---
schema_version: "secwatch.filing_event.v1"
accession: "0000101778-23-000129"
form_type: "8-K"
ticker: null
cik: "0000101778"
company_name: "MARATHON OIL CORP"
filed_at: "2023-10-27T23:59:59+00:00"
generated_at: "2026-06-09T06:37:58.378077+00:00"
event_type: "other"
sentiment: "neutral"
materiality_score: 0.1
calibrated_materiality_score: 0.1
confidence: "high"
source: SEC EDGAR
---

# Marathon Oil amends bylaws; updates director nomination rules, adopts gender-neutral terms

## Summary
- Revised procedures for director nominations; added Rule 14a-19 compliance requirement.
- Amended majority voting provision to clarify definition of contested election.
- Clarified chair of stockholder meeting power to adjourn.
- Adopted gender-neutral terms (e.g., 'chair' replaces 'chairman').
- Incorporated updates to Delaware General Corporation Law and administrative changes.

## SEC filing metadata
- accession: 0000101778-23-000129
- form_type: 8-K
- cik: 0000101778
- company_name: MARATHON OIL CORP
- filed_at: 2023-10-27T23:59:59+00:00
- event_type: other
- sentiment: neutral
- materiality_score: 0.1
- calibrated_materiality_score: 0.1
- confidence: high
- sec_items: 5.03, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/101778/000010177823000129/0000101778-23-000129-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/101778/000010177823000129/mro-20231025.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000101778-23-000129
- JSON: https://secwatch.observer/filing/0000101778-23-000129.json
- Plain text: https://secwatch.observer/filing/0000101778-23-000129.txt

## Key facts
- Governance Changes
  MARATHON OIL CORP: Adopted amended and restated by-laws effective immediately, revising director nomination procedures, majority voting, meeting chair powers, gender-neutral terms, and administrative updates (effective 2023-10-25).
  - Change: bylaw amendment
  - Effective: 2023-10-25
  source text: On October 25, 2023, the Board of Directors (the “Board”) of Marathon Oil Corporation (the “Company”) adopted and approved, effective immediately, amended and restated by-laws of the Company (as amended and restated, the “Amended and Restated By-laws”).
  evidence_url: https://www.sec.gov/Archives/edgar/data/101778/000010177823000129/0000101778-23-000129-index.htm

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.