Document:

Fourth Amendment to Credit Agreement

 Exhibit 10.1 
 FOURTH AMENDMENT TO CREDIT AGREEMENT 
 THIS FOURTH AMENDMENT TO
CREDIT AGREEMENT (this “Amendment”), dated as of July     , 2011, is entered into by and among INFUSYSTEM HOLDINGS, INC., a Delaware corporation (“Holdings”), INFUSYSTEM, INC., a California
corporation (“InfuSystem”) and FIRST BIOMEDICAL, INC., a Kansas corporation (“FBI” and together with Holdings and InfuSystem, the “Borrowers” and each individually a “Borrower”),
BANK OF AMERICA, N.A. in its capacity as an Administrative Agent and as a Lender (“Agent”) and the other lenders party hereto (collectively, together with the Agent in its capacity as a Lender, the “Lenders”).

 WHEREAS, the Borrowers and the Agent and the Lenders are parties to that certain Credit Agreement dated as of
June 15, 2010 as amended by (i) that certain First Amendment to Credit Agreement dated as of January 27, 2011, (ii) that certain Second Amendment to Credit Agreement dated as of April 1, 2011 and (iii) that certain
Third Amendment to Credit Agreement dated as of May 20, 2011 (the “Existing Credit Agreement” and as such Existing Credit Agreement is amended by this Amendment, the “Amended Credit Agreement”); 

WHEREAS, the Borrowers have requested that the Agent and the Lenders modify the Existing Credit Agreement in certain respects and
the Agent and Lenders have agreed to amend the terms of the Existing Credit Agreement on the terms and conditions set forth in this Amendment. 
 NOW, THEREFORE, in consideration of the premises and mutual agreements herein contained, the parties hereto agree as follows. 

SECTION 1 

DEFINED TERMS 
 Capitalized terms used but not defined herein shall have the meanings ascribed to such terms in the Existing Credit Agreement. 
 SECTION 2 
 AMENDMENTS TO EXISTING CREDIT AGREEMENT 

2.1 Amendments to Definition Section. Section 1.01 of the Existing Credit Agreement is hereby amended by adding the
following definitions in proper alphabetical order: 
 “Bank of America Equipment Loan” means a
term loan facility in a maximum aggregate amount up to $3,000,000 which Bank of America may, in its sole discretion, agree to make available to IFC pursuant to certain credit agreements, promissory notes and other certificates and instruments which
are in a form acceptable to Bank of America in its sole discretion. For the avoidance of doubt, each Borrower acknowledges that Bank of America is under no obligation to make the Bank of America Equipment Loan available to IFC or any Borrower and no
Bank of America Equipment Loan will be made unless and until Bank of 

 
America and its counsel complete their due diligence investigation, including, without limitation, a full business, credit, and legal analysis of the proposed Bank of America Equipment Loan and
such due diligence is satisfactory to Bank of America in its sole discretion. 
 2.2 Amendments to Permitted Lien
Section. Section 7.01 of the Existing Credit Agreement is hereby amended by adding the following subsection (n) in proper alphabetical order: 
 “(n) Liens granted by IFC securing Indebtedness permitted under Section 7.03(i) hereof; provided that such Liens do not at any time encumber any property other than the Equipment (and all
proceeds and products thereof) of IFC.” 
 2.3 Amendments to Permitted Indebtedness Covenant. 

(a) Amendment to Capital Expenditure Limitation. Subsection (f) of Section 7.03 of the Existing Credit Agreement is
hereby amended by deleting the subsection in its entirety and substituting the following therefor: 
 “(f)
Indebtedness in respect of Capital Leases, Synthetic Lease Obligations and purchase money obligations for fixed or capital assets within the limitations set forth in Section 7.01(i); provided, however, that: the aggregate
amount of all such Indebtedness attributable to the Borrowers and their Subsidiaries (which shall include Indebtedness of the Borrowers and their Subsidiaries disclosed on Schedule 7.03 to the extent such amounts remain outstanding and
constitute Capital Leases, Synthetic Lease Obligations or purchase money obligations for fixed or capital assets) at any one time outstanding shall not exceed the following amounts during the following times: 

 

					
	 Fiscal Year
	  	Maximum Aggregate
Amount	 
		
	 during Fiscal Year 2010
	  	$	4,000,000	  
		
	 during Fiscal Year 2011
	  	$	5,400,000	  
		
	 during Fiscal Year 2012
	  	$	6,800,000	  
		
	 During Fiscal Year 2013 and at all times thereafter
	  	$	8,000,000	  

 ; and” 

  
 -2-

 (b) Addition of Bank of America Equipment Loan. Section 7.03 of the Existing
Credit Agreement is hereby amended by adding the following subsection (i) in proper alphabetical order: 

“(i) Indebtedness of IFC in respect of the Bank of America Equipment Loan not to exceed $3,000,000 in the aggregate
at any one time outstanding.” 
 SECTION 3 
 REPRESENTATIONS AND WARRANTIES 
 Each Borrower hereby represents and
warrants to the Agent and Lenders that: 
 3.1 Due Authorization, etc. The execution and delivery by it of this
Amendment and the performance by it of its obligations under the Existing Credit Agreement are duly authorized by all necessary corporate action, do not require any filing or registration with or approval or consent of any governmental agency or
authority, do not and will not conflict with, result in any violation of or constitute any default under any provision of its certificate or articles of incorporation, as applicable, or by-laws or those of any of its Subsidiaries or any material
agreement or other document binding upon or applicable to it or any of its Subsidiaries (or any of their respective properties) or any material law or governmental regulation or court decree or order applicable to it or any of its Subsidiaries, and
will not result in or require the creation or imposition of any Lien in any of its properties or the properties of any of its Subsidiaries pursuant to the provisions of any agreement binding upon or applicable to it or any of its Subsidiaries.

 3.2 Validity. This Amendment has been duly executed and delivered by such Borrower and, together with the
Existing Credit Agreement, are the legal, valid and binding obligations of such Borrower, enforceable against such Borrower in accordance with their respective terms subject, as to enforcement only, to bankruptcy, insolvency, reorganization,
moratorium or similar laws affecting the enforceability of the rights of creditors generally. 
 3.3 Representations and
Warranties. The representations and warranties contained in Article V of the Existing Credit Agreement are true and correct on the date of this Amendment in all material respects (except for those that are qualified by
“materiality” or “Material Adverse Effect”, in which case such representations and warranties shall have been true and correct in all respects), except to the extent (a) that such representations and warranties solely relate
to an earlier date or (b) have been changed by circumstances permitted by the Existing Credit Agreement. 

  
 -3-

 SECTION 4 
 CONDITIONS PRECEDENT 
 The amendment to the Existing Credit
Agreement set forth in Section 2 of this Amendment shall become effective upon satisfaction of all of the following conditions precedent: 
 4.1 Receipt of Documents. Agent shall have received all of the following, each in form and substance satisfactory to Agent: 

(a) Amendment. A counterpart original of this Amendment duly executed by Borrowers. 

(b) Secretary’s Certificate. A certificate of the secretary of each Borrower dated the date hereof or such
other date as shall be acceptable to Agent, substantially in the form of Exhibit A to this Amendment. 
 4.2 Other
Conditions. No Event of Default or Default shall have occurred and be continuing. 
 SECTION 5 

MISCELLANEOUS 
 5.1 Warranties and Absence of Defaults. In order to induce the Agent and Lenders to enter into this Amendment, Borrowers hereby warrant to the Agent and each Lender, as of the date of the
actual execution of this Amendment (a) no Event of Default or Default has occurred which is continuing as of such date and (b) the representations and warranties in Section 3 of this Amendment are true and correct. 

5.2 Documents Remain in Effect. Except as amended and modified by this Amendment, the Existing Credit Agreement and the
other documents executed pursuant to the Existing Credit Agreement remain in full force and effect and each Borrower hereby ratifies, adopts and confirms its representations, warranties, agreements and covenants contained in, and obligations and
liabilities under, the Existing Credit Agreement and the other documents executed pursuant to the Existing Credit Agreement. 

5.3 Reference to Loan Agreement. On and after the effective date of this Amendment, each reference in the Existing Credit
Agreement to “this Agreement,” “hereunder,” “hereof,” “herein” or words of like import, and each reference to the “Loan Agreement” in any Loan Documents, or other agreements, documents or other
instruments executed and delivered pursuant to the Existing Credit Agreement, shall mean and be a reference to the Amended Credit Agreement. 
 5.4 Headings. Headings used in this Amendment are for convenience of reference only, and shall not affect the construction of this Amendment. 

5.5 Counterparts. This Amendment may be executed in any number of counterparts, and by the parties hereto on the same or
separate counterparts, and each such counterpart, when executed and delivered, shall be deemed to be an original, but all such counterparts shall together constitute but one and the same Amendment. 

  
 -4-

 5.6 Expenses. Borrowers agree, jointly and severally, to pay on demand all
reasonable out-of-pocket costs and expenses of Agent (including reasonable fees, charges and disbursements of Agent’s attorneys) in connection with the preparation, negotiation, execution, delivery and administration of this Amendment and all
other instruments or documents provided for herein or delivered or to be delivered hereunder or in connection herewith. In addition, Borrowers agree, jointly and severally, to pay, and save Agent and each Lender harmless from all liability for, any
stamp or other taxes which may be payable in connection with the execution or delivery of this Amendment, the borrowings under the Amended Credit Agreement, and the execution and delivery of any instruments or documents provided for herein or
delivered or to be delivered hereunder or in connection herewith, in each case to the same extent required under the Credit Agreement. All obligations provided in this Section 6.6 shall survive any termination of this Amendment or the Amended
Credit Agreement. 
 5.7 Governing Law. This Amendment shall be a contract made under and governed by the internal
laws of the State of Illinois. Wherever possible, each provision of this Amendment shall be interpreted in such manner as to be effective and valid under applicable laws, but if any provision of this Amendment shall be prohibited by or invalid under
such laws, such provisions shall be ineffective only to the extent of such prohibition or invalidity, without invalidating the remainder of such provision or the remaining provisions of this Amendment. 

5.8 Successors. This Amendment shall be binding upon Borrowers, Agent, each Lender and their respective successors and
assigns, and shall inure to the benefit of Borrowers, Agent, each Lender and the successors and assigns of the Agent and such Lender. 
 [signature page attached] 

  
 -5-

 IN WITNESS WHEREOF, the parties hereto have caused this Amendment to be executed by
their respective officers thereunto duly authorized and delivered at Chicago, Illinois as of the date first above written. 

BORROWERS: 
  

									
	INFUSYSTEM HOLDINGS, INC.	 		 	FIRST BIOMEDICAL, INC.
					
	By:	 	  
	 		 	By:	 	  

	Name:	 	 James Froisland
	 		 	Name:	 	 James Froisland

	Title:	 	 CFO
	 		 	Title:	 	 CFO

				
	INFUSYSTEM, INC.	 		 		 	
					
	By:	 	  
	 		 		 	
	Name:	 	 James Froisland
	 		 		 	
	Title:	 	 CFO
	 		 		 	
				
	AGENTS AND LENDERS:	 		 		 	
				
	 BANK OF AMERICA, N.A., in its
 capacity as Administrative Agent,
	 		 		 	
					
	By:	 	  
	 		 		 	
	Name:	 	  
	 		 		 	
	Title:	 	  
	 		 		 	
				
	 BANK OF AMERICA, N.A., in its
 capacity as a Lender
	 		 		 	
					
	By:	 	  
	 		 		 	
	Name:	 	 Sophia Love
	 		 		 	
	Title:	 	 Senior Vice President
	 		 		 	
				
	 KEYBANK NATIONAL ASSOCIATION, in its
 capacity as a Lender
	 		 		 	
					
	By:	 	  
	 		 		 	
	Name:	 	  
	 		 		 	
	Title:	 	  
	 		 		 	

 Fourth Amendment to Credit Agreement 

 Exhibit A 

Secretary’s Certificate 
 [see attached] 

 SECRETARY’S CERTIFICATE 

 

	To:	Bank of America, N.A., as administrative agent 

 This Certificate is being furnished pursuant to Section 4.1(b) of that certain Fourth Amendment to Credit Agreement (the “Amendment”), dated as of July     , 2011
by and among INFUSYSTEM HOLDINGS, INC., a Delaware corporation (“Holdings”), INFUSYSTEM, INC., a California corporation (“InfuSystem”) and FIRST BIOMEDICAL, INC., a Kansas corporation (“FBI” and
together with Holdings and InfuSystem, the “Borrowers” and each individually a “Borrower”), BANK OF AMERICA, N.A. in its capacity as an Administrative Agent and as a Lender (“Agent”) and the other
lenders party thereto (collectively, together with the Agent in its capacity as a Lender, the “Lenders”), which amends that certain Credit Agreement dated as of June 15, 2010 as amended by (i) that certain First Amendment
to Credit Agreement dated as of January 27, 2011, (ii) that certain Second Amendment to Credit Agreement dated as of April 1, 2011 and (iii) that certain Third Amendment to Credit Agreement dated as of May 20, 2011 (the
“Existing Credit Agreement” and as the Existing Credit Agreement is amended and modified by the Amendment, the “Amended Credit Agreement”). Capitalized terms used but not defined herein shall have the meanings
ascribed to such terms in the Amendment. 
 The undersigned, Secretary of each Borrower, hereby certifies on behalf of such
Borrower, that: 
 1. Such Borrower has adopted resolutions sufficient to authorize the proper officers of such Borrower to
execute and deliver the Amendment in the name and on behalf of such Borrower, and each of them is authorized to cause such Borrower to borrow funds under the Amended Credit Agreement. Such resolutions have not been rescinded or amended and are in
full force and effect on and as of the date hereof. 
 2. Other than the resolutions referred to in clause 1 above, there is no
corporate action, consent or governmental approval required for the execution, delivery and performance by such Borrower of the Amendment or any other document, instrument or agreement contemplated by the Amendment. 

3. The following named persons were duly elected to, and are validly acting in, the offices listed opposite each of their names and are
authorized to execute on behalf of and in the name of each Borrower the Amendment and any and all other agreements, instruments or documents contemplated by the Amendment, and their respective signatures set forth below are their genuine signatures.

  

					
	 Name
	  	 Title
	  	 Signature

			
	James Froisland	  	Chief Financial Officer	  	  

			
	  
	  	Secretary	  	  

 4. I know of no proceeding for the dissolution or liquidation of any Borrower or threatening
the existence of any Borrower. 
 5. There have been no amendments to the Articles or Certificates of Incorporation or to the
By-laws of any Borrower since the date of the certified copies thereof provided to you in connection with the execution of the Existing Credit Agreement. 
 6. Agent and the Lenders may rely on this Certificate until advised by a like certificate of any changes herein. 
 [signature page attached] 

 IN WITNESS WHEREOF, I have executed this Certificate on July     , 2011. 

 

			
	By:	 	  

	Name:	 	  

	Title:	 	 Secretary

 I, the undersigned, Chief Executive Officer of each Borrower, DO HEREBY CERTIFY that
                                         is the
duly elected and qualified Secretary of such Borrower, and the signature above is a genuine signature. 
 WITNESS my hand this
     day of July, 2011. 
  

			
	By:	 	  

	Name:	 	  

	Title:	 	Chief Executive OfficerForm of 6.500% Bonds due 2041

 Exhibit 4.10 
 The issue of this Bond was approved by the Ministry of Finance and Public Credit of Mexico on May 25, 2011 pursuant to Official Communication No. 305-I.2.1-150 and has been given Registration
No. 34-2011-F. 
 UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY TO
THE ISSUER OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT, AND ANY CERTIFICATE ISSUED IN EXCHANGE FOR THIS CERTIFICATE OR ANY PORTION HEREOF IS REGISTERED IN THE NAME OF CEDE & CO. OR IN SUCH OTHER NAME AS IS REQUESTED BY AN
AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY (AND ANY PAYMENT IS MADE TO CEDE & CO. OR TO SUCH OTHER ENTITY AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF CEDE & CO.), ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR
VALUE OR OTHERWISE BY OR TO ANY PERSON OTHER THAN THE DEPOSITORY TRUST COMPANY OR A NOMINEE THEREOF IS WRONGFUL INASMUCH AS THE REGISTERED OWNER HEREOF, CEDE & CO., HAS AN INTEREST HEREIN. 

THIS BOND IS A U.S. GLOBAL SECURITY WITHIN THE MEANING OF THE INDENTURE REFERRED TO HEREINAFTER. THIS BOND MAY NOT BE EXCHANGED, IN WHOLE
OR IN PART, FOR A BOND REGISTERED IN THE NAME OF ANY PERSON OTHER THAN THE DEPOSITORY TRUST COMPANY OR A NOMINEE THEREOF EXCEPT IN THE LIMITED CIRCUMSTANCES SET FORTH IN SECTION 3.05(a) OF THE INDENTURE. 

 PETRÓLEOS MEXICANOS 

(A Decentralized Public Entity of the Federal Government of the United Mexican States) 

6.500% Bonds due 2041 
 Jointly and Severally Guaranteed by 
 PEMEX-EXPLORACIÓN Y
PRODUCCIÓN, PEMEX-REFINACIÓN AND 
 PEMEX-GAS Y PETROQUÍMICA BÁSICA 

REGISTERED 
 NO. R-1 

The following summary of terms is subject to the information set forth on the reverse hereof. 

 

			
	PRINCIPAL AMOUNT:	  	U.S. $—
		
	SPECIFIED CURRENCY:	  	U.S. dollars (“U.S. $” or “$”)
		
	STATED MATURITY:	  	June 2, 2041
		
	ISSUE DATE:	  	—, 2011
		
	CUSIP NO.:	  	—
		
	INTEREST PAYMENT	  	
		
	DATES:	  	June 2 and December 2 of each year, commencing on December 2, 2011
		
	PRINCIPAL PAYING AGENT AND TRANSFER AGENT:	  	Deutsche Bank Trust Company Americas, New York
		
	PAYING AGENTS AND TRANSFER AGENTS:	  	Deutsche Bank AG, London Branch Deutsche Bank Luxembourg S.A.

 Petróleos Mexicanos (herein called “Petróleos Mexicanos” or the
“Issuer,” which terms include any successor entity under the Indenture hereinafter referred to), a decentralized public entity of the Federal Government (the “Mexican Government”) of the United Mexican States
(“Mexico”), for value received, hereby promises, in accordance with and subject to the provisions set forth on the face and reverse hereof, to pay to Cede & Co., or registered assigns, at the Stated Maturity specified above or on
such earlier date as the same may become payable in accordance with the terms hereof, the principal amount specified above in U.S. dollars or such other redemption amount as may be specified herein, and to pay in arrears on the dates specified
herein interest on such principal amount at the rate or rates specified herein, until the principal amount hereof is paid or made available for payment. 

  
 F-2

 Unless defined herein, capitalized terms used herein shall have the meanings assigned to
them on the reverse hereof and in the indenture dated as of January 27, 2009, between Petróleos Mexicanos, as the Issuer, and Deutsche Bank Trust Company Americas, as trustee (the “Trustee,” which expression shall include any
successor to Deutsche Bank Trust Company Americas, in its capacity as such), as supplemented by (i) the First Supplemental Indenture, dated as of June 2, 2009, among the Issuer, the Trustee and Deutsche Bank AG, London Branch as
International Paying Agent, and (ii) the Second Supplemental Indenture, dated as of October 13, 2009, among the Issuer, the Trustee, Credit Suisse, as Principal Swiss Paying Agent and Authenticating Agent, and BNP Paribas (Suisse) S.A., as
Swiss Paying Agent (as supplemented, the “Indenture”). 
 Reference is hereby made to the further provisions of this
Bond set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. 
 Unless the certificate of authentication hereon has been executed by the Trustee by manual signature, this Bond shall not be entitled to any benefit under the Indenture or be valid or obligatory for any
purpose. 

  
 F-3

 IN WITNESS WHEREOF, the Issuer has caused this Bond to be duly executed. 

Dated: —, 2011 

 

					
	PETRÓLEOS MEXICANOS
		
	By:	 	 
		 	Name:	 	Arturo Delpech del Ángel
		 	Title:	 	 Associate Managing Director of
 Finance

 CERTIFICATE OF AUTHENTICATION 

This is one of the series of Securities designated herein issued under the within-mentioned Indenture. 

Dated: —, 2011 

 

			
	 DEUTSCHE BANK TRUST COMPANY AMERICAS
 as Trustee

		
	By:	 	 
		 	Authorized Signatory

  
 F-4

 REVERSE OF BOND 
 1. This Bond is one of a duly authorized series of Securities of Petróleos Mexicanos (the “Issuer”) designated as its U.S. $1,250,000,000 6.500% Bonds due 2041 (the
“Bonds”), issued and to be issued in accordance with an indenture dated as of January 27, 2009, between the Issuer and Deutsche Bank Trust Company Americas, as trustee (herein called the “Trustee,” which term includes any
successor trustee under the Indenture), as supplemented by (i) the First Supplemental Indenture, dated as of June 2, 2009, among the Issuer, the Trustee and Deutsche Bank AG, London Branch as International Paying Agent, and (ii) the
Second Supplemental Indenture, dated as of October 13, 2009, among the Issuer, the Trustee, Credit Suisse, as Principal Swiss Paying Agent and Authenticating Agent, and BNP Paribas (Suisse) S.A., as Swiss Paying Agent (as supplemented, the
“Indenture”), copies of which Indenture are on file and available for inspection at the Corporate Trust Office of the Trustee in the Borough of Manhattan, The City of New York and, so long as the Bonds are listed on the Luxembourg
Stock Exchange and such Exchange shall so require, at the office of the Paying Agent in Luxembourg. Reference is hereby made to the Indenture for a statement of the respective rights, limitations of rights, duties and immunities thereunder of the
Issuer and the Holders of the Bonds and of the terms upon which the Bonds are, and are to be, authenticated and delivered. The Bonds are initially limited to an aggregate initial principal amount of U.S. $1,250,000,000, subject to increase as
provided in Paragraph 10 below. Capitalized terms not otherwise defined herein or on the face of this Bond shall have the meanings assigned to them in the Indenture. 
 The Bonds are direct, unsecured and unsubordinated Public External Indebtedness (as defined in Paragraph 8 below) of the Issuer for money borrowed and will at all times rank pari passu with each
other. The payment obligations of the Issuer under the Bonds will, except as may be provided by applicable law and subject to Section 10.06 of the Indenture, at all times rank pari passu with all other present and future unsecured and
unsubordinated Public External Indebtedness for money borrowed of the Issuer. The Bonds are not obligations of, or guaranteed by, the United Mexican States (“Mexico”). 

The Issuer’s payment obligations under the Bonds and the Indenture will have the benefit of unconditional, joint and several
guaranties (the “Guaranties”) as to payment of principal, interest and any other amounts payable by the Issuer under the Bonds from each of Pemex-Exploración y Producción, Pemex-Refinación and Pemex-Gas y
Petroquímica Básica (each, a “Guarantor” and, together, the “Guarantors”), pursuant to a guaranty agreement, dated July 29, 1996, among the Issuer and the Guarantors (the “Guaranty Agreement”). The
Issuer has designated each of the Indenture and the Bonds as obligations of the Issuer entitled to the benefits of the Guaranty Agreement, pursuant to certificates of designation, each dated January 27, 2009, January 14,
2010, December 22, 2010 and June 2, 2011, respectively (the “Certificates of Designation”). 
 The
Bonds are denominated in U.S. dollars. Payments on the Bonds will be made in U.S. dollars. The Bonds are issuable only in fully registered form, without interest coupons. The Bonds are issuable in authorized denominations of U.S. $10,000 and
integral multiples of U.S. $1,000 in excess thereof. 

 2. (a) The Bonds will bear interest from June 2, 2011 or from the most recent
Interest Payment Date to which interest has been paid or duly provided for, at the rate of 6.500% per annum, until the principal hereof has been paid or duly made available for payment. The interest on this Bond shall be payable in arrears on
each Interest Payment Date specified on the face hereof, and shall be computed on the basis of a 360-day year consisting of twelve 30-day months. Any payment on this Bond due on any day which is not a Business Day in The City of New York or the
place of payment need not be made on such day, but may be made on the next succeeding Business Day with the same force and effect as if made on the due date, and no interest shall accrue for the period from and after such due date. “Business
Day,” as used herein with respect to any particular location, means each Monday, Tuesday, Wednesday, Thursday and Friday which is not a day on which banking institutions in such location are authorized or obligated by law to close in such
location. 
 (b) The interest so payable, and punctually paid or duly provided for, on any Interest Payment Date will be paid to
the person in whose name this Bond (or one or more predecessor Bonds) is registered at the close of business on the 15th day (whether or not a Business Day) (the “Regular Record Date”) next preceding such Interest Payment Date;
provided that interest payable at Stated Maturity will be payable to the person to whom principal shall be payable; and provided, further, that if this Bond is a Global Security, any payment of interest on this Bond shall be
made to the applicable Depositary or its nominee, as the registered owner hereof. Any such interest not so punctually paid or duly provided for will forthwith cease to be payable to the Holder on such Regular Record Date and may either be paid to
the person in whose name this Bond (or one or more predecessor Bonds) is registered at the close of business on a special record date for the payment of such defaulted interest to be fixed by the Trustee, notice whereof shall be given to Holders of
Bonds not less than 10 days prior to such special record date, or be paid at any time in any other lawful manner not inconsistent with the requirements of any securities exchange on which the Bonds may be listed, and upon such notice as may be
required by such exchange. 
 (c) Payment of principal (and premium, if any) and any interest due with respect to the Bonds at
Stated Maturity will be made in immediately available funds upon surrender of such Bonds at the corporate trust office of the Trustee in the Borough of Manhattan, The City of New York, or at the specified office of any other Paying Agent,
provided that the Bond is presented to the Paying Agent in time for the Paying Agent to make such payments in such funds in accordance with its normal procedures. Payments of principal (and premium, if any) and any interest in respect of this
Bond to be made other than at Stated Maturity or upon redemption will be made by check mailed on or before the due date for such payments to the address of the persons entitled thereto as they appear in the Security Register; provided that
(i) the applicable Depositary, as Holder of the Global Securities, shall be entitled to receive payments of interest by wire transfer of immediately available funds and (ii) a Holder of U.S. $10,000,000 in aggregate principal or face
amount of Bonds having the same Interest Payment Date shall be entitled to receive payments of interest by wire transfer to an account maintained by such Holder at a bank located in the United States as may have been appropriately designated by such
person to the Paying Agent in writing no later than the relevant Regular Record Date. Unless such designation is revoked, any such designation made by such Holder with respect to such Bond shall remain in effect with respect to any further payments
with respect to such Bond payable to such Holder. 

  
 R-2

 3. (a) The Issuer shall maintain in the Borough of Manhattan, The City of New York, an
office or agency where Bonds may be surrendered for registration of transfer or exchange. The Issuer has initially appointed the Corporate Trust Office of the Trustee as its agent in the Borough of Manhattan, The City of New York, for such purpose
and has agreed to cause to be kept at such office a register in which, subject to such reasonable regulations as it may prescribe, the Issuer will provide for the registration of Bonds and registration of transfers of Bonds. The Issuer reserves the
right to vary or terminate the appointment of the Trustee as security registrar or of any Transfer Agent or to appoint additional or other registrars or Transfer Agents or to approve any change in the office through which any security registrar or
any Transfer Agent acts, provided that there will at all times be a security registrar in the Borough of Manhattan, The City of New York and, so long as the Bonds are listed on the Luxembourg Stock Exchange and such Exchange shall so require,
a Transfer Agent in Luxembourg. 
 (b) The transfer or exchange of a Bond is registrable on the aforementioned register upon
surrender of such Bond at the Corporate Trust Office of the Trustee or any Transfer Agent duly endorsed by, or accompanied by a written instrument of transfer in form satisfactory to the Issuer and the Trustee duly executed by the Holder thereof or
his attorney duly authorized in writing. Upon such surrender of a Bond for registration of transfer, the Issuer shall execute one or more new Bonds of any authorized denominations and of a like form, tenor and terms and a like aggregate principal
amount, and the Trustee shall authenticate and deliver in the name of the designated transferee or transferees, such new Bonds, dated the date of authentication thereof. At the option of the Holder upon request confirmed in writing, Bonds may
be exchanged for Bonds of any authorized denominations and of a like form, tenor and terms and a like aggregate principal amount upon surrender of the Bonds to be exchanged at the office of any Transfer Agent or at the corporate trust office of the
Trustee. Whenever any Bonds are so surrendered for exchange, the Issuer shall execute the Bonds which the Holder making the exchange is entitled to receive, and the Trustee shall authenticate and deliver such Bonds. 

(c) Any registration of transfer or exchange will be effected upon the Transfer Agent or the Trustee, as the case may be, being satisfied
with the documents of title and identity of the person making the request and subject to such reasonable regulations as the Issuer may from time to time agree with any Transfer Agents and the Trustee. 

(d) In the event of a redemption of Bonds in part (if permitted by the provisions hereof), the Issuer shall not be required (i) to
register the transfer of or exchange any Bond during a period beginning at the opening of business 15 days before, and continuing until, the date on which notice is given identifying the Bonds to be redeemed, or (ii) to register the transfer of
or exchange any Bond, or portion thereof, called for redemption. 
 (e) All Bonds issued upon any registration of transfer or
exchange of Bonds shall be the valid obligations of the Issuer, evidencing the same debt, and entitled to the same benefits, as the Bonds surrendered upon such registration of transfer or exchange. No service charge shall be made for any
registration of transfer or exchange, but the Issuer may require payment of a sum sufficient to cover any stamp tax or other governmental charge payable in connection therewith, other than an exchange in connection with a partial redemption of a
Bond not involving any registration of a transfer. 

  
 R-3

 Prior to due presentment of this Bond for registration of transfer, the Issuer, each
Guarantor, the Trustee and any agent of the Issuer, any Guarantor or the Trustee may treat the person in whose name this Bond is registered as the owner hereof for all purposes, whether or not this Bond be overdue, and neither the Issuer, any
Guarantor, the Trustee nor any such agent shall be affected by any notice to the contrary. 
 4. The Issuer shall pay to the
Trustee at its principal office in the Borough of Manhattan, The City of New York, on or prior to 11:00 a.m., New York City time, on each Interest Payment Date, any Redemption Date and at the Stated Maturity of the Bonds, in such amounts sufficient
(with any amounts then held by the Trustee and available for the purpose) to pay the interest on, the Redemption Price of and accrued interest (if the Redemption Date is not an Interest Payment Date) on, and the principal of, the Bonds due and
payable on such Interest Payment Date, Redemption Date or Stated Maturity, as the case may be. The Trustee shall apply the amounts so paid to it to the payment of such interest, Redemption Price and principal in accordance with the terms of the
Bonds. Any monies paid by the Issuer to the Trustee for the payment of the principal, premium (if any) or interest on any Bonds and remaining unclaimed at the end of two years after such principal (or premium, if any) or interest shall have become
due and payable (whether at the Stated Maturity, upon call for redemption or otherwise) shall then be repaid to the Issuer upon its written request, and upon such repayment all liability of the Trustee with respect thereto shall cease, without,
however, limiting in any way any obligation the Issuer may have to pay the principal of (and premium, if any) and interest on each Bond as the same shall become due. Notwithstanding the foregoing, the right of the Holders to receive any payment of
principal of (whether on the Stated Maturity, upon call for redemption or otherwise) or interest on the Bonds will become void at the end of five years after the due date for such payment. 

5. (a) The Issuer will pay all stamp and other duties, if any, which may be imposed by the United States or any political
subdivision thereof or taxing authority of or in the foregoing with respect to the Indenture or the issuance of this Bond. Except as otherwise provided herein, the Issuer shall not be required to make any payment with respect to any tax, assessment
or other governmental charge imposed by any government or any political subdivision or taxing authority thereof or therein. 

(b) The Issuer, or, in the case of a payment by a Guarantor, such Guarantor, will pay to the Holder of this Bond such additional amounts
(“Additional Amounts”) as may be necessary in order that every net payment made by the Issuer or a Guarantor on this Bond after deduction or withholding for or on account of any present or future tax, assessment or other governmental
charge imposed upon or as a result of such payment by Mexico or any political subdivision or taxing authority thereof or therein (“Mexican Withholding Taxes”), will not be less than the amount provided for in this Bond and in the Indenture
to be then due and payable on this Bond. The foregoing obligation to pay Additional Amounts, however, will not apply to (i) any Mexican Withholding Taxes that would not have been imposed or levied on the Holder of this Bond but for the
existence of any present or former connection between such Holder and Mexico or any political subdivision or territory or possession thereof or area subject to its jurisdiction, including, without limitation, such Holder (A) being or having
been a citizen or resident thereof, (B) maintaining or having maintained an office, permanent establishment or branch therein, or (C) being or having been present or engaged in trade or business therein,

  
 R-4

 
except for a connection solely arising from the mere ownership of, or receipt of payment under, this Bond; (ii) except as otherwise provided, any estate, inheritance, gift, sales, transfer
or personal property or similar tax, assessment or other governmental charge; (iii) any Mexican Withholding Taxes that are imposed or levied by reason of the failure by such Holder to comply with any certification, identification, information,
documentation, declaration or other reporting requirement that is required or imposed by a statute, treaty, regulation, general rule or administrative practice as a precondition to exemption from, or reduction in the rate of, the imposition,
withholding or deduction of any Mexican Withholding Taxes; provided that at least 60 days prior to (A) the first payment date with respect to which the Issuer or a Guarantor shall apply this clause (iii) and, (B) in the event
of a change in such certification, identification, information, documentation, declaration or other reporting requirement, the first payment date subsequent to such change, the Issuer or a Guarantor, as the case may be, shall have notified the
Trustee in writing that the Holders of Bonds will be required to provide such certification, identification, information or documentation, declaration or other reporting; (iv) any Mexican Withholding Taxes imposed at a rate in excess of 4.9% in
the event that such Holder has failed to provide on a timely basis, at the reasonable request of the Issuer, information or documentation (not described in clause (iii) above) concerning such Holder’s eligibility, if any, for benefits
under an income tax treaty that is in effect to which Mexico is a party that is necessary to determine the appropriate rate of deduction or withholding of Mexican Withholding Taxes under any such treaty; (v) any Mexican Withholding Taxes that
would not have been so imposed but for the presentation by such Holder of this Bond for payment on a date more than 15 days after the date on which such payment became due and payable or the date on which payment thereof is duly provided for,
whichever occurs later; (vi) any payment on this Bond to any Holder who is a fiduciary or partnership or other than the sole beneficial owner of any such payment, to the extent that a beneficiary or settlor with respect to such fiduciary, a
member of such a partnership or the beneficial owner of such payment would not have been entitled to the Additional Amounts had such beneficiary, settlor, member or beneficial owner been the Holder of this Bond; (vii) any withholding tax or
deduction imposed on a payment to an individual and required to be made pursuant to European Council Directive 2003/48/EC or any other European Union directive implementing the conclusions of the ECOFIN Council meeting of November 26-27, 2000
on the taxation of savings income, or any law implementing or complying with, or introduced in order to conform to, such a directive; or (viii) a Bond presented for payment by or on behalf of a Holder who would have been able to avoid such
withholding or deduction by presenting the relevant Bond to another Paying Agent in a member state of the European Union. All references in this Bond or in the Indenture to principal, premium, if any, interest and Redemption Price or any other
amount payable under or with respect to the Bonds shall, unless the context otherwise requires, be deemed to mean and include all Additional Amounts, if any, payable in respect thereof as set forth in this paragraph (b). 

(c) Notwithstanding the foregoing, the limitations on the Issuer’s and the Guarantors’ obligation to pay Additional Amounts set
forth in clauses (iii) and (iv) of paragraph (b) above shall not apply if the provision of the certification, identification, information, documentation, declaration or other evidence described in such clauses (iii) and
(iv) would be materially more onerous, in form, in procedure or in the substance of information disclosed, to a Holder or beneficial owner of this Bond (taking into account any relevant differences between U.S. and Mexican law, regulation or
administrative practice) than comparable information or other applicable reporting requirements imposed or provided for under U.S. federal income tax 

  
 R-5

 
law (including the United States-Mexico Income Tax Treaty), regulation (including proposed regulations) and administrative practice. In addition, the limitations on the Issuer’s and the
Guarantors’ obligation to pay Additional Amounts set forth in clauses (iii) and (iv) of paragraph (b) above shall not apply if Article 195, Section II, paragraph a) of the Mexican Income Tax Law (or a substantially similar
successor of such provision) is in effect, unless (A) the provision of the certification, identification, information, documentation, declaration or other evidence described in clauses (iii) and (iv) is expressly required by statute,
regulation, general rules or administrative practice in order to apply Article 195, Section II, paragraph a) of the Mexican Income Tax Law (or a substantially similar successor of such provision), the Issuer or the applicable Guarantor cannot obtain
such certification, identification, information, documentation, declaration or evidence, or satisfy any other reporting requirements, on its own through reasonable diligence and the Issuer or the applicable Guarantor otherwise would meet the
requirements for application of Article 195, Section II, paragraph a) of the Mexican Income Tax Law (or such successor provision) or (B) in the case of a Holder or beneficial owner of a Bond that is a pension fund or other tax-exempt
organization, such Holder or beneficial owner would be subject to Mexican Withholding Taxes at a rate less than that provided by Article 195, Section II, paragraph a) of the Mexican Income Tax Law (or such successor provision) if the information,
documentation or other evidence required under clause (iv) of paragraph (b) above were provided. In addition, clauses (iii) and (iv) of paragraph (b) above shall not be construed to require that a non-Mexican pension or
retirement fund, a non-Mexican tax-exempt organization or a non-Mexican financial institution or any other Holder or beneficial owner of this Bond register with the Ministry of Finance and Public Credit of Mexico for the purpose of establishing
eligibility for an exemption from or reduction of Mexican Withholding Taxes. 
 (d) The Issuer or a Guarantor, as the case may
be, will, upon written request, provide the Trustee, the Holders and the Paying Agents with a duly certified or authenticated copy of an original receipt of the payment of Mexican Withholding Taxes which such Issuer or Guarantor has withheld or
deducted in respect of any payments made under or with respect to the Bonds or the Guaranties, as the case may be. 
 (e) Any
reference herein or in the Indenture to principal, interest, Redemption Price or any other amount payable under or with respect to the Bonds will be deemed also to refer to any Additional Amounts which may be payable under the undertakings referred
to herein. 
 (f) In the event that Additional Amounts actually paid with respect to this Bond are based on rates of deduction
or withholding of Mexican Withholding Taxes in excess of the appropriate rate applicable to the Holder or beneficial owner of this Bond, and, as a result thereof, such Holder or beneficial owner is entitled to make a claim for a refund or credit of
such excess, then such Holder or beneficial holder shall, by accepting this Bond, be deemed to have assigned and transferred all right, title and interest to any such claim for a refund or credit of such excess to the Issuer or the applicable
Guarantor, as the case may be. However, by making such assignment, the Holder or beneficial owner makes no representation or warranty that the Issuer or the applicable Guarantor, as the case may be, will be entitled to receive such claim for a
refund or credit and such Holder or beneficial owner incurs no other obligation with respect thereto. 

  
 R-6

 6. (a) This Bond may not be redeemed prior to the Stated Maturity, except as specified
in paragraphs (b) and (c) below. 
 (b) The Bonds may be redeemed at the option of the Issuer in whole, but not in
part, at any time, together, if applicable, with interest accrued to but excluding the date fixed for redemption, at par, on giving not less than 30 nor more than 60 days’ notice to the Holders of the Bonds (which notice shall be irrevocable),
if (i) the Issuer or any Guarantor certifies to the Trustee immediately prior to the giving of such notice that it has or will become obligated to pay Additional Amounts in excess of the Additional Amounts that it would be obligated to pay if
payments (including payments of interest) on the Bonds (or payments under the Guaranties with respect to interest on the Bonds) were subject to Mexican Withholding Tax at a rate of 10%, as a result of any change in, amendment to, or lapse of, the
laws, rules or regulations of Mexico or any political subdivision or any taxing authority thereof or therein affecting taxation, or any change in, or amendment to, an official interpretation or application of such laws, rules or regulations, which
change or amendment becomes effective on or after the date of issuance of the Bonds and (ii) prior to the publication of any notice of redemption, the Issuer or any Guarantor shall deliver to the Trustee an Officer’s Certificate stating
that the obligation referred to in (i) above cannot be avoided by the Issuer or such Guarantor, as the case may be, taking reasonable measures available to it, and the Trustee shall be entitled to accept such certificate as sufficient evidence
of the satisfaction of the condition precedent set out in (i) above in which event it shall be conclusive and binding on the Holders of the Bonds; provided that no such notice of redemption shall be given earlier than 90 days prior to
the earliest date on which the Issuer or such Guarantor, as the case may be, would be obligated but for such redemption to pay such Additional Amounts were a payment in respect of the Bonds then due and, at the time such notice is given, such
obligation to pay such Additional Amounts remains in effect. 
 (c) The Bonds are subject to redemption upon not less than 30
nor more than 60 days’ notice by mail, in whole or in part, at any time or from time to time prior to Stated Maturity, at a Redemption Price equal to the sum of (A) 100% of the principal amount of such Bonds and (B) the Make-Whole
Amount (as defined below), plus accrued interest on the principal amount of the Bonds to the date of redemption. “Make-Whole Amount” means the excess of (i) the sum of the present values of each remaining scheduled payment of
principal and interest on the applicable Bonds (exclusive of interest accrued to the Redemption Date), discounted to the Redemption Date on a semi-annual basis (assuming a 360-day year consisting of twelve 30-day months) at the Treasury Rate (as
defined below) plus 35 basis points over (ii) the principal amount of such Bonds. “Treasury Rate” means, with respect to any Redemption Date, the rate per annum equal to the semi-annual equivalent yield to maturity or interpolated
maturity of the Comparable Treasury Issue (as defined below), assuming a price for the Comparable Treasury Issue (expressed as a percentage of its principal amount) equal to the Comparable Treasury Price (as defined below) for such Redemption Date.
“Comparable Treasury Issue” means the United States Treasury security or securities selected by an Independent Investment Banker (as defined below) as having an actual or interpolated maturity comparable to the remaining term of the Bonds
to be redeemed that would be utilized, at the time of selection and in accordance with customary financial practice, in pricing new issues of corporate debt securities of a comparable maturity to the remaining term of such Bonds. “Independent
Investment Banker” means one of the Reference Treasury Dealers (as defined below) appointed by the Issuer. “Comparable Treasury Price” means, with respect to any 

  
 R-7

 
Redemption Date, the average of the Reference Treasury Dealer Quotations (as defined below) for such Redemption Date. “Reference Treasury Dealer” means any of Goldman, Sachs &
Co., J.P. Morgan Securities LLC and RBS Securities Inc. or their Affiliates which are primary United States government securities dealers, and their respective successors; provided that if any of the foregoing shall cease to be a primary
United States government securities dealer in the City of New York (a “Primary Treasury Dealer”), the Issuer will substitute therefor another Primary Treasury Dealer. “Reference Treasury Dealer Quotation” means, with respect to
each Reference Treasury Dealer and any Redemption Date, the average, as determined by the Trustee, of the bid and asked prices for the Comparable Treasury Issue (expressed in case as a percentage of its principal amount) quoted in writing to the
Trustee by such Reference Treasury Dealer at 3:30 p.m. New York City time on the third business day preceding such Redemption Date. 
 (d) The Issuer or any Guarantor may at any time purchase Bonds at any price in the open market or otherwise. Bonds so purchased by the Issuer or any Guarantor may be held, resold (subject to compliance
with applicable securities and tax laws) or surrendered to the Trustee for cancellation. 
 7. This Bond is not repayable prior
to the Stated Maturity at the option of the Holder. 
 8. If any of the following events (each, an “Event of Default”)
occurs and is continuing, the Trustee, if so requested in writing by Holders of at least 20% in principal amount of the Bonds then outstanding, shall give notice to the Issuer that the Bonds are, and they shall immediately become, due and payable at
their principal amount together with accrued interest: 
 (a) Non-Payment: default is made in
payment of principal (or any part thereof) of or any interest on any of the Bonds when due and such failure continues, in the case of non-payment of principal for seven days, or, in the case of non-payment of interest, for fourteen days after the
due date; or 
 (b) Breach of Other Obligations: the Issuer defaults in performance or observance
of or compliance with any of its other obligations set out in the Bonds or the Guaranties or (insofar as it concerns the Bonds or the Guaranties) the Indenture which default is incapable of remedy or, if capable of remedy, is not remedied within 30
days after written notice of such default shall have been given to the Issuer and the Guarantors by the Trustee; or 
 (c) Cross-Default: default by the Issuer or any of the Issuer’s Material Subsidiaries (as defined below) or the Guarantors or any of them or any of their respective Material
Subsidiaries in the payment of the principal of, or interest on, any Public External Indebtedness (as defined below) of, or guaranteed by, the Issuer or any of the Issuer’s Material Subsidiaries or the Guarantors or any of them or any of their
respective Material Subsidiaries, in an aggregate principal amount exceeding U.S. $40,000,000 or its equivalent, when and as the same shall become due and payable, if such default shall continue for more than the period of grace, if any,
originally applicable thereto; or 

  
 R-8

 (d) Enforcement Proceedings: a distress or execution or other
legal process is levied or enforced or sued out upon or against any substantial part of the property, assets or revenues of the Issuer or any of the Issuer’s Material Subsidiaries or the Guarantors or any of them or any of their respective
Material Subsidiaries and is not discharged or stayed within 60 days of having been so levied, enforced or sued out; or 
 (e) Security Enforced: an encumbrancer takes possession or a receiver, manager or other similar officer is appointed of the whole or any substantial part of the undertaking, property, assets
or revenues of the Issuer or any of the Issuer’s Material Subsidiaries or the Guarantors or any of them or any of their respective Material Subsidiaries; or 

(f) Insolvency: the Issuer or any of the Issuer’s Material Subsidiaries or the Guarantors or any of them or
any of their respective Material Subsidiaries becomes insolvent or is generally unable to pay its debts as they mature or applies for or consents to or suffers the appointment of an administrator, liquidator, receiver or similar officer of the
Issuer or any of the Issuer’s Material Subsidiaries or the Guarantors or any of them or any of their respective Material Subsidiaries or the whole or any substantial part of the undertaking, property, assets or revenues of the Issuer or any of
the Issuer’s Material Subsidiaries or the Guarantors or any of them or any of their respective Material Subsidiaries or takes any proceeding under any law for a readjustment or deferment of its obligations or any part of them for insolvency,
bankruptcy, concurso mercantil, reorganization, dissolution or liquidation or makes or enters into a general assignment or an arrangement or composition with or for the benefit of its creditors or stops or threatens to cease to carry on its
business or any substantial part of its business; or 
 (g) Winding-up: an order is made or an
effective resolution passed for winding up the Issuer or any of the Issuer’s Material Subsidiaries or the Guarantors or any of them or any of their respective Material Subsidiaries; or 

(h) Moratorium: a general moratorium is agreed or declared in respect of any External Indebtedness (as
defined below) of the Issuer or any of the Issuer’s Material Subsidiaries or the Guarantors or any of them or any of their respective Material Subsidiaries; or 

(i) Authorization and Consents: any action, condition or thing (including the obtaining or effecting of any
necessary consent, approval, authorization, exemption, filing, license, order, recording or registration) at any time required to be taken, fulfilled or done in order (i) to enable the Issuer lawfully to enter into, exercise its rights and
perform and comply with its obligations under such Bonds, the Indenture and the Guaranty Agreement or any of the Guarantors lawfully to enter into, perform and comply with its obligations under the Guaranty Agreement in relation to such Bonds and
(ii) to ensure that those obligations are legally binding and enforceable, is not taken, fulfilled or done within 30 days of its being so required; or 

  
 R-9

 (j) Illegality: it is or becomes unlawful for (i) the
Issuer to perform or comply with one or more of its obligations under any of such Bonds, the Indenture or the Guaranty Agreement or (ii) the Guarantors or any of them to perform or comply with one or more of its obligations under the Guaranty
Agreement with respect to such Bonds; or 
 (k) Control: the Issuer ceases to be a decentralized
public entity of the Mexican Government or the Mexican Government otherwise ceases to control the Issuer or any Guarantor; or the Issuer or any of the Guarantors shall be dissolved, disestablished or suspends its respective operations, and such
dissolution, disestablishment or suspension of operations is material in relation to the business of the Issuer and the Guarantors taken as a whole; or the Issuer and the Guarantors cease to be the entities which have the exclusive right and
authority to conduct on behalf of Mexico the activities of exploration, exploitation, refining, transportation, storage, distribution and first-hand sale of crude oil and exploration, exploitation, production and first-hand sale of natural gas, as
well as the transportation and storage inextricably linked with such exploitation and production; or 
 (l)
Disposals: 
 (i) the Issuer ceases to carry on all or a substantial part of its business, or sells,
transfers or otherwise disposes (whether voluntarily or involuntarily) of all or substantially all of its assets (whether by one transaction or a series of transactions whether related or not) other than (A) solely in connection with the
implementation of the Ley de Petróleos Mexicanos (the “Petróleos Mexicanos Law”) or (B) to a Guarantor; or 
 (ii) any Guarantor ceases to carry on all or a substantial part of its business, or sells, transfers or otherwise disposes (whether voluntarily or involuntarily) of all or substantially all of its assets
(whether by one transaction or a series of transactions whether related or not) and such cessation, sale, transfer or other disposal is material in relation to the business of the Issuer and the Guarantors taken as a whole; or 

(m) Analogous Events: any event occurs which under the laws of Mexico has an analogous effect to any of the
events referred to in paragraphs (d) to (g) above; or 
 (n) Guaranties: the Guaranty Agreement
is not (or is claimed by the Issuer or any of the Guarantors not to be) in full force and effect. 

“External Indebtedness” means Indebtedness which is payable, or at the option of its Holder may be paid,
(i) in a currency or by reference to a currency other than the currency of Mexico, (ii) to a person resident or having its head office or its principal place of business outside Mexico and (iii) outside the territory of Mexico.

 “Guarantee” means any obligation of a person to pay the Indebtedness of another person, including
without limitation: 
 (i) an obligation to pay or purchase such Indebtedness; or 

  
 R-10

 (ii) an obligation to lend money or to purchase or subscribe for shares or
other securities or to purchase assets or services in order to provide funds for the payment of such Indebtedness; or 
 (iii) any other agreement to be responsible for such Indebtedness. 

“Indebtedness” means any obligation (whether present or future, actual or contingent) for the payment or
repayment of money which has been borrowed or raised (including money raised by acceptances and leasing). 

“Material Subsidiaries” means, at any time, each of the Guarantors and any Subsidiary of the Issuer or any of
the Guarantors having, as of the end of the most recent fiscal quarter of the Issuer, total assets greater than 12% of the total assets of the Issuer, the Guarantors and their Subsidiaries on a consolidated basis. 

“Public External Indebtedness” means any External Indebtedness which is in the form of, or represented by,
notes, bonds or other securities which are for the time being quoted, listed or ordinarily dealt in on any stock exchange. 
 “Subsidiary” means, in relation to any person, any other person (whether or not now existing) which is controlled directly or indirectly by, or more than 50 percent of whose issued equity share
capital (or equivalent) is then held or beneficially owned by, the first person and/or any one or more of the first person’s Subsidiaries, and “control” means the power to appoint the majority of the members of the governing body or
management of, or otherwise to control the affairs and policies of, that person. 
 After any such acceleration has been made,
but before a judgment or decree for the payment of money due based on acceleration has been obtained by the Trustee, the Holders of a majority in aggregate principal amount of the Bonds then outstanding may rescind and annul such acceleration if all
Events of Default, other than the non-payment of the principal of the Bonds that have become due solely by such declaration of acceleration have been cured or waived as provided in the Indenture. 

9. (a) The Indenture permits, with certain exceptions as therein provided, amendments, modifications and supplements of the rights
and obligations of the Issuer and the rights of the Holders of the Bonds under the Indenture and the Bonds at any time to be made by the Issuer and the Trustee with the consent of the Holders of specified percentages in principal amount of the Bonds
at the time Outstanding, on behalf of the Holders of all Bonds. The Indenture also contains provisions permitting the Holders of specified percentages in principal amount of the Bonds at the time Outstanding, on behalf of the Holders of all Bonds,
to waive compliance by the Issuer with certain provisions of the Indenture and certain past defaults under the Indenture or the Bonds and their consequences. Any such consent or waiver by the Holder of this Bond shall be conclusive and binding upon
such Holder and upon all future Holders of this Bond and of any Bond issued upon the registration of transfer hereof or in exchange herefor or in lieu hereof, whether or not notation of such consent or waiver is made upon this Bond. 

  
 R-11

 (b) For purposes of voting on amendments, waivers, modifications, acceleration and other
actions by the Holders of the Bonds, the Bonds will be considered a single series with the Issuer’s 6.500% Bonds due 2041 issued on June 2, 2011. 
 10. The Issuer may from time to time without the consent of any Holder of Bonds create and issue additional bonds having the same terms and conditions as Bonds previously issued (or the same except the
first payment of interest or the issue price), which additional bonds may be consolidated to form a single series with the outstanding Bonds; provided that such additional bonds do not have, for purposes of U.S. federal income taxation, a
greater amount of original issue discount than the Bonds have as of the date of the issue of such additional bonds. 
 11. No
reference herein to the Indenture and no provision of this Bond or of the Indenture shall alter or impair the obligations of the Issuer, which are absolute and unconditional, to pay the principal and premium (if any) of and interest on this Bond (as
such Bonds may be amended, modified, supplemented or waived, as provided in the Indenture) at the times, place and rate, and in the coin or currency, herein prescribed. 
 12. THIS BOND SHALL BE GOVERNED BY, AND INTERPRETED IN ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW YORK, UNITED STATES OF AMERICA. 

  
 R-12

 ABBREVIATIONS 
 The following abbreviations, when used in the inscription on the face of this instrument, shall be construed as though they were written out in full according to applicable laws or regulations:

  

					
	 TEN COM -
	 	as tenants in common	  	 UNIF
GIFT                                         
                       
 MIN
ACT -              Custodian             

		 		  	                    (Cust)         
           (Minor)
	 TEN ENT -
	 	as tenants by the entireties	  	 Under Uniform Gifts
 to Minors
Act

	 JT TEN -
	 	as joint tenants with right of survivorship and not as tenants in common	  	_____________________________________________
		 		  	                             
                       State

 Additional abbreviations may also be used though not in the above list. 

FOR VALUE RECEIVED the undersigned hereby sell(s), assign(s) and transfer(s) unto 

PLEASE INSERT SOCIAL SECURITY OR OTHER 
     IDENTIFYING NUMBER OF ASSIGNEE 
  

 
 Please print or typewrite name
and address 
 including postal zip code of assignee 

 
  
 the within bond and all rights thereunder, 
 hereby irrevocably constituting and appointing

                         
                                         
                                   attorney to transfer said bond on the
books of Petróleos Mexicanos, with full power of substitution in the premises. 
 Dated:
                     
  

 
 NOTICE: The signature to this
assignment must correspond with the name as written upon the face of the within instrument in every particular, without alteration or enlargement or any change whatever. 

  
 R-13

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