Marathon Petroleum (MPC) Shares Outstanding (Diluted Average) (2010 - 2026)

Marathon Petroleum has disclosed Shares Outstanding (Diluted Average) across 17 years of filings, most recently posting $295.0 million for Q1 2026.

• Shares Outstanding (Diluted Average) for Q1 2026 came in at $295.0 million, down 5.75% year-over-year; the trailing twelve-month figure through Mar 2026 was $295.0 million (down 5.75% YoY), and the FY2025 annual result was $306.0 million, down 10.26% from the prior year.
• Shares Outstanding (Diluted Average) came in at $295.0 million for Q1 2026 at Marathon Petroleum, down from $306.0 million in the prior quarter.
• In the past five years, Shares Outstanding (Diluted Average) ranged from a high of $568.0 million in Q1 2022 to a low of $295.0 million in Q1 2026.
• The 5-year median for Shares Outstanding (Diluted Average) is $362.0 million (2024), against an average of $395.8 million.
• Across the five-year window, Shares Outstanding (Diluted Average) fell 24.23% in 2023 and retreated 5.75% in 2026, its largest moves.
• Marathon Petroleum's Shares Outstanding (Diluted Average) stood at $516.0 million in 2022, then decreased by 20.74% to $409.0 million in 2023, then slipped by 16.63% to $341.0 million in 2024, then slipped by 10.26% to $306.0 million in 2025, then retreated by 3.59% to $295.0 million in 2026.
• The last three Shares Outstanding (Diluted Average) figures came in at $295.0 million (Q1 2026), $306.0 million (Q4 2025), and $304.0 million (Q3 2025), per Business Quant data.