Form 4: Marathon Petroleum Executive Sells Shares for Tax

Marathon Petroleum's SVP of Logistics and Storage, Shawn M. Lyon, reported a disposition of 86 common shares to cover tax withholding obligations.

Summary

• Shawn M. Lyon, Senior Vice President, Logistics and Storage of MPLX GP LLC, a subsidiary of Marathon Petroleum Corp (MPC), reported a transaction.
• On December 12, 2025, Lyon disposed of 86 shares of Marathon Petroleum common stock.
• The shares were disposed of at a price of $185.77 per share.
• This disposition was made to satisfy tax withholding obligations.
• Following the transaction, Lyon directly owns 15,348 shares of common stock.
• Lyon also indirectly owns 2,914.317 shares through a 401(k) Plan, which includes 64.431 shares acquired via dividend reinvestment and a deduction of 0.032 shares for an administrative fee.

Sentiment

Score: 5

Explanation: The filing reports a routine, non-discretionary transaction for tax withholding purposes, which is neutral in sentiment and does not indicate any positive or negative operational or financial developments for the company.

Future Outlook

This filing does not contain any forward-looking statements or guidance regarding the company's future outlook.

Industry Context

This routine insider transaction, specifically a disposition for tax withholding, is a common occurrence for executives receiving equity compensation and does not reflect broader industry trends or competitive positioning.

Comparison to Industry Standards

• Dispositions of shares to cover tax withholding obligations are standard practice across industries for executives receiving equity-based compensation, aligning with typical corporate governance and compensation structures.

Stakeholder Impact

• Shareholders: Minimal to no direct impact as this is a small, routine transaction for tax purposes and not a discretionary sale indicating a change in management's confidence.
• Employees: No direct impact on the broader employee base.

Key Dates

Recommendation

This Form 4 filing details a routine disposition of shares by an executive to cover tax withholding obligations. Such transactions are common and non-discretionary, providing no new information that would alter the fundamental investment thesis for Marathon Petroleum Corp. Therefore, a 'hold' recommendation is appropriate as this filing does not present a reason to change an existing position.

Keywords

Marathon Petroleum, MPC, Form 4, Insider Transaction, Share Disposition, Tax Withholding, Executive Compensation