Education
1971
Obtained a doctoral degree in mathematics from the University of Vienna.
Professional experience
Born in 1949.
He has been a member of the Board of Directors of Sistema PJSFC since 2017.
А member of Strategy Committee; Audit, Finance and Risks Committee and Nomination, Remuneration and Corporate Governance Committee and Investor Relations and Dividend Policy Committee of Sistema Board of Directors.
Mr Sommer is very active in the area of corporate governance, he is chairman of the Supervisory Board of VF Ukraine and member of the Board of Directors of Tata Consultancy Services, India.
1980-1986
Managing director, German branch, Sony Group.
1986-1990
The Chairman of the Management Board, Sony Deutschland.
1990-1995
Was the President and CEO, Sony Corporation USA, since 1993 — Sony Europe.
1995-2002
Chairman of the Management Board, Deutsche Telekom AG.
2004-2009
Member of the Board of Directors, Motorola Inc., USA.
2005-2011
A member of the Board of Directors (independent director) of Sistema, the Chairman of the Investor Relations Committee of the Board.
2009-2011
First vice president, Head of the Telecom Assets Business Unit of Sistema.
2009-2019
Сhairman of the Board of Directors of MTS PJSC.