Below is a recap of the C-suite developments at America’s highest-revenue-generating companies announced between , organized by sector. Titles included in this roundup: CFOs (Chief Financial Officers). We also include CEOs (Chief Executive Officers), COOs (Chief Operating Officers), CIOs (Chief Information Officers), CTOs (Chief Technology Officers), CHROs (Chief Human Resources Officers), Chief People 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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Health care

• Danaher (No. 180) appointed Matthew Gugino as the company’s next CFO, effective Feb. 28, 2026. Gugino currently serves as Group CFO of the company’s Life Sciences Innovations Group and VP of Financial Planning and Analysis. He succeeds Matthew McGrew, who will remain an EVP of the company before retiring after more than 20 years with the company. 

Technology

• Thermo Fisher Scientific (No. 104)announced that SVP and CFO StephenWilliamson will retire from the company, effective March 31, 2026. Williamson has been with the company since 2001 and has been CFO since 2015. Jim Meyer, VP of Financial Operations at the company, will succeed Williamson, effective March 1.

Source: S&P Global Market Intelligence