Tundra Oil & Gas to Pursue Texas and Louisiana Gulf Coast Opportunities Following Commitment from Denham Capital

| Oil & Gas
Woodlands-based E&P Company Comprised of Proven Team of Entrepreneurs Brings Established Track Record of Success from the Private Sector

Houston, Texas – (February 20, 2013) – Tundra Oil & Gas announced today that it has secured an equity commitment from Denham Capital, an energy and resources-focused global private equity firm. Tundra is a newly formed E&P company that will pursue low-risk acquire and exploit opportunities along the Gulf Coast, primarily South Texas and South/Central Louisiana.

Tundra is led by three accomplished oil and gas entrepreneurs who have a track record of value creation: Ronnie Montgomery, CEO; Gary Lee, VP of Operations; and Ed Hutchinson, VP of Engineering. Prior to founding Tundra, the three successfully implemented a similar strategy at J&S Oil & Gas with private sector backing.

Tundra is launching its operations with an initial asset base acquired from J&S Oil & Gas. The company will seek to bolster this position via strategic acquisitions within their area of focus.

About Denham Capital

Denham Capital is a leading energy and resources-focused global private equity firm. With over $7.9 billion of invested and committed capital, Denham makes direct investments in the energy and resources sectors, including businesses involving oil and gas, metals and minerals, and power and renewables. With offices in Boston, Houston, London, São Paulo and Perth, Denham invests across the globe. Denham invests across all stages of the corporate lifecycle, from exploration and development projects to mature, operating businesses, and all segments of the capital structure. For more information about Denham Capital, visitwww.denhamcapital.com.