Mr. Sommer is deputy chairman of the Friedrich-Ebert-Stiftung, member of the board of trustees of Volkswagen Stiftung and former chairman of the Confederation of German Trade Unions (DGB).

Mr. Sommer is deputy chairman of the Friedrich-Ebert-Stiftung, member of the board of trustees of Volkswagen Stiftung and former chairman of the Confederation of German Trade Unions (DGB).