When will Marathon Petroleum Corp. file its next 10-Q?

Marathon Petroleum Corp.'s most recent periodic report on file is a Form 10-Q for the period ended June 30, 2026, filed Aug. 4, 2026. Its fiscal year ends around Dec. 31, so the next period should close about Sept. 30, 2026, and that report is a Form 10-Q.

SEC rules give a large accelerated filer 40 days after period end to file a 10-Q, which lands on Nov. 9, 2026 after moving off weekends and federal holidays. Over its last 8 10-Qs, Marathon Petroleum Corp. filed between 30 and 37 days after period end (median 36 days), which gives the expected window above. Period ends are estimated from the company's own calendar and may shift by a few days in 52/53-week fiscal years.

Marathon Petroleum Corp. filed 9 Form 8-K current reports between Oct. 17, 2025 and Oct. 16, 2026. Each report lists the item numbers it covers; the counts below show how often each item appeared.

Item	Meaning	Times
9.01	Financial Statements and Exhibits	7
2.02	Results of Operations and Financial Condition	5
8.01	Other Events	3
5.02	Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers	2
5.07	Submission of Matters to a Vote of Security Holders	1
1.01	Entry into a Material Definitive Agreement	1
1.02	Termination of a Material Definitive Agreement	1
2.03	Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement	1

See what each 8-K item means.