KOS / Kosmos Energy Ltd. - SEC-Einreichungen, Jahresbericht, Proxy Statement

As filed with the Securities and Exchange Commission on May 29, 2026

As filed with the Securities and Exchange Commission on May 29, 2026 Registration No.

CALCULATION OF FILING FEE TABLES Kosmos Energy Ltd. Table 1: Newly Registered Securities

Ex-Filing Fees CALCULATION OF FILING FEE TABLES S-8 Kosmos Energy Ltd. Table 1: Newly Registered Securities Security Type Security Class Title Notes Fee Calculation Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Equity Common Stock, par value $0.01 (1) Other 16,000,000 $ 2.92 $ 46,720,000.00 0.0001381 $ 6,452.03

KOSMOS ENERGY LTD. LONG TERM INCENTIVE PLAN (amended and restated as of March 4, 2026) TABLE OF CONTENTS

Exhibit 99 KOSMOS ENERGY LTD. LONG TERM INCENTIVE PLAN (amended and restated as of March 4, 2026) TABLE OF CONTENTS Page Section 1. Purpose 1 Section 2. Definitions 1 Section 3. Eligibility 6 Section 4. Administration 6 Section 5. Shares Available for Awards 7 Section 6. Options 8 Section 7. Stock Appreciation Rights 8 Section 8. Restricted Stock and RSUs 9 Section 9. Performance Awards 10 Section

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 28, 2026 KOSMOS ENERGY LTD. (Ex

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 28, 2026 KOSMOS ENERGY LTD.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 5, 2026 KOSMOS ENERGY LTD. (Exa

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 5, 2026 KOSMOS ENERGY LTD.

Dated 24 February 2026 Share Sale and Purchase Agreement relating to the sale and purchase of shares in Kosmos International Petroleum, Inc. KOSMOS ENERGY OPERATING as Seller PANORO ENERGY BLOCK G LIMITED as Purchaser PANORO ENERGY ASA as Purchaser G

Exhibit 10.1 Dated 24 February 2026 Share Sale and Purchase Agreement relating to the sale and purchase of shares in Kosmos International Petroleum, Inc. between KOSMOS ENERGY OPERATING as Seller and PANORO ENERGY BLOCK G LIMITED as Purchaser and PANORO ENERGY ASA as Purchaser Guarantor Table of Contents 1. Interpretation 1 2. Sale and purchase 12 3. Conditions 12 4. Consideration 13 5. Pre-Comple

AMENDMENT TO THE DEEPWATER TANO PETROLEUM AGREEMENT DATED 10 MARCH 2006 THE GOVERNMENT OF THE REPUBLIC OF GHANA (Represented by the Ministry of Energy and Green Transition) AND GHANA NATIONAL PETROLEUM CORPORATION GNPC EXPLORATION AND PRODUCTION LIMI

Exhibit 10.4 AMENDMENT TO THE DEEPWATER TANO PETROLEUM AGREEMENT DATED 10 MARCH 2006 AMONG THE GOVERNMENT OF THE REPUBLIC OF GHANA (Represented by the Ministry of Energy and Green Transition) AND GHANA NATIONAL PETROLEUM CORPORATION AND GNPC EXPLORATION AND PRODUCTION LIMITED COMPANY AND TULLOW GHANA LIMITED AND KOSMOS ENERGY GHANA HC AND KOSMOS ENERGY GHANA INVESTMENTS AND PETROSA GHANA LIMITED E

KOSMOS ENERGY ANNOUNCES FIRST QUARTER 2026 RESULTS Delivers Record Quarterly Production

Exhibit 99.1 NEWS RELEASE KOSMOS ENERGY ANNOUNCES FIRST QUARTER 2026 RESULTS Delivers Record Quarterly Production DALLAS - May 5, 2026- Kosmos Energy Ltd. (“Kosmos” or the “Company”) (NYSE/LSE: KOS) announced today its financial and operating results for the first quarter of 2026. For the quarter, the Company generated a net loss of $226 million, or $0.45 per diluted share. When adjusted for certa

BOND TERMS Kosmos Energy GTA Holdings 11.25% senior secured USD 550,000,000 bonds 2026/2031 ISIN NO 0013712281

Exhibit 10.2 BOND TERMS FOR Kosmos Energy GTA Holdings 11.25% senior secured USD 550,000,000 bonds 2026/2031 ISIN NO 0013712281 Contents Clause Page 2. THE BONDS 20 3. THE BONDHOLDERS 23 4. ADMISSION TO LISTING 24 5. REGISTRATION OF THE BONDS 24 6. CONDITIONS FOR DISBURSEMENT 24 7. REPRESENTATIONS AND WARRANTIES 28 8. PAYMENTS IN RESPECT OF THE BONDS 30 9. INTEREST 33 10. REDEMPTION AND REPURCHASE

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2026 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 001-

AMENDMENT TO THE WEST CAPE THREE POINTS PETROLEUM AGREEMENT DATED 22 JULY 2004 THE GOVERNMENT OF THE REPUBLIC OF GHANA (Represented by the Ministry of Energy and Green Transition) AND GHANA NATIONAL PETROLEUM CORPORATION GNPC EXPLORATION AND PRODUCTI

Exhibit 10.3 AMENDMENT TO THE WEST CAPE THREE POINTS PETROLEUM AGREEMENT DATED 22 JULY 2004 AMONG THE GOVERNMENT OF THE REPUBLIC OF GHANA (Represented by the Ministry of Energy and Green Transition) AND GHANA NATIONAL PETROLEUM CORPORATION AND GNPC EXPLORATION AND PRODUCTION LIMITED COMPANY AND TULLOW GHANA LIMITED AND KOSMOS ENERGY GHANA HC AND KOSMOS ENERGY GHANA INVESTMENTS AND PETROSA GHANA LI

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐   Check the appropriate box: ☐     Preliminary Proxy Statement ☐     Confidential, for Use of the Commission Only (as permitted

ARS

We are a leading deepwater exploration and production company focused on meeting the world’s growing demand for energy.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐   Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☐ Def

97,500,000 Shares of Common Stock Kosmos Energy Ltd.

TABLE OF CONTENTS  Filed Pursuant to Rule 424(b)(5)  Registration No. 333-280362 Prospectus Supplement (To Prospectus dated June 20, 2024) 97,500,000 Shares of Common Stock Kosmos Energy Ltd. We are offering 97,500,000 shares of our common stock, par value $0.01 per share. Our common stock is listed on The New York Stock Exchange (“NYSE”) and The London Stock Exchange (“LSE”) under the symbol “KOS

Security Type

Calculation of Filing Fee Tables S-3 Kosmos Energy Ltd. Table 1: Newly Registered and Carry Forward Securities ☐Not Applicable Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial

97,500,000 Common Shares KOSMOS ENERGY LTD. UNDERWRITING AGREEMENT

EXHIBIT 1.1 97,500,000 Common Shares KOSMOS ENERGY LTD. UNDERWRITING AGREEMENT March 10, 2026 Barclays Capital Inc. 745 Seventh Avenue New York, New York 10019 Stifel, Nicolaus & Company, Incorporated 787 Seventh Avenue, 11th Floor New York, New York 10019 Ladies and Gentlemen: 1. Introductory. Kosmos Energy Ltd., a Delaware corporation (the “Company”) proposes, subject to the terms and conditions

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 12, 2026 (March 10, 2026) KOS

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 12, 2026 (March 10, 2026) KOSMOS ENERGY LTD.

SUBJECT TO COMPLETION, DATED MARCH 10, 2026

TABLE OF CONTENTS The information in this prospectus supplement and the accompanying prospectus is not complete and may be changed.

KOSMOS ENERGY LIMITED Future Reserves and Income Attributable to Certain Interests Derived Through Certain Production Sharing Contracts SEC Parameters As of December 31, 2025

Exhibit 99.1 KOSMOS ENERGY LIMITED Estimated Future Reserves and Income Attributable to Certain Interests and Derived Through Certain Production Sharing Contracts SEC Parameters As of December 31, 2025 RYDER SCOTT COMPANY PETROLEUM CONSULTANTS Kosmos Energy Limited – SEC Parameters February 6, 2026 Page 2 /s/ Tosin Famurewa /s/ Amara N. Okafor Tosin Famurewa, P.E., S.P.E.C. Amara N. Okafor, P.E. T

KOSMOS ENERGY ANNOUNCES FOURTH QUARTER AND FULL YEAR 2025 RESULTS

Exhibit 99.1 NEWS RELEASE KOSMOS ENERGY ANNOUNCES FOURTH QUARTER AND FULL YEAR 2025 RESULTS DALLAS - March 2, 2026- Kosmos Energy Ltd. (“Kosmos” or the “Company”) (NYSE/LSE: KOS) announced today its financial and operating results for the fourth quarter of 2025. For the quarter, the Company generated a net loss of $377 million, or $0.79 per diluted share. When adjusted for certain items that impac

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 2, 2026 KOSMOS ENERGY LTD. (E

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 2, 2026 KOSMOS ENERGY LTD.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2025 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 001-35167

List of Subsidiaries

Exhibit 21.1 List of Subsidiaries Subsidiary Jurisdiction of Incorporation Kosmos Energy Ltd. Delaware Kosmos Energy Delaware Holdings, LLC Delaware Kosmos Energy Holdings Cayman Islands Kosmos Energy LLC Texas Kosmos Energy Operating Cayman Islands Kosmos Energy Ventures Cayman Islands Kosmos Energy Finance International Cayman Islands Kosmos Energy International Cayman Islands Kosmos Energy Deve

KOSMOS ENERGY ANNOUNCES SALE OF EQUATORIAL GUINEA PRODUCTION ASSETS TO PANORO ENERGY FOR UP TO $219.5 MILLION Optimizes portfolio, high grades capital allocation, lowers costs and enhances liquidity

Exhibit 99.1 NEWS RELEASE KOSMOS ENERGY ANNOUNCES SALE OF EQUATORIAL GUINEA PRODUCTION ASSETS TO PANORO ENERGY FOR UP TO $219.5 MILLION Optimizes portfolio, high grades capital allocation, lowers costs and enhances liquidity Dallas – February 24th, 2026 – Kosmos Energy (NYSE/LSE: KOS) (“Kosmos” or the “Company”) has entered into an agreement to sell its 40.375% non-operating working interest in th

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 24, 2026 KOSMOS ENERGY LTD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 24, 2026 KOSMOS ENERGY LTD.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 29, 2026 KOSMOS ENERGY LTD.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 29, 2026 KOSMOS ENERGY LTD.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 26, 2026 KOSMOS ENERGY LTD.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 26, 2026 KOSMOS ENERGY LTD.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 12, 2026 KOSMOS ENERGY LTD.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 12, 2026 KOSMOS ENERGY LTD.

KOSMOS ENERGY ANNOUNCES LAUNCH OF NORDIC BOND ISSUE AND CASH TENDER OFFER FOR 7.750% SENIOR NOTES DUE 2027

NEWS RELEASE KOSMOS ENERGY ANNOUNCES LAUNCH OF NORDIC BOND ISSUE AND CASH TENDER OFFER FOR 7.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 2, 2026 KOSMOS ENERGY LTD.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 2, 2026 KOSMOS ENERGY LTD.

TRANSITION AGREEMENT

Exhibit 10.1 TRANSITION AGREEMENT This Transition Agreement (the “Agreement”) is made and entered into on August 21, 2025, between Kosmos Energy, LLC (“Company”) and Christopher J. Ball (“Retiree” and, together with Company, the “Parties”). In connection with this Agreement, the Parties acknowledge that (a) Company is a premier international oil and gas exploration and production company (the “Bus

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2025 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number:

SENIOR SECURED TERM LOAN CREDIT AGREEMENT Dated as of September 24, 2025 By and among KOSMOS ENERGY GULF OF MEXICO OPERATIONS, LLC, as Borrower, THE OTHER LOAN PARTIES PARTY HERETO FROM TIME TO TIME, ANKURA TRUST COMPANY, LLC, as Collateral Agent, AN

Exhibit 10.3 THE LOANS WILL BE ISSUED WITH “ORIGINAL ISSUE DISCOUNT” (WITHIN THE MEANING OF SECTION 1273 OF THE INTERNAL REVENUE CODE) FOR U.S. FEDERAL INCOME TAX PURPOSES. UPON WRITTEN REQUEST TO THE BORROWER AT THE ADDRESS SET FORTH ON SCHEDULE 8.02, THE BORROWER WILL PROMPTLY MAKE AVAILABLE TO ANY LENDER THE FOLLOWING INFORMATION: THE ISSUE DATE, THE ISSUE PRICE, THE AMOUNT OF ORIGINAL ISSUE DI

ADVISORY AGREEMENT

Exhibit 10.2 ADVISORY AGREEMENT This Advisory Agreement (the “Agreement”) is made and entered into effective October 1, 2025 (the “Effective Date”), between Kosmos Energy, LLC (“Company”) and Chris Ball (“Advisor”) and sets forth the general terms and conditions under which Advisor will provide services to Company. Article I. Services and Compensation 1. Engagement: Company engages and retains Adv

KOSMOS ENERGY ANNOUNCES THIRD QUARTER 2025 RESULTS

Exhibit 99.1 NEWS RELEASE KOSMOS ENERGY ANNOUNCES THIRD QUARTER 2025 RESULTS DALLAS - November 3, 2025- Kosmos Energy Ltd. (“Kosmos” or the “Company”) (NYSE/LSE: KOS) announced today its financial and operating results for the third quarter of 2025. For the quarter, the Company generated a net loss of $124 million, or $0.26 per diluted share. When adjusted for certain items that impact the compara

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 3, 2025 KOSMOS ENERGY LTD.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 3, 2025 KOSMOS ENERGY LTD.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): September 24, 2025 KOSMOS ENERGY LT

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): September 24, 2025 KOSMOS ENERGY LTD.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 22, 2025 KOSMOS ENERGY LTD.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 22, 2025 KOSMOS ENERGY LTD.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2025 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 001-3

KOSMOS ENERGY ANNOUNCES SECOND QUARTER 2025 RESULTS

Exhibit 99.1 NEWS RELEASE KOSMOS ENERGY ANNOUNCES SECOND QUARTER 2025 RESULTS DALLAS - August 4, 2025- Kosmos Energy Ltd. (“Kosmos” or the “Company”) (NYSE/LSE: KOS) announced today its financial and operating results for the second quarter of 2025. For the quarter, the Company generated a net loss of $88 million, or $0.18 per diluted share. When adjusted for certain items that impact the comparab

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 4, 2025 KOSMOS ENERGY LTD. (

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 4, 2025 KOSMOS ENERGY LTD.

LETTER

July 23, 2025 Ronald Glass Vice President and Chief Accounting Officer Kosmos Energy Ltd.

Kosmos Energy Ltd. c/o Kosmos Energy, LLC 8176 Park Lane, Suite 500 Dallas, Texas 75231 Phone 214-445-9600 Fax 214 363 9024

July 2, 2025 Re: Kosmos Energy Ltd. Form 10-K for Fiscal Year Ended December 31, 2024 Filed February 24, 2025 File No. 001-35167 Mr. Robert Babula and Mr. Karl Hiller Division of Corporate Finance Securities and Exchange Commission 100 F Street N.E. Washington, DC 20549-4628 Dear Mr. Babula and Mr. Hiller: Kosmos Energy Ltd. (“Kosmos Energy,” the “Company” or “we”) is responding to the letter from

LETTER

June 24, 2025 Ronald Glass Vice President and Chief Accounting Officer Kosmos Energy Ltd.

Our Report on Payments to Government for the year ended December 31, 2024

Exhibit 99.1 Report on Payments to Government for the Year 2024 Kosmos Energy Ltd. has prepared the following consolidated report in respect of payments made to governments for the year ended 31 December 2024 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) and DTR 4.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM SD SPECIALIZED DISCLOSURE REPORT KOSMOS ENERGY LTD. (Exact Name of Registrant as Specified in its Charter) Delaware 001-35167 98-0686001 (State or other jurisdiction of incorp

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM SD SPECIALIZED DISCLOSURE REPORT KOSMOS ENERGY LTD.

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 5, 2025 KOSMOS ENERGY LTD.

Offer Letter, dated July 6, 2024, between Kosmos Energy, LLC and Josh

Exhibit 10.1 July 6, 2024 Josh Marion [email protected] Re: Promotion Dear Josh, Congratulations! I am pleased to offer you a promotion from VP, and Deputy General Counsel to SVP and General Counsel, effective July 8, 2024. Your new annual pay is $450,000 and your annual bonus target will increase from 50% to 75%. Your new annual pay will continue to be paid on a semi-monthly basis and you

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2025 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 001-

KOSMOS ENERGY ANNOUNCES FIRST QUARTER 2025 RESULTS

Exhibit 99.1 NEWS RELEASE KOSMOS ENERGY ANNOUNCES FIRST QUARTER 2025 RESULTS DALLAS - May 6, 2025- Kosmos Energy Ltd. (“Kosmos” or the “Company”) (NYSE/LSE: KOS) announced today its financial and operating results for the first quarter of 2025. For the quarter, the Company generated a net loss of $111 million, or $0.23 per diluted share. When adjusted for certain items that impact the comparabilit

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 6, 2025 KOSMOS ENERGY LTD.

ARS

2024 ANNUAL REPORTWe are a leading deepwater exploration and production company focused on meeting the world’s growing demand for energy.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☐ Defin

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐   Check the appropriate box: ☐     Preliminary Proxy Statement ☐     Confidential, for Use of the Commission Only (as permitted

KOSMOS ENERGY ANNOUNCES FOURTH QUARTER AND FULL YEAR 2024 RESULTS

Exhibit 99.1 NEWS RELEASE KOSMOS ENERGY ANNOUNCES FOURTH QUARTER AND FULL YEAR 2024 RESULTS DALLAS - February 24, 2025- Kosmos Energy Ltd. (“Kosmos” or the “Company”) (NYSE/LSE: KOS) announced today its financial and operating results for the fourth quarter of 2024. For the quarter, the Company generated a net loss of $7 million, or $0.01 per diluted share. When adjusted for certain items that imp

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 24, 2025 KOSMOS ENERGY LTD.

Kosmos Dealing Policy

Exhibit 19.0 KOSMOS ENERGY LTD. AND SUBSIDIARIES (“KOSMOS” OR THE “COMPANY) BUYING AND SELLING OF SECURITIES AND INSIDER TRADING POLICY (THE DEALING POLICY) 1 Exhibit 19.0 TABLE OF CONTENTS Page No. I.Summary of Kosmos’ Policy Concerning the Buying and Selling of Securities and Insider Trading................................................................ 4 II.The Use of Insider Information in Co

of Subsidiaries.

Exhibit 21.1 List of Subsidiaries Subsidiary Jurisdiction of Incorporation Kosmos Energy Ltd. Delaware Kosmos Energy Delaware Holdings, LLC Delaware Kosmos Energy Holdings Cayman Islands Kosmos Energy LLC Texas Kosmos Energy Operating Cayman Islands Kosmos Energy Ventures Cayman Islands Kosmos Energy Finance International Cayman Islands Kosmos Energy International Cayman Islands Kosmos Energy Deve

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2024 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 001-35167

Report of Ryder Scott Company, L.P.

Exhibit 99.1 KOSMOS ENERGY LIMITED Estimated Future Reserves and Income Attributable to Certain Interests and Derived Through Certain Production Sharing Contracts SEC Parameters As of December 31, 2024 /s/ Tosin Famurewa /s/ Amara N. Okafor Tosin Famurewa, P.E., S.P.E.C. Amara N. Okafor, P.E. TBPELS License No. 100569 TBPELS License No. 113166 Executive Vice President / Director Senior Vice Presid

KOS / Kosmos Energy Ltd. / Grantham, Mayo, Van Otterloo & Co. LLC Passive Investment

SCHEDULE 13G/A 0001072613-24-000146 0001352662 XXXXXXXX LIVE 1 Common Stock 12/31/2024 0001509991 Kosmos Energy Ltd 500688106 8176 Park Lane Suite 500 Dallas TX 75231 Rule 13d-1(b) Grantham, Mayo, Van Otterloo & Co.

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144 0002025403 XXXXXXXX LIVE 0001509991 Kosmos Energy Ltd. 001-35167 8176 PARK LANE SUITE 500 DALLAS TX 75231 (214) 445-9600 Marion Josh R. Officer Common Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917 10354 32324.15 471895480 02/05/2025 NYSE Common 02/04/2025 Restricted Stock Vesting Issuer N 10354 02/04/2025 Compensation N Josh Marion 8176 Park Lane Dallas TX 75231 Common 0

144

144 0001600834 XXXXXXXX LIVE 0001509991 Kosmos Energy Ltd. 001-35167 8176 PARK LANE SUITE 500 DALLAS TX 75231 (214) 445-9600 INGLIS ANDREW G Officer Director Common Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917 138689 432973.19 471895480 02/05/2025 NYSE Common 02/04/2025 Restricted Stock Vesting Issuer N 138689 02/04/2025 Compensation N Andrew G. Inglis 8176 Park Lane Dallas

EX-99

EX-99 3 ITEM7.txt EXHIBIT 99: ITEM 7 BlackRock Life Limited BlackRock Advisors, LLC Aperio Group, LLC BlackRock Institutional Trust Company, National Association BlackRock Asset Management Ireland Limited BlackRock Financial Management, Inc. BlackRock Asset Management Schweiz AG BlackRock Investment Management, LLC BlackRock Investment Management (UK) Limited BlackRock Asset Management Canada Limi

EX-24

EX-24 2 PowerOfAttorney.txt EXHIBIT 24: POWER OF ATTORNEY POWER OF ATTORNEY The undersigned, BlackRock, Inc., a corporation duly organized under the laws of the State of Delaware, United States (the "Company"), does hereby make, constitute and appoint each of Eric Andruczyk, Richard Cundiff, R. Andrew Dickson, III, Spencer Fleming, Laura Hildner, David Maryles, Christopher Meade, Charles Park, Jam

144

144 0001806050 XXXXXXXX LIVE 0001509991 Kosmos Energy Ltd. 001-35167 8176 PARK LANE SUITE 500 DALLAS TX 75231 (214) 445-9600 Shah Nealesh D. Officer Common Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917 78015 243555.03 471895480 02/05/2025 NYSE Common 02/04/2025 Restricted Stock Vesting Issuer N 78015 02/04/2025 Compensation N Nealesh Shah 8176 Park Lane Dallas TX 75231 Commo

144

144 0001806050 XXXXXXXX LIVE 0001509991 Kosmos Energy Ltd. 001-35167 8176 PARK LANE SUITE 500 DALLAS TX 75231 (214) 445-9600 Shah Nealesh D. Officer Common Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917 78191 243557.15 471895480 02/04/2025 NYSE Common 02/03/2025 Restricted Stock Vesting Issuer N 78191 02/03/2025 Compensation N Nealesh Shah 8176 Park Lane Dallas TX 75231 Commo

144

144 0001600834 XXXXXXXX LIVE 0001509991 Kosmos Energy Ltd. 001-35167 8176 PARK LANE SUITE 500 DALLAS TX 75231 (214) 445-9600 INGLIS ANDREW G Officer Director Common Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917 102701 320457.93 471895480 02/03/2025 NYSE Common 01/31/2025 Restricted Stock Vesting Issuer N 102701 01/31/2025 Compensation Y Sale includes an amount necessary to c

144

144 0001794967 XXXXXXXX LIVE 0001509991 Kosmos Energy Ltd. 001-35167 8176 PARK LANE SUITE 500 DALLAS TX 75231 (214) 445-9600 Glass Ronald W. Officer Common Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917 16182 50492.70 471895480 02/03/2025 NYSE Common 01/31/2025 Restricted Stock Vesting Issuer N 16182 01/31/2025 Compensation Y Sale includes an amount necessary to cover a tax o

144

144 0001806050 XXXXXXXX LIVE 0001509991 Kosmos Energy Ltd. 001-35167 8176 PARK LANE SUITE 500 DALLAS TX 75231 (214) 445-9600 Shah Nealesh D. Officer Common Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917 56987 177816.54 471895480 02/03/2025 NYSE Common 01/31/2025 Restricted Stock Vesting Issuer N 56987 01/31/2025 Compensation Y Sale includes an amount necessary to cover a tax

AGREEMENT

Exhibit 1 AGREEMENT Each of the undersigned, pursuant to Rule 13d-1(k)(l) under the Securities Exchange Act of 1934, as amended, hereby agrees that only one statement containing the information required by Schedule 13G needs be filed with respect to the ownership by each of the undersigned of the common shares of Kosmos Energy Ltd.

KOS / Kosmos Energy Ltd. / VAUGHAN NELSON INVESTMENT MANAGEMENT, L.P. Passive Investment

SCHEDULE 13G/A 0000945621-19-000049 0001021642 XXXXXXXX LIVE 6 Common Shares 12/31/2024 0001509991 Kosmos Energy Ltd.

EX-99

Exhibit 99 Pursuant to the instructions in Item 7 of Schedule 13G, the following table lists the identity and Item 3 classification, if applicable, of each relevant entity that beneficially owns shares of the security class being reported on this Schedule 13G.

Regulation FD Disclosure

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 29, 2024 KOSMOS ENERGY LTD.

KOS / Kosmos Energy Ltd. / AMERICAN CENTURY INVESTMENT MANAGEMENT INC - SC 13G Passive Investment

SC 13G 1 kosmoenergyltd13g.htm SC 13G UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. ) * KOSMOS ENERGY LTD (Name of Issuer) COMMON STOCK (Title of Class of Securities) 500688106 (CUSIP Number) SEPTEMBER 30, 2024 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designat

KOSMOS ENERGY ANNOUNCES THIRD QUARTER 2024 RESULTS

Exhibit 99.1 NEWS RELEASE KOSMOS ENERGY ANNOUNCES THIRD QUARTER 2024 RESULTS DALLAS-(BUSINESS WIRE)—November 4, 2024- Kosmos Energy Ltd. (“Kosmos” or the “Company”) (NYSE/LSE: KOS) announced today its financial and operating results for the third quarter of 2024. For the quarter, the Company generated a net income of $45 million, or $0.09 per diluted share. When adjusted for certain items that imp

Exit Agreement between Kosmos Energy, LLC and Jason E. Doughty dated July 8, 2024

Exhibit 10.1 EXIT AGREEMENT This Exit Agreement (the “Agreement”) is made and entered into effective as of the Effective Date (as defined below), between Kosmos Energy, LLC (“Company”) and Jason E. Doughty (“Retiree” and, together with Company, the “Parties”). In connection with this Agreement, the Parties acknowledge that (a) Company is a premier international oil and gas exploration and producti

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2024 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number:

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 4, 2024 KOSMOS ENERGY LTD.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 4, 2024 KOSMOS ENERGY LTD.

Termination of a Material Definitive Agreement

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 18, 2024 KOSMOS ENERGY LTD.

Regulation FD Disclosure

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 7, 2024 KOSMOS ENERGY LTD.

Entry into a Material Definitive Agreement, Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): September 24, 2024 KOSMOS ENERGY LTD.

Indenture dated September 24, 2024 among the Company, the guarantors named therein, Wilmington Trust, National Association, as trustee, paying agent, transfer agent and registrar, and Circumference Services S.à.r.l., as Luxembourg paying agent, listing agent, registrar and transfer agent

Exhibit 4.1 SENIOR NOTES INDENTURE Dated as of September 24, 2024 Among KOSMOS ENERGY LTD. THE SUBSIDIARY GUARANTORS LISTED ON THE SIGNATURE PAGES HERETO and WILMINGTON TRUST, NATIONAL ASSOCIATION, as Trustee, Paying Agent, Registrar and Transfer Agent and Circumference Services S.À.r.l. as Luxembourg Paying Agent, Listing Agent, Registrar and Transfer Agent 8.750% SENIOR NOTES DUE 2031 TABLE OF C

KOSMOS ENERGY ANNOUNCES PRICING OF $500 MILLION OF SENIOR NOTES DUE 2031

Exhibit 99.1 NEWS RELEASE KOSMOS ENERGY ANNOUNCES PRICING OF $500 MILLION OF SENIOR NOTES DUE 2031 DALLAS-September 10, 2024 – Kosmos Energy Ltd. (“Kosmos”) (NYSE/LSE: KOS) announced today the pricing of $500 million aggregate principal amount of its 8.750% senior notes due 2031. The offering is expected to close on September 24, 2024, subject to customary closing conditions. Kosmos intends to use

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): September 10, 2024 KOSMOS ENERGY LTD.

Regulation FD Disclosure, Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): September 9, 2024 KOSMOS ENERGY LTD.

KOSMOS ENERGY LTD ANNOUNCES CASH TENDER OFFERS FOR UP TO $400 MILLION PRINCIPAL AMOUNT OF 7.125% SENIOR NOTES DUE 2026 AND UP TO $100 MILLION AGGREGATE PRINCIPAL AMOUNT OF 7.750% SENIOR NOTES DUE 2027 AND 7.500% SENIOR NOTES DUE 2028

Exhibit 99.2 KOSMOS ENERGY LTD ANNOUNCES CASH TENDER OFFERS FOR UP TO $400 MILLION PRINCIPAL AMOUNT OF 7.125% SENIOR NOTES DUE 2026 AND UP TO $100 MILLION AGGREGATE PRINCIPAL AMOUNT OF 7.750% SENIOR NOTES DUE 2027 AND 7.500% SENIOR NOTES DUE 2028 September 9, 2024 – Kosmos Energy Ltd. (the "Offeror", “Kosmos”, or the “Company”) (NYSE/LSE:KOS) announces the launch of its offers to purchase for cash

KOSMOS ENERGY ANNOUNCES LAUNCH OF SENIOR NOTES OFFERING

Exhibit 99.1 NEWS RELEASE KOSMOS ENERGY ANNOUNCES LAUNCH OF SENIOR NOTES OFFERING DALLAS-(BUSINESS WIRE)—September 9, 2024- Kosmos Energy Ltd. (“Kosmos” or the “Company”) (NYSE/LSE: KOS) announced today that, subject to market conditions, it intends to offer $500 million aggregate principal amount of senior notes due 2031. Kosmos intends to use the net proceeds from the offering, together with cas

Exhibit 99.1 - Our Report on Payments to Government for the year ended December 31, 2023

Exhibit 2.01 Report on Payments to Government for the Year 2023 Kosmos Energy Ltd. has prepared the following consolidated report in respect of payments made to governments for the year ended 31 December 2023 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) and DTR 4.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM SD SPECIALIZED DISCLOSURE REPORT KOSMOS ENERGY LTD. (Exact Name of Registrant as Specified in its Charter) Delaware 001-35167 98-0686001 (State or other jurisdiction of incorp

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM SD SPECIALIZED DISCLOSURE REPORT KOSMOS ENERGY LTD.

XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT

Senegal Retirement [Member] Senegal Retirement Various Equatorial Guinea [Member] Equatorial Guinea Block S [Member] Equatorial Guinea Block S Green Canyon [Member] Green Canyon Instituto Nacional de Seguridad Social de Guinea Ecuatorial [Member] UNITED KINGDOM SENEGAL Government of Republic of Ghana [Member] Government of Republic of Ghana Chef du Bureau de Recouvrement [Member] Chef du Bureau de

XBRL INSTANCE DOCUMENT

iso4217:USD 0001509991 2023-01-01 2023-12-31 0001509991 kos:MinistryOfMinesAndHydrocarbonsMember country:GQ 2023-01-01 2023-12-31 0001509991 kos:TresoreriaGeneralDelEstadoMember country:GQ 2023-01-01 2023-12-31 0001509991 kos:InstitutoNacionalDeSeguridadSocialDeGuineaEcuatorialMember country:GQ 2023-01-01 2023-12-31 0001509991 kos:FondoDeFormactionDelMinisterioDeMinasEMember country:GQ 2023-01-01

KOS / Kosmos Energy Ltd. / FMR LLC Passive Investment

SCHEDULE 13G Amendment No.8 KOSMOS ENERGY LTD COMMON STOCK Cusip #500688106 Check the appropriate box to designate the rule pursuant to which this Schedule is filed: [x] Rule 13d-1(b) [ ] Rule 13d-1(c) [ ] Rule 13d-1(d) Cusip #500688106 Item 1: Reporting Person - FMR LLC Item 2: (a) [ ] (b) [ ] Item 4: Delaware Item 5: 29,324,595 Item 6: 0 Item 7: 33,714,332 Item 8: 0 Item 9: 33,714,332 Item 11: 7

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 5, 2024 KOSMOS ENERGY LTD. (

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 5, 2024 KOSMOS ENERGY LTD.

mong Kosmos Energy Finance International, Kosmos Energy Operating, Kosmos Energy International, Kosmos Energy Development, Kosmos Energy Ghana HC, Kosmos Energy Equatorial Guinea, Kosmos Energy Ghana Investments, Kosmos Energy Ghana Holdings Limited, Kosmos Energy Equatorial Guinea, Inc., Kosmos Energy International Petroleum, Inc., ABSA Bank Limited, ING Belgium SA/NV, Natixis, N.B.S.A Limited, The Standard Bank of South Africa Limited, Isle of Man Branch, Standard Chartered Bank, ABSA Bank (Mauritius) Limited and Deutsche Bank AG, Amsterdam Branch.

Exhibit 10.1 CONFORMED COPY KOSMOS ENERGY FINANCE INTERNATIONAL as Borrower - and - KOSMOS ENERGY FINANCE INTERNATIONAL, KOSMOS ENERGY OPERATING, KOSMOS ENERGY INTERNATIONAL, KOSMOS ENERGY DEVELOPMENT, KOSMOS ENERGY GHANA HC, KOSMOS ENERGY EQUATORIAL GUINEA, KOSMOS ENERGY GHANA INVESTMENTS, KOSMOS ENERGY GHANA HOLDINGS LIMITED, KOSMOS EQUATORIAL GUINEA, INC. AND KOSMOS INTERNATIONAL PETROLEUM, INC

KOSMOS ENERGY ANNOUNCES SECOND QUARTER 2024 RESULTS

Exhibit 99.1 NEWS RELEASE KOSMOS ENERGY ANNOUNCES SECOND QUARTER 2024 RESULTS DALLAS-(BUSINESS WIRE)—August 5, 2024- Kosmos Energy Ltd. (“Kosmos” or the “Company”) (NYSE/LSE: KOS) announced today its financial and operating results for the second quarter of 2024. For the quarter, the Company generated a net income of $60 million, or $0.12 per diluted share. When adjusted for certain items that imp

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2024 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 001-3

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 8, 2024 (July 5, 2024) KOSMOS ENERGY LTD.

Calculation of Filing Fee Tables

Exhibit 107 Calculation of Filing Fee Tables Form S-3 (Form Type) KOSMOS ENERGY LTD.

As filed with the Securities and Exchange Commission on June 20, 2024

As filed with the Securities and Exchange Commission on June 20, 2024 Registration No.

Power of Attorney

Exhibit 24.1 POWER OF ATTORNEY KNOW ALL PERSONS BY THESE PRESENTS, that each individual whose signature appears below hereby constitutes and appoints each of Andrew G. Inglis, Neal D. Shah, Jason E. Doughty and Josh R. Marion acting singly, his or her true and lawful agent, proxy and attorney-in-fact, with full power of substitution and resubstitution, for him or her and in his or her name, place

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K/A (Amendment No.

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 7, 2024 (June 6, 2024) KOSMOS ENERGY LTD.

Notice of Exempt Solicitation

Notice of Exempt Solicitation NAME OF REGISTRANT: Kosmos Energy NAME OF PERSON RELYING ON EXEMPTION: Oxfam America ADDRESS OF PERSON RELYING ON EXEMPTION: 77 North Washington Street, Suite 5-1, Boston, MA 02114 Written materials are submitted pursuant to Rule 14a-6(g)(1) promulgated under the Securities Exchange Act of 1934.

KOSMOS ENERGY ANNOUNCES FIRST QUARTER 2024 RESULTS

Exhibit 99.1 NEWS RELEASE KOSMOS ENERGY ANNOUNCES FIRST QUARTER 2024 RESULTS DALLAS-(BUSINESS WIRE)—May 7, 2024- Kosmos Energy Ltd. (“Kosmos” or the “Company”) (NYSE/LSE: KOS) announced today its financial and operating results for the first quarter of 2024. For the quarter, the Company generated a net income of $92 million, or $0.19 per diluted share. When adjusted for certain items that impact t

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 7, 2024 KOSMOS ENERGY LTD.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2024 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 001-

Entry into a Material Definitive Agreement, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 29, 2024 KOSMOS ENERGY LTD.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☐ Defin

ARS

2023 ANNUAL REPORTAt KOSMOS ENERGY, our purpose is clear. We are a leading deepwater exploration and production company focused on meeting the world’s growing demand for cleaner energy. With oil production from our low cost, lower carbon oil assets in Ghana, the U.S. Gulf of Mexico, and Equatorial Guinea, we are providing the world with the energy it needs today. At the same time, we are developin

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14

Indenture dated March 8, 2024 among the Company, the guarantors named therein and Wilmington Trust, National Association, as trustee.

Exhibit 4.1 INDENTURE Dated as of March 8, 2024 Among KOSMOS ENERGY LTD. THE SUBSIDIARY GUARANTORS LISTED ON THE SIGNATURE PAGES HERETO AND WILMINGTON TRUST, NATIONAL ASSOCIATION, as Trustee 3.125% Convertible Senior Notes due 2030 TABLE OF CONTENTS Page Article 1 Definitions Section 1.01 . Definitions 1 Section 1.02 . References to Interest 18 Article 2 Issue, Description, Execution, Registration

Form of Additional Capped Call Transaction Confirmation.

Exhibit 10.2 [Dealer Name and Address] March 6, 2024 To: Kosmos Energy Ltd. 8176 Park Lane, Suite 500 Dallas, Texas 75231 Attention: General Counsel Re: Additional Call Option Transaction The purpose of this letter agreement (this “Confirmation”) is to confirm the terms and conditions of the call option transaction entered into between [Dealer Name] (“Dealer”) and Kosmos Energy Ltd. (“Counterparty

Entry into a Material Definitive Agreement, Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 8, 2024 KOSMOS ENERGY LTD.

Form of 3.125% Convertible Senior Notes due 2030

Exhibit 4.2 FORM OF NOTE [FORM OF FACE OF NOTE] [INCLUDE FOLLOWING LEGEND IF A GLOBAL NOTE] [UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY, A NEW YORK CORPORATION (“DTC”), TO KOSMOS ENERGY LTD. OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE, OR PAYMENT, AND ANY CERTIFICATE ISSUED IS REGISTERED IN THE NAME OF CEDE & CO. OR IN SUCH OTHER NA

Form of Base Capped Call Transaction Confirmation.

Exhibit 10.1 [Dealer Name and Address] March 5, 2024 To: Kosmos Energy Ltd. 8176 Park Lane, Suite 500 Dallas, Texas 75231 Attention: General Counsel Re: Base Call Option Transaction The purpose of this letter agreement (this “Confirmation”) is to confirm the terms and conditions of the call option transaction entered into between [Dealer Name] (“Dealer”) and Kosmos Energy Ltd. (“Counterparty”) as

KOS / Kosmos Energy Ltd. / BlackRock Inc. Passive Investment

SC 13G/A 1 us5006881065030624.txt us5006881065030624.txt SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No: 7) KOSMOS ENERGY LTD - (Name of Issuer) Common Stock - (Title of Class of Securities) 500688106 - (CUSIP Number) February 29, 2024 - (Date of Event Which Requires Filing of this Statement) Check the appropriate box

Kosmos Energy Ltd. Announces Offering Of $300 Million Of Convertible Senior Notes Due 2030

Exhibit 99.1 Kosmos Energy Ltd. Announces Offering Of $300 Million Of Convertible Senior Notes Due 2030 March 4, 2024 Dallas—(Business Wire)— March 4, 2024 – Kosmos Energy Ltd. (NYSE/LSE: KOS) (“Kosmos” or the "Company") announced today that it intends to offer, subject to market and other conditions, $300 million aggregate principal amount of its convertible senior notes due 2030 (the "notes") in

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 4, 2024 KOSMOS ENERGY LTD.

Kosmos Energy Ltd. Financial Restatement Compensation Recoupment Policy (effective October 2, 2023)

Exhibit 97.1 KOSMOS ENERGY LTD. FINANCIAL RESTATEMENT COMPENSATION RECOUPMENT POLICY This Kosmos Energy Ltd. Financial Restatement Compensation Recoupment Policy (this “Policy”) has been adopted by the Compensation Committee (the “Committee”) of the Board of Directors (the “Board”) of Kosmos Energy Ltd. (the “Company”) on November 16, 2023. This Policy provides for the recoupment of certain execut

Amendment No. 5, dated May 5, 2022, to the Production Sharing Contract relating to Block G Offshore Republic of Equatorial Guinea between

Exhibit 10.22 FIFTH AMENDMENT TO THE PRODUCTION SHARING CONTRACT FOR BLOCK G, OFFSHORE REPUBLIC OF EQUATORIAL GUINEA This Fifth Amendment to the Production Sharing Contract for Block G, offshore Republic of Equatorial Guinea (this "Amendment") is entered into in Malabo, Republic of Equatorial Guinea on the 5th day of May, 2022 (the "Fifth Amendment Date"), between Trident Equatorial Guinea, Inc.,

Report of Ryder Scott Company, L.P.

Exhibit 99.1 KOSMOS ENERGY LIMITED Estimated Future Reserves and Income Attributable to Certain Interests and Derived Through Certain Production Sharing Contracts SEC Parameters As of December 31, 2023 /s/ Tosin Famurewa /s/ Amara N. Okafor Tosin Famurewa, P.E., S.P.E.C. Amara N. Okafor, P.E. TBPELS License No. 100569 TBPELS License No. 113166 Executive Vice President / Director Senior Vice Presid

List of Subsidiaries.

Exhibit 21.1 List of Subsidiaries Subsidiary Jurisdiction of Incorporation Kosmos Energy Ltd. Delaware Kosmos Energy Delaware Holdings, LLC Delaware Kosmos Energy Holdings Cayman Islands Kosmos Energy LLC Texas Kosmos Energy Operating Cayman Islands Kosmos Energy Ventures Cayman Islands Kosmos Energy Finance International Cayman Islands Kosmos Energy International Cayman Islands Kosmos Energy Deve

, to the Production Sharing Contract relating to Block G Offshore Republic of Equatorial Guinea between

Exhibit 10.21 FOURTH AMENDMENT TO THE PRODUCTION SHARING CONTRACT FOR BLOCK G, OFFSHORE REPUBLIC OF EQUATORIAL GUINEA This Fourth Amendment to the Production Sharing Contract for Block G, offshore Republic of Equatorial Guinea (this "Amendment") is entered into in Malabo, Republic of Equatorial Guinea on the 1st day of February, 2019 (the "Fourth Amendment Date"), between Kosmos-Trident Equatorial

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2023 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 001-35167

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 26, 2024 KOSMOS ENERGY LTD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 26, 2024 KOSMOS ENERGY LTD.

KOSMOS ENERGY ANNOUNCES FOURTH QUARTER AND FULL YEAR 2023 RESULTS

Exhibit 99.1 NEWS RELEASE KOSMOS ENERGY ANNOUNCES FOURTH QUARTER AND FULL YEAR 2023 RESULTS DALLAS-(BUSINESS WIRE)—February 26, 2024- Kosmos Energy Ltd. (“Kosmos” or the “Company”) (NYSE/LSE: KOS) announced today its financial and operating results for the fourth quarter of 2023. For the quarter, the Company generated a net income of $22 million, or $0.04 per diluted share. When adjusted for certa

KOS / Kosmos Energy Ltd. / Grantham, Mayo, Van Otterloo & Co. LLC - GRANTHAM, MAYO, VAN OTTERLOO & CO. LLC / KOSMOS ENERGY LTD -- SCHEDULE 13G Passive Investment

SC 13G 1 gmo-sch13g18792.htm GRANTHAM, MAYO, VAN OTTERLOO & CO. LLC / KOSMOS ENERGY LTD - SCHEDULE 13G UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. ) * Kosmos Energy Ltd. (Name of Issuer) Common Stock (Title of Class of Securities) 500688106 (CUSIP Number) December 31, 2023 (Date of Event Which Require

KOS / Kosmos Energy Ltd. / FMR LLC Passive Investment

SC 13G/A 1 filing.txt SCHEDULE 13G Amendment No.7 KOSMOS ENERGY LTD COMMON STOCK Cusip #500688106 Check the appropriate box to designate the rule pursuant to which this Schedule is filed: [x] Rule 13d-1(b) [ ] Rule 13d-1(c) [ ] Rule 13d-1(d) Cusip #500688106 Item 1: Reporting Person - FMR LLC Item 2: (a) [ ] (b) [ ] Item 4: Delaware Item 5: 53,939,609 Item 6: 0 Item 7: 59,523,632 Item 8: 0 Item 9:

144

144 0001806050 XXXXXXXX LIVE 0001509991 Kosmos Energy Ltd. 001-35167 8176 PARK LANE SUITE 500 DALLAS TX 75231 (214) 445-9600 Shah Nealesh D. Officer Common Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917 90454 511797.78 460129711 02/06/2024 NYSE Common 02/05/2024 Restricted Stock Vesting Issuer N 90454 02/05/2024 Compensation N Nealesh Shah 8176 Park Lane Dallas TX 75231 Commo

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144 0001600834 XXXXXXXX LIVE 0001509991 Kosmos Energy Ltd. 001-35167 8176 PARK LANE SUITE 500 DALLAS TX 75231 (214) 445-9600 INGLIS ANDREW G Officer Director Common Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917 177430 1003916.69 460129711 02/06/2024 NYSE Common 02/05/2024 Restricted Stock Vesting Issuer N 177430 02/05/2024 Compensation N Andrew Inglis 8176 Park Lane Dallas T

144

144 0001585399 XXXXXXXX LIVE 0001509991 Kosmos Energy Ltd. 001-35167 8176 PARK LANE SUITE 500 DALLAS TX 75231 (214) 445-9600 Ball Christopher James Officer Common Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917 121915 689807.26 460129711 02/06/2024 NYSE Common 02/05/2024 Restricted Stock Vesting Issuer N 121915 02/05/2024 Compensation N Christopher Ball 8176 Park Lane Dallas T

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144 0001600834 XXXXXXXX LIVE 0001509991 Kosmos Energy Ltd. 001-35167 8176 PARK LANE SUITE 500 DALLAS TX 75231 (214) 445-9600 INGLIS ANDREW G Officer Director Common Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917 182948 1003927.16 460129711 02/05/2024 NYSE Common 02/02/2024 Restricted Stock Vesting Issuer N 182948 02/02/2024 Compensation N Andrew Inglis 8176 Park Lane Dallas T

144

144 0001794967 XXXXXXXX LIVE 0001509991 Kosmos Energy Ltd. 001-35167 8176 PARK LANE SUITE 500 DALLAS TX 75231 (214) 445-9600 Glass Ronald W. Officer Common Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917 18115 105769.87 460129711 02/02/2024 NYSE Common 02/01/2024 Restricted Stock Vesting Issuer N 18115 02/01/2024 Compensation N Ronald Glass 8176 Park Lane Dallas TX 75231 Commo

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144 0001561919 XXXXXXXX LIVE 0001509991 Kosmos Energy Ltd. 001-35167 8176 PARK LANE SUITE 500 DALLAS TX 75231 (214) 445-9600 Doughty Jason Officer Common Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917 69025 403023.17 460129711 02/02/2024 NYSE Common 02/01/2024 Restricted Stock Vesting Issuer N 69025 02/01/2024 Compensation N Jason Doughty 8176 Park Lane Dallas TX 75231 Common

144

144 0001806050 XXXXXXXX LIVE 0001509991 Kosmos Energy Ltd. 001-35167 8176 PARK LANE SUITE 500 DALLAS TX 75231 (214) 445-9600 Shah Nealesh D. Officer Common Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917 84672 510462.09 460129711 02/01/2024 NYSE Common 01/31/2024 Restricted Stock Vesting Issuer N 84672 01/31/2024 Compensation Y 02/01/2024 /S/ Adam Gehring, as a duly authorized

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144 0001585399 XXXXXXXX LIVE 0001509991 Kosmos Energy Ltd. 001-35167 8176 PARK LANE SUITE 500 DALLAS TX 75231 (214) 445-9600 Ball Christopher James Officer Common Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917 114423 689821.94 460129711 02/01/2024 NYSE Common 01/31/2024 Restricted Stock Vesting Issuer N 114423 01/31/2024 Compensation Y 02/01/2024 /s/ Jennifer Ruchti, as a dul

144

144 0001561919 XXXXXXXX LIVE 0001509991 Kosmos Energy Ltd. 001-35167 8176 PARK LANE SUITE 500 DALLAS TX 75231 (214) 445-9600 Doughty Jason Officer Common Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917 66616 401607.88 460129711 02/01/2024 NYSE Common 01/31/2024 Performance Shares Issuer N 66616 01/31/2024 Compensation Y 02/01/2024 /s/Wade Moss, as a duly authorized representat

KOS / Kosmos Energy Ltd. / VAUGHAN NELSON INVESTMENT MANAGEMENT, L.P. - AMENDMENT NO. 5 TO SCHEDULE 13G Passive Investment

SC 13G/A 1 kos13g4q2022.htm AMENDMENT NO. 5 TO SCHEDULE 13G UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G (Rule 13d-102) Under the Securities Exchange Act of 1934 (Amendment No. 5) Kosmos Energy Ltd. (Name of Issuer) Common Shares (Title of Class of Securities) 500688106 (CUSIP Number) December 31, 2023 (Date of Event which Requires Filing of this Statement)

KOS / Kosmos Energy Ltd. / BlackRock Inc. Passive Investment

SC 13G/A 1 us5006881065012424.txt us5006881065012424.txt SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No: 6) KOSMOS ENERGY LTD - (Name of Issuer) Common Stock - (Title of Class of Securities) 500688106 - (CUSIP Number) December 31, 2023 - (Date of Event Which Requires Filing of this Statement) Check the appropriate box

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144 0001754167 XXXXXXXX LIVE 0001509991 Kosmos Energy Ltd. 001-35167 8176 PARK LANE SUITE 500 DALLAS TX 75231 (214) 445-9600 Clark Richard Ryan Officer Common Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917 83239 517513.51 460129711 01/24/2024 NYSE Common 01/23/2024 Performance Shares Issuer N 83239 01/23/2024 Compensation Y 01/24/2024 /s/ Emily Navaro, as a duly authorized re

KOS / Kosmos Energy Ltd. / STATE STREET CORP Passive Investment

SC 13G/A 1 KosmosEnergyLtd.txt UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13G UNDER THE SECURITIES EXCHANGE ACT OF 1934 EXIT FILING KOSMOS ENERGY LTD (NAME OF ISSUER) COMMON STOCK (TITLE OF CLASS OF SECURITIES) 500688106 (CUSIP NUMBER) 12/31/2023 (DATE OF EVENT WHICH REQUIRES FILING OF THIS STATEMENT) CHECK THE APPROPRIATE BOX TO DESIGNATE THE RULE PURSUANT TO

KOSMOS ENERGY ANNOUNCES THIRD QUARTER 2023 RESULTS

Exhibit 99.1 NEWS RELEASE KOSMOS ENERGY ANNOUNCES THIRD QUARTER 2023 RESULTS DALLAS-(BUSINESS WIRE)—November 6, 2023- Kosmos Energy Ltd. (“Kosmos” or the “Company”) (NYSE/LSE: KOS) announced today its financial and operating results for the third quarter of 2023. For the quarter, the Company generated a net income of $85 million, or $0.18 per diluted share. When adjusted for certain items that imp

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 6, 2023 KOSMOS ENERGY LTD.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2023 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number:

, 2023, among Kosmos Energy Finance International, Kosmos Energy Operating, Kosmos Energy International, Kosmos Energy Development, Kosmos Energy Ghana HC, Kosmos Energy Equatorial Guinea, Kosmos Energy Ghana Investments, Kosmos Energy Ghana Holdings Limited, Kosmos Equatorial Guinea, Inc., Kosmos International

Exhibit 10.1 CONFORMED COPY KOSMOS ENERGY FINANCE INTERNATIONAL as Borrower - and - KOSMOS ENERGY FINANCE INTERNATIONAL, KOSMOS ENERGY OPERATING, KOSMOS ENERGY INTERNATIONAL, KOSMOS ENERGY DEVELOPMENT, KOSMOS ENERGY GHANA HC, KOSMOS ENERGY EQUATORIAL GUINEA, KOSMOS ENERGY GHANA INVESTMENTS, KOSMOS ENERGY GHANA HOLDINGS LIMITED, KOSMOS EQUATORIAL GUINEA, INC. AND KOSMOS INTERNATIONAL PETROLEUM, INC

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): September 18, 2023 (September 15, 2

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): September 18, 2023 (September 15, 2023) KOSMOS ENERGY LTD.

KOS / Kosmos Energy Ltd / BlackRock Inc. Passive Investment

us5006881065090623.txt SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No: 5) KOSMOS ENERGY LTD - (Name of Issuer) Common Stock - (Title of Class of Securities) 500688106 - (CUSIP Number) August 31, 2023 - (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to wh

KOSMOS ENERGY ANNOUNCES SECOND QUARTER 2023 RESULTS

Exhibit 99.1 NEWS RELEASE KOSMOS ENERGY ANNOUNCES SECOND QUARTER 2023 RESULTS DALLAS-(BUSINESS WIRE)—August 7, 2023- Kosmos Energy Ltd. (“Kosmos” or the “Company”) (NYSE/LSE: KOS) announced today its financial and operating results for the second quarter of 2023. For the quarter, the Company generated a net income of $23 million, or $0.05 per diluted share. When adjusted for certain items that imp

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 7, 2023 KOSMOS ENERGY LTD. (

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 7, 2023 KOSMOS ENERGY LTD.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2023 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 001-3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 12, 2023 KOSMOS ENERGY LTD. (E

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 12, 2023 KOSMOS ENERGY LTD.

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144 0001730316 XXXXXXXX LIVE 0001509991 Kosmos Energy Ltd. 001-35167 8176 PARK LANE SUITE 500 DALLAS TX 75231 (214) 445-9600 GOODWIN DEANNA L Director Common Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917 112000 748587.35 459967597 06/09/2023 NYSE Common 06/04/2019 Restricted Stock Vesting Issuer N 17903 06/04/2019 Compensation Common 06/05/2020 Restricted Stock Vesting Issue

As filed with the Securities and Exchange Commission on June 9, 2023

As filed with the Securities and Exchange Commission on June 9, 2023 Registration No.

Filing Fee Table

EX-FILING FEES 6 dp195014ex107.htm EXHIBIT 107 Exhibit 107 Calculation of Filing Fee Tables Form S-8 (Form Type) Kosmos Energy Ltd. (Exact Name of Registrant as Specified in its Charter) Newly Registered Securities Security Type Security Class Title Fee Calculation Rule Amount Registered(1) Proposed Maximum Offering Price Per Unit(2)(3) Maximum Aggregate Offering Price Fee Rate Amount of Registrat

Long Term Incentive Plan (amended and restated as of April 25, 2023) (filed as Exhibit 99 to the Company’s Registration Statement on Form S-8 filed June 9, 2023 (File No. 333-272562), and incorporated herein by reference).

Exhibit 99 KOSMOS ENERGY LTD. LONG TERM INCENTIVE PLAN (amended and restated as of April 25, 2023) TABLE OF CONTENTS Page Section 1. Purpose 1 Section 2. Definitions 1 Section 3. Eligibility 6 Section 4. Administration 6 Section 5. Shares Available for Awards 7 Section 6. Options 8 Section 7. Stock Appreciation Rights 9 Section 8. Restricted Stock and RSUs 9 Section 9. Performance Awards 10 Sectio

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 9, 2023 (June 8, 2023) KOSMOS

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 9, 2023 (June 8, 2023) KOSMOS ENERGY LTD.

KOSMOS ENERGY ANNOUNCES FIRST QUARTER 2023 RESULTS

Exhibit 99.1 NEWS RELEASE KOSMOS ENERGY ANNOUNCES FIRST QUARTER 2023 RESULTS DALLAS-(BUSINESS WIRE)—May 9, 2023- Kosmos Energy Ltd. (“Kosmos” or the “Company”) (NYSE/LSE: KOS) announced today its financial and operating results for the first quarter of 2023. For the quarter, the Company generated a net income of $83 million, or $0.17 per diluted share. When adjusted for certain items that impact t

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 9, 2023 KOSMOS ENERGY LTD.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2023 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 001-

Production Sharing Contract relating to Block EG-01 Offshore Republic of Equatorial Guinea between the Republic of Equatorial Guinea, Guinea Ecuatorial de Petroleos, Panoro EG Exploration Limited and Kosmos Energy Equatorial Guinea dated February 17, 2023

Exhibit 10.1 PRODUCTION SHARING CONTRACT BETWEEN THE REPUBLIC OF EQUATORIAL GUINEA AND GUINEA ECUATORIAL DE PETROLEOS AND PANORO EG EXPLORATION LIMITED AND KOSMOS ENERGY EQUATORIAL GUINEA FOR EG-01 CONTENTS Page ARTICLE 1 SCOPE AND DEFINITIONS 4 ARTICLE 2 PERIOD OF EXPLORATION AND RELINQUISHMENTS OF AREAS 11 ARTICLE 3 EXPLORATION WORK OBLIGATIONS 13 ARTICLE 4 ANNUAL WORK PROGRAMS AND BUDGETS 16 AR

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☐ Defin

ARS

2022 ANNUAL REPORTKOSMOS ENERGY is a full-cycle deepwater exploration and production company focused on meeting the world’s growing demand for secure, affordable and cleaner energy.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 26, 2023 (April 25, 2023) KOS

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 26, 2023 (April 25, 2023) KOSMOS ENERGY LTD.

KOSMOS ENERGY ANNOUNCES NEW APPOINTMENTS TO BOARD OF DIRECTORS New members bring deep international operations and LNG expertise to Kosmos Energy’s Board of Directors

NEWS RELEASE KOSMOS ENERGY ANNOUNCES NEW APPOINTMENTS TO BOARD OF DIRECTORS New members bring deep international operations and LNG expertise to Kosmos Energy’s Board of Directors DALLAS-(BUSINESS WIRE)—April 26, 2023- Kosmos Energy Ltd.

Amended and Restated Facility Agreement, amended as of November 23, 2022, among Kosmos Energy Finance International, Kosmos Energy Operating, Kosmos Energy International, Kosmos Energy Development, Kosmos Energy Ghana HC, Kosmos Energy Equatorial Guinea, Kosmos Equatorial Guinea, Inc., Kosmos International Petroleum, Inc., ABSA Bank Limited, Credit Agricole Corporate and Investment Bank, ING Belgium SA/NV, Natixis, N.B.S.A Limited, Societe Generale, London Branch, The Standard Bank of South Africa Limited, Isle of Man Branch, Standard Chartered Bank, and SMBC Bank International PLC

Exhibit 10.37 KOSMOS ENERGY FINANCE INTERNATIONAL as Borrower - and - KOSMOS ENERGY FINANCE INTERNATIONAL, KOSMOS ENERGY OPERATING, KOSMOS ENERGY INTERNATIONAL, KOSMOS ENERGY DEVELOPMENT, KOSMOS ENERGY GHANA HC, KOSMOS ENERGY EQUATORIAL GUINEA, KOSMOS EQUATORIAL GUINEA, INC. AND KOSMOS INTERNATIONAL PETROLEUM, INC. as Guarantors - and - ABSA BANK LIMITED (ACTING THROUGH ITS CORPORATE AND INVESTMEN

List of Subsidiaries.

Exhibit 21.1 List of Subsidiaries Subsidiary Jurisdiction of Incorporation Kosmos Energy Ltd. Delaware Kosmos Energy Delaware Holdings, LLC Delaware Kosmos Energy Holdings Cayman Islands Kosmos Energy LLC Texas Kosmos Energy Operating Cayman Islands Kosmos Energy Ventures Cayman Islands Kosmos Energy Finance International Cayman Islands Kosmos Energy International Cayman Islands Kosmos Energy Deve

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2022 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 001-35167

Revolving Credit Facility Agreement, amended as of November 23, 2022, among Kosmos Energy Ltd., as Original Borrower, certain of its subsidiaries listed therein, as Guarantors, The Standard Bank of South Africa Limited, as Facility Agent, Crédit Agricole Corporate and Investment Bank, as Security and Intercreditor Agent, and the financial institutions listed therein, as Lenders

Exhibit 10.38 KOSMOS ENERGY LTD as Original Borrower - and - THE ENTITIES LISTED IN SCHEDULE 1 as Guarantors - and - SOCIETE GENERALE, LONDON BRANCH, THE STANDARD BANK OF SOUTH AFRICA LIMITED, N.B.S.A. LIMITED, STANDARD CHARTERED BANK, NATIXIS, BARCLAYS BANK PLC, BANK OF AMERICA, N.A., LONDON BRANCH, ECOBANK GHANA PLC, GLENCORE ENERGY UK LTD. as Mandated Lead Arrangers - and - THE STANDARD BANK OF

Exploration and Production Contract between The Islamic Republic of Mauritania and BP Mauritania Investments Limited, Kosmos Energy Mauritania, and Societe Mauritanienne Des Hydrocarbures (BirAllah) dated November 7, 2022

Exhibit 10.16 ISLAMIC REPUBLIC OF MAURITANIA HONOUR – BROTHERHOOD – JUSTICE EXPLORATION AND PRODUCTION CONTRACT BETWEEN THE ISLAMIC REPUBLIC OF MAURITANIA AND BP MAURITANIA INVESTMENTS LIMITED KOSMOS ENERGY MAURITANIA SOCIETE MAURITANIENNE DES HYDROCARBURES BirAllah INDEX ARTICLE 1: DEFINITIONS ARTICLE 2: SCOPE OF APPLICATION OF THE CONTRACT ARTICLE 3: EXPLORATION AUTHORIZATION ARTICLE 4: EXPLORAT

Report of Ryder Scott Company, L.P.

Exhibit 99.1 KOSMOS ENERGY LIMITED Estimated Future Reserves and Income Attributable to Certain Interests and Derived Through Certain Production Sharing Contracts SEC Parameters As of December 31, 2022 \s\ Tosin Famurewa \s\ Amara N. Okafor Tosin Famurewa, P.E., S.P.E.C. Amara N. Okafor, P.E. TBPELS License No. 100569 TBPELS License No. 113166 Managing Senior Vice President / Director Senior Vice

KOSMOS ENERGY ANNOUNCES FOURTH QUARTER AND FULL YEAR 2022 RESULTS

Exhibit 99.1 NEWS RELEASE KOSMOS ENERGY ANNOUNCES FOURTH QUARTER AND FULL YEAR 2022 RESULTS DALLAS-(BUSINESS WIRE)—February 27, 2023- Kosmos Energy Ltd. (“Kosmos” or the “Company”) (NYSE/LSE: KOS) announced today its financial and operating results for the fourth quarter of 2022. For the quarter, the Company generated a net loss of $114 million, or $0.24 per diluted share. When adjusted for certai

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 27, 2023 KOSMOS ENERGY LTD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 27, 2023 KOSMOS ENERGY LTD.

KOS / Kosmos Energy Ltd / HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC - KOSMOS ENERGY LTD. AMENDMENT 1 Passive Investment

SC 13G/A 1 KOS13g01.txt KOSMOS ENERGY LTD. AMENDMENT 1 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No.1) KOSMOS ENERGY LTD. (Name of Issuer) Common Stock (Title of Class of Securities) 500688106 (CUSIP Number) Hotchkis & Wiley Capital Management, LLC 601 S. Figueroa Street, 39th Fl. Los Angeles, CA 90017

KOS / Kosmos Energy Ltd / Grantham, Mayo, Van Otterloo & Co. LLC - GRANTHAM, MAYO, VAN OTTERLOO & CO. LLC / KOSMOS ENERGY LTD -- SCHEDULE 13G Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. ) Kosmos Energy Ltd (Name of Issuer) Common Stock (Title of Class of Securities) 500688106 (CUSIP Number) December 31st, 2022 (Date of Event Which Requires Filing of This Statement) Check the appropriate box to designate the rule pursuant to which this Sched

KOS / Kosmos Energy Ltd / FMR LLC Passive Investment

SC 13G/A 1 filing.txt SCHEDULE 13G Amendment No.6 KOSMOS ENERGY LTD COMMON STOCK Cusip #500688106 Check the appropriate box to designate the rule pursuant to which this Schedule is filed: [x] Rule 13d-1(b) [ ] Rule 13d-1(c) [ ] Rule 13d-1(d) Cusip #500688106 Item 1: Reporting Person - FMR LLC Item 2: (a) [ ] (b) [ ] Item 4: Delaware Item 5: 64,659,372 Item 6: 0 Item 7: 68,381,177 Item 8: 0 Item 9:

KOS / Kosmos Energy Ltd / BlackRock Inc. Passive Investment

us5006881065020323.txt SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No: 4) KOSMOS ENERGY LTD - (Name of Issuer) Common Stock - (Title of Class of Securities) 500688106 - (CUSIP Number) December 31, 2022 - (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to

KOS / Kosmos Energy Ltd / VAUGHAN NELSON INVESTMENT MANAGEMENT, L.P. - AMENDMENT NO. 4 TO SCHEDULE 13G Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G (Rule 13d-102) Under the Securities Exchange Act of 1934 (Amendment No. 4) Kosmos Energy Ltd. (Name of Issuer) Common Shares (Title of Class of Securities) 500688106 (CUSIP Number) December 31, 2022 (Date of Event which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to

KOS / Kosmos Energy Ltd / STATE STREET CORP Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13G UNDER THE SECURITIES EXCHANGE ACT OF 1934 INITIAL FILING KOSMOS ENERGY LTD (NAME OF ISSUER) COMMON STOCK (TITLE OF CLASS OF SECURITIES) 500688106 (CUSIP NUMBER) 12/31/2022 (DATE OF EVENT WHICH REQUIRES FILING OF THIS STATEMENT) CHECK THE APPROPRIATE BOX TO DESIGNATE THE RULE PURSUANT TO WHICH THIS SCHEDULE IS FILE

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 7, 2022 KOSMOS ENERGY LTD.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 7, 2022 KOSMOS ENERGY LTD.

KOSMOS ENERGY ANNOUNCES THIRD QUARTER 2022 RESULTS

Exhibit 99.1 NEWS RELEASE KOSMOS ENERGY ANNOUNCES THIRD QUARTER 2022 RESULTS DALLAS-(BUSINESS WIRE)—November 7, 2022- Kosmos Energy Ltd. (“Kosmos” or the “Company”) (NYSE/LSE: KOS) announced today its financial and operating results for the third quarter of 2022. For the quarter, the Company generated a net income of $222 million, or $0.47 per diluted share. When adjusted for certain items that im

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2022 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number:

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2022 ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 001-3

KOSMOS ENERGY ANNOUNCES SECOND QUARTER 2022 RESULTS

Exhibit 99.1 NEWS RELEASE KOSMOS ENERGY ANNOUNCES SECOND QUARTER 2022 RESULTS DALLAS-(BUSINESS WIRE)?August 8, 2022- Kosmos Energy Ltd. (?Kosmos? or the ?Company?) (NYSE/LSE: KOS) announced today its financial and operating results for the second quarter of 2022. For the quarter, the Company generated a net income of $117 million, or $0.25 per diluted share. When adjusted for certain items that im

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 8, 2022 KOSMOS ENERGY LTD.

LETTER

United States securities and exchange commission logo June 14, 2022 Neal D. Shah Senior Vice President and Chief Financial Officer Kosmos Energy Ltd. 8176 Park Lane, Suite 500 Dallas, Texas 75231 Re: Kosmos Energy Ltd. Form 10-K for the Fiscal Year ended December 31, 2021 Filed February 28, 2022 File No. 001-35167 Dear Mr. Shah: We have completed our review of your filing. We remind you that the c

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 10, 2022 (June 9, 2022) KOSMOS ENERGY LTD.

Kosmos Energy Ltd. c/o Kosmos Energy, LLC 8176 Park Lane, Suite 500 Dallas, Texas 75231 Phone 214-445-9600 Fax 214 363 9024

CORRESP 1 filename1.htm May 31, 2022 Re: Kosmos Energy Ltd. (the “Company”) Form 10-K for Fiscal Year Ended December 31, 2021 (“the “Form 10-K”) Filed February 28, 2022 File No. 001-35167 Ms. Sandra Wall and Mr. John Hodgin Division of Corporate Finance Securities and Exchange Commission 100 F Street N.E. Washington, DC 20549-4628 Dear Ms. Wall and Mr. Hodgin: This letter is in response to your le

LETTER

United States securities and exchange commission logo May 20, 2022 Neal D. Shah Senior Vice President and Chief Financial Officer Kosmos Energy Ltd. 8176 Park Lane, Suite 500 Dallas, Texas 75231 Re: Kosmos Energy Ltd. Form 10-K for the Fiscal Year ended December 31, 2021 Filed February 28, 2022 File No. 001-35167 Dear Mr. Shah: We have reviewed your May 10, 2022 response to our comment letter and

Kosmos Energy Ltd. c/o Kosmos Energy, LLC 8176 Park Lane, Suite 500 Dallas, Texas 75231 Phone 214-445-9600 Fax 214 363 9024

CORRESP 1 filename1.htm May 10, 2022 Re: Kosmos Energy Ltd. (the “Company”) Form 10-K for Fiscal Year Ended December 31, 2021 (“the “Form 10-K”) Filed February 28, 2022 File No. 001-35167 Ms. Sandra Wall Mr. John Hodgin and Mr. Karl Hiller Division of Corporate Finance Securities and Exchange Commission 100 F Street N.E. Washington, DC 20549-4628 Dear Ms. Wall, Mr. Hodgin and Mr. Hiller: This lett

KOSMOS ENERGY ANNOUNCES FIRST QUARTER 2022 RESULTS

Exhibit 99.1 NEWS RELEASE KOSMOS ENERGY ANNOUNCES FIRST QUARTER 2022 RESULTS DALLAS-(BUSINESS WIRE)?May 9, 2022- Kosmos Energy Ltd. (?Kosmos? or the ?Company?) (NYSE/LSE: KOS) announced today its financial and operating results for the first quarter of 2022. For the quarter, the Company generated a net income of $1 million, or $0.00 per diluted share. When adjusted for certain items that impact th

Revolving Credit Facility Agreement, dated March 31, 2022, among Kosmos Energy Ltd., as Original Borrower, certain of its subsidiaries listed therein, as Guarantors, ING Bank N.V., as Facility Agent, Crédit Agricole Corporate and Investment Bank, as Security and Intercreditor

Exhibit 10.1 EXECUTION VERSION KOSMOS ENERGY LTD. as Original Borrower - and - THE ENTITIES LISTED IN SCHEDULE 1 as Guarantors - and - SOCIETE GENERALE, LONDON BRANCH, THE STANDARD BANK OF SOUTH AFRICA LIMITED, N.B.S.A. LIMITED, STANDARD CHARTERED BANK, NATIXIS, BARCLAYS BANK PLC, BANK OF AMERICA, N.A., LONDON BRANCH, ECOBANK GHANA PLC, GLENCORE ENERGY UK LTD. as Mandated Lead Arrangers - and - IN

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 9, 2022 KOSMOS ENERGY LTD.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2022 ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 001-

LETTER

United States securities and exchange commission logo April 28, 2022 Neal D. Shah Senior Vice President and Chief Financial Officer Kosmos Energy Ltd. 8176 Park Lane, Suite 500 Dallas, Texas 75231 Re: Kosmos Energy Ltd. Form 10-K for the Fiscal Year ended December 31, 2021 Filed February 28, 2022 File No. 001-35167 Dear Mr. Shah: We have reviewed your filing and have the following comments. In som

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ? Filed by a Party other than the Registrant ? Check the appropriate box: ? Preliminary Proxy Statement ? Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ? Defin

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

DEF 14A 1 ny20002262x1def14a.htm DEF 14A TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the

Entry into a Material Definitive Agreement, Termination of a Material Definitive Agreement, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 1, 2022 (March 31, 2022) KOSMOS ENERGY LTD.

Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 15, 2022 (March 10, 2022) KOSMOS ENERGY LTD.

Amended and Restated Bylaws of Kosmos Energy Ltd.

Exhibit 3.1 AMENDED AND RESTATED BYLAWS Of KOSMOS ENERGY LTD. Effective: March 10, 2022 i AMENDED AND RESTATED BYLAWS (the ?Bylaws?) OF KOSMOS ENERGY LTD. * * * * * Article 1 Offices Section 1.01. Registered Office 2 Section 1.02. Other Offices 2 Section 1.03. Books 2 Article 2 Meetings of Stockholders Section 2.01. Time and Place of Meetings 2 Section 2.02. Annual Meetings 2 Section 2.03. Special

Kosmos Energy Ltd. Change in Control Severance Policy for U.S. Employees (amended and restated as of January 19, 2022) (filed as Exhibit 10.81 to the Company's Annual Report on Form 10-K for the year ended December 31, 2021, and incorporated herein by reference).

Exhibit 10.81 Amended & Restated Severance Policy Effective as of January 19, 2022 It is the policy of Kosmos Energy Ltd. and its subsidiaries (the ?Company? or ?Kosmos?) to offer eligible U.S. employees severance benefits when a termination is initiated by the Company through no fault of the employee in connection with a change in control. As defined below, Kosmos will offer severance pay, a pror

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ? ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2021 ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 001-35167

Supplemental Indenture dated February 25, 2022 among Kosmos Energy Ltd., the guarantors named therein and, Wilmington Trust, National Association, as trustee, paying agent, transfer agent and registrar (filed as Exhibit 10.56 to the Company's Annual Report on Form 10-K for the year ended December 31, 2021, and incorporated herein by reference).

Exhibit 10.56 SECOND SUPPLEMENTAL INDENTURE This Second Supplemental Indenture (this ?Supplemental Indenture?), dated as of February 25, 2022, among Kosmos Energy Ltd., a Delaware corporation (the ?Company?), the guarantors listed on the signature pages hereto (the ?Guarantors?) and Wilmington Trust, National Association, as trustee (the ?Trustee?). W I T N E S E T H WHEREAS, each of the Company a

List of Subsidiaries.

Exhibit 21.1 List of Subsidiaries Subsidiary Jurisdiction of Incorporation Kosmos Energy Ltd. Delaware Kosmos Energy Delaware Holdings, LLC Delaware Kosmos Energy Holdings Cayman Islands Kosmos Energy LLC Texas Kosmos Energy Operating Cayman Islands Kosmos Energy Ventures Cayman Islands Kosmos Energy Finance International Cayman Islands Kosmos Energy International Cayman Islands Kosmos Energy Deve

Report of Ryder Scott Company, L.P.

Exhibit 99.1 KOSMOS ENERGY LIMITED Estimated Future Reserves and Income Attributable to Certain Interests Proved Reserves SEC Parameters As of December 31, 2021 /s/ Tosin Famurewa /s/ Victor A. Abu Tosin Famurewa, P.E., S.P.E.C. Victor A. Abu, P.E., S.P.E.C. TBPELS License No. 100569 TBPELS License No. 132717 Managing Senior Vice President / Director Vice President [SEAL] [SEAL] /s/ Christine E. N

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 28, 2022 KOSMOS ENERGY LTD.

Form of Directors Award Agreement (Elective Shares) (filed as Exhibit 10.73 to the Company's Annual Report on Form 10-K for the year ended December 31, 2021, and incorporated herein by reference).

Exhibit 10.73 KOSMOS ENERGY LTD. LONG TERM INCENTIVE PLAN Award Agreement [YEAR] Director Grant ? Elective Shares You have been issued an Award of Shares (this ?Award?) in accordance with your prior election to receive your annual cash retainer (or the applicable portion thereof) for your service as a member of the Board during calendar year [YEAR] (the ?Covered Year?) entirely in the form of Shar

KOSMOS ENERGY ANNOUNCES FOURTH QUARTER AND FULL YEAR 2021 RESULTS Record Quarter for Sales and EBITDAX Record Year for Reserves

Exhibit 99.1 NEWS RELEASE KOSMOS ENERGY ANNOUNCES FOURTH QUARTER AND FULL YEAR 2021 RESULTS Record Quarter for Sales and EBITDAX Record Year for Reserves DALLAS-(BUSINESS WIRE)?February 28, 2022- Kosmos Energy Ltd. (?Kosmos? or the ?Company?) (NYSE/LSE: KOS) announced today its financial and operating results for the fourth quarter of 2021. For the quarter, the Company generated a net income of $9

KOS / Kosmos Energy Ltd / HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC - KOSMOS ENERGY LTD. INITIAL Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No.) KOSMOS ENERGY LTD. (Name of Issuer) Common Shares (Title of Class of Securities) 500688106 (CUSIP Number) Hotchkis & Wiley Capital Management, LLC 601 S. Figueroa Street, 39th Fl. Los Angeles, CA 90017 (Name, Address of person Authorized to Receive Notices

KOS / Kosmos Energy Ltd / Grantham, Mayo, Van Otterloo & Co. LLC - GRANTHAM, MAYO, VAN OTTERLOO & CO. LLC / KOSMOS ENERGY LTD -- SCHEDULE 13G Passive Investment

SC 13G 1 kosmos-sch13g18589.htm GRANTHAM, MAYO, VAN OTTERLOO & CO. LLC / KOSMOS ENERGY LTD - SCHEDULE 13G UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. ) Kosmos Energy Ltd (Name of Issuer) Common Stock (Title of Class of Securities) 500688106 (CUSIP Number) December 31st, 2021 (Date of Event Which Requi

KOS / Kosmos Energy Ltd / VAUGHAN NELSON INVESTMENT MANAGEMENT, L.P. - AMENDMENT NO. 3 TO SCHEDULE 13G Passive Investment

SC 13G/A 1 vaughankos13ga4q2021.htm AMENDMENT NO. 3 TO SCHEDULE 13G UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G (Rule 13d-102) Under the Securities Exchange Act of 1934 (Amendment No. 3) Kosmos Energy Ltd. (Name of Issuer) Common Shares (Title of Class of Securities) 500688106 (CUSIP Number) December 31, 2021 (Date of Event which Requires Filing of this Sta

KOS / Kosmos Energy Ltd / BlackRock Inc. Passive Investment

us5006881065020322.txt SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No: 3) KOSMOS ENERGY LTD - (Name of Issuer) Common Stock - (Title of Class of Securities) 500688106 - (CUSIP Number) December 31, 2021 - (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to

KOS / Kosmos Energy Ltd / FMR LLC Passive Investment

SCHEDULE 13G Amendment No. 5 KOSMOS ENERGY LTD COMMON STOCK Cusip #500688106 Check the appropriate box to designate the rule pursuant to which this Schedule is filed: [x] Rule 13d-1(b) [ ] Rule 13d-1(c) [ ] Rule 13d-1(d) Cusip #500688106 Item 1: Reporting Person - FMR LLC Item 2: (a) [ ] (b) [ ] Item 4: Delaware Item 5: 4,577,808 Item 6: 0 Item 7: 48,577,680 Item 8: 0 Item 9: 48,577,680 Item 11: 1

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): December 21, 2021 (December 19, 2021) KOSMOS ENERGY LTD.

KOS / Kosmos Energy Ltd / cobas asset management, sgiic, s.a. Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No.)* KOSMOS ENERGY, Ltd. (Name of Issuer) Common Stock, $0.01 par value (Title of Class of Securities) 500688106 (CUSIP Number) Gerardo Fernandez, Jose Abascal, 45 st. 28003 Madrid, Spain. 0034917556800 (Name, Address and Telephone Number of Person Authorized t

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 8, 2021 KOSMOS ENERGY LTD.

KOSMOS ENERGY ANNOUNCES THIRD QUARTER 2021 RESULTS

Exhibit 99.1 NEWS RELEASE KOSMOS ENERGY ANNOUNCES THIRD QUARTER 2021 RESULTS DALLAS-(BUSINESS WIRE)?November 8, 2021- Kosmos Energy Ltd. (?Kosmos? or the ?Company?) (NYSE: KOS) announced today its financial and operating results for the third quarter of 2021. For the quarter, the Company generated a net loss of $29 million, or $0.07 per diluted share. When adjusted for certain items that impact th

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2021 ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number:

Entry into a Material Definitive Agreement, Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 26, 2021 KOSMOS ENERGY LTD.

Indenture dated October 26, 2021 among Kosmos Energy Ltd., the guarantors named therein, Wilmington Trust, National Association, as trustee, paying agent, transfer agent and registrar, and Banque Internationale à Luxembourg S.A., as Luxembourg listing agent, Luxembourg paying agent and Luxembourg transfer agent (filed as Exhibit 4.1 to the Company's Current Report on Form 8-K filed October 26, 2021 (File No. 001-35167), and incorporated herein by reference).

Exhibit 4.1 Execution Version SENIOR NOTES INDENTURE Dated as of October 26, 2021 Among KOSMOS ENERGY LTD. THE SUBSIDIARY GUARANTORS LISTED ON THE SIGNATURE PAGES HERETO and WILMINGTON TRUST, NATIONAL ASSOCIATION, as Trustee, Paying Agent, Registrar and Transfer Agent and BANQUE INTERNATIONALE ? LUXEMBOURG S.A., as Luxembourg listing agent, Luxembourg paying agent and Luxembourg transfer agent 7.7

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 19, 2021 (October 14, 2021) KOSMOS ENERGY LTD.

Underwriting Agreement, dated October 14, 2021, between Kosmos Energy Ltd. and Barclays Capital Inc., as representative of the several underwriters listed in Schedule A thereto.

Exhibit 1.1 EXECUTION VERSION 37,500,000 Common Shares KOSMOS ENERGY LTD. UNDERWRITING AGREEMENT October 14, 2021 Barclays Capital Inc. 745 Seventh Avenue New York, New York 10019 Dear Sirs: 1. Introductory. Kosmos Energy Ltd., a Delaware corporation (the ?Company?) proposes to issue and sell to the several underwriters named in Schedule A hereto (the ?Underwriters?), 37,500,000 common shares (the

KOSMOS ENERGY ANNOUNCES LAUNCH OF SENIOR NOTES OFFERING

Exhibit 99.1 NEWS RELEASE KOSMOS ENERGY ANNOUNCES LAUNCH OF SENIOR NOTES OFFERING DALLAS-(BUSINESS WIRE)?October 19, 2021- Kosmos Energy Ltd. (?Kosmos?) (NYSE/LSE:KOS) announced today that, subject to market conditions, it intends to offer $400 million aggregate principal amount of senior notes due 2027. Kosmos intends to use the net proceeds from the offering, together with cash on hand, to refin

Other Events, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 19, 2021 KOSMOS ENERGY LTD.

Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 18, 2021 (October 15, 2021) KOSMOS ENERGY LTD.

CALCULATION OF REGISTRATION FEE

TABLE OF CONTENTS Filed Pursuant to Rule 424(b)(5) Registration No. 333-257246? CALCULATION OF REGISTRATION FEE ? ? Title of Each Class of Securities to be Registered ? ? ? Amount to be Registered ? ? ? Proposed Maximum Offering Price Per Share ? ? ? Proposed Maximum Aggregate Offering Price ? ? ? Amount of Registration Fee(1) ? Common Stock, par value $0.01 per share ? ? ? ? ? 43,125,000 ? ? ? ?

SUBJECT TO COMPLETION, DATED OCTOBER 13, 2021

TABLE OF CONTENTS The information in this prospectus supplement and the accompanying prospectus is not complete and may be changed.

KOSMOS Energy ACQUIREs Additional GHANA INTERESTS FOR $550 MILLION Assets acquired at compelling valuation with a significant enhancement to the five-year plan

Exhibit 99.4 NEWS RELEASE KOSMOS Energy ACQUIREs Additional GHANA INTERESTS FOR $550 MILLION Assets acquired at compelling valuation with a significant enhancement to the five-year plan DALLAS, Texas, October 13, 2021 ? Kosmos Energy (NYSE/LSE: KOS) (?Kosmos? or the ?Company?) announced today that it has acquired an additional 18.0% interest in the Jubilee field and an additional 11.0% interest in

KOSMOS ENERGY ANNOUNCES LAUNCH OF PUBLIC OFFERING OF COMMON STOCK

Exhibit 99.5 KOSMOS ENERGY ANNOUNCES LAUNCH OF PUBLIC OFFERING OF COMMON STOCK DALLAS, Texas, OCTOBER 13, 2021? Kosmos Energy Ltd. (?Kosmos? or the ?Company?) (NYSE/LSE:KOS) announced today that is has launched a registered underwritten public offering of 37,500,000 shares of common stock (the ?Offering?). In addition, Kosmos intends to grant the underwriters a 30-day option to purchase up to an a

Share Purchase Agreement dated October 13, 2021 between Kosmos Energy Ghana Holdings Limited and Anadarko Offshore Holding Company, LLC

Exhibit 2.1 October 13, 2021 ANADARKO OFFSHORE HOLDING COMPANY, LLC (SELLER) -AND- ANADARKO PETROLEUM CORPORATION (SELLER?S GUARANTOR) -AND- KOSMOS ENERGY GHANA HOLDINGS LIMITED (PURCHASER) -AND- KOSMOS ENERGY LTD. (PURCHASER?S GUARANTOR) AGREEMENT for the sale and purchase of the entire issued share capital of Anadarko WCTP Company CONTENTS CLAUSE PAGE 1. Sale and Purchase 1 2. Price 2 3. Leakage

Anadarko WCTP Company sold to Kosmos Energy Ghana Holdings Limited, a wholly-owned subsidiary of Kosmos Energy Ltd.’s Statements of Revenues and Direct Operating Expenses for the Oil and Gas Assets June 30, 2021 and 2020 ANADARKO WCTP COMPANY SOLD TO

Exhibit 99.2 Anadarko WCTP Company sold to Kosmos Energy Ghana Holdings Limited, a wholly-owned subsidiary of Kosmos Energy Ltd.?s Statements of Revenues and Direct Operating Expenses for the Oil and Gas Assets June 30, 2021 and 2020 ANADARKO WCTP COMPANY SOLD TO KOSMOS ENERGY GHANA HOLDINGS LIMITED, A WHOLLY-OWNED SUBSIDIARY OF KOSMOS ENERGY LTD. 1201 Lake Robbins Drive The Woodlands, Texas 77380

Regulation FD Disclosure, Entry into a Material Definitive Agreement, Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant, Completion of Acquisition or Disposition of Assets, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 13, 2021 KOSMOS ENERGY LTD.

Indenture dated October 13, 2021 among Kosmos Energy Ltd., the guarantors named therein and Wilmington Trust, National Association, as trustee, paying agent, transfer agent and registrar (filed as Exhibit 1.1 to the Company's Current Report on Form 8-K filed October 13, 2021 (File No. 001-35167), and incorporated herein by reference).

Exhibit 1.1 SENIOR NOTES INDENTURE Dated as of October 13, 2021 Among KOSMOS ENERGY LTD. THE SUBSIDIARY GUARANTORS LISTED ON THE SIGNATURE PAGES HERETO and WILMINGTON TRUST, NATIONAL ASSOCIATION, as Trustee, Paying Agent, Registrar and Transfer Agent FLOATING RATE SENIOR NOTES Exchangeable Into FIXED RATE SENIOR NOTES TABLE OF CONTENTS Page ARTICLE 1 DEFINITIONS AND INCORPORATION BY REFERENCE 1 Se

Anadarko WCTP Company sold to Kosmos Energy Ghana Holdings Limited, a wholly-owned subsidiary of Kosmos Energy Ltd.’s Statements of Revenues and Direct Operating Expenses for the Oil and Gas Assets December 31, 2020 and 2019 (With Independent Auditor

Exhibit 99.1 Anadarko WCTP Company sold to Kosmos Energy Ghana Holdings Limited, a wholly-owned subsidiary of Kosmos Energy Ltd.?s Statements of Revenues and Direct Operating Expenses for the Oil and Gas Assets December 31, 2020 and 2019 (With Independent Auditors? Report Thereon) ANADARKO WCTP COMPANY SOLD TO KOSMOS ENERGY GHANA HOLDINGS LIMITED, A WHOLLY-OWNED SUBSIDIARY OF KOSMOS ENERGY LTD. 12

KOSMOS ENERGY LTD. AND SUBSIDIARIES UNAUDITED PRO FORMA CONDENSED COMBINED FINANCIAL INFORMATION

Exhibit 99.3 KOSMOS ENERGY LTD. AND SUBSIDIARIES UNAUDITED PRO FORMA CONDENSED COMBINED FINANCIAL INFORMATION The following Unaudited Pro Forma Condensed Combined Balance Sheet as of June 30, 2021 and the Unaudited Pro Forma Condensed Combined Statements of Operations for the six months ended June 30, 2021 and for the year ended December 31, 2020 have been derived from the historical consolidated

KOS / Kosmos Energy Ltd / FMR LLC Passive Investment

SCHEDULE 13G Amendment No. 4 KOSMOS ENERGY LTD COMMON STOCK Cusip #500688106 Check the appropriate box to designate the rule pursuant to which this Schedule is filed: [x] Rule 13d-1(b) [ ] Rule 13d-1(c) [ ] Rule 13d-1(d) Cusip #500688106 Item 1: Reporting Person - FMR LLC Item 2: (a) [ ] (b) [ ] Item 4: Delaware Item 5: 3,002,409 Item 6: 0 Item 7: 39,279,861 Item 8: 0 Item 9: 39,279,861 Item 11: 9

KOS / Kosmos Energy Ltd / cobas asset management, sgiic, s.a. Passive Investment

SC 13G/A 1 kosmos5.txt UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No.)* KOSMOS ENERGY, Ltd. (Name of Issuer) Common Stock, $0.01 par value (Title of Class of Securities) 500688106 (CUSIP Number) Gerardo Fernandez, Jose Abascal, 45 st. 28003 Madrid, Spain. 0034917556800 (Name, Address and Telephone Number

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2021 ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 001-3

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 9, 2021 KOSMOS ENERGY LTD.

KOSMOS ENERGY ANNOUNCES SECOND QUARTER 2021 RESULTS

Exhibit 99.1 NEWS RELEASE KOSMOS ENERGY ANNOUNCES SECOND QUARTER 2021 RESULTS DALLAS-(BUSINESS WIRE)?August 9, 2021- Kosmos Energy Ltd. (?Kosmos? or the ?Company?) (NYSE: KOS) announced today its financial and operating results for the second quarter of 2021. For the quarter, the Company generated a net loss of $57 million, or $0.14 per diluted share. When adjusted for certain items that impact th

Amended and Restated Facility Agreement, effective May 12, 2021 among Kosmos Energy Finance International, Kosmos Energy Operating, Kosmos Energy International, Kosmos Energy Development, Kosmos Energy Ghana HC, Kosmos Energy Equatorial Guinea, ABSA Bank Limited, Credit Agricole Corporate and Investment Bank, ING Belgium SA/NV, Natixis, N.B.S.A Limited, Societe Generale, London Branch, The Standard Bank of South Africa Limited, Isle of Man Branch, Standard Chartered Bank, and SMBC Bank International PLC (filed as Exhibit 10.1 to the Company's Quarterly Report on Form 10-Q for the quarter ended June 30, 2021, and incorporated herein by reference).

Exhibit 10.1 EXECUTION VERSION KOSMOS ENERGY FINANCE INTERNATIONAL as Borrower - and - KOSMOS ENERGY FINANCE INTERNATIONAL, KOSMOS ENERGY OPERATING, KOSMOS ENERGY INTERNATIONAL, KOSMOS ENERGY DEVELOPMENT, KOSMOS ENERGY GHANA HC AND KOSMOS ENERGY EQUATORIAL GUINEA as Guarantors - and - ABSA BANK LIMITED (ACTING THROUGH ITS CORPORATE AND INVESTMENT BANKING DIVISION), CR?DIT AGRICOLE CORPORATE AND IN

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 6, 2021 KOSMOS ENERGY LTD.

KOSMOS ENERGY OPERATIONAL UPDATE

NEWS RELEASE KOSMOS ENERGY OPERATIONAL UPDATE DALLAS, Texas, July 6, 2021 ? Kosmos Energy (NYSE/LSE: KOS) (?Kosmos? or the ?Company?) today provided an operational update on its production, development and exploration activities.

Power of Attorney

Exhibit 24.1 POWER OF ATTORNEY KNOW ALL PERSONS BY THESE PRESENTS, that each individual whose signature appears below hereby constitutes and appoints each of Andrew G. Inglis, Neal D. Shah and Jason E. Doughty acting singly, his or her true and lawful agent, proxy and attorney-in-fact, with full power of substitution and resubstitution, for him or her and in his or her name, place and stead, in an

As filed with the Securities and Exchange Commission on June 21, 2021

As filed with the Securities and Exchange Commission on June 21, 2021 Registration No.

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 11, 2021 KOSMOS ENERGY LTD.

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 9, 2021 KOSMOS ENERGY LTD.

KOSMOS Energy APPOINTS ROY A. FRANKLIN TO BOARD OF DIRECTORS

Exhibit 99.1 NEWS RELEASE KOSMOS Energy APPOINTS ROY A. FRANKLIN TO BOARD OF DIRECTORS DALLAS, Texas, June 10, 2021 ? Kosmos Energy (NYSE/LSE: KOS) announced today that Mr. Roy A. Franklin has joined its Board of Directors, effective June 9, 2021. Mr. Franklin is a senior executive with more than 45 years in the energy industry and extensive board experience in multiple companies both in the publi