Document:

Exhibit 10.4

  

VETRA EXPLORACIÓN y PRODUCCIÓN
COLOMBIA S.A.S.

 

as Seller

 

and

 

SOUTHEAST INVESTMENT CORPORATION, through
its Colombian branch, 

SOUTHEAST INVESTMENT CORPORATION 

 

as Purchaser

 

and

 

INVERSIONES FRIEIRA, S.L.

 

VETRA ENERGY GROUP LLC

 

as

 

Parent Companies;

 

 

 

SALE AND
PURCHASE AGREEMENT*

for

SURORIENTE

 

 

 

    	 		 

     

    

  

TABLE OF CONTENTS

 

 

	Article 1 DEFINITIONS AND INTERPRETATION	7
	 	 
	1.1	Definitions	7
	1.2	Interpretation	14
	1.3	Schedules	14
	 	 	 
	Article 2 ASSIGNMENT OF INTEREST	15
	 	 
	2.1	Grant	15
	2.2	Binding Effect	15
	2.3	Execution of other Documents	15
	2.4	Ownership	15
	2.5	Actions after Execution Date	16
	 	 	 
	Article 3 closing	16
	 	 
	3.1	Closing Timing	16
	3.2	Closing Deliverables	16
	3.3	Effects of Closing	16
	3.4	Actions on and after Closing Date	17
	3.5	Approvals and Waivers	18
	 	 	 
	Article 4 CONDITIONS PRECEDENT TO CLOSING	19
	 	 
	4.1	Conditions to the Obligations of Purchaser	19
	4.2	Conditions to the Obligations of Seller	19
	4.3	Endeavors	20
	 	 	 
	Article 5 .  PURCHASE PRICE AND PAYMENT	20
	 	 
	5.1	Purchase Price	20
	5.2	Payment of Purchase Price	20
	5.3	Costs	20
	 	 	 
	Article 6 OBLIGATIONS OF THE PARTIES	20
	 	 
	6.1	Seller’s Obligations	20
	6.2	Purchaser’s Obligations	22
	6.3	Mutual Obligations	22
	 	 	 
	Article 7 REPRESENTATIONS AND WARRANTIES OF THE PARTIES	23
	 	 
	7.1	Seller’s Representations and Warranties	23
	7.2	Limitations of Seller’s Representations and Warranties	29
	7.3	Purchaser’s Representations and Warranties	29
	7.4	Mutual Representations and Warranties	31
	7.5	Disclaimer of Other Representations and Warranties	31
	7.6	Timing of Representations	32

 

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	Article 8 LIABILITIES AND CLAIMS	32
	 	 
	8.1	Liability Acknowledgement Agreement	32
	 	 	 
	Article 9 Settlement of Claims	32
	 	 
	Article 10 TAX	 	32
	 	 	 
	10.1	Tax Obligations	32
	10.2	Joint Levy	32
	 	 	 
	Article 11
CONFIDENTIALITY
	33
	 	 
	11.1	Confidentiality	33
	11.2	Exceptions	33
	11.3	Limit in time	34
	 	 	 
	Article 12 Costs	34
	 	 
	Article 13 Entire agreement	34
	 	 
	13.1	Entire agreement	34
	 	 	 
	Article 14 Continuing effect	34
	 	 
	14.1	Continuing Effect	34
	14.2	Invalidity	34
	 	 	 
	Article 15 Amendments and waivers	35
	 	 
	15.1	Amendments	35
	15.2	Waivers	35
	 	 	 
	Article 16 Further assurance and assistance	35
	 	 
	16.1	Further assurance	35
	 	 	 
	Article 17 Counterparts	35
	 	 
	17.1	Any number of counterparts	35
	 	 	 
	Article 18 NOTICES	35
	 	 
	18.1	Notices	35
	18.2	When notices take effect	37
	 	 	 
	Article 19 ARBITRATION	37
	 	 
	19.1	Settling Disputes	37
	19.2	Exceptions	37
	19.3	Arbitration	37
	 	 	 
	Article 20 Governing law	38
	 	 
	20.1	Governing law	38

 

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	Article 21 INDEPENDENT LEGAL ADVICE	38
	 	 
	Article 22 Seller’s assignees	38
	 	 
	Article 23 GENERAL PROVISIONS	39
	 	 
	23.1	Further Assurances	39
	23.2	Non-Waiver	39
	23.3	Joint Preparation	39
	23.4	Severance of Invalid Provisions	39
	23.5	Modifications	40
	23.6	Priority of Agreement	40
	23.7	Public Announcements	40
	23.8	Entirety	40
	23.9	No Merger	40
	23.10	Partnership	40
	 	 	 
	Article 24		41

 

    	 	4	 

     

    

 

ADDENDA

 

	SCHEDULE A CONTRACT AREA	A-1
	SCHEDULE B SELLER’S INTEREST	B-1
	SCHEDULE C MATERIAL CONTRACTS	C-1
	SCHEDULE D HYDROCARBON SALES CONTRACTS	D-1
	SCHEDULE E MANDATE AGREEMENT	E-1
	SCHEDULE F EMPLOYEES	F-1

 

    	 	5	 

     

    

 

SALE AND PURCHASE AGREEMENT

 

THIS AGREEMENT
is dated 20 February, 2019 (the “Execution Date”) and made between:

 

Vetra Exploración y
Producción Colombia S.A.S., a company incorporated and existing under the laws of Colombia,
whose registered office is at Avenida Calle 82 No. 10-33, 7th Floor, Bogotá, Colombia;

 

(“Seller”)

 

and

 

Southeast Investment Corporation,
a company incorporated and existing under the laws of Panama, acting through its Colombian branch, Southeast Investment
Corporation, whose registered office is at c/o Patton, Moreno & Asvat, 8th Floor, Capital
Plaza Building Roberta Motta Ave., Costa Del Este, Panama City, Republic of Panama.

 

(“Purchaser”)

 

Inversiones Frieira, S.L.,
a company incorporated and existing under the laws of the Kingdom of Spain whose registered office
is at Avenida de Linares Rivas 1, bajo entreplanta, 15005 La Coruña, Spain;

 

and

 

Vetra Energy Group LLC, a
company incorporated under the laws of Delaware, whose registered office is at 1209 Orange Street Wilmington, Delaware, United
States.

 

(jointly,
the “Parent Companies”);

 

Parent
Companies enter into this Agreement for the purposes of assuming the obligations set forth under Article 22 of this Agreement.

 

WHEREAS, simultaneously
with the execution of this Agreement, (i) Vetra Energía, S.L. and Gran Tierra Resources Limited have entered into the Share
Sale Agreement (as defined below) for the issued share capital of Vetra Southeast S.L.U and indirectly, Vetra Energía, S.L.’s
interest in its interest in Southeast Investment Corporation, (ii) Seller and Gran Tierra Energy Colombia, LLC have entered the
Asset Sale Agreement (Exploration Blocks) (as this term is defined in the Share Sale Agreement) and (iii) Vetra Energía,
S.L., Seller, Gran Tierra Resources Limited, Gran Tierra Energy Colombia LLC and Southeast Investment Corporation have entered
into the Liability Acknowledgement Agreement (the as defined below, and together with the Asset Sale Agreement (Exploration Blocks)
and the Share Sale Agreement, the “Relevant Agreements”) to regulate, among other things, the liability of the
corresponding parties under this Agreement, the Share Sale Agreement and the Asset Sale Agreement (Exploration Blocks).

 

    	 	6	 

     

    

 

WHEREAS, it
is the intention of the Parties that Closing will occur immediately after and on the same day as the Closing Date set out in the
Share Sale Agreement, and not to close the transactions contemplated in the Share Sale Agreement without also completing the Closing
as set out herein.

 

WHEREAS, an
affiliate of the Purchaser, will, by a series of directions to pay, be paying the Purchase Price on behalf of the Purchaser, to
the Seller;

 

WHEREAS, Seller
is willing to assign and transfer the Assigned Interest (as defined below) to Purchaser and Purchaser is willing to acquire the
Assigned Interest, in accordance with the terms and conditions set forth herein.

 

NOW, THEREFORE,
in consideration of premises and the mutual covenants and obligations set out below and to be performed, the Parties agree as follows:

 

Article 1

DEFINITIONS AND INTERPRETATION

 

		1.1	Definitions

 

As used in this Agreement,
the following capitalized words and terms shall have the meaning ascribed to them below:

 

“Affiliate”
means with respect to any person, any other person controlling, controlled by or under common control with such first person. For
purposes of this definition and this Agreement, the term “control” (and correlative terms) means (a) the ownership
of fifty percent (50%) or more of the equity interest in a person, and/or (b) the power, whether by contract, equity ownership
or otherwise, to direct or cause the direction of the policies or management of a person;

 

“Agreement”
means this Sale and Purchase Agreement together with its Schedules and any extension, renewal or amendment hereof agreed to in
writing by the Parties;

 

“Applicable Laws”
means laws, regulations, statutes, codes, rules, orders, permits, policies, licenses, certifications, decrees, standards or interpretations
imposed by any Governmental Authority that apply to this Agreement, the Seller, the Purchaser or to their assets, activities or
contracts. For the avoidance of doubt, “Applicable Laws” also include any applicable anti-corruption laws including
the FCPA and the CFPOA;

 

“Asset Sale Agreement
PUT-8” (PUT-8) means the Sale and Purchase Agreement dated as of the Execution Date between Vetra E&P as seller and
GTEC, as purchaser;

 

“Asset Sale Agreement
LLA-5”(LLA-5) means the Sale and Purchase Agreement dated as of the Execution Date between Vetra E&P as seller and
GTEC, as purchaser;

 

“Asset Sale Agreements”
means collectively, the Agreement, the Asset Sale Agreement PUT-8 and Asset Sale Agreement LLA-5;

 

“Assigned Interest”
means the Suroriente Assigned Interest, including operatorship under the CPI Contract;

 

    	 	7	 

     

    

 

“Assignment of Obligations”
has the meaning ascribed to it in Article 22;

 

“Assignment of Rights”
has the meaning ascribed to it in Article 22;

 

“Associated Parties”
means the relevant Party’s employees, directors, Affiliates, agents, intermediaries, consultants, other third party representatives,
or any other person, while performing services for or on behalf of the relevant Party.

 

“Benefits”
means, collectively, all income, receipts, rebates and other benefits which arise from, based upon, related to or associated with
the Assigned Interest, including in respect of taxation relating to operations under the CPI Contract in respect of the Assigned
Interest;

 

“Books and Records”
includes all records, books, documents, licenses, reports and data which relate to the CPI Contract, the Contract Area and
the Tangible Assets, or any of them;

 

“Business Day”
means any day other than a Saturday, Sunday, or a day on which commercial banks are required or authorized by law to be closed
for business in Madrid, Spain, Bogotá, Colombia, or Calgary, Canada;

 

“CCE” means
the Consorcio Colombia Energy, which is the “associate” under the CPI Contract;

 

“Claim” has
the meaning ascribed to it in the Liability Acknowledgement Agreement;

 

“Closing”
means the completion of the sale of the Suroriente Assigned Interest in accordance with Article 3;

 

“Closing Date”
has the meaning ascribed to it in the Share Sale Agreement;

 

“Conditions Precedent”
means all of the conditions enumerated in Sections 4.1 and 4.3;

 

“Contract Amendment”
means an amendment to the CPI Contract giving effect to the transfer of the Assigned Interest from Seller to Purchaser, in the
form determined in accordance with Section 3.5(b)(ii);

 

“Contract Area”
means the area or block subject to the CPI Contract, as is more described for convenience in the attached Schedule A;

 

“CPI Contract”
means the Incremental Production Contract with Ecopetrol for the Suroriente Block, and any and all extensions, renewals or amendments;

 

“CPI Documents”
means the CPI Contract and any other documents pertaining to the CPI Interests, including any joint operating agreements, farm-outs,
any joint venture or similar operational agreements;

 

“CPI Interests”
means the interest of Seller in the CPI Contract as described in Schedule B;

 

    	 	8	 

     

    

 

“Credit Agreement”
means the amended and restated credit agreement signed between Seller, Vetra Southeast S.L.U., and Citibank, N.A. (as administrative
Agent) and Citigroup Global Markets Inc. and Banca de Inversión Bancolombia S.A. Corporación Financiera (as Co-lead
arrangers) dated as of August 1, 2016;

 

“Credit Amount”
has the meaning ascribed to it in the Liability Acknowledgement Agreement;

 

“Deed of Assignment
and Assumption Agreement” means the instrument to be filed with Ecopetrol, whereby Seller transfers and conveys the Assigned
Interest to Purchaser, and Purchaser formally accepts and receives the Assigned Interest, in a form to be agreed upon by the Parties;

 

“Deed
of Termination of the Sales Contract” means the instrument whereby the Parties will terminate the Sales Contract, in
a form to be agreed upon by the Parties, to be effective on the Closing Date;

 

“Disclosed Materials”
has the meaning set out in Share Sale Agreement;

 

“Dollars”
or “US$” means the lawful currency from time to time of the United States of America;

 

“Ecopetrol”
means Ecopetrol S.A.;

 

“Ecopetrol Claim”
has the meaning ascribed to it in the Liability Acknowledgement Agreement;

 

“Ecopetrol Notice”
means the submission to Ecopetrol of the notice required under the CPI Contract in connection with the Transaction, in the form
to be agreed upon by the Parties;

 

“Effective Date”
means the Execution Date;

 

“Employees” means
the employees described in Schedule F;

 

“Employment Assignments”
means the assignment and novation agreements in respect of the Employment Contracts from Seller to Purchaser and/or a designate
of Purchaser (with Purchaser or its designate identified to Seller for each Employee prior to Closing);

 

“Employment Contracts”
means the contracts of engagement or employment of the Employees;

 

“Encumbrance(s)”
means any and all liens, charges (fixed or floating), prior claim, options, carried interest, security interests, Royalties, pledges,
options, net profit interests, carried working interest, farm-out (or similar) agreement under which earning has not occurred or
a payment is still pending, rights of pre-emption or any other agreement that would affect Seller ́s ability to freely dispose
the Assigned Interest or any portion thereof, restrictions, mortgages, adverse claims, title retention arrangements, leases, and
any other agreements or arrangements having a similar effect or any agreement to create any of the foregoing;

 

    	 	9	 

     

    

 

“Environment”
means the components of the earth and includes ambient air, land, surface and sub-surface strata, groundwater, lake, river or other
surface water, all layers of the atmosphere, all organic and inorganic matter and living organisms, and the interacting natural
systems that include such components;

 

“Environmental Laws”
means all Laws relating to pollution or the protection of natural resources or the Environment or health and human safety, including
those Laws relating to the release or threatened release of, or exposure to, hazardous substances, and those Laws regulating the
generation, manufacture, distribution, use, processing, treatment, storage, transportation, disposal, arrangement for transport
or disposal, or other management of hazardous substances;

 

“Estimated Working Capital”
has the meaning ascribed to it in the Share Sale Agreement;

 

“Excluded Asset Claims”
means any Claims arising from the breach of Seller’s Warranties in Sections 7.1(1), 7.1(2), 7.1(12), 7.4(1), and the Ross
Energy Claim;

 

“Execution Date”
means the date upon which this Agreement is executed by the Parties, as set out at the beginning of this Agreement;

 

“Facilities”
means all pipelines, plant, machinery, wells (including production, injection, disposal, suspended, abandoned), facilities and
all other installations and structures which are used in connection with the CPI Contract, which are Joint Property;

 

“Force Majeure”
has the meaning as is set out in the CPI Contract;

 

“Governmental Authority”
has the meaning ascribed to it in the Share Sale Agreement;

 

“Hazardous Substance”
means any substance that, by its nature or its use, is regulated or as to which liability might arise under any Environmental Law
including any natural or artificial substance or thing (whether in solid, liquid, gas, vapour or other form and whether alone or
in combination with any other substance or thing) capable of causing harm to any living organism supported by the Environment,
or damage to the Environment, including Hydrocarbons and petroleum products, pollutants, asbestos containing materials, polychlorinated
biphenyls, radioactive materials, urea formaldehyde foam insulation, naturally occurring radioactive materials or radon gas, contaminants,
naturally occurring radioactive material, radiation, electricity, heat and any waste;

 

“Hydrocarbons”
means any substances including liquid and gaseous hydrocarbons, with respect to which the right to explore for and produce is granted
pursuant to the CPI Contract;

 

“Hydrocarbon Sales Contracts”
means all contracts for the processing, transportation, storage, marketing and sale of Hydrocarbons produced from or in respect
of the Contract Area, a complete listing of which is set forth in Schedule D;

 

“Interim Period”
means the period commencing from the Execution Date and ending on the Closing Date;

 

    	 	10	 

     

    

  

“Invoice” has
the meaning ascribed to it in Section 5.1;

 

“JOA” means
the Joint Operating Agreement signed between the Parties on August 1, 2015, which pertains to the CPI Contract, and any amendment
thereto;

 

“Joint Property”
means joint property under the JOA;

 

“Knowledge”
means, with respect to Seller, the actual knowledge (after reasonable inquiry, but otherwise excluding constructive or imputed
knowledge) of the directors, officers, and senior managers of the Seller;

 

“Liability Acknowledgement
Agreement” means the Liability Acknowledgement Agreement dated as of the Execution Date among Vetra Energía, S.L.,
Seller, Gran Tierra Resources Limited, Gran Tierra Energy Colombia, LLC, and Purchaser;

 

“Losses” has
the meaning ascribed to it in the Liability Acknowledgement Agreement.;

 

“Material Contracts”
means the Hydrocarbon Sales Contracts and all other material contracts, agreements, instruments, transactions and undertakings
pertaining to the CPI Contract, the Contract Area, the Tangible Assets or any of them, a complete listing of which is set forth
in Schedule C;

 

“Miscellaneous Interests”
means all property, assets, interests and rights of Seller pertaining to the CPI Contract, the Contract Area and the Tangible Assets,
or any of them, but only to the extent that such property, assets, interests and rights pertain to the CPI Contract, the Contract
Area and the Tangible Assets, or any of them, including any and all of the following:

 

		(a)	the Material Contracts;

 

		(b)	rights to own, enter upon, use or occupy the surface of any lands which are or may be used to gain
access to, or conduct operations on, the Contract Area, or to gain access to, or otherwise use, the Tangible Assets or any of them;

 

		(c)	licenses, permits, approvals and all other authorizations pertaining to the conduct of operations
on or in respect of the Contract Area and the Tangible Assets, or any of them;

 

		(d)	the Books and Records;

 

		(e)	the Technical Data;

 

		(f)	all wells, including well bores and casing, upon, or with bottom-hole locations situated within,
the Contract Area; and

 

		(g)	all deposits and contributions to funds maintained in respect of the CPI Contract, the Contract
Area and the Tangible Assets, or any of them.

 

    	 	11	 

     

    

 

“Money Laundering Laws”
means financial recordkeeping and reporting requirements and requirements as to identification of persons of the money laundering
statutes, the rules and regulations thereunder and any related or similar rules, regulations or guidelines issued by Governmental
Authorities;

 

“Obligation and Plans”
has the meaning ascribed to it in Section 7.1(7)(a);

 

“OFAC” has
the meaning ascribed to it in Section 7.1(12)(e);

 

“Operations”
means the operations on or pertaining to the CPI Contract conducted under the CPI Contract and/or the JOA;

 

“Operator”
means Seller;

 

“Parent Companies”
has the meaning ascribed to it in Section 22.1;

 

“Participating Interest”
means, as to any party to the CPI Documents, the undivided interest of such party expressed as a percentage of the total interests
of all parties to the CCE, CPI Contract, in the rights and obligations derived from the CPI Contract and the JOA;

 

“Preferential Rights”
means a right of first refusal, pre-emptive right of purchase or similar right whereby any Third Party has the right to acquire
or purchase the Assigned Interest, or affect the terms of the Assigned Interest in any way, whether arising under contract, Law,
or otherwise;

 

“Purchase Price”
shall mean the amount payable by Purchaser to Seller as set forth in Section 5.1;

 

“Regulatory Approval”
means: (i) the earlier of: (A) confirmation of receipt by the Superintendence of Industry and Commerce of the Republic of Colombia
in respect of the SIC Notice; (B) the date that is ten (10) Business Days following the submission of the SIC Notice if the Superintendence
of Industry and Commerce of the Republic of Colombia has not sought further information with respect to the SIC Notice; and (C)
if the Superintendence of Industry and Commerce of the Republic of Colombia has sought further information with respect to the
SIC Notice, the date on which receipt of the complete submission of additional information is received by the Superintendence of
Industry and Commerce;

 

“Release”
means any depositing, spilling, leaking, pumping, pouring, placing, emitting, discarding, abandoning, emptying, discharging, migrating,
injecting, escaping, leaching, seeping, dumping, or disposing;

 

“Ross Energy Claim”
has the meaning given to it in the Share Sale Agreement;

 

“Sales Contract”
means the Sales Contract signed between the Parties on April 29, 2016, as amended by Amendment No. 1 dated June 21, 2017, which
relates to Cohembí, Quinde, and Quillacinga crude oil;

 

“SDNs” has
the meaning given in Section 7.1(12)(e);

 

“Seller’s Warranties”
means the representations and warranties set out in Section 7.1 given and made by Seller in favour of the Purchaser;

 

    	 	12	 

     

    

  

“Share Sale Agreement”
means the Sale and Purchase Agreement dated as of the Execution date between Vetra Energía, S.L. as seller and Gran Tierra
Resources Limited, as purchaser for the issued share capital of Vetra Southeast S.L.U;

 

“SIC Notice”
means the submission of such notice or notices to the Superintendent of Industry and Commerce of the Republic of Colombia under
Law 1340 of 2009 required in connection with the Transaction;

 

“Suroriente Assigned
Interest” means Sellers entire interest in the CCE, the JOA and the CPI Contract, comprising of an undivided thirty-seven
point nine three five three percent Participating Interest in the CCE and JOA (37.9353%), which is equivalent to an undivided nineteen
point seven two six four percent (19.7264%) indirect Participating Interest in and under the CPI Contract, together with an undivided
nineteen point seven two six four percent (19.7264%) legal and beneficial interest in and to all Tangible Assets and Miscellaneous
Interests relating to CPI Contract or operations under the CPI Contract;

 

“Tangible Assets”
means the Facilities and any other tangible property and assets which are used or are intended to be used to produce, process,
gather, treat, measure, make marketable or inject Hydrocarbons or any of them or in connection with water injection or removal
operations on or in respect of the Contract Area and/or operations conducted under the CPI Contract, that are Joint Property, or
otherwise owned by Seller;

 

“Tax” means
all forms of taxation whether direct or indirect, and whether levied by reference to income, profits, gains, net wealth, asset
value, turnover, added value or other sales tax, and statutory, governmental, state, provincial, local government or municipal
imposition duties, contributions, rates and levies (including without limitation any payroll taxes), whenever and wherever imposed
(whether imposed by way of a withholding or deduction for or on account of tax or otherwise) and in respect of any person, and
all penalties, charges, costs and interest relating thereto;

 

“Technical Data”
includes all seismic, seismic data (and all processed versions thereof, including for but not limited to all 2D and 3D seismic,
SEGY files, field notes, field tapes, survey notes, seismic projects, interpretation projects and any seismic in fulfillment of
contractual commitments), geological (including all geological studies such as those that may have been made in fulfillment of
commitments to the ANH or Ecopetrol), geophysical, engineering, well files, Facility and other records, files, reports, data, correspondence
and documents that pertain to the Contract Area and the Tangible Assets, or any of them (including Seller’s evaluations and
interpretations of any of the foregoing and all documents of title relating to the Contract Area);

 

“Third Party”
means any person other than the Parties;

 

“Third Party Claim”
has the meaning ascribed to it in the Liability Acknowledgement Agreement; and

 

“Transaction”
means the purchase and sale of the Assigned Interest as contemplated by this Agreement.

 

    	 	13	 

     

    

  

		1.2	Interpretation

 

		(a)	Headings. The topical headings used in this Agreement are for convenience only and shall
not be construed as having any substantive significance or as indicating that all of the provisions of this Agreement relating
to any topic are to be found in any particular Article.

 

		(b)	Singular and Plural. Reference to the singular includes a reference to the plural and vice
versa.

 

		(c)	Gender. Reference to any gender includes a reference to all other genders.

 

		(d)	Article. Unless otherwise provided, reference to any Article or Section or Schedule means
an Article or Section or Schedule of the Agreement.

 

		(e)	Include. “include” and “including” shall mean
to be inclusive without limiting the generality of the description preceding such term and are used in an illustrative sense and
not a limiting sense.

 

		(f)	Statutory references. A reference to an enactment or statutory provision shall include a
reference to any subordinate legislation made under the relevant enactment or statutory provision and is a reference to that enactment,
statutory provision or subordinate legislation as from time to time amended, consolidated, modified, re-enacted or replaced.

 

		(g)	Time. Any reference to days herein is a reference to calendar days unless specifically stated
otherwise, and where the phrase “within” or “at least” is used with reference to a specific number of days
herein, the day of receipt of the relevant notice or the day of the relevant event, as the case may be, shall be excluded in determining
the relevant time period. Notwithstanding the foregoing sentence, in the event the time for submitting any notice expires on a
day that is not a Business Day, the time for submitting such notice shall be extended to the next following Business Day.

 

		(h)	Person. Reference to a “person” includes individuals, firms, partnerships, limited
liability partnerships, companies, bodies corporate, corporations, unincorporated associations, governments, authorities, agencies
and trusts (in each case, whether or not having separate legal personality), and shall include such person’s heirs and lawful
successors and assigns.

 

		(i)	Legal Term. References to any English legal term for any action, remedy, method of judicial
proceeding, legal document, legal status, Court, official or any legal concept or thing shall in respect of any jurisdiction other
than England be deemed to refer to the term which most nearly corresponds to the English legal term in that jurisdiction.

 

		1.3	Schedules

 

Attached to and forming
part of this Agreement is the following Schedules:

 

    	 	14	 

     

    

 

SCHEDULE A CONTRACT AREA

SCHEDULE B SELLER’S INTEREST

SCHEDULE C MATERIAL CONTRACTS

SCHEDULE D HYDROCARBON SALES
CONTRACTS

SCHEDULE E MANDATE AGREEMENT

SCHEDULE F EMPLOYEES

 

Such Schedule is incorporated
herein by reference as though contained in the body hereof. Wherever any term or condition of the Schedule conflicts or is at variance
with any term or condition in the body of this Agreement, such term or condition in the body of this Agreement shall prevail.

 

Article 2

ASSIGNMENT OF INTEREST

 

		2.1	Grant

 

In exchange for the
mutual covenants contained in this Agreement, including Purchaser’s covenant to pay the Purchase Price and subject to satisfaction
of the Conditions Precedent, Seller agrees to assign, transfer and convey to Purchaser the Assigned Interest, free and clear from
any Encumbrances, and Purchaser agrees to accept such assignment, transfer and conveyance of the Assigned Interest, upon the terms
and conditions contained in this Agreement. The Parties shall execute and deliver such agreements, assignments, certificates, or
documents as may be requested by Purchaser to evidence such assignment, transfer and conveyance, though the Parties agree that
no such agreements, assignments, certificates, or documents are required in order to effect such assignment, transfer and conveyance.

 

		2.2	Binding Effect

 

Seller and Purchaser
shall be bound by this Agreement as of the date hereof and shall fully perform all of their respective obligations under this Agreement.

 

		2.3	Execution of other Documents

 

As soon as practicable,
following the Closing Date the Parties shall execute the Deed of Assignment and Assumption Agreement, and the Deed of Termination
of the Sales Contract. In the event that it is necessary to amend the form of the Deed of Assignment and Assumption Agreement to
comply with Laws or Ecopetrol’s requests, the Parties shall act reasonably and in good faith to make such amendments.

 

		2.4	Ownership

 

The Parties acknowledge
and accept that, subject to satisfaction of the Conditions Precedent, as of the Closing Date the Participating Interests in the
CPI Contract shall be:

 

	Participating Interests:
	Ecopetrol	48%
	Southeast (Operator)	52% 
	Total:	100%

 

    	 	15	 

     

    

 

Said
ownership shall be registered, at Purchaser’s risk, with Ecopetrol by submitting the Ecopetrol Notice and signing the Contract
Amendment.

 

		2.5	Actions after Execution Date

 

The Seller and Purchaser,
as applicable, shall immediately and forthwith after the Execution Date file the Ecopetrol Notice and the SIC Notice, in a form
to be agreed upon by Purchaser.

 

Article 3

closing

 

		3.1	Closing Timing

 

The Closing shall occur
on the Closing Date, being the third (3rd) Business Day following the date upon which all Conditions Precedent are satisfied, or
such other date as may be mutually agreed upon by the Parties.

 

		3.2	Closing Deliverables

 

		(a)	At Closing:

 

Purchaser,
either acting directly, or through an Affiliate who shall make the payment on behalf of the Purchaser, shall deliver the Purchase
Price, to the Seller.

 

		3.3	Effects of Closing

 

		(a)	Provided Closing occurs, the Parties agree that as of the Effective Date:

 

		(i)	Purchaser shall be entitled to receive all income relating to the Assigned Interest;

 

		(ii)	Purchaser shall be considered as the beneficial owner of the Assigned Interest, and shall have
all economic rights (including the right to receive all income) arising from the Assigned Interest on and from this date as if
the Contract Amendment has already been signed. From and after the Effective Date, Seller shall hold the Assigned Interest and
all rights and benefits arising therefrom on behalf and for the sole benefit of the Purchaser. Seller shall act in good faith and
with due care and diligence in taking all reasonable actions required to secure that Purchaser receives all rights, benefits and
economic and legal attributes vested into the Purchaser as per the terms of this Agreement;

 

		(iii)	Purchaser shall be responsible for and pay all costs, expenses and liabilities applicable to the
Assigned Interest in accordance with the CPI Contract and the JOA arising or caused after the Effective Date;

 

    	 	16	 

     

    

 

		(iv)	Purchaser shall be entitled to be the Operator and conduct Operations at its sole discretion in
accordance with and under the terms of the CPI Contract and the JOA. In any case, on Closing Date Seller shall grant a mandate
agreement to Purchaser in the terms and conditions set forth in Schedule E hereto, authorizing Purchaser to conduct the Operations,
as per the terms of the JOA. In addition, Purchaser and Seller hereby agree to use their best efforts to cause the transfer of
the operatorship of the Seller under the CPI Contract vis-à-vis Ecopetrol to Purchaser as soon as reasonably practicable.
Under no circumstance, these obligations will apply to the Seller after the date of expiration of the current CPI Contract, that
is, June 2024;

 

		(v)	Seller shall not exercise any right or privilege under the CPI Contract or the JOA, including any
decision, future or pending, related to any Operation or activity pertaining to the Assigned Interest;

 

		(vi)	Seller shall have the right to all income and economic benefits arising from the Assigned Interest
incurred or caused prior to the Effective Date and Seller shall be responsible for and pay all costs, expenses and liabilities
applicable to the corresponding Assigned Interest in accordance with the CPI Contract and the JOA, as applicable, arising or caused
prior to the Effective Date.

 

		(vii)	The Purchaser shall have the obligation to keep duly and timely informed of any action or decision
of the Purchaser in connection with the CPI Agreement, in as long as the Seller maintains any obligation arising under or in connection
with the CPI Agreement.

 

		(viii)	Purchaser shall indemnify and keep the Seller harmless from and against any and all damages, costs,
losses and liabilities (including reasonable attorney’s fees and court agents) deriving from holding the Assigned Interest,
as per (i) above, or from any of the circumstances or Seller’s undertakings and/or obligations under this Section 3.3, except
where such damages, costs, losses and liabilities are a result of willful misconduct or gross negligence by Seller while holding
the Assigned Interest for the benefit of Purchaser in accordance to this section.

 

		3.4	Actions on and after Closing Date

 

		(a)	On the Closing Date, Seller shall deliver the Employment Assignments. For certainty, all costs
incurred in connection with the assignment and/or the termination of any employment contracts:

 

		(i)	included in Schedule F shall be assumed by the Purchaser

 

		(ii)	not included in Schedule F shall be assumed by the Seller;

 

For clarification
purposes, the Parties agree that given that the Purchaser shall be responsible for any costs related to or in connection with the
assignment or the termination of such employment contracts then in the event that the Employees whose employment contract is included
in the Schedule F sue or claim any liability against the Seller, the Purchaser shall, without operating to limit Seller’s
Warranties under Section 7.1(13), indemnify and keep the Seller harmless from and against any and all damages, costs, losses and
liabilities (including reasonable attorney’s fees and court agents) deriving from the execution of any of the aforementioned
disputes.

 

    	 	17	 

     

    

 

		(b)	No later than ten (10) Business Days following the Closing Date, the Parties shall perform a handover
at which time Seller shall deliver to the Purchaser all documents and records in its possession including all Books and Records
and Technical Data, whether in physical or electronic format, except as required to fulfil its obligations hereunder in which case
such documents shall be delivered as soon as possible thereafter.

 

		(c)	On or as soon as practicable following the Closing Date, the Parties shall perform a handover in
the field in order for Purchaser to assume under the Mandate Agreement all of Seller’s operations.

 

		(d)	On or in any case no later than ten (10) Business Days following the Closing Date, Seller shall
deliver the assignment and novation agreements in respect of any Material Contracts which Purchaser elects that it wishes to be
assigned. All costs incurred in connection with the termination of the Material Contracts that Purchaser does not wish to maintain
shall be assumed by the Purchaser; and

 

		(e)	Within the time periods and in accordance with the process set out in Article 3.4 of the Share
Purchase Agreement, the Parties agree to take all actions required to settle any modifications to the Purchase Price that may be
required as a result of any adjustments to be made in respect of the Estimated Working Capital for Suroriente Assigned Interest.

 

		3.5	Approvals and Waivers

 

		(a)	Each Party agrees to act in good will and good faith and to seek, and to do all things reasonably
necessary to obtain all approvals, consents and other permissions necessary to achieve the transfer and conveyance of the Assigned
Interest as specified in Section 2.1 and the vesting thereof in Purchaser on the Closing Date.

 

		(b)	Without prejudice to the generality of Section 3.5(a), following the date hereof:

 

		(i)	Purchaser shall forthwith after the Closing Date deliver to Ecopetrol, the Deed of Assignment and
Assumption Agreement;

 

		(ii)	each Party shall, forthwith upon receiving from Ecopetrol the form of Contract Amendment, sign
the said instrument and deliver to Seller for further handling, as specified in Section 3.5(b)(iii);

 

		(iii)	Seller shall, forthwith after it receives the Contract Amendment (signed by both Parties) deliver
said document to Ecopetrol; and

 

		(iv)	Seller shall, forthwith upon receiving the Ecopetrol’s counter-executed copy of the Contract
Amendment, provide to Purchaser a copy of the said document.

 

    	 	18	 

     

    

 

		(c)	Subject to any restrictions on disclosure contained in agreements with Third Parties or under Applicable
Laws, each of the Parties shall provide such documentation and information in writing which may be formally requested by Ecopetrol
in writing in respect of the Transaction.

 

		(d)	In the event that Ecopetrol rejects the assignment or requests additional information in order
to sign the Contract Amendment, Seller agrees to and shall be obliged at the Purchaser’s sole cost, to submit any and all
information and take all legal actions including execution of agreements documents as may be required by Purchaser as many times
as it is necessary to sign the Contract Amendment In any case, Seller agrees to hold the Assigned Interest in trust for the exclusive
benefit of Purchaser until the Contract Amendment as contemplated herein is signed, provided this takes place on or prior to June
2024.

 

Article 4

CONDITIONS PRECEDENT TO CLOSING

 

		4.1	Conditions to the Obligations of Purchaser

 

The obligation of Purchaser to complete
the Transaction is subject to the satisfaction (or waiver by Seller), at or prior to the Closing, of each of the following conditions:
:

 

		(a)	no Applicable Laws make illegal the consummation of the Transaction;

 

		(b)	the Regulatory Approval shall have been obtained or shall have been waived in writing by the applicable
Governmental Authority, and all conditions in respect thereof imposed by the applicable Governmental Authority that are required
to be satisfied prior to Closing shall have been satisfied; and

 

		(c)	all Relevant Agreements, except for the Asset Sale Agreement PUT-8, have been executed and closed
prior or simultaneously with the Closing of this Agreement.

 

		4.2	Conditions to the Obligations of Seller

 

The obligation of Seller to complete the
Transaction is subject to the satisfaction (or waiver by Purchaser), at or prior to the Closing, of each of the following conditions:

 

		(a)	no Applicable Laws make illegal the consummation of the Transaction;

 

		(b)	the Regulatory Approval shall have been obtained or shall have been waived in writing by the applicable
Governmental Authority, and all conditions in respect thereof imposed by the applicable Governmental Authority that are required
to be satisfied prior to Closing shall have been satisfied; and

 

		(c)	all Relevant Agreements, except for the Asset Sale Agreement PUT-8, have been executed and closed
prior or simultaneously with the Closing of this Agreement.

 

    	 	19	 

     

    

 

		4.3	Endeavors

 

Each of the Parties shall
use commercially reasonable efforts to procure that the Conditions Precedent are satisfied as soon as it is reasonably practicable
following the date hereof and in any event no later than the Closing Date.

 

Article 5.

PURCHASE PRICE AND PAYMENT

 

		5.1	Purchase Price

 

The total price payable
by the Purchaser for the assignment, conveyance and transfer of the Assigned Interest shall be US$ 46,242,059 (FORTY SIX MILLION
TWO HUNDRED AND FORTY TWO THOUSAND AND FIFTY NINE UNITED STATES DOLLARS) (the “Purchase Price”) minus the
Estimated Working Capital adjustment as provided for in Sections 3.3 of  the Shares Sale Agreement of US$ 4,890,785 (FOUR
MILLION EIGHT HUNDRED NINETY THOUSAND SEVEN HUNDRED AND EIGHTY FIVE UNITED STATES DOLLARS) less any withholding taxes required
under Colombian Law, according to section 10.1, for a total of US$ 40,317,492 (FORTY MILLION THREE HUNDRED SEVENTEEN THOUSAND FOUR
HUNDRED AND NINETY TWO UNITED STATES DOLLARS to be paid to Seller on the Closing Date.

 

In order to make the
payment of the Purchase Price, Seller shall present to Purchaser the corresponding invoice (the “Invoice”) in
compliance with the Colombian tax legislation in force, which Purchaser agrees to pay by wire transfer of immediately available
funds on the Closing Date after the correct presentation of the Invoice. Seller shall provide a draft Invoice for Purchaser to
review no less than three (3) Business Days prior to the applicable Closing Date.

 

		5.2	Payment of Purchase Price

 

The Purchase Price
shall be paid by wire transfer on the Closing Date in accordance with the instructions contained in the Invoice.

 

		5.3	Costs

 

Each Party shall bear
its own costs in connection with the negotiation of this Agreement.

 

Article 6

OBLIGATIONS OF THE PARTIES

 

		6.1	Seller’s Obligations

 

		(1)	During the Interim Period, Seller shall:

 

		(a)	not initiate any funding obligations under the CPI Contract and the JOA and all Material Contracts,
including the payment of cash calls;

 

		(b)	promptly notify Purchaser and provide details upon the occurrence of:

 

    	 	20	 

     

    

 

		(i)	any written notice of default or termination received by Seller with respect to the CPI Contract
or the JOA, or any of the Material Contracts;

 

		(ii)	any written notice received by Seller of any pending or threatened Claim related to the CPI Contract
or the JOA, or any of the Material Contracts, or in connection with any of the Employees, or under Applicable Laws and in respect
of any operations on or pertaining to the Contract Area;

 

		(iii)	any material damage, destruction or loss to any Tangible Assets;

 

		(iv)	any event or condition that would: (A) render impossible Purchaser’s right to the assignment
of the Assigned Interest under this Agreement; and/or (B) have a material adverse effect on the business, operations, financial
condition or results of operations under any of the CPI Contract or the JOA or any of the Material Contracts, or in respect of
any operations on or pertaining to the Contract Area; or

 

		(v)	any resignations, changes of status or other changes initiated by any of the Employees;

 

		(c)	regularly consult with Purchaser concerning the conduct of operations on or pertaining to the Contract
Area, including the disclosure of specifics pertaining to the planning, conduct and results of operations and data resulting therefrom;

 

		(d)	promptly provide Purchaser with any material correspondence received from the Government or a Third
Party that: (a) relates to any of the CPI Contract or the JOA, or any of the Material Contracts, or in respect of any operations
on or pertaining to the Contract Area; or (b) affects, or could reasonable be anticipated to affect, the Assigned Interest.

 

		(e)	upon receipt of reasonable advance notice, permit representatives of Purchaser to have at all reasonable
times during normal business hours and at such Party’s own risk and cost reasonable access to the operations on or pertaining
to the Contract Area, to observe the operations and inspect the Tangible Assets;

 

		(f)	not (by act or omission) breach in any material respect any of the provisions of any of the CPI
Contract or the JOA, or any of the Material Contracts, or any of the Employment Contracts, or any Applicable Laws to the extent
those relate to the Assigned Interest;

 

		(g)	not without Purchaser’s prior written approval, agree to amend or terminate the CPI Contract
or the JOA, or any of the Material Contracts, or do or omit to do anything which would amount to a waiver of any material rights
or obligations under the CPI Contract or the JOA, or any of the Employment Contracts, or any of the Material Contracts;

 

    	 	21	 

     

    

 

		(h)	not sell, pledge, charge or Encumber any part of the Assigned Interest, nor assign, sell or enter
into any agreement to assign or sell any part of the Assigned Interest;

 

		(i)	not without Purchaser’s prior written approval, exercise an election, option or any other
material right under the CPI Contract or the JOA, or any of the Material Contracts (including approval of any operations or expenditures
by the Executive Committee under the JOA);

 

		(j)	not without Purchaser’s prior written approval, approve or incur any additional commitment
or obligation to the Government in relation to the CPI Contract (including filing any revision or amendment to the work programs
and budgets filed with Ecopetrol); provided however, as expressly requested by Purchaser;

 

		(k)	ensure that Operations carried out by Seller are performed in the ordinary and usual course of
business and in accordance with the terms of the CPI Contract, the JOA, or any of the Material Contracts and Applicable Laws;

 

		(l)	be entitled to sell the Hydrocarbons produced from the CPI Contract pursuant to the Hydrocarbon
Sales Contracts, and any such other marketing or sales contracts approved by Purchaser, such approval not to be unreasonably withheld,
subject to reimbursement to the Purchaser under Section 3.3(a)(i); and

 

		(m)	not without Purchaser’s prior written approval, initiate, commence, settle, compromise or
waive any Claim relating to any of the CPI Contract, the JOA, or any of the Material Contracts, or to any Employment Contract,
or any Operation; and

 

		(2)	Following Closing and until such Contract Amendment is executed by Ecopetrol, Seller:

 

		(a)	shall comply with subparagraph (1)(b), 1(d), 1(f), 1(g), 1(h), 1(i), 1(j), 1(m); and

 

		(b)	Immediately transfer to Purchaser any and all income derived from any sale of Hydrocarbons extracted
from the Contract Area that for any reason is accrued and paid to Seller after the Effective Date at no cost for Seller.

 

		6.2	Purchaser’s Obligations

 

Purchaser shall promptly
provide to Seller all such information and documentation concerning Purchaser as may be reasonably requested to enable Seller to
prepare and submit all necessary filings in connection with the Ecopetrol Notice and the Regulatory Approvals.

 

		6.3	Mutual Obligations

 

During the Interim
Period Purchaser and Seller shall comply with each of the following undertakings:

 

    	 	22	 

     

    

 

		(a)	use commercially reasonable efforts to satisfy, in an expeditious manner, the Conditions Precedent.

 

		(b)	not take any action nor fail to take any action prior to the Closing Date that would result in
a breach of any of its representations and warranties under this Agreement.

 

Article 7

REPRESENTATIONS AND WARRANTIES OF THE PARTIES

 

		7.1	Seller’s Representations and Warranties

 

At the time of this
Agreement Seller makes the following representations and warranties to Purchaser, and shall repeat them as of the Effective Date:

 

		(1)	Rights

 

		(a)	Seller holds the rights to, and is the legal and beneficial owner of, the applicable Assigned Interest,
free and clear of any liens, Claims, burdens or Encumbrances, other than: (i) the liens, Claims, burdens or Encumbrances in favor
of the Government according to the terms of the CPI Contract and Applicable Laws, and (ii) the Credit Agreement;

 

		(b)	Seller will have the right to transfer and assign full legal and beneficial ownership of the Assigned
Interest to Purchaser, free and clear of any Preferential Right, except for what is regulated in the Credit Agreement;

 

		(c)	The CPI Contract as described herein include all amendments, extensions, renewals, relinquishments
applicable thereto;

 

		(d)	The JOA as described herein includes all amendments applicable thereto;

 

		(e)	The CPI Contract and the JOA are valid and binding agreements and are in full force and effect
and no default, termination event or breach under the CPI Contract or the JOA has occurred, nor has any notice of the foregoing
or any notice of withdrawal or revocation been received by Seller nor, to the knowledge of Seller, has any other party to the CPI
Contract and/or the JOA received or given such notice;

 

		(f)	The CPI Contract together with Applicable Laws, contain the entirety of the obligation of Seller
to the Government with respect to the subject matter of the CPI Contract, and no other understanding or agreement exists between
Seller and the Government in relation to the subject matter of the CPI Contract except as otherwise disclosed under this Agreement;

 

		(g)	To Seller’s Knowledge, the CPI Contract is not currently suspended or in Force Majeure (as
that term is defined in the CPI Contract), and , to Seller’s Knowledge, there are no circumstances currently existing which
may result in the CPI Contract becoming suspended

 

    	 	23	 

     

    

 

		(h)	Seller is in compliance with all obligations under the CPI Contract and the JOA. No default, termination
event or breach under the CPI Contract or the JOA has occurred, nor has any notice of the foregoing or any notice of withdrawal
or revocation been received by Seller nor, to the knowledge of Seller, has any other party to the CPI Contract and/or the JOA received
or given such notice.

 

		(2)	Insolvency

 

		(a)	Seller is able to pay its debts as they fall due, is not bankrupt and has not stopped paying its
debts as and when they fall due; and

 

		(b)	No order has been made and no resolution has been passed for the winding up, dissolution, administration
or similar of Seller or for a receiver, administrator, trustee in bankruptcy, liquidator or similar office howsoever called to
be appointed in respect of it or any of its assets and no petition has been presented and no meeting has been convened for the
purposes of any of the foregoing in relation to Seller.

 

		(3)	Documents

 

		(a)	Seller has provided Purchaser with complete and correct and accurate copies of the CPI Contract
and the JOA. Where Seller has provided any translation of a Document, Seller has done so as a courtesy to Purchaser and Seller
makes no representation or warranty as to the accuracy of the translation;

 

		(4)	Material Contracts and Third-Party Obligations

 

		(a)	Other than the JOA, and the Material Contracts, there are no material contracts, agreements, instruments,
transactions and undertakings pertaining to the CPI Contract, the Contract Area, the Tangible Assets or any of them nor agreements
binding on Seller in respect of the Assigned Interest and currently in effect, with the exception of the Credit Agreement;

 

		(b)	To the Seller’s Knowledge, Seller is not in a material default under any of the Material
Contracts;

 

		(c)	The JOA constitutes a legal and binding obligation of Seller, enforceable in accordance with its
respective terms, subject to limitations with respect to enforcement imposed by Applicable Laws in connection with bankruptcy,
or similar proceedings and to the extent that equitable remedies such as specific performance and injunction are in the discretion
of the courts from which they are sought;

 

		(d)	All amounts due and payable to Third Parties prior to the date hereof and pertaining to any of
the Assigned Interest have been fully paid, including (1) all rentals and royalties, (2) any and all ad valorem and property taxes,
(3) except Ecopetrol Claim any and all production, severance and similar taxes, charges and assessments based upon or measured
by the ownership or production of Hydrocarbons or any of them or the receipt of proceeds therefor, (4) any mandatory contributions
or deposits, whether in respect of abandonment and reclamation obligations or otherwise, and (5) except Ecopetrol Claim all economic
fees under the CPI Contract including subsoil use fees, Ecopetrol production participation, high prices fees and contributions
for training, institutional strengthening and technology transfer;

 

    	 	24	 

     

    

 

		(e)	There are no financial commitments of Seller in respect of the Assigned Interest which are due
as of the date of this Agreement or which may become due by virtue of matters occurring or arising prior to the date of this Agreement;

 

		(f)	Except with respect to the Ecopetrol Claim, Seller is not obligated by virtue of a prepayment,
gas balancing, take-or-pay, or other arrangement under any contract to make any production payment, refund of production payment
or delivery of Hydrocarbons produced from its interests in the Contract Area to any Third Party at some future time without receiving
in due course (and being entitled to retain) full payment therefor at current market prices or contract prices; and

 

		(g)	Seller is not aware of any ongoing, planned or threatened activities that would reasonably be anticipated
to result in the transportation infrastructure (whether being Joint Property or owned by Third Parties) currently being used to
deliver Hydrocarbons produced from the Contract Area to market not having sufficient capacity or ability to accept transmission
of the production of Hydrocarbons from the Contract Area.

 

		(5)	Claims and Litigation

 

		(a)	As of the Execution Date, except for the Ecopetrol Claim and the Ross Energy Claim, there is no
civil, criminal or administrative action, suit or proceeding pending or, to the best of Seller’s Knowledge, threatened in
writing against the Assigned Interest before any Governmental Authority;

 

		(b)	As of the date hereof, there is in connection with the Assigned Interest no material action, suit
or proceeding commenced by Seller pending before any Governmental Authority or threatened in writing by Seller against any other
Person; and

 

		(c)	To the best of Seller’s Knowledge, except as described in Schedule L (Litigation) of the
Share Sale Agreement, there is no valid basis for any civil, criminal or administrative action, suit or proceeding involving the
Assigned Interest and the Assigned Interests are not subject to any judgment, order or decree entered in any lawsuit or proceeding.

 

		(6)	Insurance

 

		(a)	The Disclosed Materials contains particulars of all insurances maintained by or on behalf of the
Seller, and all policies in respect of those insurances are currently in force. Seller has maintained valid and adequate insurance
cover of a type and affording the same degree of cover as that normally held by companies engaged in businesses of the same or
similar type to the Business for the past three years.

 

    	 	25	 

     

    

 

		(b)	Except as set forth in Schedule M of the Share Sale Agreement, there are no outstanding claims
under any policies of insurance maintained by or on behalf of the Seller.

 

		(c)	To Seller’s Knowledge, the Tangible Assets have been constructed, installed, maintained and
operated in accordance with the CPI Contract, the JOA or any other Material Contract; and to Seller’s knowledge, all Tangible
Assets are in good and operable condition, reasonable wear and tear excepted in accordance with the Seller’s past practices.

 

		(7)	Conduct of Operations

 

To Seller’s Knowledge:

 

		(a)	any and all Operations have been conducted in accordance with the terms of the CPI Contract, the
JOA, the Material Contracts, and the practice of similar companies conducting a similar business ;

 

		(b)	there have not been communicated to Seller any planned or threatened strikes, other work stoppages
or occupations by organized labour or communities living in the Contract Area’s area of direct influence which would reasonably
be expected to materially affect Operations, other than those that could arise as a consequence of the execution of this Agreement;

 

		(c)	there are no existing or, threatened through a communication to the Seller, disputes or Claims
or other grievances with ethnic communities and/or communities living in the Contract Area’s area of direct influence which
would reasonably be expected to affect access to the Contract Area for the conduct of Operations as they are currently being conducted
or are currently planned to be conducted,;

 

		(d)	any and all existing social investment obligations and Environmental handling plans (the “Obligations
and Plans”) in place with the communities living in the Contract Area’s area of direct influence for the performance
of exploration and/or production activities are not in breach of the Applicable Laws, the terms of the CPI Contract, the applicable
Material Contracts, and the terms of such Obligations and Plans; and

 

		(e)	any and all legal requirements regarding the verification and certification in relation to ethnic
groups or communities, or if applicable as the case may be, all required prior consultations have been made, and the formalities
related to them have been conducted in accordance with Applicable Laws and the terms of the CPI Contract.

 

		(8)	Environmental Matters

 

		(a)	Except as otherwise disclosed by Seller to Purchaser in the Disclosed Materials, to the best of
Seller’s Knowledge:

 

    	 	26	 

     

    

 

		(i)	there has not been and there is not now existing any material non-compliance with Environmental
Laws in respect of the construction, ownership or operation of the assets of the Seller or the conduct of any operations thereby.
For the purposes of this representation and warranty a “material non compliance” shall be such a non compliance which
may result in a material adverse change in or affecting the condition (financial, operational or legal) of the Company with an
economical impact equal to or greater than 200,000US$;

 

		(ii)	no investigation or complaint by any Governmental Authority with respect to any environmental issues
or matters or work place health and safety matters pertaining to or affecting the Seller or their respective assets or operations,
is currently outstanding;

 

		(iii)	no information request or any other requirement by any Governmental Authority with respect to any
environmental issues or matters or work place health and safety matters pertaining to or directly affecting the Seller or its assets
or operations, is currently outstanding

 

		(iv)	all known spills or similar incidents pertaining to or affecting the areas of the E&P Contract
have been reported to the appropriate Governmental Authorities to the extent required by Environmental Laws;

 

		(v)	all waste disposal pertaining to or affecting the Seller, or its respective assets or operations,
has been and is being conducted in accordance with Environmental Laws ;

 

		(vi)	there has been no Release of Hazardous Substances at or from the areas of the E&P Contracts
in connection with operations of the Seller that could reasonably be expected to give rise to a material remedial or corrective
action obligation under any Environmental Laws; and

 

		(vii)	Seller have made available to the Purchaser all material environmental studies, reports, audits,
sampling data, site assessments, compliance reviews, correspondence and other similar documents in its possession or control with
respect to the E&P Interests.

 

		(9)	Compliance with CPI Contract

 

To Seller’s Knowledge,
Seller is in compliance in all material respects with the CPI Contract, and there are no material Claims (including with respect
to Environmental Laws) of which Seller has received notice or, threatened or pending against Seller alleging any failure to so
comply.

 

		(10)	Permits

 

To the Seller’s
Knowledge the Operations are performed under the current licenses, permissions, consents, approvals and agreements (including Environmental
permits) (the Permits) have been obtained and complied with and are in full force and effect and Seller has not received
any written notice that any such Permits may be revoked, suspended or varied, in whole or in part, and to Seller’s Knowledge
there are no circumstances existing which might result in any such Permits being revoked, suspended or varied, in whole or in part.

 

    	 	27	 

     

    

 

		(11)	No Broker’s Fees

 

Seller has not incurred
any obligation or liability, contingent or otherwise, for brokerage fees, finder’s fees, agent’s commission or other
similar forms of compensation with respect to the Transaction contemplated hereunder for which Purchaser shall have any obligation
or liability whatsoever.

 

		(12)	Business Ethics and Foreign Investments

 

		(a)	Seller is in compliance with Colombian Banco de la República (Central Bank) requirements
of any and all required foreign exchange declarations and any updates to the same. Seller has no knowledge of any pending investigations
or fines with respect to such foreign investments and foreign exchange.

 

		(b)	The operations on the Assigned Interests are and have been conducted at all times in compliance
with applicable Colombian Money Laundering Laws and no action, suit or proceeding by or before any court, Governmental Authority
or arbitrator with respect to Colombian Money Laundering Laws to which Seller or its business are subject is pending, or, to the
best of Seller’s Knowledge, threatened.

 

		(c)	Neither Seller nor any of its representatives nor, to the best of Seller’s Knowledge, any
person acting in relation to the Assigned Interests: (i) has made, given or promised, either directly or indirectly, any illegal
contributions, gifts, entertainment or other unlawful expenses relating to political activity; (ii) has made, given or promised,
either directly or indirectly, any unlawful payments, gifts or benefits of any kind to any foreign or domestic governmental officials
or employees; (iii) has violated or is violating any provision of any Colombian anti-bribery or anti-corruption laws applicable
to Seller or its representatives; (iv) has established or maintained, or is maintaining, any unlawful fund of corporate monies
or other properties; or (v) has made, given or promised, either directly or indirectly any bribe, unlawful rebate, payoff, influence
payment, kickback or other unlawful payment of any gift or benefit of any nature to any foreign or domestic governmental officials
or employees for any of the following purposes: influencing any act or decision of such public official in his or her official
capacity; inducing such public official to do or omit to do any act in violation of the lawful duty of the public official; inducing
such public official to use his or her influence with any governmental agency or authority or political party to affect or influence
any act or decision of such entity; or securing any improper advantage to either assist a person to obtain business or to further
the interests of its business

 

		(d)	Seller maintains appropriate internal controls over financial reporting given Colombian Applicable
Laws to which it is subject.

 

    	 	28	 

     

    

 

		(e)	Neither Seller nor any of its representatives nor, to the best of Seller’s Knowledge, any
person acting in relation to the assets or business of Seller, is aware of or has taken any action, directly or indirectly, including,
but not limited to sales, transactions, contracts, loans or investments in, or with, in any currency, any individuals or entities
sanctioned as Specially Designated Nationals (“SDNs”) under sanctions administered by the US Office of Foreign
Asset Control (“OFAC”).

 

		(13)	Employees and Pensions

 

		(a)	Schedule F contains:

 

		(i)	written service or employment agreement or (as appropriate) any standard form of particulars of
employment applicable and issued to each of the Employees; and

 

		(ii)	particular of each Employee including but not limited to each Employee’s name, title, age,
sex and date of commencement of employment.

 

		(b)	Seller has lawfully employed the Employees in accordance with Applicable Laws;

 

		(c)	Other than as required by law, there is not in operation any pension or life assurance scheme;
and

 

		(d)	Seller is not aware of any pending or threatened Claim related to the employment agreements for
each of the Employees;

 

		7.2	Limitations of Seller’s Representations and Warranties

 

Notwithstanding any
other additional provision contained in this Agreement, Seller shall have no liability in respect of a Claim to the extent that
it occurs or is increased as a result of any of the issues, circumstances or events listed in Clause 2.3 of the Liability Acknowledgement
Agreement.

 

		7.3	Purchaser’s Representations and Warranties

 

At the time of this
Agreement Purchaser makes the following representations and warranties to Seller, and shall repeat them as of the Effective Date:

 

		(1)	General

 

		(a)	it has full power to enter into and perform this Agreement and this Agreement constitutes valid
and binding obligations on the Purchaser in accordance with its respective terms;

 

		(b)	it is entering into this Agreement on its own behalf and not on behalf of any other person;

 

		(c)	the execution and delivery of, and the performance by the Purchaser of its obligations under, this
Agreement will not:

 

    	 	29	 

     

    

 

		(i)	result in a breach of any provision of its memorandum or articles of association; or

 

		(ii)	result in a breach of any order, judgment or decree of any court or governmental agency to which
the Purchaser is a party or by which that party is bound;

 

		(d)	except for Regulatory Approval, all consents, permissions, approvals and agreements of shareholders
of the Purchaser or any other third parties which are necessary or desirable for the Purchaser to obtain in order to enter into
and perform this Agreement in accordance with its respective terms have been unconditionally obtained in writing and have been
disclosed in writing to Seller;

 

		(e)	it has the financial and economic capacity to pay in full the Purchase Price with no need to obtain
any external financing of any nature.;

 

		(f)	except for the Regulatory Approval, the execution and delivery of this Agreement by Purchaser and
the performance and consummation of the Transaction: do not and will not result in the violation of any Applicable Laws or result
in a breach of any order, judgment or decree of Governmental Authority to which the Purchaser is a party or by which the Purchaser
is bound;

 

		(g)	all consents, permissions, approvals and agreements of shareholders of the Purchaser or any other
third parties which are necessary or desirable for the Purchaser to obtain in order to enter into and perform this Agreement in
accordance with its respective terms have been unconditionally obtained in writing and have been disclosed in writing to the Seller;

 

		(h)	the Purchaser will not rescind this Agreement in the event of any breach by the Sellers of any
of the Seller’s Warranties (except with respect to a fundamental and material breach of any of Seller’s Warranties
regarding title ownership and capacity of the Seller) and any such breaches, if any, of the Seller’s Warranties will be considered
as grounds of a Claim.

 

		(2)	Financing and Insolvency

 

		(a)	Purchaser has sufficient cash, available lines of credit or other sources of immediately available
funds to enable it to fulfill all of its obligations under the CPI Contract, the JOA and this Agreement;

 

		(b)	Purchaser is able to pay its debts as they fall due, is not bankrupt and has not stopped paying
its debts as and when they fall due; and

 

		(c)	No order has been made and no resolution has been passed for the winding up, dissolution, administration
or similar of Purchaser or for a receiver, administrator, trustee in bankruptcy, liquidator or similar office howsoever called
to be appointed in respect of it or any of its assets and no petition has been presented and no meeting has been convened for the
purposes of any of the foregoing in relation to Purchaser.

 

    	 	30	 

     

    

 

		(3)	Technical Capability

 

Purchaser has the technical
capability, personnel and resources to fulfill its obligations under this Agreement.

 

		7.4	Mutual Representations and Warranties

 

Each Party makes the
following representations and warranties to the other Party as to the Party giving the representation or warranty only, which representations
and warranties are made as of the date hereof and shall be repeated as of the Closing Date:

 

		(1)	Corporate Authority

 

It is duly organized
and validly existing under the laws of the country where it is organized and is qualified to conduct business in the jurisdiction
as necessary to perform the CPI Contract. It has all requisite corporate power and authority to enter into this Agreement, to perform
its obligations hereunder, and to consummate the Transaction contemplated hereby. This Agreement has been duly executed and delivered
by such Party and constitutes a legal, valid and binding obligation of such Party, enforceable against such Party in accordance
with its terms.

 

		(2)	Other Representations and Warranties

 

The execution, delivery,
and performance of this Agreement by each Party, the consummation of the Transaction contemplated hereby, and the compliance with
the provisions hereof will not, to the best of each Party’s knowledge and belief:

 

		(a)	violate any Applicable Laws, judgment, decree or award;

 

		(b)	contravene the organization documents of a Party; or

 

		(c)	result in a violation of a term or provision, or constitute a default or accelerate the performance
of an obligation under any contract or agreement executed by a Party hereto.

 

		7.5	Disclaimer of Other Representations and Warranties

 

		(a)	Except as and to the extent expressly set forth in this Article 7, Seller expressly disclaims
any representation or warranty, express or implied, as to (i) the quantity, quality or recoverability of Hydrocarbons in or from
the Contract Area, (ii) the production of Hydrocarbons from the Assets, or whether production has been continuous or in paying
quantities, and (iii) the maintenance, repair, condition, quality, suitability, design or marketability of the Assets within
the Contract Area; and

 

		(b)	except for the representations and warranties provided in this Article 7, Seller and Purchaser
make no, and disclaim any, warranty or representation of any kind, either express, implied, statutory, or otherwise, including
in relation to the accuracy or completeness of any data, reports, statements, records, projections, information, or materials now,
heretofore, or hereafter furnished or made available to Purchaser in connection with this Agreement.

 

    	 	31	 

     

    

 

		7.6	Timing of Representations

 

All representations
and warranties given under this Article 7 shall, for the contractual term set forth herein, be deemed repeated and valid,
true and correct as of the Closing Date, and each Party agrees to inform the other Party of any material changes to the facts in
the representations and warranties prior to the Closing Date.

 

Article 8

LIABILITIES AND CLAIMS

 

		8.1	Liability Acknowledgement Agreement

 

Provisions related
to liability and Claims shall be governed by Article 2 and 3 of the Liability Acknowledgement Agreement.

 

Article 9

Settlement of Claims

 

The mechanism for the
settlement of Claims as between the Parties shall be governed by the provisions of Article 3 of the Liability Acknowledgement Agreement.

 

Article 10

TAX

 

		10.1	Tax Obligations

 

Each Party shall be
responsible for complying with its own tax obligations in accordance to the current tax legislation applicable to this Transaction.
Accordingly, Purchaser shall be entitled to withhold from the Purchase Price the Tax which is required to be withheld pursuant
to any Applicable Laws, in the amount of US$1,033,782 (ONE MILLION THIRTY THREE THOUSAND SEVEN HUNDRED EIGHTY TWO UNITED STATES
DOLLARS), which shall be enumerated in the Invoice.

 

Each Party shall protect,
defend and indemnify each other Party from any and all loss, cost or liability arising from the indemnifying Party’s failure
to satisfy such tax obligations. The Parties intend that all income and all tax benefits (including deductions, depreciation, credits
and capitalization) with respect to the expenditures made by the Parties hereunder will be allocated by the Government tax authorities
to the Parties based on the share of each tax item actually received or borne by each Party. If such allocation is not accomplished
due to the application of the Laws or other Government action, the Parties shall attempt to adopt mutually agreeable arrangements
that will allow the Parties to achieve the financial results intended.

 

The Parties shall cooperate
fully and in good faith with respect to all Tax matters connected with this Agreement and/or any transactions wherever performed.

 

		10.2	Joint Levy

 

If interpretation or
enforcement of the CPI Contract by the Government imposes joint and several liability on the Parties for any levy, charge or tax,
the Parties agree to cross indemnify each other to the extent that such levy, charge or tax is owed by one Party individually in
accordance to the tax legislation in force applicable to this Transaction.

 

    	 	32	 

     

    

 

Article 11

CONFIDENTIALITY

 

		11.1	Confidentiality

 

Except as otherwise provided in the CPI
Contract and the JOA and subject to Section 11.2, each Party shall treat as strictly confidential:

 

		(a)	the existence and provisions of this Agreement (including the Purchase Price or the allocation
thereof between Seller) and of any document or agreement entered into pursuant to this Agreement;

 

		(b)	the negotiations relating to this Agreement; and

 

		(c)	all information received or obtained as a result of entering into or performing this Agreement
which relates to any of the other parties or the business, financial or other affairs of any of the other parties.

 

		11.2	Exceptions

 

A Party may disclose
information referred to in Section 11.1 (including by way of press or public announcement or the issue of a circular) which
would otherwise be confidential if and to the extent that the disclosure is:

 

		(a)	approved by the other Parties in writing in advance;

 

		(b)	required by the law of any relevant jurisdiction or by a court of competent jurisdiction;

 

		(c)	lawfully required by any securities or investment exchange or regulatory or governmental body to
which a Party is subject;

 

		(d)	required to vest in that Party the full benefit of this Agreement;

 

		(e)	made to the professional advisers, auditors or bankers of that Party subject to the condition that
the Party making the disclosure shall procure that those persons comply with Section 11.1 as if they were Parties to this
Agreement;

 

		(f)	made to the officers or employees of that Party who need to know the information for the purposes
of the transactions effected or contemplated by this Agreement;

 

		(g)	of information that has already come into the public domain through no fault of that Party; or

 

		(h)	of information which is already lawfully in the possession of that Party as evidenced by its or
its professional advisers’ written records and which was not acquired directly or indirectly from the other Party to whom
it relates,

 

provided that any information disclosed
pursuant to paragraphs (b) and (c) shall be disclosed only, after notice to the other Parties (save where such notice is prohibited
by law) and the disclosing Party shall consult and co-operate with the other Parties regarding the content, timing and manner of
that disclosure and co-operate with any action which any of them may reasonably elect to take to challenge legally the validity
of that requirement.

 

    	 	33	 

     

    

 

		11.3	Limit in time

 

The restrictions contained
in this Article 11 shall continue to apply after the rescission or termination of this Agreement for a period of one year.

 

Article 12

Costs

 

Except to the extent
this Agreement provides otherwise, each Party shall be responsible for all the costs, charges and expenses incurred by it in connection
with and incidental to the negotiation, preparation and completion of this Agreement, the other documents referred to in this Agreement
and the assignment of the Assigned Interest under this Agreement. For the avoidance of doubt, the Purchaser shall be solely responsible
for any and all stamp duty, stamp duty reserve tax and/or other transfer taxes (and any associated interest and penalties) payable
by it in respect of the assignment of the Assigned Interest in accordance with all Applicable Laws. All taxes, withholdings and
any other charges due as a result of the assignment of the Assigned Interest will be borne by each Party according to Applicable
Laws. Seller shall be solely responsible for any charges due to its legal counsel and other advisers in connection with the assignment.

 

Article 13

Entire agreement

 

		13.1	Entire agreement

 

This Agreement (including
its exhibits and Schedules) represent the whole and only agreement between the Parties in relation to the assignment of the Assigned
Interest and supersede any previous agreement whether written or oral between the Parties in relation to that subject matter. Accordingly,
all other terms, conditions, representations, warranties and other statements which would otherwise be implied (by law or otherwise)
shall not form part of this Agreement.

 

Article 14

Continuing effect

 

		14.1	Continuing Effect

 

Each provision of this
Agreement shall continue in full force and effect after Closing, except to the extent that any provision has been fully performed
on or before Closing.

 

		14.2	Invalidity

 

If any provision of
this Agreement is determined to be illegal, invalid or unenforceable by an arbitrator or any court of competent jurisdiction, that
provision will be severed from this Agreement and the remaining provisions will remain in full force and effect.

 

    	 	34	 

     

    

 

Article 15

Amendments and waivers

 

		15.1	Amendments

 

No amendment or variation
of the terms of this Agreement or any document entered into pursuant to this Agreement (including the Schedules) shall be effective
unless it is made or confirmed in a written document signed by each Party to the relevant document.

 

		15.2	Waivers

 

No delay in exercising
or non-exercise by a Party of any right, power or remedy under this Agreement or any other document referred to in it shall impair,
or otherwise operate as a waiver or release of, that right, power or remedy.

 

Article 16

Further assurance and assistance

 

		16.1	Further assurance

 

Each Party shall from
time to time at the cost of the requesting Party, do, perform, sign, execute and deliver such reasonable and necessary acts, deeds,
documents (or procure the doing, performance, signing, execution or delivery of them) as any other Party shall from time to time
reasonably require, in a form and in terms reasonably satisfactory to that other Party to give full effect to this Agreement and
to secure to that other the full benefit of the rights, powers and remedies conferred upon it in this Agreement.

 

Article 17

Counterparts

 

		17.1	Any number of counterparts

 

This Agreement may
be executed in any number of counterparts and each such counterpart shall be deemed an original Agreement for all purposes but
all the counterparts shall together constitute one and the same instrument; provided that no Party shall be bound to this Agreement
unless and until all Parties have executed a counterpart.

 

The Parties agree that
the exchange by e-mail of scanned copies (in PDF format) of the executed Agreement or its addendum will be enough to comply with
this Section.

 

For purposes of assembling
all counterparts into one document, the Parties are authorized to detach the signature page from one or more counterparts and,
after signature thereof by the respective Party, attach each signed signature page to a counterpart.

 

Article 18

NOTICES

 

		18.1	Notices

 

Except as expressly
set forth herein, any notice or other communication from one Party to the other, which is required or permitted to be made by the
provisions of this Agreement, shall be:

 

    	 	35	 

     

    

 

		(a)	hand or sent by overnight courier to the Party concerned at the relevant address shown at the start
of this Agreement to the following addresses;

 

Seller

 

		Vetra	

 

	Address:	Avenida Calle 82 No. 10-33, Piso 7, Bogotá D.C., Colombia
	Telephone:	57 1 593 4141
	Fax:	+57 1 616 0081
	Attention:	General Manager

 

With a copy to:

 

Purchaser

 

Southeast Investment Corporation

 

	Address:	Calle 113 No. 7 – 80, Torre AR, Piso 17, Bogotá D.C., Colombia
	Fax:	+57 1 213 9327
	Attention:	Presidencia / Departamento Legal

 

With a copy to:

 

Gran
Tierra Energy Inc.

 

	Address:	900, 520 – 3rd Avenue S.W., Calgary, Alberta, Canada T2P 0R3
	Attention:	Director, Corporate Legal 
	Fax:	+1 403 265 3242

 

		(b)	e-mail to the Party concerned at the relevant email address shown below .

 

	Purchaser:	 
	 	 
	Phillip Abraham	 
	 	 
	Manuel Buitrago	 
	 	 
	Mauricio Calderón	 
	 	 
	Seller:	 
	 	 
	Luis Garcia	 
	 	 
	Javier Casais	 
	 	 
	Antonio de la Morena	 
	 	 
	Domingo Torres	 

 

    	 	36	 

     

    

 

	with a copy to	 
	 	 
	Ana Soriano	 
	 	 
	Dee Replogle	 
	 	 
	Javier Carvajal	 

 

		18.2	When notices take effect

 

Each of the communications
referred to in Section 18.1 shall take effect upon confirmed receipt.

 

Article 19

ARBITRATION

 

		19.1	Settling Disputes

 

If any dispute, claim,
question or difference arises out of or in connection with this Agreement, or in respect of any legal relationship associated with
or derived from this Agreement, other than a matter referred to in Section 19.2 (a “Dispute”), the Parties shall
attempt to settle the Dispute by negotiation. If the Dispute has not been resolved, for any reason, within fifteen (15) Business
Days following delivery of a notice of Dispute, the Dispute will be resolved by arbitration as provided in Section 19.3.

 

		19.2	Exceptions

 

Additionally, although
the arbitrator(s) also have the power to grant injunctive or other equitable relief, nothing in this Section 19.2 prevents a Party
from seeking or obtaining an injunction, specific performance or any other equitable remedy from a court of competent jurisdiction.

 

		19.3	Arbitration

 

		(1)	A Party may commence arbitration in respect of a Dispute by delivering to the other Parties
(or Party, as applicable) a written notice of arbitration.

 

		(2)	Any and all disputes or controversies arising out of or in connection with this Agreement, including
the execution, performance or termination of thereof, shall be finally settled under the Rules of Arbitration of the International
Chamber of Commerce (the “ICC Rules”), supplemented by the International Bar Association Rules on the Taking
of Evidence in International Arbitration (the “IBA Rules of Evidence”), as amended from time to time, by a three-member
arbitral tribunal. Each side shall nominate a co-arbitrator. The co-arbitrators will nominate jointly the President of the Tribunal
within thirty (30) days of the confirmation or designation of the second co-arbitrator by the International Chamber of Commerce.
The place of arbitration shall be the city of London, England, or such other locations as the Parties may agree. The arbitration
shall be conducted in English, or such other language as the Parties may agree. Judgment will be executable in any court having
jurisdiction thereof.

 

    	 	37	 

     

    

 

		(3)	The arbitration will be kept confidential and the existence of the proceeding and any element of
it (including any pleadings, briefs or other documents submitted or exchanged, any testimony or other oral submissions and any
awards) will not be disclosed beyond the arbitrator, the Parties, their counsel and any person necessary to the conduct of the
proceeding, except as may lawfully be required in judicial proceedings relating to the arbitration or otherwise or as may be required
by Applicable Law.

 

Article 20

Governing law

 

		20.1	Governing law

 

This Agreement shall be governed by and
interpreted in accordance with the laws of the Kingdom of Spain, without regard for any conflict of laws or choice of laws principles
that would require the application of the laws of any other jurisdiction, provided that the transfer of Assigned Interest shall
at all times be performed in compliance with the laws of Colombia.

 

Article 21

INDEPENDENT LEGAL ADVICE

 

Each Party hereby represents and warrants
to the others that it had the opportunity to seek and was not prevented or discouraged by any of the other Parties from seeking
independent legal advice prior to the execution and delivery of this Agreement and that, in the event that he or it did not available
himself of that opportunity prior to signing this Agreement he or it did so voluntarily without any undue pressure and agrees that
its failure to obtain independent legal advice shall not be used by it as a defence to the enforcement of its obligations under
this Agreement or as a basis for the exertion of any rights under this Agreement.

 

Article 22

Seller’s assignees

 

		22.1	With effect from the Closing Date, Inversiones Frieira, S.L.
and Vetra Energy Group LLC (jointly referred as the “Parent Companies”) shall
fully undertake any whatsoever payment obligation of either the Seller hereunder and under the Liability Ackowledgement Agreement.
Therefore from Closing Date, the Parent Companies will be liable individually and severally (“mancomunadamente”)
between both –(74.5% in the case of Inversiones Frieira, S.L. and 25.5% in the case of Vetra Energy Group LLC) of the potential
payment obligations, including all the Seller’s obligations to indemnify any Losses suffered by the Purchaser as a result
of any breach of the Sellers’ Warranties set forth in Article 7 (the “Assignment of Obligations”).

 

		22.2	Likewise, the Seller, by mean of this Agreement assigns to Parent
Companies, individually and severally (“mancomunadamente”) in the proportion of their stake in the share capital of
Seller all the rights hereunder (the “Assignment of Rights”).

 

    	 	38	 

     

    

 

		22.3	As a result of the Assignment of Obligations, the Purchaser expressly
agree to release the Seller from any such payment obligations under this Agreement and under the Liability Acknowledgement Agreement.
As previously set forth, each of the Parent Companies shall be liable vis-à-vis the Purchaser individually and severally
(“mancomunadamente”), in the proportion 74.5%/25.5% of any and all payment obligations arising from the Seller’s
obligations under this Agreement and under the Liability Acknowledgement Agreement.

 

		22.4	The Purchaser expressly accepts the terms and conditions of the
Assignment of Obligations and the Assignment of Rights and, therefore, acknowledges that on the Closing Date, once the Assignment
of Obligations and the Assignment of Rights are effective, Seller will be automatically released against the Purchaser from any
and all Losses. The Purchaser irrevocably waives any and all judicial or extra-judicial claims to be brought after the Closing
Date against the Seller related to this Agreement and under the Liability Acknowledgement Agreement.

 

Article 23

GENERAL PROVISIONS

 

		23.1	Further Assurances

 

Each of the Parties
shall do all such acts and execute and deliver all such documents as shall be reasonably required in order to fully perform and
carry out the terms of this Agreement.

 

		23.2	Non-Waiver

 

No waiver by any Party
of any one or more defaults by another Party in the performance of any provision of this Agreement shall operate or be construed
as a waiver of any future default or defaults by the same Party whether of a like or of a different character. No failure to exercise
nor any delay in exercising any right, power or remedy under this Agreement or law shall operate as a waiver, and no single or
partial exercise of any right or remedy shall prevent any further or other exercise or exercise of any other right or remedy. Except
as expressly provided in this Agreement, no Party shall be deemed to have waived, released or modified any of its right under this
Agreement unless such Party has expressly stated, in writing, that it does waive, release or modify such right.

 

		23.3	Joint Preparation

 

Each provision of this
Agreement shall be construed as though all Parties participated equally in the drafting of the same. Consequently, the Parties
acknowledge and agree that any rule of construction that a document is to be construed against the drafting party shall not be
applicable to this Agreement.

 

		23.4	Severance of Invalid Provisions

 

If and for so long
as any provision of this Agreement shall be deemed to be judged invalid for any reason whatsoever, such invalidity shall not affect
the validity or operation of any other provision of this Agreement except only so far as shall be necessary to give effect to the
construction of such invalidity, and any such invalid provision shall be deemed severed from this Agreement without affecting the
validity of the balance of this Agreement.

 

    	 	39	 

     

    

 

For the avoidance of
doubt, if and for so long as any provision of this Agreement shall be deemed to be judged invalid for any reason whatsoever, Purchaser
and Seller shall negotiate in good faith, and use reasonable endeavors, to agree an alternative valid provision which, as far as
possible, reflects the commercial terms and/or effect of the provision judged invalid.

 

		23.5	Modifications

 

There shall be no modification
or amendment of this Agreement except by written consent of all Parties.

 

		23.6	Priority of Agreement

 

In the event of any
conflict between the provisions of the main body of this Agreement and its Schedules, the provisions of the main body of the Agreement
shall prevail. In the event of any conflict between this Agreement and the CPI Contract, then as between the Parties this Agreement
shall prevail.

 

		23.7	Public Announcements

 

Notwithstanding anything
to the contrary contained in the Non-Disclosure Agreement between Gran Tierra Energy Inc. and Vetra Energía, S.L. dated
December 14, 2018 or this Agreement, the Parties acknowledge and agree that the Purchaser will be entitled to publicly announce
the execution of this Agreement and the Closing of the Transaction via press release, and, to the extent required under the rules
and regulations of the U.S. Securities Exchange Act of 1934, as amended, to file this Agreement and any financial statements required
by Rule 3-05 of Regulation S-X with the SEC. Purchaser will provide a draft copy of any such press release to Sellers, and will
make such changes which the Sellers will reasonably request.

 

		23.8	Entirety

 

With respect to the
subject matter contained herein, this Agreement (i) is the entire agreement of the Parties; and (ii) supersedes all prior understandings
and negotiations of the Parties.

 

		23.9	No Merger

 

Notwithstanding any
principle of law to the contrary, no covenant, representation, warranty, or indemnity contained herein shall be merged by reason
of the effecting of the assignment of the Assigned Interest, whether by execution of the Deed of Assignment and Assumption Agreement,
the Contract Amendment or otherwise.

 

		23.10	Partnership

 

The rights, duties,
obligations, and liabilities of the Parties under this Agreement shall be individual, not joint or collective. It is not the intention
of the Parties to create, nor shall this Agreement be deemed or construed to create, a mining or other partnership, joint venture
or association or (except as explicitly provided in this Agreement) a trust. This Agreement shall not be deemed or construed to
authorize any Party to act as an agent, servant or employee for any other Party for any purpose whatsoever except as explicitly
set forth in this Agreement. In their relations with each other under this Agreement, the Parties shall not be considered fiduciaries
except as expressly provided in this Agreement.

 

    	 	40	 

     

    

 

 

[The remainder of this
page is intentionally left blank. The counterpart execution pages of the Parties follow.]

 

    	 	41	 

     

    

 

 

IN WITNESS of
their agreement each Party has caused its duly authorized representative to sign this instrument on the date set out in the first
sentence of this Agreement

 

	 	VETRA EXPLORACIÓN y PRODUCCIÓN COLOMBIA S.A.S.
	 	 
	 	Per:	/s/ Antonio De La Morena
	 	 	Name: Antonio De La Morena
	 	 	Title:
	 	 	 
	 	Per:	/s/ Nelson Navarrete
	 	 	Name: Nelson Navarrete
	 	 	Title:
	 	 	 
	 	SOUTHEAST INVESTMENT CORPORATION
	 	 
	 	Per:	/s/ Manuel Buitrago
	 	 	Name: Manuel Buitrago
	 	 	Title: Director
	 	 	 
	 	Per:	/s/ Javier Casais
	 	 	Name: Javier Casais
	 	 	Title:
	 	 	 
	 	INVERSIONES FRIEIRA, S.L.
	 	 
	 	Per:	/s/ Manuel Jove
	 	 	Name: Manuel Jove
	 	 	Title:
	 	 	 
	 	Per:	 
	 	 	Name:
	 	 	Title:
	 	 	 
	 	VETRA ENERGY GROUP LLC
	 	 
	 	Per:	/s/ Domingo Torres
	 	 	Name: Domingo Torres
	 	 	Title:
	 	 	 
	 	Per:	 
	 	 	Name:
	 	 	Title:

 

    	 	42Exhibit

EXHIBIT 4.2

This Security is a Registered Security in permanent global form within the meaning of the Indenture hereinafter referred to and is registered in the name of the Depositary or a nominee of the Depositary.  This Security is exchangeable for Securities registered in the name of a person other than the Depositary or its nominee only in the limited circumstances described in the Indenture.  Unless and until it is exchanged in whole or in part for Securities in definitive registered form, this Security may not be transferred except as a whole by the Depositary to the nominee of the Depositary or by a nominee of the Depositary to the Depositary or another nominee of the Depositary or by the Depositary or any such nominee to a successor Depositary or a nominee of such successor Depositary.
Unless this Security is presented by an authorized representative of The Depository Trust Company (55 Water Street, New York, New York) to the issuer or its agent for registration of transfer, exchange or payment, and any Security issued is registered in the name of Cede & Co. or such other name as requested by an authorized representative of The Depository Trust Company and any payment hereon is made to Cede & Co., ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY A PERSON IS WRONGFUL since the registered owner hereof, Cede & Co., has an interest herein.

		
	No. [●]
	CUSIP No.: 101137 AV9

ISIN No.: US101137AV96

[●]
3.450% SENIOR NOTE DUE 2024

BOSTON SCIENTIFIC CORPORATION promises to pay
to Cede & Co. or registered assigns the principal sum of
[●] MILLION DOLLARS ($[●]) on
March 1, 2024.

Interest Payment Dates: March 1 and September 1 of each year, commencing September 1, 2019.

Regular Record Dates: February 15 and August 15.

Reference is hereby made to the further provisions of this Security set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place.

[SIGNATURE PAGE FOLLOWS]

IN WITNESS WHEREOF, the Company has caused this instrument to be duly executed.
Dated:  February 25, 2019
BOSTON SCIENTIFIC CORPORATION

By:                                                                        
        Name: [●]
        Title:   [●]

[corporate seal]
Attest:
By:                                                                        
        Name: [●]
        Title:   [●]

TRUSTEE’S CERTIFICATE OF AUTHENTICATION
Dated:  February 25, 2019
This is one of the Securities of the series designated therein referred to in the within-mentioned Indenture.
U.S. BANK NATIONAL ASSOCIATION,
as Trustee

By:                                                                       
Authorized Signatory

[REVERSE OF FORM OF SECURITY]
BOSTON SCIENTIFIC CORPORATION
3.450% SENIOR NOTE DUE 2024
1.Interest.  BOSTON SCIENTIFIC CORPORATION, a Delaware corporation (the “Company”), which definition shall include any successor thereto in accordance with the Indenture (as defined below), promises to pay, until the principal hereof is paid or made available for payment, interest on the principal amount set forth on the reverse side hereof at a rate of 3.450% per annum.  Interest on the Securities will accrue from and including the most recent date to which interest has been paid or, if no interest has been paid, from February 25, 2019 to but excluding the date on which interest is paid.  Interest shall be payable in arrears on March 1 and September 1 of each year (each an “Interest Payment Date”), commencing September 1, 2019.  Interest will be computed on the basis of a 360-day year of twelve 30-day months.
2.Method of Payment.  The Company will pay interest on the Securities to the Persons who are registered Holders of Securities at the close of business on the immediately preceding February 15 and August 15 of each year (each, a “Regular Record Date”).  Holders must surrender Securities to a Paying Agent to collect principal payments.  The Company will pay principal, the Redemption Price (pursuant to paragraph 5 herein), any Change of Control Payment and interest in money of the United States that at the time of payment is legal tender for payment of public and private debts.  At the Company’s option, interest may be paid by check mailed to the registered address of the Holder or by wire transfer to an account designated by the Holder of this Security; provided, however, that so long as the Securities are registered in the name of The Depository Trust Company (“DTC”), or its nominee, all payments of principal, Redemption Price (pursuant to paragraph 5 herein) and interest in respect thereof will be made by wire transfer in immediately available funds.
3.Paying Agent and Security Registrar.  Initially, U.S. Bank National Association, will act as Paying Agent and Security Registrar.  The Company may change any Paying Agent or Security Registrar without notice.
4.Indenture.  The Company issued the Securities under an Indenture, dated as of May 29, 2013 (the “Indenture”), between the Company and U.S. Bank National Association, as Trustee (the “Trustee”).  This Security is one of an issue of Securities of the Company issued under the Indenture.  The terms of the Securities include those stated herein and in the Indenture and those made part of the Indenture by reference to the Trust Indenture Act of 1939, as amended from time to time (the “TIA”).  The Securities are subject to all such terms, and Holders of the Securities are referred to the Indenture and the TIA for a statement of them.  Capitalized terms used herein and not otherwise defined have the meanings set forth in the Indenture.  The Securities constitute senior indebtedness of the Company and, as such, shall be general unsecured and unsubordinated obligations of the Company ranking equally with all of the Company’s unsecured and unsubordinated obligations.  The Company may, subject to the terms of the Indenture and applicable law, issue additional Securities under the Indenture.  The Securities issued on February 25, 2019 and any additional Securities subsequently issued shall be treated as a single class for all purposes of the Indenture.  The Indenture limits the ability of the Company to incur certain liens and to merge or consolidate with another entity or transfer all or substantially all of its property and assets.

5.Optional Redemption.  The Securities will be redeemable at any time prior to March 1, 2024, at the option of the Company, in whole or in part, on at least 15 days, but no more than 60 days prior written notice mailed to the registered holders of the Securities (with a copy to the Trustee) to be redeemed, on any date prior to maturity at a redemption price equal to the greater of (i) 100% of the principal amount of the Securities to be redeemed or (ii) as determined by a Quotation Agent, the sum of the present values of the remaining scheduled payments of principal and interest thereon to the Par Call Date (not including any portion of such payments of interest accrued to the date of redemption) discounted to the date of redemption (the “Redemption Date”) on a semi-annual basis (assuming a 360-day year consisting of twelve 30-day months) at the Adjusted Treasury Rate plus 15 basis points, plus, in each case, accrued and unpaid interest on the Securities to, but not including, the Redemption Date (subject to the right of holders as of the close of business on a regular record date to receive interest due on the related interest payment date).  At any time and from time to time on or after February 1, 2024 (the date that is 1 month prior to the maturity date of the Securities) (the “Par Call Date”), the Company may redeem the Securities, in whole or in part, at a redemption price equal to 100% of the principal amount of the Securities being redeemed plus accrued and unpaid interest to the Redemption Date.
“Adjusted Treasury Rate” means, with respect to any Redemption Date, the rate per year equal to the semi-annual equivalent yield to maturity or interpolated (on a day count basis) of the Comparable Treasury Issue, assuming a price for the Comparable Treasury Issue (expressed as a percentage of its principal amount) equal to the Comparable Treasury Price for such Redemption Date.
“Comparable Treasury Issue” means the United States Treasury security selected by a Quotation Agent as having an actual or interpolated maturity comparable to the remaining term of the Securities to be redeemed that would be utilized (assuming that the Securities matured on the Par Call Date), at the time of selection and in accordance with customary financial practice, in pricing new issues of corporate debt securities of comparable maturity to the remaining term of such Securities.
“Comparable Treasury Price” means, with respect to any Redemption Date, (1) the average of the Reference Treasury Dealer Quotations for such Redemption Date, after excluding the highest and lowest such Reference Treasury Dealer Quotations, or (2) if the Trustee obtains fewer than four such Reference Treasury Dealer Quotations, the average of all such quotations.
“Quotation Agent” means the Reference Treasury Dealer appointed by the Trustee after consultation with the Company.
“Reference Treasury Dealer” means (1) Barclays Capital Inc., Merrill Lynch, Pierce, Fenner & Smith Incorporated, Wells Fargo Securities, LLC and their respective successors; provided, however, that, if any of the foregoing shall cease to be a primary United States Government securities dealer in the United States (a “Primary Treasury Dealer”), the Company shall substitute therefor another Primary Treasury Dealer, and (2) any other Primary Treasury Dealers selected by the Trustee after consultation with the Company.
“Reference Treasury Dealer Quotations” means, with respect to each Reference Treasury Dealer and any Redemption Date, the average, as determined by the Trustee, of the bid and ask prices for the Comparable Treasury Issue (expressed in each case as a percentage of its principal amount) quoted in writing to the Trustee by such Reference Treasury Dealer at 5:00 p.m. on the third Business Day preceding such Redemption Date. 

If the Company redeems only some of the Securities, the Trustee shall determine by lot the Securities to be redeemed or, in the case of Securities held in global form, pursuant to applicable Depositary procedures.  
6.     Special Mandatory Redemption. In the event the recommended cash offer made by a wholly-owned indirect subsidiary of the Company, Bravo Bidco Limited, a private limited company incorporated under the laws of England and Wales, to acquire all of the issued and to be issued ordinary share capital of BTG plc, a public company incorporated under the laws of England and Wales, on the terms and subject to the conditions of the scheme document published on January 24, 2019 (the “BTG Acquisition”) has not become effective in accordance with its terms (“Effective”) on or prior to August 20, 2019, or such later date (if any) to which the outside date for the BTG Acquisition to become Effective has been extended in accordance with its terms (the “Long Stop Date”), or if, prior to becoming Effective, the BTG Acquisition lapses, is withdrawn or otherwise terminates in accordance with its terms, then the Company shall be required to redeem all outstanding Securities on the special mandatory redemption date (as defined below) at a special mandatory redemption price equal to 101% of the principal amount thereof, plus accrued and unpaid interest thereon (if any) to, but not including, the special mandatory redemption date (subject to the right of holders as of the close of business on a regular record date to receive interest due on the related interest payment date). The “special mandatory redemption date” means the earlier to occur of (1) the 30th day (or if such day is not a business day, the first business day thereafter) following the Long Stop Date and (2) the 30th day (or if such day is not a business day, the first business day thereafter) following the lapse, withdrawal or termination of the BTG Acquisition in accordance with its terms.
The Company shall cause notice of a special mandatory redemption to be mailed (or with respect to global Securities, to the extent permitted or required by applicable procedures or regulations of the Depositary, sent electronically), with a copy to the trustee, within ten business days after the occurrence of the event triggering redemption to each holder of Securities at its registered address. If funds sufficient to pay the special mandatory redemption price of the Securities on the special mandatory redemption date (plus accrued and unpaid interest, if any, to, but not including, the special mandatory redemption date) are deposited with the Trustee on or before such special mandatory redemption date, the Securities shall cease to bear interest on and after the special mandatory redemption date.
7.Repurchase at the Option of Holders upon Change of Control Repurchase Event. If a Change of Control Repurchase Event occurs, unless the Company has exercised its option to redeem the Securities as described under paragraph 5 above or the Company has been required to redeem the Securities as described under paragraph 6 above, each Holder of the Securities will have the right to require the Company to purchase all or a portion (equal to $2,000 and any integral multiples of $1,000 in excess thereof) of such Holder’s Securities pursuant to the offer described below (a “Change of Control Offer”) at a purchase price equal to 101% of the aggregate principal amount of such Holder’s Securities that are repurchased, plus accrued and unpaid interest, if any, to, but not including, the date of repurchase (the “Change of Control Payment”), subject to the rights of Holders of Securities on the relevant record date to receive interest due on the relevant interest payment date.
The Company will be required to send a notice to each Holder of the Securities by first class mail, with a copy to the Trustee, within 30 days following the date upon which any Change of Control Repurchase Event occurred, or at the Company’s option, prior to any Change of Control but after the public announcement of the pending Change of Control. The notice will govern the terms of the Change of Control Offer and will describe, among other things, the transaction that constitutes or may constitute the Change of Control Repurchase Event and the purchase date. The purchase date will be at least 30 days but no more than 60 days from the date such notice is mailed, other than as may be required 

by law (a “Change of Control Payment Date”). If the notice is mailed prior to the date of consummation of the Change of Control, the notice will state that the Change of Control Offer is conditioned on the Change of Control being consummated on or prior to the Change of Control Payment Date.
On the Change of Control Payment Date, the Company will, to the extent lawful:
		
	•
	accept for payment all properly tendered Securities or portions of Securities not validly withdrawn;

		
	•
	deposit with the Paying Agent the required payment for all properly tendered Securities or portions of Securities not validly withdrawn; and

		
	•
	deliver or cause to be delivered to the Trustee the repurchased Securities, accompanied by an officers’ certificate stating, among other things, the aggregate principal amount of repurchased Securities.

The Company will not be required to make a Change of Control Offer with respect to the Securities upon the occurrence of a Change of Control Repurchase Event if a third party makes such an offer in the manner, at the times and otherwise in compliance with the requirements for such an offer made by the Company and the third party purchases all Securities properly tendered and not withdrawn under its offer. In addition, the Company will not repurchase any Securities if there has occurred and is continuing on the Change of Control Payment Date an Event of Default under the Indenture.
The Corporation will comply with the requirements of Rule 14e-1 under the Exchange Act, and any other securities laws and regulations thereunder, to the extent those laws and regulations are applicable, in connection with the repurchase of Securities as a result of a Change of Control Repurchase Event. To the extent that the provisions of any such securities laws or regulations conflict with the Change of Control Offer provisions of the Securities, the Corporation will comply with those securities laws and regulations and will not be deemed to have breached its obligations under the Change of Control Offer provisions of the Securities by virtue of any such conflict.

For purposes of the foregoing discussion, the following definitions apply:
“Capital Stock” means the capital stock of every class whether now or hereafter authorized, regardless of whether such capital stock shall be limited to a fixed sum or percentage with respect to the rights of the holders thereof to participate in dividends and in the distribution of assets upon the voluntary or involuntary liquidation, dissolution or winding up of such corporation.
“Change of Control” means the occurrence of any of the following:
		
	•
	the direct or indirect sale, lease, transfer, conveyance or other disposition (other than by way of merger or consolidation), in one or more series of related transactions, of all or substantially all of the Company’s assets and the assets of the Company’s subsidiaries, taken as a whole, to any “person” (as that term is used in Section 13(d)(3) of the Exchange Act), other than the Company or one of its subsidiaries;

		
	•
	the consummation of any transaction (including, without limitation, any merger or consolidation) the result of which is that any “person” (as that term is used in Section 13(d)(3) of the Exchange Act), other than the Company or one of its subsidiaries, becomes the 

“beneficial owner” (as defined in Rule 13d-3 under the Exchange Act), directly or indirectly, of more than 50% of the Company’s then outstanding Voting Stock or other Voting Stock into which its Voting Stock is reclassified, consolidated, exchanged or changed, measured by voting power rather than number of shares; or
		
	•
	the adoption of a plan relating to the Company’s liquidation or dissolution.

Notwithstanding the foregoing, a transaction will not be considered to be a Change of Control if (a) the Company becomes a direct or indirect wholly-owned subsidiary of a holding company and (b)(x) immediately following that transaction, the direct or indirect holders of the Voting Stock of the holding company are substantially the same as the holders of the Company’s Voting Stock immediately prior to that transaction or (y) immediately following that transaction, no person is the beneficial owner, directly or indirectly, of more than 50% of the Voting Stock of such holding company.
“Change of Control Repurchase Event” means the occurrence of both a Change of Control and a Rating Event.
“Fitch” means Fitch, Inc. and its successors.
“Investment Grade” means a rating of Baa3 or better by Moody’s (or its equivalent under any successor rating categories of Moody’s), a rating of BBB- or better by S&P (or its equivalent under any successor rating categories of S&P) and a rating of BBB- or better by Fitch (or its equivalent under any successor rating categories of Fitch); provided, however, that the Company shall not be required to maintain a rating by more than two Rating Agencies at any time and if only two Rating Agencies provide a rating with respect to the Securities, then “Investment Grade” with respect to the Securities shall mean the applicable rating described above of such two Rating Agencies with respect to the Securities.
“Moody’s” means Moody’s Investors Service, Inc., a subsidiary of Moody’s Corporation, and its successors.
“Rating Agencies” means each of Moody’s, S&P and Fitch, or if any of Moody’s, S&P or Fitch ceases to rate the Securities or fails to make a rating of the Securities publicly available, any “nationally recognized statistical rating organization” within the meaning of Section 3(a)(62) under the Exchange Act that is selected by the Company as a replacement agency for Moody’s, S&P or Fitch, or each of them, as the case may be; provided, however, that the Company shall not be required to maintain a rating by more than two Rating Agencies at any time.
“Rating Event” means the rating of the Securities shall be decreased by each of the Rating Agencies independently by one or more gradations during the Rating Period (as defined below). If the rating of the Securities by each of the Rating Agencies is Investment Grade, then “Rating Event” will mean the rating of the Securities shall be decreased by one or more gradations by each Rating Agency so that the ratings of the Securities by all of of the Rating Agencies fall below Investment Grade, on any date from the date of the public notice of an arrangement that could result in a Change of Control until the end of the 30-day period following public notice of the occurrence of the Change of Control (the “Rating Period”) (which 30-day period shall be extended by no more than 60 days from the date of the occurrence of the Change of Control if the rating of the Securities is under publicly announced consideration for possible downgrade by any of the Rating Agencies and each other Rating Agency has either downgraded, or publicly announced that it is considering downgrading, the Securities). A Rating Event otherwise arising by virtue of a particular reduction in rating will not be deemed to have occurred in respect of a particular Change of Control (and thus will not be deemed a Rating Event for purposes of the definition of 

“Change of Control Repurchase Event”) if each Rating Agency making the reduction in rating to which this definition would otherwise apply does not announce or publicly confirm or inform the Trustee under the Indenture in writing at the Company’s request that the reduction was the result, in whole or in part, of any event or circumstance comprised of or arising as a result of, or in respect of, the applicable Change of Control (whether or not the applicable Change of Control has occurred at the time of the Rating Event).
“S&P” means S&P Global Ratings, a division of S&P Global Inc., and its successors.
“Voting Stock” means, with respect to any specified person as of any date, the Capital Stock of such person that is at the time entitled to vote generally in the election of the board of directors of such person.
8.Sinking Fund.  No sinking fund is provided for the Securities.
9.Denominations, Transfer, Exchange.  The Securities are in registered form without coupons in minimum denominations of $2,000 and integral multiples of $1,000 in excess thereof.  A Holder may transfer or exchange Securities in accordance with the Indenture.  No service charge shall be made for any registration of transfer or exchange of Securities, but the Company may require payment of a sum sufficient to cover any tax or other governmental charge that may be imposed in connection with any registration of transfer or exchange of Securities, other than exchanges pursuant to Section 304, 906, 1107 or 1305 of the Indenture not involving any transfer.
10.Persons Deemed Owners.  The registered Holder of a Security may be treated as the owner of it for all purposes.
11.Unclaimed Money.  Subject to any applicable abandoned property laws, if money for the payment of principal or interest remains unclaimed for two years, the Trustee or Paying Agent will pay the money back to the Company at its written request.  After that, Holders entitled to the money must look to the Company for payment as unsecured general creditors unless an “abandoned property” law designates another Person.
12.Amendment, Supplement, Waiver.  The Company and the Trustee may, without the consent of the Holders of any outstanding Securities, amend, waive or supplement the Indenture or the Securities for certain specified purposes, including, among other things, curing ambiguities, defects or inconsistencies, or making any other change that does not adversely affect the rights of any Holder in any material respect.  Other amendments and modifications of the Indenture or the Securities may be made by the Company and the Trustee with the consent of the Holders of not less than a majority of the aggregate principal amount of the outstanding Securities affected, subject to certain exceptions requiring the consent of the Holders of each Security affected thereby.
13.Successor Corporation.  When a successor corporation assumes all the obligations of its predecessor under the Securities and the Indenture and the transaction complies with the terms of Article 8 of the Indenture, the predecessor corporation, subject to certain exceptions, will be released from those obligations.
14.Defaults and Remedies.  Events of Default are set forth in the Indenture.  Subject to certain limitations in the Indenture, if an Event of Default (other than an Event of Default specified in Section 501(5) or Section 501(6) of the Indenture) occurs and is continuing, then the Holders of not less than 25% in aggregate principal amount of the Outstanding Securities may, or the Trustee may, declare the principal of, plus accrued interest, if any, to be due and payable immediately.  If an Event of Default 

specified in Section 501(5) or Section 501(6) of the Indenture occurs and is continuing, the principal of and accrued interest on all of the Securities shall ipso facto become and be immediately due and payable without any declaration or other act on the part of the Trustee or any Holder.  Holders of the Securities may not enforce the Indenture or the Securities except as provided in the Indenture.  The Trustee may require reasonable security or indemnity reasonably satisfactory to it before it enforces the Indenture or the Securities.  Subject to certain limitations, Holders of a majority in principal amount of the then Outstanding Securities may direct the Trustee in its exercise of any trust or power.  The Company must furnish an annual compliance certificate to the Trustee.
15.No Recourse Against Others.  A director, officer, employee, or stockholder, as such, of the Company or any of its Affiliates shall not have any liability for any obligations of the Company under the Securities or the Indenture or for any claim based on, in respect of or by reason of, such obligations or their creation.  Each Holder of the Securities by accepting a Security waives and releases all such liability.  The waiver and release are part of the consideration for the issue of the Securities.
16.Defeasance.  The Indenture contains provisions (which provisions apply to this Security) for defeasance at any time of (a) the entire indebtedness of the Company in respect of this Security and (b) certain restrictive covenants and Defaults and Events of Default, in each case upon compliance by the Company with certain conditions set forth therein.
17.Authentication.  This Security shall not be valid until the Trustee signs the certificate of authentication to this Security.
18.GOVERNING LAW.  THE INDENTURE AND THIS SECURITY SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK.
The Company will furnish to any Holder of Securities upon written request and without charge a copy of the Indenture.  Requests may be made to:

BOSTON SCIENTIFIC CORPORATION
300 Boston Scientific Way
Marlborough, Massachusetts 01752
Telephone:  (508) 683-4000
Telecopy:  (508) 683-4350
Attention:  General Counsel

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