UINEA Gulf of Guinea BLOCK 11 BLOCK 12 BLOCK 6 BLOCK 5 BLOCK 10 BLOCK 13 GABON SÃO TOMÉ PRÍNCIPE SÃO TOMÉ AND PRÍNCIPE Kosmos first entered São Tomé and Príncipe by acquiring acreage in four offshore blocks – 5, 6, 11 and 12 – in 2015 and 2016. In early 2018, Kosmos acquired two additional offshore blocks – 10 and 13. In total, these six blocks cover an area of approximately 38,600 square kilometers and are adjacent to a proven petroleum system in Equatorial Guinea and Gabon. Upon entering São Tomé and Príncipe in 2016, Kosmos established a local office on São Tomé island and appointed a country manager. We currently employ seven local staff members, working in areas such as accounting, finance, external affairs, HSE, and procurement. Galp Energia, a Portuguese oil and gas company, holds a non-operated stake as a partner in blocks 5, 11, and 12, and an operated position in block 6. Equity in these four blocks is also shared with Equator and the Agencia Nacional do Petroleo de São Tomé e Príncipe (ANP-STP), on behalf of the government. Kosmos, Galp, Equator, and ANP-STP intend to make a decision regarding exploration drilling in 2019. Our partner in blocks 10 and 13 is BP. The work program in these blocks will be phased, which will enable Kosmos and BP to develop a deeper understanding of the basin and create the best chance of exploration success. In the first four-year phase, Kosmos and BP will acquire additional seismic data and will analyze the data to decide on next steps with regard to drilling. SEISMIC PHASE 1 PHASE 2 PHASE 3 PHASE 4 PHASE 5 PHASE 6