Document:

EX-10.1

 Exhibit 10.1 

SECOND AMENDMENT TO LOAN AGREEMENT 

This Second Amendment to Loan Agreement (this “Amendment”) is made as of December 10, 2013, by and among AMERICAN
TOWER CORPORATION, as Borrower (the “Borrower”), JPMORGAN CHASE BANK, N.A., as Administrative Agent (the “Administrative Agent”), and the financial institutions whose names appear as lenders on the signature page
hereof. 
 WHEREAS, the Borrower and the Administrative Agent are party to that certain Loan Agreement, dated as of January 31,
2012 (as amended, restated, extended, supplemented or otherwise modified in writing from time to time, the “Loan Agreement”) among the Borrower, the Administrative Agent and the Lenders from time to time party thereto. 

WHEREAS, the Borrower, the Administrative Agent and the Lenders who are signatories hereto and who constitute Majority Lenders have
agreed to amend the Loan Agreement pursuant to Section 11.11 of the Loan Agreement. 
 NOW, THEREFORE, for good and
valuable consideration, the receipt and sufficiency of which are hereby acknowledged by each of the parties hereto, the parties hereby agree as follows: 

1. DEFINED TERMS. Unless otherwise defined herein, capitalized terms used herein shall have the meanings given to them in the Loan Agreement.

 2. AMENDMENT. The Loan Agreement is hereby amended as follows: 

(a) Section 1.1 of the Loan Agreement is hereby amended by inserting the following definitions: 

““Designated Person” means a person or entity (a) listed in the annex to, or otherwise subject to the provisions
of, any Executive Order (as defined in the definition of “Sanctions Laws and Regulations”), (b) named as a “Specifically Designated National and Blocked Person” (“SDN”) on the most current list published by
the U.S. Department of the Treasury Office of Foreign Assets Control at its official website or any replacement website or other replacement official publication of such list or (c) in which an entity or person on the SDN List has 50% or
greater ownership interest or that is otherwise controlled by an SDN.” 
 ““OFAC” means the U.S. Department of
the Treasury’s Office of Foreign Assets Control.” 
 ““Sanctioned Country” means a country that is subject
to a sanctions program identified on the list maintained by OFAC and available at http://www.treas.gov/offices/enforcement/ofac/programs, or as otherwise published from time to time.” 

 ““Sanctions Laws and Regulations” means (i) any sanctions,
prohibitions or requirements imposed by any executive order (an “Executive Order”) or by any sanctions program administered by the U.S. Department of the Treasury Office of Foreign Assets Control that apply to the Borrower; and
(ii) any sanctions measures imposed by the United Nations Security Council, European Union or the United Kingdom that apply to the Borrower.” 

(b) Section 4.1 of the Loan Agreement is hereby amended by inserting the following paragraph (n): 

“(n) Designated Persons. None of the Borrower or any of its Subsidiaries nor, to the knowledge of the Borrower, any of their
respective directors, officers, brokers or other agents is a Designated Person.” 
 (c) Article 5 of the Loan Agreement is hereby
amended by inserting the following Section 5.11: 
 “Section 5.11 Designated Persons. None of the proceeds of any Loan
will, to the Borrower’s knowledge, be used, and to the Borrower’s knowledge, none of the proceeds of any Loan have been used, to fund any operations in, finance any investments or activities in, or make any payments to a Designated Person
or a Sanctioned Country.” 
 (d) Section 7.1 of the Loan Agreement is hereby amended by deleting paragraph (g) thereof in its
entirety and inserting in its place the following: 
 “(g) Indebtedness of Subsidiaries of the Borrower, so long as
(i) no Default exists or would be caused thereby and (ii) the principal outstanding amount of such Indebtedness at the time of its incurrence does not exceed (when taken together with the principal outstanding amount at such time of
Indebtedness incurred under Section 7.1(i) hereof (or portion thereof) that is guaranteed by any Subsidiary of the Borrower), $800,000,000 in the aggregate;” 

(e) Section 7.1 of the Loan Agreement is hereby further amended by deleting paragraph (k) thereof in its entirety and inserting in
its place the following: 
 “(k) Guaranties by any Subsidiary of the Borrower of any of the foregoing except for the
Indebtedness set forth under Section 7.1(h) hereof; provided that there shall be no prohibition against Guaranties by any Subsidiaries of the Borrower that (i) are special purposes entities directly involved in any CMBS Facilities and
(ii) have no material assets other than the direct or indirect Ownership Interests in special purpose entities directly involved in such CMBS 

 
Facilities; provided further that the principal outstanding amount of any Indebtedness set forth in Section 7.1(i) hereof (or portion thereof) that is guaranteed by any Subsidiary of the
Borrower shall not exceed (when taken together with the principal outstanding amount at such time of Indebtedness incurred under Section 7.1(g) hereof), $800,000,000 in the aggregate.” 

(f) Section 7.7 of the Loan Agreement is hereby amended by deleting the language therein in its entirety and inserting in its place the
following: 
 “So long as the Debt Rating received from each of Standard and Poor’s, Moody’s and Fitch is
lower than BBB-, Baa3, or BBB-, respectively, as of the end of each fiscal quarter, based upon the financial statements delivered pursuant to Section 6.1 or 6.2 hereof for such quarter, the Borrower shall maintain a ratio of (a) Adjusted
EBITDA as of the end of such fiscal quarter to (b) Interest Expense for the twelve (12) month period then ending, of not less than 2.50 to 1.00.” 

(g) Section 8.1 of the Loan Agreement is hereby amended by deleting paragraph (h) thereof in its entirety and inserting in its place
the following: 
 “(h) a judgment not covered by insurance or indemnification, where the indemnifying party has agreed
to indemnify and is financially able to do so, shall be entered by any court against the Borrower or any Material Subsidiary Group for the payment of money which exceeds singly, or in the aggregate with other such judgments, $250,000,000.00, or a
warrant of attachment or execution or similar process shall be issued or levied against property of the Borrower or any Material Subsidiary Group which, together with all other such property of the Borrower or any Material Subsidiary Group subject
to other such process, exceeds in value $250,000,000.00 in the aggregate, and if, within thirty (30) days after the entry, issue or levy thereof, such judgment, warrant or process shall not have been paid or discharged or stayed pending appeal
or removed to bond, or if, after the expiration of any such stay, such judgment, warrant or process, shall not have been paid or discharged or removed to bond;” 

(h) Section 8.1 of the Loan Agreement is hereby amended by deleting paragraph (j) thereof in its entirety and inserting in its place
the following: 
 “(j) there shall occur (i) any acceleration of the maturity of any Indebtedness of the Borrower
or any Material Subsidiary in an aggregate principal amount exceeding $250,000,000.00, or, as a result of a failure to comply with the terms thereof, such Indebtedness shall otherwise have become due and payable prior to its scheduled maturity; or
(ii) any failure to make any payment when due (after any applicable grace period) with respect to any Indebtedness of the Borrower or any Material Subsidiary (other than the Obligations) in an aggregate principal amount exceeding
$250,000,000.00;” 

 3. BRING-DOWN OF REPRESENTATIONS. The Borrower hereby certifies that, as of the date of
this Amendment, (i) the representations and warranties contained in Section 4.1 of the Loan Agreement are true and correct in all material respects, except for those representations and warranties that are qualified by materiality or
Materially Adverse Effect, which shall be true and correct, both before and after giving effect to this Amendment, and after giving effect to any updates to information provided to the Lenders in accordance with the terms of the Loan Agreement
except to the extent stated to have been made as of the Agreement Date, and (ii) no Default exists. 
 4. EFFECTIVENESS.
(i) Section 2(a), (b), (c), (d), (e), (g) and (h) of this Amendment shall become effective as of the date first above written and (ii) Section 2(f) of this Amendment shall become effective as of September 30, 2013,
in each case upon the Administrative Agent receiving this Amendment duly executed by the Borrower and the Majority Lenders. 
 5. NO OTHER
AMENDMENTS. Except as provided herein, each of the other provisions of the Loan Agreement shall remain in full force and effect. 
 6.
COUNTERPARTS. This Amendment may be executed in any number of counterparts, each of which shall be deemed to be an original, but all such separate counterparts shall together constitute one and the same instrument. Delivery of an executed
counterpart of a signature page to this Amendment by telecopier or electronic transmission shall be effective as delivery of a manually executed counterpart. 

7. GOVERNING LAW. This Amendment shall be construed in accordance with and governed by the internal laws of the State of New York applicable
to agreements made and to performed in the State of New York. 
 8. MISCELLANEOUS. 

(a) On and after the date hereof, (i) each reference in the Loan Agreement to “this Agreement,” “hereunder,”
“hereof” or words of like import referring to the Loan Agreement shall mean and be a reference to the Loan Agreement, as amended by this Amendment. 

(b) The execution, delivery and effectiveness of this Amendment shall not, except as expressly provided herein, operate as a waiver of any
right, power or remedy of any Lender or the Administrative Agent under any of the Loan Documents, nor constitute a waiver of any provision of any of the Loan Documents. 

(c) On and after the effectiveness of this Amendment, this Amendment shall for all purposes constitute a Loan Document. 

 IN WITNESS WHEREOF, the parties hereto have executed this Amendment or caused it to be executed
by their duly authorized officers, all as of the day and year above written. 
  

							
	BORROWER:	 		 	AMERICAN TOWER CORPORATION
				
		 		 	By:	 	 /S/ THOMAS A. BARTLETT

		 		 	Name:	 	Thomas A. Bartlett
		 		 	Title:	 	Executive Vice President and Chief Financial Officer

 [Signature Page to Second Amendment to Loan Agreement] 

							
	LENDERS	 		 	 JPMORGAN CHASE BANK, N.A., as

Administrative Agent and a Lender

				
		 		 	By:	 	 /S/ JOHN G. KOWALCZUK

		 		 	Name:	 	John G. Kowalczuk
		 		 	Title:	 	Executive Director

  
 [Signature Page to
Second Amendment to Loan Agreement] 

 
			
	Toronto Dominion (Texas) LLC, as a Lender
		
	By:	 	 /S/ ALICE MARE

	Name:	 	Alice Mare
	Title:	 	Authorized Signatory
	
	Mizuho Bank, Ltd., as a Lender
		
	By:	 	 /S/ BERTRAM H. TANG

	Name:	 	Bertram H. Tang
	Title:	 	Designated Signatory
	
	Citibank, N.A., as a Lender
		
	By:	 	 /S/ KEITH LUKASAVICH

	Name:	 	Keith Lukasavich
	Title:	 	Vice President
	
	THE ROYAL BANK OF SCOTLAND PLC, as a Lender
		
	By:	 	 /S/ ALEX DAW

	Name:	 	Alex Daw
	Title:	 	Director
	
	The Bank of Tokyo-Mitsubishi UFJ, Ltd., as a Lender
		
	By:	 	 /S/ JOSE CARLOS

	Name:	 	Jose Carlos
	Title:	 	Director

  
 [Signature Page to
Second Amendment to Loan Agreement] 

 
			
	Credit Suisse AG, Cayman Islands Branch, as a Lender
		
	By:	 	 /S/ CHRISTOPHER DAY

	Name:	 	Christopher Day
	Title:	 	Authorized Signatory
		
	By:	 	 /S/ JEAN-MARC VAUCLAIR

	Name:	 	Jean-Marc Vauclair
	Title:	 	Authorized Signatory
	
	MORGAN STANLEY BANK, N.A., as a Lender
		
	By:	 	 /S/ SCOTT JENSEN

	Name:	 	Scott Jensen
	Title:	 	Authorized Signatory
	
	BARCLAYS BANK PLC, as a Lender
		
	By:	 	 /S/ NOAM AZACHI

	Name:	 	Noam Azachi
	Title:	 	Vice President
	
	SANTANDER BANK, N.A., as a Lender
		
	By:	 	 /S/ MATTHEW BARTLETT

	Name:	 	Matthew Bartlett
	Title:	 	Vice President
	
	ROYAL BANK OF CANADA, as a Lender
		
	By:	 	 /S/ SCOTT JOHNSON

	Name:	 	Scott Johnson
	Title:	 	Authorized Signatory

  
 [Signature Page to
Second Amendment to Loan Agreement]EX-4.1

 Exhibit 4.1 

THIRD AMENDMENT TO REVOLVING CREDIT AGREEMENT 

THIS THIRD AMENDMENT TO REVOLVING CREDIT AGREEMENT (this “Amendment”) is made and entered into as of the 6th day of December,
2013, among NOBLE CORPORATION, a Cayman Islands exempted company limited by shares (the “Company”), WELLS FARGO BANK, NATIONAL ASSOCIATION, as Administrative Agent, and the Lenders party hereto. 

RECITALS 
 1. The Company,
Administrative Agent, Issuing Banks and Lenders are parties to that certain Revolving Credit Agreement dated as of February 11, 2011, as amended by First Amendment to Revolving Credit Agreement dated as of March 11, 2011 and Second
Amendment to Revolving Credit Agreement dated as of January 11, 2013 (together with any other amendments, supplements or modifications thereto, the “Credit Agreement”), pursuant to which the Lenders have made certain loans to
and extensions of credit for the account of the Company. 
 2. The Company, Administrative Agent and the Lenders party hereto desire to amend
the Credit Agreement as hereinafter set forth. 
 NOW, THEREFORE, in consideration of the mutual covenants and agreements herein contained,
the Company, the Administrative Agent and the Lenders party hereto hereby agree as follows: 
 ARTICLE I. — Definitions and
References 
 § 1.1. Terms Defined in the Credit Agreement. Unless the context otherwise requires or unless otherwise
expressly defined herein, capitalized terms which are defined in the Credit Agreement and which are used in this Amendment shall have the meanings given them in the Credit Agreement. 

§ 1.2. Other Defined Terms. Unless the context otherwise requires, the following terms when used in this Amendment shall have the
meanings assigned to them in this § 1.2. 
 “Amendment” means this Third Amendment to Revolving
Credit Agreement. 
 “Extending Lender” means each Lender party hereto other than Bank of America, N.A. 

ARTICLE II. — Amendments 

§ 2.1. Addition of Definitions. Section 1.1 of the Credit Agreement is hereby amended by adding the following new definitions
where alphabetically appropriate, which read in their entirety as follows: 

 “Anti-Corruption Laws” means FCPA and all other laws, rules, and
regulations of any jurisdiction applicable to the Company and its affiliated companies concerning or relating to bribery or corruption. 

“Change in Law” means the adoption of or any change in, on or after the date hereof (or, if later, on or after
the date the Administrative Agent or any Lender becomes the Administrative Agent or a Lender), any applicable law, rule or regulation or in the interpretation or administration thereof by any Governmental Authority, central bank or comparable agency
charged with the interpretation or administration thereof; provided that notwithstanding anything herein to the contrary, (i) the Dodd-Frank Wall Street Reform and Consumer Protection Act and all requests, rules, guidelines or directives
thereunder or issued in connection therewith and (ii) all requests, rules, guidelines or directives promulgated by the Bank for International Settlements, the Basel Committee on Banking Supervision (or any successor or similar authority) or the
United States or foreign regulatory authorities, in each case, pursuant to Basel III, shall in each case be deemed to be a “Change in Law”, regardless of the date enacted, adopted or issued. 

“FCPA” means the Foreign Corrupt Practices Act of 1977, as amended. 

“NHIL Guaranty” means a guaranty of NHIL, in substantially the form of Exhibit 6.11. 

“Noble Spinco” means a to-be-formed subsidiary of the Company into which most of the Company’s and its
Subsidiaries’ standard specification drilling units, and related assets, liabilities and businesses, are to be transferred, following which Noble Parent Company is to separate and spin off Noble Spinco, as such separation and spin-off is
generally described in Noble Parent Company’s press release dated September 24, 2013 attached as Exhibit 99.1 to the Form 8-K Current Report filed by Noble Parent Company with the SEC on September 24, 2013. 

“Noble Spinco Indebtedness” means Indebtedness of Noble Spinco under one or more public note issuances so long
as (i) such Indebtedness shall have no recourse to the Company or any of its Subsidiaries (other than Noble Spinco or its Subsidiaries) or to any of the Company’s or any of its Subsidiaries’ present or future assets or interests
(other than assets and interests transferred into Noble Spinco or its Subsidiaries) and (ii) Noble Spinco and its Subsidiaries have no access to and/or control of, and do not receive, any proceeds of any such Indebtedness. 

“OFAC” means The Office of Foreign Assets Control of the U.S. Department of the Treasury. 

“Sanctioned Entity” means (a) a country or a government of a country, (b) an agency of the
government of a country, (c) an organization directly or indirectly controlled by a country or its government, (d) a Person resident in a country, in each case, that is subject to a country sanctions program administered and enforced by
OFAC, the United Nations Security Council, the European Union or Her Majesty’s Treasury of the United Kingdom. 

  
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 “Sanctioned Person” means a person named on the list of
Specially Designated Nationals maintained by OFAC, or any similar list maintained by the U.S. State Department, the U.S. Department of Commerce, the U.S. Department of the Treasury or any other U.S. Governmental Authority, or maintained by the
United Nations Security Council, the European Union or any member state thereof, as may be amended, supplemented or substituted from time to time. 

§ 2.2. Deletion of Definitions. Section 1.1 of the Credit Agreement is hereby amended by deleting the defined term
“Senior NDC Notes”. 
 § 2.3. Use of Proceeds. Section 5.5(a) of the Credit Agreement is hereby amended by adding
a new sentence at the end thereof, to read as follows: 
 The Company shall not, and shall ensure that none of its Subsidiaries will, use the
proceeds of the Loans or any Letters of Credit (including any indirect use intended by the Company or its Subsidiaries) (i) for any purpose which would result in a violation of any Anti-Corruption Laws applicable to the Company or any of its
Subsidiaries or (ii) for the purpose of funding or financing any activities, business or transactions of, or with, any Sanctioned Person or Sanctioned Entity which would result in a violation of any of the country or list-based economic and
trade sanctions administered and enforced by OFAC in effect at the time of the use of such proceeds. 
 § 2.4. Anti-Corruption Laws;
OFAC; Sanctioned Persons and Sanctioned Entities. Section 5.7 of the Credit Agreement is hereby amended in its entirety to read as follows: 

Section 5.7. Anti-Corruption Laws; OFAC; Sanctioned Persons and Sanctioned Entities. 

(a) Anti-Corruption Laws. The Company and each of its Subsidiaries has conducted its business in compliance with all
applicable Anti-Corruption Laws, including without limitation the FCPA, except to the extent that failure to comply with such Anti-Corruption Laws could not reasonably be expected to have a Material Adverse Effect. The Company and its Subsidiaries
have instituted and maintain policies and procedures designed to ensure continued compliance with such Anti-Corruption Laws. 

(b) OFAC; Sanctioned Persons and Sanctioned Entities. Neither the Company nor any of its Subsidiaries, nor any director,
officer, agent, employee or Affiliate of the Company, is in violation of any of the country or list based economic and trade sanctions administered and enforced by OFAC. Neither the Company nor any of its Subsidiaries, nor any director, officer,
agent, employee or Affiliate of the Company (i) is a Sanctioned Person or a Sanctioned Entity, (ii) has its assets located in Sanctioned Entities, or (iii) derives revenues from investments in, or transactions with Sanctioned Persons
or Sanctioned Entities. 
 § 2.5. Subsidiary Indebtedness. 

Section 6.11(j) of the Credit Agreement is hereby amended in its entirety to read as follows: 

  
 3 

 (j) Indebtedness (not otherwise permitted under any other clause of this
Section 6.11) in an aggregate principal amount outstanding for all Subsidiaries not exceeding at the time of incurrence thereof (together with all such other Indebtedness outstanding pursuant to this clause (j) at such time) ten percent
(10%) of Consolidated Net Assets (the “Subsidiary Debt Basket Amount”); provided, Noble Spinco Indebtedness shall be excluded from the calculation of the aggregate principal amount of outstanding Indebtedness for all
Subsidiaries. 
 Section 6.11(k) of the Credit Agreement is hereby amended in its entirety to read as follows: 

(k) other Indebtedness not otherwise permitted under any other clause of this Section 6.11 so long as such
Subsidiary has in force a Subsidiary Guaranty, provided that any such Subsidiary Guaranty (including the NDC Guaranty and the NHIL Guaranty) and all obligations thereunder of the Guarantor party thereto shall be terminated upon notice to the
Administrative Agent by the Company that after giving effect to such termination (x) the aggregate principal amount of Indebtedness (excluding Noble Spinco Indebtedness) of all Subsidiaries that do not have in force a Subsidiary Guaranty is
equal to or less than the Subsidiary Debt Basket Amount, and (y) no Default or Event of Default has occurred and is continuing; and 

§ 2.6. Compliance with Laws. The reference to “environmental laws and ERISA” in Section 6.15 is hereby amended to
refer instead to “environmental laws, ERISA, Anti-Corruption Laws and OFAC”. 
 § 2.7. Change in Law. The reference to
“at any time any change, after the date hereof (or later, after the date the Administrative Agent or any Issuing Bank or Lender becomes the Administrative Agent or an Issuing Bank or Lender), in applicable law or regulation or in the
interpretation thereof” in the first sentence of Section 8.1(a) of the Credit Agreement is hereby amended to refer instead to “Change in Law”. 

§ 2.8. Increased Cost and Reduced Return. The reference to “on or after the date hereof, the adoption of or any change in any
applicable law, rule or regulation, or any change in the interpretation or administration thereof by any governmental authority, central bank or comparable agency charged with the interpretation thereof,” in the first sentence of
Section 8.3(a) of the Credit Agreement is hereby amended to refer instead to “Change in Law”, and the reference therein to “such authority, central bank or comparable agency exercising control over banks or financial institutions
generally” is hereby amended to refer instead to “Governmental Authority”. The reference to “the adoption after the date hereof of any applicable law, rule or regulation regarding capital adequacy, or any change therein” in
the first sentence of Section 8.3(b) is hereby amended to refer instead to “a Change in Law regarding capital adequacy or liquidity”. 

§ 2.9. Substitution of Lender or Issuing Bank. The reference to “change in law” in clause (d) of the first sentence
of Section 8.6 of the Credit Agreement is hereby amended to refer instead to “Change in Law”. 
 § 2.10. Guaranty
Release. Article 9 of the Credit Agreement is hereby amended by adding a new Section 9.9 at the end of such Article to read in its entirety as follows: 

  
 4 

 Section 9.9. Release of Guaranties. So long as no Default has
occurred and is continuing under the Credit Documents (or would result from such release), if all of the capital stock of a Guarantor that is owned by the Company or a Subsidiary is sold or otherwise disposed of in a transaction or transactions
permitted by this Agreement, or upon any request by the Company for the release of a Guarantor from its Subsidiary Guaranty pursuant to Section 6.11(k), then promptly following the Company’s request, the Administrative Agent shall execute
a release of such Guarantor from its Subsidiary Guaranty. 
 § 2.11. Guaranty Amendments. Each of the NDC Guaranty, the NHIL
Guaranty and the form of Subsidiary Guaranty attached as Exhibit 6.11 to the Credit Agreement (the “Subsidiary Guaranty Form”) is hereby amended as follows to the extent applicable to such Guaranty as provided below: 

(A) Section 4 of each of the NDC Guaranty and the NHIL Guaranty is hereby amended in its entirety to read as follows: 

SECTION 4. Waiver of Subrogation and Contribution Rights Until Facility Termination. The Guarantor will not
exercise any rights against the Company which it may acquire by way of subrogation or contribution, by any payment made hereunder or otherwise, until such time as all of the outstanding Guaranteed Obligations (other than indemnities and other
contingent obligations not then due and payable and as to which no claim has been made as of the time of determination) shall have been paid in full in cash, all Letters of Credit shall have been irrevocably terminated (unless such Letters of Credit
have been cash collateralized in accordance with the provisions of the Credit Agreement or other arrangements with respect thereto have been made that are satisfactory to the applicable Issuing Bank) and the Commitments shall have been irrevocably
terminated (such time, “Facility Termination”). If any amount shall be paid to the Guarantor on account of such subrogation or contribution rights at any time before Facility Termination, such amount shall be held in trust for the
benefit of the Guaranteed Parties and shall forthwith be paid to the Administrative Agent to be credited and applied to the Guaranteed Obligations, whether matured or unmatured, in accordance with the terms of the Credit Agreement. If (i) the
Guarantor shall have made any payment to the Guaranteed Parties of all or any part of the Guaranteed Obligations and (ii) Facility Termination shall have occurred, the Guaranteed Parties will, at the Guarantor’s request, execute and
deliver to Guarantor appropriate documents, without recourse and without representation or warranty, necessary to evidence the transfer by subrogation to the Guarantor of an interest in the Guaranteed Obligations resulting from such payment by the
Guarantor. 
 (B) Section 4 of the Subsidiary Guaranty Form is hereby amended in its entirety to read as follows: 

SECTION 4. Waiver of Subrogation and Contribution Rights Until Facility Termination. No Guarantor will exercise
any rights against the Company which it may acquire by way of subrogation or contribution, by any payment made hereunder or otherwise, until such time as all of the outstanding Guaranteed Obligations (other than indemnities and other contingent
obligations not then due and payable and as to which no claim has been made as of the time of determination) shall have been paid in full in cash, 

  
 5 

 
all Letters of Credit shall have been irrevocably terminated (unless such Letters of Credit have been cash collateralized in accordance with the provisions of the Credit Agreement or other
arrangements with respect thereto have been made that are satisfactory to the applicable Issuing Bank) and the Commitments shall have been irrevocably terminated (such time, “Facility Termination”). If any amount shall be paid to
any Guarantor on account of such subrogation or contribution rights at any time before Facility Termination, such amount shall be held in trust for the benefit of the Guaranteed Parties and shall forthwith be paid to the Administrative Agent to be
credited and applied to the Guaranteed Obligations, whether matured or unmatured, in accordance with the terms of the Credit Agreement. If (i) any Guarantor shall have made any payment to the Guaranteed Parties of all or any part of the
Guaranteed Obligations and (ii) Facility Termination shall have occurred, the Guaranteed Parties will, at such Guarantor’s request, execute and deliver to such Guarantor appropriate documents, without recourse and without representation or
warranty, necessary to evidence the transfer by subrogation to such Guarantor of an interest in the Guaranteed Obligations resulting from such payment by such Guarantor. 

(C) Section 10 of each of the NDC Guaranty and the NHIL Guaranty is hereby amended in its entirety to read as follows: 

SECTION 10. Continuing Guaranty; Transfer Of Obligations. This Guaranty is a continuing guaranty and shall
(i) remain in full force and effect until termination in accordance with Section 22 hereof, (ii) be binding upon the Guarantor, its successors and assigns, and (iii) inure to the benefit of and be enforceable by the
Administrative Agent, for the benefit of the Guaranteed Parties. 
 (D) Section 10 of the Subsidiary Guaranty Form is hereby amended in
its entirety to read as follows: 
 SECTION 10. Continuing Guaranty; Transfer Of Obligations. This Guaranty is
a continuing guaranty and shall (i) remain in full force and effect until termination in accordance with Section 23 hereof, (ii) be binding upon each Guarantor, its successors and assigns, and (iii) inure to the benefit of and be
enforceable by the Administrative Agent, for the benefit of the Guaranteed Parties. 
 (E) Section 18 of each of the NDC Guaranty and
the NHIL Guaranty is hereby amended in its entirety to read as follows: 
 SECTION 18. Representations and
Warranties. The Guarantor represents and warrants to each Guaranteed Party that all representations and warranties relating to it or any of its Subsidiaries contained in Article 5 of the Credit Agreement are true and correct in all material
respects (a) on and as of the date hereof, except to the extent that any such representation or warranty relates solely to an earlier date, in which case it shall have been true and correct in all material respects as of such earlier date, and
(b) as of the time of any Borrowing or Loan that increases the aggregate amount of Loans outstanding after giving effect to such Borrowing or Loan (other than those that relate to the representations and warranties set forth in Sections 5.4,
5.10, 5.16 and 5.17 of the Credit Agreement), except as a result of the transactions expressly permitted hereunder or under the Credit Agreement, and except to the extent that any such representation or warranty relates solely to an earlier date, in
which case it shall have been true and correct in all material respects as of such earlier date. 

  
 6 

 (F) Section 18 of the Subsidiary Guaranty Form is hereby amended in its entirety to read as
follows: 
 SECTION 18. Representations and Warranties. Each Guarantor represents and warrants to each
Guaranteed Party that all representations and warranties relating to it or any of its Subsidiaries contained in Article 5 of the Credit Agreement are true and correct in all material respects (a) on and as of the date hereof, except to the
extent that any such representation or warranty relates solely to an earlier date, in which case it shall have been true and correct in all material respects as of such earlier date, and (b) as of the time of any Borrowing or Loan that
increases the aggregate amount of Loans outstanding after giving effect to such Borrowing or Loan (other than those that relate to the representations and warranties set forth in Sections 5.4, 5.10, 5.16 and 5.17 of the Credit Agreement), except as
a result of the transactions expressly permitted hereunder or under the Credit Agreement, and except to the extent that any such representation or warranty relates solely to an earlier date, in which case it shall have been true and correct in all
material respects as of such earlier date. 
 (G) Section 22 of each of the NDC Guaranty and the NHIL Guaranty is hereby amended in its
entirety to read as follows: 
 SECTION 22. Termination of Guaranty. This Guaranty and all obligations of the
Guarantor to the Guaranteed Parties hereunder shall terminate (i) automatically upon Facility Termination, subject to the last sentence of Section 2 hereof, or (ii) as provided in Section 6.11(k) of the Credit Agreement or
Section 9.9 of the Credit Agreement. Upon any such termination, the Administrative Agent shall provide written confirmation of such termination as may be reasonably requested by the Guarantor. 

(H) Section 23 of the Subsidiary Guaranty Form is hereby amended in its entirety to read as follows: 

SECTION 23. Termination of Guaranty. This Guaranty and all obligations of each Guarantor to the Guaranteed
Parties hereunder shall terminate (i) automatically upon Facility Termination, subject to the last sentence of Section 2 hereof, or (ii) as provided in Section 6.11(k) of the Credit Agreement or Section 9.9 of the Credit
Agreement. Upon any such termination, the Administrative Agent shall provide written confirmation of such termination as may be reasonably requested by the applicable Guarantor. 

§ 2.12. Extension of Commitment Termination Date. Pursuant to Section 2.16 of the Credit Agreement, no earlier than 60 days
and at least 45 days prior to February 11, 2014, the Company may request that the Commitment Termination Date be extended for a 1-year period. The Company has requested that the Commitment Termination Date be extended for a 1-year period to
February 11, 2016, and in connection therewith has requested that Administrative Agent and Lenders waive the requirement under such Section 2.16 that such request be made no earlier than 60 days prior to February 11, 2014.
Administrative Agent and the Extending Lenders party hereto hereby waive the requirement under such Section 2.16 that such request be made no earlier than 60 days prior to February 11, 2014, and effective as of the date hereof, each
Extending Lender party hereto hereby agrees to so extend its Commitment to February 11, 2016. 

  
 7 

 ARTICLE III. — Conditions of Effectiveness 

§ 3.1. Effective Date. This Amendment shall become effective as of the date first written above when and only when the following
conditions have been satisfied or waived in accordance with Section 10.11 of the Credit Agreement: 
 (a) The
Administrative Agent shall have received, at Administrative Agent’s office (i) a counterpart of this Amendment executed and delivered by the Company, Administrative Agent, and Required Lenders and (ii) the Consent and Agreement
attached hereto executed and delivered by each Guarantor; 
 (b) Each of the representations and warranties of the Company
set forth in Section 4.1 hereof shall be true and correct as of the date hereof, except to the extent that any such representation or warranty relates solely to an earlier date, in which case it shall have been true and correct as of such
earlier date; 
 (c) No Default or Event of Default shall have occurred and be continuing; and 

(d) On or before the date hereof, the Lenders and the Administrative Agent shall have received all fees and all reasonable
out-of-pocket expenses then due and owing to the Administrative Agent and the Lenders pursuant to the Credit Agreement and as otherwise agreed in writing by the Company. 

ARTICLE IV. — Representations and Warranties 

§ 4.1. Representations and Warranties of Company. In order to induce Administrative Agent and Lenders to enter into this
Amendment, Company represents and warrants to Administrative Agent and each Lender on the date hereof that: 
 (a) Each of
the representations and warranties of the Company and its Subsidiaries set forth in the Credit Agreement (other than the representations and warranties set forth in Sections 5.4, 5.11, 5.17 and 5.18) and in the other Credit Documents (other than
those that relate to the representations and warranties set forth in Sections 5.4, 5.11, 5.17 and 5.18) are true and correct in all material respects as of the date hereof after giving effect to this Amendment, except as a result of the transactions
expressly permitted hereunder or thereunder and except to the extent that any such representation or warranty relates solely to an earlier date, in which case it shall have been true and correct in all material respects as of such earlier date; 

(b) No Default or Event of Default has occurred and is continuing as of the date hereof or would occur immediately after giving
effect to this Amendment; 
 (c) Each of the Credit Parties has the organizational power and authority to execute, deliver
and carry out the terms and provisions of this Amendment to the extent a party hereto and has taken all necessary company action to authorize the execution, delivery and performance hereof. Each of the Credit Parties has duly executed and delivered
this Amendment to the extent a party hereto and such Amendment constitutes 

  
 8 

 
the legal, valid and binding obligation of such Credit Party to the extent a party hereto enforceable against it in accordance with its terms, subject as to enforcement only to bankruptcy,
insolvency, reorganization, moratorium or other similar laws affecting the enforcement of creditors’ rights generally and equitable principles; 

(d) Neither the execution, delivery or performance by any Credit Party of this Amendment to the extent a party hereto nor
compliance by it with the terms and provisions thereof, nor the consummation by it of the transactions contemplated herein or therein, will (i) contravene in any material respect any applicable provision of any law, statute, rule or regulation,
or any applicable order, writ, injunction or decree of any court or governmental instrumentality, (ii) conflict with or result in any breach of any term, covenant, condition or other provision of, or constitute a default under, or result in the
creation or imposition of (or the obligation to create or impose) any Lien other than any Permitted Lien upon any of the property or assets of such Credit Party or any of its Subsidiaries under, the terms of any material contractual obligation to
which such Credit Party or any of its Subsidiaries is a party or by which they or any of their properties or assets are bound or to which they may be subject, or (iii) violate or conflict with any provision of the memorandum of association and
articles of association, charter, articles or certificate of incorporation, partnership or limited liability company agreement, by-laws, or other applicable governance documents of such Credit Party or any of its Subsidiaries; and 

(e) As of the date hereof, all consents and approvals of, and filings and registrations with, and all other actions of, all
governmental agencies, authorities or instrumentalities required to have been obtained or made by the Credit Parties in order to execute, deliver and perform this Amendment to the extent a party hereto, have been or will have been obtained or made
and are or will be in full force and effect. 
 ARTICLE V. — Miscellaneous 

§ 5.1. Ratification of Agreements. The Credit Agreement, the NDC Guaranty and the NHIL Guaranty, as hereby amended, are hereby
ratified and confirmed in all respects. The Credit Documents, as they may be amended or affected by this Amendment, are hereby ratified and confirmed in all respects by each Credit Party to the extent a party hereto. Any reference to the Credit
Agreement, the NDC Guaranty or the NHIL Guaranty in any Credit Document shall be deemed to refer to such document as amended hereby. The execution, delivery and effectiveness of this Amendment shall not, except as expressly provided herein, operate
as a waiver of any right, power or remedy of Administrative Agent, any Issuing Bank or any Lender under the Credit Agreement or any other Credit Document nor constitute a waiver of any provision of the Credit Agreement or any other Credit Document.

 § 5.2. Survival of Representations. All representations and warranties contained in this Amendment or made in writing by or on
behalf of the Company in connection herewith shall survive the execution and delivery of this Amendment, and shall continue in full force and effect with respect to the date as of which they were made as long as any Obligation is outstanding under
the Credit Agreement or any Commitment thereunder is in effect. 
 § 5.3. Credit Documents. This Amendment is a Credit Document,
and all provisions in the Credit Agreement pertaining to Credit Documents apply hereto. 

  
 9 

 § 5.4. Governing Law. THIS AMENDMENT, AND THE RIGHTS AND DUTIES OF THE PARTIES
THERETO, SHALL BE CONSTRUED IN ACCORDANCE WITH AND GOVERNED BY THE INTERNAL LAWS OF THE STATE OF NEW YORK. 
 § 5.5. Execution in
Counterparts. This Amendment may be executed in any number of counterparts, and by different parties on different counterpart signature pages, each of which when executed shall be deemed an original, but all such counterparts taken together
shall constitute one and the same agreement. This Amendment may be validly executed by facsimile or other electronic transmission. 
 §
5.6. ENTIRE AGREEMENT. THIS WRITTEN AGREEMENT TOGETHER WITH THE OTHER CREDIT DOCUMENTS REPRESENTS THE FINAL AGREEMENT BETWEEN THE PARTIES AND MAY NOT BE CONTRADICTED BY EVIDENCE OF PRIOR, CONTEMPORANEOUS, OR SUBSEQUENT ORAL AGREEMENTS OF THE
PARTIES. THERE ARE NO UNWRITTEN ORAL AGREEMENTS BETWEEN THE PARTIES. 
 [Remainder of page intentionally left blank] 

  
 10 

 IN WITNESS WHEREOF, this Amendment is executed and effective as of the date first written above.

  

			
	 NOBLE CORPORATION, a Cayman Islands

exempted company limited by shares, as Borrower

		
	By:	 	/s/ Alan R. Hay
	Name:	 	Alan R. Hay
	Title:	 	Vice President

 3rd Amendment to 2011 Revolver 

 
			
	 WELLS FARGO BANK,
 NATIONAL
ASSOCIATION,
 as Administrative Agent and a Lender

		
	By:	 	/s/ T. Alan Smith
	Name:	 	T. Alan Smith
	Title:	 	Managing Director

  

			
	BARCLAYS BANK PLC, Lender
		
	By:	 	/s/ Vanessa Kurbatskiy
	Name:	 	Vanessa Kurbatskiy
	Title:	 	Vice President

  

			
	 HSBC BANK USA,
 NATIONAL
ASSOCIATION, Lender

		
	By:	 	/s/ Steven Smith
	Name:	 	Steven Smith
	Title:	 	Director

  

			
	DNB CAPITAL LLC, Lender
		
	By:	 	/s/ Barbara Gronquist
	Name:	 	Barbara Gronquist
	Title:	 	Senior Vice President

  

			
	By:	 	/s/ Florianne Robin
	Name:	 	Florianne Robin
	Title:	 	Vice President

  
 3rd Amendment to
2011 Revolver 

 
			
	SUNTRUST BANK, Lender
		
	By:	 	/s/ Chulley Bogle
	Name:	 	Chulley Bogle
	Title:	 	Vice President

  

			
	 THE BANK OF TOKYO-MITSUBISHI UFJ, LTD.,

Lender

		
	By:	 	/s/ Maria Ferradas
	Name:	 	Maria Ferradas
	Title:	 	Vice President

  

			
	 CREDIT SUISSE AG, CAYMAN ISLANDS

BRANCH, Lender

		
	By:	 	/s/ Kevin Buddhdew
	Name:	 	Kevin Buddhew
	Title:	 	Authorized Signatory

  

			
	By:	 	/s/ Michael Spaight
	Name:	 	Michael Spaight
	Title:	 	Authorized Signatory

  

			
	 DEUTSCHE BANK AG NEW YORK BRANCH,

Lender

		
	By:	 	/s/ Ming K. Chu
	Name:	 	Ming K. Chu
	Title:	 	Vice President

  

			
	By:	 	/s/ Virginia Cosenza
	Name:	 	Virginia Cosenza
	Title:	 	Vice President

  

			
	CITIBANK, N.A., Lender
		
	By:	 	/s/ Robert Malleck
	Name:	 	Robert Malleck
	Title:	 	Managing Director

  
 3rd Amendment to
2011 Revolver 

 
			
	GOLDMAN SACHS BANK USA, Lender
		
	By:	 	/s/ Mark Walton
	Name:	 	Mark Walton
	Title:	 	Authorized Signatory

  

			
	BNP PARIBAS, Lender
		
	By:	 	/s/ Melissa Balley
	Name:	 	Melissa Balley
	Title:	 	Director

  

			
	By:	 	/s/ David Reynolds
	Name:	 	David Reynolds
	Title:	 	Vice President

  

			
	BANK OF AMERICA, N.A., Lender
		
	By:	 	/s/ Kate Czepiel
	Name:	 	Kate Czepiel
	Title:	 	Assistant Vice President

  

			
	LLOYDS BANK PLC, Lender
		
	By:	 	/s/ Stephen Giacolone
	Name:	 	Stephen Giacolone
	Title:	 	Assistant Vice President

  

			
	By:	 	/s/ Karen Weich
	Name:	 	Karen Weich
	Title:	 	Vice President

  

			
	MIZUHO BANK, LTD., Lender
		
	By:	 	/s/ Leon Mo
	Name:	 	Leon Mo
	Title:	 	Authorized Signatory

  
 3rd Amendment to
2011 Revolver 

 
			
	STANDARD CHARTERED BANK, Lender
		
	By:	 	/s/ Johanna Minaya
	Name:	 	Johanna Minaya
	Title:	 	Associate Director
		 	Capital Markets

  

			
	By:	 	/s/ Robert K. Reddington
	Name:	 	Robert K. Reddinton
	Title:	 	Credit Documentation Manager
		 	Credit Documentation Unit, WB Legal-Americas

  

			
	JPMORGAN CHASE BANK, N.A., Lender
		
	By:	 	/s/ Muhammad Hasan
	Name:	 	Muhammad Hasan
	Title:	 	Vice President

  

			
	SUMITOMO MITSUI BANKING CORPORATION, Lender
		
	By:	 	/s/ James D. Weinstein
	Name:	 	James D. Weinstein
	Title:	 	Managing Director

  
 3rd Amendment to
2011 Revolver 

 CONSENT AND AGREEMENT 

Each undersigned Guarantor hereby (i) consents to the provisions of this Amendment, including the amendments to its Guaranty provided for
herein, (ii) ratifies and confirms its Guaranty of the Obligations, as amended hereby, (iii) agrees that all of its respective obligations and covenants under such Guaranty, as amended hereby, shall remain unimpaired by the execution and
delivery of this Amendment, and (iv) agrees that such Guaranty, as amended hereby, shall remain in full force and effect. 
  

			
	NOBLE DRILLING CORPORATION
		
	By:	 	/s/ Dennis J. Lubojacky
		 	Name: Dennis J. Lubojacky
		 	Title:   President

  

			
	NOBLE HOLDING INTERNATIONAL LIMITED
		
	By:	 	/s/ Alan R. Hay
		 	Name: Alan R. Hay
		 	Title:   Director

  
 3rd Amendment to
2011 Revolver

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