Santiago Argelich Hesse
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Santiago Argelich Hesse is Chief Executive Officer of Telefónica Deutschland Holding AG and a member of the Group Executive Committee of Telefónica S.A. He has held the CEO role at Telefónica Deutschland since January 2026. Before joining Telefónica Deutschland, he worked at Cellnex for seven years, including the last four and a half years as CEO of its Poland business, and earlier held leadership roles at Veon and worked in strategy consulting at Oliver Wyman as a Senior Partner focused on telecommunications strategy and transformation. He is known for his telecom and digital sector career, including work on Cellnex Telecom’s expansion across multiple European countries.
Updated 19 October 2026
Public sources: telefonica.de
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