Andy J. Mah

Andy J. Mah is President and Chief Executive Officer of Advantage Oil & Gas Ltd. Mr. Mah has over 30 years of experience in the oil and gas industry. Prior to joining Advantage, Mr. Mah served as President of Ketch Resources Trust from September 2005 until June 2006 and was Chief Operating Officer from January to September 2005. From August 1996 to January 2005, Mr. Mah was the Executive Officer and Vice President, Engineering and Operations of Northrock Resources Ltd., which became a wholly owned subsidiary of Unocal in 2002. Prior thereto, Mr. Mah had increasing managerial and technical positions with Sceptre Resources Ltd. and BP Canada. Mr. Mah has significant experience in the western Canadian Basin in all facets of the upstream oil and gas industry, and worked on U.S. and international projects during his time with Unocal and BP Canada. Mr. Mah is a graduate of the University of Saskatchewan with B.S. in chemistry in 1980 and a B.S. in chemical engineering in 1982. He is a member of APEGA and the Society of Petroleum Engineers, previously was on the board of governors of the Canadian Association of Petroleum Producers — CAPP — and has served on other oil and gas boards.