b'SurinameWe are the operator for petroleum contracts covering Block 42 and Block 45 offshore Suriname,which are located within the Guyana Suriname Basin, along the Atlantic transform margin of northernSouth America. Suriname lies between Guyana to the west and French Guyana to the east. TheGuyana-Suriname Basin was formed by tensional forces associated with the opening of the AtlanticOcean as South America separated from Africa in the Mid Cretaceous period. The Suriname basin isanalogous to the working petroleum systems of the West African transform margin. The emergingpetroleum system in Suriname has been proven by the presence of onshore producing fields and mostrecently by nearby discoveries offshore Guyana, including the Liza-1 well.Suriname Block 42 and Block 45 are positioned centrally in the Suriname-Guyana Basin, andlocated to the east of the recent play opening Liza-1 oil discovery. Likewise, the blocks are alsopositioned to the northwest of the French Guyana Basins Zaedyus oil discovery.We believe that there are several independent play types of importance on our operated blocks. Ofnote are the listric faulted structural stratigraphic play of the Lower Cretaceous and thestratigraphically trapped Upper Cretaceous plays similar to those discovered in the Jubilee Fieldoffshore West Africa. The recent oil discovery in Guyana (Liza-1) in the same geologic basin provides apositive point of calibration for the Upper Cretaceous stratigraphic play in Suriname.The Tambaredjo and Calcutta Fields onshore Suriname, as well as the Liza-1 well discoveryoffshore Guyana, demonstrate that a working petroleum system exists, and geological and geochemicalstudies suggest the hydrocarbons in these fields were generated from source rocks located in theoffshore basin. The source rocks are believed to be analogous in age to those which have chargednumerous fields in offshore West Africa.In June 2018, the Anapai-1A exploration well was drilled to a total depth of approximately 4,600meters and was designed to test lower Cretaceous reservoirs in a structural trap on the flank of thebasin. The prospect was fully tested, encountering high quality reservoirs in the targeted zones, but didnot find hydrocarbons. The well has been plugged and abandoned.In July 2018, we entered into the second exploration phase in blocks 42 and 45, which now expiresin September 2021. The second phase carried a one well commitment per block that has been met forboth blocks with the Anapai-1A and Pontoenoe-1 exploration wells.In October 2018, the Pontoenoe-1 exploration well was drilled to a total depth of approximately6,200 meters and was designed to test late Cretaceous reservoirs in a structural trap charged from oilmature Albian and Cenomanian-Turonian source kitchens. The prospect was fully tested but did notdiscover commercial hydrocarbons. High-quality reservoir was encountered, but the primary explorationobjective proved to be water bearing. The well has been plugged and abandoned.The well results are being integrated into the ongoing evaluation of the remaining prospectivity inour Suriname acreage position.Sao Tome and PrincipeDuring 2015 and 2016, Kosmos acquired acreage in Blocks 5, 6, 11 and 12 offshore Sao Tome andPrincipe in the Gulf of Guinea. We are the operator of Blocks 5, 11 and 12, and Galp Energia SaoTome E Principe, Unipessoal, LDA (Galp), a wholly-owned subsidiary of Petrogal, S.A., is theoperator of Block 6. In March 2018, as part of our alliance with BP, we entered into petroleumcontracts covering Blocks 10 and 13 with the Democratic Republic of Sao Tome and Principe. Wepresently have a 35% participating interest in the blocks and the operator, BP, holds a 50%participating interest. The national petroleum agency, Agencia Nacional Do Petroleo De Sao Tome EPrincipe (ANP STP) has a 15% carried interest in the blocks through exploration. These blocks cover22'