5.1 Members of the Group Executive Committee
Under the Articles of Incorporation, the Group Executive Committee comprises one or more members, who are appointed by the Board of Directors but cannot sit on the Board at the same time, with temporary exemptions permitted only in exceptional cases. The Board of Directors has delegated responsibility for overall executive management of Swisscom Ltd to the Group CEO, who may in turn delegate powers to subordinates, primarily to other members of the Group Executive Committee and the executive boards of the subsidiaries. As of 1 April 2025, the Board of Directors reduced the Group Executive Committee to Christoph Aeschlimann (Group CEO), Eugen Stermetz (Group CFO), Isa Müller-Wegner (Group CSO) and Klementina Pejic (Group CPO), who manage the Swisscom Group as a whole, with specific business in Switzerland and Italy managed by their respective executive committees. The Executive Committee for Swisscom Switzerland consists of the nine members of the Swisscom Group Executive Committee prior to April 2025, ensuring stability and continuity for the Swiss business in the future.
See section 2.1 Group structure
An overview of the composition of the Group Executive Committee as of 31 December 2025 and key details of the careers and qualifications of the members are provided below.
| Name | Nationality | Year of birth | Function | Appointed to the Group Executive Committee in | |
|---|---|---|---|---|---|
| Christoph Aeschlimann¹ | Switzerland | 1977 | Group CEO | February 2019 | |
| Isa Müller-Wegner | Switzerland, Germany | 1977 | Head of Group Strategy & Business Development, Group CSO | June 2023 | |
| Klementina Pejic | Germany | 1974 | Head of Group Human Resources, Group CPO | February 2021 | |
| Eugen Stermetz | Austria | 1972 | Head of Group Finance, Group CFO | March 2021 | |
| 1 Since June 2022 Group CEO. | |||||
Christoph Aeschlimann
Degree in Computer Science (Dipl. Ing.),École polytechnique fédérale de Lausanne (EPFL); MBA, McGill University (Canada)
Career history
2001–2004 Software Development Manager, Odyssey Asset Management Systems; 2006–2007 Business Unit Manager, Zühlke Group; 2007–2011 Odyssey Financial Technologies: 2007–2008 Area Services Manager, 2008–2011 Senior Account Manager EMEA; 2011–2012 Head of Switzerland and General Manager D-A-CH & CIS, BSB; 2012–2018 ERNI Group: 2012–2014 Business Area Manager, 2014–2017 Managing Director Switzerland, 2017–2018 CEO; since February 2019 Swisscom Ltd: 2019–June 2023 Head of IT, Network & Infrastructure and member of the Swisscom Group Executive Committee, since June 2022 Group CEO and Chair of the Group Executive Committee
For information on his external mandates, see mandates in the Remuneration Report.
Isa Müller-Wegner
MBA, Harvard Business School; MA PPE, Oxford University
Career history
1999–2002 Consultant, Arthur D. Little, London; 2002–2003 Business Strategist for Television, British Broadcasting Corporation, London; 2005–2007 Consultant, Bain & Company, London; 2007–2014 Principal, Bain & Company, Zurich; 2014–2019 eBay International Inc., Zurich: 2014–2015 Head of EMEA Strategy, 2015–2017 COO Emerging European Countries, 2017–2019 General Manager Emerging European Markets; 2019–2023 Executive Vice President, Bain Capital Private Equity, London; since June 2023 Swisscom Ltd: Group CSO and member of the Group Executive Committee
For information on his external mandates, see mandates in the Remuneration Report.
Klementina Pejic
MBA, Dortmund University of Applied Sciences and Arts; École Supérieure des Sciences Économiques et Commerciales ESSEC, Cergy-Pontoise, International Business MA
Career history
2001–2002 Consultant, Watson Wyatt AG, Zurich; 2003–2020 Clariant International AG: 2003–2004 Divisional HR Manager, 2005–2007 Global HR Business Partner, 2008–2009 Head Management Development Europe, 2010–2011 Head Global Talent Management, 2012–2013 Head Senior Management Development, 2014–2017 Head SMD & People Excellence, 2018–January 2021 Head Human Resources; since February 2021 Swisscom Ltd: Group CPO and member of the Group Executive Committee
For information on his external mandates, see mandates in the Remuneration Report.
Eugen Stermetz
Degree in Business Administration (lic. oec.), University of St. Gallen; PhD in Social and Economic Sciences (Dr. rer. soc. oec.), Vienna University of Economics and Business
Career history
1996–2000 Boston Consulting Group, Munich and Vienna; 2001–2005 CFO, Igeneon AG, Vienna; 2006–2008 CFO and Managing Director, F-star GmbH, Vienna; 2009–2011 CFO and member of the Executive Board, SVOX AG, Zurich; since 2012 Swisscom Ltd: until 2017 CFO Participations, 2017–2018 CFO Participations and Head of Mergers & Acquisitions, 2018–February 2021 Group Treasurer (Treasury, Insurance and Mergers & Acquisitions), since March 2021 Group CFO and member of the Group Executive Committee
For information on his external mandates, see mandates in the Remuneration Report.