ABOUT KOSMOS ENERGY Kosmos is a well-capitalized, pure play deepwater oil and gas company with growing production, a pipeline of development opportunities and a balanced exploration portfolio along the Atlantic Margins. Our assets include growing production offshore Ghana and Equatorial Guinea, a competitively positioned Tortue gas project in Mauritania and Senegal and a sustainable exploration program balanced between proven basins (Equatorial Guinea), emerging basins (Mauritania, Senegal and Suriname) and frontier basins (Côte d’Ivoire and São Tomé and Príncipe). As an ethical and transparent company, Kosmos is committed to doing things the right way. Our Business Principles articulate the company’s commitment to transparency, ethics, human rights, safety, and the environment. Kosmos Energy is listed on the New York Stock Exchange and London Stock Exchange, traded under the ticker symbol KOS. For additional information, visit our website www.kosmosenergy.com. 2  Letter to Stakeholders 4  Company Overview/ Financial Highlights 5 Business Principles in Action - Responsibilities to Stakeholders - Ethical Conduct - Our Workplaces - Kosmos and the Environment - Kosmos in Society - Commercial Responsibilities 19  Project Lifecycle and Operations Map 20  Côte d’Ivoire 22  Equatorial Guinea 24  Ghana 29  Special Feature Kosmos Innovation Center 32  Mauritania 36  Morocco 38  São Tomé and Príncipe 42  Senegal 46  Suriname 50  Western Sahara 54 IPIECA/API/IOGP Content Index 57  2017 Performance Data