As a holding company, Drees & Sommer is the owner of the independent operational units of the Drees & Sommer Group. The operational units are either regional companies or Expert Teams with wide-ranging autonomy. The entire Group uses the network to add value for clients.

The main shareholders in Drees & Sommer AG (stock corporation) are the active and former Partners, each of whom has a minimum shareholding. All Partners have joined together to form a consortium whose constitution safeguards the long-term continuity of the company’s development. As a result, the company is independent of third parties.

Currently, Drees & Sommer is managed by three Partners acting as the Executive Board in close cooperation with the operational Partners and the Managing Directors.

The Partners are have committed to maintaining the company’s successful strategy and corporate culture.

Supervisory Board

Chairman of the Board

Prof. Dr. Hans Sommer
(Chairman of the Board)

Dr. Johannes Fritz
(Vice Chairman)

Dr. Bernd Gaiser
Eva Dietl-Lenzner
Prof. Holger Hagge
Volker Mack

Executive Board

Dierk Mutschler 
Steffen Szeidl 



Prof. Dr. Michael Bauer
Martin Becker
Mirco Beutelspacher
Jörg Ewald-Lincke
Prof. Phillip Goltermann

Thomas Häusser
Sascha Hempel
Stefan Heselschwerdt
Thomas Hofbauer
Roland Huber

Thomas Jaißle
Sascha Kilb
Daniel Kluck
Dr. Jürgen Laukemper
Martin Lutz

Dr. Peter Mösle
Dierk Mutschler
Norbert Otten
Christopher Vagn Philipsen
Frank Reuther

Ralph Scheer
Marc Schömbs
Matthias Schulle
Prof. Dr. Hans Sommer

Steffen Szeidl
Parick Theis
Bernhard Unseld
Prof. Jürgen M. Volm

Gabriele Walker-Rudolf
Markus Weigold
Jörg Wohlfarth
Rino Woyczyk