SCHEDULE 13G/A: BlackRock Amends Marathon Petroleum Stake, Disclosing 6.8% Passive Ownership

BlackRock, Inc. has filed an amended Schedule 13G, revealing a 6.8% beneficial ownership stake in Marathon Petroleum Corp. as of March 31, 2025, held for passive investment purposes.

Summary

• BlackRock, Inc. filed an Amendment No. 1 to its Schedule 13G regarding its beneficial ownership in Marathon Petroleum Corp. (MPC).
• As of March 31, 2025, BlackRock beneficially owns an aggregate of 21,060,653 shares of Marathon Petroleum Corp. common stock.
• This ownership represents 6.8% of the total outstanding common stock of Marathon Petroleum Corp.
• BlackRock holds sole voting power over 19,589,243 shares and sole dispositive power over 21,060,653 shares.
• The filing is made under Rule 13d-1(b), indicating that BlackRock is a passive institutional investor and does not intend to change or influence the control of the issuer.
• BlackRock certifies that the securities were acquired and are held in the ordinary course of business.
• Various BlackRock business units contribute to this aggregate ownership, with BlackRock Fund Managers Ltd specifically noted as beneficially owning 5% or greater of the outstanding shares within BlackRock's consolidated reporting.

Sentiment

Score: 6

Explanation: The document is a routine regulatory filing disclosing a passive ownership stake. It is neutral in tone but the continued significant holding by a major institutional investor can be seen as a positive signal of confidence in the underlying asset, Marathon Petroleum Corp.

Positives

• BlackRock's continued significant passive investment in Marathon Petroleum Corp. indicates a long-term, non-activist holding by a major institutional investor.
• The filing under Rule 13d-1(b) confirms BlackRock's intent as a passive investor, which typically signals stability rather than an intent to influence corporate control.

Future Outlook

This Schedule 13G filing is a disclosure of current beneficial ownership and does not contain forward-looking statements or guidance regarding Marathon Petroleum Corp.'s future performance or BlackRock's future investment intentions beyond its stated passive holding.

Management Comments

• BlackRock, Inc. certifies that the securities were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities.

Industry Context

This filing reflects a routine disclosure by a major institutional asset manager, BlackRock, regarding its passive investment in a significant player within the U.S. oil refining and marketing industry, Marathon Petroleum Corp. Such filings are common for large funds that hold substantial, but non-controlling, stakes across various sectors.

Comparison to Industry Standards

• As a Schedule 13G filing, this document primarily serves as a regulatory disclosure of beneficial ownership by a passive institutional investor. It does not provide performance metrics for comparison to industry standards.
• BlackRock's 6.8% stake in Marathon Petroleum Corp. is a substantial passive holding, typical for large index or actively managed funds that track major market indices or sectors where Marathon Petroleum Corp. is a constituent.

Stakeholder Impact

• Shareholders: Provides transparency regarding a significant institutional shareholder's passive stake, potentially offering a degree of stability as BlackRock is not seeking to influence control.
• Management: Confirms that a major institutional investor holds a significant stake without an intent to interfere with corporate control, allowing management to focus on long-term strategy.

Next Steps

• The document does not specify any future actions, events, or milestones for Marathon Petroleum Corp. or BlackRock's investment beyond the ongoing passive holding.

Key Dates

Keywords

BlackRock, Marathon Petroleum Corp, MPC, Schedule 13G, beneficial ownership, institutional investor, common stock, SEC filing, passive investment, oil and gas, refining