,245Form 4

Source: SEC Form 4 filings. Each row links to its original filing.

Research tool, not investment advice — historical frequencies, not recommendations. A product of Marovel Technologies LLC. Full terms.