6 June 2025

Results of Annual Stockholders Meeting

The 2025 Annual Meeting of Stockholders of Kosmos Energy Ltd. (the "Company") was held on June 5, 2025. There were 478,009,062 shares of common stock entitled to vote at the meeting, and a total of 426,743,085 shares of common stock (approximately 89.27%) were represented at the meeting.

The proposals voted upon at the 2025 Annual Meeting of Stockholders and the final results of the vote on each proposal were as follows:

Proposal 1 - To elect three Class III directors to a three-year term to serve until the 2028 annual stockholders meeting.

Each nominee for director was elected by a vote of the stockholders as follows:

Proposal 2 - To ratify the appointment of Ernst & Young LLP as our independent registered public accounting firm for the fiscal year ending December 31, 2025 and to authorize the Company's Audit Committee of the Board of Directors to determine their remuneration.

The proposal was approved by a vote of the stockholders as follows:

Proposal 3 - To provide a non-binding, advisory vote to approve named executive officer compensation.

The compensation of the Company's named executive officers was approved by a nonbinding, advisory vote of the stockholders as follows: