This is Fortune 500 Power Moves, a column tracking executive shifts—from appointments and promotions to resignations and retirements—within the highest ranks of Fortune 500 companies.
Below is a recap of the C-suite developments at America’s highest-revenue-generating companies announced between Dec. 13-19, 2025, organized by sector. Titles included in this roundup: CEOs (Chief Executive Officers), CFOs (Chief Financial Officers), COOs (Chief Operating Officers), CTOs (Chief Technology Officers), and CMOs (Chief Marketing Officers). We also include Chief Information Officers (CIOs), CHROs (Chief Human Resources Officers), Chief People Officers, and Chief Customer Officers when there are Power Moves within the Fortune 500 announced pertaining to those roles.
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Energy
Marathon Petroleum (No. 29) appointed Maria A. Khoury EVP and CFO, effective Jan. 19. Khoury currently serves as VP, Group CFO Biotechnology for Danaher (No. 180) and will succeed John J. Quaid, who will stay with the company for a transition period.
