The Marathon Oil Corporation (MRO) is an American petroleum and natural gas exploration and production company headquartered in Houston, Texas. MRO operates in the United States, Canada, Europe, Africa, and the Middle East, and is one of the largest independent oil and gas exploration and production companies
From Wikipedia
Marathon Oil Corporation was an American company engaged in hydrocarbon exploration. In November 2024, it was acquired by ConocoPhillips and absorbed into the company.