THEON - Key Persons


Alexandra Andreou

Job Titles:
  • Acquisition

Christian Hadjiminas - CEO

Job Titles:
  • CEO
  • Vice - Chairperson of the Board of Directors and CEO
Christian Hadjiminas graduated in 1981 from Columbia University with a B.A. in Economics (Magna Cum Laude) and in 1983 from Wharton Business School (University of Pennsylvania) with an MBA in Business and Finance. After working as a Senior Trader at Phibro-Salomon Inc. in 1987, he has set up his first company in New York and soon thereafter in 1989, he has moved his business in Greece and established EFA VENTURES in Athens. Mr. Hadjiminas is today the owner of EFA GROUP, a "marketing" construct referring to a set of companies with a leading-edge position in the international market with more than 30 years of experience, in the fields of Aerospace, Security, Defense, and Industrial cooperation. Mr. Hadjiminas is also the President of the Hellenic Entrepreneurs Association - EENE and Head of EENE International, as well as Founder and Honorary President of the Wharton Alumni Club of Greece.

Dimitrios Parthenis

Job Titles:
  • Acquisition

Dimitris Papageorgiou

Job Titles:
  • Acquisition

Hans-Peter Bartels

Job Titles:
  • Non - Executive Director
Hans-Peter Bartels graduated from the Max Planck School in Kiel in 1980. After he finished his military service, he began studying political science, sociology and folklore at the Christian Albrechts University in Kiel in 1981, which he completed in 1986 with a master's degree. Bartels was a member of the German Bundestag from 1998 until his appointment as Defense Commissioner in 2015. From 2015 to 2020 he served as the Armed Forces Commissioner of the German Bundestag and has been President of the Society for Security Policy since May 2022. He has been a member of the supervisory board of ThyssenKrupp Marine Systems since 2023.

Ioanna Velaora

Job Titles:
  • Acquisition

Maria Athienitou

Job Titles:
  • Non - Executive Independent Director
Maria Athienitou graduated in 1997 from Reading University with a B.A. degree in Management and Business Administration and in 1997 from the City Business School (CASS) with MSc degree in Internal Auditing and Management. Since 2000, she has been working at current PricewaterhouseCoopers Ltd in Cyprus where she has been focused on providing regulatory compliance services in financial sector. She holds the Advanced Certificate of Professional Competency from the CySEC and the Certified Accounting Technician qualification from the Association of Certified Chartered Accountants.

Nikos Malesiotis

Job Titles:
  • Head of M & a and IR

Philippe Jean Mennicken

Job Titles:
  • Business Development Director
  • Executive Director
  • Acquisition
Philippe Mennicken graduated in 2000 from Université de Liège, Belgium with a B.A. in Mechanical Engineering, graduated in 2001 from College of Aeronautics, Cranfield University, UK with an MSc in Aerospace Dynamics and in 2006 from Management Research Centre, University of Bristol with an MSc in Strategic Management. After working as a product support engineer at Goodrich Aero and technical sales manager at SKF Aerospace in the UK, he then worked as a Offset & Industrial Cooperation Manager at Epicos S.A. in Athens. He joined Theon Sensors S.S. in Athens in April 2010 as the Business Development Manager and has been acting in his current positions as the Business Development Director since January 2013.

Stathis Potamitis

Job Titles:
  • Non - Executive Director
Stathis Potamitis graduated from University of Toronto (Canada) with a B.A. degree in 1997, LL.B degree in 1986 and with an M.A. degree in 1991. He is the founder and managing partner of an independent law firm, Potamitisvekris, where he has been a managing partner since 1996 and has been acting in his current position as senior partner since 2022. He is admitted to practice law in Athens, Thessaloniki and previously was a qualified attorney at law in the State of New York.

Stelios Anastasiou

Job Titles:
  • Executive Director
Stelios Anastasiou graduated from LCCI Higher Stage with a degree in accounting and from the English College Commercial Department. He is a certified accountant technician, a member of the Association of Accounting Technicians and a licensed auditor by the Ministry of Finance of Cyprus. He worked at PwC in Nicosia (Cyprus) between 1987 and 1999, where he got promoted to the role of Senior Manager. Since 1999, he has worked at Dynasource Consultancy Limited where he has been acting in his current positions as Director.