APEX INTERNATIONAL ENERGY SECURES $500 MILLION INITIAL INVESTMENT COMMITMENT FROM WARBURG PINCUS

Experienced industry executives lead new Egypt-focused energy company Cairo, Egypt and Houston, Texas

(May 26, 2016)—Apex International Energy (www.apexintl.com), a new independent oil and gas exploration and production company focused on Egypt, today announced that Warburg Pincus, a global private equity firm focused on growth investing, has agreed to an initial line-of-equity commitment of up to $500 million to the company.

Apex International Energy plans to build an exploration and production business of scale through asset acquisitions and capital investments in drilling, infrastructure and production enhancement to deliver long-term profitable growth in production and reserves. Apex International Energy will also pursue farm-in transactions and participate in new concession bid rounds. Apex will initially focus on Egypt and plans to expand into other countries in the Middle East and North Africa as attractive opportunities present themselves.

Apex International Energy is led by industry veterans with extensive experience growing profitable upstream oil and gas assets, with a particularly strong track record in Egypt. The company’s leaders have over 275 combined years of industry experience, including 100 years in Egypt in key roles growing Apache Corporation’s highly regarded operations in Egypt.

Apex International Energy’s founder and chief executive officer is Roger B. Plank, who has worked in the energy industry for more than three decades, most recently serving as Apache Corporation’s President and Chief Corporate Officer. Thomas M. Maher, President and Chief Operating Officer, was most recently the Region Vice President and Country Manager for Apache Corporation in Egypt during which time it grew into the nation’s largest oil and gas producer. Apex International Energy will have a strong board of Directors including Peder Bratt, Rodney J. Eichler and Somit Varma.

Plank said, “The combination of a talented team, experienced in Egypt, a world-renowned investing partner and a proven hydrocarbon province provide the necessary ingredients to build a substantial E&P business to the benefit of our shareholders, employees and the people of Egypt.”

Maher said, “For an opportunistic E&P company, Egypt holds abundant resources that can be tapped using modern exploration and production technologies coupled with an aggressive operating approach to build a profitable business while maintaining a commitment to safety and environmental responsibility.”

Somit Varma, Managing Director at Warburg Pincus, said, “The Apex International Energy founders have an unparalleled track record of creating value in the energy sector of Egypt. It is a highly experienced team that we believe can create a business of scale taking advantage of the opportunities available in the current commodity market environment. We look forward to working closely with the team as they pursue their growth-oriented strategy.”

The Group will have offices in Cairo and Houston.

The equity for this investment is coming from affiliates of Warburg Pincus Private Equity XII, L.P. and Warburg Pincus Energy, L.P.

Greenhill & Co. acted as financial advisor to Apex International Energy and Vinson & Elkins LLP acted as legal advisor.

***

About Apex International Energy

Apex International Energy is a new independent oil and gas exploration and production company focused on Egypt. Apex International plans to build an exploration and production business of scale through asset acquisitions and capital investments in drilling, infrastructure and production enhancement to deliver long-term profitable growth in production and reserves. Apex International will also pursue farm-in transactions and participate in new concession bid rounds.

Apex International Energy’s founder and Chief Executive Officer is Roger B. Plank and Thomas M. Maher is President and Chief Operating Officer. Apex International Energy will have a strong board of Directors including Peder Bratt, Rod J. Eichler and Somit Varma.

Apex International Energy will have offices in Cairo and Houston. For more information, please visit www.apexintl.com.

About Warburg Pincus

Warburg Pincus LLC is a leading global private equity firm focused on growth investing. The firm has more than $40 billion in private equity assets under management. The firm’s active portfolio of more than 120 companies is highly diversified by stage, sector and geography. Warburg Pincus is an experienced partner to management teams seeking to build durable companies with sustainable value. Founded in 1966, Warburg Pincus has raised 15 private equity funds, which have invested more than $58 billion in over 760 companies in more than 40 countries. For more than two decades, Warburg Pincus has invested or committed over $13 billion across more than 75 energy investments around the world with a focus on upstream, midstream and downstream oil and gas; energy services and technology; power generation and transmission; alternative energy and renewables; and mining and metals. Notable investments include Antero Resources (NYSE: AR), Bill Barrett Corporation (NYSE: BBG), Broad Oak Energy, Encore Acquisition Company, Kosmos Energy (NYSE: KOS), Laredo Petroleum (NYSE: LPI), MEG Energy (TSX: MEG), Newfield Exploration (NYSE: NFX), Spinnaker Exploration and Targa Resources (NYSE: TRGP, NGLS).

Contacts

Apex International Energy

Glenn Joyce glenn.joyce@apexintl.com

Warburg Pincus

Sarah Gestetner +44 207 306 0377 sarah.gestetner@warburgpincus.com

Mary Zimmerman +1 212 878-9207 mary.zimmerman@warburgpincus.com