Marathon Oil flies to Eau Claire the week ConocoPhillips integration is complete

Marathon Oil flew from MBS International Airport in Michigan to Chippewa Valley Regional Airport in Eau Claire, Wisconsin, on the evening of May 14, 2026, a 71-minute hop aboard the Gulfstream V N540M.

The trip lands in Eau Claire the same week ConocoPhillips confirmed it has completed the integration of Marathon Oil, which it acquired in a $22.5 billion all-stock deal that closed in late 2024, per an April 18 report from EnergyPricesToday.com. The combined company has since booked over $1 billion in annualized synergies and now holds more than two decades of Lower 48 drilling inventory, according to ConocoPhillips CEO Ryan Lance. Marathon Oil's corporate existence as a standalone entity is effectively over, but its legacy Gulfstream continues to move former executives and personnel.

This flight follows a pattern of short-haul trips across the Midwest and Great Lakes region over the past two days, including stops in Ohio, Michigan, and Wisconsin. Eau Claire is not a known Marathon Oil operational hub; the arrival may relate to personal travel or a private event for former Marathon staff now working under the ConocoPhillips umbrella.