The grenke AG Supervisory Board

Personal information

Born on 13 November 1957 in Santiago de Chile

Milestones

• Jens Rönnberg studied business administration with an emphasis on banking, auditing, accounting and controlling at the Goethe University in Frankfurt am Main and graduated with a master’s degree in business administration.
• He started his career in 1986 at PwC in Frankfurt in the area of credit institution auditing and passed the tax consultant examination in 1990 and the auditor's examination in 1992. In 1993, he was appointed as a partner at PwC and was responsible for auditing a major bank and its domestic and foreign subsidiaries until 1998.
• At the end of 1998, he joined PwC UK in London as a partner, where he was responsible for foreign bank branches and subsidiaries until the end of 2001.
• He established the Foreign Bank division for PwC in Frankfurt at the end of 2001, taking over audit responsibility for a large number of foreign bank branches and subsidiaries.
• In the period from 2006 to 2010, Jens Rönnberg established the Transaction Services Financial Services division and was involved in numerous transactions in the areas of banking and non-performing loans. From 2008 to 2012, he was also the auditor responsible for the European Central Bank.
• From 2010 to mid-2018, he assumed responsibility for establishing PwC’s Financial Services division in Vienna, Austria. Since 2014, as the responsible partner, he has been advising a major German banking group in consulting projects.
• From 2001 to 2018, he was also a member of the Audit Committee for Auditors at the Chamber of Auditors.
• Since June 2018, he has been working as an auditor/tax consultant in his own practice at his place of residence.
   

Memberships

Jens Rönnberg was appointed to the Supervisory Board of grenke AG in November 2019.  He was elected Chairman of the Supervisory Board of grenke AG with effect from 16 May 2023.

Jens Rönnberg was elected to the Supervisory Board and as Chairman of the Supervisory Board of grenke Bank AG in September 2021. He was elected Deputy Chairman of the Supervisory Board of grenke Bank AG with effect from 1 January 2023.

Personal information

Born on 28 September 1985 in Baden-Baden
 

Milestones

• Moritz Grenke studied statistics at the Ludwig-Maximilians-Universität in Munich and graduated in February 2011 as Diplom-Statistiker Univ.
• He started his career in 2011 in the Business Consultants & Risk Analytics department at the credit agency Deltavista GmbH in Karlsruhe.
• In 2014, he joined grenke AG in Baden-Baden in the Controlling, where he became team leader of the Controlling – Data Analytics & Models department in 2015. In 2016, he was appointed Director Controlling – Data Analytics & Models/Reporting.
• In mid-2017, he moved with his team to the subsidiary grenke digital GmbH in Karlsruhe and continued as Director Controlling – Data Analytics & Models/Reporting. The focus here was increasingly on the development of digital innovations.
• At the beginning of 2020, he and his team returned to grenke AG. He worked as Director of Controlling – Data Analytics & Models/Reporting until March 2021.
• From August 2021 to March 2023, he was Managing Director of grenke Stiftung Verwaltungs GmbH in Baden-Baden, which manages the assets of the non-profit grenke Stiftung in trust and promotes a variety of cultural and charitable causes.

Memberships

Moritz Grenke was elected to the Supervisory Board of grenke AG in May 2023.

He has been a member of the Supervisory Board of grenke Bank AG since February 2017.

Memberships in comparable domestic and foreign supervisory bodies

none

Personal data

Born on 9 May 1970 in Görlitz

Milestones

• Norbert Freisleben studied economics at the University of Hohenheim starting 1991. After a semester abroad in 1993 at the Aarhus School of Business, Denmark, where he took International Management, International Finance, Marketing and Scandinavian Studies, he completed his studies in 1996 by obtaining a degree in Economics with distinction.
• From 1997 to 2021 he worked for the auditing firm KPMG and passed the Certified Public Accountant exam in 1998. His work included the preparation and auditing of annual financial statements in accordance with German and international law, IFRS and US-GAAP conversions, assistance with IPOs and initial and subsequent consolidations. He was actively involved as a lecturer in KPMG's internal training, designed programmes on international accounting and held client seminars on international accounting in Germany and abroad.
• He is also active in professional development and academic teaching. Since 1998 he has been active at the Academy for International Accounting in the fields of IFRS, US-GAAP and Group accounting in German and English-speaking countries. He has held a lectureship in financial management and balance sheet analysis at the Faculty of Economics and Law at Pforzheim University since 2004 and has contributed to Beck Verlag's Munich Commentary on Accounting Law and Stock Corporation Law since 2006.
• He is managing director of Karl Häge Verwaltungs GmbH in Langenau (since 2006).

Memberships

In July 2021 Norbert Freisleben was appointed as a Member to the Supervisory Board of grenke AG.

Memberships in comparable domestic supervisory bodies

GANÉ AG, Aschaffenburg
GANÉ Investment AG, Frankfurt am Main
 

Awards

Norbert Freisleben received the Bavarian Rescue Medal in June 2016.

Personal data

Born on 8 December in 1976 in Hilden
 

Milestones

• After passing the first state law examination at the University of Cologne in 2002, he passed the second state law examination and was admitted to the bar in 2005.
• He began his professional career in 2005 as a lawyer at Schlütter Bornheim Seitz, a law firm in Cologne (now Seitz Rechtsanwälte, Steuerberater PartG mbB).
• In November 2011, he was appointed partner in this law firm. He still holds this position today. Nils Kröber heads up the tax law, criminal tax law and tax consultancy divisions.
• Since September 2014, he has also been a managing partner of DeaDia Ventures GmbH in Cologne.
• In March 2015, he co-founded SKS Steuerberatungsgesellschaft mbH in Cologne, where he still holds the position of managing partner. SKS Steuerberatungsgesellschaft GmbH operates the Seitz Unternehmeroffice.
• Since March 2021, he has also been a partner in HKS GmbH Wirtschaftsprüfungsgesellschaft Steuerberatungsgesellschaft in Cologne.
   

Memberships

In July 2021 Nils Kröber was appointed as a Member to the Supervisory Board of grenke AG.  In May 2023 he was confirmed as a member of the Supervisory Board for a five-year term.

Personal information

Born on 7 October 1969 in Ruma, Serbia

Milestones

• Dr Ljiljana Mitic studied business administration in Dortmund and Plymouth (UK) where she completed a degree in Business Administration. In 1999 she earned her Doctorate at the University of Plymouth. In 1999, she received her PhD from the University of Plymouth. In her thesis entitled "Enviropreneurial Management. An effective approach to cope with the ecological challenge", she investigated whether an entrepreneurial management style has an influence on a company's ecological approach.
• She began her career in 1992 at EDS Electronic Data Systems GmbH. 
• In 1999, Dr Mitic moved to WestLB Systems GmbH in Düsseldorf, where she was responsible for the IT business as Co-General Manager.
• From 2005 to 2010, she assumed overall responsibility for customers in the banking and insurance sector as Sales Director Financial Services Industry Germany at Hewlett Packard GmbH.
• From 2010 to 2011, she headed up the worldwide banking and insurance business as Senior Vice President at Siemens IT Solutions and Services GmbH in Munich.
• From 2011 to 2015, she served as Executive Vice President at Atos SE, managing global banking and insurance as Global Head of Financial Services Markets. She was a member of the Executive Committee at Atos.
• Since 2016, Dr Mitic has been working as a self-employed management consultant specialising in IT, financial services and start-ups.

Memberships

Dr Ljiljana Mitic was elected to the grenke AG Supervisory Board in May 2015 and confirmed in May 2019 and in April 2024 for further five years.

She was elected to the Supervisory Board and as Deputy Chairwoman of the Supervisory Board of grenke Bank AG in September 2021 with effect from 1 October 2021. She was elected Chairwoman of the Supervisory Board of grenke Bank AG with effect from 1 January 2023.

Memberships in comparable domestic and foreign supervisory bodies

Computacenter PLC

Personal information

Born on 17 September 1961 in Eppstein
 

Milestones

• Manfred Piontke studied business administration at the Johann Wolfgang Goethe University after completing his banking apprenticeship and working at Nassauische Sparkasse. He graduated in June 1989 with a degree in business administration.
• From 1989 to 1990, he worked as an equity analyst at Credit Suisse First Boston in Frankfurt am Main.
• In 1991, he moved to the globally active private bank Julius Baer, an international benchmark in asset management, where he worked as Head of Equity Analysis until 1998.
• In 1997, he founded Manfred Piontke Vermögensverwaltung in Hofheim am Taunus.
• From 1998 to 2000, he worked at Deutsche Bank AG in Frankfurt am Main. There he worked as Deputy Head of Equity Analysis and was responsible, among other things, for the IPO of grenke AG in 2000.
• In 2000, he founded FPM Performance Management AG in Frankfurt am Main, where he was fund manager, board member and majority shareholder until 2013.
• In 2005, he founded Manfred Piontke Vermögensverwaltung e.K. in Eppstein, where he worked as owner and portfolio manager. Since 2014, the company has been trading as MMPM Manfred Piontke Portfolio Management e.K. He has been Managing Director of the company since 2021. 
   

Memberships

In April 2024, Manfred Piontke was elected to the Supervisory Board of grenke AG.