Board of Directors


Alastair McGregor


Alastair McGregor has been actively involved in the oil & gas sector since 2003. He is currently chief executive of O.G. Energy, which holds the Ofer Global Group’s broader energy interests, and O.G. Oil & Gas, a company that holds directly or indirectly oil & gas exploration and production interests onshore and offshore.  He leads the O.G. Energy Senior Management Committee, driving the strategy for the Ofer Global Group’s energy activities.  Mr. McGregor is also a director of New Zealand Oil & Gas. 

In addition, Mr McGregor is chief executive of Omni Offshore Terminals Limited, a leading integrated provider of floating production and storage and offloading (FPSO & FSO) solutions to the offshore oil & gas industry. Omni’s operations span the globe from New Zealand, Australia, South East Asia, Middle East and South America. Prior to entering the oil & gas industry Alastair spent 12 years as a banker with Citigroup and Salomon Smith Barney. Alastair holds a BEng from Imperial College, London and an MSc from Cranfield University in the UK. Mr McGregor joined the board on 23 February 2018and serves as Chairman.



Samuel Kellner


Samuel Kellner has held a variety of senior executive positions with the Ofer Global Group since joining the Group in 1980. He has been deeply involved in various Ofer Global Group’s business lines, with a particular emphasis on offshore oil and gas, shipping and real estate, and has advised the Ofer Global Group companies on investments in a variety of investment managers, hedge funds and private equity funds. Most recently, Mr Kellner served as president of Global Holdings Management Group (US) Inc. where he led North American real estate acquisition, development and financing activities. Mr. Kellner serves as a director of O.G. Energy, O.G. Oil & Gas and is the Chairman of the Board of Directors of New Zealand Oil & Gas.  He is also an executive director of the main holding companies for the Zodiac shipping group and Omni Offshore Terminals, a leading provider of floating production, storage and offloading (FSO and FPSO) solutions to the offshore oil and gas industry. As a member of the O.G. Energy Senior Management Committee, he helps drive the strategy for the Ofer Global Group’s energy activities. Mr. Kellner graduated with a BA degree from Hebrew University in Jerusalem. He has an MBA from the University of Toronto, and taught at the University of Toronto while working toward a PhD in Applied Economics. Mr Kellner was appointed on 23 Febnruary 2018.



Rod Ritchie


Rod Ritchie is a director of New Zealand Oil & Gas Limited. Rod joined the board of New Zealand Oil & Gas in 2013. He graduated with a BSc, University of Tulsa. He has 38 years of experience as a line manager and a Health, Safety, Security and Environment executive in the oil and gas industry – including being the corporate senior vice president of HSSE at OMV based in Vienna. He is a member of the Society of Petroleum Engineers.



Andrew Jefferies


Andrew Jefferies is managing director of New Zealand Oil & Gas Limited. He started his career with Shell in Australia after graduating with a BE Hons (Mechanical) from the University of Sydney in 1991, an MBA in technology management from Deakin University in Australia, and an MSc in petroleum engineering from Heriot - Watt University in Scotland. Andrew is also a graduate of the Australian Institute of Company Directors (GAICD), and a Certified Petroleum Engineer with the Society of Petroleum Engineers. He has worked in oil and gas in Australia, Germany, the United Kingdom, Thailand and Holland.



Peter Hood


Peter Hood is a professional chemical engineer with 45 years’ experience in the development of projects in the resources and chemical industries. He began his career with WMC Ltd and then was chief executive officer of Coogee Chemicals Pty Ltd and Coogee Resources Ltd from 1998 to 2009. He is a graduate of the Harvard Business School Advanced Management Programme and is currently Chairman of Matrix Composites and Engineering Ltd and a non-executive director of GR Engineering Ltd. He has been Vice- Chairman of the Australian Petroleum Production and Exploration Association Limited (APPEA), Chairman of the APPEA Health Safety and Operations Committee, and is a past President of the Western Australian and Australian Chambers of Commerce and Industry.



Richard Malcolm


Richard Malcolm is a professional geoscientist with 34 years of varied oil and gas experience within seven international markets. He began his career as a Petroleum Geologist with Woodside Petroleum in Perth exploring for oil and gas on the Northwest Shelf. He spent ten years with Ampolex Limited (Perth and Sydney) as a Senior Explorationist and then Exploration Manager in Western Australia and Asset Manager in Northern & Eastern Australia. Following Mobil’s takeover of Ampolex, Mr Malcolm was appointed manager of Mobil’s assets in Papua New Guinea. Three years later he joined OMV, initially as Exploration Manager for Australia & New Zealand and later as Exploration & Reservoir Manager for OMV Libya, General Manager Norway and in 2006, Managing Director of OMV UK. Between 2008 and 2013, Mr Malcolm was chief executive of Gulfsands Petroleum plc, an AIM listed production, exploration and development company with operations in Syria, Tunisia, Morocco, USA and Colombia. He is currently a director of Larus Energy.



Marco Argentieri


Mr Argentieri is a Director of New Zealand Oil and Gas Limited, Senior Vice President and General Counsel for O.G. Energy, and a member of the Board of Directors of both O.G. Energy and O.G. Oil & Gas.

Prior to O.G. Energy, Mr Argentieri worked extensively in finance, offshore oil services and shipping. Mr Argentieri started his career as an attorney at the New York offices of Skadden, Arps, Slate, Meagher & Flom LLP and Latham & Watkins LLP. He holds a B.A. from the University of Rochester, a J.D. from New York University and an MBA from Columbia University.