Document:

EX-10.10

 Exhibit 10.10 

SECOND AMENDED & RESTATED FORWARD PURCHASE AGREEMENT 

This Amended and Restated Forward Purchase Agreement (this “Agreement”) is entered into as of September 12, 2018, between
Vista Oil & Gas, S.A.B de C.V., a Mexican public stock company of variable capital (the “Company”), and Riverstone Vista Capital Partners, L.P., an Ontario limited partnership (the “Purchaser”). 

Recitals 
 WHEREAS,
the Company was formed for the purpose of effecting a merger, capital stock exchange, asset acquisition, stock purchase, reorganization or similar business combination with one or more businesses (each a “Business Combination”);

 WHEREAS, the Company held an initial public offering (“IPO”) with the Mexican National Banking and Securities Commission
(Comisión Nacional Bancaria y de Valores, the “CNBV”) of shares of the Company’s Series A ordinary shares, with no par value, representing the variable portion of the capital stock of the Company (the
“Series A Shares,” and the Series A Shares offered in the IPO, the “Public Shares”) at a price of US $10 (or the MXN pesos equivalent), and an equal number of warrants at no additional cost, where three warrants are
together exercisable to purchase one Series A Share at an exercise price of US $11.50 (or the MXN pesos equivalent) per share (the “Warrants,” and the Warrants offered in the IPO, the “Public Warrants”). One Public
Share and one Public Warrant were offered in the IPO as a unit; 
 WHEREAS, concurrent with the IPO, the Company completed a private
placement of units comprising one Series A Share and Warrant to (i) qualified institutional buyers in reliance on Rule 144A under the U.S. Securities Act of 1933, as amended (the “Securities Act”) (the “144A
Offering”), and (ii) non-U.S. institutional and other investors outside the United States in a separate private offering in reliance on Regulation S under the Securities Act (collectively with the 144A Offering, the
“International Offering,” and both together with the IPO, the “Global Offering”); 
 WHEREAS, following
the closing of the Global Offering (the “Global Offering Closing”), the Company identified and has received shareholder approval to consummate a Business Combination; 

WHEREAS, on March 29, 2018, the parties amended and restated the Forward Purchase Agreement, dated as of July 19, 2017, and entered
into the Amended and Restated Forward Purchase Agreement (the “Prior Agreement”); 
 WHEREAS, the parties wish to amend and
restate the Prior Agreement, and enter into this Agreement, pursuant to which after the initial Business Combination (the “Initial Business Combination”) is consummated and any necessary regulatory approvals from the Comisión
Federal de Competencia Económica (“COFECE”) in connection herewith are obtained, the Company shall sell to the Purchaser, and the Purchaser shall purchase from the Company, on a private placement basis, the Forward Purchase
Shares (as defined below) and the Forward Purchase Warrants (as defined below) on the terms and conditions set forth herein; 
 WHEREAS, on
April 4, 2018 the Company consummated the Initial Business Combination 
 WHEREAS, the Purchaser’s affiliate, Vista Sponsor
Holdings, L.P. (“Sponsor Holdings”), and the management team of the Company, comprised of Miguel Galuccio, Pablo Vera Pinto, Juan Garoby and Alejandro Cherñacov (the “Management Team,” and together with
Sponsor Holdings the “Sponsor”), in the aggregate own approximately 16,118,000 shares (the “Sponsor Shares”) of the Company’s Series B common stock, which were issued for an as adjusted price of US $0.00155 per
share (the “Series B Shares”); 

 WHEREAS, the Series B Shares are to be convertible into Series A Shares on the terms and
conditions set forth in the Company’s amended and restated bylaws and the unanimous resolutions of the shareholders of the Company to be adopted approving, among other things, the terms of the Global Offering (the “Shareholders
Resolutions”); and 
 WHEREAS, in connection with the Global Offering, the Sponsor purchased warrants at an average purchase price
of US $0.50 per warrant in a private placement that will close simultaneously with the Global Offering Closing (the “Sponsor Warrants”), where three Sponsor Warrants are exercisable for one Series A Share at the price of US $11.50
(or the MXN pesos equivalent) per share. 
 NOW, THEREFORE, in consideration of the premises, representations, warranties and the mutual
covenants contained in this Agreement, and for other good and valuable consideration, the receipt, sufficiency and adequacy of which are hereby acknowledged, the parties hereto agree as follows: 

Agreement 
  

	1.	 Sale and Purchase of Forward Purchase Securities. 

(a) The Company shall sell to the Purchaser, and the Purchaser shall purchase from the Company, 5,000,000 Series A Shares (the “Forward
Purchase Shares”), plus 5,000,000 warrants (the “Forward Purchase Warrants” and, together with the Forward Purchase Shares, the “Forward Purchase Securities”) for an aggregate purchase price of US
$50,000,000 (the “Forward Purchase Price”), which is determined based on a price of US $10.00 per unit of one Forward Purchase Share and Forward Purchase Warrant (each, a “Forward Purchase Unit”). 

(b) Each Forward Purchase Warrant will have substantially the same terms as each Sponsor Warrant, and will be subject to the terms and
conditions of (i) Sections 3.02, 3.03 and 3.04 of the Strategic Partners Agreement by and between Sponsor Holdings, the Management Team and the Company, to be executed in connection with the Global Offering (the “Strategic Partners
Agreement”), (ii) the Warrant Indenture, entered into between the Company and Monex Casa de Bolsa, S.A. de C.V., as Common Representative, in connection with the Global Offering (the “Warrant Indenture”) and
(iii) the Global Certificate evidencing the Warrants and Sponsor Warrants issued pursuant to the Warrant Indenture, which will be held in deposit at S.D. Indeval Institución para el Depósito de Valores, S.A. de C.V.
(“Indeval”). Each lot of three Forward Purchase Warrants will entitle the holder thereof to purchase one Series A Share at a price of US $11.50 (or the MXN pesos equivalent) per share, subject to adjustment as described in the
Warrant Indenture, and only lots of three Forward Purchase Warrants will be exercisable. The Forward Purchase Warrants will become exercisable on the later of 30 days after the closing of the Initial Business Combination (the “Business
Combination Closing”) and 12 months from the Global Offering Closing, and will expire five years after the Business Combination Closing or earlier upon the liquidation of the Company, as described in the Warrant Indenture. The Forward
Purchase Warrants may be exercisable on a cash or cashless basis so long as they are held by the Purchaser or its Permitted Transferees (as defined below). If the Forward Purchase Warrants are held by Persons (as defined below) other than the
Purchaser or its Permitted Transferees, the Forward Purchase Warrants will have the same terms as the Public Warrants, as set forth in the Warrant Indenture. 

(c) The parties agree that after the Business Combination Closing, the parties will use reasonable efforts to obtain approval from COFECE for
the Purchaser to acquire indirectly or directly the Forward Purchase Securities hereunder, as more specifically described in the application to COFECE (“COFECE Approval”). 

  
 2 

 (d) The Company shall require the Purchaser to purchase the Forward Purchase Securities by
delivering notice of receipt of COFECE Approval and instructions for wiring the Forward Purchase Price. The closing of the sale of Forward Purchase Securities (the “Forward Closing”) shall be held twelve (12) Business Days
after delivery of such notice (such date being referred to as the “Forward Closing Date”). Subject to Section 7, on the Forward Closing Date, (i) the Purchaser shall deliver to the Company the Forward Purchase Price
for the Forward Purchase Securities by wire transfer of U.S. dollars in immediately available funds to the account specified by the Company in such notice, and (ii) the Company shall deliver the Forward Purchase Securities to the Purchaser to
the account at Indeval instructed by the Purchaser in writing. For purposes of this Agreement, “Business Day” means any day, other than a Saturday or a Sunday, that is neither a legal holiday nor a day on which banking institutions are
generally authorized or required by law or regulation to close in Mexico City, Mexico. The number of Forward Purchase Units acquired pursuant to this Agreement is referred to as the “Purchased Units,” and the amount paid for such
Purchased Units, the “Actual Forward Purchase Price.” 
 (e) Each of Purchaser’s limited partners were subject to an
administrative contribution of 2.0% of such limited partner’s respective capital commitment (the “Upfront Payment”). A cash payment in U.S. dollars equal to the amount of the Upfront Payment was previously paid by the Purchaser
in cash to the Company in consideration for the Company entering into this Agreement. Solely in the event the Initial Business Combination is consummated but less than the entire Forward Purchase Price is required to be paid by the Purchaser, the
Company will return to the Purchaser, immediately after the Forward Closing Date, an amount in U.S. dollars equal to the product of (i) the Upfront Payment multiplied by (ii) the Non-Funding Percentage (as defined below). The
“Non-Funding Percentage” equals a fraction, the numerator of which is the positive difference between US$50,000,000 and the Actual Forward Purchase Price and the denominator of which is US$50,000,000. For this purpose, the Upfront
Payment will not be taken into account as part of the aggregate purchase price for the Forward Purchase Shares and Forward Purchase Warrants or the aggregate purchase price for the Forward Purchase Securities actually sold to the Partnership, and
all such amounts will be calculated in U.S. dollars. For the sake of clarity, in the event the Initial Business Combination is not consummated, the Upfront Payment shall not be returned. 

(f) The parties agree and acknowledge that nothing in this Agreement will limit the ability of the Company to raise any other equity capital,
and the Company will have no preemptive rights to such capital. 
  

	2.	 Representations and Warranties of the Purchaser. The Purchaser represents and warrants to the Company as
follows, as of the date hereof: 

 (a) Organization and Power. The Purchaser is duly organized, validly
existing, and in good standing under the laws of the jurisdiction of its formation and has all requisite power and authority to carry on its business as presently conducted and as proposed to be conducted. 

(b) Authorization. The Purchaser has full power and authority to enter into this Agreement. This Agreement, when executed and delivered
by the Purchaser, will constitute the valid and legally binding obligation of the Purchaser, enforceable against the Purchaser in accordance with its terms, except (i) as limited by applicable bankruptcy, insolvency, reorganization, moratorium,
fraudulent conveyance and any other laws of general application affecting enforcement of creditors’ rights generally, and (ii) as limited by laws relating to the availability of specific performance, injunctive relief or other equitable
remedies. 

  
 3 

 (c) Governmental Consents and Filings. No consent, approval, order or authorization
of, or registration, qualification, designation, declaration or filing with, any federal, state or local governmental authority is required on the part of the Purchaser in connection with the consummation of the transactions contemplated by this
Agreement, other than those required for the completion of the Initial Business Combination and COFECE Approval under applicable laws. 

(d) Compliance with Other Instruments. The execution, delivery and performance by the Purchaser of this Agreement and the consummation
by the Purchaser of the transactions contemplated by this Agreement will not result in any violation or default (i) of any provisions of its organizational documents, (ii) of any instrument, judgment, order, writ or decree to which it is a
party or by which it is bound, (iii) under any note, indenture or mortgage to which it is a party or by which it is bound, (iv) under any lease, agreement, contract or purchase order to which it is a party or by which it is bound or
(v) of any provision of federal or state statute, rule or regulation applicable to the Purchaser, in each case (other than clause (i)), which would have a material adverse effect on the Purchaser or its ability to consummate the transactions
contemplated by this Agreement. 
 (e) Purchase Entirely for Account of Itself and its Limited Partners. This Agreement is made with
the Purchaser in reliance upon the Purchaser’s representation to the Company, which by the Purchaser’s execution of this Agreement, the Purchaser hereby confirms, that the Forward Purchase Securities to be acquired by the Purchaser will be
acquired for investment for the Purchaser’s own account, provided that the Purchaser may determine to distribute the Forward Purchase Securities to its limited partners and each such limited partner has affirmed to the Purchaser via
written instrument that it will receive the Forward Purchase Securities for their own respective account, not as a nominee or agent, and not with a view to the resale or distribution of any part thereof in violation of any state or federal
securities laws, and that neither the Purchaser (except as described herein) nor its limited partners have any present intention of selling, granting any participation in, or otherwise distributing the same in violation of law. By executing this
Agreement, the Purchaser further represents that, notwithstanding distributions to its limited partners, the Purchaser (except as described herein) does not presently have any contract, undertaking, agreement or arrangement with any Person to sell,
transfer or grant participations to such Person or to any third Person, with respect to any of the Forward Purchase Securities. For purposes of this Agreement, “Person” means an individual, a limited liability company, a
partnership, a joint venture, a corporation, a trust, an unincorporated organization, any other entity or any government or any department or agency thereof. 

(f) Disclosure of Information. The Purchaser has had an opportunity to discuss the Company’s business, management, financial
affairs and the terms and conditions of the offering of the Forward Purchase Securities with the Company’s management. 
 (g) No
Public Market. The Purchaser understands that no public market now exists in the United States for the Forward Purchase Securities, and that the Company has made no assurances that a public market will ever exist for the Forward Purchase
Securities. 
 (h) High Degree of Risk. The Purchaser understands that its agreement to purchase the Forward Purchase Securities
involves a high degree of risk which could cause the Purchaser to lose all or part of its investment, and that in its capacity as a holder of Forward Purchase Securities it will not participate in any vote by the Company’s shareholders as to
the approval or disapproval of the Initial Business Combination and will have no right to request reimbursements and payments as provided for in the Shareholders Resolutions. 

(i) Accredited Investor. The Purchaser is and will continue to be at the Forward Closing Date (i) an accredited investor as
defined in Rule 501(a) of Regulation D promulgated under the Securities Act, and (ii) a qualified investor (inversionista calificado) within the meaning of the Mexican Securities Market Law (Ley del Mercado de Valores) and the
regulations in effect as of the date hereof. The Purchaser acknowledges that Forward Purchase Securities are being sold in an offer that does not constitute a public offering under Mexican Securities Market Law (Ley del Mercado de Valores).

  
 4 

 (j) No General Solicitation. Neither the Purchaser, nor any of its officers,
directors, employees, agents, stockholders or partners has either directly or indirectly, including, through a broker or finder (i) engaged in any general solicitation, or (ii) published any advertisement in connection with the offer and
sale of the Forward Purchase Securities. 
 (k) Residence. The Purchaser’s principal place of business is the office or offices
located at the address of the Purchaser set forth on the signature page hereof. 
 (l) Adequacy of Financing. The Purchaser has
available to it sufficient funds to satisfy its obligations under this Agreement. 
 (m) Affiliation of Certain FINRA Members. The
Purchaser is neither a Person associated nor affiliated with Citigroup Global Markets, Inc., Credit Suisse Securities (USA) LLC, Casa de Bolsa Credit Suisse (México), S.A. de C.V., Grupo Financiero Credit Suisse (México) and Acciones y
Valores Banamex, S.A. de C.V., Casa de Bolsa, integrante del Grupo Financiero Banamex (Mexico IPO) or, to its actual knowledge, any other member of the Financial Industry Regulatory Authority (“FINRA”) or similar regulatory
authority in Mexico that is participating in the Global Offering. 
 (n) No Other Representations and Warranties; Non-Reliance.
Except for the specific representations and warranties contained in this Section 2 and in any certificate or agreement delivered pursuant hereto, none of the Purchaser nor any Person acting on behalf of the Purchaser nor any of the
Purchaser’s affiliates (the “Purchaser Parties”) has made, makes or shall be deemed to make any other express or implied representation or warranty with respect to the Purchaser and this offering, and the Purchaser Parties
disclaim any such representation or warranty. Except for the specific representations and warranties expressly made by the Company in Section 3 of this Agreement and in any certificate or agreement delivered pursuant hereto, the
Purchaser Parties specifically disclaim that they are relying upon any other representations or warranties that may have been made by the Company, any Person on behalf of the Company or any of the Company’s affiliates (collectively, the
“Company Parties”). 
 (o) No Other Fees. None of the Purchaser Parties have charged Purchaser’s limited
partners any fee in connection with this Agreement or the Global Offering, it being understood, for the avoidance of doubt, that nothing herein will limit any Upfront Payment or any payment or reimbursement of expenses in accordance with
Section 9(n). 
  

	3.	 Representations and Warranties of the Company. The Company represents and warrants to the Purchaser as
follows: 

 (a) Organization and Corporate Power. The Company is a public stock company with variable capital
organized under the laws of the United Mexican States, that is validly existing, in good standing and has all requisite corporate power and authority to carry on its business as presently conducted and as proposed to be conducted. The Company has no
subsidiaries. 
 (b) Capitalization. The authorized share capital of the Company consists of the following: 

(i) Series A Shares, of which the outstanding Series A Shares are subscribed and paid for as of the date hereof. Upon the closing of the sale
of Forward Purchase Securities hereunder, all of the issued Series A Shares will be duly authorized and issued in compliance with all applicable laws. 

  
 5 

 (ii) Series B Shares, of which the outstanding Sponsor Shares are subscribed and paid for as
of the date hereof. All of the issued Series B Shares are duly authorized, fully paid and nonassessable and issued in compliance with all applicable laws. 

(iii) Two Series C Shares, both of which are subscribed and paid for as of the date hereof. All of the issued Series C Shares are duly
authorized, fully paid and nonassessable and issued in compliance with all applicable laws. 
 (c) Authorization. All corporate
action required to be taken by the Company in order to authorize the Company to enter into this Agreement, and to deliver the Forward Purchase Securities at the Forward Closing, and the relevant Series A Shares upon exercise of the Forward Purchase
Warrants, has been taken or will be taken prior to the Forward Closing. All action on the part of the stockholders, directors and officers of the Company necessary for the execution and delivery of this Agreement, the performance of all obligations
of the Company under this Agreement to be performed as of the Forward Closing, and the delivery of the Forward Purchase Securities and the relevant Series A Shares upon exercise of the Forward Purchase Warrants has been taken or will be taken prior
to the Forward Closing. This Agreement, when executed and delivered by the Company, shall constitute the valid and legally binding obligation of the Company, enforceable against the Company in accordance with its terms except (i) as limited by
applicable bankruptcy, insolvency, reorganization, moratorium, fraudulent conveyance, or other laws of general application relating to or affecting the enforcement of creditors’ rights generally, or (ii) as limited by laws relating to the
availability of specific performance, injunctive relief, or other equitable remedies. 
 (d) Valid Securities. The Forward Purchase
Securities and the Series A Shares deliverable upon exercise of the Forward Purchase Warrants have been validly issued and, when sold and delivered in accordance with the terms and for the consideration set forth in this Agreement, will be fully
paid and nonassessable, as applicable, and free of all preemptive or similar rights, liens, encumbrances and charges with respect to the issue thereof and restrictions on transfer (other than restrictions on transfer specified under this Agreement),
applicable laws and liens or encumbrances created by or imposed by the Purchaser. The Forward Purchase Securities and the Series A Shares deliverable upon exercise of the Forward Purchase Warrants will be issued in compliance with applicable
securities laws in all material respects, including, without limitation, that such securities are sold in an offering that does not constitute a public offering under the Mexican Securities Market Law (Ley del Mercado de Valores). 

(e) Governmental Consents and Filings. Assuming the accuracy of the representations made by the Purchaser in this Agreement, no
consent, approval, order or authorization of, or registration, qualification, designation, declaration or filing with, any Mexican or U.S. federal, state or local governmental authority is required on the part of the Company in connection with the
consummation of the transactions contemplated by this Agreement, other than those required for the completion of the Initial Business Combination and COFECE Approval under applicable laws. 

(f) Compliance with Other Instruments. The execution, delivery and performance of this Agreement and the consummation of the
transactions contemplated by this Agreement will not result in any violation or default (i) of any provisions of the bylaws or other governing documents of the Company, (ii) of any instrument, judgment, order, writ or decree to which the
Company is a party or by which it is bound, (iii) under any note, indenture or mortgage to which the Company is a party or by which it is bound, (iv) under any lease, agreement, contract or purchase order to which the Company is a party or
by which it is bound or (v) of any provision of Mexican or U.S. federal or state statute, rule or regulation applicable to the Company, in each case (other than clause (i)) which would have a material adverse effect on the Company or its
ability to consummate the transactions contemplated by this Agreement. 

  
 6 

 (g) Operations. Other than to the extent non-compliance would not have a material
adverse effect on the Company or its ability to consummate the transactions contemplated by this Agreement, the Company is in compliance with the U.S. Foreign Corrupt Practices Act of 1977, as amended (to the extent applicable to the Company) and
any applicable corresponding legislation or regulation under the laws of Mexico, as well as with applicable anti-money laundering statutes of such jurisdictions, the laws and regulations thereunder and any related or similar rules, regulations or
guidelines issued, administered or enforced by any governmental agency thereunder. 
 (h) No General Solicitation. Neither the
Company, nor any of its officers, directors, employees, agents or stockholders has either directly or indirectly, including, through a broker or finder (i) engaged in any general solicitation, or (ii) published any advertisement in
connection with the offer and sale of the Forward Purchase Securities. 
 (i) Anti-Dilution Protection. Solely as it relates to the
sale of the Forward Purchase Securities, the Company agrees to cause the Sponsor to waive any anti-dilution protections of Section 4.02 of the Strategic Partners Agreement. 

(j) No Other Representations and Warranties; Non-Reliance. Except for the specific representations and warranties contained in this
Section 3 and in any certificate or agreement delivered pursuant hereto, none of the Company Parties has made, makes or shall be deemed to make any other express or implied representation or warranty with respect to the Company, this
offering, the Global Offering, or a potential Business Combination, and the Company Parties disclaim any such representation or warranty. Except for the specific representations and warranties expressly made by the Purchaser in Section 2
of this Agreement and in any certificate or agreement delivered pursuant hereto, the Company Parties specifically disclaim that they are relying upon any other representations or warranties that may have been made by the Purchaser Parties. 

 

	4.	 Transfer. This Agreement and all of the Purchaser’s rights and obligations hereunder (including the
Purchaser’s obligation to purchase the Forward Purchase Securities) may be transferred or assigned, at any time and from time to time, to one or more third parties (each such transferee, a “Transferee”). Upon any such
assignment: 

 (a) the applicable Transferee shall execute a signature page to this Agreement, substantially in the
form of the Purchaser’s signature page hereto (the “Joinder Agreement”), which shall reflect the number of Forward Purchase Shares and Forward Purchase Warrants to be purchased by such Transferee (the “Transferee
Securities”), and, upon such execution, such Transferee shall have all the same rights and obligations of the Purchaser hereunder with respect to the Transferee Securities, and references herein to the “Purchaser” shall be deemed
to refer to and include any such Transferee with respect to such Transferee and to its Transferee Securities; provided that any representations, warranties, covenants and agreements of the Purchaser and any such Transferee shall be several
and not joint and shall be made as to the Purchaser or any such Transferee, as applicable, as to itself only; and 
 (b) upon a
Transferee’s execution and delivery of a Joinder Agreement. the number of Forward Purchase Shares and Forward Purchase Warrants to be purchased by the Purchaser hereunder shall be reduced by the total number of Forward Purchase Shares and
Forward Purchase Warrants to be purchased by the applicable Transferee pursuant to the applicable Joinder Agreement, which reduction shall be evidenced by the Purchaser and the Company amending Schedule A to this Agreement to reflect each transfer
and to reflect such reduced number of Forward Purchase Securities to be purchased by the Purchaser, and upon the execution of Schedule A by the Purchaser and the Company the Purchaser shall be fully and unconditionally released from its obligation
to purchase such Transferee Securities hereunder. For the avoidance of doubt, this Agreement need not be amended and restated in its entirety, but only Schedule A need be so amended and updated and executed by each of the Purchaser and the Company
upon the occurrence of any such transfer of Transferee Securities. 

  
 7 

	5.	 Additional Agreements and Acknowledgements of the Purchaser.  

(a) Forward Purchase Warrant Lock-up; Transfer Restrictions. The Purchaser agrees that it shall not Transfer (as defined below) (or
cause the Transfer of) any Forward Purchase Warrants until at least 30 days after the completion of the Initial Business Combination. Notwithstanding the first sentence of this Section 5(a), Transfers of the Forward Purchase Warrants are
permitted (any such transferees, the “Permitted Transferees”) (i) to the Company’s officers or directors, any affiliates or family members of any of the Company’s officers or directors, any members of the Sponsor, or
any affiliates of the Sponsor; (ii) in the case of an individual, by gift to a member of the individual’s immediate family, to a trust, the beneficiary of which is a member of the individual’s immediate family or an affiliate of such
Person, or to a charitable organization; (iii) in the case of an individual, by virtue of laws of descent and distribution upon death of the individual; (iv) in the case of an individual, pursuant to a qualified domestic relations order;
(v) by private sales or transfers made in connection with the consummation of a Business Combination at prices no greater than the price at which the securities were originally purchased; (vi) in the event of the Company’s liquidation
prior to the completion of the Initial Business Combination; (vii) in the event of the Company’s liquidation, merger, capital stock exchange, reorganization or other similar transaction which results in all of the Company’s
stockholders having the right to exchange their Series A Shares for cash, securities or other property subsequent to the completion of the Initial Business Combination; (viii) as a distribution to limited partners, members or stockholders of
the Purchaser; (ix) to the Purchaser’s affiliates, to any investment fund or other entity controlled or managed by the Purchaser or any of its affiliates, or to any investment manager or investment advisor of the Purchaser or an affiliate
of any such investment manager or investment advisor; (x) to a nominee or custodian of a person or entity to whom a disposition or transfer would be permissible under clauses (i) through (ix) above; (xi) to the Purchaser or any
Transferee hereunder; (xii) by virtue of the laws of the Purchaser’s jurisdiction of formation or its organizational documents upon dissolution of the Purchaser; and (xiii) pursuant to an order of a court or regulatory agency;
provided, however, that in the case of clauses (i) through (v) and (viii) through (xii), these Permitted Transferees must enter into a written agreement agreeing to be bound by these transfer restrictions. For purposes of this
Section, “Transfer” shall mean the (x) sale or assignment of, offer to sell, contract or agreement to sell, hypothecation, pledge, grant of any option to purchase or otherwise dispose of or agreement to dispose of,
directly or indirectly, or establishment or increase of a put equivalent position or liquidation with respect to or decrease of a call equivalent position (within the meaning of Section 16 of the Exchange Act, and the rules and regulations of
the SEC promulgated thereunder) with respect to, any of the Forward Purchase Warrants (excluding any pledges in the ordinary course of business for bona fide financing purposes or as part of prime brokerage arrangements), (y) entry into any
swap or other arrangement that transfers to another, in whole or in part, any of the economic consequences of ownership of any of the Forward Purchase Warrants, whether any such transaction is to be settled by delivery of such Forward Purchase
Warrants, in cash or otherwise, or (z) public announcement of any intention to effect any transaction specified in clause (x) or (y). 

(b) Escrow Account. 
 (i)
The Purchaser hereby acknowledges that it is aware that the Company established a U.K.-based escrow account (the “Escrow Account”) for the benefit of its public shareholders upon the Global Offering Closing. The Purchaser, for
itself and its affiliates, hereby agrees that it has no right, title, interest or claim of any kind in or to any monies held in the Escrow Account, or any other asset of the Company as a result of any liquidation of the Company, except for
redemption and liquidation rights, if any, the Purchaser may have in respect of any Public Shares held by it. 

  
 8 

 (ii) The Purchaser hereby agrees that it shall have no right of set-off or any right, title,
interest or claim of any kind (“Claim”) to, or to any monies in, the Escrow Account, and hereby irrevocably waives any Claim to, or to any monies in, the Escrow Account that it may have now or in the future, except for redemption
and liquidation rights, if any, the Purchaser may have in respect of any Public Shares held by it. In the event the Purchaser has any Claim against the Company under this Agreement, the Purchaser shall pursue such Claim solely against the Company
and its assets outside the Escrow Account and not against the property or any monies in the Escrow Account, except for redemption and liquidation rights, if any, the Purchaser may have in respect of any Public Shares held by it. 

(c) No Short Sales. The Purchaser hereby agrees that neither it, nor any person or entity acting on its behalf or pursuant to any
understanding with it, will engage in any Short Sales with respect to securities of the Company prior to the Business Combination Closing. For purposes of this Section, “Short Sales” shall include, without limitation, all
“short sales” as defined in Rule 200 promulgated under Regulation SHO under the Exchange Act, and all types of direct and indirect stock pledges (other than pledges in the ordinary course of business as part of prime brokerage
arrangements), forward sale contracts, options, puts, calls, swaps and similar arrangements (including on a total return basis), and sales and other transactions through non-U.S. broker dealers or foreign regulated brokers. 

 

	6.	 Listing. The Company will use commercially reasonable efforts to effect and maintain the listing of the
Series A Shares and Public Warrants on Bolsa Mexicana de Valores S.A.B. de C.V., the Mexican stock exchange. 

  

	7.	 Forward Closing Conditions. 

(a) The obligation of the Purchaser to purchase the Forward Purchase Securities at the Forward Closing under this Agreement shall be subject to
the fulfillment, at or prior to the Forward Closing of each of the following conditions, any of which, to the extent permitted by applicable laws, may be waived by the Purchaser: 

(i) The Business Combination Closing shall have occurred; 

(ii) The COFECE Approval shall have been obtained; 

(iii) The representations and warranties of the Company set forth in Section 3 of this Agreement shall have been true and correct
as of the date hereof and shall be true and correct as of the Forward Closing Date, as applicable, with the same effect as though such representations and warranties had been made on and as of such date (other than any such representation or
warranty that is made by its terms as of a specified date, which shall be true and correct as of such specified date), except where the failure to be so true and correct would not have a material adverse effect on the Company or its ability to
consummate the transactions contemplated by this Agreement; 
 (iv) The Company shall have performed, satisfied and complied in all material
respects with the covenants, agreements and conditions required by this Agreement to be performed, satisfied or complied with by the Company at or prior to the Forward Closing; and 

(v) No order, writ, judgment, injunction, decree, determination, or award shall have been entered by or with any governmental, regulatory, or
administrative authority or any court, tribunal, or judicial, or arbitral body, and no other legal restraint or prohibition shall be in effect, preventing the purchase by the Purchaser of the Forward Purchase Securities. 

  
 9 

 (b) The obligation of the Company to sell the Forward Purchase Securities at the Forward
Closing under this Agreement shall be subject to the fulfillment, at or prior to the Forward Closing of each of the following conditions, any of which, to the extent permitted by applicable laws, may be waived by the Company: 

(i) The Business Combination Closing shall have occurred; 

(ii) The COFECE Approval shall have been obtained; 

(iii) The representations and warranties of the Purchaser set forth in Section 2 of this Agreement shall have been true and
correct as of the date hereof and shall be true and correct as of the Forward Closing Date, as applicable, with the same effect as though such representations and warranties had been made on and as of such date (other than any such representation or
warranty that is made by its terms as of a specified date, which shall be true and correct as of such specified date), except where the failure to be so true and correct would not have a material adverse effect on the Purchaser or its ability to
consummate the transactions contemplated by this Agreement; 
 (iv) The Purchaser shall have performed, satisfied and complied in all
material respects with the covenants, agreements and conditions required by this Agreement to be performed, satisfied or complied with by the Purchaser at or prior to the Forward Closing; and 

(v) No order, writ, judgment, injunction, decree, determination, or award shall have been entered by or with any governmental, regulatory, or
administrative authority or any court, tribunal, or judicial, or arbitral body, and no other legal restraint or prohibition shall be in effect, preventing the purchase by the Purchaser of the Forward Purchase Securities. 

 

	8.	 Termination. This Agreement may be terminated at any time prior to the Forward Closing:

 (a) by mutual written consent of the Company and the Purchaser; 

(b) automatically 

(i) if the COFECE Approval is not obtained by June 30, 2019; or 

(ii) if Sponsor Holdings or the Company becomes subject to any voluntary or involuntary petition under the United States federal, Mexican or
Canadian bankruptcy laws or any state insolvency law, in each case which is not withdrawn within sixty (60) days after being filed, or a receiver, fiscal agent or similar officer is appointed by a court for business or property of Sponsor
Holdings or the Company, in each case which is not removed, withdrawn or terminated within sixty (60) days after such appointment. 

In the event of any termination of this Agreement pursuant to this Section 8, the Forward Purchase Price (and interest thereon, if
any), if previously paid, shall be promptly returned to the Purchaser, and thereafter this Agreement shall forthwith become null and void and have no effect, without any liability on the part of the Purchaser or the Company and their respective
directors, officers, employees, partners, managers, members, or stockholders and all rights and obligations of each party shall cease; provided, however, that nothing contained in this Section 8 shall (1) relieve either party
from liabilities or damages arising out of any fraud or willful breach by such party of any of its representations, warranties, covenants or agreements contained in this Agreement or (2) entitle the Purchaser to a return of the Upfront Payment
except solely in the event an Initial Business Combination is consummated, then as provided in Section 1(e). 

  
 10 

	9.	 General Provisions. 

(a) Notices. All notices and other communications given or made pursuant to this Agreement shall be in writing and shall be deemed
effectively given upon the earlier of actual receipt, or (a) personal delivery to the party to be notified, (b) when sent, if sent by electronic mail or facsimile (if any) during normal business hours of the recipient, and if not sent
during normal business hours, then on the recipient’s next Business Day and (c) two (2) Business Day after deposit with a nationally recognized overnight international courier, freight prepaid, specifying next Business Day delivery,
with written verification of receipt. All communications sent to the Company shall be sent to: Vista Oil & Gas, S.A.B. de C.V., Javier Barros Sierra 540 Torre 2, Piso 2, Col. Lomas de Santa Fe, Mexico City, Mexico, 01210, Attention: Javier
S. Rodriguez Galli with a copy to the Company’s counsel at Creel, García-Cuéllar, Aiza Y Enriquez, S.C., Paseo de Los Tamarindos 60, Bosques de las Lomas, 05120 Ciudad de México, CDMX, Mexico, Attention: Carlos Zamarron.

 All communications to the Purchaser shall be sent to the Purchaser’s address as set forth on the signature page hereof, or to such
e-mail address, facsimile number (if any) or address as subsequently modified by written notice given in accordance with this Section 9(a). 

(b) No Finder’s Fees. Each party represents that it neither is nor will be obligated for any finder’s fee or commission in
connection with this transaction. The Purchaser agrees to indemnify and to hold harmless the Company from any liability for any commission or compensation in the nature of a finder’s or broker’s fee arising out of this transaction (and the
costs and expenses of defending against such liability or asserted liability) for which the Purchaser or any of its officers, employees or representatives is responsible. The Company agrees to indemnify and hold harmless the Purchaser from any
liability for any commission or compensation in the nature of a finder’s or broker’s fee arising out of this transaction (and the costs and expenses of defending against such liability or asserted liability) for which the Company or any of
its officers, employees or representatives is responsible. 
 (c) Survival of Representations and Warranties. All of the
representations and warranties contained herein shall survive the Forward Closing. 
 (d) Entire Agreement. This Agreement, together
with any documents, instruments and writings that are delivered pursuant hereto or referenced herein, constitute the entire agreement and understanding of the parties hereto in respect of its subject matter and supersedes all prior understandings,
agreements, or representations by or among the parties hereto, written or oral, to the extent they relate in any way to the subject matter hereof or the transactions contemplated hereby. 

(e) Successors. All of the terms, agreements, covenants, representations, warranties, and conditions of this Agreement are binding
upon, and inure to the benefit of and are enforceable by, the parties hereto and their respective successors. Nothing in this Agreement, express or implied, is intended to confer upon any party other than the parties hereto or their respective
successors and assigns any rights, remedies, obligations or liabilities under or by reason of this Agreement, except as expressly provided in this Agreement. 

(f) Assignments. Except as otherwise specifically provided herein, no party hereto may assign either this Agreement or any of its
rights, interests, or obligations hereunder without the prior written approval of the other party. 
 (g) Counterparts. This
Agreement may be executed by facsimile or electronic mail in portable document format (PDF) and in one or more counterparts, all of which will constitute one and the same instrument. 

  
 11 

 (h) Headings. The section headings contained in this Agreement are inserted for
convenience only and will not affect in any way the meaning or interpretation of this Agreement. 
 (i) Governing Law. This
Agreement, the entire relationship of the parties hereto, and any litigation between the parties (whether grounded in contract, tort, statute, law or equity) shall be governed by, construed in accordance with, and interpreted pursuant to the laws of
the State of New York, without giving effect to its choice of laws principles. 
 (j) Jurisdiction. The parties (i) hereby
irrevocably and unconditionally submit to the jurisdiction of the state courts of New York and to the jurisdiction of the United States District Court for the Southern District of New York for the purpose of any suit, action or other proceeding
arising out of or based upon this Agreement, (ii) agree not to commence any suit, action or other proceeding arising out of or based upon this Agreement except in state courts of New York or the United States District Court for the Southern
District of New York, and (iii) hereby waive, and agree not to assert, by way of motion, as a defense, or otherwise, in any such suit, action or proceeding, any claim that it is not subject personally to the jurisdiction of the above-named
courts, that its property is exempt or immune from attachment or execution, that the suit, action or proceeding is brought in an inconvenient forum, that the venue of the suit, action or proceeding is improper or that this Agreement or the subject
matter hereof may not be enforced in or by such court. 
 (k) Waiver of Jury Trial. The parties hereto hereby waive any right to a
jury trial in connection with any litigation pursuant to this Agreement and the transactions contemplated hereby. 
 (l) Amendments.
This Agreement may not be amended, modified or waived as to any particular provision, except with the prior written consent of the Company and the Purchaser. 

(m) Severability. The provisions of this Agreement will be deemed severable and the invalidity or unenforceability of any provision
will not affect the validity or enforceability of the other provisions hereof; provided that if any provision of this Agreement, as applied to any party hereto or to any circumstance, is adjudged by a governmental authority, arbitrator, or
mediator not to be enforceable in accordance with its terms, the parties hereto agree that the governmental authority, arbitrator, or mediator making such determination will have the power to modify the provision in a manner consistent with its
objectives such that it is enforceable, and/or to delete specific words or phrases, and in its reduced form, such provision will then be enforceable and will be enforced. 

(n) Expenses. All costs and expenses incurred in connection with the preparation, execution and performance of this Agreement and the
consummation of the transactions contemplated hereby, including all fees and expenses of agents, representatives, financial advisors, legal counsel and accountants, shall be borne by the Purchaser. The Purchaser shall be responsible for the fees of
the Company’s transfer agent; stamp taxes and any other fees associated with the issuance of the Forward Purchase Securities and the securities issuable upon exercise of the Forward Purchase Warrants. 

(o) Construction. The parties hereto have participated jointly in the negotiation and drafting of this Agreement. If an ambiguity or
question of intent or interpretation arises, this Agreement will be construed as if drafted jointly by the parties hereto and no presumption or burden of proof will arise favoring or disfavoring any party hereto because of the authorship of any
provision of this Agreement. Any reference to any federal, state, local, or foreign law will be deemed also to refer to law as amended and all rules and regulations promulgated thereunder, unless the context requires otherwise. The words
“include,” “includes,” and “including” will be deemed to be followed by “without limitation.” Pronouns in masculine, feminine, and neuter genders will be construed to include any
other gender, and words in the singular form will be construed to include the plural and vice versa, unless the context otherwise requires. The words 

  
 12 

 
“this Agreement,” “herein,” “hereof,” “hereby,” “hereunder,” and words of similar import refer to this
Agreement as a whole and not to any particular subdivision unless expressly so limited. The parties hereto intend that each representation, warranty, and covenant contained herein will have independent significance. If any party hereto has breached
any representation, warranty, or covenant contained herein in any respect, the fact that there exists another representation, warranty or covenant relating to the same subject matter (regardless of the relative levels of specificity) which such
party hereto has not breached will not detract from or mitigate the fact that such party hereto is in breach of the first representation, warranty, or covenant. 

(p) Waiver. No waiver by any party hereto of any default, misrepresentation, or breach of warranty or covenant hereunder, whether
intentional or not, may be deemed to extend to any prior or subsequent default, misrepresentation, or breach of warranty or covenant hereunder or affect in any way any rights arising because of any prior or subsequent occurrence. 

(q) Specific Performance. The Purchaser agrees that irreparable damage may occur in the event any provision of this Agreement was not
performed by the Purchaser in accordance with the terms hereof and that the Company shall be entitled to specific performance of the terms hereof, in addition to any other remedy at law or equity. 

[Signature page follows] 

  
 13 

 IN WITNESS WHEREOF, the undersigned have executed this Agreement to be effective as
of the date first set forth above. 
 PURCHASER: 

RIVERSTONE VISTA CAPITAL PARTNERS, L.P. 

			
		
	By:	 	RVCP GP, L.L.C.
		
	 By:
	 	 /s/ Peter Haskopoulos
  

		 	Name: Peter Haskopoulos
		 	Title: Managing Director

  

					
	Address for Notices: 712 Fifth Ave, 19th Floor                       
	
	 New York, New York 10019

	
	E-mail: phaskopoulos@riverstonelle.com
	
	 Fax: (212) 271-2938

			
	
	COMPANY:
	
	VISTA OIL & GAS, S.A.B. DE C.V.
		
	By:	 	 /s/ Alejandro Cherñacov
  

		 	Name: Alejandro Cherñacov
		 	Title: Attorney-in-Fact

 [Signature Page to Amended & Restated Forward Purchase Agreement] 

 TO BE EXECUTED UPON ANY ASSIGNMENT AND/OR REVISION IN ACCORDANCE WITH THIS AGREEMENT TO “NUMBER OF
FORWARD PURCHASE SHARES,” “NUMBER OF FORWARD PURCHASE WARRANTS” AND “AGGREGATE PURCHASE PRICE FOR FORWARD PURCHASE SECURITIES” SET FORTH ABOVE: 

Number of Forward Purchase Shares, Number of Forward Purchase Warrants and Aggregate Purchase Price for Forward Purchase Securities as of
                    , 201[    ], accepted and agreed to as of this         day of
                    , 201[    ]. 
  

			
	RIVERSTONE VISTA CAPITAL PARTNERS, L.P.
	
	By: RVCP GP, L.L.C.
		
	By:	 	 
		 	Name: Peter Haskopoulos
		 	Title: Managing Director
	
	VISTA OIL & GAS, S.A.B. DE C.V.
		
	By:	 	 
		 	Name:
		 	Title:

 SCHEDULE A 

SCHEDULE OF TRANSFERS OF FORWARD PURCHASE SECURITIES 

The following transfers of a portion of the original number of Forward Purchase Shares and Forward Purchase Warrants have been made: 

 

																	
	 Date of Transfer
	  	 Transferee
	  	 Number of

Forward
 Purchase

Shares 

Transferred
	  	Number of
Forward
Purchase
Warrants
Transferred	 	  	Purchaser
Revised
Forward
Purchase
Share
Amount	 	  	Purchaser
Revised
Forward
Purchase
Warrant
Amount	 
		  		  		  				  				  			
		  		  		  				  				  			
		  		  		  				  				  			
		  		  		  				  				  			
		  		  		  				  				  			

 TO BE EXECUTED UPON ANY ASSIGNMENT OR FINAL DETERMINATION OF FORWARD PURCHASE SECURITIES: 

Schedule A as of             , 201[    ], accepted and agreed to as of this
            day of             , 201[    ] by: 

 

							
	 RIVERSTONE VISTA CAPITAL PARTNERS, L.P.
	 	VISTA OIL & GAS, S.A.B. DE C.V.
		
	 By: RVCP GP, L.L.C.
	 	
				
	 By:
	 	  
	 	By:  	 	  

		 	Name:	 		 	Name:
		 	Title:	 		 	Title:EX-10.11

 Exhibit 10.11 

June 10, 2019 
 Banco de Galicia y Buenos
Aires S.A., 
 Itaú Unibanco S.A., Nassau Branch, 
 Banco
Santander Río, S.A., and 
 Citibank, N.A. 
 as Lenders

 Itaú Unibanco S.A., Nassau Branch, as Administrative Agent 

Re: Offer No. 2/2019  
 Ladies and
Gentlemen, 
 VISTA OIL & GAS ARGENTINA S.A., a sociedad anónima organized and existing under the laws of the
Republic of Argentina (the “Borrower”), VISTA OIL & GAS, S.A.B. DE C.V., a sociedad anónima bursátil de capital variable organized under the laws of Mexico (“Vista”), VISTA
OIL & GAS HOLDING I, S.A. DE C.V., a sociedad anónima de capital variable organized and existing under the laws of Mexico (“Vista Holding I”), APCO ARGENTINA S.A., a sociedad
anónima organized and existing under the laws of the Republic of Argentina (“APCO Argentina”), APCO OIL & GAS S.A.U., a sociedad anónima unipersonal organized under the laws of the
Republic of Argentina (as successor to APCO Oil and Gas International, Inc., “APCO”), and VISTA HOLDING II, S.A. DE C.V., a sociedad anónima de capital variable organized under the laws of Mexico (“Vista
Holding II”), hereby irrevocably offer BANCO DE GALICIA Y BUENOS AIRES S.A., ITAÚ UNIBANCO S.A., NASSAU BRANCH (“Banco Itaú”), BANCO SANTANDER RIO S.A. and CITIBANK, N.A. (the
“Lenders”) and Banco Itaú, as administrative agent (the “Administrative Agent”), to enter into a waiver agreement in the form attached hereto as Annex I (including Schedule I thereto) (this
“Offer No. 2/2019” and once accepted pursuant to the terms hereof, the “Agreement”). 

This Offer No. 2/2019 shall be open for acceptance in writing by the Lenders and the Administrative Agent until June 10, 2019,
unless extended in writing for an additional period of time by the Borrower (the “Expiration Date”); forthwith after the Expiration Date, this Offer shall automatically lose all force and effect. 

Upon written acceptance of this Offer No. 2/2019 on or before the Expiration Date by all of the addressees hereto, the Agreement shall
become in full force and effect subject to the terms and conditions set forth in Annex I (including, without limitation, the conditions precedent set forth in Section 3 thereof) as if the parties hereof had executed and delivered the same and
shall be legally binding upon, and enforceable against, each and all of the parties, and each and all of them shall become parties to the Agreement. The Agreement shall be deemed entered into as of the date of the latest acceptance among of the
Lenders and Administrative Agent. 

 This Offer No. 2/2019 shall be governed by, and interpreted in accordance with, the law
of the State of New York (without regard to conflicts of law principles other than sections 5-1401 and 5-1402 of the New York general obligations law). 

We hereby agree that the delivery of the acceptance notice and service of all notices, writs, process and summons in any suit, action or
proceeding brought in connection with this Offer No. 2/2019 may be made upon us by service to the address, and in the manner, set forth in Section 11.1 of the Credit Agreement (as defined below).     

[Remainder of page intentionally left blank.] 

  
 2 

 
			
	Sincerely,
	
	VISTA OIL & GAS ARGENTINA S.A.
		
	By:	 	 /s/ Alejandro Cherñacov

	Name:	 	Alejandro Cherñacov
	Title:	 	Attorney-in-Fact
	
	VISTA OIL & GAS S.A.B. DE C.V.
		
	By:	 	 /s/ Alejandro Cherñacov

	Name:	 	Alejandro Cherñacov
	Title:	 	Attorney-in-Fact
	
	VISTA OIL & GAS HOLDING I, S.A. DE C.V.
		
	By:	 	 /s/ Alejandro Cherñacov

	Name:	 	Alejandro Cherñacov
	Title:	 	Attorney-in-Fact
	
	APCO ARGENTINA S.A.
		
	By:	 	 /s/ Alejandro Cherñacov

	Name:	 	Alejandro Cherñacov
	Title:	 	Attorney-in-Fact
	
	APCO OIL & GAS S.A.U.
		
	By:	 	 /s/ Alejandro Cherñacov

	Name:	 	Alejandro Cherñacov
	Title:	 	Attorney-in-Fact
	
	VISTA HOLDING II, S.A. DE C.V.
		
	By:	 	 /s/ Alejandro Cherñacov

	Name:	 	Alejandro Cherñacov
	Title:	 	Attorney-in-Fact

 [Signature page to Amendment No. 1 to the Credit Agreemen (Vista)] 

  
 3 

 ANNEX I 

TERMS AND CONDITIONS TO 

THE OFFER NO. 2/2019 

(see attached) 

  
 4 

 AMENDMENT NO. 1 TO THE CREDIT AGREEMENT 

This Annex I shall, once accepted by BANCO DE GALICIA Y BUENOS AIRES S.A., ITAÚ UNIBANCO S.A., NASSAU BRANCH (“Banco
Itaú”), BANCO SANTANDER RIO S.A. and CITIBANK, N.A. (collectively, the “Lenders”) and Banco Itaú, as administrative agent (the “Administrative Agent” and
together with the Lenders, the “Offerees”) in accordance with the terms of the offer letter (the “Offer No. 2/2019”) of which this Annex I forms a part, shall constitute the AMENDMENT NO. 1
TO THE CREDIT AGREEMENT (this “Amendment No. 1”), dated as of the date on which the Offerees shall have accepted the Offer No. 2/209 in accordance with the terms thereof, entered into by and among
VISTA OIL & GAS ARGENTINA S.A., a sociedad anónima organized and existing under the laws of the Republic of Argentina (the “Borrower”), VISTA OIL & GAS, S.A.B. DE C.V., a sociedad anónima
bursátil de capital variable organized under the laws of Mexico (“Vista”), VISTA OIL & GAS HOLDING I, S.A. DE C.V., a sociedad anónima de capital variable organized and existing under the laws of
Mexico (“Vista Holding I”), APCO ARGENTINA S.A., a sociedad anónima organized and existing under the laws of the Republic of Argentina (“APCO Argentina”), APCO OIL & GAS
S.A.U., a sociedad anónima unipersonal organized under the laws of the Republic of Argentina (as successor to APCO Oil and Gas International, Inc., “APCO”), and VISTA HOLDING II, S.A. DE C.V., a sociedad
anónima de capital variable organized under the laws of Mexico (“Vista Holding II”), as signatories to the Offer No. 2/2019, and the Lenders and the Administrative Agent signatory to that certain letter
of acceptance in respect of the Offer No. 2/2019. Upon delivery of the acceptance letter in accordance with the terms of the Offer No. 2/2019, each of the aforementioned parties shall be deemed to be a party hereto. 

PRELIMINARY STATEMENTS 

A. Reference is made to that certain credit agreement evidenced by Offer VISTA OIL & GAS ARGENTINA S.A. No. 1/2018 dated as of
July 19, 2018, executed and delivered by the Borrower, Vista, Vista Holding I, APCO Argentina and APCO and accepted by the Lenders and the Administrative Agent on the same date (as amended, supplemented, amended and restated or otherwise
modified from time to time through the date hereof, the “Credit Agreement”), pursuant to which the Lenders have extended credit to the Borrower. 

B. The Borrower has requested that the Required Lenders agree to amend certain provisions of the Credit Agreement with respect to Unrestricted
Proceeds. 
 C. NOW, THEREFORE, in consideration of the premises and agreements, provisions and covenants herein contained,
the parties hereto agree as follows: 
 SECTION 1. Definitions. Capitalized terms not otherwise defined in this
Amendment No. 1 shall have the same meanings specified in the Credit Agreement. 

  
 5 

 SECTION 2. Amendment. In accordance with
Section 12.9(a) of the Credit Agreement, and subject to satisfaction of the conditions precedent to effectiveness set forth in Section 3 below, the Administrative Agent and each Lender party hereto hereby consents and agrees to
amend the Credit Agreement as follows: 
 (a) The definition of “Unrestricted Proceeds” in Section 1.1 of the Credit
Agreement is amended and restated in its entirety to read as follows: 
 ““Unrestricted Proceeds” shall mean,
as of any date of determination, (i) the sum of (A) Unrestricted Equity Proceeds for which the Administrative Agent has received a certificate pursuant to Section 7.1(f)(i) and
(B) the Annual Permitted Net Income Restricted Payment Amount (less the amount of any Restricted Payments made by Vista in accordance with Section 8.6(a)(iii)), minus (ii) the sum of
any (A) Investments made after the Effective Date by any Loan Party or Restricted Subsidiary in any Person other than a Loan Party or Restricted Subsidiary pursuant to Section 8.4(c) and
(B) repayments made after the Effective Date by any Loan Party or any Restricted Subsidiary to any Person other than any Loan Party or any Restricted Subsidiary of any Deeply Subordinated Indebtedness pursuant to
Section 8.6(c).” 
 (b) Clause (f) of Section 7.1 of the Credit Agreement is amended and restated in
its entirety to read as follows: 
 “(f) Unrestricted Proceeds Officer’s Certificate.  

(i) At least five (5) Business Days prior to the proposed date of receipt of any Unrestricted Equity Proceeds, an officer’s
certificate signed by an Authorized Officer of the Borrower, which certificate shall state the amount of Unrestricted Equity Proceeds to be received by a Loan Party or Restricted Subsidiary; 

(ii) Not later than fifteen (15) Business Days after the date of any Investment or any repayment, in each case, of the type described
in clause (ii) of the definition of “Unrestricted Proceeds”, the Borrower shall deliver or cause to be delivered to the Administrative Agent a certificate that shall (A) certify as to the identity of the entity that has made a
use of Unrestricted Proceeds, (B) certify as to the amount of Unrestricted Proceeds available immediately before giving effect to such use of Unrestricted Proceeds, (C) certify as to the amount of Unrestricted Proceeds available
immediately after giving effect to such use of Unrestricted Proceeds, (D) certify as to the amount of Unrestricted Proceeds so used or to be used, (E) certify as to the use that such entity has made or proposes to make using the
Unrestricted Proceeds and (F) specify the relevant provision of this Agreement under which such use is permitted; 
 (iii) If
any Loan Party or Restricted Subsidiary intends to use Unrestricted Proceeds for any Investment or any repayment, in each case, of the type described in clause (ii) of the definition of “Unrestricted Proceeds” within fifteen
(15) Business Days prior to any scheduled principal or interest payment date under the Credit Agreement (for the purpose of this clause (iii), such scheduled principal or interest payment date a “specified payment date”), the Borrower
shall deliver or cause to be delivered to the Administrative Agent a certificate, no later than two (2) Business Days prior to the date on which such use of Unrestricted Proceeds is intended to be made, in which the Borrower shall
(A) certify that immediately before and after giving effect to the proposed use of such Unrestricted Proceeds, the Borrower has sufficient 

  
 6 

 
funds to pay in full in cash the amount of interest and/or principal (as applicable) due on such specified payment date, (B) certify as to the identity of the entity that intends to use
the Unrestricted Proceeds, (C) certify as to the amount of Unrestricted Proceeds available immediately before giving effect to such use of Unrestricted Proceeds, (D) certify as to the amount of Unrestricted Proceeds available immediately
after giving effect to such use of Unrestricted Proceeds, (E) certify as to the amount of Unrestricted Proceeds to be used, (F) certify as to the use such entity proposes to make using the Unrestricted Proceeds and (G) specify the
relevant provision of this Agreement under which such intended use is permitted; and” 
 (c) Clause (f) of Section 8.3 of
the Credit Agreement is amended and restated in its entirety to read as follows: 
 “(f) except as otherwise permitted under
this Section 8.3, any sales or dispositions of any Property purchased with Unrestricted Proceeds (so long as (i) prior to acquiring such Property, the Borrower or other Loan Party or Restricted Subsidiary has
notified the Administrative Agent of its intent to acquire such Property with Unrestricted Proceeds or (ii) prior to disposing of such Property, the Borrower or other Loan Party or Restricted Subsidiary has notified the
Administrative Agent that it has acquired such Property with Unrestricted Proceeds);” 
 (d) Clause (i) of Section 8.4 of
the Credit Agreement is amended and restated in its entirety to read as follows: 
 “(i) Investments in any Loan Party;
provided that, from the Effective Date until the date that is eighteen (18) months from the Effective Date, (x) no Restricted Subsidiary of Vista Holding I may make any Investment except in another Restricted
Subsidiary of Vista Holding I and (y) Vista Holding I may not make any Investment except in any Loan Party (1) in an amount, when taken together with the amount of any Restricted Payments made by Vista Holding
I, pursuant to Section 8.6(a)(i)(y)(1), not to exceed $100,000,000 in the aggregate at any time and/or (2) with Unrestricted Proceeds; ” 

(e) Sub-clause (i) of clause (a) of Section 8.4 of the Credit Agreement is amended and
restated in its entirety to read as follows: 
 “(i) any Restricted Subsidiary may pay, make or declare dividends or
distributions to Vista, to any Loan Party and/or any wholly-owned Restricted Subsidiary (and, in the case of any such Restricted Subsidiary that is not wholly-owned directly or indirectly by Vista, making such dividends or distributions to holders
of its Capital Stock other than a Loan Party on no more than a pro rata basis, measured by value, with any such dividends or distributions paid to such Loan Party); provided that, from the Effective Date until the date that is eighteen
(18) months from the Effective Date, so long as immediately before and after giving effect to any such Restricted Payment, no Default has occurred and is continuing or would result therefrom, (x) no Restricted
Subsidiary of Vista Holding I may make any Restricted Payment except a Restricted Payment to Vista Holding I or another Restricted Subsidiary of Vista Holding I and (y) Vista Holding I may not make any Restricted Payment other
than Restricted Payments to any Loan Party (1) in an amount, when taken together with the amount of any Investments made by Vista Holding I pursuant to Section 8.4(i)(y)(1), not to exceed $100,000,000 in the
aggregate at any time and/or (2) with Unrestricted Proceeds; ” 

  
 7 

 SECTION 3. Effective Date. This Amendment No. 1 shall become effective on
the first date (the “Amendment No. 1 Effective Date”) on which the following conditions precedent shall have been satisfied: 

(a) the Administrative Agent receives executed counterparts of this Amendment No. 1, properly executed and delivered by (x) an
Authorized Officer of each Loan Party and (y) Lenders constituting the Required Lenders, and 
 (b) the Borrower shall have paid all
reasonable and documented out-of-pocket expenses incurred by the Administrative Agent and the Lenders associated with the preparation, negotiation, execution and
delivery of this Amendment No. 1 and the Specified Waiver No. 1 (but limited, in the case of such costs and expenses related to counsel to the Administrative Agent and the Lenders, to those of Shearman & Sterling LLP). 

SECTION 4. Representations and Warranties of the Loan Parties. As of the date hereof and as of the Amendment No. l Effective
Date, the Loan Parties represent and warrant to the Administrative Agent and the Lenders that: 
 (a) each Loan Party has all
requisite power and authority to execute, deliver and perform the terms and provisions of this Amendment No. 1 and has taken all necessary corporate or other organizational action to authorize the execution, delivery and performance of this
Amendment No. 1. Each Loan Party has duly executed and delivered this Amendment No. 1. This Amendment No. 1 constitutes the legal, valid and binding obligation of such Loan Party, enforceable in accordance with its terms, except as
enforceability thereof may be limited by the effect of any applicable bankruptcy, insolvency, reorganization, moratorium or similar laws affecting creditors’ rights generally and by general principles of equity; 

(b) neither the execution, delivery or performance by any Loan Party of this Amendment No. 1, nor compliance by such Loan
Party with the terms and provisions hereof, (a) contravenes any provision of any Law or any order, writ, injunction or decree of any court or Governmental Authority binding on such Loan Party, (b) conflicts or is inconsistent with or
results in any breach of any of the terms, covenants, conditions or provisions of, or constitutes a default in respect of any Material Agreement, or results in the creation or imposition of any Lien (other than the Liens created under the Credit
Documents) upon any of the property or assets of such Loan Party or (c) violates any provision of the estatutos sociales, articles of incorporation, bylaws or other Organizational Documents of such Loan Party; 

(c) no authorization, consent or approval of, or notice to or filing with, any Governmental Authority or any other Person is
required to authorize, or is required in connection with, (a) the execution, delivery and performance by any Loan Party of this Amendment No. 1, (b) the legality, validity or binding effect against any Loan Party of this Amendment
No. 1, or (c) except to the extent required or contemplated by the Credit 

  
 8 

 
Documents or customary actions taken in connection with any litigation or proceeding relating to the enforcement of creditors’ rights, the enforceability of this Amendment No. 1 against any
Loan Party. 
 (d) no Default or Event of Default has occurred and is continuing; and 

(e) each of the representations and warranties made by the Borrower in Section 6 of the Credit Agreement is true and
correct in all material respects with the same effect as if made on the date hereof, except to the extent such representation or warranty expressly relates to an earlier date, in which case, such representation shall be true and correct in all
material respects as of such earlier date. 
 SECTION 5. References to and Effect on Other Financing Documents. (a) On
and after the Amendment No. 1 Effective Date, this Amendment No. 1 shall for all purposes be deemed to be a Credit Document under the Credit Agreement. 

(a) The Credit Agreement is and shall continue to be in full force and effect and is hereby in all respects ratified and
confirmed. 
 (b) The execution, delivery and effectiveness of this Amendment No. 1 shall not, except as expressly
provided herein, (i) operate as a waiver or amendment of any right, power or remedy of any Lender or the Administrative Agent under any of the Credit Documents, nor constitute a waiver or amendment of any provision of any of the Credit
Documents, (ii) prejudice any other right, power or remedy which the Lenders or the Administrative Agent now have or may have in the future under or in connection with the Credit Agreement or the other Credit Documents, or (iii) be a
novation (novación) of the obligations of the Borrower under any of the Credit Documents. 
 SECTION 6. GOVERNING
LAW. THIS AMENDMENT NO. 1. AND THE RIGHTS AND OBLIGATIONS OF THE PARTIES HEREUNDER SHALL BE CONSTRUED IN ACCORDANCE WITH AND BE GOVERNED BY THE LAW OF THE STATE OF NEW YORK. The parties hereby agree that Section 12.5 of
the Credit Agreement shall apply to this Amendment No. 1 mutatis mutandis. 
 SECTION 7. Headings. The headings
contained herein are for convenience of reference only and do not constitute a part of this Amendment No. 1. 
 SECTION
8.Counterparts. This Amendment No. 1 may be executed in one or more counterparts, each of which shall be deemed an original, but all of which together shall constitute one and the same instrument. Delivery by
facsimile or other electronic means of an executed counterpart of a signature page to this Amendment No. 1 shall be effective as delivery of an original executed counterpart of this Amendment No. 1. 

[Remainder of page intentionally left blank] 

  
 9 

 Execution Version 

June 10, 2019 
 VISTA OIL & GAS
ARGENTINA S.A., as Borrower 
 Avenida del Libertador 101, Piso 12, Torre Sur 

1638, Vicente Lopez 
 Buenos Aires 

Attention: Alejandro Cherñacov 
 VISTA OIL & GAS,
S.A.B. DE C.V. 
 VISTA OIL & GAS HOLDING I, S.A. DE C.V. 

APCO ARGENTINA S.A. 
 APCO OIL & GAS S.A.U. 

VISTA HOLDING II, S.A. DE C.V. 
 as Guarantors 

Ladies and Gentlemen: 
 The undersigned Required
Lenders hereby accepts your Offer No. 02/2019, dated June 10, 2019. Capitalized terms used but not defined herein shall have the meaning assigned to such term in that certain Offer No. 02/2019. 

This letter shall be governed by and construed in accordance with the laws of the State of New York. 

[Remainder of page intentionally left blank] 

  
 1 

 
			
	 ITAÚ UNIBANCO S.A., NASSAU BRANCH,

as Administrative Agent and a Required Lender

		
	By:	 	 /s/ Gilson Gomes de Paula

	Name:	 	Gilson Gomes de Paula
	Title:	 	Manager
		
	By:	 	 /s/ Albina Izquierdo

	Name:	 	Albina Izquierdo
	Title:	 	Authorized Signature

  
 [Signature Page to
Offer No. 02/2019 Acceptance Letter – Amendment No. 1 (Itaú)] 

 
			
	 BANCO DE GALICIA Y BUENOS AIRES S.A.,

as a Required Lender

		
	By:	 	 /s/ Fernando Lema

	Name:	 	Fernando Lema
	Title:	 	Manager

  
 [Signature Page to
Offer No. 02/2019 Acceptance Letter – Amendment No. 1 (Banco Galicia)] 

 
			
	 BANCO SANTANDER RÍO, S.A.,

as a Required Lender

		
	By:	 	 /s/ Ignacio Lorenzo

	Name:	 	Ignacio Lorenzo
	Title:	 	Managing Director
		
	By:	 	 /s/ Alejandro Butti

	Name:	 	Alejandro Butti
	Title:	 	Attorney-in-Fact

  
 [Signature Page to
Offer No. 02/2019 Acceptance Letter – Amendment No. 1 (Santander)] 

 
			
	 CITIBANK, N.A.
 as a Required
Lender

		
	By:	 	 /s/ Adrian Guzzoni

	Name:	 	Adrian Guzzoni
	Title:	 	Managing Director

  
 [Signature Page to
Offer No. 02/2019 Acceptance Letter – Amendment No. 1 (Citibank)]

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00297-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00297-of-00352.parquet"}]]