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 Oct. 10-23, 2026, organized by sector. Titles included in this roundup: CEOs (Chief Executive Officers), CFOs (Chief Financial Officers), COOs (Chief Operating Officers), and CTOs (Chief Technology Officers). We also include CIOs (Chief Information 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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Business services
- ManpowerGroup (No. 247) appointed Becky Frankiewicz CEO, effective Jan. 1, 2027. Frankiewicz currently serves as President and Chief Strategy Officer and previously led the Quaker Foods North America business of PepsiCo (No. 46). She succeeds Jonas Prising, who will become Executive Chair.
Food and drug stores
- Sprouts Farmers Market (No. 450) announced that James Bahrenburg stepped down as CTO, effective Oct. 12. Bahrenburg will remain an advisor through March 31, 2027. Plans for a successor have not been announced.
Retailing
- Tractor Supply (No. 290) appointed Fahim Siddiqui EVP and Chief Technology and Digital Officer, effective Oct. 26. Siddiqui most recently served as EVP and CIO of Home Depot (No. 25). Siddiqui succeeds Robert D. Mills, who resigned as EVP and CTO, Digital and Pet Services in August of this year to become President and CEO of B&G Foods.
Transportation
- Union Pacific (No. 187) announced that Jennifer Hamann will retire as CFO in early 2027 after 35 years with the company and seven years as CFO. The company will announce succession plans at a later date.
- CSX (No. 324) announced that Mike Cory will retire as EVP and COO after more than three years with the company. The company did not name a successor or specify a retirement date.
Source: S&P Global Market Intelligence