Report on Payments to Government for the Year 2025

Kosmos Energy Ltd. has prepared a report of payments made to governments for the year ended December 31, 2025 in accordance with the Reports on Payments to Governments Regulations 2014 (2014/3209) as amended by the Reports on Payments to Governments (Amendment) Regulations 2015 (2015/1928). The Payments to Government data are reflective of select payments made to government entities by Kosmos Energy Ltd. These payments are categorized consistent with the Report on Payments to Governments Regulations 2014 (as amended in December 2015) (the Regulations).

The report of payments made to governments has been provided to the National Storage Mechanism and is available on the company's website: https://www.kosmosenergy.com/wp-content/uploads/2026/05/Kosmos-2025-Payments-to-Government.pdf

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. 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.

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