Fortune 500 Power Moves: Which executives gained and lost power this week

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 Sept.

5-11, 2026, organized by sector.

Titles included in this roundup: CTOs (Chief Technology Officers) and CMOs (Chief Marketing Officers).

We also include CEOs (Chief Executive Officers), CFOs (Chief Financial Officers), COOs (Chief Operating Officers), CIOs (Chief Information Officers), 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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Financials Equinix (No.

436) appointed DD Dasgupta CMO.

He previously served as VP, Product and Solution Marketing at the company and held similar roles at Cisco Systems (No.

83) and Juniper Networks , now a part of Hewlett Packard Enterprise (No.

133) , before then.

He succeeds Adam Berlew .

Media Sirius XM Holdings (No.

463) appointed Sean Gibbons SVP, Chief Product and Technology Officer.