August 7, 2026, 12:05 PM ETAGCO (No. 417) named Indira Agarwal CFO.Courtesy of AGCOThis 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 Aug. 1–7, 2026, organized by sector. Titles included in this roundup: CEOs (Chief Executive Officers), COOs (Chief Operating Officers), CFOs (Chief Financial Officers), CTOs (Chief Technology Officers), CHROs (Chief Human Resources Officers), and Chief People Officers. We also include CIOs (Chief Information Officers), CMOs (Chief Marketing Officers), and Chief Customer Officers when there are Power Moves within the Fortune 500 announced pertaining to those roles.
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Energy
ConocoPhillips (No. 75) promoted CFO and EVP of Strategy and Commercial Andy O’Brien to President and CEO, effective Sept. 1. O’Brien has been with the company since 1997 and will succeed Ryan Lance, who will retire and serve as transitional executive chair. Konnie Haynes-Welsh, VP of Finance and Controller, was promoted to SVP and CFO. Read more: ConocoPhillips CEO Ryan Lance steps down after 14 years and will be replaced by the CFO, a company lifer
