News Release Details

KOSMOS ENERGY ANNOUNCES FIRST LNG CARGO AT THE GREATER TORTUE AHMEYIM PROJECT IN MAURITANIA AND SENEGAL

DALLAS, Texas, April 17, 2025 - Kosmos Energy (NYSE/LSE: KOS) notes the announcement today from bp plc (operator) that the first cargo of liquified natural gas (LNG) has been safely loaded from the Greater Tortue Ahmeyim (GTA) LNG project, offshore Mauritania & Senegal.  

The first shipment of LNG was transferred to the "British Sponsor" LNG carrier from Golar LNG's floating liquefied natural gas (FLNG) vessel located approximately 10 kilometers offshore, where the natural gas was liquefied and stored. The first cargo was fully loaded at approximately 174,000 cubic meters of LNG. A second LNG carrier is currently waiting near the hub terminal in preparation for the second cargo lifting.

The announcement of the first cargo shipment follows first gas production in late 2024 and first LNG production in February. The first cargo lifting is when Kosmos and its partners start to recognize revenue and is another key milestone for the project. The FLNG vessel has a nameplate capacity of 2.7 million tonnes per annum.

Commenting on the first LNG cargo lifting at GTA, Chairman and Chief Executive Officer Andrew G. Inglis said: "The first LNG cargo is a significant milestone, enabling Mauritania and Senegal to become gas exporting nations from this project of national strategic importance. We continue to work with bp, SMH and PETROSEN to safely ramp up the project to its full capacity as well as deliver expansion that leverages the infrastructure put in place for this initial phase."

About Kosmos Energy

Kosmos Energy is a leading deepwater exploration and production company focused on meeting the world's growing demand for energy. We have diversified oil and gas production from assets offshore Ghana, Equatorial Guinea, Mauritania, Senegal and the Gulf of America (formerly the U.S. Gulf of Mexico). Additionally, in the proven basins where we operate we are advancing high-quality development opportunities, which have come from our exploration success. Kosmos is listed on the NYSE and LSE and is traded under the ticker symbol KOS. As an ethical and transparent company, Kosmos is committed to doing things the right way. The Company's Business Principles articulate our commitment to transparency, ethics, human rights, safety and the environment. Read more about this commitment in the Kosmos Sustainability Report. For additional information, visit  www.kosmosenergy.com.

Forward-Looking Statements

This press release contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934. All statements, other than statements of historical facts, included in this press release that address activities, events or developments that Kosmos expects, believes or anticipates will or may occur in the future are forward-looking statements. Kosmos' estimates and forward-looking statements are mainly based on its current expectations and estimates of future events and trends, which affect or may affect its businesses and operations. Although Kosmos believes that these estimates and forward-looking statements are based upon reasonable assumptions, they are subject to several risks and uncertainties and are made in light of information currently available to Kosmos. When used in this press release, the words "anticipate," "believe," "intend," "expect," "plan," "will" or other similar words are intended to identify forward-looking statements. Such statements are subject to a number of assumptions, risks and uncertainties, many of which are beyond the control of Kosmos, which may cause actual results to differ materially from those implied or expressed by the forward-looking statements. Further information on such assumptions, risks and uncertainties is available in Kosmos' Securities and Exchange Commission ("SEC") filings. Kosmos undertakes no obligation and does not intend to update or correct these forward-looking statements to reflect events or circumstances occurring after the date of this press release, except as required by applicable law. You are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date of this press release. All forward-looking statements are qualified in their entirety by this cautionary statement.

Management does not provide a reconciliation for forward looking non GAAP financial measures where it is unable to provide a meaningful or accurate calculation or estimation of reconciling items and the information is not available without unreasonable effort. This is due to the inherent difficulty of forecasting the occurrence and the financial impact of various items that have not yet occurred, are out of our control or cannot be reasonably predicted. For the same reasons, management is unable to address the probable significance of the unavailable information. Forward looking non GAAP financial measures provided without the most directly comparable GAAP financial measures may vary materially from the corresponding GAAP financial measures.

Investor Relations

Jamie Buckland

+44 (0) 203 954 2831

jbuckland@kosmosenergy.com

Media Relations

Thomas Golembeski

+1-214-445-9674

tgolembeski@kosmosenergy.com