Document:

Assignment and Amendment Agreement

 EXHIBIT 10.3 
 Execution Version 
 For Information Purposes 

ASSIGNMENT AND AMENDMENT AGREEMENT dated September 30, 2011 (this “Assignment and Amendment Agreement”)
entered into by and among Kansas City Southern de México, S.A. de C.V. (“KCSM”), Arrendadora KCSM, S. de R.L. de C.V. (“Arrendadora”), Highstar Harbor Holdings México, S. de R.L. de C.V.
(“HHH”), MTC Puerta Mexico, S. de R.L. de C.V. (“MTC”), and Vamos a México, S.A. de C.V. (“VAM” and together with KCSM, Arrendadora, HHH and MTC, the “Pledgors” and each a
“Pledgor”), Scotiabank Inverlat, S.A., Institución de Banca Múltiple, Grupo Financiero Scotiabank Inverlat, in its capacity as Original Collateral Agent, acting on its own behalf and on behalf and for the benefit of
the Secured Parties as original pledgee (hereinafter, the “Substituted Pledgee”), JPMorgan Chase Bank, N.A., as New Collateral Agent, acting on its own behalf and on behalf and for the benefit of the Secured Parties as new pledgee
(hereinafter, together with its successors or assigns, the “Substitute Pledgee”, and together with the Pledgors and the Substituted Pledgee, the “Parties”) (capitalized terms used and not defined herein shall have
the meanings ascribed to them in the Asset Pledge Agreement (as defined below)). 
 RECITALS 

(a) WHEREAS, on August 30, 2010, KCSM, as borrower, entered into a Credit Agreement for the maximum principal amount of
US$100,000,000.00 (one hundred million dollars 00/100, currency of the United States of America) (the “Existing Credit Agreement”), with various financial institutions and other persons from time to time parties thereto or that
subsequently became parties thereto (including their successors and assigns) as lenders, The Bank of Nova Scotia, as administrative agent, the Substituted Pledgee, as Collateral Agent, and The Bank of Nova Scotia and Banc of America Securities LLC,
as joint lead arrangers and joint bookrunners. 
 (b) WHEREAS, on August 30, 2010, the Substituted Pledgee and the
Pledgors entered into a Pledge without Transfer of Possession Agreement (Contrato de Prenda sin Transmisión de Posesión (the “Original Asset Pledge Agreement”), under which the Pledgors granted a first priority
lien in favor of the Substituted Pledgee in respect of the Pledged Assets, to secure the due and punctual performance of the Obligations. A copy of the Asset Pledge Agreement (without exhibits) is attached hereto as Exhibit
“A”. 
 (c) WHEREAS, on February 15, 2011, the Substituted Pledgee and the Pledgors entered into
an amendment agreement of the Original Asset Pledge Agreement, to the effect of substituting Exhibit E of the Original Asset Pledge Agreement, (the “First Amendment to the Asset Pledge Agreement” and together with the Original Asset
Pledge Agreement, the “Asset Pledge Agreement”). A copy of the First Amendment to the Asset Pledge Agreement (with exhibits) is attached hereto as Exhibit “B”. 

  

 (d) WHEREAS, on the date hereof, KCSM, as borrower, entered into an Amended and
Restated Credit Agreement to amend and restate the Existing Credit Agreement in its entirety, including but not limited to, increase the maximum principal amount to US$200,000,000.00 (two hundred million dollars 00/100, currency of the United States
of America) (the “Credit Agreement”), with various financial institutions and other persons from time to time parties thereto (including their successors and assigns) as lenders, JPMorgan Chase Bank, N.A., as administrative agent
and as collateral agent, JPMorgan Securities, LLC and Merrill Lynch, Pierce, Fenner & Smith, Incorporated, as joint lead arrangers and joint bookrunners, JPMorgan Securities LLC as Syndication Agent, BBVA Bancomer, S.A., Institución
de Banca Múltiple, Grupo Financiero BBVA Bancomer as joint bookrunner and co-documentation agent and Bank of America N.A. as co-documentation agent. A copy of the Credit Agreement (without exhibits) is attached hereto as Exhibit
“C”. 
 (e) WHEREAS, the Parties hereto are entering into this Assignment and Amendment Agreement in
order for the Substituted Pledgee to assign its rights and obligations under the Asset Pledge Agreement in favor of the Substitute Pledgee and to amend certain terms and conditions of the Asset Pledge Agreement, resulting from the execution of the
Credit Agreement. 
 REPRESENTATIONS 

 

	 	I.	Each of the Pledgors hereby represents and warrants that: 

 (a) Arrendadora, HHH and MTC are each a limited liability company with variable capital (sociedad de responsabilidad limitada de capital variable), and KCSM and VAM are each a corporation with
variable capital (sociedad anónima de capital variable), duly organized and validly existing under the laws of the United Mexican States (“Mexico”) and is in compliance of its corporate and any other obligations under
the laws of the jurisdiction of its organization. 
 (b) It has the corporate power and authority to enter into this Assignment
and Amendment Agreement and has obtained all required corporate authorizations and approvals to perform its obligations in the terms provided hereunder. 
 (c) Its attorney-in-fact is duly authorized to enter into this Assignment and Amendment Agreement, which authority has not been revoked or modified in any manner whatsoever. 

(d) The execution and performance of this Assignment and Amendment Agreement and the granting of the pledge under the Asset Pledge
Agreement do not violate its by-laws or any other documents or any law, regulation, judgment or order applicable to it or any contract, agreement, deed or other instrument to which it is a party or to which its rights and properties are subject or
result in the creation or imposition of any lien, claim or rights of third parties upon or with respect to any such properties, other than the pledge under the Asset Pledge Agreement. 

  
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 (e) It is the legal and beneficial owner, free of any lien, encumbrances or ownership
limitations (except for the pledge and security interest created under the Asset Pledge Agreement) of the Pledged Assets. 
 (f)
It is willing to enter into this Assignment and Amendment Agreement in order to acknowledge the assignment of the Substituted Pledgee’s rights and obligations to the Substitute Pledgee and to maintain a first priority pledge in the Pledged
Assets, in favor of the Substitute Pledgee, in its capacity as Collateral Agent, acting on behalf and for the benefit of the Secured Parties and to secure the Obligations. 
 (g) Other than as described herein, the execution of this Assignment and Amendment Agreement does not affect the first priority security interest in the Pledged Assets granted under the Asset Pledge
Agreement to secure the due and prompt satisfaction of any and all of the Obligations and all the necessary actions to perfect and protect such security interest have been taken. 

(h) Except as expressly stated herein, no consent of any other person and no authorization, permit, approval or other action by, and no
notice to or filing with, any governmental authority or regulatory body is required (i) for the Pledgors to execute this Assignment and Amendment Agreement and to maintain the pledge by the Pledgors of the Pledged Assets pursuant to the Asset
Pledge Agreement or for the execution or performance of this Assignment and Amendment Agreement by the Pledgors, (ii) for the perfection or maintenance of the pledge on the Pledged Assets created under the Asset Pledge Agreement (including the
first priority nature of such pledge) or (iii) to exercise the remedies in respect of the Pledged Assets pursuant to the Asset Pledge Agreement. 
 (i) By executing this Assignment and Amendment Agreement, it expressly recognizes the existence of the Secured Parties and the legal capacity of the Substituted Pledgee and of the Substitute Pledgee to
act as Collateral Agent on behalf and for the benefit of Secured Parties in the execution of this Assignment and Amendment Agreement and under the Asset Pledge Agreement, and the legal capacity and authority of its respective representatives to
execute this Assignment and Amendment Agreement. 
  

	 	II.	The Substitute Pledgee hereby represents and warrants that: 

 (a) It is a national association legally organized and validly existing under the laws of the United States of America, acting on behalf and for the benefit of the Secured Parties, as Collateral Agent
pursuant to the terms of the Credit Agreement. 
 (b) Its representative is duly authorized to enter into this Assignment and
Amendment Agreement, which authority has not been revoked or modified in any manner whatsoever. 
  

	 	III.	The Substituted Pledgee hereby represents and warrants that: 

  
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 (a) It is a bank (institución de banca múltiple) legally organized and
validly existing under the laws of Mexico. 
 (b) Its representative is duly authorized to enter into this Assignment and
Amendment Agreement, which authority has not been revoked or modified in any manner whatsoever. 
 NOW, THEREFORE the Parties
have agreed to the following: 
 CLAUSES 
 FIRST. Assignment of the Substituted Pledgee’s Rights and Obligations in favor of the Substitute Pledgee. 
 (a) The Substituted Pledgee hereby assigns and transfers all its rights and obligations under the Asset Pledge Agreement to the Substitute Pledgee, and the Substitute Pledgee hereby accepts such
assignment and transfer. As a consequence of the assignment herein, the Substitute Pledgee will act herefrom as Pledgee under the Asset Pledge Agreement. 
 (b) In view of the foregoing, the Parties hereby agree that from the date of execution of this Assignment and Amendment Agreement (i) each reference to the “Pledgee” under the Asset Pledge
Agreement, shall mean a reference to the Substitute Pledgee; (ii) each reference in the Asset Pledge Agreement to “this Agreement”, “hereunder”, “hereof” or similar words referring to the Asset Pledge Agreement,
shall mean and be a reference to the Asset Pledge Agreement, as amended by this Assignment and Amendment Agreement and (iii) each reference to the “Credit Agreement” under the Asset Pledge Agreement, shall mean and be a reference to
the Credit Agreement, as defined herein. 
 (c) Each of the Pledgors hereby agrees and acknowledges that the Substitute Pledgee
in its capacity as Collateral Agent under Asset Pledge Agreement, shall have no liability or responsibility whatsoever for any event, circumstance, act or omission by any party, prior to the date hereof and the Substituted Pledgee shall have no
liability or responsibility whatsoever for any event, circumstance, act or omission by any party after the date hereof. 
 (d)
Each of the Pledgors grants the Substituted Pledgee the fullest release available under applicable law with respect to the acts of the Substituted Pledgee, in its capacity as pledgee under the Asset Pledge Agreement, and waives any right or claim it
may have resulting from such actions against the Substituted Pledgee, and expressly releases the Substituted Pledgee of any and all liabilities therefrom, except in the case of negligence, bad faith or willful misconduct of the Substituted Pledgee.
Furthermore, the Pledgors agree to indemnify and hold harmless the Substituted Pledgee with respect to any actions, losses, liabilities, damages, claims or direct costs and expenses, prior to the date hereof, in terms of Clause Twelfth of the Asset
Pledge Agreement. 
 SECOND. Registration. 

  
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 (a) As required under Articles 365, 366 and 376 of the LGTOC and 204, 205, 206 and 212 of
the RSF, the Pledgors: 
 (1) on the date hereof, execute and formalize this Assignment and Amendment Agreement
before a Mexican notary public; 
 (2) shall file for registration, within fifteen (15) calendar days
following the date hereof (with such extensions as the Substitute Pledgee may grant in its sole discretion), this Assignment and Amendment Agreement before the RFM and the RPPC; 

(3) shall file this Assignment and Amendment Agreement for registration with the Registry of Guaranties on Movable Assets
within fifteen (15) calendar days following the date hereof (with such extensions as the Substitute Pledgee may grant in its sole discretion); and 
 (4) shall obtain and deliver to the Substitute Pledgee written confirmation, in terms satisfactory to the Substitute Pledgee, of the registration of this Assignment and Amendment Agreement with
(i) the RFM and the Registry of Guaranties on Movable Assets, within thirty (30) Business Days from the date of its filing before the RFM and the Registry of Guaranties on Movable Assets, respectively (with such extensions as the
Substitute Pledgee may grant in its discretion), and (ii) the RPPC, within one hundred and twenty (120) calendar days from the date of its filing before the RPPC (with such extensions as the Substitute Pledgee may grant in its sole
discretion). 
 (b) The Pledgors shall pay any registration fees, taxes, notary public fees and any related fees, costs and
expenses incurred in connection with the formalization and registration of this Assignment and Amendment Agreement as aforesaid. The Substitute Pledgee and the Substituted Pledgee shall in no event be liable for any of such fees, taxes costs or
expenses. The rejection or delay by any registry of the registration of this Assignment and Amendment Agreement shall in no way affect the obligations of the Pledgors under this Clause. 
 THIRD. Delivery of Documents. 
 As a consequence of the assignment of
the Substituted Pledgee’s rights and obligations in favor of the Substitute Pledgee, 
 (a) The Substituted Pledgee hereby
delivers to the Substitute Pledgee who hereby expressly acknowledges receipt of, originals of the first original copy (primer testimonio) of the public deeds containing the Original Asset Pledge Agreement and the First Amendment to the Asset
Pledge Agreement, duly registered at the RPPC, and the Registry of Guaranties on Movable Assets as well as the original evidence of registration of the Original Asset Pledge Agreement and the First Amendment to the Asset Pledge Agreement with the
RFM. 

  
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 (b) The Parties hereby agree to execute and deliver any and all documents reasonably
required to carry out the registrations described in Clause Second herein, including but not limited, the execution by the Substituted Pledgee and the Substitute Pledgee of the documents reasonably required for the registration of this Assignment
and Amendment Agreement with the RPPC and the Registry of Guaranties on Movable Assets. 
 FOURTH. Ratification of the Terms of the
Asset Pledge Agreement. 
 The Parties agree and confirm that the only amendments to the Asset Pledge Agreement are those set
forth in this Assignment and Amendment Agreement. The Pledgors and the Substitute Pledgee hereby confirm and ratify all of the terms and conditions of the Asset Pledge Agreement which are, and continue to be, in full force and effect. 

FIFTH. No Novation. 
 The execution of this Assignment and Amendment Agreement shall not constitute (i) a novation (novación) of the obligations of the Pledgors and the Substitute Pledgee under the Asset
Pledge Agreement or (ii) a novation (novación), modification or payment of the Obligations. 
 SIXTH. Notices.

 (a) All notices and other communications related to this Agreement, shall be in writing, in the English and Spanish languages,
and shall be delivered or sent to the domiciles or facsimile numbers set forth below, or in any other domicile or facsimile number designated by each party or its representatives by written notice to the other party. Such notices and communications
shall be delivered or sent (i) by hand, (ii) by courier, or (iii) by facsimile. The parties for such effects designate the following domiciles: 
 The Pledgors: 
 Kansas City Southern de México, S.A. de C.V. 

Arrendadora KCSM, S. de R.L. de C.V. 
 Highstar
Harbor Holdings México, S. de R.L. de C.V. 
 MTC Puerta México, S. de R.L. de C.V. 

Vamos a México, S.A. de C.V. 
 Montes
Urales No. 625 
 Col. Lomas de Chapultepec 
 11000, México D.F. 
 Facsimile: (5255) 9178 5600 ext. 22179 

Telephone: (5255) 9178 5647 
 Attention:
Legal Department (Departamento Jurídico) 

  
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 The Substituted Pledgee: 
 Scotiabank Inverlat, S.A., Institución de Banca Múltiple, Grupo Financiero Scotiabank Inverlat 
 Blvd. Manuel Ávila Camacho No. 1, 2nd floor 
 Col. Lomas de Chapultepec, P.C. 11009

 México, D.F. 
 Telephone: 5255
52292369 
 Facsimile: 5255 52292010 

Attention: Marcela Castillo Nogueron
 Email:
mcastillon@scotiabank.com.mx 
 cc: The Bank of Nova Scotia
 720 King Street West, 2nd Floor Toronto, Ontario Canada M5V2T3 
 GWS-Agency & U.K. Loan
Operations
 Telephone: 416 6494006 

Facsimile: 416 3505701 
 Attention: Russell
Tan 
 Email: russell_tan@scotiacapital.com 
 The Substitute Pledgee: 
 JPMorgan Chase Bank, N.A. 

Loan and Agency Services Group 
 1111
Fannin, Floor 10 
 Houston, Texas 77002 

Telephone: (713) 750 1882 / (713) 427 6530 
 Facsimile: (713) 750 2938 
 Attention: Colton Rainey/Jide Williams 

cc: JPMorgan Chase Bank, N.A. 
 383 Madison
Avenue 
 New York, New York 10179 

Facsimile: (212) 270-5100 
 Attention:
Matthew Massie 
 (b) Any Party may change its domicile to receive notices pursuant to this Assignment and Agreement by giving
written notice not less than five (5) Business Days prior to the date on which such change shall become effective in accordance with the provisions of this Clause. 
 (c) Any notice, if mailed and properly addressed with postage prepaid or if properly addressed and sent by pre-paid courier service, shall be deemed given when received; any notice, if transmitted by
facsimile, shall be deemed given when the confirmation of transmission thereof is received by the transmitter; provided that, as long as it is authorized by applicable law, the 

  
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impossibility of delivering notices due to changes in the addresses that have not been notified to the other Party hereto, or the refusal of any party to accept any notice, shall be considered
received on the date of such delivery to the prior address or refusal to accept a notice. 
 SEVENTH. Governing Law and
Jurisdiction. 
 This Assignment and Amendment Agreement shall be governed by and construed in accordance with the federal
laws of Mexico. For the interpretation, construction, performance and enforcement of this Assignment and Amendment Agreement, the Parties irrevocably submit to the jurisdiction of the federal courts located in the Federal District, and waive any
right to any jurisdiction to which they may be entitled by reason of their respective present or future domicile. 

[signature pages follow] 

  
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 IN WITNESS WHEREOF, the Parties execute this Assignment and Amendment Agreement as of
the date first above written. 
 PLEDGOR 
 KANSAS CITY SOUTHERN DE MÉXICO, S.A. de C.V. 
  

	
	 Rodrigo Flores León

BY: Rodrigo Flores León
 TITLE: Attorney-in-Fact

PLEDGOR 

ARRENDADORA KCSM. S. DE R.L. DE C.V. 
  

	
	 Rodrigo Flores León

BY: Rodrigo Flores León
 TITLE: Attorney-in-Fact

PLEDGOR 

HIGHSTAR HARBOR HOLDINGS 
 MEXICO, S. DE R.L. de C.V. 
  

	
	 Rodrigo Flores León

BY: Rodrigo Flores León
 TITLE: Attorney-in-Fact

  
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	 PLEDGOR
  

MTC PUERTA MEXICO, S. DE R.L. de C.V.
  

Rodrigo Flores León
 BY: Rodrigo Flores León
 TITLE: Attorney-in-Fact

 

	 PLEDGOR
  

VAMOS A MÉXICO, S.A. de C.V.
  

Rodrigo Flores León
 BY: Rodrigo Flores León
 TITLE: Attorney-in-Fact

  
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	 THE SUBSTITUTED PLEDGEE

 
 SCOTIABANK INVERLAT, S.A., INSTITUCIÓN
DE
 BANCA MÚLTIPLE, GRUPO FINANCIERO
 SCOTIABANK INVERLAT,
 as former collateral agent, acting on its own behalf
and
 on behalf and for the benefit of the Secured Parties

 
 /s/ Oscar Pedro Alvarado
Estevez
 BY: Oscar Pedro Alvarado Estevez
 TITLE: Attorney-in-Fact
  

/s/ Edgar Luises Castro
 BY: Edgar Luises Castro
 TITLE: Attorney-in-Fact

 

	 THE SUBSTITUTE PLEDGEE

 
 JPMORGAN CHASE BANK, N.A.,

as Collateral Agent, acting on its own behalf and
 on behalf and for the benefit of the Secured Parties
  

/s/ Eduardo Gras Gómez Palacio

BY: Eduardo Gras Gómez Palacio
 TITLE: Attorney-in-Fact

  
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 Exhibit “A” 

Original Asset Pledge Agreement (without exhibits) 

  
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 Exhibit “B” 

First Amendment to the Asset Pledge Agreement (with exhibits) 

  
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 Exhibit “C” 

Credit Agreement 

  
 14Assignment and Amendment Agreement

 EXHIBIT 10.4 
 Execution Version 
 ASSIGNMENT AND AMENDMENT AGREEMENT dated
September 30, 2011 (this “Assignment and Amendment Agreement”) entered into by and among MTC Puerta México, S. de R.L. de C.V. (“MTC”) and Highstar Harbor Holdings México, S. de R.L. de C.V
(“HHH” and together with MTC, the “Pledgors” and each a “Pledgor”), Vamos a México, S.A. de C.V. (the “Company”), Scotiabank Inverlat, S.A., Institución de Banca
Múltiple, Grupo Financiero Scotiabank Inverlat, in its capacity as Original Collateral Agent, acting on its own behalf and on behalf and for the benefit of the Secured Parties as original pledgee (hereinafter, the “Substituted
Pledgee”), JPMorgan Chase Bank, N.A., as New Collateral Agent, acting on its own behalf and on behalf and for the benefit of the Secured Parties as new pledgee (hereinafter, together with its successors or assigns, the “Substitute
Pledgee”, and together with the Pledgors, the Company and the Substituted Pledgee, the “Parties”) (capitalized terms used and not defined herein shall have the meanings ascribed to them in the Stock Pledge Agreement (as
defined below)). 
 RECITALS 
 (a) WHEREAS, on August 30, 2010, Kansas City Southern de México, S.A. de C.V. (“KCSM”), as borrower, entered into a Credit Agreement for the maximum principal amount of
US$100,000,000.00 (one hundred million dollars 00/100, currency of the United States of America) (the “Existing Credit Agreement”), with various financial institutions and other persons from time to time parties thereto or that
subsequently became parties thereto (including their successors and assigns) as lenders, The Bank of Nova Scotia, as administrative agent, the Substituted Pledgee, as Collateral Agent, and The Bank of Nova Scotia and Banc of America Securities LLC,
as joint lead arrangers and joint bookrunners. 
 (b) WHEREAS, on August 30, 2010, the Substituted Pledgee, the
Company and the Pledgors entered into a Stock Pledge Agreement (Contrato de Prenda sobre Acciones) (the “Stock Pledge Agreement”), under which the Pledgors granted a first priority lien in favor of the Substituted Pledgee in
respect of the Collateral, to secure the due and punctual performance of the Obligations. A copy of the Stock Pledge Agreement (without exhibits) is attached hereto as Exhibit “A”. 

(c) WHEREAS, on the date hereof, KCSM, as borrower, entered into an Amended and Restated Credit Agreement to amend and restate the
Existing Credit Agreement in its entirety, including but not limited to, increase the maximum principal amount to US$200,000,000.00 (two hundred million dollars 00/100, currency of the United States of America) (the “Credit
Agreement”), with various financial institutions and other persons from time to time parties thereto (including their successors and assigns) as lenders, JPMorgan Chase Bank, N.A., as administrative agent and as collateral agent, JPMorgan
Securities, LLC and Merrill Lynch, Pierce, Fenner & Smith, Incorporated, as joint lead arrangers and joint bookrunners, JPMorgan Securities LLC as Syndication Agent, BBVA Bancomer, S.A., Institución de Banca Múltiple, Grupo
Financiero BBVA Bancomer as joint bookrunner and co-

 
documentation agent and Bank of America N.A. as co-documentation agent. A copy of the Credit Agreement (without exhibits) is attached hereto as Exhibit “B”. 

(d) WHEREAS, the Parties hereto are entering into this Assignment and Amendment Agreement in order for the Substituted Pledgee to
assign its rights and obligations under the Stock Pledge Agreement in favor of the Substitute Pledgee and to amend certain terms and conditions of the Stock Pledge Agreement, resulting from the execution of the Credit Agreement. 

REPRESENTATIONS 
  

	 	I.	Each of the Pledgors hereby represents and warrants that: 

 (a) It is a limited liability company with variable capital (sociedad de responsabilidad limitada de capital variable) duly organized and validly existing under the laws of the United Mexican
States (“Mexico”) and is in compliance with its corporate and any other obligations under the laws of the jurisdiction of its organization. 
 (b) It has the corporate power and authority to enter into this Assignment and Amendment Agreement and has obtained all required corporate authorizations and approvals to perform its obligations in the
terms provided hereunder. 
 (c) Its attorney-in-fact is duly authorized to enter into this Assignment and Amendment Agreement,
which authority has not been revoked or modified in any manner whatsoever. 
 (d) The execution and performance of this
Assignment and Amendment Agreement and the granting of the pledge under the Stock Pledge Agreement do not violate its by-laws or any other documents or any law, regulation, judgment or order applicable to it or any contract, agreement, deed or other
instrument to which it is a party or to which its rights and properties are subject or result in the creation or imposition of any lien, claim or rights of third parties upon or with respect to any such properties, other than the pledge under the
Stock Pledge Agreement. 
 (e) It is the legal and beneficial owner, free of any lien, encumbrances or ownership limitations
(except for the pledge and security interest created under the Stock Pledge Agreement) of the Collateral. 
 (f) It is willing
to enter into this Assignment and Amendment Agreement in order to acknowledge the assignment of the Substituted Pledgee’s rights and obligations to the Substitute Pledgee and to maintain a first priority pledge in the Collateral, in favor of
the Substitute Pledgee, in its capacity as Collateral Agent, acting on behalf and for the benefit of the Secured Parties and to secure the Obligations. 
 (g) Other than as described herein, the execution of this Assignment and Amendment Agreement does not affect the first priority security interest in the Collateral granted under the

  
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Stock Pledge Agreement to secure the due and prompt satisfaction of any and all of the Obligations and all the necessary actions to perfect and protect such security interest have been taken.

 (h) Except as expressly stated herein, and for the notices than need to be given pursuant to the Permit in connection with
this Assignment and Amendment Agreement, and if such the case, for any transfer of the Pledged Shares in case of foreclosure, no consent of any other person and no authorization, permit, approval or other action by, and no notice to or filing with,
any governmental authority or regulatory body is required (i) for the Pledgors to execute this Assignment and Amendment Agreement and to maintain the pledge by the Pledgors of the Collateral pursuant to the Stock Pledge Agreement or for the
execution or performance of this Assignment and Amendment Agreement by the Pledgors, (ii) for the perfection or maintenance of the pledge on the Collateral created under the Stock Pledge Agreement (including the first priority nature of such
pledge) or (iii) to exercise the remedies in respect of the Collateral pursuant to the Stock Pledge Agreement. 
 (i) By
executing this Assignment and Amendment Agreement, it expressly recognizes the existence of the Secured Parties and the legal capacity of the Substituted Pledgee and of the Substitute Pledgee to act as Collateral Agent on behalf and for the benefit
of Secured Parties in the execution of this Assignment and Amendment Agreement and under the Stock Pledge Agreement, and the legal capacity and authority of its respective representatives to execute this Assignment and Amendment Agreement.

  

	 	II.	The Substitute Pledgee hereby represents and warrants that: 

 (a) It is a national association legally organized and validly existing under the laws of the United States of America, acting on behalf and for the benefit of the Secured Parties, as Collateral Agent
pursuant to the terms of the Credit Agreement. 
 (b) Its representative is duly authorized to enter into this Assignment and
Amendment Agreement, which authority has not been revoked or modified in any manner whatsoever. 
  

	 	III.	The Substituted Pledgee hereby represents and warrants that: 

 (a) It is a bank (institución de banca múltiple) legally organized and validly existing under the laws of Mexico. 

(b) Its representative is duly authorized to enter into this Assignment and Amendment Agreement, which authority has not been revoked or
modified in any manner whatsoever. 
  

	 	IV.	The Company hereby represents and warrants that: 

  
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 (a) It is a corporation with variable capital (sociedad anónima de capital
variable), duly organized and validly existing under the laws of Mexico and is in compliance with its corporate and any other obligations under the laws of the jurisdiction of its organization. 

(b) It has the corporate power and authority to enter into this Assignment and Amendment Agreement and has obtained all required
corporate authorizations and approvals to perform its obligations in the terms provided hereunder. 
 (c) Its attorney-in-fact
is duly authorized to enter into this Assignment and Amendment Agreement, which authority has not been revoked or modified in any manner whatsoever. 
 (d) The execution and performance of this Assignment and Amendment Agreement and the granting of the pledge under the Stock Pledge Agreement do not violate its by-laws or any other documents or any law,
regulation, judgment or order applicable to it or any contract, agreement, deed or other instrument to which it is a party or to which its rights and properties are subject or result in the creation or imposition of any lien, claim or rights of
third parties upon or with respect to any such properties. 
 (e) It is willing to enter into this Assignment and Amendment
Agreement in order to acknowledge the assignment of the Substituted Pledgee’s rights and obligations to the Substitute Pledgee and to maintain a first priority pledge in the Collateral, in favor of the Substitute Pledgee, in its capacity as
Collateral Agent, acting on behalf and for the benefit of the Secured Parties and to secure the Obligations. 
 (f) Other than
as described herein, the execution of this Assignment and Amendment Agreement does not affect the first priority security interest in the Collateral granted under the Stock Pledge Agreement to secure the due and prompt satisfaction of any and all of
the Obligations and all the necessary actions to perfect and protect such security interest have been taken. 
 (g) Except as
expressly provided herein, and for the notices than need to be given pursuant to the Permit in connection with this Assignment and Amendment Agreement, and if such the case, for any transfer of the Pledged Shares in case of foreclosure, no consent
of any other person and no authorization, permit, approval or other action by, and no notice to or filing with, any governmental authority or regulatory body is required (i) for the Pledgors to execute this Assignment and Amendment Agreement
and to maintain the pledge by the Pledgors of the Collateral pursuant to the Stock Pledge Agreement or for the execution or performance of this Assignment and Amendment Agreement by the Pledgors, (ii) for the perfection or maintenance of the
pledge on the Collateral created under the Stock Pledge Agreement (including the first priority nature of such pledge) or (iii) to exercise the remedies in respect of the Collateral pursuant to the Stock Pledge Agreement. 

  
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 (h) By executing this Assignment and Amendment Agreement, it expressly recognizes the
existence of the Secured Parties and the legal capacity of the Substituted Pledgee and of the Substitute Pledgee to act as Collateral Agent on behalf and for the benefit of Secured Parties in the execution of this Assignment and Amendment Agreement
and under the Stock Pledge Agreement, and the legal capacity and authority of its respective representatives to execute this Assignment and Amendment Agreement. 
 NOW, THEREFORE the Parties have agreed to the following: 
 CLAUSES

 FIRST. Assignment of the Substituted Pledgee’s Rights and Obligations in favor of the Substitute Pledgee.

 (a) The Substituted Pledgee hereby assigns and transfers all its rights and obligations under the Stock Pledge Agreement to
the Substitute Pledgee, and the Substitute Pledgee hereby accepts such assignment and transfer. As a consequence of the assignment herein, the Substitute Pledgee will act herefrom as Pledgee under the Stock Pledge Agreement. 

(b) In view of the foregoing, the Parties hereby agree that from the date of execution of this Assignment and Amendment Agreement
(i) each reference to the “Pledgee” under the Stock Pledge Agreement, shall mean a reference to the Substitute Pledgee; (ii) each reference in the Stock Pledge Agreement to “this Agreement”, “hereunder”,
“hereof” or similar words referring to the Stock Pledge Agreement, shall mean and be a reference to the Stock Pledge Agreement, as amended by this Assignment and Amendment Agreement and (iii) each reference to the “Credit
Agreement” under the Stock Pledge Agreement, shall mean and be a reference to the Credit Agreement, as defined herein. 

(c) Each of the Pledgors hereby agrees and acknowledges that the Substitute Pledgee in its capacity as Pledgee under the Stock Pledge
Agreement, shall have no liability or responsibility whatsoever for any event, circumstance, act or omission by any party, prior to the date hereof and the Substituted Pledgee shall have no liability or responsibility whatsoever for any event,
circumstance, act or omission by any party after the date hereof. 
 (d) Each of the Pledgors grants the Substituted Pledgee the
fullest release available under applicable law with respect to the acts of the Substituted Pledgee, in its capacity as pledgee under the Stock Pledge Agreement, and waives any right or claim it may have resulting from such actions against the
Substituted Pledgee, and expressly releases the Substituted Pledgee of any and all liabilities therefrom, except in the case of negligence, bad faith or willful misconduct of the Substituted Pledgee. Furthermore, the Pledgors agree to indemnify and
hold harmless the Substituted Pledgee with respect to any actions, losses, liabilities, damages, claims or direct costs and expenses, prior to the date hereof, in terms of Clause Ninth of the Stock Pledge Agreement. 

SECOND. Registration and Voting Rights. 

  
 5 

 (a) As required under Article 334 Section II of the LGTOC, the Pledgors: 

(1) on the date hereof, execute and formalize this Assignment and Amendment Agreement before a Mexican notary public;

 (2) deliver to the Substitute Pledgee the original share certificates evidencing the Pledged Shares,
respectively, endorsed in guaranty (endosados en prenda) in favor of the Substitute Pledgee; 
 (3)
deliver to the Substitute Pledgee, a copy of the entry in the stock registry (libro de registro de acciones) of the Company, containing a notation duly certified by the Secretary of the Board of Directors and a notary public stating that the
Pledged Shares have been pledged in favor of the Substitute Pledgee hereunder; 
 (4) shall file this Assignment
and Amendment Agreement for registration with (i) the Public Registry of Property and Commerce of the Pledgor’s domicile and (ii) the Registry of Guaranties on Movable Assets, within fifteen (15) calendar days following the date
hereof (with such extensions as the Substitute Pledgee may grant in its sole discretion); and 
 (5) shall obtain
and deliver to the Substitute Pledgee written confirmation, in terms satisfactory to the Substitute Pledgee, of the registration of this Assignment and Amendment Agreement with (i) the Registry of Guaranties on Movable Assets, within twenty
(20) Business Days from the date of its filing before such registry (with such extensions as the Substitute Pledgee may grant in its discretion), and (ii) the Public Registry of Property and Commerce, within one hundred and twenty
(120) calendar days from the date of its filing before such registry (with such extensions as the Substitute Pledgee may grant in its sole discretion). 
 (b) The Pledgors shall pay any registration fees, taxes, notary public fees and any related fees, costs and expenses incurred in connection with the formalization and registration of this Assignment and
Amendment Agreement as aforesaid. The Substitute Pledgee and the Substituted Pledgee shall in no event be liable for any of such fees, taxes costs or expenses. The rejection or delay by any registry of the registration of this Assignment and
Amendment Agreement shall in no way affect the obligations of the Pledgors under this Clause. 
 (c) Each Pledgor grants to the
Substitute Pledgee, an irrevocable power-of-attorney in terms of Article 2596 of the Federal Civil Code and its correlatives for the other States of Mexico and the Federal District, in order to allow the Substitute Pledgee to exercise the voting
rights over the Pledged Shares described in Clause Third of the Stock Pledge Agreement in the terms provided in Exhibit B to the Stock Pledge Agreement, which original notarized power-of-attorney is delivered to the Substitute Pledgee on the
date hereof. The granting of such power of attorney shall be noted in the stock registry book (libro de registro de acciones) of the Company. 

  
 6 

 THIRD. Delivery of Documents. 

(a) As a consequence of the assignment of the Substituted Pledgee’s rights and obligations in favor of the Substitute Pledgee, the
Substituted Pledgee hereby delivers to the Pledgors: 
 (1) the original share certificates evidencing the
Pledged Shares, respectively; 
 (2) the original notarized copy of the entry in the stock registry (libro de
registro de acciones) of the Company, containing a notation duly certified by the Secretary of the Board of Directors and a notary public stating that the Pledged Shares were pledged in favor of the Substituted Pledgee; and 

(3) the original of the first original copy (primer testimonio) of the public deed containing the power of attorney
granted by the Pledgors in favor of the Substituted Pledgee to exercise the voting rights with respect to the Pledged Shares. 

(b) The Substituted Pledgee hereby delivers to the Substitute Pledgee, the original of the first original copy (primer testimonio)
of the public deed containing the Stock Pledge Agreement duly registered at the Public Registry of Property and Commerce and the Registry of Guaranties on Movable Assets. 
 (c) The Parties further agree to execute any and all documents reasonably required to carry out the registrations described in Clause Second herein, including but not limited, the execution by the
Substituted Pledgee and the Substitute Pledgee of the documents reasonably required for the registration of this Assignment and Amendment Agreement as described in Clause Second. 
 FOURTH. Ratification of the Terms of the Stock Pledge Agreement. 

The Parties agree and confirm that the only amendments to the Stock Pledge Agreement are those set forth in this Assignment and Amendment
Agreement. The Pledgors and the Substitute Pledgee hereby confirm and ratify all of the terms and conditions of the Stock Pledge Agreement which are, and continue to be, in full force and effect. 

FIFTH. No Novation. 
 The execution of this Assignment and Amendment Agreement shall not constitute (i) a novation (novación) of the obligations of the Pledgors and the Substitute Pledgee under the Stock
Pledge Agreement or (ii) a novation (novación), modification or payment of the Obligations. 
 SIXTH. Notices.

  
 7 

 (a) All notices and other communications related to this Agreement, shall be in writing, in
the English and Spanish languages, and shall be delivered or sent to the domiciles or facsimile numbers set forth below, or in any other domicile or facsimile number designated by each party or its representatives by written notice to the other
party. Such notices and communications shall be delivered or sent (i) by hand, (ii) by courier, or (iii) by facsimile. The parties for such effects designate the following domiciles: 

The Pledgors and the Company: 
 Montes
Urales No. 625 
 Col. Lomas de Chapultepec 
 11000, México D.F. 
 Facsimile: (5255) 9178 5600 ext. 22179 

Telephone: (5255) 9178 5647 
 Attention:
Legal Department (Departamento Jurídico) 
 The Substituted Pledgee: 

Scotiabank Inverlat, S.A., Institución de Banca Múltiple, Grupo Financiero Scotiabank Inverlat 

Blvd. Manuel Ávila Camacho No. 1, 2nd floor 
 Col. Lomas de Chapultepec, P.C. 11009 
 México, D.F. 

Telephone: 5255 52292369 
 Facsimile: 5255
52292010 
 Attention: Marcela Castillo Nogueron
 Email: mcastillon@scotiabank.com.mx 
 cc: The Bank of Nova Scotia

720 King Street West, 2nd Floor Toronto, Ontario Canada M5V2T3 
 GWS-Agency & U.K. Loan Operations
 Telephone: 416 6494006 

Facsimile: 416 3505701 
 Attention: Russell
Tan 
 Email: russell_tan@scotiacapital.com 
 The Substitute Pledgee: 
 JPMorgan Chase Bank, N.A. 

Loan and Agency Services Group 

1111 Fannin, Floor 10 
 Houston, Texas
77002 
 Telephone: (713) 750 1882 / (713) 427 6530 

  
 8 

 
Facsimile: (713) 750 2938 
 Attention: Colton Rainey/Jide Williams 

cc: JPMorgan Chase Bank, N.A. 
 383 Madison
Avenue 
 New York, New York 10179 

Facsimile: (212) 270-5100 
 Attention:
Matthew Massie 
 (b) Any Party may change its domicile to receive notices pursuant to this Assignment and Agreement by giving
written notice not less than five (5) Business Days prior to the date on which such change shall become effective in accordance with the provisions of this Clause. 
 (c) Any notice, if mailed and properly addressed with postage prepaid or if properly addressed and sent by pre-paid courier service, shall be deemed given when received; any notice, if transmitted by
facsimile, shall be deemed given when the confirmation of transmission thereof is received by the transmitter; provided that, as long as it is authorized by applicable law, the impossibility of delivering notices due to changes in the
addresses that have not been notified to the other Party hereto, or the refusal of any party to accept any notice, shall be considered received on the date of such delivery to the prior address or refusal to accept a notice. 

SEVENTH. Governing Law and Jurisdiction. 
 This Assignment and Amendment Agreement shall be governed by and construed in accordance with the federal laws of Mexico. For the interpretation, construction, performance and enforcement of this
Assignment and Amendment Agreement, the Parties irrevocably submit to the jurisdiction of the federal courts located in the Federal District, and waive any right to any jurisdiction to which they may be entitled by reason of their respective present
or future domicile. 
 [signature pages follow] 

  
 9 

 IN WITNESS WHEREOF, the Parties execute this Assignment and Amendment Agreement as of
the date first above written. 
  

	
	 PLEDGOR
  

HIGHSTAR HARBOR HOLDINGS

MEXICO, S. DE R.L. de C.V.

 
 /s/ Rodrigo
Flores León

	  

	 BY: Rodrigo Flores León

TITLE: Attorney-in-Fact

 
 PLEDGOR

 
 MTC PUERTA
MÉXICO, S. de R.L. de C.V.
  
 /s/ Rodrigo Flores León

	  
 BY: Rodrigo Flores León
 TITLE:
Attorney-in-Fact

	  
 COMPANY

 
 VAMOS A
MÉXICO, S.A. de C.V.
  
 /s/ Rodrigo Flores León

	  
 BY: Rodrigo Flores León
 TITLE:
Attorney-in-Fact

  
 10 

 THE SUBSTITUTED PLEDGEE 

SCOTIABANK INVERLAT, S.A., INSTITUCIÓN DE 
 BANCA MÚLTIPLE, GRUPO FINANCIERO 
 SCOTIABANK INVERLAT, 

as former collateral agent, acting on its own behalf and 
 on behalf and for the benefit of the Secured Parties 
  

	
	 /s/ Oscar Pedro Alvarado Estevez

	 BY: Oscar Pedro Alvarado Estevez
 TITLE: Attorney-in-Fact
  

/s/ Edgar Luises Castro
 BY: Edgar Luises Castro
 TITLE: Attorney-in-Fact

	  
 THE SUBSTITUTE PLEDGEE

 
 JPMORGAN CHASE BANK, N.A.,

as Collateral Agent, acting on its own behalf and
 on behalf and for the benefit of the Secured Parties
  

/s/ Eduardo Gras Gómez Palacio

BY: Eduardo Gras Gómez Palacio
 TITLE: Attorney-in-Fact

  
 11 

 Exhibit “A” 

Stock Pledge Agreement (without exhibits) 

  
 12 

 Exhibit “B” 

Credit Agreement 

  
 13

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