From 17 April 2015 to 30 June 2015 Chairman of the Board of Directors, from 1 July 2015 to 22 April 2022 Chairman, Delegate of the Board of Directors, and interim CEO, and since 22 April 2022 Executive Chairman of the Board of Directors (cf. 3.5). 1990 – 1993 KPMG Deutsche Treuhand Gesellschaft, Munich (D); 1993 – 1995 Head of Central Finance / Controlling JENOPTIK AG, Jena (D); 1996 – 2003 member of the Board of Directors, CFO, JENOPTIK AG, Jena (D); 2003 – 2007 Chairman of the Board of Directors, CEO, JENOPTIK AG, Jena (D); 2007 – 2008 member of the Board of Directors of Franz Haniel & Cie. GmbH, Duisburg (D); since 2009 Chairman of the Board of Directors at Feintool International Holding AG, Lyss and interim CEO in 2009. Since 15 June 2015, Alexander von Witzleben has been a member of the Board of Directors of Artemis Holding AG, Hergiswil. This company has a shareholding of 22.10% in Arbonia and a shareholding of 50.1% in Feintool International Holding AG, Lyss. Alexander von Witzleben was a member of the executive management of Arbonia on an interim basis until 22 April 2022. Aside from this, he has no material business relationships with Arbonia or its subsidiaries.

Other activities and vested interests: member of of the Board of Directors of KAEFER Management KG, Bremen (D); Chairman of the Supervisory Board of PVA TePla AG, Wettenberg (D); Chairman of the Supervisory Board of VERBIO Vereinigte BioEnergie AG, Leipzig (D); member of the Supervisory Board of Siegwerk Druckfarben AG & Co. KGaA, Siegburg (D); member of the Board of Directors of Artemis Holding AG, Hergiswil NW; Chairman of the Board of Directors of Feintool International Holding AG, Lyss BE.