Form 4: Marathon Petroleum Executive Reports Stock Transactions

Shawn M. Lyon, SVP of Logistics and Storage at MPLX GP LLC, reported the acquisition of 1,730 shares and subsequent disposition of 773 shares of Marathon Petroleum common stock.

Summary

• Shawn M. Lyon, Senior Vice President of Logistics and Storage for MPLX GP LLC, a subsidiary of Marathon Petroleum Corp, reported transactions in MPC common stock.
• On March 1, 2026, Lyon acquired 1,730 shares of common stock at a price of $0, likely as part of an equity award or grant.
• On March 2, 2026, Lyon disposed of a total of 773 shares (257, 237, and 279 shares) at a price of $206.3 per share. These dispositions are typically for tax withholding purposes related to the stock acquisition.
• Following these transactions, Lyon directly beneficially owns 16,305 shares of common stock.
• Additionally, Lyon indirectly beneficially owns 2,914.307 shares through a 401(k) Plan, reflecting a deduction of 0.010 shares for administrative fees.
• The transactions were made pursuant to a Rule 10b5-1(c) plan.

Sentiment

Score: 5

Explanation: StockSavvy.ai views this as a neutral filing, reflecting routine insider compensation and tax-related transactions without indicating any significant positive or negative operational or strategic developments.

Positives

• Acquisition of 1,730 shares by a Senior Vice President, indicating continued equity participation.
• Transactions were conducted under a Rule 10b5-1(c) plan, suggesting pre-planned and routine activity.

Negatives

• Disposition of 773 shares, although likely for tax purposes, reduces direct holdings.

Industry Context

StockSavvy.ai notes that routine insider transactions, particularly those under Rule 10b5-1 plans and involving tax-related dispositions, are common across the energy sector for executive compensation and do not typically signal a change in company fundamentals or strategy.

Stakeholder Impact

• Minimal direct impact on shareholders as these are routine insider transactions.
• Confirms ongoing equity participation for a key executive.

Key Dates

Recommendation

This Form 4 details routine insider transactions, including an equity award and subsequent tax-related dispositions, all conducted under a pre-arranged 10b5-1 plan. Such disclosures are common and generally do not provide new information that would warrant a change in investment recommendation for Marathon Petroleum Corp. The transactions reflect standard executive compensation practices rather than a significant shift in insider sentiment or company prospects.

Keywords

Marathon Petroleum, MPC, Shawn M. Lyon, Insider Trading, Form 4, Stock Transaction, Equity Award, 10b5-1 Plan, MPLX GP LLC