Below is a recap of the C-suite developments at America’s highest-revenue-generating companies announced between Oct. 18-24, organized by sector. Titles included in this roundup: CEOs (Chief Executive Officers), CFOs (Chief Financial Officers), COOs (Chief Operating Officers), and CMOs (Chief Marketing Officers). We also include CTOs (Chief Technology Officers), 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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Aerospace and defense

• Textron (No. 311) appointed Lisa Atherton as CEO, effective Jan. 4, 2026. Atherton currently serves as president and CEO of the company’s Bell segment. She will succeed Scott Donnelly, who after 16 years as CEO will transition to executive chairman of the company’s board.
  
• Howmet Aerospace (No. 498) announced that CFO Ken Giacobbe will transition to special advisor to CEO John Plant, effective Dec. 1, before retiring on Dec. 31. Giacobbe has been with the company for more than two decades. Effective Dec. 1, Patrick Winterlich, most recently EVP and CFO at Hexcel, will succeed Giacobbe as CFO.

Business services

• Mastercard (No. 152) appointed Jill Kramer as Chief Marketing and Communications Officer, effective Dec. 1. She most recently served as Chief Marketing and Communications Officer for Accenture (No. 211 on the Fortune Global 500) and will succeed Raja Rajamannar, who will transition to senior fellow for the company.

Energy

• World Kinect (No. 106) appointed Ira M. Birns as CEO, effective Jan. 1, 2026. Birns, who currently serves as president and CFO of the company, will succeed Michael Kasbar, who will transition to executive chairman. The company also announced that Mike Tejada, SVP and Chief Accounting Officer at the company, will succeed Birns as CFO.

Financials

• Fannie Mae (No. 25) appointed COO Peter Akwaboah to the additional role of acting CEO, effective immediately, while the board looks for a permanent successor to Priscilla Almodovar. The Trump administration is reportedly weighing an IPO for the mortgage giant, which has been under U.S. government control since 2008. Almodovar, who served as CEO of Fannie Mae since late 2022, had been the only Latina CEO in the Fortune 500 before her abrupt departure this week.  

Health care

• Baxter International (No. 288) announced that Heather Knight, EVP, COO, and interim group president of the company’s medical products and therapies business, has resigned effective Oct. 29 to become Chief Commercial Officer at Solventum (No. 462), effective Nov. 10. Following Knight’s exit, Baxter International has stated it will no longer have a COO. 

Retailing

• Murphy USA (No. 231) announced that CFO Galagher Jeff exited the company on Oct. 14. Jeff’s departure was not the result of any disagreement regarding the company’s operations, financial performance, or condition, according to an SEC filing. Donald Smith Jr., Chief Accounting Officer and Treasurer of the company, was named interim CFO.

Technology

• DXC Technology (No. 315) promoted Anthony Pappas to CMO. Pappas previously served as VP, Business Leadership for the company.
  
• Science Applications International (No. 496) appointed James Reagan as interim CEO, effective Oct. 23. Reagan most recently served as EVP and CFO for Leidos Holdings (No. 250) and succeeded Toni Townes-Whitley, who had been one of only three Black women leading a Fortune 500 company. Thasunda Brown Duckett, CEO of TIAA (No. 98), and Joi M. Harris, CEO of DTE Energy (No. 337), are now the only Black female Fortune 500 CEOs.

  Source: S&P Global Market Intelligence

Correction, Oct. 24, 2025: A previous version of this article misstated the current number of Black women Fortune 500 CEOs.