Marathon Oil is seeking a new chief financial officer after J R Sult stepped down from the role.
The company said Mr Sult had decided to leave due to “personal reasons” and that the departure was not related to any disagreement with Marathon regarding financial disclosures, accounting or business matters.
Pat Wagner has been appointed interim chief financial officer while Marathon looks for a new CFO.
Mr Wagner, vice president of corporate development and strategy, joined Marathon Oil in 2014.
He previously held senior roles at QR Energy LP, Scotia Waterous, and Devon Energy Corp.
Lee Tillman, Marathon Oil president and CEO, said: “Pat brings a solid balance of financial and operating skills to his role as interim CFO and will continue to support our ongoing focus on financial discipline during this transition.”
Mr Tillman said he thanked Mr Sults for his substantial contribution over the years and wished him well for the future.