• born in 1965
• German nationality
   

Training

• Graduate engineer in production engineering, Düsseldorf University of Applied Sciences

Work experience

• since 6 May 2024 Chairman of the Executive Board (CEO) of VARTA AG
• 9/2022 - today Founder and CEO Ostermann Solutions GmbH, Meerbusch
• 11/2022 - today Co-founder of m3 Holding GmbH, Düsseldorf
• 11/2022 - today Management-Buy-Out Frauenthal Powertrain Plettenberg GmbH, Plettenberg
• 1/2021 - 12/2022 Member of the Executive Board of Frauenthal Holding AG, CEO Automotive Division, Vienna
• 1/2019 - 12/2020 COO and Managing Director iSi Automotive Holding, Vienna
• 1/2009 - 1/2019 Executive Vice President and President & CEO EXIDE EMEA, EXIDE TECHNOLOGIES SAS, Gennevilliers (from 9/2015 with additional responsibility for APAC)
• 4/2005 - 12/2008 Member of the Executive Board Frauenthal Holding AG, Vienna
• 10/2000 - 4/2005 Managing Director (Président-Directeur-Général) for STYRIA HOLDING s.a.s. (Member of the Frauenthal Group), Châtenois les Forges
• 1/1999 - 12/2003 Managing Director STYRIA FEDERN GMBH (Member of the Frauenthal Group), Düsseldorf
• 1/1998 - 12/1998 Technical Manager STYRIA FEDERN GMBH, Düsseldorf
• 1/1997 - 12/1997 Production Manager STYRIA FEDERN GMBH, Düsseldorf
• 4/1994 - 12/1996 Head of Development STYRIA FEDERN GMBH, Düsseldorf

• born in 1969
• German nationality
   

Training

• University degree in electronics and technical informatics Dipl.-Ing. (Hochschule Aalen)

Work experience

• since 2022 Chief Technical Officer VARTA AG
• since 2020 Managing Director VARTA Microbattery GmbH, Ellwangen, VARTA Micro Production GmbH, Nördlingen, VARTA Innovation GmbH, Graz, Managing Director EMEA Consumer Batteries (Shenzhen) Co., Ltd., Chin
• since 2013 CTO VARTA Microbattery
• 2008 - 2012 VARTA Head of Application Department, contact person for sales, product management, development.
• 2003 - 2008 VARTA Microbattery GmbH - Head of Production Lithium-Polymer Cells
• 2000 - 2002 VARTA Microbattery GmbH - Development and management of the test laboratory for lithium-ion cell
• 1997 - 2000 DSM measurement technology, Aalen Development engineer

Further commitment

• Advisory board of e-mobil BW - state agency for new mobility solutions  
• Member of the Research and Innovation Committee of IHK Ostwürttemberg  
• Trustee of the ZSW Baden-Württemberg  
• Board member of the industry association "Kompetenznetzwerk Lithium-Ionen-Batterien" (KLiB)  
• Scientific advisory board "Batterieforum Deutschland 
• Board member of ZVEI Batteries Association
• Trustee of Aalen University   
• Member of the Industry Committee of IHK Ostwürttemberg  
• Expert of IEC - TC35 "Primary cells and batteries"     
• Expert of DKE - K372 "Primary batteries"   
• Expert of DKE - K371 "Accumulators"     
• Advisory board of WBZU Ulm (further education center for innovative energy technologies) 

• born 1968
• German citizen

Training

• Degree in Business Administration, Technical University of Munich, Diplom-Wirtschaftsingenieur
• Degree in Engineering, Technical University of Munich

Work experience

• since 15^th May 2023 Chief Financial Officer (CFO) VARTA AG
• 2017 - 2023 CFO, Knaus Tabbert AG
• 2016 - 2018 CEO HTP Automotive Holding GmbH
• 2016 - 2017 CEO/CFO http Investments, Neue Halberg Guss GmbH
• 2011 - 2016 CEO/CFO HTP Investments, REUM Group, Hardheim (exit in 12/2015), Geiger Automotive Group, Murnau (exit in 10/2013)
• 11/2007 - 12/2010 Head of Business Unit Controlling, Hoerbiger Automatisierungstechnik Holding GmbH, Schongau, Managing Director Hoerbiger Elektronik GmbH, Ammerbuch
• 03/2004 - 10/2007 Head of Controlling/Accounting, Hoerbiger Kompressortechnik GmbH, Schongau, Hoerbiger Service GmbH, Schongau
• 03/2002 - 07/2003 Head of Controlling, BetaResearch GmbH, Unterföhring
• 11/2000 - 02/2002 Specialist Business Planning, BetaResearch GmbH, Unterföhring
• 04/1998 - 10/2000 Consultant, AMCG Unternehmensberatung GmbH, Munich

• born 1980
• Austrian citizen

Training

• University degree, Master of Business Administration, Corporate Restructuring & Merger and Acquisitions, Università Bocconi, Milan.
• University Degree, Master in International Economics and Business Studies, Corporate Restructuring / M&A, Leopold-Franzens University Innsbruck

Work experience

• since 15 June 2023 Chief Restructuring Officer (CRO) on the Executive Board of VARTA AG
• 2022 - 2023 CRO Oettinger Brauerei GmbH
• 2019 - 2022 Chief Restructuring Officer, Knoll Autoteile GmbH
• 2018 - 2019 Senior Manager Auxil Partner
• 2018 - present Managing Partner M18 GmbH
• 2012 - 2018 Managing Partner Aeternitas Partners Private ltd.
• 2007 - 2012 CRO Giesswein AG
• 2005 - 2007 Senior Consultant, Structure Management Partner GmbH