meeting table with phone

Board of Directors

HELLENiQ ENERGY Holdings SA is governed by an 11-member Board of Directors.

HELLENiQ ENERGY Holdings S.A. Board of Directors

Spilios Livanos holds a BA in Politics and Economics from the University of Massachusetts at Amherst (USA) and an MA in International Relations from Reading University (UK).

He worked as advisor in the EU Commission’s Social Fund  (Brussels) and  as an executive on corporate development of private enterprises ( Greece). In 2002, he founded a construction and real estate management company operating in Greece and abroad, which he runs until today.

He was elected as an MP for Nea Dimokratia in the national election of 2007 and of 2019 (region of Aetolia-Akarnania). In 2019, he served as parliamentary representative for New Democracy.

From January 2021 to February 2022, he served as Minister of Rural Development and Food.

In his two terms as MP, he sat on the Standing Parliamentary Committees of “Defense and Diplomacy”, “Economic Affairs”, “Cultural and Educational Affairs”, “Public Administration, Public Order and Justice” and on the Special Standing Committee of the “Financial Statement and the General Balance Sheet and the Implementation of the State Budget”

From 2016 to 2019 he chaired the Board of Directors of “Estia Panagiotis Kanellopoulos.”

In November 2022, he was elected Vice President of the North Atlantic Treaty Association (NATO) Parliamentary Assembly where he currently serves as Head of the Greek Delegation.


Holds an Economics degree specialising in Econometrics from the University of Essex England and is a Fellow (FCA) member of the Institute of Chartered Accountants in England and Wales (ICAEW).

He began his career in 1989 with KPMG in London, specializing in banking and large multinational Groups before joining the international food and drink group DIAGEO in 1993, to assume senior Greek and European positions in Finance and Business development. During 1998-1999 he also worked for the development of the food sector business (Pillsbury) in Middle East and North Africa. Between 2000-2002 he worked as Chief Financial Officer and Chief Restructuring Officer in an ASE listed high-tech company (part of LEVENTIS Group) and in 2003 he joined PETROLA HELLAS as Chief Financial and IT Officer.

After the legal merger and operational integration of PETROLA HELLAS  with HELLENIC PETROLEUM, he was appointed as CFO of the new Group in 2005 and became a member of the Group’s Executive Committee.  In 2012 he assumed the responsibility for International subsidiaries and he was Deputy CEO during the period 2014-2015 and 2017- 2019 when he became CEO.

Mr. Α. Shiamishis serves as a board member of the Hellenic Federation of Enterprises (SEV)  and is Chairman of the BoD of  SEV Council for Sustainable Development (BCSD). He is a founding member of the American Hellenic Chamber of Commerce  (AMCHAM) board of Corporate Governance and is also a member in a number of professional bodies including the Economic Chamber of Greece and ICAEW specialized faculties.


As General Manager of Strategic Planning and New Business for the Group, he is responsible for the strategic planning and management of new business development in natural gas, electricity, renewable energy sources, exploration and production, strategic projects, and participations (DEPA/Elpedison/ASPROFOS) and the Group’s representation in international organizations. He has been a member of the Board of Directors of the European Petroleum Refiners Association as a regular or alternate member since 2012. He joined HELLENIC PETROLEUM Group in 2007.

He held the position of Director of Strategic Planning and Development in an international group of companies (SETE S.A.), based in Geneva, Switzerland, from 1998 to 2006, where he was responsible for overseeing the group’s energy portfolio.

Previously, he worked for a number of technical and executive positions at Stone & Webster, Molten Metal Technology, Merck, Dow Corning, and Dow Chemical in the United States between 1993 and 1997.

He holds an MBA degree (1998) from Harvard Business School and M.Sc. (1993) and B.Sc. (1992) degrees in Chemical Engineering from the Massachusetts Institute of Technology (MIT).


He graduated from the University of Athens with a Degree in Economics (Department of Politics and Economics). He completed his postgraduate studies at the University of Lancaster (England) and he obtained a Postgraduate Diploma in Economics and a Masters of Arts (M.A.) in Marketing and Finance.

He worked at senior positions with Greek and international banks in Athens, Greece, and he was Chief Financial Officer (CFO) and Chief Operating Officer (COO) with Hellenic Telecoms (OTE S.A.). Following the acquisition of OTE by Deutsche Telekom (DT), he joined OTE’s Board of Directors as an Executive member and DT’s European Management Board. Additionally, he was sitting, as a NED, on the Boards of Greek listed companies.

Currently, he is Chair of the Special Liquidations Committee of the Bank of Greece. 


Mr. Theodoros-Achilleas Vardas is a Member of the Board of Directors of HELLENIC PETROLEUM since 2003. He also serves as Vice Chairman of the BoD of EKO SA, the Group’s marketing company.

He was born in Athens in 1950. He has a Degree in Chemical Engineering from the Swiss Federal Institute of Technology in Zurich and a Ph.D. from the Systems Engineering Department of the same institute.

He began his professional career in 1979 at the Latsis Group, where he worked in key positions and in 1981 as General Manager of Petroleum Products Trading. At the same time, from 1988 to 2003, he was the Deputy CEO and Member of the BoD of Petrola Hellas SA.

Since October 2003, following the merger of Petrola Hellas SA and HELLENIC PETROLEUM SA until the end of 2016, he served as a Management Consultant of HELLENIC PETROLEUM SA.

He also served as a Member of the BoDs of Papastratos SA (1999-2003), DEPA SA (2004-2016), and ELPEDISON BV (2008-2016).

He is married and the father of two children.


Mr. Vrettos was born in Athens in 1962. He obtained his diploma as a Chemical Engineer from the University of Karlsruhe (Germany) and a Ph.D. in Computational Solid State Physics from Kyoto University (Japan).

From 1990 to 1991, he worked for the Bayer Group Japan, and then until 2014 at The Boston Consulting Group in Düsseldorf, New York, Athens, and Tokyo as a Senior Partner and Managing Director, specializing in a number of fields including energy, the financial sector, shipping, industrial goods, health care, telecommunications, retail, and airlines.

From 2013 until today he is a member of the Board of Directors and a seed investor in the German technology company nanoSaar AG, and since 2015 advisor and consultant to family offices.

He has been a member of the General Council of the Federation of Greek Industries, the Executive Committee of the Hellenic-American Chamber of Commerce, and the Board of Directors of the Federation of Young Entrepreneurs. He has also authored publications on economic studies, as well as articles on financial issues.


Mr. Tridimas was born in Athens in 1963. He is a graduate of the University of Athens, with a degree in Legal Sciences, and holds a Master of Science (LL.M.) and a Ph.D. from the University of Cambridge with a specialization in Harmonisation of Securities Regulation in the European Community.

He is a lawyer in Athens since 1987 and a Barrister in England and Wales since 2000 and has appeared before the European Court of Justice, the General Court of the European Union, the Supreme Court of the United Kingdom, the European Court of Human Rights, as well as investment arbitration courts.

He previously held academic positions at the Universities of Birmingham, Southampton, Cambridge, and London (Queen Mary), while he has also worked at the European Court of Justice as a Référendaire. He has taught in a number of universities in Europe, the U.S.A, and Canada.

He is currently Professor of European Law and Director of the Center for European Law at Dickson Poon School of Law, at King’s College London, while he is also Professor and Distinguished Researcher (Nancy A. Patterson Distinguished Faculty Scholar) at Pennsylvania State University School of Law (Penn State Law) and Visiting Professor at the College of Europe in Bruges. He works as a Barrister at Matrix Chambers in London.

He has experience in international and European affairs, having been an advisor to European institutions on a number of legal issues as well as the Republic of Cyprus during the negotiations on Brexit, as well as the Greek Presidency of the European Union between 2002-2003 with emphasis on issues of enlargement of the European Union.

From 2005-2013 he was an independent non-executive member of the Board of Directors of EFG Eurobank, and since February 2020, he is a non-executive member of the General Council of the Financial Stability Fund.

He has published numerous legal studies and has written important textbooks on European Law.


Stavroula Kampouridou holds a B.Sc. in Computer Science from the University of Athens and an M.Sc. in Electrical Engineering from Stanford University (on a full university scholarship).

She has over 19 years of experience in IT, FinTech (Financial Technology), and Innovation. She began her career at IBM Greece as a Hardware Sales Specialist, and later advanced to the role of Client Systems Manager. She then joined the National Bank of Greece (NBG Group) as an Executive Advisor, contributing to the establishment of the bank's Procurement Group and later serving as IT Procurement Manager.

Currently, she serves as the CEO of DIAS S.A., the Greek Automated Clearing House (ACH), a position she has held since January 2021. Under her leadership, DIAS S.A. has made notable advancements, including migrating to TIPS, and enhancing the reach of instant payments across Europe. In 2023, DIAS processed 406 million transactions valued at €450 billion and achieved significant growth in invoiced transactions, revenues, and net profits for the third consecutive year.

Additionally, Ms. Kampouridou was a Technology Advisor to the Governor of the Bank of Greece and Head of the FinTech Innovation Hub, where she led initiatives such as the creation of a Regulatory Sandbox.
Since June 2022, she has been an independent non-executive member of the Board of Directors at Fourlis Holdings S.A. and a member of the Audit Committee.


Costas Mitropoulos is a management consultant with extensive experience in strategy, M&A and restructuring in  energy, finance, and the industry.

He started his career as management consultant with Coopers & Lybrand in the UK and has served since in senior management positions and leadership roles in various organizations, including banks.

In 1989, he founded KANTOR Management Consultants S.A.,where he served as Executive Chairman of the Board of Directors, until 2008.  From 2008 to 2011, he served as Executive Chairman of Eurobank EFG Equities S.A. and Head of Global Equity, Investment Banking, Brokerage & Private Equity of the Eurobank EFG Group. During the period 2011-2012, he was the first CEO of the Hellenic Republic Asset Development Fund S.A. (HRADF). From 2013 to 2019, he was Executive Director and Executive Board member of PwC Greece, responsible for developing the advisory practice. For a period of 16 months he held the position of CEO at PQH, the Single Special Liquidator, of sixteen Greek banks (2017-2018). From 2019 to 2020, he served as the Chairman of the Board of Directors of ATTICA BANK.

He is a mechanical and electrical engineer from the National Technical University of Athens, with post graduate studies in Business Administration and Economics, holding an M.Sc. from Imperial College and a Ph.D. from the London Business School.  

He is currently a member of the Board of Directors of MOTODYNAMICS S.A. (independent non-executive), PLAISIO S.A. (independent non-executive), ELTRAK S.A. (independent non-executive), the Cyprus Development Bank Ltd (independent non-executive) and of the Institute of Economic and Industrial Studies (ΙΟΒΕ).

He has published articles on strategy and energy in scientific journals and in professional magazines and newspapers and has authored a book on Privatisations in Greece.


Anna Rokofyllou is a lawyer, member of the Athens Bar. She holds a Law degree from the Athens University and a Master’s Degree  in Community  Law from  the University of Paris 1 Panthéon-Sorbonne and the University of Paris-Sud 11 (Seaux) .

She worked as a free-lance lawyer and, for the period 1994 το 2006, as a legal advisor at the Special Legal Department of the Ministry of Foreign Affairs.

Since 1994 she has been actively involved in Local Government. She was elected four times Minicipal Counselor  in the Municipality of Athens and twice Regional Counselor of Attica.

She chaired the Organisation of Culture, Sports and Youth of the Municipality of Athens from September 2019 to September 2021 and served as Deputy Mayor of Equality, Policies of Discrimination and Interracial Violence from September 2021  to January 2023.

As of January 2023, she chairs the Youth and Lifelong Learning Foundation. 


Born in Athens in 1964. Attorney at law graduated from the University of Athens, Law School (LL.B.) and the University of Kent at Canterbury, UK (LL.M on European Competition Law, Intellectual Property, International Business Transactions, and Ph.D.).

His fields of expertise include commercial law, competition law, electronic communications, and media,  intellectual and industrial property law, information technology law with an emphasis on electronic payments, mergers, corporate law, and on corporate restructuring and financing.

During 2000 – 2004 he acted as the Head of the Legal Department of the Hellenic Telecommunications and Post Commission (ΕΕΤΤ), and during 2005 - 2006 he served as a Board member in the Board of Directors of ΕΕΤΤ. From 2004 up to 2007 he was a member of the Board of Directors of the Hellenic Copyright Organization (OPI), and from 2009 up to 2011, he acted as Vice-Chairman of the Board of Directors of the Hellenic Industrial Property Organisation (OVI). He has participated in various legislative committees (working on the drafting of legislation for societees anonymes, public procurement, electronic public procurements, consumer protection, intellectual property, electronic communications and competition).

Since 2003 he teaches electronic communications law in the Interdepartmental Post-Graduate Program of the Department of Informatics and Telecommunications and the Department of Economics of the National & Kapodistrian University of Athens, «Management and Economics of Telecommunication Networks». He has various publications on issues of commercial law in academic journals and in foreign newsletters on competition law and corporate law.