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Management Team

David Fields

Managing Director, Corporate Finance USA

David Fields joined Greran Group in 2017 as Managing Director, Corporate Finance in USA. He has substantial experiences and knowledges in M&A and Corporate Finance in energy sector as well as operational and technical leadership in oil industry. Mr. Fields served as the CFO of Carhop Auto Sales and Finance, a private equity owned business from 2014 – 2016. From 2011 to 2014, he worked as Vice President, Power and Utilities Group, IBD at Deutsche Bank. Mr. Fields worked in power & Utilities group at Barclays Capital (Lehman Brothers) between 2007 – 2011. Prior to that, Mr. Fields took various operational roles at Sunoco Inc from 2002 – 2006. He served as chief engineer in the US Navy during 1997 – 2002.

Mr. Fields has a Master of BA in Finance and Management at Kellogg School of Management, Northwestern University and a Bachelor of Science in History at US Navy Academy.

Violeta Berniczky


Violeta Berniczky joined the Group in 2001 and has held various executive positions within the finance and accounting departments of the various operating businesses. Mrs Berniczky became the Treasurer in 2014. She is involved with all financial aspects of the businesses within the Group.

Mrs Berniczky has a BA in International Trade from The Bucharest University of Economic Studies, Romania and an MBA in International Finance from St. John's University New York, USA.

Betty Cheung

Director Corporate Affairs

Betty Cheung joined Greka Limited in Hong Kong office since 2004 and is currently Director, Corporate Affairs of the Family Office. She is responsible for the administration and human resources management of the executive team. In her current capacity, Ms Cheung oversees the Foundation and the Future Leaders Programme. Prior to joining Greka, she worked at Burberry and Fendi within the advertising department as well as a business analyst for Nortel Networks.

Ms Cheung holds a Master of Business Administration from California State University, Hayward and a Bachelor of Business Administration, Finance from California State University, Los Angeles.