Below is a recap of the C-suite developments at America’s highest-revenue-generating companies announced between July 4-11, organized by sector. Titles included in this roundup: CEOs (Chief Executive Officers), CFOs (Chief Financial Officers), COOs (Chief Operating Officers), CMOs (Chief Marketing Officers), and Chief Customer Officers. We also include CIOs (Chief Information Officers), CTOs (Chief Technology Officers), CHROs (Chief Human Resources Officers), and Chief People Officers when there are Power Moves within the Fortune 500 announced pertaining to those roles.

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Engineering and construction

• Toll Brothers (No. 390) appointed Gregg Ziegler as CFO, effective Oct. 31. Ziegler, who has been with the company for 23 years, currently serves as SVP, Investor Relations and Treasurer of the company and will succeed Marty Connor, who is retiring after 17 years at Toll Brothers. 

Financials

• Unum Group (No. 330) appointed Andrew Walker to the newly created role Chief Customer Operations Officer. Walker previously served as EVP and COO at Western Union.

Food, beverages, and tobacco

• Hershey (No. 379) appointed Kirk Tanner as CEO, effective Aug. 18. Tanner currently serves as CEO of Wendy’s and will succeed Michele Buck, who announced her retirement in January. Read more: Hershey CEO’s exit knocks the number of women running Fortune 500 companies
  
  
• J.M. Smucker (No. 466) announced that Gail Hollander will retire as CMO, effective April 2026. Hollander has served as CMO of the company since 2023. The company will search for a successor.

Health care

• Baxter International (No. 288) appointed Andrew Hider as CEO, effective no later than Sept. 3. Hider currently serves as CEO of ATS Corporation and succeeds interim CEO Brent Shafer, who was appointed to the role after former CEO José Almeida retired. Hider will transition to chair of the company. 

Technology

• Apple (No. 4) appointed Sabih Khan as COO, effective later this month. Khan currently holds the title SVP of Operations and succeeds Jeff Williams, who will continue to oversee Apple’s design team, Apple Watch, and the company’s health initiatives before retiring at the end of the year. Read more: Meet Apple’s next COO Sabih Khan, a 30-year veteran who will oversee the iPhone maker’s supply chain amid the ‘Trump tariff black cloud’
  
  
• KBR (No. 480) announced that Byron Bright has resigned as COO, effective July 11. Bright had been with the company for 15 years and served as COO since January 2025. The company has not made any indication as to Bright’s successor.

Source: S&P Global Market Intelligence