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
THIS AMENDMENT TO THE PETROLEUM AGREEMENT DATED 10 MARCH 2006 RELATING TO THE DEEPWATER TANO CONTRACT AREA OFFSHORE REPUBLIC OF
GHANA (“DWT PA”) (the “Amendment”).
is made this 19th day of December 2025 (the “Execution Date”)
AMONG:
(1)The Government of the Republic of Ghana represented by the Ministry of Energy and Green Transition (the “State”);
(2)Ghana National Petroleum Corporation (“GNPC”);
(3)GNPC Exploration and Production Limited Company (“Explorco”)
(4)Tullow Ghana Limited (“Tullow”);
(5)Kosmos Energy Ghana HC (“Kosmos”);
(6)Kosmos Energy Ghana Investments (formerly Anadarko WCTP Company) (“KEGIN”); and
(7)PetroSA Ghana Limited (“PetroSA”).
Each party shall be referred to as a “Party” and collectively as “Parties”. Tullow, Kosmos, KEGIN, PetroSA and Explorco shall be collectively referred to as “Contractor Parties”
PREAMBLE
A.The Parties are parties to the Petroleum Agreement dated 10 March 2006 related to the Deepwater Tano (“DWT”) Contract Area Offshore Ghana which is due to expire on 19 July 2036.
B.Recognizing that production from the Contract Area will extend beyond the term of the DWT PA, the Contractor Parties, the State and GNPC wish to amend the provisions of the DWT PA, including extending the term of the DWT PA.
C.In accordance with Section 14(2)(a) of the Petroleum (Exploration and Production) Act 2016 Act 919, the Minister of Energy and Green Transition is authorized to extend the term of a petroleum agreement subject to Parliamentary approval.
Contractor Parties, in accordance with the terms and conditions of an amendment to the Greater Jubilee Full Field Development Plan dated 15 September 2017 (GJFFDP) submitted to the Ministry of Energy and Green Transition in December 2025 (the “GJFFDP Amendment”) shall be drilling a minimum of ten (10) and a maximum of twenty (20) wells
in the Jubilee Field in addition to the wells yet to be drilled under the current GJFFDP incorporating a gas price of US$2.50/MMBtu.
NOW, THEREFORE, in consideration of the mutual covenants herein contained, it is hereby agreed and declared as follows:
1.DEFINITIONS
Capitalized terms, unless expressly defined in the body of this Amendment, are as set forth in the DWT PA.
2.EXTENSION TO THE TERM OF THE DWT PA
Article 23.1 of the DWT PA is deleted and replaced as follows:
“Subject to this Article 23 the term of this Agreement shall continue until 31 December 2040.”
3.GNPC’S FURTHER ADDITIONAL INTEREST
(a)Article 2.5 of the DWT PA shall be renamed Article 2.5(a), and a new paragraph (b) shall be added to Article 2.5 of the DWT PA as follows:
“2.5(b) In addition to GNPC’s Additional Interest of five percent (5%) as set forth in Article 2.5(a) above (the “Original Additional Interest”), GNPC shall be deemed to acquire a further Additional Interest of ten percent (10%) (the “Further Additional Interest”) in all Petroleum Operations under this Agreement effective as from 20 July 2036 (the “Further Additional Interest Effective Date”), resulting in GNPC owning a total Additional Interest in the amount of fifteen percent (15%).
In respect of the Further Additional Interest, GNPC shall pay only Production Costs as approved by the JMC as from the Further Additional Interest Effective Date and the rights of Contractor to recover Petroleum Costs for the Original Additional Interest as set forth in Article 2.5(a) shall apply to the Further Additional Interest as from the Further Additional Interest Effective Date. For the avoidance of doubt, GNPC shall not be responsible for any payment obligations associated with the Further Additional Interest prior to the Further Additional Interest Effective Date.
Article 2.7 of the DWT PA shall be amended as follows
i.By insertion of “Article 2.5(a)” in place of Article 2.5 under paragraph 2.7(a) and 2.7(b)(ii).
ii.By insertion of “Further Additional Interest acquired under Article 2.5(b)” as a new Article 2.7(b)(iii).
(b)Article 2.9 of the DWT PA shall be deleted and replaced as follows:
“Article 2.9 (a) The Contractor Parties shall transfer the Further Additional Interest to GNPC pro rata to their current Participating Interests.
Article 2.9 (b) With effect from the Further Additional Interest Effective Date, Contractor’s Participating Interest in all Petroleum Operations and in all rights under this Agreement shall be seventy- five percent (75%).
4.US DOLLAR-BASED PRICE INDEX
Article 10.2 of the DWT PA shall be amended so that references to the United States Industrial Goods Wholesale Price Index ("USIGWPI”) (which is no longer in existence) shall be replaced with the United States Producer Price Index (US PPI).
5.MISCELLANEOUS
(a)Save for the amendments to the DWT PA as set forth herein, the provisions of the DWT PA shall continue in full force and effect and remain unchanged.
(b)This Amendment shall take effect as of the latest of:
(i)its Execution Date;
(ii)the date of its ratification by the Parliament of Ghana;
(iii)the date of approval by the Minister of Energy and Green Transition of the GJFFDP Amendment;
(iv)the date of ratification by the Parliament of Ghana of the Master Gas Agreement (the “Amendment Effective Date”)
(c)A dispute or a difference arising between the State and GNPC or either of them on the one hand and Contractor on the other hand in relation to or in connection with or arising out of this Amendment, shall be resolved in accordance with Article 24 of the DWT PA, which is expressly incorporated into this Amendment.
This Agreement may be executed in any number of counterparts, each of which shall be deemed an original and all of which together shall constitute one and the same instrument.
Signatures delivered by facsimile or other electronic means shall be deemed effective for all purposes.
[Signature Pages Follow]
SIGNED on behalf of
THE GOVERNMENT OF THE REPUBLIC OF GHANA
(Represented by the Minister of Energy and Green Transition) by}
/s/ Dr. John Abdulai Jinapor
Name: Hon. Dr. John Abdulai Jinapor (MP)
Designation: Hon. Minister, Ministry of Energy & Green Transition
SIGNED on behalf of
GHANA NATIONAL PETROLEUM COMPANY by}
/s/ Kwame Ntow Amoah
Name: Kwame Ntow Amoah
Designation: AG Chief Executive
SIGNED on behalf of
GNPC EXPLORATION AND PRODUCTION COMPANY LIMITED by}
/s/ Samuel Opoku Arthur
Name: Samuel Opoku Arthur
Designation: Managing Director
SIGNED on behalf of
TULLOW GHANA LIMITED by}
/s/ Mike Walsh
Name: Mike Walsh
Designation: Director
SIGNED on behalf of
KOSMOS ENERGY GHANA HC by}
/s/ Joe Mensah
Name: Joe Mensah
Designation: Senior Vice President, Head of Ghana Business Unit
SIGNED on behalf of KOSMOS ENERGY GHANA INVESTMENTS by}
/s/ Joe Mensah
Name: Joe Mensah
Designation: Senior Vice President, Head of Ghana Business Unit
SIGNED on behalf of
PETROSA GHANA LIMITED by}
/s/ Linda Nene
Name: Linda Nene
Designation: General Manager: PGL