Corporate Governance

Information on the Supervisory Board

The Supervisory Board of LEONI AG monitors and advises the Management Board in running the company in accordance with the German Co-determination Act. The Board has an equal number of six members representing shareholders and six members representing employees. Its composition is, furthermore, in line with the latest Code requirements concerning diversity and appropriate participation of women as well as the criteria of independence, experience, internationalism and expertise of the Supervisory Board members.


Member Function Date of birth Profession Place of residence
Klaus Rinnerberger Chairman 2 March 1964 Member of the Board of Directors of Pierer Industrie AG Gießhübl, Austria
Franz Spieß1 Deputy Chairman 25 January 1957 First Representative of IG Metall trade union, office Schwabach Büchenbach
Günther Apfalter   21 August 1960 President Magna Europe & Asia, Magna International Europe GmbH Linz, Austria
Mark Dischner1   22 December 1973 Chairman of General Works Council of LEONI AG Greding
Carolin Geist1   3 July 1990 Political secretary Nuremberg
Tom Graf   20 February 1956 CEO of Huf Group Frankfurt/Main
Martin Hering1   5 July 1979 Chairman of Works Council of LEONI Bordnetz-Systeme GmbH Kitzingen Wiesenbronn
Sina Maier1   29 November 1997 Technical Purchasing Officer Freystadt
Dr Ulla Reisch   22 April 1968 Partner at the law firm of Urbanek Lind Schmied Reisch Rechtsanwälte OG Riederberg, Austria
Karin Sonnenmoser   8 October 1969 Independent advisor and member of Supervisory Boards and Advisory Boards of various companies Bildstein, Austria
Klaus Wolff1    2 May 1967 Head of Development Support, LEONI Bordnetz-Systeme GmbH Ochsenfurt
Dr Lorenz Zwingmann   16 September 1964 Former CFO; Independent advisor and member of Supervisory Boards and Advisory Boards of various companies Trittau

1 employee representative


LEONI AG’s Supervisory Board formed six committees. The committees raise the efficiency of Supervisory Board work by dealing in detail with complex subjects outside the actual meetings and preparing the findings for the vote by the whole Board.

There are the following committees according to the Supervisory Board’s Rules of Procedure:

Arbitration Committee pursuant to Section 27 (3) of Germany’s Co-Determination Act
Klaus Rinnerberger (Chairman), Sina Maier, Karin Sonnenmoser, Franz Spieß
Audit Committee
Dr Lorenz Zwingmann (Chairman), Karin Sonnenmoser, Franz Spieß, Klaus Wolff
Personnel Committee
Klaus Rinnerberger (Chairman), Mark Dischner, Franz Spieß, Dr Lorenz Zwingmann
Nomination Committee
Klaus Rinnerberger (Chairman), Dr Ulla Reisch, Karin Sonnenmoser
Strategy Committee
Günther Apfalter (Chairman), Carolin Geist, Tom Graf, Martin Hering, Sina Maier, Klaus Rinnerberger
Special Committee
Dr Ulla Reisch (Chairwoman), Mark Dischner, Tom Graf, Martin Hering, Klaus Rinnerberger, Franz Spieß