Document:

EX-4.2

 Exhibit 4.2 

Execution Version 
  

 
  

 
  

WHITING PETROLEUM CORPORATION, 

THE GUARANTOR NAMED ON THE SIGNATURE PAGE HEREOF 

and 
 THE BANK OF NEW YORK MELLON
TRUST COMPANY, N.A., 
 As Trustee 

FIRST SUPPLEMENTAL INDENTURE 

dated as of September 12, 2013 

to 
 SENIOR INDENTURE 

dated as of September 12, 2013 

Providing for Issuance of 
 5.000%
SENIOR NOTES DUE 2019 
  
  
  

 
  

 TABLE OF CONTENTS 

 

							
	 	 	 	  	Page	 
	ARTICLE 1 DEFINITIONS AND INCORPORATION BY REFERENCE	  			
	Section 1.01.	 	Definitions.	  	 	2	  
	Section 1.02.	 	Other Definitions.	  	 	25	  
	Section 1.03.	 	Rules of Construction.	  	 	26	  
	ARTICLE 2 THE NOTES	  			
	Section 2.01.	 	Creation and Form.	  	 	26	  
	Section 2.02.	 	Execution and Authentication.	  	 	26	  
	Section 2.03.	 	Outstanding Notes.	  	 	27	  
	Section 2.04.	 	CUSIP Numbers.	  	 	27	  
	Section 2.05.	 	Issuance of Additional Notes.	  	 	27	  
	ARTICLE 3 REDEMPTION AND PURCHASE	  			
	Section 3.01.	 	Redemption and Purchase.	  	 	27	  
	Section 3.02.	 	Optional Redemption.	  	 	28	  
	Section 3.03.	 	Mandatory Redemption.	  	 	28	  
	Section 3.04.	 	Offer to Purchase by Application of Excess Proceeds.	  	 	28	  
	ARTICLE 4 COVENANTS	  			
	Section 4.01.	 	Payment of Notes	  	 	30	  
	Section 4.02.	 	Maintenance of Office or Agency	  	 	30	  
	Section 4.03.	 	Reports	  	 	31	  
	Section 4.04.	 	Compliance Certificate	  	 	31	  
	Section 4.05.	 	Taxes	  	 	32	  
	Section 4.06.	 	Stay, Extension and Usury Laws	  	 	32	  
	Section 4.07.	 	Limitation on Restricted Payments	  	 	32	  
	Section 4.08.	 	Limitation on Dividend and Other Payment Restrictions Affecting Subsidiaries	  	 	36	  
	Section 4.09.	 	Limitation on Incurrence of Indebtedness and Issuance of Preferred Stock	  	 	37	  
	Section 4.10.	 	Limitation on Asset Sales.	  	 	40	  
	Section 4.11.	 	Limitation on Transactions with Affiliates	  	 	42	  
	Section 4.12.	 	Limitation on Liens	  	 	44	  
	Section 4.13.	 	Additional Subsidiary Guarantees	  	 	44	  
	Section 4.14.	 	Corporate Existence	  	 	45	  
	Section 4.15.	 	Offer to Repurchase Upon Change of Control	  	 	45	  
	Section 4.16.	 	No Inducements	  	 	48	  
	Section 4.17.	 	Designation of Restricted and Unrestricted Subsidiaries.	  	 	48	  
	Section 4.18.	 	Covenant Termination.	  	 	48	  
	ARTICLE 5 SUCCESSORS	  			
	Section 5.01.	 	Merger, Consolidation, or Sale of Assets	  	 	49	  
	Section 5.02.	 	Successor Entity Substituted	  	 	50	  
	ARTICLE 6 DEFAULTS AND REMEDIES	  			
	Section 6.01.	 	Events of Default	  	 	50	  
	Section 6.02.	 	Acceleration	  	 	52	  

  
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	Section 6.03.	 	[Intentionally Omitted.]	  	 	52	  
	Section 6.04.	 	Waiver of Usury, Stay or Extension of Laws	  	 	52	  
	ARTICLE 7 TRUSTEE; REPORTS	  			
	Section 7.01.	 	Notice of Defaults	  	 	53	  
	Section 7.02.	 	[Intentionally Omitted.]	  	 	53	  
	Section 7.03.	 	Compensation and Reimbursement.	  	 	53	  
	Section 7.04.	 	Reports by Company and Subsidiary Guarantors	  	 	54	  
	ARTICLE 8 LEGAL DEFEASANCE AND COVENANT DEFEASANCE	  			
	Section 8.01.	 	Option to Effect Legal Defeasance or Covenant Defeasance	  	 	54	  
	Section 8.02.	 	Legal Defeasance and Discharge	  	 	54	  
	Section 8.03.	 	Covenant Defeasance	  	 	55	  
	Section 8.04.	 	Conditions to Legal or Covenant Defeasance	  	 	55	  
	Section 8.05.	 	Deposited Money and Government Securities to be Held in Trust; Other Miscellaneous Provisions	  	 	57	  
	Section 8.06.	 	Repayment to Company	  	 	57	  
	Section 8.07.	 	Reinstatement	  	 	58	  
	Section 8.08.	 	Discharge.	  	 	58	  
	ARTICLE 9 AMENDMENT, SUPPLEMENT AND WAIVER	  			
	Section 9.01.	 	Without Consent of Holders of Notes	  	 	58	  
	Section 9.02.	 	With Consent of Holders of Notes	  	 	59	  
	Section 9.03.	 	Revocation and Effect of Consents	  	 	61	  
	ARTICLE 10 GUARANTEES OF NOTES	  			
	Section 10.01.	 	Subsidiary Guarantees	  	 	62	  
	Section 10.02.	 	Notation of Subsidiary Guarantees	  	 	63	  
	Section 10.03.	 	Guarantors May Consolidate, Etc., on Certain Terms	  	 	63	  
	Section 10.04.	 	Releases of Subsidiary Guarantees	  	 	64	  
	Section 10.05.	 	Limitation on Guarantor Liability	  	 	64	  
	Section 10.06.	 	“Trustee” to Include Paying Agent	  	 	64	  
	ARTICLE 11 MISCELLANEOUS	  			
	Section 11.01.	 	First Supplemental Indenture Controls	  	 	65	  
	Section 11.02.	 	No Personal Liability of Directors, Officers, Employees and Stockholders	  	 	65	  
	Section 11.03.	 	Governing Law; Waiver of Jury Trial; Submission to Jurisdiction	  	 	65	  
	Section 11.04.	 	Force Majeure.	  	 	65	  
	Section 11.05.	 	No Adverse Interpretation of Other Agreements	  	 	66	  
	Section 11.06.	 	Table of Contents and Headings.	  	 	66	  
	Section 11.07.	 	Counterparts	  	 	66	  

  
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 EXHIBITS 
  

							
	 EXHIBIT A
	 	 Form of Note
	  	 	A-1	  
	 EXHIBIT B
	 	 Form of Supplemental Indenture
	  	 	B-1	  

  
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 This First Supplemental Indenture, dated as of September 12, 2013 (this “First
Supplemental Indenture”), supplements and amends the Senior Indenture, dated as of September 12, 2013 (the “Original Indenture”), among Whiting Petroleum Corporation, a Delaware corporation (the “Company”), the
Guarantor listed on the signature page hereof and The Bank of New York Mellon Trust Company, N.A., a national banking association, as trustee (the “Trustee”). 

RECITATIONS OF THE COMPANY 

WHEREAS, the Company, the Guarantors and the Trustee have heretofore executed and delivered the Original Indenture to provide for the issuance
of the Company’s senior debt securities to be issued in one or more series; 
 WHEREAS, Section 901 of the Original Indenture
provides, among other things, that the Company, the Guarantors and the Trustee may without the consent of Holders enter into indentures supplemental to the Original Indenture to, among other things, (a) add to, change or eliminate any of the
provisions of the Original Indenture in respect of one or more series of Securities, provided that any such addition, change or elimination (i) shall neither (A) apply to any Security of any series created prior to the execution of such
supplemental indenture and entitled to the benefit of such provision nor (B) modify the rights of the Holder of any such Security with respect to such provision or (ii) shall become effective only when there is no such Security Outstanding
and (b) establish the form or terms of Securities of any series as permitted by Sections 201 and 301; 
 WHEREAS, the Company
desires to provide for the issuance of a series of Securities to be designated as the “5.000% Senior Notes due 2019” (the “Notes”), and to set forth the form and terms thereof; 

WHEREAS, the Company proposes in and by this First Supplemental Indenture to supplement and amend the Original Indenture, but only insofar as
it will apply to the Notes; and 
 WHEREAS, all action on the part of the Company necessary to authorize the creation and issuance of the
Notes, and all action on the part of Whiting necessary to authorize its guarantee of the Notes under the Original Indenture and this First Supplemental Indenture (the Original Indenture, as supplemented and amended by this First Supplemental
Indenture, being hereinafter called the “Indenture”), have been duly taken. 
 NOW, THEREFORE, THIS FIRST SUPPLEMENTAL
INDENTURE WITNESSETH: 
 That, in order to establish the designation, form and terms of, and to authorize the authentication and
delivery of the Notes, and in consideration of the acceptance of the Notes by the Holders thereof and of other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the parties hereto hereby agree as follows:

  
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 ARTICLE 1 

DEFINITIONS AND INCORPORATION 
 BY
REFERENCE 
 Section 1.01. Definitions. 

(a) Capitalized terms used herein and not otherwise defined shall have the respective meanings assigned thereto in the Original Indenture. 

(b) Section 101 of the Original Indenture is amended and supplemented, with respect to the Notes, by inserting or restating, as the case
may be, in their appropriate alphabetical position, the following definitions: 
 “ACNTA” means (without duplication), as of the
date of determination: 
 (1) the sum of: 

(a) discounted future net revenue from proved crude oil and natural gas reserves of the Company and its Restricted Subsidiaries
calculated in accordance with SEC guidelines before any state or federal income taxes, as estimated in a reserve report prepared as of the end of the Company’s most recently completed fiscal year, which reserve report is prepared or reviewed by
independent petroleum engineers as to reserves accounting for at least 80% of all such discounted future net revenue and by the Company’s petroleum engineers with respect to any other reserves covered by such report, as increased by, as of the
date of determination, the discounted future net revenue from: 
 (i) estimated proved crude oil and natural gas reserves of
the Company and its Restricted Subsidiaries attributable to acquisitions consummated since the date of such year-end reserve report, and 

(ii) estimated crude oil and natural gas reserves of the Company and its Restricted Subsidiaries attributable to extensions,
discoveries and other additions and upward determinations of estimates of proved crude oil and natural gas reserves (including previously estimated development costs incurred during the period and the accretion of discount since the prior year end)
due to exploration, development or exploitation, production or other activities which reserves were not reflected in such year-end reserve report, 

in each case calculated in accordance with SEC guidelines (utilizing the prices utilized in such year-end reserve report), and decreased by, as
of the date of determination, the discounted future net revenue attributable to 
 (iii) estimated proved crude oil and
natural gas reserves of the Company and its Restricted Subsidiaries reflected in such year-end reserve report produced or disposed of since the date of such year-end reserve report and 

  
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 (iv) reductions in the estimated proved crude oil and natural gas reserves of
the Company and its Restricted Subsidiaries reflected in such year-end reserve report since the date of such year-end reserve report attributable to downward determinations of estimates of proved crude oil and natural gas reserves due to
exploration, development or exploitation, production or other activities conducted or otherwise occurring since the date of such year-end reserve report, 

in each case calculated in accordance with SEC guidelines (utilizing the prices utilized in such year-end reserve report); provided, however,
that, in the case of each of the determinations made pursuant to clauses (i) through (iv), such increases and decreases shall be as estimated by the Company’s engineers, except that if as a result of such acquisitions, dispositions,
discoveries, extensions or revisions, there is a Material Change, then such increases and decreases in the discounted future net revenue shall be confirmed in writing by an independent petroleum engineer; 

(b) the capitalized costs that are attributable to crude oil and natural gas properties of the Company and its Restricted
Subsidiaries to which no proved crude oil and natural gas reserves are attributed, based on the Company’s books and records as of a date no earlier than the date of the Company’s latest annual or quarterly financial statements; 

(c) the Net Working Capital on a date no earlier than the date of the Company’s latest annual or quarterly financial
statements; and 
 (d) the greater of (I) the net book value on a date no earlier than the date of the Company’s
latest annual or quarterly financial statements or (II) the appraised value, as estimated by independent appraisers, of other tangible assets of the Company and its Restricted Subsidiaries as of a date no earlier than the date of the Company’s
latest audited financial statements; 
 (2) minus, to the extent not otherwise taken into account in the immediately
preceding clause (1), the sum of: 
 (a) minority interests; 

(b) any net gas balancing liabilities of the Company and its Restricted Subsidiaries reflected in the Company’s latest
audited financial statements; 
 (c) the discounted future net revenue, calculated in accordance with SEC guidelines
(utilizing the same prices utilized in the Company’s year-end reserve report), attributable to reserves subject to participation interests, overriding royalty interests or other interests of third parties, pursuant to participation,
partnership, vendor financing or other agreements then in effect, or which otherwise are required to be delivered to third parties; 

(d) the discounted future net revenue, calculated in accordance with SEC guidelines (utilizing the same prices utilized in the
Company’s year-end 

  
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reserve report), attributable to reserves that are required to be delivered to third parties to fully satisfy the obligations of the Company and its Restricted Subsidiaries with respect to
Volumetric Production Payments on the schedules specified with respect thereto; and 
 (e) the discounted future net revenue,
calculated in accordance with SEC guidelines, attributable to reserves subject to Dollar-Denominated Production Payments that, based on the estimates of production included in determining the discounted future net revenue specified in the
immediately preceding clause (1)(a) (utilizing the same prices utilized in the Company’s year-end reserve report), would be necessary to satisfy fully the obligations of the Company and its Restricted Subsidiaries with respect to
Dollar-Denominated Production Payments on the schedules specified with respect thereto. 
 If the Company changes its method of accounting for its oil and
gas properties from the successful efforts method to the full cost method or a similar method of accounting, ACNTA will continue to be calculated as if the Company were still using the successful efforts method of accounting. 

“Acquired Debt” means, with respect to any specified Person: 

(1) Indebtedness of any other Person existing at the time such other Person was merged with or into or became a Subsidiary of
such specified Person, whether or not such Indebtedness is incurred in connection with, or in contemplation of, such other Person merging with or into, or becoming a Subsidiary of, such specified Person; provided, however, that Indebtedness of such
acquired Person which is redeemed, defeased, retired or otherwise repaid at the time of or substantially contemporaneously with the consummation of the transactions by which such Person merges with or into or becomes a Subsidiary of such Person
shall not be Acquired Debt; and 
 (2) Indebtedness secured by a Lien encumbering any asset acquired by such specified
Person. 
 “Additional Assets” means: 

(1) any assets used or useful in the Oil and Gas Business; 

(2) the Capital Stock of a Person that becomes a Restricted Subsidiary as a result of the acquisition of such Capital Stock by
the Company or another Restricted Subsidiary; or 
 (3) Capital Stock constituting a minority in any Person that at such time
is a Restricted Subsidiary; 
 provided, however, that any such Restricted Subsidiary described in clause (2) or (3) is primarily engaged in the Oil
and Gas Business. 
 “Additional Notes” means, subject to the Company’s compliance with Section 4.09 of the First
Supplemental Indenture, 5.000% Senior Notes due 2019 of the Company as may be 

  
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originally issued from time to time after the Issue Date under the terms of this Indenture, together with all other Notes issued upon registration of transfer of, or in exchange for, such Notes.

 “Affiliate” of any specified Person means any other Person directly or indirectly controlling or controlled by or under
direct or indirect common control with such specified Person. For purposes of this definition, “control,” as used with respect to any Person, means the possession, directly or indirectly, of the power to direct or cause the direction of
the management or policies of such Person, whether through the ownership of voting securities, by agreement or otherwise. For purposes of this definition, the terms “controlling,” “controlled by” and “under common control
with” have correlative meanings. 
 “Applicable Law,” except as the context may otherwise require, means all
applicable laws, rules, regulations, ordinances, judgments, decrees, injunctions, writs and orders of any court or governmental or congressional agency or authority and rules, regulations, orders, licenses and permits of any United States federal,
state, municipal, regional, or other governmental body, instrumentality, agency or authority. 
 “Applicable Premium”
means, with respect to a Note at any Redemption Date, the greater of (x) 1.0% of the principal amount of such Note or (y) the excess of (A) the present value at such Redemption Date of (1) the principal amount of such Note plus
(2) all required interest payments due on such Note through the final maturity date of such Note (without regard to accrued and unpaid interest), computed using a discount rate equal to the Treasury Rate plus 50 basis points, over
(B) the principal amount of such Note. 
 “Asset Sale” means: 

(1) the sale, lease, conveyance or other disposition of any properties or assets (including by way of a Production Payment or
sale and leaseback transaction); provided that the sale, lease, conveyance or other disposition of all or substantially all of the properties or assets of the Company and its Restricted Subsidiaries taken as a whole will be governed by the
provisions of Section 4.15 of the First Supplemental Indenture and/or the provisions of Section 5.01 of the First Supplemental Indenture and not by the provisions of Section 4.10 of the First Supplemental Indenture; and 

(2) the issuance of Equity Interests in any of the Company’s Restricted Subsidiaries or the sale by the Company or any of
the Company’s Restricted Subsidiaries of Equity Interests in any of the Company’s Restricted Subsidiaries (other than directors’ qualifying shares or shares required by applicable law to be held by a Person other than the Company or a
Restricted Subsidiary). 
 Notwithstanding the preceding, the following items will not be deemed to be Asset Sales: 

(1) any single transaction or series of related transactions that involves properties or assets having a fair market value of
less than $15.0 million; 
 (2) a transfer of assets between or among any of the Company and its Restricted
Subsidiaries, 

  
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 (3) an issuance or sale of Equity Interests by a Restricted Subsidiary to the
Company or to another Restricted Subsidiary; 
 (4) the sale, lease or other disposition of equipment, inventory, accounts
receivable or other properties or assets in the ordinary course of business, including, without limitation, any abandonment, farm-in, farm-out, lease or sublease of any oil and gas properties or the forfeiture or other disposition of such properties
pursuant to standard form operating agreements, in each case in the ordinary course of business in a manner customary in the Oil and Gas Business; 

(5) the sale or other disposition of cash or Cash Equivalents; 

(6) a Restricted Payment that is permitted by Section 4.07 of the First Supplemental Indenture or a Permitted Investment;

 (7) any trade or exchange by the Company or any Restricted Subsidiary of oil and gas properties or other properties or
assets for oil and gas properties or other properties or assets owned or held by another Person, provided that the fair market value of the properties or assets traded or exchanged by the Company or such Restricted Subsidiary (together with any
cash) is reasonably equivalent to the fair market value of the properties or assets (together with any cash) to be received by the Company or such Restricted Subsidiary, and provided further that any net cash received must be applied in accordance
with the provisions of Section 4.10 of the First Supplemental Indenture; 
 (8) the creation or perfection of a Lien
(but not the sale or other disposition of the properties or assets subject to such Lien); 
 (9) surrender or waiver of
contract rights or the settlement, release or surrender of contract, tort or other claims of any kind; and 
 (10) any sale
or other disposition of damaged, worn-out or obsolete assets in the ordinary course of business (including the assignment, cancellation or abandonment or other disposition of intellectual property that is, in the reasonable judgment of the Company,
no longer economically practicable to maintain or useful in any material respect in the conduct of the business of the Company and its Restricted Subsidiaries taken as whole). 

“Attributable Debt” in respect of a sale and leaseback transaction means, at the time of determination, the present
value of the obligation of the lessee for net rental payments during the remaining term of the lease included in such sale and leaseback transaction including any period for which such lease has been extended or may, at the option of the lessor, be
extended. Such present value shall be calculated using a discount rate equal to the rate of interest implicit in such transaction, determined in accordance with GAAP. 

“Bankruptcy Law” means Title 11, United States Code, as may be amended from time to time, or any similar federal or
state law for the relief of debtors. 
 “Beneficial Owner” has the meaning assigned to such term in Rule 13d-3 and
Rule 13d-5 under the Exchange Act, except that in calculating the beneficial ownership of any particular 

  
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“person” (as that term is used in Section 13(d)(3) of the Exchange Act), such “person” will be deemed to have beneficial ownership of all securities that such
“person” has the right to acquire by conversion or exercise of other securities, whether such right is currently exercisable or is exercisable only upon the occurrence of a subsequent condition. The terms “Beneficially Owns” and
“Beneficially Owned” have correlative meanings. 
 “Board of Directors” means: 

(1) with respect to a corporation, the board of directors of the corporation or any committee thereof duly authorized to act on
behalf of such board; 
 (2) with respect to a partnership, the Board of Directors of the general partner of the partnership;

 (3) with respect to a limited liability company, the Board of Directors of the managing member, if the managing member is
an entity, or the managing member or members or any controlling committee of managing members thereof, if the managing members are individuals; and 

(4) with respect to any other Person, the board or committee of such Person serving a similar function. 

“Board Resolution” means a copy of a resolution certified by the Secretary or an Assistant Secretary of the applicable Person
to have been duly adopted by the Board of Directors of such Person and to be in full force and effect on the date of such certification, and delivered to the Trustee. 

“Business Day” means each day that is not a Saturday, Sunday or other day on which banking institutions in Chicago, Illinois,
Denver, Colorado or New York, New York or another place of payment are authorized or required by law to close. 
 “Capital Lease
Obligation” means, at the time any determination is to be made, the amount of the liability in respect of a capital lease that would at that time be required to be capitalized on a balance sheet in accordance with GAAP. 

“Capital Stock” means: 

(1) in the case of a corporation, corporate stock; 

(2) in the case of an association or business entity, any and all shares, interests, participations, rights or other
equivalents (however designated) of corporate stock; 
 (3) in the case of a partnership or limited liability company,
partnership or membership interests (whether general or limited); and 
 (4) any other interest or participation that confers
on a Person the right to receive a share of the profits and losses of, or distributions of assets of, the issuing Person. 

  
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 “Cash Equivalents” means: 

(1) United States dollars; 

(2) securities issued or directly and fully guaranteed or insured by the United States government or any agency or
instrumentality of the United States government (provided that the full faith and credit of the United States is pledged in support of those securities) having maturities of not more than one year from the date of acquisition; 

(3) certificates of deposit and eurodollar time deposits with maturities of one year or less from the date of acquisition,
bankers’ acceptances with maturities not exceeding one year and overnight bank deposits, in each case, with any lender party to the Credit Agreement or with any domestic commercial bank; 

(4) repurchase obligations with a term of not more than seven days for underlying securities of the types described in
clauses (2) and (3) above entered into with any financial institution meeting the qualifications specified in clause (3) above; 

(5) commercial paper having one of the two highest ratings obtainable from Moody’s or S&P and in each case maturing
within one year after the date of acquisition; 
 (6) money market funds the assets of which primarily constitute Cash
Equivalents of the kinds described in clauses (1) through (5) of this definition; and 
 (7) repurchase obligations with
a term of not more than seven days for underlying securities of the types described in clause (1) above entered into with any financial institution meeting the qualifications specified in clause (3) above. 

“Change of Control” means the occurrence of any of the following: 

(1) the direct or indirect sale, lease, transfer, conveyance or other disposition (other than by way of merger or
consolidation), in one or a series of related transactions, of all or substantially all of the properties or assets (including Capital Stock of the Restricted Subsidiaries) of the Company and its Restricted Subsidiaries taken as a whole, to any
“person” (as that term is used in Section 13(d)(3) of the Exchange Act), which occurrence is followed by a Rating Decline within 90 days thereof; 

(2) the adoption of a plan relating to the liquidation or dissolution of the Company; 

(3) the consummation of any transaction (including, without limitation, any merger or consolidation) the result of which is
that any “person” (as that term is used in Section 13(d)(3) of the Exchange Act) becomes the Beneficial Owner, directly or indirectly, of more than 50% of the Voting Stock of the Company, measured by voting power rather than number of
shares, which occurrence is followed by a Rating Decline within 90 days thereof; or 

  
 8 

 (4) the first day on which a majority of the members of the Board of Directors of
the Company are not Continuing Directors, which occurrence is followed by a Rating Decline within 90 days thereof. 

“Code” means the Internal Revenue Code of 1986, as amended. 

“Commission” or “SEC” means the Securities and Exchange Commission. 

“Consolidated Cash Flow” means, with respect to any specified Person for any period, the Consolidated Net Income of such
Person for such period plus: 
 (1) an amount equal to any extraordinary loss plus any net loss realized by such Person or
any of its Restricted Subsidiaries in connection with an Asset Sale, to the extent such losses were deducted in computing such Consolidated Net Income; plus 

(2) provision for taxes based on income or profits of such Person and its Restricted Subsidiaries for such period, to the
extent that such provision for taxes was deducted in computing such Consolidated Net Income; plus 
 (3) consolidated
interest expense of such Person and its Restricted Subsidiaries for such period, whether paid or accrued and whether or not capitalized (excluding any interest attributable to Dollar-Denominated Production Payments but including, without limitation,
amortization of debt issuance costs and original issue discount, non-cash interest payments, the interest component of any deferred payment obligations, the interest component of all payments associated with Capital Lease Obligations, imputed
interest with respect to Attributable Debt, commissions, discounts and other fees and charges incurred in respect of letter of credit or bankers’ acceptance financings), and net of the effect of all payments made or received pursuant to Hedging
Obligations, to the extent that any such expense was deducted in computing such Consolidated Net Income; plus 
 (4)
depreciation, depletion and amortization (including amortization of intangibles but excluding amortization of prepaid cash expenses that were paid in a prior period), impairment and other non-cash expenses (excluding any such non-cash expense to the
extent that it represents an accrual of or reserve for cash expenses in any future period or amortization of a prepaid cash expense that was paid in a prior period) of such Person and its Restricted Subsidiaries for such period to the extent that
such depreciation, depletion and amortization, impairment and other non-cash expenses were deducted in computing such Consolidated Net Income; plus 

(5) unrealized non-cash losses resulting from foreign currency balance sheet adjustments required by GAAP to the extent such
losses were deducted in computing such Consolidated Net Income; minus 
 (6) non-cash items increasing such Consolidated Net
Income for such period, other than items that were accrued in the ordinary course of business; minus (to the extent included in determining Consolidated Net Income); and 

  
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 (7) the sum of (x) the amount of deferred revenues that are amortized during
such period and are attributable to reserves that are subject to Volumetric Production Payments and (y) amounts recorded in accordance with GAAP as repayments of principal and interest pursuant to Dollar-Denominated Production Payments, 

in each case, on a consolidated basis and determined in accordance with GAAP. 

“Consolidated Net Income” means, with respect to any specified Person for any period, the aggregate of the Net Income of such
Person and its Restricted Subsidiaries for such period, on a consolidated basis, determined in accordance with GAAP; provided that: 

(1) the Net Income (but not loss) of any Person that is not a Restricted Subsidiary or that is accounted for by the equity
method of accounting will be included, but only to the extent of the amount of dividends or distributions paid in cash to the specified Person or a Restricted Subsidiary of the Person; 

(2) the Net Income of any Restricted Subsidiary will be excluded to the extent that the declaration or payment of dividends or
similar distributions by that Restricted Subsidiary of that Net Income is not at the date of determination permitted without any prior governmental approval (that has not been obtained) or, directly or indirectly, by operation of the terms of its
charter or any agreement, instrument, judgment, decree, order, statute, rule or governmental regulation applicable to that Restricted Subsidiary or its stockholders, partners or members; 

(3) the cumulative effect of a change in accounting principles will be excluded; 

(4) income resulting from transfers of assets (other than cash) between the Company or any of its Restricted Subsidiaries, on
the one hand, and an Unrestricted Subsidiary, on the other hand, will be excluded; 
 (5) any write-downs of non-current
assets will be excluded; provided that any ceiling limitation write-downs under Commission guidelines shall be treated as capitalized costs, as if such write-downs had not occurred; and 

(6) any unrealized non-cash gains or losses or charges in respect of hedge or non-hedge derivatives (including those resulting
from the application of FAS 133 (now codified as FASB Accounting Standards Codification Topic 815)) will be excluded. 
 In addition,
notwithstanding the preceding, for the purposes of Section 4.07 of the First Supplemental Indenture only, there shall be excluded from Consolidated Net Income any nonrecurring charges relating to any premium or penalty paid, write off of
deferred finance costs or other charges in connection with redeeming or retiring any Indebtedness prior to its Stated Maturity. 

“Continuing Directors” means, as of any date of determination, any member of the Board of Directors of the Company who: 

(1) was a member of such Board of Directors on the Issue Date; or 

  
 10 

 (2) was nominated for election or elected to such Board of Directors with the
approval of a majority of the Continuing Directors who were members of such Board at the time of such nomination or election. 

“Corporate Trust Office” means the office of the Trustee at which at any particular time its corporate trust business in
Chicago, Illinois shall be principally administered, which office as of the date of this instrument is located at 2 North LaSalle Street, Suite 1020, Chicago, IL 60602, except that with respect to presentation of Notes for payment or for
registration of transfer or exchange, such term shall mean the office or agency of the Trustee at which at any particular time its corporate agency business shall be conducted, which office at the date of this instrument is located at
101 Barclay Street, New York, New York 10286; Attention: Corporate Trust Division – Corporate Finance Unit, or, in the case of any of such offices or agency, such other address as the Trustee may designate from time to time by notice to
the Holders and the Company. 
 “Credit Agreement” means that certain Fifth Amended and Restated Credit Agreement, dated as
of October 15, 2010, as amended, among Whiting, the Company and the financial institutions parties thereto, providing for revolving credit borrowings, including any related notes, guarantees, collateral documents, instruments and agreements
executed in connection therewith, and in each case as amended, restated, modified, renewed, refunded, replaced or refinanced from time to time. 

“Credit Facilities” means one or more debt facilities (including, without limitation, the Credit Agreement), commercial paper
facilities or secured capital markets financings, in each case with banks or other institutional lenders or institutional investors providing for revolving credit loans, term loans, receivables financing (including through the sale of receivables to
such lenders or to special purpose entities formed to borrow from (or sell receivables to) such lenders against such receivables), letters of credit or secured capital markets financings, in each case, as amended, restated, modified, renewed,
refunded, replaced or refinanced (including refinancing with any capital markets transaction) in whole or in part from time to time. 

“Custodian” means any receiver, trustee, assignee, liquidator, sequestrator or similar official under any Bankruptcy Law.

 “Default” means any event that is, or with the passage of time or the giving of notice or both would be, an Event of
Default. 
 “Disqualified Stock” means any Capital Stock that, by its terms (or by the terms of any security into which it
is convertible, or for which it is exchangeable, in each case at the option of the holder of the Capital Stock), or upon the happening of any event, matures or is mandatorily redeemable, pursuant to a sinking fund obligation or otherwise, or
redeemable at the option of the holder of the Capital Stock, in whole or in part, on or prior to the date that is 91 days after the date on which the Notes mature. Notwithstanding the preceding sentence, any Capital Stock that would constitute
Disqualified Stock solely because the holders of the Capital Stock have the right to require the Company to repurchase or redeem such Capital Stock upon the occurrence of a change of control or an asset sale will not constitute Disqualified Stock if
the terms of such Capital Stock provide that the Company may not repurchase or redeem any such Capital Stock pursuant to such provisions unless such repurchase or redemption complies with Section 4.07 of the First Supplemental Indenture. 

  
 11 

 “Dollar-Denominated Production Payments” means production payment obligations
recorded as liabilities in accordance with GAAP, together with all undertakings and obligations in connection therewith. 

“Domestic Subsidiary” means any Restricted Subsidiary of the Company other than a Foreign Subsidiary. 

“Equity Interests” means Capital Stock and all warrants, options or other rights to acquire Capital Stock (but excluding any
debt security that is convertible into, or exchangeable for, Capital Stock). 
 “Existing Indebtedness” means the aggregate
principal amount of Indebtedness of the Company and its Restricted Subsidiaries (other than Indebtedness under the Credit Agreement which is considered incurred under the first paragraph of Section 4.09 of the First Supplemental Indenture) in
existence on the Issue Date, until such amounts are repaid. 
 “First Supplemental Indenture” means this First Supplemental
Indenture, dated as of the Issue Date, among the Company, the Guarantor named on the signature page hereof and the Trustee relating to the Notes, as it may be amended from time to time in accordance with the Indenture. 

“Fixed Charge Coverage Ratio” means with respect to any specified Person for any four-quarter reference period, the ratio of
the Consolidated Cash Flow of such Person for such period to the Fixed Charges of such Person for such period. In the event that the specified Person or any of its Restricted Subsidiaries incurs, assumes, guarantees, repays, repurchases or redeems
any Indebtedness (other than ordinary working capital borrowings) or issues, repurchases or redeems preferred stock subsequent to the commencement of the applicable four-quarter reference period and on or prior to the date on which the event for
which the calculation of the Fixed Charge Coverage Ratio is made (the “Calculation Date”), then the Fixed Charge Coverage Ratio will be calculated giving pro forma effect to such incurrence, assumption, guarantee, repayment, repurchase or
redemption of Indebtedness, or such issuance, repurchase or redemption of preferred stock, and the use of the proceeds therefrom as if the same had occurred at the beginning of such period. 

In addition, for purposes of calculating the Fixed Charge Coverage Ratio: 

(1) acquisitions that have been made by the specified Person or any of its Restricted Subsidiaries, including through mergers
or consolidations and including any related financing transactions, subsequent to the commencement of the applicable four-quarter reference period and on or prior to the Calculation Date will be given pro forma effect as if they had occurred on the
first day of such period, including any Consolidated Cash Flow and any pro forma expense and cost reductions that have occurred or are reasonably expected to occur, in the reasonable judgment of the chief financial or accounting officer of the
Company (regardless of whether those cost savings or operating improvements could then be reflected in pro forma financial statements in accordance with Regulation S-X promulgated under the Securities Act or any other regulation or policy of
the Commission related thereto); 

  
 12 

 (2) the Consolidated Cash Flow attributable to discontinued operations, as
determined in accordance with GAAP, and operations or businesses disposed of prior to the Calculation Date, will be excluded; and 

(3) the Fixed Charges attributable to discontinued operations, as determined in accordance with GAAP, and operations or
businesses disposed of prior to the Calculation Date, will be excluded, but only to the extent that the obligations giving rise to such Fixed Charges will not be obligations of the specified Person or any of its Restricted Subsidiaries following the
Calculation Date. 
 “Fixed Charges” means, with respect to any specified Person for any period, the sum, without
duplication, of: 
 (1) the consolidated interest expense of such Person and its Restricted Subsidiaries for such period,
whether paid or accrued (excluding any interest attributable to Dollar-Denominated Production Payments but including, without limitation, amortization of debt issuance costs and original issue discount, non-cash interest payments, the interest
component of any deferred payment obligations, the interest component of all payments associated with Capital Lease Obligations, imputed interest with respect to Attributable Debt, commissions, discounts and other fees and charges incurred in
respect of letter of credit or bankers’ acceptance financings), and net of the effect of all payments made or received pursuant to Hedging Obligations; plus 

(2) the consolidated interest expense of such Person and its Restricted Subsidiaries that was capitalized during such period;
plus 
 (3) any interest expense on Indebtedness of another Person that is guaranteed by such Person or one of its Restricted
Subsidiaries or secured by a Lien on assets of such Person or one of its Restricted Subsidiaries, whether or not such guarantee or Lien is called upon; plus 

(4) all dividends, whether paid or accrued and whether or not in cash, on any series of preferred stock of such Person or any
of its Restricted Subsidiaries, other than dividends on Equity Interests payable solely in Equity Interests of the Company (other than Disqualified Stock) or to the Company or a Restricted Subsidiary of the Company, 

in each case, on a consolidated basis and in accordance with GAAP. 

“Foreign Subsidiary” means any Restricted Subsidiary of the Company that was not formed under the laws of the United States
or any state of the United States or the District of Columbia and that conducts substantially all of its operations outside the United States. 

“GAAP” means generally accepted accounting principles in the United States, which are in effect on the Issue Date. 

  
 13 

 “Government Securities” means direct obligations of, or obligations guaranteed
by, the United States of America for the payment of which guarantee or obligations the full faith and credit of the United States is pledged. 

The term “guarantee” means a guarantee other than by endorsement of negotiable instruments for collection in the ordinary
course of business, direct or indirect, in any manner including, without limitation, by way of a pledge of assets or through letters of credit or reimbursement agreements in respect thereof, of all or any part of any Indebtedness. When used as a
verb, “guarantee” has a correlative meaning. 
 “Guarantor” or “Subsidiary Guarantor” means
(a) Whiting, (b) any other Restricted Subsidiary of the Company that becomes a Guarantor of the Notes by executing a supplement to this Indenture in accordance with Section 4.13 or 10.03 of the First Supplemental Indenture and
(c) the respective successors and assigns of such Restricted Subsidiaries, as required under Article 10 of the First Supplemental Indenture, in each case until such time as any such Restricted Subsidiary shall be released and relieved of
its obligations pursuant to Section 8.02, 8.03 or 10.04 of the First Supplemental Indenture. 
 “Hedging Obligations”
means, with respect to any specified Person, the obligations of such Person incurred in the normal course of business and consistent with past practices and not for speculative purposes under: 

(1) interest rate swap agreements, interest rate cap agreements and interest rate collar agreements entered into with one of
more financial institutions and designed to protect the Person or any of its Restricted Subsidiaries entering into the agreement against fluctuations in interest rates with respect to Indebtedness incurred and not for purposes of speculation; 

(2) foreign exchange contracts and currency protection agreements entered into with one of more financial institutions and
designed to protect the Person or any of its Restricted Subsidiaries entering into the agreement against fluctuations in currency exchanges rates with respect to Indebtedness incurred and not for purposes of speculation; 

(3) any commodity futures contract, commodity option or other similar agreement or arrangement designed to protect against
fluctuations in the price of oil, natural gas or other commodities used, produced, processed or sold by that Person or any of its Restricted Subsidiaries at the time; and 

(4) other agreements or arrangements designed to protect such Person or any of its Restricted Subsidiaries against fluctuations
in interest rates, commodity prices or currency exchange rates. 
 “Holder” or “Noteholder” means a Person
in whose name a Note is registered. 
 “Indebtedness” means, with respect to any specified Person, any indebtedness of such
Person, whether or not contingent: 
 (1) in respect of borrowed money; 

  
 14 

 (2) evidenced by bonds, notes, debentures or similar instruments or letters of
credit (or reimbursement agreements in respect thereof); 
 (3) in respect of bankers’ acceptances; 

(4) representing Capital Lease Obligations; 

(5) representing the balance deferred and unpaid of the purchase price of any property, except any such balance that
constitutes an accrued expense or trade payable; or 
 (6) representing any Hedging Obligations, 

if and to the extent any of the preceding items (other than letters of credit and Hedging Obligations) would appear as a liability upon a balance sheet of the
specified Person prepared in accordance with GAAP. In addition, the term “Indebtedness” includes all Indebtedness of others secured by a Lien on any asset of the specified Person (whether or not such Indebtedness is assumed by the
specified Person) and, to the extent not otherwise included, the guarantee by the specified Person of any Indebtedness of any other Person (including, with respect to any Production Payment, any warranties or guarantees of production or payment by
such Person with respect to such Production Payment, but excluding other contractual obligations of such Person with respect to such Production Payment). Subject to the preceding sentence, neither Dollar-Denominated Production Payments nor
Volumetric Production Payments shall be deemed to be Indebtedness. 
 The amount of any Indebtedness outstanding as of any date will be:

 (1) the accreted value of the Indebtedness, in the case of any Indebtedness issued with original issue discount; 

(2) in the case of any Hedging Obligation, the termination value of the agreement or arrangement giving rise to such Hedging
Obligation that would be payable by such Person at such date; and 
 (3) the principal amount of the Indebtedness, together
with any interest on the Indebtedness that is more than 30 days past due, in the case of any other Indebtedness. 
 “Investment
Grade Rating” means a rating equal to or higher than “Baa3” or the equivalent) by Moody’s and “BBB-” (or the equivalent) by S&P. 

“Initial Notes” means the Notes issued on the Issue Date, together with all other Notes issued upon registration of transfer
of, or in exchange for, such Notes. 
 “Investments” means, with respect to any Person, all direct or indirect investments
by such Person in other Persons (including Affiliates) in the forms of loans (including guarantees or other obligations), advances or capital contributions (excluding commission, travel and similar advances to officers and employees made in the
ordinary course of business), purchases or other acquisitions for consideration of Indebtedness, Equity Interests or other securities, together with all items that are or would be classified as investments on a balance sheet prepared in accordance
with GAAP. If the Company or any Restricted Subsidiary of the Company sells or otherwise 

  
 15 

 
disposes of any Equity Interests of any direct or indirect Restricted Subsidiary of the Company such that, after giving effect to any such sale or disposition, such Person is no longer a
Restricted Subsidiary of the Company, the Company will be deemed to have made an Investment on the date of any such sale or disposition in an amount equal to the fair market value of the Equity Interests of such Restricted Subsidiary not sold or
disposed of in an amount determined as provided in the final paragraph of Section 4.07 of the First Supplemental Indenture. The acquisition by the Company or any Subsidiary of the Company of a Person that holds an Investment in a third Person
will be deemed to be an Investment made by the Company or such Subsidiary in such third Person in an amount equal to the fair market value of the Investment held by the acquired Person in such third Person on the date of any such acquisition in an
amount determined as provided in the final paragraph of Section 4.07 of the First Supplemental Indenture. 
 “Issue
Date” means September 12, 2013. 
 “Legal Holiday” means any calendar day other than a Business Day. If a
payment date is a Legal Holiday, payment may be made on the next succeeding day that is not a Legal Holiday, and no interest shall accrue for the intervening period. 

“Lien” means, with respect to any asset, any mortgage, lien, pledge, charge, security interest or encumbrance of any kind in
respect of such asset, whether or not filed, recorded or otherwise perfected under Applicable Law, including any conditional sale or other title retention agreement, any lease in the nature thereof, any option or other agreement to sell or give a
security interest in and any filing of or agreement to give any financing statement under the Uniform Commercial Code (or equivalent statutes) of any jurisdiction other than a precautionary financing statement not intended as a security agreement.

 “Material Change” means an increase or decrease (excluding changes that result solely from changes in prices and changes
resulting from the incurrence of previously estimated future development costs) of more than 25% during a fiscal quarter in the discounted future net revenues from proved crude oil and natural gas reserves of the Company and its Restricted
Subsidiaries, calculated in accordance with clause (1)(a) of the definition of ACNTA; provided, however, that the following will be excluded from the calculation of Material Change: 

(1) any acquisitions during the fiscal quarter of oil and gas reserves that have been estimated by independent petroleum
engineers and with respect to which a report or reports of such engineers exist; and 
 (2) any disposition of properties
existing at the beginning of such fiscal quarter that have been disposed of in compliance with Section 4.10 of the First Supplemental Indenture. 

“Material Domestic Subsidiary” means any one Domestic Subsidiary, or any group of two or more Domestic Subsidiaries, that is
not a Guarantor at the time of determination and that at such time has either assets or quarterly revenues in excess of 3.0% of the consolidated assets or quarterly revenues of the Company and its Restricted Subsidiaries, in each case based upon the
most recent quarterly financial statements available to the Company. 

  
 16 

 “Moody’s” means Moody’s Investors Service, Inc. or any successor to
the rating agency business thereof. 
 “Net Income” means, with respect to any specified Person, the net income (loss) of
such Person, determined in accordance with GAAP and before any reduction in respect of preferred stock dividends, excluding, however: 

(1) any gain (but not loss), together with any related provision for taxes on such gain (but not loss), realized in connection
with: (a) any Asset Sale; or (b) the disposition of any securities by such Person or any of its Subsidiaries or the extinguishment of any Indebtedness of such Person or any of its Subsidiaries; and 

(2) any extraordinary gain (but not loss), together with any related provision for taxes on such extraordinary gain (but not
loss). 
 “Net Proceeds” means the aggregate cash proceeds and Cash Equivalents received by the Company or any of its
Restricted Subsidiaries in respect of any Asset Sale (including, without limitation, any cash or Cash Equivalents received upon the sale or other disposition of any non-cash consideration received in any Asset Sale), net of: 

(1) the direct costs relating to such Asset Sale, including, without limitation, legal, accounting and investment banking fees,
and sales commissions, and any relocation expenses incurred as a result of the Asset Sale, 
 (2) taxes paid or payable as a
result of the Asset Sale, in each case, after taking into account any available tax credits or deductions and any tax sharing arrangements, 

(3) amounts required to be applied to the repayment of Indebtedness, other than under the Credit Facilities, secured by a Lien
on the properties or assets that were the subject of such Asset Sale, and 
 (4) any reserve for adjustment in respect of the
sale price of such properties or assets established in accordance with GAAP. 
 “Net Working Capital” means: 

(1) all current assets of the Company and its Restricted Subsidiaries, minus 

(2) all current liabilities of the Company and its Restricted Subsidiaries, except current liabilities included in
Indebtedness; 
 in each case, on a consolidated basis and determined in accordance with GAAP. 

“Non-Recourse Debt” means Indebtedness: 

(1) as to which neither the Company nor any of its Restricted Subsidiaries (a) provides credit support of any kind
(including any undertaking, agreement or instrument that would constitute Indebtedness), (b) is directly or indirectly liable as a guarantor or otherwise, or (c) is the lender; 

  
 17 

 (2) no default with respect to which (including any rights that the holders of
the Indebtedness may have to take enforcement action against an Unrestricted Subsidiary) would permit upon notice, lapse of time or both any holder of any other Indebtedness (other than the Notes) of the Company or any of its Restricted Subsidiaries
to declare a default on such other Indebtedness or cause the payment of the Indebtedness to be accelerated or payable prior to its Stated Maturity; and 

(3) as to which the lenders have been notified in writing that they will not have any recourse to the stock or assets of the
Company or any of its Restricted Subsidiaries. 
 “Notes” means the Initial Notes and the Additional Notes, treated as a
single class. 
 “Obligations” means any principal, premium, if any, interest (including interest accruing on or after the
filing of any petition in bankruptcy or for reorganization, whether or not a claim for post-filing interest is allowed in such proceeding), penalties, fees, charges, expenses, indemnifications, reimbursement obligations, damages, guarantees, and
other liabilities or amounts payable under the documentation governing any Indebtedness or in respect thereto. 
 “Officer”
means, with respect to any Person, the Chairman of the Board, the Chief Executive Officer, the President, the Chief Operating Officer, the Chief Financial Officer, the Treasurer, any Assistant Treasurer, the Controller, the Secretary, any Assistant
Secretary or any Vice President of such Person. 
 “Officers’ Certificate” means a certificate signed on behalf of the
Company by two Officers of the Company, one of whom must be the principal executive officer, the principal financial officer, the treasurer or the principal accounting officer of the Company, that meets the requirements of Section 102 hereof.

 “Oil and Gas Business” means: 

(1) the acquisition, exploration, development, operation and disposition of interests in oil, natural gas and other hydrocarbon
properties; 
 (2) the gathering, marketing, treating, processing (but not refining), storage, selling and transporting of
any production from those interests; and 
 (3) any activity necessary, appropriate or incidental to the activities described
above. 
 “Opinion of Counsel” means an opinion from legal counsel who is reasonably acceptable to the Trustee, that meets
the requirements of Section 102 hereof. The counsel may be an employee of or counsel to the Company, any Subsidiary of the Company or the Trustee. 

The term “outstanding,” when used with respect to the Notes, has the meaning provided in Section 2.03 of the First
Supplemental Indenture. 

  
 18 

 “Pari Passu Indebtedness” means, with respect to any Excess Proceeds from Asset
Sales, Indebtedness of the Company or any Guarantor that ranks equally in right of payment with the Notes or the Subsidiary Guarantees, as the case may be, and the terms of which require the Company or such Restricted Subsidiary to apply such Excess
Proceeds to offer to repurchase such Indebtedness. 
 “Permitted Business Investments” means Investments made in the
ordinary course of, and of a nature that is or shall have become customary in, the Oil and Gas Business, including through agreements, transactions, interests or arrangements that permit one to share risk or costs, comply with regulatory
requirements regarding local ownership or satisfy other objectives customarily achieved through the conduct of the Oil and Gas Business jointly with third parties, including without limitation: 

(1) direct or indirect ownership of crude oil, natural gas, other related hydrocarbon and mineral properties or any interest
therein or gathering, transportation, processing, storage or related systems; and 
 (2) the entry into operating agreements,
joint ventures, processing agreements, working interests, royalty interests, mineral leases, farm-in agreements, farm-out agreements, development agreements, production sharing agreements, area of mutual interest agreements, contracts for the sale,
transportation or exchange of crude oil and natural gas and related hydrocarbons and minerals, unitization agreements, pooling arrangements, joint bidding agreements, service contracts, partnership agreements (whether general or limited), or other
similar or customary agreements, transactions, properties, interests or arrangements and Investments and expenditures in connection therewith or pursuant thereto, in each case made or entered into in the ordinary course of the Oil and Gas Business.

 “Permitted Investments” means: 

(1) any Investment in the Company or in a Restricted Subsidiary of the Company; 

(2) any Investment in Cash Equivalents; 

(3) any Investment by the Company or any Restricted Subsidiary of the Company in a Person, if as a result of such Investment:

 (a) such Person becomes a Restricted Subsidiary of the Company; or 

(b) such Person is merged, consolidated or amalgamated with or into, or transfers or conveys substantially all of its
properties or assets to, or is liquidated into, the Company or a Restricted Subsidiary of the Company; 
 (4) any Investment
made as a result of the receipt of non-cash consideration from an Asset Sale that was made pursuant to and in compliance with Section 4.10 of the First Supplemental Indenture; 

  
 19 

 (5) any Investment in any Person solely in exchange for the issuance of Equity
Interests (other than Disqualified Stock) of the Company; 
 (6) any Investments received in compromise of obligations of
trade creditors or customers that were incurred in the ordinary course of business, including pursuant to any plan of reorganization or similar arrangement upon the bankruptcy or insolvency of any trade creditor or customer, or as a result of
foreclosure by the Company or any of its Restricted Subsidiaries with respect to any secured Investment in default; 
 (7)
Hedging Obligations permitted to be incurred under Section 4.09 of the First Supplemental Indenture; 
 (8) Permitted
Business Investments; 
 (9) Investments of a Restricted Subsidiary of the Company acquired after the Issue Date or of a
entity merged or consolidated with or into the Company or such Restricted Subsidiary in a transaction that is not prohibited by the covenant described in Section 5.01 of the First Supplemental Indenture after the Issue Date to the extent that
such Investments were not made in contemplation of such acquisition, merger or consolidation and were in existence on the date of such acquisition, merger or consolidation; and 

(10) other Investments in any Person having an aggregate fair market value (measured on the date each such Investment was made
and without giving effect to subsequent changes in value), when taken together with all other Investments made pursuant to this clause (10) that are at the time outstanding, not to exceed the greater of (a) $250.0 million or
(b) 2.5% of ACNTA. 
 “Permitted Liens” means: 

(1) Liens securing any Indebtedness under any Credit Facility; 

(2) Liens in favor of the Company or the Guarantors; 

(3) Liens on property of a Person existing at the time such Person is merged with or into or consolidated with the Company or
any Restricted Subsidiary of the Company, provided that such Liens were in existence prior to the contemplation of such merger or consolidation and do not extend to any assets other than those of the Person merged into or consolidated with the
Company or the Restricted Subsidiary; 
 (4) Liens on property (including Capital Stock) existing at the time of acquisition
of the property by the Company or any Restricted Subsidiary of the Company, provided that such Liens were in existence prior to the contemplation of such acquisition; 

(5) Liens securing Indebtedness (including Capital Lease Obligations) incurred in connection with the acquisition by the
Company or any Restricted Subsidiary of assets used in the Oil and Gas Business (including the office buildings and other real property used by the Company or such Restricted Subsidiary in conducting its operations), provided that (i) such
Liens attach only to the assets acquired with the proceeds of such Indebtedness, and (ii) such Indebtedness is not in excess of the purchase price of such fixed assets; 

  
 20 

 (6) Liens existing on the Issue Date (other than under the Credit Agreement);

 (7) Liens securing Hedging Obligations of the Company or any of its Restricted Subsidiaries; 

(8) any Lien incurred in the ordinary course of business incidental to the conduct of the business of the Company or the
Restricted Subsidiaries or the ownership of their property (including (a) easements, rights of way and similar encumbrances, (b) rights or title of lessors under leases (other than Capital Lease Obligations), (c) rights of collecting
banks having rights of setoff, revocation, refund or chargeback with respect to money or instruments of the Company or the Restricted Subsidiaries on deposit with or in the possession of such banks, (d) Liens imposed by law, including Liens
under workers’ compensation or similar legislation and mechanics’, carriers’, warehousemen’s, materialmen’s, suppliers’ and vendors’ Liens, (e) Liens incurred to secure performance of obligations with respect
to statutory or regulatory requirements, performance or return-of-money bonds, surety bonds or other obligations of a like nature and incurred in a manner consistent with industry practice, or (f) operators Liens under joint operating
agreements or similar customary agreements in the Oil and Gas Business); 
 (9) Liens securing all outstanding Notes and the
Subsidiary Guarantees thereof; 
 (10) Liens securing Indebtedness incurred to refinance Indebtedness incurred under
clauses (3), (4) or (5) that was previously so secured, provided that any such Lien is limited to all or part of the same property or assets (plus improvements, accessions, proceeds or dividends or distributions in respect thereof) that secured
(or, under the written arrangements under which the original Lien arose, could secure) the Indebtedness being refinanced or is in respect of property that is the security for a Permitted Lien hereunder; and 

(11) Liens incurred in the ordinary course of business of the Company or any Restricted Subsidiary of the Company with respect
to obligations that do not exceed, at the time of incurrence of such Lien, the greater of (a) $250.0 million or (b) 2.5% of ACNTA at any one time outstanding. 

“Permitted Refinancing Indebtedness” means any Indebtedness of the Company or any of its Restricted Subsidiaries issued in
exchange for, or the net proceeds of which are used to extend, refinance, renew, replace, defease or refund other Indebtedness of the Company or any of its Restricted Subsidiaries (other than intercompany Indebtedness); provided that: 

(1) the principal amount (or accreted value, if applicable) of such Permitted Refinancing Indebtedness does not exceed the
principal amount (or accreted value, if applicable) of the Indebtedness being extended, refinanced, renewed, replaced, defeased or refunded (plus all accrued interest on the Indebtedness and the amount of all expenses and premiums incurred in
connection therewith); 

  
 21 

 (2) such Permitted Refinancing Indebtedness has a final maturity date later than
the final maturity date of, and has a Weighted Average Life to Maturity equal to or greater than the Weighted Average Life to Maturity of, the Indebtedness being extended, refinanced, renewed, replaced, defeased or refunded; 

(3) if the Indebtedness being extended, refinanced, renewed, replaced, defeased or refunded is subordinated in right of payment
to the Notes or the Subsidiary Guarantees, such Permitted Refinancing Indebtedness is subordinated in right of payment to the Notes or the Subsidiary Guarantees on terms at least as favorable to the Noteholders as those contained in the
documentation governing the Indebtedness being extended, refinanced, renewed, replaced, defeased or refunded; and 
 (4) such
Indebtedness is not incurred by a Restricted Subsidiary of the Company if the Company is the obligor on the Indebtedness being extended, refinanced, renewed, replaced, defeased or refunded; provided, however, that a Restricted Subsidiary that is
also a Guarantor may guarantee Permitted Refinancing Indebtedness incurred by the Company, whether or not such Restricted Subsidiary was an obligor or guarantor of the Indebtedness being extended, refinanced, renewed, replaced, defeased or refunded.

 Notwithstanding the preceding, any Indebtedness incurred under Credit Facilities pursuant to Section 4.09 of the First Supplemental Indenture shall
be subject only to the refinancing provision in the definition of Credit Facilities and not pursuant to the requirements set forth in the definition of Permitted Refinancing Indebtedness. 

“Person” means any individual, corporation, partnership, joint venture, association, joint-stock company, trust,
unincorporated organization, limited liability company or government or other entity. 
 “Production Payments” means,
collectively, Dollar-Denominated Production Payments and Volumetric Production Payments. 
 “Rating Agency” means each of
S&P and Moody’s, or if S&P or Moody’s or both shall not make a rating on the Notes publicly available, a nationally recognized statistical rating agency or agencies, as the case may be, selected by the Company (as evidenced by a
Board Resolution) which shall be substituted for S&P or Moody’s, or both, as the case may be. 
 “Rating Decline”
means the occurrence of a decrease of one or more gradations (including gradations within rating categories as well as between rating categories) in the rating of the Notes by either Rating Agency. 

“Reporting Failure” means the failure of the Company to file with the Commission and make available or otherwise deliver to
the trustee and each Holder of Notes, within the time periods specified in Section 4.03 of the First Supplemental Indenture (after giving effect to any grace period specified under Rule 12b-25 under the Exchange Act), the periodic reports,
information, documents or other reports that the Company may be required to file with the Commission pursuant to such provision. 

  
 22 

 “Responsible Officer” means, with respect to the Trustee, any officer assigned
to the Corporate Trust Division – Corporate Finance Unit (or any successor division or unit) of the Trustee located at the Corporate Trust Office of the Trustee having direct responsibility for the administration of this Indenture or to whom
any corporate trust matter is referred because of such person’s knowledge of and familiarity with the particular subject. 

“Restricted Investment” means an Investment other than a Permitted Investment. 

“Restricted Subsidiary” of a Person means any Subsidiary of the referent Person that is not an Unrestricted Subsidiary. 

“S&P” means Standard & Poor’s Ratings Services, a division of The McGraw-Hill Companies, Inc., or any
successor to the rating agency business thereof. 
 “sale and leaseback transaction” means an arrangement relating to
property owned by the Company or a Restricted Subsidiary on the Issue Date or thereafter acquired by the Company or a Restricted Subsidiary whereby the Company or a Restricted Subsidiary transfers such property to a Person and the Company or a
Restricted Subsidiary leases it from such Person. 
 “SEC” or “Commission” means the Securities and Exchange
Commission. 
 “Significant Subsidiary” means any Subsidiary that would be a “significant subsidiary” as defined
in Article 1, Rule 1-02 of Regulation S-X, promulgated pursuant to the Securities Act, as such Regulation is in effect on the Issue Date. 

“Stated Maturity” means, with respect to any installment of interest or principal on any series of Indebtedness, the date on
which the payment of interest or principal was scheduled to be paid in the original documentation governing such Indebtedness, and will not include any contingent obligations to repay, redeem or repurchase any such interest or principal prior to the
date originally scheduled for the payment thereof. 
 “Subsidiary” means, with respect to any specified Person: 

(1) any corporation, association or other business entity (other than a partnership) of which more than 50% of the total voting
power of Voting Stock is at the time owned or controlled, directly or through another Subsidiary, by that Person or one or more of the other Subsidiaries of that Person (or a combination thereof); and 

(2) any partnership (a) the sole general partner or the managing general partner of which is such Person or a Subsidiary
of such Person or (b) the only general partners of which are that Person or one or more Subsidiaries of that Person (or any combination thereof), but only if such Person and its Subsidiaries are entitled to receive more than 20% of the assets
of such partnership upon its dissolution. 
 “Subsidiary Guarantees” means the joint and several guarantees issued by all
of the Guarantors pursuant to Article 10 of the First Supplemental Indenture. 
 “TIA” means the Trust Indenture Act.

  
 23 

 “Treasury Rate” means the yield to maturity at the time of computation of the
United States Treasury securities with a constant maturity (as compiled and published in the most recent Federal Reserve Statistical Release H.15 (519) that has become publicly available at least two business days prior to the Redemption Date
(or, if such Statistical Release is no longer published, any publicly available source or similar market data)) most nearly equal to the period from the Redemption Date to the final maturity date of the Notes; provided, however, that
if the period from the Redemption Date to such final maturity date is not equal to the constant maturity of a United States Treasury security for which a weekly average yield is given, the Treasury Rate shall be obtained by linear interpolation
(calculated to the nearest one-twelfth of a year) from the weekly average yields of United States Treasury securities for which such yields are given, except that if the period from the Redemption Date to such final maturity date is less than one
year, the weekly average yield on actually traded United States Treasury securities adjusted to a constant maturity of one year shall be used. 

“Uniform Commercial Code” means the New York Uniform Commercial Code as in effect from time to time. 

“Unrestricted Subsidiary” means any Subsidiary of the Company (other than Whiting) that is designated by the Board of
Directors as an Unrestricted Subsidiary pursuant to a Board Resolution, but only to the extent that such Subsidiary: 
 (1)
has no Indebtedness other than Non-Recourse Debt; 
 (2) is not party to any agreement, contract, arrangement or
understanding with the Company or any Restricted Subsidiary of the Company unless the terms of any such agreement, contract, arrangement or understanding are no less favorable to the Company or such Restricted Subsidiary than those that might be
obtained at the time from Persons who are not Affiliates of the Company; 
 (3) is a Person with respect to which neither the
Company nor any of its Restricted Subsidiaries has any direct or indirect obligation (a) to subscribe for additional Equity Interests or (b) to maintain or preserve such Person’s financial condition or to cause such Person to achieve
any specified levels of operating results; and 
 (4) has not guaranteed or otherwise directly or indirectly provided credit
support for any Indebtedness of the Company or any of its Restricted Subsidiaries. 
 Any designation of a Subsidiary of the Company as an
Unrestricted Subsidiary will be evidenced to the Trustee by filing with the Trustee the Board Resolution giving effect to such designation and an Officers’ Certificate certifying that such designation complied with the preceding conditions and
was permitted by Section 4.07 of the First Supplemental Indenture. If, at any time, any Unrestricted Subsidiary would fail to meet the preceding requirements as an Unrestricted Subsidiary, it will thereafter cease to be an Unrestricted
Subsidiary for purposes of this Indenture and any Indebtedness of such Subsidiary will be deemed to be incurred by a Restricted Subsidiary of the Company as of such date and, if such Indebtedness is not permitted to be incurred as of such date under
Section 4.09 of the First Supplemental Indenture, the Company will be in default of such covenant. 

  
 24 

 “Volumetric Production Payments” means production payment obligations recorded
as deferred revenue in accordance with GAAP, together with all related undertakings and obligations. 
 “Voting Stock” of
any Person as of any date means the Capital Stock of such Person that is at the time entitled (without regard to the occurrence of any contingency) to vote in the election of the Board of Directors of such Person. 

“Weighted Average Life to Maturity” means, when applied to any Indebtedness at any date, the number of years obtained by
dividing: 
 (1) the sum of the products obtained by multiplying (a) the amount of each then remaining installment,
sinking fund, serial maturity or other required payments of principal, including payment at final maturity, in respect of the Indebtedness, by (b) the number of years (calculated to the nearest one-twelfth) that will elapse between such date
and the making of such payment; by 
 (2) the then outstanding principal amount of such Indebtedness. 

“Whiting” means Whiting Oil and Gas Corporation, a Delaware corporation, and its successors. 

“2014 Notes” means the Company’s 7% Senior Subordinated Notes due 2014 or any guarantees thereof that are outstanding on
the Issue Date. 
 Section 1.02. Other Definitions. 
  

					
	 Term
	  	Defined
in Section	 
	 “Affiliate Transaction”
	  	 	4.11	  
	 “Asset Sale Offer”
	  	 	3.04	  
	 “Change of Control Offer”
	  	 	4.15	  
	 “Change of Control Payment”
	  	 	4.15	  
	 “Change of Control Purchase Date”
	  	 	4.15	  
	 “Change of Control Settlement Date”
	  	 	4.15	  
	 “Covenant Defeasance”
	  	 	8.03	  
	 “Discharge”
	  	 	8.08	  
	 “Event of Default”
	  	 	6.01	  
	 “Excess Proceeds”
	  	 	4.10	  
	 “incur”
	  	 	4.09	  
	 “Legal Defeasance”
	  	 	8.02	  
	 “Offer Amount”
	  	 	3.04	  
	 “Offer Period”
	  	 	3.04	  
	 “Payment Default”
	  	 	6.01	  
	 “Permitted Debt”
	  	 	4.09	  
	 “Restricted Payments”
	  	 	4.07	  
	 “Settlement Date”
	  	 	3.04	  
	 “Termination Date”
	  	 	3.04	  

  
 25 

 Section 1.03. Rules of Construction. 

Unless the context otherwise requires, in construing this First Supplemental Indenture: 

(1) a term has the meaning assigned to it herein or, if not assigned herein, then in the Original Indenture; 

(2) an accounting term not otherwise defined has the meaning assigned to it in accordance with GAAP; 

(3) “or” is not exclusive; 

(4) words in the singular include the plural, and in the plural include the singular; 

(5) provisions apply to successive events and transactions; 

(6) references to sections of or rules under the Securities Act or the Exchange Act shall be deemed to include substitute,
replacement or successor sections or rules adopted by the SEC from time to time; and 
 (7) “herein,”
“hereof” and other words of similar import refer to this First Supplemental Indenture as a whole (as amended or supplemented from time to time) and not to any particular Article, Section or other subdivision, and references to specific
Sections, Articles or other subdivisions without contrary reference shall refer to Sections, Articles or subdivisions of the First Supplemental Indenture, as applicable. 

ARTICLE 2 
 THE NOTES 

Section 2.01. Creation and Form. 

Pursuant to Sections 201 and 301 of the Original Indenture, there is hereby created a new series of Securities designated as the
“5.000% Senior Notes due 2019” (which are herein referred to as the “Notes” for purposes of this First Supplemental Indenture). The Notes shall be substantially in the form specified in Exhibit A to this First Supplemental
Indenture, shall have the terms set forth therein and shall be entitled to the benefits of the other provisions of the Original Indenture as modified by this First Supplemental Indenture and specified herein.

Section 2.02. Execution and Authentication. 

On the Issue Date, the Trustee shall authenticate and deliver $1,100,000,000 of Initial Notes and, at any time and from time to time
thereafter, the Trustee shall authenticate and deliver Additional Notes for original issue, in each case upon the Trustee’s receipt of a Company Order in accordance with Section 303 of the Original Indenture. Such order shall specify the
aggregate principal amount of the Notes to be authenticated and the date on which the original issue of Notes is to be authenticated and, in the case of an issuance of Additional Notes pursuant to Section 2.05 of this First Supplemental
Indenture after the Issue Date, shall certify that such issuance is in compliance with such Section 2.05 and Section 4.09 hereof. The Notes shall be 

  
 26 

 
issued initially in the form of Global Securities, for which The Depository Trust Company shall act as Depositary. Notes in the form of Global Securities shall bear the legends set forth on
the form of Note attached hereto. 
 Section 2.03. Outstanding Notes. 

Notes outstanding at any time are all Notes authenticated by the Trustee except for those canceled by it, those delivered to it for
cancellation and those described in this Section as not outstanding. Except as otherwise provided in TIA §316(a), a Note does not cease to be outstanding because the Company or an Affiliate of the Company holds the Note. 

If a Note is replaced pursuant to Section 306 of the Original Indenture, it ceases to be outstanding unless the Trustee and the Company
receive proof satisfactory to them that the replaced Note is held by a bona fide purchaser. 
 If the Paying Agent segregates and holds in
trust, in accordance with the Indenture, by 11:00 a.m. New York time, on a Redemption Date or other maturity date money sufficient to pay all principal, premium, if any, and interest payable on that date with respect to the Notes (or portions
thereof) to be redeemed or otherwise maturing, as the case may be, then on and after that date such Notes (or portions thereof) cease to be outstanding and interest on them ceases to accrue. 

Section 2.04. CUSIP Numbers. 
 The
Company in issuing the Notes may use “CUSIP” numbers and corresponding “ISINs” (if then generally in use) and, if so, the Trustee shall use “CUSIP” numbers and corresponding “ISINs” in notices of redemption as
a convenience to Holders; provided, however, that any such notice may state that no representation is made as to the correctness of such numbers either as printed on the Notes or as contained in any notice of a redemption and that reliance may be
placed only on the other identification numbers printed on the Notes, and any such redemption shall not be affected by any defect in or omission of such numbers. 

Section 2.05. Issuance of Additional Notes. 

The Company shall be entitled, subject to its compliance with Section 4.09 of this First Supplemental Indenture, to issue Additional Notes
under the Indenture which shall have identical terms as the Initial Notes issued on the Issue Date, other than with respect to the date of issuance and issue price; provided, however, that no Additional Notes may be issued at a price that would
cause such Additional Notes to have “original issue discount” within the meaning of Section 1273 of the Code. The Initial Notes issued on the Issue Date and any Additional Notes shall be treated as a single class for all purposes
under the Indenture. 
 ARTICLE 3 

REDEMPTION AND PURCHASE 
 Section 3.01.
Redemption and Purchase. 
 The Notes shall be subject to redemption and purchase by the Company pursuant to the provisions of Article
Eleven of the Original Indenture and this Article 3. 

  
 27 

 Section 3.02. Optional Redemption. 

(a) Except as set forth in clause (b) of this Section 3.02 or in Section 4.15 of the First Supplemental Indenture, the Company
shall not have the option to redeem the Notes prior to December 15, 2018. On and after December 15, 2018, the Company may on any one or more occasions redeem the Notes, in whole or in part, at a Redemption Price equal to 100% of the
principal amount thereof, plus accrued and unpaid interest, if any, to the Redemption Date (subject to the right of Holders of record on the relevant record date to receive interest due on an Interest Payment Date that is on or prior to the
Redemption Date). 
 (b) Notwithstanding the provisions of clause (a) of this Section 3.02, at any time prior to December 15,
2018, the Company may on any one or more occasions redeem the Notes, in whole or in part, at the Redemption Price of 100% of the principal amount thereof plus the Applicable Premium as of, plus accrued and unpaid interest, if any, to, the Redemption
Date (subject to the right of Holders of record on the relevant record date to receive interest due on an Interest Payment Date that is on or prior to the Redemption Date). 

The Company shall determine any Applicable Premium and shall notify the Trustee thereof in writing at least two Business Days in advance of
the payment date thereof. The Trustee shall have no responsibility for any calculation of any such amounts and may rely conclusively on the Company’s determinations thereof. 

Section 3.03. Mandatory Redemption. 

Except as set forth under Sections 4.10 and 4.15 hereof, the Company shall not be required to make mandatory redemption or sinking fund
payments with respect to the Notes or to repurchase the Notes at the option of the Holders. 
 Section 3.04. Offer to Purchase by Application of
Excess Proceeds. 
 In the event that, pursuant to Section 4.10 hereof, the Company shall be required to commence an offer to all
Holders to purchase Notes (an “Asset Sale Offer”), it shall follow the procedures specified below. 
 The Asset Sale Offer shall
remain open for a period of 20 Business Days following its commencement and no longer, except to the extent that a longer period is required by Applicable Law (the “Offer Period”). No later than five Business Days after the termination of
the Offer Period (the “Settlement Date”), the Company shall purchase and pay for the principal amount of Notes required to be purchased pursuant to Section 4.10 hereof (the “Offer Amount”) or, if less than the Offer Amount
has been tendered, all Notes validly tendered in response to the Asset Sale Offer. Payment for any Notes so purchased shall be made in the manner prescribed in the Notes. 

Upon the commencement of an Asset Sale Offer, the Company shall send, by first class mail, a notice to each of the Holders, with a copy to the
Trustee. The notice shall contain all instructions and materials necessary to enable such Holders to tender Notes pursuant to the Asset Sale Offer. The Asset Sale Offer shall be made to all Holders. The notice, which shall govern the terms of the
Asset Sale Offer, shall state: 

  
 28 

 (a) that the Asset Sale Offer is being made pursuant to this Section 3.04
and Section 4.10 hereof and the length of time the Asset Sale Offer shall remain open, including the time and date the Asset Sale Offer will terminate (the “Termination Date”); 

(b) the Offer Amount and the purchase price; 

(c) that any Note not tendered or accepted for payment shall continue to accrue interest; 

(d) that, unless the Company defaults in making such payment, any Note accepted for payment pursuant to the Asset Sale Offer
shall cease to accrue interest after the Settlement Date; 
 (e) that Holders electing to have a Note purchased pursuant to
an Asset Sale Offer may only elect to have all of such Note purchased and may not elect to have only a portion of such Note purchased; 

(f) that Holders electing to have a Note purchased pursuant to any Asset Sale Offer shall be required to surrender the Note,
with the form entitled “Option of Holder to Elect Purchase” on the reverse of the Note completed, to the Company or a Paying Agent at the address specified in the notice, before the Termination Date; 

(g) that Holders shall be entitled to withdraw their election if the Company or the Paying Agent, as the case may be, receives,
prior to the Termination Date, a telegram, telex, facsimile transmission or letter setting forth the name of the Holder, the principal amount of the Note the Holder delivered for purchase and a statement that such Holder is withdrawing his election
to have such Note purchased; 
 (h) that, if the aggregate principal amount of Notes surrendered by Holders, and Pari Passu
Indebtedness surrendered by holders or lenders, collectively, exceeds the amount the Company is required to repurchase, the Trustee shall select the Notes and Pari Passu Indebtedness to be purchased on a pro rata basis on the basis of the aggregate
principal amount of tendered Notes and Pari Passu Indebtedness (with such adjustments as may be deemed appropriate by the Trustee so that only Notes in denominations of equal to $2,000 or any integral $1,000 multiple in excess thereof, shall be
purchased); and 
 (i) that Holders whose Notes were purchased only in part shall be issued new Notes equal in principal
amount to the unpurchased portion of the Notes surrendered (or transferred by book-entry transfer). 
 If any of the Notes subject to an
Asset Sale Offer is in the form of a Global Note, then the Company shall modify such notice to the extent necessary to accord with the procedures of the Depository applicable to repurchases. 

Promptly after the Termination Date, the Company shall, to the extent lawful, accept for payment Notes or portions thereof tendered pursuant
to the Asset Sale Offer in the aggregate principal amount required by Section 4.10 hereof, and prior to the Settlement Date it shall deliver to the Trustee an Officers’ Certificate stating that such Notes or portions thereof were accepted

  
 29 

 
for payment by the Company in accordance with the terms of this Section 3.04 and Section 4.10 hereof. On the Settlement Date, the Company or the Paying Agent, as the case may be, shall
mail or deliver to each tendering Holder an amount equal to the purchase price of the Notes tendered by such Holder and accepted by the Company for purchase, and the Company shall issue a new Note, and the Trustee shall authenticate and mail or
deliver such new Note to such Holder, in a principal amount equal to any unpurchased portion of the Note surrendered. Any Note not so accepted shall be promptly mailed or delivered by the Company to the Holder thereof. The Company shall publicly
announce the results of the Asset Sale Offer on or before the Settlement Date. 
 ARTICLE 4 

COVENANTS 
 Except for
Section 1003, the provisions of Article Ten of the Original Indenture shall not apply to the Notes, and in lieu thereof the following provisions of this Article 4 shall apply to the Notes. 

Section 4.01. Payment of Notes. 
 The
Company shall pay or cause to be paid the principal of, premium, if any, and interest on the Notes on the dates and in the manner provided in the Notes. Principal, premium, if any, and interest shall be considered paid on the date due if the Paying
Agent, if other than the Company or a Guarantor, holds as of 11:00 a.m. New York time on the due date money deposited by the Company or a Guarantor in immediately available funds and designated for and sufficient to pay all principal, premium, if
any, and interest then due. 
 The Company shall pay interest (including post-petition interest in any proceeding under any Bankruptcy Law)
on overdue principal at the rate equal to the interest rate on the Notes to the extent lawful; it shall pay interest (including post-petition interest in any proceeding under any Bankruptcy Law) on overdue installments of interest (without regard to
any applicable grace period), at the same rate to the extent lawful. 
 Section 4.02. Maintenance of Office or Agency. 

The Company shall maintain an office or agency (which may be an office of the Trustee or an affiliate of the Trustee) where Notes may be
presented or surrendered for payment and where notices and demands to or upon the Company in respect of the Notes and the Indenture may be served. The Company shall give prompt written notice to the Trustee of the location, and any change in the
location, of such office or agency. If at any time the Company shall fail to maintain any such required office or agency or shall fail to furnish the Trustee with the address thereof, such presentations, surrenders, notices and demands may be made
or served at the Corporate Trust Office of the Trustee. 
 The Company may also from time to time designate one or more other offices or
agencies where the Notes may be presented or surrendered for any or all such purposes and may from 

  
 30 

 
time to time rescind such designations. Further, if at any time there shall be no such office or agency in the City of New York where the Notes may be presented or surrendered for payment, the
Company shall forthwith designate and maintain such an office or agency in the City of New York, in order that the Notes shall at all times be payable in the City of New York. The Company shall give prompt written notice to the Trustee of any such
designation or rescission and of any change in the location of any such other office or agency. 
 The Company hereby appoints the Trustee
as Paying Agent and designates the Corporate Trust Office of the Trustee as one such office or agency of the Company in accordance with Section 301 of the Original Indenture. 

Section 4.03. Reports. 
 (a)
Notwithstanding that the Company may not be subject to the reporting requirements of Section 13 or 15(d) of the Exchange Act, so long as any Notes are outstanding, the Company will file with the SEC (unless the SEC will not accept such a
filing) for public availability within the time period specified in the SEC’s rules and regulations under the Exchange Act and, within 10 Business Days of filing, or attempting to file, the same with the SEC, furnish to the Trustee and,
upon its request, to any of the Holders of the Notes: 
 (1) all quarterly and annual financial and other information with
respect to the Company and its Subsidiaries that would be required to be contained in a filing with the SEC on Forms 10-Q and 10-K if the Company were required to file such forms, including a “Management’s Discussion and Analysis of
Financial Condition and Results of Operations” and, with respect to the annual information only, a report thereon by the Company’s certified independent accountants; and 

(2) all current reports that would be required to be filed with the SEC on Form 8-K if the Company were required to file
such reports. 
 The Company’s filing of any such information, document or report with the Commission pursuant to its Electronic Data Gathering,
Analysis and Retrieval (or EDGAR) system or any successor thereto shall satisfy the reporting obligation described above. 
 The Company shall at all times
comply with TIA § 314(a). 
 (b) If the Company has designated any of its Subsidiaries as Unrestricted Subsidiaries, then the
quarterly and annual financial information required by paragraph (a) of this Section 4.03 shall include a reasonably detailed presentation, either on the face of the financial statements or in the footnotes to the financial statements and
in Management’s Discussion and Analysis of Financial Condition and Results of Operations, of the financial condition and results of operations of the Company and its Restricted Subsidiaries separate from the financial condition and results of
operations of the Unrestricted Subsidiaries. 

  
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 Section 4.04. Compliance Certificate. 

(a) The Company shall deliver to the Trustee, within 90 days after the end of each fiscal year, an Officers’ Certificate stating that a
review of the activities of the Company and its Restricted Subsidiaries during the preceding fiscal year has been made under the supervision of the signing Officers with a view to determining whether the Company has kept, observed, performed and
fulfilled its obligations under the Indenture, and further stating, as to each such Officer signing such certificate, that to the best of his or her knowledge the Company has kept, observed, performed and fulfilled each and every covenant contained
in the Indenture and is not in default in the performance or observance of any of the terms, provisions and conditions of the Indenture (or, if a Default or Event of Default with respect to the Notes shall have occurred, describing all such Defaults
or Events of Default of which he or she may have knowledge and what action the Company is taking or proposes to take with respect thereto) and that to the best of his or her knowledge no event has occurred and remains in existence by reason of which
payments of interest on the Notes are prohibited or if such event has occurred, a description of the event and what action the Company is taking or proposes to take with respect thereto. 

(b) The Company shall, so long as any of the Notes are outstanding, deliver to the Trustee, forthwith upon any Officer becoming aware of any
Default or Event of Default with respect to the Notes, an Officers’ Certificate specifying such Default or Event of Default and what action the Company is taking or proposes to take with respect thereto. 

Section 4.05. Taxes. 
 The Company shall
pay, and shall cause each of its Subsidiaries to pay, prior to delinquency, all material taxes, assessments, and governmental levies except such as are contested in good faith and by appropriate proceedings or where the failure to effect such
payment is not adverse in any material respect to the Holders of the Notes. 
 Section 4.06. Stay, Extension and Usury Laws. 

Each of the Company and each of the Guarantors covenants (to the extent that it may lawfully do so) that it shall not at any time insist upon,
plead, or in any manner whatsoever claim or take the benefit or advantage of, any stay, extension or usury law wherever enacted, now or at any time hereafter in force, that may affect the covenants or the performance of the Indenture; and the
Company (to the extent that it may lawfully do so) hereby expressly waives all benefit or advantage of any such law, and covenants that it shall not, by resort to any such law, hinder, delay or impede the execution of any power herein granted to the
Trustee, but shall suffer and permit the execution of every such power as though no such law has been enacted. 
 Section 4.07. Limitation on Restricted
Payments. 
 The Company will not, and will not permit any of its Restricted Subsidiaries to, directly or indirectly: 

(1) declare or pay any dividend or make any other payment or distribution on account of the Company’s or any of its
Restricted Subsidiaries’ Equity Interests (including, without limitation, any payment in connection with any merger or 

  
 32 

 
consolidation to which the Company or any of its Restricted Subsidiaries is a party) or to the direct or indirect holders of the Company’s or any of its Restricted Subsidiaries’ Equity
Interests in their capacity as such (other than dividends or distributions payable in Equity Interests (other than Disqualified Stock) of the Company or payable to the Company or a Restricted Subsidiary of the Company); 

(2) purchase, redeem or otherwise acquire or retire for value (including, without limitation, in connection with any merger or
consolidation to which the Company is a party) any Equity Interests of the Company or any direct or indirect parent of the Company; 

(3) make any principal payment on or with respect to, or purchase, redeem, defease or otherwise acquire or retire for value any
Indebtedness that is subordinated to the Notes or the Subsidiary Guarantees prior to any scheduled repayment or scheduled maturity, except a payment, purchase, redemption, defeasance or other acquisition of any such Indebtedness in anticipation of
satisfying a sinking fund obligation, principal installment or the Stated Maturity thereof, in each case, due within one year of the date of such payment, purchase, redemption, defeasance or other acquisition; or 

(4) make any Restricted Investment (all such payments and other actions set forth in these clauses (1) through
(4) above being collectively referred to as “Restricted Payments”), 
 unless, at the time of and after giving effect to such
Restricted Payment: 
 (1) no Default or Event of Default has occurred and is continuing or would occur as a consequence of
such Restricted Payment; 
 (2) the Company would, at the time of such Restricted Payment and after giving pro forma effect
thereto as if such Restricted Payment had been made at the beginning of the applicable four-quarter period, have been permitted to incur at least $1.00 of additional Indebtedness pursuant to the Fixed Charge Coverage Ratio test set forth in the
first paragraph of Section 4.09; and 
 (3) such Restricted Payment, together with the aggregate amount of all other
Restricted Payments made by the Company and its Restricted Subsidiaries after May 11, 2004 (excluding Restricted Payments permitted by clauses (2), (3), (4), (6), (7) and (8) of the next succeeding paragraph), is less than the
sum, without duplication, of: 
 (a) 50% of the Consolidated Net Income of the Company for the period (taken as one
accounting period) from April 1, 2004 to the end of the Company’s most recently ended fiscal quarter for which internal financial statements are available at the time of such Restricted Payment (or, if such Consolidated Net Income for such
period is a deficit, less 100% of such deficit), plus 

  
 33 

 (b) 100% of the aggregate net cash proceeds received by the Company (including
the fair market value of any Additional Assets to the extent acquired in consideration of Equity Interests of the Company (other than Disqualified Stock)) since May 11, 2004 as a contribution to its common equity capital or from the issue or
sale of Equity Interests of the Company (other than Disqualified Stock) or from the issue or sale of convertible or exchangeable Disqualified Stock or convertible or exchangeable debt securities of the Company that have been converted into or
exchanged for such Equity Interests (other than Equity Interests (or Disqualified Stock or debt securities) sold to a Subsidiary of the Company), plus 

(c) to the extent that any Restricted Investment that was made after May 11, 2004 is sold for cash or otherwise liquidated
or repaid for cash, the lesser of (i) the cash return of capital with respect to such Restricted Investment (less the cost of disposition, if any) and (ii) the initial amount of such Restricted Investment, plus 

(d) to the extent that any Unrestricted Subsidiary of the Company is redesignated as a Restricted Subsidiary after May 11,
2004, the lesser of (i) the fair market value of the Company’s Investment in such Subsidiary as of the date of such redesignation or (ii) such fair market value as of the date on which such Subsidiary was originally designated as an
Unrestricted Subsidiary. 
 The preceding provisions will not prohibit: 

(1) the payment of any dividend or distribution or the consummation of any irrevocable redemption of debt that is subordinate to the Notes,
within 60 days after the date of declaration of such dividend or the delivery of any irrevocable notice of redemption, as the case may be, if the dividend, distribution or redemption payment on the date of declaration or the date of the notice or
redemption, as the case may be, would have complied with the provisions of the Indenture; 
 (2) the redemption, repurchase, retirement,
defeasance or other acquisition of any subordinated Indebtedness of the Company or any Guarantor or of any Equity Interests of the Company in exchange for, or out of the net cash proceeds of the substantially concurrent sale (other than to a
Subsidiary of the Company) of, Equity Interests of the Company (other than Disqualified Stock), with a sale being deemed substantially concurrent if such redemption, repurchase, retirement, defeasance or acquisition occurs not more than 120 days
after such sale; provided that the amount of any such net cash proceeds that are utilized for any such redemption, repurchase, retirement, defeasance or other acquisition will be excluded from clause (3)(b) of the preceding paragraph; 

(3) the defeasance, redemption, repurchase, retirement or other acquisition of subordinated Indebtedness of the Company or any Guarantor with
the net cash proceeds from an incurrence of, or in exchange for, Permitted Refinancing Indebtedness; 
 (4) the payment of any dividend or
distribution by a Restricted Subsidiary of the Company to the holders of its Equity Interests on a pro rata basis; 

  
 34 

 (5) the repurchase, redemption or other acquisition or retirement for value of any Equity
Interests of the Company or any Restricted Subsidiary of the Company held by any current or former director, officer, employee or consultant of the Company or any of its Restricted Subsidiaries pursuant to any equity subscription agreement or plan,
stock option agreement or similar agreement or plan; provided that the aggregate price paid for all such repurchased, redeemed, acquired or retired Equity Interests may not exceed $2.0 million in any twelve-month period; 

(6) the acquisition of Equity Interests by the Company in connection with the exercise of stock options or stock appreciation rights by way of
cashless exercise; 
 (7) the purchase, repurchase, redemption, defeasance or other acquisition or retirement for value of subordinated
Indebtedness of the Company or any Restricted Subsidiary (a) at a purchase price not greater than 101.0% of the principal amount thereof (plus accrued and unpaid interest) in the event of a Change of Control in accordance with provisions
similar to Section 4.15 or (b) at a purchase price not greater than 100.0% of the principal amount thereof (plus accrued and unpaid interest) in accordance with provisions similar to Section 4.10; provided that, prior to or
simultaneously with such purchase, repurchase, redemption, defeasance or other acquisition or retirement, the Company has made the Change of Control Offer or Asset Sale Offer, as applicable, as provided in such covenants with respect to the Notes
and has completed the repurchase or redemption of all Notes validly tendered for payment in connection with such Change of Control Offer or Asset Sale Offer; 

(8) the payment of cash in lieu of fractional shares of Capital Stock in connection with any transaction otherwise permitted under this
Section 4.07; or 
 (9) other Restricted Payments in an aggregate amount since May 11, 2004 not to exceed $25.0 million; 

provided, however, that at the time of, and after giving effect to, any Restricted Payment permitted under the preceding clause (9), no Default
or Event of Default shall have occurred and be continuing or would be caused thereby. 
 The amount of all Restricted Payments (other than
cash) will be the fair market value on the date of the Restricted Payment of the asset(s) or securities proposed to be transferred or issued by the Company or such Restricted Subsidiary, as the case may be, pursuant to the Restricted Payment. The
fair market value of any assets or securities that are required to be valued by this covenant will be determined, in the case of amounts under $50.0 million, by an officer of the Company and, in the case of amounts of $50.0 million or
more, by the Board of Directors of the Company, whose determination shall be evidenced by a Board Resolution. Not later than the date of making any Restricted Payment (excluding any Restricted Payment described in the preceding clause (2), (3),
(4), (6), (7) or (8)) the Company will deliver to the Trustee an Officers’ Certificate stating that such Restricted Payment is permitted and setting forth the basis upon which the calculations required by this Section 4.07 were computed.
For purposes of determining compliance with this Section 4.07, in the event that a Restricted Payment meets the criteria of more than one of the categories of Restricted Payments described in the preceding clauses (1) through (9), or is
entitled to be made pursuant to the first paragraph 

  
 35 

 
of this Section 4.07, the Company will be permitted to divide or classify (or later divided or classify or reclassify in whole or in part in its sole discretion) such Restricted Payment in
any manner that complies with this Section 4.07. 
 Section 4.08. Limitation on Dividend and Other Payment Restrictions Affecting Subsidiaries.

 The Company will not, and will not permit any of its Restricted Subsidiaries to, directly or indirectly, create or permit to exist or
become effective any consensual encumbrance or restriction on the ability of any Restricted Subsidiary to: 
 (1) pay
dividends or make any other distributions on its Capital Stock to the Company or any of its Restricted Subsidiaries, or pay any Indebtedness or other obligations owed to the Company or any of its Restricted Subsidiaries; 

(2) make loans or advances to the Company or any of its Restricted Subsidiaries; or 

(3) transfer any of its properties or assets to the Company or any of its Restricted Subsidiaries. 

However, the preceding restrictions of this Section 4.08 will not apply to encumbrances or restrictions existing under or by reason of:

 (1) agreements governing Existing Indebtedness and Credit Facilities as in effect on the Issue Date and any amendments,
modifications, restatements, renewals, increases, supplements, refundings, replacements or refinancings of those agreements, provided that the amendments, modifications, restatements, renewals, increases, supplements, refundings, replacements or
refinancings are not materially more restrictive, taken as a whole, with respect to such encumbrances and restrictions than those contained in those agreements on the Issue Date as determined in good faith by the Company; 

(2) the Indenture, the Notes and the Subsidiary Guarantees; 

(3) Applicable Law; 

(4) any instrument governing Indebtedness or Capital Stock of a Person acquired by the Company or any of its Restricted
Subsidiaries as in effect at the time of such acquisition, which encumbrance or restriction is not applicable to any Person, or the properties or assets of any Person, other than the Person, or the property or assets of the Person, so acquired,
provided that, in the case of Indebtedness, such Indebtedness was permitted by the terms of the Indenture to be incurred, and any amendments, restatements, modifications, renewals, supplements, refundings, replacements or refinancings of those
agreements; provided that the amendments, restatements, modifications, renewals, supplements, refundings, replacements or refinancings are not materially more restrictive, taken as a whole, with respect to such encumbrances and restrictions than
those contained in those agreements on the date of such acquisition as determined in good faith by the Company; 

  
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 (5) customary non-assignment provisions in leases entered into in the ordinary
course of business and consistent with past practices; 
 (6) Capital Lease Obligations or purchase money obligations, in
each case for property acquired in the ordinary course of business that impose restrictions on that property of the nature described in clause (3) of the preceding paragraph; 

(7) any agreement for the sale or other disposition of a Restricted Subsidiary of the Company that restricts distributions
and/or transfers of properties and assets by that Restricted Subsidiary pending its sale or other disposition; 
 (8)
Permitted Refinancing Indebtedness, provided that the restrictions contained in the agreements governing such Permitted Refinancing Indebtedness are not materially more restrictive, taken as a whole, than those contained in the agreements governing
the Indebtedness being refinanced as determined in good faith by the Company; 
 (9) Liens securing Indebtedness otherwise
permitted to be incurred under the provisions of Section 4.12 hereof that limit the right of the debtor to dispose of the assets subject to such Liens; 

(10) provisions with respect to the disposition or distribution of assets or property in joint venture agreements, asset sale
agreements, stock sale agreements, agreements respecting Permitted Business Investments and other similar agreements entered into (a) in the ordinary course of business or (b) with the Company’s approval by its Board of Directors,
which limitation is applicable only to property or capital stock that are subject to such agreements; 
 (11) restrictions on
cash, Cash Equivalents or other deposits or net worth imposed by customers or suppliers under contracts entered into in the ordinary course of business; and 

(12) restrictions on the sale, lease or transfer of property or assets arising or agreed to in the ordinary course of business,
not relating to any Indebtedness, and that do not, individually or in the aggregate, detract from the value of property or assets of the Company or any Restricted Subsidiary in any manner material to the Company and the Restricted Subsidiaries taken
as a whole; and 
 (13) Hedging Obligations permitted to be incurred under the covenants set forth in Section 4.09
hereof. 
 Section 4.09. Limitation on Incurrence of Indebtedness and Issuance of Preferred Stock. 

The Company will not, and will not permit any of its Restricted Subsidiaries to, directly or indirectly, create, incur, issue, assume,
guarantee or otherwise become directly or indirectly liable, contingently or otherwise, with respect to (collectively, “incur”) any Indebtedness (including Acquired Debt), neither the Company nor any Guarantor will issue any Disqualified

  
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Stock, and the Company will not permit any of its other Restricted Subsidiaries to issue any shares of preferred stock; provided, however, that the Company and any Guarantor may incur
Indebtedness (including Acquired Debt) or issue Disqualified Stock, if the Fixed Charge Coverage Ratio for the Company’s most recently ended four full fiscal quarters for which internal financial statements are available immediately preceding
the date on which such additional Indebtedness is incurred or such Disqualified Stock is issued would have been at least 2.0 to 1.0, determined on a pro forma basis (including a pro forma application of the net proceeds therefrom), as if the
additional Indebtedness had been incurred or Disqualified Stock had been issued, as the case may be, at the beginning of such four-quarter period. 

The first paragraph of this Section 4.09 will not prohibit the incurrence of any of the following items of Indebtedness (collectively,
“Permitted Debt”): 
 (1) the incurrence by the Company or any of its Restricted Subsidiaries of additional
Indebtedness (including letters of credit) under one or more Credit Facilities in an aggregate principal amount at any one time outstanding under this clause (1) (with letters of credit being deemed to have a principal amount equal to the
maximum potential liability of the Company and its Subsidiaries thereunder) not to exceed an amount equal to the greater of (a) $1.25 billion or (b) 30% of ACNTA as of the date of such incurrence; 

(2) the incurrence by the Company or any of its Restricted Subsidiaries of the Existing Indebtedness; 

(3) the incurrence by the Company and the Guarantors of Indebtedness represented by the Notes issued and sold on the Issue Date
and the related Subsidiary Guarantees issued on the Issue Date; 
 (4) the incurrence by the Company or any of its Restricted
Subsidiaries of Indebtedness represented by Capital Lease Obligations, mortgage financings or purchase money obligations, in each case, incurred for the purpose of financing all or any part of the purchase price or cost of design, construction,
installation or improvement of property, plant or equipment used in the business of the Company or such Restricted Subsidiary, in an aggregate principal amount at any time outstanding, including all Permitted Refinancing Indebtedness incurred to
renew, refund, refinance, replace, defease or discharge any Indebtedness incurred pursuant to this clause (4), not to exceed the greater of (a) $75.0 million or (b) 1.0% of ACNTA as of the date of such incurrence at any time outstanding;

 (5) the incurrence by the Company or any of its Restricted Subsidiaries of Permitted Refinancing Indebtedness in exchange
for, or the net proceeds of which are used to refund, refinance or replace Indebtedness (other than intercompany Indebtedness) that was permitted by the Indenture to be incurred under the first paragraph of this Section 4.09 or clause
(2) or (3) of this paragraph or this clause (5); 
 (6) the incurrence by the Company or any of its Restricted
Subsidiaries of intercompany Indebtedness between or among the Company and any of its Restricted Subsidiaries; provided, however, that: 

  
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 (a) if the Company is the obligor on such Indebtedness and a Guarantor is not the
obligee, such Indebtedness must be expressly subordinated to the prior payment in full in cash of all Obligations with respect to the Notes, or if a Guarantor is the obligor on such Indebtedness and neither the Company nor another Guarantor is the
obligee, such Indebtedness must be expressly subordinated to the prior payment in full in cash of all Obligations with respect to the Subsidiary Guarantee of such Guarantor; and 

(b) (i) any subsequent issuance or transfer of Equity Interests that results in any such Indebtedness being held by a
Person other than the Company or a Restricted Subsidiary of the Company and (ii) any sale or other transfer of any such Indebtedness to a Person that is neither the Company nor a Restricted Subsidiary of the Company will be deemed, in each
case, to constitute an incurrence of such Indebtedness by the Company or such Restricted Subsidiary, as the case may be, that was not permitted by this clause (6); 

(7) the incurrence by the Company or any of its Restricted Subsidiaries of Hedging Obligations; 

(8) the guarantee by the Company or any of the Guarantors of Indebtedness of the Company or any Guarantor that was permitted to
be incurred by another provision of this Section 4.09; 
 (9) the incurrence by the Company or any of its Restricted
Subsidiaries of obligations relating to net gas balancing positions arising in the ordinary course of business and consistent with past practice; 

(10) the incurrence by the Company’s Unrestricted Subsidiaries of Non-Recourse Debt, provided, however, that if any such
Indebtedness ceases to be Non-Recourse Debt of an Unrestricted Subsidiary, such event will be deemed to constitute an incurrence of Indebtedness by a Restricted Subsidiary of the Company that was not permitted by this clause (10); 

(11) the incurrence by the Company or any of its Restricted Subsidiaries of Indebtedness in respect of bid, performance, surety
and similar bonds issued for the account of the Company and any of its Restricted Subsidiaries in the ordinary course of business, including guarantees and obligations of the Company and any of its Restricted Subsidiaries with respect to letters of
credit supporting such obligations (in each case other than an obligation for money borrowed); 
 (12) the incurrence by the
Company or any of its Restricted Subsidiaries of Indebtedness arising from agreements of the Company or any of its Restricted Subsidiaries providing for indemnification, adjustment of purchase price or similar obligations, in each case, incurred or
assumed in connection with the disposition of any business, assets or Capital Stock of a Subsidiary, provided that the maximum aggregate liability in respect of all such Indebtedness shall at no time exceed the gross proceeds actually received by
the Company and its Restricted Subsidiaries in connection with such disposition; 

  
 39 

 (13) Indebtedness arising from the honoring by a bank or other financial
institution of a check, draft or similar instrument inadvertently (except in the case of daylight overdrafts) drawn against insufficient funds in the ordinary course of business; provided, however, that such Indebtedness is promptly
extinguished; 
 (14) Indebtedness arising in connection with endorsement of instruments for deposit in the ordinary course
of business; 
 (15) Indebtedness owed on a short-term basis to banks and other financial institutions incurred in the
ordinary course of business of the Company and any Restricted Subsidiary with such banks or financial institutions that arises in connection with ordinary banking arrangements to manage cash balances of the Company and any Restricted Subsidiary;

 (16) the incurrence by the Company or any of its Restricted Subsidiaries of Acquired Debt in connection with a transaction
meeting either of the financial tests set forth in clause (4) under Section 5.01 hereof; and 
 (17) the incurrence
by the Company or any of its Restricted Subsidiaries of additional Indebtedness in an aggregate principal amount (or accreted value, as applicable) at any time outstanding, not to exceed the greater of (a) $250.0 million or (b) 2.5% of
ACNTA as of the date of incurrence. 
 For purposes of determining compliance with this Section 4.09, in the event that an item of
Indebtedness (including Acquired Debt) meets the criteria of more than one of the categories of Permitted Debt described in clauses (1) through (17) above, or is entitled to be incurred pursuant to the first paragraph of this
Section 4.09, the Company will be permitted to divide and classify (or later divide, classify, re-divide or reclassify in whole or in part in its sole discretion) such item of Indebtedness in any manner that complies with this covenant, except
that any indebtedness under Credit Facilities on the Issue Date (after giving effect to the offering of Initial Notes and the application of the proceeds thereof contemplated by the prospectus relating to such offering) shall be considered incurred
under the first paragraph of this Section 4.09. 
 The accrual of interest, the accretion or amortization of original issue discount,
the payment of interest on any Indebtedness in the form of additional Indebtedness with the same terms, and the payment of dividends on Disqualified Stock in the form of additional shares of the same class of Disqualified Stock will not be deemed to
be an incurrence of Indebtedness or an issuance of Disqualified Stock for purposes of this Section 4.09; provided, in each such case, that the amount thereof is included in Fixed Charges of the Company as accrued. Notwithstanding any other
provision of this covenant, the maximum amount of Indebtedness that the Company or any Restricted Subsidiary may incur pursuant to this covenant shall not be deemed exceeded solely as a result of fluctuations in exchange rates or currency values.

 Section 4.10. Limitation on Asset Sales. 

The Company will not, and will not permit any of its Restricted Subsidiaries to, consummate an Asset Sale unless: 

  
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 (1) the Company (or the Restricted Subsidiary, as the case may be) receives
consideration at the time of the Asset Sale at least equal to the fair market value of the assets or Equity Interests issued or sold or otherwise disposed of; 

(2) the fair market value is determined by the Company’s Board of Directors and evidenced by a resolution of the Board of
Directors set forth in an Officers’ Certificate delivered to the Trustee; and 
 (3) at least 75% of the consideration
received in the Asset Sale by the Company or such Restricted Subsidiary is in the form of cash or Cash Equivalents. For purposes of this clause (3) of Section 4.10 only, each of the following will be deemed to be cash or Cash Equivalents:

 (a) any liabilities, as shown on the Company’s or such Restricted Subsidiary’s most recent balance sheet, of the
Company or any Subsidiary (other than contingent liabilities and liabilities that are by their terms subordinated to the Notes or any Subsidiary Guarantee) that are assumed by the transferee of any such assets pursuant to a novation agreement that
releases the Company or such Subsidiary from further liability; 
 (b) any securities, notes or other obligations received by
the Company or any such Restricted Subsidiary from such transferee that are converted by the Company or such Subsidiary into cash within 180 days of the receipt thereof, to the extent of the cash received in that conversion; and 

(c) with respect to any Asset Sale of oil and natural gas properties where the Company or such Restricted Subsidiary retains an
interest in such property, the aggregate costs and expenses of the Company or such Restricted Subsidiary related to the exploration, development, completion or production of such properties and activities related thereto which the transferee (or an
Affiliate thereof) agrees to pay. 
 Within 360 days after the receipt of any Net Proceeds from an Asset Sale, the Company or any such
Restricted Subsidiary may apply those Net Proceeds at its option to any combination of the following: 
 (I) to prepay, repay, redeem or
repurchase any Indebtedness of the Company or a Guarantor (other than intercompany Indebtedness, Capital Stock or Indebtedness that is subordinated to the Notes or the Subsidiary Guarantees) or any Indebtedness of a Restricted Subsidiary that is not
a Guarantor (other than intercompany Indebtedness); 
 (II) to acquire all or substantially all of the properties or assets of one or more
other Persons primarily engaged in the Oil and Gas Business, and, for this purpose, a division or line of business of a Person shall be treated as a separate Person; 

(III) to acquire a majority of the Voting Stock of one or more other Persons primarily engaged in the Oil and Gas Business; 

(IV) to make one or more capital expenditures; or 

  
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 (V) to acquire other long-term assets that are used or useful in the Oil and Gas Business. 

Pending the final application of any Net Proceeds, the Company or any such Restricted Subsidiary may temporarily reduce revolving credit
borrowings or otherwise invest the Net Proceeds in any manner that is not prohibited by the Indenture. Any Net Proceeds from Asset Sales that are not applied or invested as provided in the preceding paragraph will constitute “Excess
Proceeds.” 
 On the 361st day after the Asset Sale (or, at the Company’s option, any earlier date), if the aggregate amount of
Excess Proceeds then exceeds $50.0 million, the Company will make an Asset Sale Offer to all Holders of Notes, and to all holders of Pari Passu Indebtedness then outstanding, to purchase the maximum principal amount of Notes and such Pari Passu
Indebtedness that may be purchased out of the Excess Proceeds, pursuant to the terms in Section 3.04 hereof and this Section 4.10. The offer price in any Asset Sale Offer will be equal to 100% of the principal amount plus accrued and
unpaid interest, if any, to the Settlement Date, subject to the right of Holders of record on the relevant record date to receive interest due on an Interest Payment Date that is on or prior to the Settlement Date, and will be payable in cash. If
any Excess Proceeds remain after consummation of an Asset Sale Offer, the Company may use those Excess Proceeds for any purpose not otherwise prohibited by the Indenture. If the aggregate principal amount of Notes and Pari Passu Indebtedness
tendered in such Asset Sale Offer exceeds the amount of Excess Proceeds, the Trustee will select the Notes and such Pari Passu Indebtedness to be purchased on a pro rata basis (with such adjustments as may be deemed appropriate by the Company so
that only Notes in denominations of $2,000 or any integral multiple of $1,000 in excess thereof, will be purchased). Upon completion of each Asset Sale Offer, the amount of Excess Proceeds will be reset at zero. 

The Company will comply with the requirements of Rule 14e-1 under the Exchange Act and any other securities laws and regulations thereunder to
the extent those laws and regulations are applicable in connection with each repurchase of Notes pursuant to an Asset Sale Offer. To the extent that the provisions of any securities laws or regulations conflict with the provisions of this
Section 4.10, the Company will comply with the applicable securities laws and regulations and will not be deemed to have breached its obligations under such provisions by virtue of such compliance. 

Section 4.11. Limitation on Transactions with Affiliates. 

The Company will not, and will not permit any of its Restricted Subsidiaries to, make any payment to, or sell, lease, transfer or otherwise
dispose of any of its properties or assets to, or purchase any property or assets from, or enter into or make or amend any transaction, contract, agreement, understanding, loan, advance or guarantee with, or for the benefit of, any Affiliate (each,
an “Affiliate Transaction”) involving aggregate consideration in excess of $1.0 million, unless: 
 (1) the
Affiliate Transaction is on terms that are not materially less favorable to the Company or the relevant Restricted Subsidiary than those that would have been 

  
 42 

 
obtained in a comparable transaction by the Company or such Restricted Subsidiary with an unrelated Person or, if in the good faith judgment of the Company’s Board of Directors, no
comparable transaction is available with which to compare such Affiliate Transaction, such Affiliate Transaction is otherwise fair to the Company or the relevant Restricted Subsidiary from a financial point of view; and 

(2) the Company delivers to the Trustee: 

(a) with respect to any Affiliate Transaction or series of related Affiliate Transactions involving aggregate consideration in
excess of $20.0 million, an Officers’ Certificate certifying that such Affiliate Transaction complies with this Section 4.11; and 

(b) with respect to any Affiliate Transaction or series of related Affiliate Transactions involving aggregate consideration in
excess of $50.0 million, an Officers’ Certificate certifying that such Affiliate Transaction has been approved by a majority of the disinterested members of the Board of Directors. 

The following items will not be deemed to be Affiliate Transactions and, therefore, will not be subject to the provisions of the prior
paragraph of this Section 4.11: 
 (1) any employment, severance or consulting agreement or other compensation
agreement, arrangement or plan, or any amendment thereto, entered into by the Company or any of its Restricted Subsidiaries in the ordinary course of business; 

(2) transactions between or among any of the Company and its Restricted Subsidiaries; 

(3) transactions with a Person that is an Affiliate of the Company solely because the Company owns an Equity Interest in such
Person; 
 (4) payment of reasonable directors’ fees, consulting fees and other benefits to persons who are not
otherwise Affiliates of the Company; 
 (5) provision of officers’ and directors’ indemnification and insurance in
the ordinary course of business to the extent permitted by law; 
 (6) sales of Equity Interests (other than Disqualified
Stock) to Affiliates of the Company; 
 (7) Permitted Investments and Restricted Payments that are permitted by
Section 4.07 hereof; 
 (8) any transaction in which the Company or its Restricted Subsidiaries, as the case may be,
deliver to the Trustee a letter from an accounting, appraisal or investment banking firm of national standing stating that such transaction is fair to the Company or its Restricted Subsidiary from a financial point of view or that such transaction
meets the requirements of clause (1) of the initial paragraph above; 

  
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 (9) transactions with Unrestricted Subsidiaries, Affiliates, customers, clients,
suppliers or purchasers or sellers of goods or services, or lessors or lessees of property, in each case in the ordinary course of business and otherwise in compliance with the terms of the Indenture which are, in the aggregate (taking into account
all the costs and benefits associated with such transactions) materially no less favorable to the Company or its Restricted Subsidiaries than those that would have been obtained in a comparable transaction by the Company or such Restricted
Subsidiary with an unrelated person, in the good faith determination of the Company’s Board of Directors, or are on terms at least as favorable as might reasonably have been obtained at such time from an unaffiliated party; and 

(10) transactions between the Company or any of its Restricted Subsidiaries and any Person, a director of which is also a
director of the Company or any direct or indirect parent of the Company; provided, however, that such director abstains from voting as a director of the Company or such direct or indirect parent, as the case may be, on any matter involving such
other Person. 
 Section 4.12. Limitation on Liens. 

The Company will not and will not permit any of its Restricted Subsidiaries to, create, incur, assume or otherwise cause or suffer to exist or
become effective any Lien of any kind (other than Permitted Liens) securing Indebtedness or Attributable Debt upon any of their property or assets, now owned or hereafter acquired, unless the Notes or any Subsidiary Guarantee of such Restricted
Subsidiary, as applicable, is secured on an equal and ratable basis (or on a senior basis to, in the case of obligations subordinated in right of payment to the Notes or such Subsidiary Guarantee, as the case may be) with the obligations so secured
until such time as such obligations are no longer secured by a Lien. 
 Section 4.13. Additional Subsidiary Guarantees. 

If the Company or any of its Restricted Subsidiaries acquires or creates another Material Domestic Subsidiary after the Issue Date, or if any
Restricted Subsidiary that is not already a Guarantor guarantees any other Indebtedness of the Company in a principal amount in excess of $1.0 million after such date, then in either case that Subsidiary will become a Guarantor by executing a
supplemental indenture substantially in the form of Exhibit B hereto and delivering it to the Trustee within 20 Business Days of the date on which it was acquired or created or guaranteed such Indebtedness of the Company, as the case may be,
together with any Opinion of Counsel described in Section 903 of the Original Indenture; provided, however, that (a) the foregoing shall not apply to Subsidiaries of the Company that have properly been designated as Unrestricted
Subsidiaries in accordance with the Indenture for so long as they continue to constitute Unrestricted Subsidiaries, and (b) Whiting Programs, Inc. shall not be required to become a Guarantor unless it guarantees Indebtedness of the Company in a
principal amount in excess of $1.0 million other than the 2014 Notes that are outstanding on the Issue Date. 

  
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 Section 4.14. Corporate Existence. 

Except as otherwise permitted pursuant to the terms hereof (including consolidation and merger permitted by Section 5.01 hereof), the
Company shall do or cause to be done all things necessary to preserve and keep in full force and effect its corporate existence, and the corporate, partnership or other existence of each of its Restricted Subsidiaries, in accordance with the
respective organizational documents (as the same may be amended from time to time) of the Company or any such Restricted Subsidiary; provided, however, that the Company shall not be required to preserve the existence of any of its Restricted
Subsidiaries if the Company shall determine that the preservation thereof is no longer desirable in the conduct of the business of the Company and its Restricted Subsidiaries taken as a whole and that the loss thereof is not adverse in any material
respect to the Holders of the Notes. 
 Section 4.15. Offer to Repurchase Upon Change of Control. 

(1) Within 30 days following the occurrence of a Change of Control, the Company shall make an offer (a “Change of Control
Offer”) to repurchase all or any part (equal to $2,000 or any integral multiple of $1,000 in excess thereof) of each Holder’s Notes at a purchase price (the “Change of Control Payment”) in cash equal to 101% of the aggregate
principal amount of Notes repurchased, plus accrued and unpaid interest, if any, thereon to the date of settlement (the “Change of Control Settlement Date”), subject to the right of Holders of record on the relevant record date to receive
interest due on an Interest Payment Date that is on or prior to the Change of Control Settlement Date. Within 30 days following a Change of Control, the Company shall mail a notice of the Change of Control Offer to each Holder and the Trustee
describing the transaction that constitutes the Change of Control and stating: 
 (a) that the Change of Control Offer is
being made pursuant to this Section 4.15 and that all Notes validly tendered and not withdrawn will be accepted for payment; 

(b) the purchase price and the purchase date, which shall be no earlier than 30 days but no later than 60 days from the date
such notice is mailed, or in the case of a notice mailed in advance of a Change of Control, no earlier than 30 days and no later than 60 days from the date of such Change of Control (the “Change of Control Purchase Date”); 

(c) that the Change of Control Offer will expire as of the time specified in such notice on the Change of Control Purchase Date
and that the Company shall pay the Change of Control Purchase Price for all Notes purchased as of the Change of Control Purchase Date promptly thereafter on the Change of Control Settlement Date; 

(d) that any Note not tendered will continue to accrue interest; 

  
 45 

 (e) that, unless the Company defaults in the payment of the Change of Control
Payment, all Notes accepted for payment pursuant to the Change of Control Offer shall cease to accrue interest after the Change of Control Settlement Date; 

(f) that Holders electing to have any Notes purchased pursuant to a Change of Control Offer will be required to surrender the
Notes, properly endorsed for transfer, together with the form entitled “Option of Holder to Elect Purchase” on the reverse of the Notes completed and such customary documents as the Company may reasonably request, to the Paying Agent at
the address specified in the notice prior to the termination of the Change of Control Offer on the Change of Control Purchase Date; 

(g) that Holders will be entitled to withdraw their election if the Paying Agent receives, prior to the termination of the
Change of Control Offer, a telegram, telex, facsimile transmission or letter setting forth the name of the Holder, the principal amount of Notes delivered for purchase, and a statement that such Holder is withdrawing its election to have the Notes
purchased; and 
 (h) that Holders whose Notes are being purchased only in part will be issued new Notes equal in principal
amount to the unpurchased portion of the Notes surrendered, which unpurchased portion must be equal to $2,000 in principal amount or any integral multiple of $1,000 in excess thereof. 

If any of the Notes subject to a Change of Control Offer is in the form of a Global Note, then the Company shall modify such notice to the
extent necessary to accord with the procedures of the Depository applicable to repurchases. Further, the Company shall comply with the requirements of Rule 14e-1 under the Exchange Act and any other securities laws and regulations thereunder to the
extent such laws and regulations are applicable in connection with the repurchase of Notes as a result of a Change of Control. To the extent that the provisions of any securities laws or regulations conflict with the provisions of this
Section 4.15, the Company will comply with the applicable securities laws and regulations and will not be deemed to have breached its obligations under such provisions by virtue of such compliance. 

(2) On the Change of Control Settlement Date, the Company shall, to the extent lawful, accept for payment all Notes or portions
thereof ($2,000 or any integral $1,000 multiple in excess thereof) properly tendered pursuant to the Change of Control Offer. Promptly thereafter on the Change of Control Settlement Date the Company shall: 

(a) deposit with the Paying Agent by 11:00 a.m., New York City time, an amount equal to the Change of Control Payment in
respect of all Notes or portions thereof so tendered; and 
 (b) deliver or cause to be delivered to the Trustee the Notes so
accepted together with an Officers’ Certificate stating the aggregate principal amount of Notes or portions of Notes being purchased by the Company. 

  
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 On the Change of Control Settlement Date, the Paying Agent shall mail to each Holder of Notes
properly tendered the Change of Control Payment for such Notes (or, if all the Notes are then in global form, make such payment through the facilities of the Depository) and the Trustee shall authenticate and mail (or cause to be transferred by book
entry) to each Holder a new Note equal in principal amount to any unpurchased portion of the Notes surrendered, if any; provided, however, that each such new Note will be in a principal amount of $2,000 or any integral multiple of $1,000 in excess
thereof. The Company shall publicly announce the results of the Change of Control Offer on or as soon as practicable after the Change of Control Settlement Date. 

(c) The Change of Control provisions described above shall be applicable whether or nor any other provisions of the Indenture
are applicable. 
 (d) [Intentionally Omitted.] 

(e) The Company shall not be required to make a Change of Control Offer following a Change of Control (1) if a third party
makes the Change of Control Offer in the manner, at the time and otherwise in compliance with the requirements set forth in the Indenture applicable to a Change of Control Offer made by the Company and purchases all Notes properly tendered and not
withdrawn under such Change of Control Offer or (2) notice of redemption has been given pursuant to Section 3.02 hereof, unless and until there is a default in payment of the applicable Redemption Price. Notwithstanding anything to the
contrary contained herein, a Change of Control Offer by the Company or a third party may be made in advance of a Change of Control, and conditioned upon the occurrence of a Change in Control, if a definitive agreement is in place for the Change of
Control at the time the Change of Control Offer is made. 
 (3) In the event that Holders of Notes of not less than 90% of
the aggregate principal amount of the outstanding Notes accept a Change of Control Offer and the Company purchases all of the Notes held by such holders, the Company will have the right, upon not less than 30 nor more than 60 days, prior notice
given not more than 30 days following the purchase pursuant to the Chang of Control Offer, to redeem all of the Notes that remain outstanding following such purchase at a purchase price equal to the Change of Control Payment plus, to the extent not
included in the Change of Control Payment, accrued and unpaid interest on the Notes that remain outstanding, if any, to the Change of Control Settlement Date, subject to the right of Holders of record on the relevant record date to receive interest
due on an interest payment date that is on or prior to the Change of Control Settlement Date. Any such redemption shall be effected in accordance with Article Eleven of the Original Indenture. 

  
 47 

 Section 4.16. No Inducements. 

The Company shall not, and the Company shall not permit any of its Subsidiaries, either directly or indirectly, to pay (or cause to be paid)
any consideration, whether by way of interest, fee or otherwise, to any Beneficial Owner or Holder of the Notes for or as an inducement to any consent to any waiver, amendment or supplement of any terms or provisions of the Indenture or the Notes,
unless such consideration is offered to be paid (or agreed to be paid) to all Beneficial Owners and Holders of the Notes which so consent in the time frame set forth in the solicitation documents relating to such consent. 

Section 4.17. Designation of Restricted and Unrestricted Subsidiaries. 

The Board of Directors of the Company may designate any Restricted Subsidiary of the Company to be an Unrestricted Subsidiary if that
designation would not cause a Default. If a Restricted Subsidiary of the Company is designated as an Unrestricted Subsidiary, the aggregate fair market value of all outstanding Investments owned by the Company and its Restricted Subsidiaries in the
Subsidiary properly designated will be deemed to be an Investment made as of the time of the designation and will reduce the amount available for Restricted Payments under the first paragraph of Section 4.07 hereof or represent Permitted
Investments, as determined by the Company. That designation shall only be permitted if the Investment would be permitted at that time and if the Subsidiary so designated otherwise meets the definition of an Unrestricted Subsidiary. 

The Board of Directors of the Company may at any time designate any Unrestricted Subsidiary to be a Restricted Subsidiary of the Company;
provided that such designation will be deemed to be an incurrence of Indebtedness by a Restricted Subsidiary of the Company of any outstanding Indebtedness of such Unrestricted Subsidiary and such designation will only be permitted if (1) such
Indebtedness is permitted under Section 4.09 hereof, calculated on a pro forma basis as if such designation had occurred at the beginning of the four-quarter reference period, and (2) no Default or Event of Default would be in existence
following such designation. 
 Section 4.18. Covenant Termination. 

If at any time (a) the rating assigned to the Notes by both S&P and Moody’s is an Investment Grade Rating and (b) no Default
has occurred and is continuing under this Indenture, then upon delivery by the Company to the Trustee of an Officers’ Certificate to the foregoing effect, the Company and its Restricted Subsidiaries will no longer be subject to the following
provisions of this Indenture: Sections 4.07, 4.08, 4.09, 4.10 or 4.11 or clause (d) of Section 5.01. The Company and its Restricted Subsidiaries will remain subject to all other provisions of the Indenture. 

ARTICLE 5 
 SUCCESSORS 

The provisions of Article Eight of the Original Indenture shall not apply to the Notes, and in lieu thereof the following provisions of this
Article 5 shall apply to the Notes. 

  
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 Section 5.01. Merger, Consolidation, or Sale of Assets. 

The Company shall not, directly or indirectly, (1) consolidate or merge with or into another Person (whether or not the Company is the
surviving entity), or (2) sell, assign, transfer, lease, convey or otherwise dispose of all or substantially all of the properties or assets of the Company and its Restricted Subsidiaries taken as a whole, in one or more related transactions
to, another Person, unless: 
 (a) either (1) the Company is the surviving corporation or (2) the Person formed by
or surviving any such consolidation or merger (if other than the Company) or to which such sale, assignment, transfer, lease, conveyance or other disposition shall have been made is an entity organized or existing under the laws of the United
States, any state of the United States or the District of Columbia; provided that if the Company or such other Person is not a corporation, a Restricted Subsidiary of the Company that is a corporation shall assume by supplemental indenture all
obligations of the Company under the Notes and the Indenture as a co-issuer of the Notes; 
 (b) the Person formed by or
surviving any such consolidation or merger (if other than the Company) or the Person to which such sale, assignment, transfer, lease, conveyance or other disposition shall have been made assumes all the obligations of the Company under the Notes and
the Indenture pursuant to a supplemental indenture or other agreement in a form reasonably satisfactory to the Trustee; 

(c) immediately after such transaction no Default or Event of Default exists; 

(d) the Company or the Person formed by or surviving any such consolidation or merger (if other than the Company), or to which
such sale, assignment, transfer, lease, conveyance or other disposition shall have been made will, at the time of such transaction and after giving pro forma effect thereto and any related financing transaction as if the same had occurred at the
beginning of the applicable four-quarter period, either (a) be permitted to incur at least $1.00 of additional Indebtedness pursuant to the Fixed Charge Coverage Ratio test set forth in the first paragraph of Section 4.09 hereof or
(b) have a Fixed Charge Coverage Ratio that is equal to or greater than the Fixed Charge Coverage Ratio of the Company immediately prior to such consolidation, merger, sale, assignment, transfer, lease, conveyance or other disposition; and 

(e) the Company shall have delivered to the Trustee an Officers’ Certificate and an Opinion of Counsel, each stating that
such consolidation, merger or disposition and such supplemental indenture (if any) comply with the Indenture; 
 provided, however, that
(i) this Section 5.01 shall not apply to any sale, assignment, transfer, lease, conveyance or other disposition of assets between or among the Company and its Restricted Subsidiaries and (ii) clauses (c) and (d) hereof shall
not apply to any merger or consolidation of the Company (a) with or into one of its Restricted Subsidiaries for any purpose or (b) with or into an Affiliate solely for the purpose of reincorporation of the Company in another
jurisdiction. 

  
 49 

 Section 5.02. Successor Entity Substituted. 

Upon any consolidation or merger, or any sale, assignment, transfer, lease, conveyance or other disposition of all or substantially all of the
properties or assets of the Company and its Restricted Subsidiaries taken as a whole in accordance with Section 5.01 hereof, the successor entity formed by such consolidation or into or with which the Company is merged or to which such sale,
assignment, transfer, lease, conveyance or other disposition is made shall succeed to, and may exercise every right and power of, the Company under the Indenture with the same effect as if such successor entity had been named as the Company herein
and shall be substituted for the Company (so that from and after the date of such consolidation, merger, sale, assignment, transfer, lease, conveyance or other disposition, the provisions of the Indenture referring to the “Company” shall
refer instead to the successor entity and not to the Company); and thereafter, if the Company is dissolved following a transfer of all or substantially all of the properties or assets of the Company and its Restricted Subsidiaries taken as a whole
in accordance with the Indenture, the Company shall be discharged and released from all obligations and covenants under the Indenture and the Notes. The Trustee shall enter into a supplemental indenture to evidence the succession and substitution of
such successor Person and such discharge and release of the Company. 
 ARTICLE 6 

DEFAULTS AND REMEDIES 
 Section 6.01. Events of
Default. 
 In accordance with Section 301(19) of the Original Indenture, Section 501 of the Original Indenture is hereby
amended to read in its entirety as follows with respect to the Notes: 
 “An ‘Event of Default’ occurs if one of the
following shall have occurred and be continuing (whatever the reason for such Event of Default and whether it shall be involuntary or be effected by operation of law): 

(1) the Company defaults in the payment when due of interest with respect to the Notes, and such default continues for a period
of 30 days; 
 (2) the Company defaults in the payment of the principal of or premium, if any, on the Notes when due at its
Stated Maturity, upon optional redemption, upon required repurchase, upon declaration or otherwise; 
 (3) the Company fails
to comply with the provisions of Section 4.07, 4.09, 4.10, 4.15 or 5.01 of the First Supplemental Indenture; 
 (4) the
Company or a Guarantor fails to comply with any other covenant or other agreement in the Indenture or the Notes for 60 days (or 180 days in the case of a Reporting Failure) after notice to the Company by the Trustee or the Holders of at least 25% in
principal amount of the Notes then outstanding of such failure; 

  
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 (5) a default occurs under any mortgage, indenture or instrument under which
there may be issued or by which there may be secured or evidenced any Indebtedness for money borrowed by the Company or any of its Restricted Subsidiaries (or the payment of which is guaranteed by the Company or any of its Restricted Subsidiaries),
whether such Indebtedness or guarantee now exists or is created after the Issue Date, if such default: 
 (a) is caused by a
failure to pay principal of, or interest or premium, if any, on such Indebtedness prior to the expiration of any grace period provided in such Indebtedness (a “Payment Default”); or 

(b) results in the acceleration of such Indebtedness prior to its Stated Maturity 

and, in each case, the principal amount of any such Indebtedness, together with the principal amount of any other such Indebtedness under which
there has been a Payment Default or the maturity of which has been so accelerated, aggregates $50.0 million or more; provided, that if any such default is cured or waived or any such acceleration is rescinded, or such Indebtedness is repaid, within
a period of 10 days from the continuation of such default beyond the applicable grace period or the occurrence of such acceleration, as the case may be, such Event of Default under the Indenture and any consequential acceleration of the Notes shall
be automatically rescinded; 
 (6) the Company or any of its Significant Subsidiaries fails to pay final judgments
aggregating in excess of $50.0 million, which judgments are not paid, discharged or stayed (including a stay pending appeal) for a period of 60 days after the date of such final judgment (or, if later, the date when payment is due pursuant to such
judgment); 
 (7) except as permitted by this Indenture, any Subsidiary Guarantee is held in any judicial proceeding to be
unenforceable or invalid or ceases for any reason to be in full force and effect or any Guarantor, or any Person acting on behalf of any Guarantor, denies or disaffirms its obligations under its Subsidiary Guarantee (other than by reason of release
of a Guarantor from its Subsidiary Guarantee in accordance with the terms of the Indenture); and 
 (8) the Company, any
Significant Subsidiary of the Company or any group of Subsidiaries of the Company that, taken together, would constitute a Significant Subsidiary pursuant to or within the meaning of Bankruptcy Law: 

(a) commences a voluntary case, 

(b) consents in writing to the entry of an order for relief against it in an involuntary case, 

(c) consents in writing to the appointment of a Custodian of it or for all or substantially all of its property, 

(d) makes a general assignment for the benefit of its creditors, or 

  
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 (e) admits in writing it generally is not paying its debts as they become due; or

 (9) a court of competent jurisdiction enters an order or decree under any Bankruptcy Law that: 

(a) is for relief against the Company, any Significant Subsidiary of the Company or any group of Subsidiaries of the Company
that, taken together, would constitute a Significant Subsidiary in an involuntary case; 
 (b) appoints a Custodian of the
Company, any Significant Subsidiary of the Company or any group of Subsidiaries of the Company that, taken together, would constitute a Significant Subsidiary or for all or substantially all of the property of the Company, any Significant Subsidiary
of the Company or any group of Subsidiaries of the Company, that, taken together, would constitute a Significant Subsidiary; or 

(c) orders the liquidation of the Company, any Significant Subsidiary of the Company or any group of Subsidiaries of the
Company that, taken together, would constitute a Significant Subsidiary; 
 and the order or decree remains unstayed and in
effect for 60 consecutive days.” 
 Section 6.02. Acceleration. 

Also as permitted by Section 301(19) of the Original Indenture, the first paragraph of Section 502 of the Original Indenture is
hereby amended to read in its entirety as follows with respect to the Notes: 
 “If any Event of Default occurs and is continuing, the
Trustee, by notice to the Company, or the Holders of at least 25% in aggregate principal amount of the then outstanding Notes, by notice to the Company and the Trustee, may declare all the Notes to be due and payable immediately. Upon any such
declaration, the Notes shall become due and payable immediately, together with all accrued and unpaid interest and premium, if any, thereon. Notwithstanding the preceding, if an Event of Default specified in clause (8) or (9) of
Section 501 hereof occurs with respect to the Company, any Significant Subsidiary of the Company or any group of Subsidiaries of the Company that, taken together, would constitute a Significant Subsidiary, all outstanding Notes shall become due
and payable without further action or notice, together with all accrued and unpaid interest and premium, if any, thereon.” 
 Section 6.03.
[Intentionally Omitted.] 
 Section 6.04. Waiver of Usury, Stay or Extension of Laws. 

Section 515 of the Original Indenture shall not apply to the Notes inasmuch as it is duplicative of Section 4.06 of this First
Supplemental Indenture. 

  
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 ARTICLE 7 

TRUSTEE; REPORTS 
 Section 7.01. Notice of
Defaults. 
 With respect to the Notes only, the proviso in the first sentence of Section 602 of the Original Indenture shall be
deemed inapplicable. 
 Section 7.02. [Intentionally Omitted.]  

Section 7.03. Compensation and Reimbursement. 

With respect to the Notes only, Section 607 of the Original Indenture is hereby amended to include the following: 

As security for the performance of the obligations of the Company under this Section the Trustee shall have a lien prior to the Notes upon all
property and funds held or collected by the Trustee as such, except funds held in trust for the payment of principal of (and premium, if any) or interest on particular Notes. 

In addition to, but without prejudice to its other rights under this Indenture, when the Trustee incurs expenses or renders services in
connection with an Event of Default specified in Sections 501(8) or 501(9) hereof, the expenses (including the reasonable charges and expenses of its counsel) and the compensation for the services are intended to constitute expenses of
administration under any applicable federal or state bankruptcy, insolvency or other similar law. 
 “Trustee” for purposes of
this Section shall include any predecessor Trustee. 
 The provisions of this Section shall survive the satisfaction and discharge of the
Notes, the termination for any reason of this Indenture, and the resignation or removal of the Trustee. 

  
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 Section 7.04. Reports by Company and Subsidiary Guarantors. 

Section 704 of the Original Indenture shall not apply to the Notes inasmuch as its requirements are duplicative of those set forth in
Section 4.03(a) of this First Supplemental Indenture. 
 ARTICLE 8 

LEGAL DEFEASANCE AND COVENANT DEFEASANCE 

The provisions of Article Fifteen of the Original Indenture shall not apply to the Notes, and in lieu thereof the following provisions of this
Article 8 shall apply to the Notes. 
 Section 8.01. Option to Effect Legal Defeasance or Covenant Defeasance. 

The Company may, at the option of its Board of Directors evidenced by a resolution set forth in an Officers’ Certificate, at any time,
exercise its rights under either Section 8.02 or 8.03 hereof with respect to all outstanding Notes upon compliance with the conditions set forth below in this Article 8. 

Section 8.02. Legal Defeasance and Discharge. 

Upon the Company’s exercise under Section 8.01 hereof of the option applicable to this Section 8.02, the Company shall, subject
to the satisfaction of the conditions set forth in Section 8.04 hereof, be deemed to have discharged its obligations with respect to all outstanding Notes, and each Guarantor shall be deemed to have discharged its obligations with respect to
its Subsidiary Guarantee, on the date the conditions set forth in Section 8.04 below are satisfied (hereinafter, “Legal Defeasance”). For this purpose, Legal Defeasance means that the Company shall be deemed to have paid and
discharged the entire Indebtedness represented by the outstanding Notes, and each Guarantor shall be deemed to have paid and discharged its Subsidiary Guarantee (which in each case shall thereafter be deemed to be “outstanding” only for
the purposes of Section 8.05 hereof and the other Sections of this First Supplemental Indenture and the Sections of the Original Indenture referred to in (a) and (b) below) and to have satisfied all its other obligations under such
Notes or Subsidiary Guarantee and the Indenture (and the Trustee, on demand of and at the expense of the Company, shall execute proper instruments acknowledging the same), except for the following provisions which shall survive until otherwise
terminated or discharged hereunder: (a) the rights of Holders of outstanding Notes to receive solely from the trust fund described in Section 8.04 hereof, and as more fully set forth in such Section, payments in respect of the principal of
and premium, if any, and interest on such Notes when such payments are due, (b) the Company’s obligations with respect to such Notes under Sections 304, 305, 306 and 1003 of the Original Indenture and Section 4.02 hereof, (c) the
rights, powers, trusts, duties and immunities of the Trustee hereunder and the Company’s 

  
 54 

 
obligations in connection therewith and (d) the Legal Defeasance provisions of this Article 8. Subject to compliance with this Article 8, the Company may exercise its option under this
Section 8.02 notwithstanding the prior exercise of its option under Section 8.03 hereof. 
 If the Company exercises its Legal
Defeasance option, each Guarantor will be released and relieved of any obligations under its Subsidiary Guarantee and any security for the Notes (other than the trust) will be released. 

Section 8.03. Covenant Defeasance. 
 Upon
the Company’s exercise under Section 8.01 hereof of the option applicable to this Section 8.03, the Company shall, subject to the satisfaction of the conditions set forth in Section 8.04 hereof, be released from its obligations
under the covenants contained in Article 4 hereof (other than those in Sections 4.01, 4.02, 4.06 and 4.14 hereof) and in clause (d) of Section 5.01 hereof on and after the date the conditions set forth below are satisfied (hereinafter,
“Covenant Defeasance”), and the Notes shall thereafter be deemed not “outstanding” for the purposes of any direction, waiver, consent or declaration or act of Holders (and the consequences of any thereof) in connection with such
covenants, but shall continue to be deemed “outstanding” for all other purposes hereunder (it being understood that such Notes shall not be deemed outstanding for accounting purposes). For this purpose, Covenant Defeasance means that, with
respect to the outstanding Notes, the Company and any Guarantor may omit to comply with and shall have no liability in respect of any term, condition or limitation set forth in any such covenant, whether directly or indirectly, by reason of any
reference elsewhere herein to any such covenant or by reason of any reference in any such covenant to any other provision herein or in any other document and such omission to comply shall not constitute a Default or an Event of Default with respect
to the Notes under Section 501 of the Original Indenture (as amended by Section 6.01 of this First Supplemental Indenture), but, except as specified above, the remainder of the Indenture and such Notes shall be unaffected thereby. In
addition, upon the Company’s exercise under Section 8.01 hereof of the option applicable to this Section 8.03 hereof, subject to the satisfaction of the conditions set forth in Section 8.04 hereof, Sections 501(5) through 501(7)
of the Original Indenture (as amended by Section 6.01 of this First Supplemental Indenture) shall not constitute Events of Default with respect to the Notes. 

If the Company exercises its Covenant Defeasance option, each Guarantor will be released and relieved of any obligations under its Subsidiary
Guarantee and any security for the Notes (other than the trust) will be released. 
 Section 8.04. Conditions to Legal or Covenant Defeasance. 

In order to exercise either Legal Defeasance or Covenant Defeasance: 

(i) the Company must irrevocably deposit with the Trustee, in trust, for the benefit of the Holders, cash in U.S. dollars,
non-callable Government Securities, or a combination thereof, in such amounts as will be sufficient, in the opinion of a nationally recognized investment bank, appraisal firm or firm of independent public accountants, to

  
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pay the principal of, premium, if any, and interest on the outstanding Notes on the date of fixed maturity or on the applicable redemption date, as the case may be, and the Company must specify
whether the Notes are being defeased to the date of fixed maturity or to a particular redemption date; 
 (ii) in the case of
an election under Section 8.02 hereof, the Company shall have delivered to the Trustee an Opinion of Counsel reasonably acceptable to the Trustee confirming that: 

(1) the Company has received from, or there has been published by, the Internal Revenue Service a ruling; or 

(2) since the Issue Date, there has been a change in the applicable federal income tax law, 

in either case to the effect that, and based thereon such Opinion of Counsel shall confirm that, the Holders of the outstanding Notes will not
recognize income, gain or loss for federal income tax purposes as a result of such Legal Defeasance and will be subject to federal income tax on the same amounts, in the same manner and at the same times as would have been the case if such Legal
Defeasance had not occurred; 
 (iii) in the case of an election under Section 8.03 hereof, the Company shall have
delivered to the Trustee an Opinion of Counsel reasonably acceptable to the Trustee confirming that the Holders of the outstanding Notes will not recognize income, gain or loss for federal income tax purposes as a result of such Covenant Defeasance
and will be subject to federal income tax on the same amounts, in the same manner and at the same times as would have been the case if such Covenant Defeasance had not occurred; 

(iv) no Default or Event of Default shall have occurred and be continuing on the date of such deposit (other than a Default or
Event of Default resulting from the incurrence of Indebtedness or the grant of Liens securing such Indebtedness, all or a portion of the proceeds of which will be used to defease the Notes pursuant to this Article 8 concurrently with such
incurrence or within 30 days thereof and any similar concurrent deposit relating to other Indebtedness, and the granting of Liens to secure such borrowing); 

(v) such Legal Defeasance or Covenant Defeasance shall not result in a breach or violation of, or constitute a default under,
any material agreement or instrument (other than the Indenture and the agreements governing any other Indebtedness being defeased, discharged or replaced) to which the Company or any of its Subsidiaries is a party or by which the Company or any of
its Subsidiaries is bound; 
 (vi) the Company shall have delivered to the Trustee an Officers’ Certificate stating that
the deposit was not made by the Company with the intent of preferring the Holders over any other creditors of the Company or with the intent of defeating, hindering, delaying or defrauding creditors of the Company or others; and 

  
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 (vii) the Company shall have delivered to the Trustee an Officers’
Certificate and an Opinion of Counsel, each stating that all conditions precedent provided for or relating to the Legal Defeasance or the Covenant Defeasance have been complied with. 

Section 8.05. Deposited Money and Government Securities to be Held in Trust; Other Miscellaneous Provisions. 

Subject to Section 8.06 hereof, all money and non-callable Government Securities (including the proceeds thereof) deposited with the
Trustee pursuant to Section 8.04 or 8.08 hereof in respect of the outstanding Notes shall be held in trust and applied by the Trustee, in accordance with the provisions of such Notes and the Indenture, to the payment, either directly or through
any Paying Agent (including the Company acting as Paying Agent) as the Trustee may determine, to the Holders of such Notes of all sums due and to become due thereon in respect of principal, premium, if any, and interest, but such money need not be
segregated from other funds except to the extent required by law. 
 The Company shall pay and indemnify the Trustee against any tax, fee or
other charge imposed on or assessed against the cash or non-callable Government Securities deposited pursuant to Section 8.04 or 8.08 hereof or the principal and interest received in respect thereof other than any such tax, fee or other charge
which by law is for the account of the Holders of the outstanding Notes. 
 Anything in this Article 8 to the contrary notwithstanding, the
Trustee shall deliver or pay to the Company from time to time upon the request of the Company any money or non-callable Government Securities held by it as provided in Section 8.04 or 8.08 hereof which, in the opinion of a nationally recognized
firm of independent public accountants expressed in a written certification thereof delivered to the Trustee (which may be the opinion delivered under Section 8.04(a) hereof), are in excess of the amount thereof that would then be required to
be deposited to effect an equivalent Legal Defeasance, Covenant Defeasance or Discharge, as the case may be. 
 Section 8.06. Repayment to Company.

 Subject to applicable escheat and abandoned property laws, any money deposited with the Trustee or any Paying Agent, or then held
by the Company, in trust for the payment of the principal of or premium or interest on any Note and remaining unclaimed for two years after such principal, premium or interest has become due and payable shall be paid to the Company on its request or
(if then held by the Company) shall be discharged from such trust; and the Holder of such Note shall thereafter, as a secured creditor, look only to the Company for payment thereof, and all liability of the Trustee or such Paying Agent with respect
to such trust money, and all liability of the Company as trustee thereof, shall thereupon cease; provided, however, that the Trustee or such Paying Agent, before being required to make any such repayment, may at the expense of the Company cause to
be published once, in the New York Times and The Wall Street Journal (national edition), notice that such money remains unclaimed and that, after a date specified therein, which shall not be less than 30 days from the date of such
notification or publication, any unclaimed balance of such money then remaining will be repaid to the Company. 

  
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 Section 8.07. Reinstatement. 

If the Trustee or Paying Agent is unable to apply any United States dollars or non-callable Government Securities in accordance with
Section 8.05 hereof, by reason of any order or judgment of any court or governmental authority enjoining, restraining or otherwise prohibiting such application, then the Company’s obligations under the Indenture and the Notes shall be
revived and reinstated as though no deposit had occurred pursuant to Section 8.02 or 8.03 hereof until such time as the Trustee or Paying Agent is permitted to apply all such money in accordance with Section 8.05 hereof; provided, however,
that, if the Company makes any payment of principal of, premium, if any, or interest on any Note following the reinstatement of its obligations, the Company shall be subrogated to the rights of the Holders of such Notes to receive such payment from
the money held by the Trustee or Paying Agent. 
 Section 8.08. Discharge. 

The Indenture shall be satisfied and discharged (a “Discharge”) and shall cease to be of further effect as to all Notes issued
hereunder, upon the terms and conditions, and subject to the exceptions, set forth in Article Four of the Original Indenture. 
 ARTICLE 9

 AMENDMENT, SUPPLEMENT AND WAIVER 
 Section
9.01. Without Consent of Holders of Notes. 
 Section 901 of the Original Indenture is hereby amended to read in its entirety as
follows with respect to the Notes: 
 “Notwithstanding Section 902 of this Indenture, the Company, the Guarantors and the Trustee
may amend or supplement this Indenture, the Notes or the Subsidiary Guarantees without the consent of any Holder of a Note: 

(i) to cure any ambiguity, defect or inconsistency; 

(ii) to provide for uncertificated Notes in addition to or in place of certificated Notes; 

(iii) to provide for the assumption of the Company’s or a Guarantor’s obligations to the Holders of Notes pursuant to
Article 5 or Section 10.03 of the First Supplemental Indenture; 
 (iv) to make any change that would provide any
additional rights or benefits to the Holders of the Notes or that does not adversely affect the legal rights hereunder of 

  
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any Holder, provided that any change to conform this Indenture to the prospectus of the Company relating to the offering of the Notes shall not be deemed to adversely affect the legal rights
hereunder of any Holder; 
 (v) to secure the Notes or the Subsidiary Guarantees pursuant to the requirements of
Section 4.12 of the First Supplemental Indenture or otherwise; 
 (vi) to provide for the issuance of Additional Notes
in accordance with the limitations set forth in this Indenture; 
 (vii) to add any additional Guarantor with respect to the
Notes or to evidence the release of any Guarantor from its Subsidiary Guarantee in accordance with Article 10 of the First Supplemental Indenture; 

(viii) to comply with requirements of the SEC in order to effect or maintain the qualification of this Indenture under the TIA;

 (ix) to evidence or provide for the acceptance of appointment under this Indenture of a successor Trustee; 

(x) to add to, change or eliminate any of the provisions of this Indenture in respect of one or more series of Securities,
provided that any such addition, change or elimination (A) shall neither (i) apply to any Security of any series created prior to the execution of such supplemental indenture and entitled to the benefit of such provision nor
(ii) modify the rights of the Holder of any such Security with respect to such provision or (B) shall become effective only when there is no such Security Outstanding; or 

(xi) to establish the form or terms of Securities of any series as permitted by Sections 201 and 301. 

Upon the request of the Company accompanied by a resolution of its Board of Directors authorizing the execution of any such amended or
supplemental indenture, and upon receipt by the Trustee of the Opinion of Counsel described in Section 903 hereof, the Trustee shall join with the Company and the Guarantors in the execution of such amended or supplemental indenture authorized
or permitted by the terms of this Indenture and to make any further appropriate agreements and stipulations that may be therein contained, but the Trustee shall not be obligated to enter into such amended or supplemental Indenture that affects its
own rights, duties or immunities under this Indenture or otherwise.” 
 Section 9.02. With Consent of Holders of Notes. 

Section 902 of the Original Indenture is hereby amended to read in its entirety as follows with respect to the Notes: 

“Except as provided above in Section 901 and below in this Section 902, the Company, the Guarantors and the Trustee may amend or
supplement this Indenture, the Notes or the Subsidiary Guarantees may be amended or supplemented with the consent of the Holders of at 

  
 59 

 
least a majority in aggregate principal amount of the Notes then outstanding (including consents obtained in connection with a purchase of, or tender offer or exchange offer for, Notes), and,
subject to Sections 508 and 513 hereof, any existing Default or Event of Default with respect to the Notes or compliance with any provision of this Indenture, the Notes or the Subsidiary Guarantees may be waived with the consent of the Holders of at
least a majority in aggregate principal amount of the then outstanding Notes (including consents obtained in connection with a purchase of, tender offer or exchange offer for Notes). 

Upon the request of the Company accompanied by a resolution of its Board of Directors authorizing the execution of any such amended or
supplemental indenture, and upon the filing with the Trustee of evidence satisfactory to the Trustee of the consent of the Holders of Notes as aforesaid, and upon receipt by the Trustee of the Opinion of Counsel described in Section 903 hereof,
the Trustee shall join with the Company and the Guarantors in the execution of such amended or supplemental indenture unless such amended or supplemental indenture affects the Trustee’s own rights, duties or immunities under this Indenture or
otherwise, in which case the Trustee may in its discretion, but shall not be obligated to, enter into such amended or supplemental indenture. 

It shall not be necessary for the consent of the Holders of Notes under this Section 902 to approve the particular form of any proposed
amendment, supplement or waiver, but it shall be sufficient if such consent approves the substance thereof. 
 After an amendment,
supplement or waiver under this Section becomes effective, the Company shall mail to the Holders of Notes affected thereby a notice briefly describing the amendment, supplement or waiver. Any failure of the Company to mail such notice, or any defect
therein, shall not, however, in any way impair or affect the validity of any such amended or supplemental Indenture or waiver. Subject to Sections 508 and 513 hereof and to the last paragraph of this Section 902, the Holders of a majority in
principal amount of the Notes then outstanding may waive compliance in a particular instance by the Company with any provision of this Indenture or the Notes. However, without the consent of each Holder affected, an amendment, supplement or waiver
may not (with respect to any Notes held by a non-consenting Holder): 
 (a) reduce the principal amount of Notes whose Holders must consent
to an amendment, supplement or waiver; 
 (b) reduce the principal of or change the fixed maturity of any Note or alter any of the provisions
with respect to the redemption or repurchase of the Notes (except as provided in Sections 3.04, 4.10 and 4.15 of the First Supplemental Indenture); 

(c) reduce the rate of or change the time for payment of interest on any Note; 

(d) waive a Default or Event of Default in the payment of principal of or premium, if any, or interest on the Notes (except a rescission of
acceleration of the Notes by the Holders of at least a majority in principal amount of the Notes and a waiver of the payment default that resulted from such acceleration); 

(e) make any Note payable in money other than that stated in the Notes; 

  
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 (f) make any change in the provisions of this Indenture relating to waivers of past Defaults or
Events of Default or the rights of Holders of Notes to receive payments of principal of or premium, if any, or interest on the Notes (except as permitted in clause (g) below); 

(g) waive a redemption or repurchase payment with respect to any Note (other than a payment required by Sections 3.04, 4.10 and 4.15 of the
First Supplemental Indenture); 
 (h) release any Guarantor from any of its obligations under its Subsidiary Guarantee or this Indenture,
except in accordance with the terms of this Indenture; or 
 (i) make any change in the preceding amendment, supplement and waiver
provisions. 
 Section 9.03. Revocation and Effect of Consents. 

A consent to any amendment, supplement or waiver under the Indenture by any Holder given in connection with a purchase, tender or exchange of
such Holder’s Notes shall not be rendered invalid by such purchase, tender or exchange. 
 Until an amendment, supplement or waiver
becomes effective, a consent to it by a Holder of a Note is a continuing consent by the Holder of a Note and every subsequent Holder of a Note or portion of a Note that evidences the same debt as the consenting Holder’s Note, even if notation
of the consent is not made on any Note. However, any such Holder of a Note or subsequent Holder of a Note may revoke the consent as to its Note if the Trustee receives written notice of revocation before the date the waiver, supplement or amendment
becomes effective. An amendment, supplement or waiver becomes effective in accordance with its terms and thereafter binds every Holder. 

The Company may, but shall not be obligated to, fix a record date for the purpose of determining the Holders entitled to consent to any
amendment, supplement or waiver. If a record date is fixed, then notwithstanding the last sentence of the immediately preceding paragraph, those Persons who were Holders at such record date (or their duly designated proxies), and only those Persons,
shall be entitled to consent to such amendment or waiver or revoke any consent previously given, whether or not such Persons continue to be Holders after such record date. No consent shall be valid or effective for more than 90 days after such
record date except to the extent that the requisite number of consents to the amendment, supplement or waiver have been obtained within such 90-day period or as set forth in the next paragraph of this Section 9.03. 

After an amendment, supplement or waiver becomes effective, it shall bind every Holder, unless it makes a change described in any of clauses
(a) through (i) of Section 902 of the Indenture, in which case, the amendment, supplement or waiver shall bind only each Holder of a Note who has consented to it and every subsequent Holder of a Note or portion of a Note that
evidences the same indebtedness as the consenting Holder’s Note. 

  
 61 

 ARTICLE 10 

GUARANTEES OF NOTES 
 The Notes
shall have the benefit of Subsidiary Guarantees. The provisions of Article Thirteen of the Original Indenture shall not apply to the Notes, and in lieu thereof the following provisions of this Article 10 shall apply to the Notes. 

Section 10.01. Subsidiary Guarantees. 

Subject to this Article 10, each of the Guarantors hereby, jointly and severally, unconditionally guarantees to each Holder of a Note
authenticated and delivered by the Trustee and to the Trustee and its successors and assigns, irrespective of the validity and enforceability of this First Supplemental Indenture or the Indenture, the Notes held thereby and the Obligations of the
Company hereunder and thereunder, that: (a) the principal of and premium, if any, and interest on the Notes will be promptly paid in full when due, subject to any applicable grace period, whether at Stated Maturity, by acceleration, upon
repurchase or redemption or otherwise, and interest on the overdue principal of and premium, if any, and (to the extent permitted by law) interest on the Notes, and all other payment Obligations of the Company to the Holders or the Trustee hereunder
or thereunder will be promptly paid in full and performed, all in accordance with the terms hereof and thereof; and (b) in case of any extension of time of payment or renewal of any Notes or any of such other Obligations, the same will be
promptly paid in full when due or performed in accordance with the terms of the extension or renewal, subject to any applicable grace period, whether at Stated Maturity, by acceleration, upon repurchase or redemption or otherwise. Failing payment
when so due of any amount so guaranteed for whatever reason, the Guarantors will be jointly and severally obligated to pay the same immediately. An Event of Default with respect to the Notes under the Indenture shall constitute an event of default
under the Subsidiary Guarantees, and shall entitle the Holders to accelerate the obligations of the Guarantors hereunder in the same manner and to the same extent as the Obligations of the Company. 

The Guarantors hereby agree that their obligations hereunder shall be unconditional, irrespective of the validity, regularity or
enforceability of the Notes or this First Supplemental Indenture or the Indenture, the absence of any action to enforce the same, any waiver or consent by any Holder with respect to any provisions hereof or thereof, the recovery of any judgment
against the Company, any action to enforce the same or any other circumstance (other than complete performance) which might otherwise constitute a legal or equitable discharge or defense of a Guarantor. Each Guarantor further, to the extent
permitted by law, hereby waives diligence, presentment, demand of payment, filing of claims with a court in the event of insolvency or bankruptcy of the Company, any right to require a proceeding first against the Company, protest, notice and all
demands whatsoever and covenants that its Subsidiary Guarantee will not be discharged except by complete performance of the Obligations contained in the Notes and the Indenture. 

If any Holder or the Trustee is required by any court or otherwise to return to the Company, the Guarantors, or any Custodian, Trustee or
other similar official acting in relation to either the Company or the Guarantors, any amount paid by the Company or any Guarantor to the 

  
 62 

 
Trustee or such Holder, the Subsidiary Guarantees, to the extent theretofore discharged, shall be reinstated in full force and effect. Each Guarantor agrees that it shall not be entitled to, and
hereby waives, any right of subrogation in relation to the Holders in respect of any Obligations guaranteed hereby. 
 Each Guarantor
further agrees that, as between the Guarantors, on the one hand, and the Holders and the Trustee, on the other hand, (a) the maturity of the Obligations guaranteed hereby may be accelerated as provided in Article Five of the Original Indenture
for the purposes of its Subsidiary Guarantee, notwithstanding any stay, injunction or other prohibition preventing such acceleration in respect of the Obligations guaranteed thereby, and (b) in the event of any declaration of acceleration of
such Obligations as provided in Article Five of the Original Indenture, such Obligations (whether or not due and payable) shall forthwith become due and payable by the Guarantor for the purpose of its Subsidiary Guarantee. The Guarantors shall have
the right to seek contribution from any non-paying Guarantor so long as the exercise of such right does not impair the rights of the Holders under the Subsidiary Guarantees. 

Section 10.02. Notation of Subsidiary Guarantees. 

The Subsidiary Guarantees shall be evidenced by the execution and delivery of the First Supplemental Indenture or a supplement to the Indenture
and no notation of any Subsidiary Guarantee need be endorsed on any Note, notwithstanding any contrary provision of the Original Indenture. 
 Section
10.03. Guarantors May Consolidate, Etc., on Certain Terms. 
 (a) No Guarantor shall sell or otherwise dispose of all or substantially
all of its properties or assets to, or consolidate with or merge with or into (whether or not such Guarantor is the surviving Person), another Person (other than the Company or another Guarantor), unless, (i) either (1) the Person
acquiring the properties or assets in any such sale or other disposition or the Person formed by or surviving any such consolidation or merger (if other than such Guarantor) unconditionally assumes all the obligations of such Guarantor, pursuant to
a supplemental indenture, substantially in the form of Exhibit B hereto, under the Notes, the Indenture and its Subsidiary Guarantee on terms set forth therein, or (2) the Net Proceeds of such sale or other disposition are applied in
accordance with the provisions of Section 4.10 hereof, and (ii) immediately after giving effect to such transaction, no Default or Event of Default exists. 

(b) In the case of any such consolidation or merger and upon the assumption by the successor Person, by supplemental indenture, executed and
delivered to the Trustee and substantially in the form of Exhibit B hereto, of the Subsidiary Guarantee and the due and punctual performance of all of the covenants of the Indenture to be performed by the Guarantor, such successor Person shall
succeed to and be substituted for the Guarantor with the same effect as if it had been named herein as a Guarantor. 

  
 63 

 Section 10.04. Releases of Subsidiary Guarantees. 

The Subsidiary Guarantee of a Guarantor shall be released: (1) in connection with any sale or other disposition of all or substantially
all of the properties or assets of such Guarantor (including by way of merger or consolidation) to a Person that is not (either before or after giving effect to such transaction) a Subsidiary of the Company, if the sale or other disposition complies
with Section 4.10 hereof; or (2) in connection with any sale or other disposition of all of the Capital Stock of such Guarantor to a Person that is not (either before or after giving effect to such transaction) a Subsidiary of the Company,
if the sale or other disposition complies with Section 4.10 hereof; or (3) if such Guarantor ceases to be a Material Domestic Subsidiary and is not a guarantor of Indebtedness of the Company in excess of $1.0 million; or (4) if the
Company designates any Restricted Subsidiary that is a Guarantor as an Unrestricted Subsidiary in accordance with the applicable provisions of the Indenture; or (5) upon Legal Defeasance or Covenant Defeasance or Discharge in accordance with
Article 8 hereof. 
 Upon delivery by the Company to the Trustee of an Officers’ Certificate to the effect that any of the foregoing
clauses (1) – (5) has occurred, the Trustee shall execute any documents reasonably requested by the Company in order to evidence the release of any Guarantor from its obligations under its Subsidiary Guarantee. Any Guarantor not
released from its obligations under its Subsidiary Guarantee shall remain liable for the full amount of principal of, premium, if any, and interest on the Notes and for the other obligations of such Guarantor under the Indenture as provided in this
Article 10. 
 Section 10.05. Limitation on Guarantor Liability. 

The obligations of each Guarantor under its Subsidiary Guarantee will be limited to the maximum amount as will, after giving effect to all
other contingent and fixed liabilities of such Guarantor and after giving effect to any collections from or payments made by or on behalf of any other Guarantor in respect of the obligations of such other Guarantor under its Subsidiary Guarantee or
pursuant to its contribution obligations under the Indenture, result in the obligations of such Guarantor under its Subsidiary Guarantee not constituting a fraudulent conveyance or fraudulent transfer under federal or state law and not otherwise
being void or voidable under any similar laws affecting the rights of creditors generally. 
 Section 10.06. “Trustee” to Include Paying
Agent. 
 In case at any time any Paying Agent other than the Trustee shall have been appointed by the Company and be then acting
hereunder, the term “Trustee” as used in this Article 10 shall in each case (unless the context shall otherwise require) be construed as extending to and including such Paying Agent within its meaning as fully and for all intents and
purposes as if such Paying Agent were named in this Article 10 in place of the Trustee. 

  
 64 

 ARTICLE 11 

MISCELLANEOUS 
 Section 11.01. First
Supplemental Indenture Controls. 
 To the extent that there is any conflict or inconsistency between the Original Indenture and this
First Supplemental Indenture, the provisions of this First Supplemental Indenture shall control. 
 Section 11.02. No Personal Liability of Directors,
Officers, Employees and Stockholders. 
 No past, present or future director, officer, employee, incorporator or stockholder or other
owner of Capital Stock of the Company or any Guarantor, as such, shall have any liability for any obligations of the Company or any Guarantor under the Notes, the Subsidiary Guarantees or the Indenture or for any claim based on, in respect of, or by
reason of, such obligations or their creation. Each Holder of Notes by accepting a Note waives and releases all such liability. The waiver and release are part of the consideration for issuance of the Notes. 

Section 11.03. Governing Law; Waiver of Jury Trial; Submission to Jurisdiction. 

THIS FIRST SUPPLEMENTAL INDENTURE AND THE NOTES SHALL BE GOVERNED BY, AND CONSTRUED IN ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW YORK. EACH
OF THE PARTIES HERETO, BY ITS ACCEPTANCE THEREOF, HEREBY IRREVOCABLY WAIVES, TO THE FULLEST EXTENT PERMITTED BY APPLICABLE LAW, ANY AND ALL RIGHT TO TRIAL BY JURY IN ANY LEGAL PROCEEDING DIRECTLY OR INDIRECTLY ARISING OUT OF OR RELATING TO THIS
INDENTURE, THE NOTES OR THE TRANSACTION CONTEMPLATED HEREBY OR THEREBY. EACH OF THE COMPANY AND THE TRUSTEE SUBMIT TO THE JURISDICTION OF THE COURTS OF THE STATE OF NEW YORK SITTING IN THE COUNTY OF NEW YORK, AND OF THE UNITED STATES DISTRICT COURT
FOR THE SOUTHERN DISTRICT OF NEW YORK SITTING IN THE BOROUGH OF MANHATTAN, THE CITY OF NEW YORK, IN ANY ACTION OR PROCEEDING TO ENFORCE ANY OF ITS OBLIGATIONS UNDER THIS INDENTURE OR WITH REGARD TO THE NOTES (BUT THE COMPANY AND THE TRUSTEE WILL NOT
BE PREVENTED FROM REMOVING ANY SUCH ACTION OR PROCEEDING FROM A STATE COURT TO THE UNITED STATES DISTRICT COURT FOR THE SOUTHERN DISTRICT OF NEW YORK SITTING IN THE BOROUGH OF MANHATTAN, THE CITY OF NEW YORK). 

Section 11.04. Force Majeure. 
 In
no event shall the Trustee be responsible or liable, nor shall the Company be responsible or liable to the Trustee, for any failure or delay in the performance of its obligations 

  
 65 

 
hereunder arising out of or caused by, directly or indirectly, forces beyond its control, including, without limitation, strikes, work stoppages, accidents, acts of war or terrorism, civil or
military disturbances, and nuclear or natural catastrophes or acts of God; it being understood that the Trustee or the Company, as the case may be, shall use reasonable efforts which are consistent with accepted practices to resume performance
as soon as practicable under the circumstances; provided that the foregoing limitations shall not apply to any obligations of Company or the Guarantors under the Notes. 

Section 11.05. No Adverse Interpretation of Other Agreements. 

The Indenture may not be used to interpret any other indenture, loan or debt agreement of the Company or its Subsidiaries or of any other
Person. Any such indenture, loan or debt agreement may not be used to interpret the Indenture. 
 Section 11.06. Table of Contents and Headings.

 The Table of Contents and headings of the Articles and Sections of this First Supplemental Indenture have been inserted for convenience
of reference only, are not to be considered a part of this First Supplemental Indenture and shall in no way modify or restrict any of the terms or provisions hereof. 

Section 11.07. Counterparts. 
 This First
Supplemental Indenture may be signed in counterparts and by the different parties hereto in separate counterparts, each of which shall constitute an original and all of which together shall constitute one and the same instrument. 

[Signatures on following page] 

  
 66 

 SIGNATURES 

 

			
	WHITING PETROLEUM CORPORATION
		
	By:	 	/s/ James J. Volker
		 	James J. Volker
		 	Chairman and
		 	Chief Executive Officer

  

			
	WHITING OIL AND GAS CORPORATION
		
	By:	 	/s/ James J. Volker
		 	James J. Volker
		 	Chairman and
		 	Chief Executive Officer

  
 [Signature Page to
First Supplemental Indenture] 

 
			
	 THE BANK OF NEW YORK MELLON

TRUST COMPANY, N.A.,
 as
TRUSTEE

		
	By:	 	/s/ Julie Hoffman-Ramos
	Name: Julie Hoffman-Ramos
	Title: Vice President

  
 [Signature Page to
First Supplemental Indenture] 

 EXHIBIT A 

[FORM OF FACE OF NOTE] 
 Unless this
certificate is presented by an authorized representative of The Depository Trust Company, a New York corporation (“DTC”), to the issuer or its agent for registration of transfer, exchange or payment, and any certificate issued is
registered in the name of Cede & Co. or such other name as is requested by an authorized representative of DTC (and any payment is made to Cede & Co. or to such other entity as is requested by an authorized representative of DTC),
ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL since the registered owner hereof, Cede & Co., has an interest herein. 

THIS SECURITY IS A GLOBAL SECURITY AS REFERRED TO IN THE INDENTURE HEREINAFTER REFERENCED. UNLESS AND UNTIL IT IS EXCHANGED IN WHOLE OR IN
PART FOR THE INDIVIDUAL SECURITIES REPRESENTED HEREBY, THIS GLOBAL SECURITY MAY NOT BE TRANSFERRED EXCEPT AS A WHOLE BY THE DEPOSITARY TO A NOMINEE OF THE DEPOSITARY OR BY A NOMINEE OF THE DEPOSITARY TO THE DEPOSITARY OR ANOTHER NOMINEE OF THE
DEPOSITARY OR BY THE DEPOSITARY OR ANY SUCH NOMINEE TO A SUCCESSOR DEPOSITARY OR A NOMINEE OF SUCH SUCCESSOR DEPOSITARY. 
 WHITING
PETROLEUM CORPORATION 
  

			
	No.       	  	$                    
		  	CUSIP No. 966387 AG7
		  	ISIN No. US966387AG72

 5.000% Senior Note due 2019 

Whiting Petroleum Corporation, a Delaware corporation, promises to pay to
                    , or registered assigns, the principal sum of
                     Dollars on March 15, 2019 [or such greater or lesser amount as may be indicated on Schedule A hereto].1 
 Interest Payment Dates: March 15 and September 15. 

Record Dates: March 1 and September 1. 

Additional provisions of this Note are set forth on the other side of this Note. 

 
  

	1 	If this Note is a Global Security, add this provision. 

  
 A-1 

									
	ATTEST:	  		 	WHITING PETROLEUM CORPORATION
					
	By:	  	 	  		 	By:	  	 
	Name:	  		 	Name:
	Title:	  		 	Title:

  

			
	 TRUSTEE’S CERTIFICATE OF

AUTHENTICATION

	
	 This is one of the Securities of the

series designated therein referred to in the
 within-mentioned
Indenture.

	
	 THE BANK OF NEW YORK MELLON
 TRUST
COMPANY, N.A., As Trustee

		
	By	 	 
		 	Authorized Officer

 Dated: 

  
 A-2 

 [FORM OF REVERSE SIDE OF NOTE] 

5.000% Senior Note due 2019 

Capitalized terms used herein but not defined shall have the meanings assigned to them in the Indenture referred to below unless otherwise
indicated. 
 1. Interest. Whiting Petroleum Corporation, a Delaware corporation (the “Company”), promises to pay interest
on the principal amount of this Note at 5.000% per annum from                          until maturity. The Company
will pay interest semi-annually in arrears on March 15 and September 15 of each year, commencing March 15, 2014, or if any such day is not a Business Day, on the next succeeding Business Day (each an “Interest Payment
Date”). Interest on the Notes will accrue from the most recent date to which interest has been paid or, if no interest has been paid, from the date of original issuance; provided that if there is no existing Default or Event of Default in the
payment of interest, and if this Note is authenticated between a record date referred to on the face hereof and the next succeeding Interest Payment Date, interest shall accrue from such next succeeding Interest Payment Date, except in the case of
the original issuance of Notes, in which case interest shall accrue from the date of authentication. The Company shall pay interest (including post-petition interest in any proceeding under any Bankruptcy Law) on overdue principal and premium, if
any, from time to time on demand at a rate that is the rate then in effect; it shall pay interest (including post-petition interest in any proceeding under any Bankruptcy Law) on overdue installments of interest (without regard to any applicable
grace periods) from time to time on demand at the same rate to the extent lawful. Interest will be computed on the basis of a 360-day year of twelve 30-day months. 

2. Method of Payment. The Company will pay interest on the Notes to the Persons who are registered Holders of Notes at the close of
business on the March 1 or September 1 next preceding the Interest Payment Date, even if such Notes are cancelled after such record date and on or before such Interest Payment Date, except as provided in Section 307 of the Indenture
with respect to Defaulted Interest. Holders must surrender Notes to the Paying Agent to collect payments of principal and premium, if any, together with accrued and unpaid interest due at maturity. The Notes will be payable as to principal, premium,
if any, and interest at the office or agency of the Company maintained for such purpose within the City and State of New York, or, at the option of the Company, payment of interest may be made by check mailed to the Holders at their addresses set
forth in the Security Register of Holders, and provided that payment by wire transfer of immediately available funds will be required with respect to any amounts due on all Global Securities and all other Notes the Holders of which shall have
provided wire transfer instructions to the Company or the Paying Agent. Such payment shall be in such coin or currency of the United States of America as at the time of payment is legal tender for payment of public and private debts. 

3. Paying Agent and Registrar. Initially, The Bank of New York Mellon Trust Company, N.A., the Trustee under the Indenture, will act as
Paying Agent and Security Registrar. The Company may change any Paying Agent or Security Registrar without notice to any Holder. The Company or any of its Domestic Subsidiaries may act in any such capacity. 

4. Indenture. This Note is one of a duly authorized issue of the series of Securities of the Company designated as its 5.000% Senior
Notes due 2019 (the “Notes”), issued under a Senior Indenture, dated as of September 12, 2013 (“Original Indenture”), among the Company, the Guarantors and the Trustee, as supplemented and amended by the First Supplemental

  
 A-3 

 
Indenture (herein so called), dated as of September 12, 2013 (the Original Indenture, as so supplemented and amended, being called herein the “Indenture”). Capitalized terms herein
are used as defined in the Indenture unless otherwise indicated. The terms of the Notes include those stated in the Indenture and those made part of the Indenture by reference to the Trust Indenture Act of 1939, as amended (15 U.S. Code §§
77aaa-77bbbb). The Notes are subject to all such terms, and Holders are referred to the Indenture and such Act for a statement of such terms. The Notes are unsecured senior obligations of the Company limited to $1,100,000,000 aggregate principal
amount in the case of Notes issued on the Issue Date. The Company may, subject to Sections 2.05 and 4.09 of the First Supplemental Indenture, issue Additional Notes under the Indenture after the Issue Date in either a limited or an unlimited
aggregate principal amount. Any Additional Notes so issued and the Initial Notes shall be treated as a single class under the Indenture. 

5. Optional Redemption. 

(a) Except as set forth in subparagraph (b) of this Paragraph 5 or in Section 4.15 of the First Supplemental Indenture, the Company
shall not have the option to redeem the Notes prior to December 15, 2018. On and after December 15, 2018, the Company may on any one or more occasions redeem the Notes, in whole or in part, at a Redemption Price equal to 100% of the
principal amount thereof, plus accrued and unpaid interest, if any, to the Redemption Date (subject to the right of Holders of record on the relevant record date to receive interest due on an Interest Payment Date that is on or prior to the
Redemption Date). 
 (b) Notwithstanding the provisions of subparagraph (a) of this Paragraph 5, at any time prior to December 15,
2018, the Company may on any one or more occasions redeem the Notes, in whole or in part, at the Redemption Price of 100% of the principal amount thereof plus the Applicable Premium as of, plus accrued and unpaid interest, if any, to, the Redemption
Date (subject to the right of Holders of record on the relevant record date to receive interest due on an Interest Payment Date that is on or prior to the Redemption Date). 

6. Mandatory Redemption. 

Except as set forth in paragraph 7 below, the Company shall not be required to make mandatory redemption or sinking fund payments with respect
to the Notes or to repurchase the Notes at the option of the Holders. 

  
 A-4 

 7. Repurchase at Option of Holder. 

(a) Within 30 days following the occurrence of a Change of Control, the Company shall make an offer (a “Change of Control Offer”) to
repurchase all or any part (equal to $2,000 or any integral $1,000 multiple in excess thereof) of each Holder’s Notes at a purchase price equal to 101% of the aggregate principal amount of Notes repurchased, plus accrued and unpaid interest, if
any, to the date of settlement (the “Change of Control Settlement Date”), subject to the right of Holders of record on the relevant record date to receive interest due on an Interest Payment Date that is on or prior to the Change of
Control Settlement Date. Within 30 days following a Change of Control, the Company shall mail a notice of the Change of Control Offer to each Holder and the Trustee describing the transaction that constitutes the Change of Control and setting forth
the procedures governing the Change of Control Offer as required by Section 4.15 of the First Supplemental Indenture. 
 (b) On the
361st day after an Asset Sale, if the aggregate amount of Excess Proceeds then exceeds $50.0 million, the Company shall commence an offer to all Holders of Notes (an “Asset Sale Offer”) pursuant to Section 3.04 of the First
Supplemental Indenture, and to all holders of any Pari Passu Indebtedness then outstanding, to purchase the maximum principal amount of Notes and such Pari Passu Indebtedness that may be purchased out of the Excess Proceeds, at an offer price in
cash in an amount equal to 100% of the principal amount of the Notes plus accrued and unpaid interest, if any, thereon to Settlement Date, subject to the right of Holders of record on the relevant record date to receive interest due on an Interest
Payment Date that is on or prior to the Settlement Date, in accordance with the procedures set forth in the Indenture. If any Excess Proceeds remain after consummation of an Asset Sale Offer, the Company may use such remaining Excess Proceeds for
any purpose not otherwise prohibited by the Indenture. If the aggregate principal amount of Notes surrendered by Holders thereof and Pari Passu Indebtedness surrendered by holders or lenders, collectively, exceeds the amount of Excess Proceeds, the
Trustee shall select the Notes and Pari Passu Indebtedness to be purchased on a pro rata basis (with such adjustments as may be deemed appropriate by the Trustee so that only Notes in denominations of $2,000, or integral $1,000 multiples in excess
thereof, shall be purchased) on the basis of the aggregate principal amount of tendered Notes and Pari Passu Indebtedness. Holders of Notes that are the subject of an offer to purchase will receive an Asset Sale Offer from the Company prior to any
related purchase date and may elect to have such Notes purchased by completing the form entitled “Option of Holder to Elect Purchase” on the reverse of the Notes. 

8. Notice of Redemption. Notice of redemption will be mailed at least 30 days but not more than 60 days (except as otherwise provided
in the Indenture if the notice is issued in connection with a Covenant Defeasance, Legal Defeasance or Discharge) before the Redemption Date to each Holder whose Notes are to be redeemed at its registered address. Notes in denominations larger than
$2,000 may be redeemed in part but only in whole multiples of $1,000, unless all of the Notes held by a Holder are to be redeemed. On and after the Redemption Date interest ceases to accrue on Notes or portions thereof called for redemption. 

9. Denominations, Transfer, Exchange. The Notes are in registered form without coupons in denominations of $2,000 and any integral
multiple of $1,000 in excess thereof. The transfer of Notes may be registered and Notes may be exchanged as provided in the Indenture. The Company or the Trustee may require a Holder, among other things, to furnish appropriate endorsements and
transfer documents, and may require a Holder to pay any taxes due on transfer 

  
 A-5 

 
or exchange. The Company need not exchange or register the transfer of any Note or portion of a Note selected for redemption, except for the unredeemed portion of any Note being redeemed in part.
Also, it need not exchange or register the transfer of any Notes for a period of 15 days before the day of the mailing of a notice of redemption of Notes selected for redemption. 

10. Persons Deemed Owners. The registered Holder of a Note may be treated as its owner for all purposes. 

11. Amendment, Supplement and Waiver. Subject to certain exceptions, the Indenture, the Notes or the Subsidiary Guarantees may be
amended or supplemented with the consent of the Holders of at least a majority in aggregate principal amount of the then outstanding Notes, and any existing default or compliance with any provision of the Indenture, the Notes or the Subsidiary
Guarantees may be waived with the consent of the Holders of at least a majority in aggregate principal amount of the then outstanding Notes. Without the consent of any Holder of a Note, the Indenture, the Notes or the Subsidiary Guarantees may be
amended or supplemented to cure any ambiguity, defect or inconsistency, to provide for uncertificated Notes in addition to or in place of certificated Notes, to provide for the assumption of the Company’s or a Guarantor’s obligations to
Holders of the Notes pursuant to Article 5 of the First Supplemental Indenture, to make any change that would provide any additional rights or benefits to the Holders of the Notes or that does not adversely affect the legal rights under the
Indenture of any such Holder, provided that any change to conform the Indenture to the Company’s prospectus relating to the offering of the Notes shall not be deemed to adversely affect the legal rights under the Indenture of any Holder, to
secure the Notes or the Subsidiary Guarantees pursuant to Section 4.12 of the First Supplemental Indenture or otherwise, to provide for the issuance of Additional Notes in accordance with the limitations set forth in the Indenture, to add any
additional Guarantor with respect to the Notes or to evidence the release of any Guarantor from its Subsidiary Guarantee, in each case as provided in the Indenture, to comply with the requirements of the SEC in order to effect or maintain the
qualification of the Indenture under the Trust Indenture Act, to evidence or provide for the acceptance of appointment under the Indenture of a successor Trustee, to add to, change or eliminate any provisions of the Indenture in respect of one or
more other series of Securities or to establish the forms or terms of Securities of any other series as permitted by the Indenture. 
 12.
Defaults and Remedies. Events of Default with respect to the Notes include: (i) default for 30 days in the payment when due of interest on the Notes; (ii) default in payment when due of the principal of or premium, if any, on the
Notes when due at Stated Maturity, upon optional redemption, upon required repurchase, upon declaration or otherwise; (iii) failure by the Company to comply with Section 4.07, 4.09, 4.10, 4.15 or 5.01 of the First Supplemental Indenture;
(iv) failure by the Company or a Guarantor for 60 days (or 180 days in the case of Reporting Failure) after notice to comply with any of its other agreements in the Indenture or the Notes; (v) default under any mortgage, indenture or
instrument under which there may be issued or by which there may be secured or evidenced any Indebtedness for money borrowed by the Company or any of its Restricted Subsidiaries (or the payment of which is guaranteed by the Company or any of its
Restricted Subsidiaries), whether such Indebtedness or guarantee now exists or is created after the Issue Date, if such default (a) is caused by a failure to pay principal of, or premium or interest, if any, on such Indebtedness prior to the
expiration of any grace period provided in such Indebtedness (a “Payment Default”) or (b) results in the acceleration of such Indebtedness prior to its Stated Maturity and, in each case, the principal amount of any such Indebtedness,
together with the principal amount of any other such Indebtedness under which 

  
 A-6 

 
there has been a Payment Default or the maturity of which has been so accelerated, aggregates $50.0 million or more; provided, that if any such default is cured or waived or any such acceleration
is rescinded, or such Indebtedness is repaid, within a period of 10 days from the continuation of such default beyond the applicable grace period or the occurrence of such acceleration, as the case may be, such Event of Default under the Indenture
and any consequential acceleration of the Notes shall be automatically rescinded; (vi) failure by the Company or any of its Significant Subsidiaries to pay final judgments aggregating in excess of $50.0 million, which judgments are not paid,
discharged or stayed (including a stay pending appeal) for a period of 60 days after the date of such final judgment (or, if later, the date when payment is due pursuant to such judgment); (vii) except as permitted by the Indenture, any
Subsidiary Guarantee is held in any judicial proceeding to be unenforceable or invalid or ceases for any reason to be in full force and effect or any Guarantor, or any Person acting on behalf of any Guarantor, denies or disaffirms its obligations
under its Subsidiary Guarantee (other than by reason of release of a Guarantor from its Subsidiary Guarantee in accordance with the terms of the Indenture); and (viii) certain events of bankruptcy, insolvency or reorganization with respect to
the Company, any Significant Subsidiary or any group of Subsidiaries that, taken together, would constitute a Significant Subsidiary as specified in Section 501(8) or 501(9) of the Indenture. If any Event of Default occurs and is continuing,
the Trustee, by notice to the Company, or the Holders of at least 25% in aggregate principal amount of the then outstanding Notes, by notice to the Company and the Trustee, may declare all the Notes to be due and payable immediately. Notwithstanding
the preceding, in the case of an Event of Default arising from certain events of bankruptcy, insolvency or reorganization with respect to the Company, any Significant Subsidiary or any group of Subsidiaries that, taken together, would constitute a
Significant Subsidiary described in Section 501(8) or 501(9) of the Original Indenture (as amended by Section 6.01 of the First Supplemental Indenture), all outstanding Notes will become due and payable without further action or notice.
Holders may not enforce the Indenture or the Notes except as provided in the Indenture. Subject to certain limitations, Holders of a majority in principal amount of the then outstanding Notes may direct the Trustee in its exercise of any trust or
power conferred on it. The Trustee may withhold from Holders of the Notes notice of any continuing Default or Event of Default with respect to the Notes (except a Default or Event of Default relating to the payment of principal, premium, if any, or
interest) if it determines that withholding notice is in their interest. The Holders of a majority in principal amount of the Notes then outstanding by notice to the Trustee may on behalf of the Holders of all of the Notes waive any past Default or
Event of Default with respect to the Notes and its consequences under the Indenture except a continuing Default or Event of Default in the payment of the principal of or premium, if any, or interest on the Notes. The Company is required to deliver
to the Trustee annually a statement regarding compliance with the Indenture, and, so long as any Notes are outstanding, the Company is required upon becoming aware of any Default or Event of Default with respect to the Notes, to deliver to the
Trustee a statement specifying such Default or Event of Default. 
 13. Defeasance and Discharge. The Notes are subject to defeasance
and discharge upon the terms and conditions specified in the Indenture. 
 14. No Recourse Against Others. No past, present or future
director, officer, employee, incorporator, member, partner or stockholder or other owner of Capital Stock of the Company or any Guarantor, as such, shall have any liability for any obligations of the Company or any Guarantor under the Notes, the
Subsidiary Guarantees or the Indenture or for any claim based on, in respect of, or by reason of, such obligations or their creation. Each Holder by accepting a Note waives and releases all such liability. The waiver and release are part of the
consideration for the issuance of the Notes. 

  
 A-7 

 15. Authentication. This Note shall not be valid until authenticated by the manual
signature of an authorized signatory of the Trustee or an authenticating agent. 
 16. Abbreviations. Customary abbreviations may be
used in the name of a Holder or an assignee, such as: TEN COM (= tenants in common), TEN ENT (= tenants by the entireties), JT TEN (= joint tenants with right of survivorship and not as tenants in common), CUST (= Custodian), and U/G/M/A (= Uniform
Gifts to Minors Act). 
 17. CUSIP Numbers. Pursuant to a recommendation promulgated by the Committee on Uniform Security
Identification Procedures, the Company has caused CUSIP numbers to be printed on the Notes and the Trustee may use CUSIP numbers and corresponding ISIN numbers in notices of redemption as a convenience to Holders. No representation is made as to the
accuracy of such numbers either as printed on the Notes or as contained in any notice of redemption and reliance may be placed only on the other identification numbers placed thereon. 

18. Governing Law. THE INDENTURE AND THIS NOTE SHALL BE GOVERNED BY, AND CONSTRUED IN ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW
YORK. 
 19. Successor Entity. In the event a successor assumes all the obligations of the Company under the Notes and the Indenture,
pursuant to the terms thereof, the Company will be released from all such obligations. 
 The Company will furnish to any Holder upon
written request and without charge a copy of the Indenture. Requests may be made to: 
 Whiting Petroleum Corporation 

1700 Broadway, Suite 2300 

Denver, Colorado 80290-2300 

Attention: Chief Financial Officer 

  
 A-8 

 ASSIGNMENT FORM 

To assign this Note, fill in the form below: 

I or we assign and transfer this Note to 
  

 
 Print or type assignee’s name,
address and zip code) 
  
  

(Insert assignee’s soc. sec. or tax I.D. No.) 

and irrevocably appoint
                                        
agent to transfer this Note on the books of the Company. The agent may substitute another to act for him. 
  

									
	Date:	  	 	  		 	Your Signature:	  	 
		  		  		 	                                Sign exactly 
as your name appears on the other side of this Note.

  
 A-9 

 OPTION OF HOLDER TO ELECT PURCHASE 

If you want to elect to have this Note purchased by the Company pursuant to Section 4.10 or 4.15 of the First Supplemental Indenture,
check the box below: 
  

 ̈ 

If you want to elect to have only part of this Note purchased by the Company pursuant to Section 4.10 or Section 4.15 of the First
Supplemental Indenture, state the amount (in minimum denomination of equal to $2,000 or any integral $1,000 multiple in excess thereof) you elected to have purchased:
$                         
  

									
	Date:	  	 	  		 	Your Signature:	  	 
		  		  		 	                                (Sign exactly 
as your name appears on the other side of this Note)

  

					
		  	Soc. Sec. or Tax Identification No.:	 	 
		  		 	

  

					
	Signature Guarantee:	  	 	  	
		  	(Signature must be guaranteed)	  	

 Signatures must be guaranteed by an “eligible guarantor institution” meeting the requirements of the
Registrar, which requirements include membership or participation in the Security Transfer Agent Medallion Program (“STAMP”) or such other “signature guarantee program” as may be determined by the Registrar in addition to, or in
substitution for, STAMP, all in accordance with the Securities Exchange Act of 1934, as amended. 

  
 A-10 

 [TO BE ATTACHED TO GLOBAL SECURITY] 

SCHEDULE OF INCREASES OR DECREASES IN GLOBAL SECURITY 

The following increases or decreases in this Global Security have been made: 
  

									
	 Date
	 	Amount of
decrease in
Principal
Amount of this
Global Security	 	Amount of
increase in
Principal
Amount of this
Global Security	 	Principal
Amount of this
Global Security
following such
decrease or
increase	 	Signature of
authorized
officer
of Trustee
		 		 		 		 	
		 		 		 		 	

  
 A-11 

 EXHIBIT B 
  

 
  

WHITING PETROLEUM CORPORATION 

And 
 the Guarantors named herein

  
  

5.000% SENIOR NOTES DUE 2019 
  

 
 FORM OF
SUPPLEMENTAL INDENTURE AND AMENDMENT — SUBSIDIARY GUARANTEE 
 DATED AS OF
                             ,          

 
  

THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A., 

Trustee 
  

 
  

 
  

  
 B-1 

 This SUPPLEMENTAL INDENTURE, dated as of
                             ,          is among
Whiting Petroleum Corporation, a Delaware corporation (the “Company”), each of the parties identified under the caption “Guarantors” on the signature page hereto (the “Guarantors”) and The Bank of New York Mellon Trust
Company, N.A., a national banking association, as Trustee. 
 RECITALS 

WHEREAS, the Company, the initial Guarantors and the Trustee entered into a Senior Indenture, dated as of September 12, 2013 (the
“Original Indenture”), as supplemented and amended by the First Supplemental Indenture (herein so called) thereto, dated as of September 12, 2013 (the Original Indenture as so supplemented and amended being called herein the
“Indenture”), pursuant to which the Company has issued $1,100,000,000 in principal amount of 5.000% Senior Notes due 2019 (the “Notes”); and 

WHEREAS, Section 901(vii) of the Original Indenture provides that the Company, the Guarantors and the Trustee may amend or supplement the
Indenture in order to add Guarantors with respect to the Notes, without the consent of the Holders of the Notes; and 
 WHEREAS, all acts
and things prescribed by the Indenture, by law and by the Certificate of Incorporation and the Bylaws (or comparable constituent documents) of the Company, of the Guarantors and of the Trustee necessary to make this Supplemental Indenture a valid
instrument legally binding on the Company, the Guarantors and the Trustee, in accordance with its terms, have been duly done and performed; 

NOW, THEREFORE, to comply with the provisions of the Indenture and in consideration of the above premises, the Company, the Guarantors and the
Trustee covenant and agree for the equal and proportionate benefit of the respective Holders of the Notes as follows: 
 ARTICLE 1 

Section 1.01. This Supplemental Indenture is supplemental to the Indenture and does and shall be deemed to form a part of, and shall be
construed in connection with and as part of, the Indenture for any and all purposes. 
 Section 1.02. This Supplemental Indenture shall
become effective immediately upon its execution and delivery by each of the Company, the Guarantors and the Trustee. 
 ARTICLE 2 

From this date, by executing this Supplemental Indenture, the Guarantors whose signatures appear below shall be Guarantors with respect to the
Notes on terms contemplated by and subject to the provisions of Article 10 of the Indenture. 
 ARTICLE 3 

Section 3.01. Except as specifically modified herein, the Indenture and the Notes are in all respects ratified and confirmed (mutatis
mutandis) and shall remain in full force and effect in accordance with their terms with all capitalized terms used herein without definition having the same respective meanings ascribed to them as in the Indenture. 

  
 B-2 

 Section 3.02. Except as otherwise expressly provided herein, no duties, responsibilities or
liabilities are assumed, or shall be construed to be assumed, by the Trustee by reason of this Supplemental Indenture. This Supplemental Indenture is executed and accepted by the Trustee subject to all the terms and conditions set forth in the
Indenture with the same force and effect as if those terms and conditions were repeated at length herein and made applicable to the Trustee with respect hereto. 

Section 3.03. THIS SUPPLEMENTAL INDENTURE SHALL BE GOVERNED BY, AND CONSTRUED IN ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW YORK. 

Section 3.04. The parties may sign any number of copies of this Supplemental Indenture. Each signed copy shall be an original, but all of
such executed copies together shall represent the same agreement. 
 [NEXT PAGE IS SIGNATURE PAGE] 

  
 B-3 

 IN WITNESS WHEREOF, the parties hereto have caused this Supplemental Indenture to be duly
executed, all as of the date first written above. 
  

			
	WHITING PETROLEUM CORPORATION
		
	By	 	 
		 	 Name:
 Title:

  

			
	 GUARANTORS

[                          
              ]

		
	By	 	 
		 	 Name:
 Title:

  

			
	 THE BANK OF NEW YORK MELLON
 TRUST
COMPANY, N.A., as Trustee

		
	By	 	 

  
 B-4EX-4.3

 Exhibit 4.3 

Execution Version 
  

 
  

 
  

WHITING PETROLEUM CORPORATION, 

THE GUARANTOR NAMED ON THE SIGNATURE PAGE HEREOF 

and 
 THE BANK OF NEW YORK MELLON
TRUST COMPANY, N.A., 
 As Trustee 

SECOND SUPPLEMENTAL INDENTURE 

dated as of September 12, 2013 

to 
 SENIOR INDENTURE 

dated as of September 12, 2013 

Providing for Issuance of 
 5.750%
SENIOR NOTES DUE 2021 
  
  
  

 
  

 TABLE OF CONTENTS 

 

							
	 	 	 	  	Page	 
	ARTICLE 1 DEFINITIONS AND INCORPORATION BY REFERENCE	  			
	 Section 1.01.
	 	Definitions.	  	 	2	  
	 Section 1.02.
	 	Other Definitions.	  	 	25	  
	 Section 1.03.
	 	Rules of Construction.	  	 	26	  
	ARTICLE 2 THE NOTES	  			
	 Section 2.01.
	 	Creation and Form.	  	 	26	  
	 Section 2.02.
	 	Execution and Authentication.	  	 	26	  
	 Section 2.03.
	 	Outstanding Notes.	  	 	27	  
	 Section 2.04.
	 	CUSIP Numbers.	  	 	27	  
	 Section 2.05.
	 	Issuance of Additional Notes.	  	 	27	  
	ARTICLE 3 REDEMPTION AND PURCHASE	  			
	 Section 3.01.
	 	Redemption and Purchase.	  	 	28	  
	 Section 3.02.
	 	Optional Redemption.	  	 	28	  
	 Section 3.03.
	 	Mandatory Redemption.	  	 	28	  
	 Section 3.04.
	 	Offer to Purchase by Application of Excess Proceeds.	  	 	28	  
	ARTICLE 4 COVENANTS	  			
	 Section 4.01.
	 	Payment of Notes	  	 	30	  
	 Section 4.02.
	 	Maintenance of Office or Agency	  	 	30	  
	 Section 4.03.
	 	Reports	  	 	31	  
	 Section 4.04.
	 	Compliance Certificate	  	 	32	  
	 Section 4.05.
	 	Taxes	  	 	32	  
	 Section 4.06.
	 	Stay, Extension and Usury Laws	  	 	32	  
	 Section 4.07.
	 	Limitation on Restricted Payments	  	 	33	  
	 Section 4.08.
	 	Limitation on Dividend and Other Payment Restrictions Affecting Subsidiaries	  	 	36	  
	 Section 4.09.
	 	Limitation on Incurrence of Indebtedness and Issuance of Preferred Stock	  	 	38	  
	 Section 4.10.
	 	Limitation on Asset Sales.	  	 	41	  
	 Section 4.11.
	 	Limitation on Transactions with Affiliates	  	 	42	  
	 Section 4.12.
	 	Limitation on Liens	  	 	44	  
	 Section 4.13.
	 	Additional Subsidiary Guarantees	  	 	44	  
	 Section 4.14.
	 	Corporate Existence	  	 	45	  
	 Section 4.15.
	 	Offer to Repurchase Upon Change of Control	  	 	45	  
	 Section 4.16.
	 	No Inducements	  	 	48	  
	 Section 4.17.
	 	Designation of Restricted and Unrestricted Subsidiaries.	  	 	48	  
	 Section 4.18.
	 	Covenant Termination.	  	 	48	  
	ARTICLE 5 SUCCESSORS	  			
	 Section 5.01.
	 	Merger, Consolidation, or Sale of Assets	  	 	49	  
	 Section 5.02.
	 	Successor Entity Substituted	  	 	50	  
	ARTICLE 6 DEFAULTS AND REMEDIES	  			
	 Section 6.01.
	 	Events of Default	  	 	50	  
	 Section 6.02.
	 	Acceleration	  	 	52	  

  
 i 

							
	 Section 6.03.
	 	[Intentionally Omitted.]	  	 	52	  
	 Section 6.04.
	 	Waiver of Usury, Stay or Extension of Laws	  	 	52	  
	ARTICLE 7 TRUSTEE; REPORTS	  			
	 Section 7.01.
	 	Notice of Defaults	  	 	53	  
	 Section 7.02.
	 	[Intentionally Omitted.]	  	 	53	  
	 Section 7.03.
	 	Compensation and Reimbursement.	  	 	53	  
	 Section 7.04.
	 	Reports by Company and Subsidiary Guarantors	  	 	54	  
	ARTICLE 8 LEGAL DEFEASANCE AND COVENANT DEFEASANCE	  			
	 Section 8.01.
	 	Option to Effect Legal Defeasance or Covenant Defeasance	  	 	54	  
	 Section 8.02.
	 	Legal Defeasance and Discharge	  	 	54	  
	 Section 8.03.
	 	Covenant Defeasance	  	 	55	  
	 Section 8.04.
	 	Conditions to Legal or Covenant Defeasance	  	 	55	  
	 Section 8.05.
	 	Deposited Money and Government Securities to be Held in Trust; Other Miscellaneous Provisions	  	 	57	  
	 Section 8.06.
	 	Repayment to Company	  	 	57	  
	 Section 8.07.
	 	Reinstatement	  	 	58	  
	 Section 8.08.
	 	Discharge.	  	 	58	  
	ARTICLE 9 AMENDMENT, SUPPLEMENT AND WAIVER	  			
	 Section 9.01.
	 	Without Consent of Holders of Notes	  	 	58	  
	 Section 9.02.
	 	With Consent of Holders of Notes	  	 	59	  
	 Section 9.03.
	 	Revocation and Effect of Consents	  	 	61	  
	ARTICLE 10 GUARANTEES OF NOTES	  			
	 Section 10.01.
	 	Subsidiary Guarantees	  	 	62	  
	 Section 10.02.
	 	Notation of Subsidiary Guarantees	  	 	63	  
	 Section 10.03.
	 	Guarantors May Consolidate, Etc., on Certain Terms	  	 	63	  
	 Section 10.04.
	 	Releases of Subsidiary Guarantees	  	 	64	  
	 Section 10.05.
	 	Limitation on Guarantor Liability	  	 	64	  
	 Section 10.06.
	 	“Trustee” to Include Paying Agent	  	 	64	  
	ARTICLE 11 MISCELLANEOUS	  			
	 Section 11.01.
	 	Second Supplemental Indenture Controls	  	 	65	  
	 Section 11.02.
	 	No Personal Liability of Directors, Officers, Employees and Stockholders	  	 	65	  
	 Section 11.03.
	 	Governing Law; Waiver of Jury Trial; Submission to Jurisdiction	  	 	65	  
	 Section 11.04.
	 	Force Majeure.	  	 	65	  
	 Section 11.05.
	 	No Adverse Interpretation of Other Agreements	  	 	66	  
	 Section 11.06.
	 	Table of Contents and Headings.	  	 	66	  
	 Section 11.07.
	 	Counterparts	  	 	66	  

  
 ii 

 EXHIBITS 
  

							
	 EXHIBIT A
	 	 Form of Note
	  	 	A-1	  
	 EXHIBIT B
	 	 Form of Supplemental Indenture
	  	 	B-1	  

  
 iii 

 This Second Supplemental Indenture, dated as of September 12, 2013 (this “Second
Supplemental Indenture”), supplements and amends the Senior Indenture, dated as of September 12, 2013 (the “Original Indenture”), among Whiting Petroleum Corporation, a Delaware corporation (the “Company”), the
Guarantor listed on the signature page hereof and The Bank of New York Mellon Trust Company, N.A., a national banking association, as trustee (the “Trustee”). 

RECITATIONS OF THE COMPANY 

WHEREAS, the Company, the Guarantors and the Trustee have heretofore executed and delivered the Original Indenture to provide for the issuance
of the Company’s senior debt securities to be issued in one or more series; 
 WHEREAS, Section 901 of the Original Indenture
provides, among other things, that the Company, the Guarantors and the Trustee may without the consent of Holders enter into indentures supplemental to the Original Indenture to, among other things, (a) add to, change or eliminate any of the
provisions of the Original Indenture in respect of one or more series of Securities, provided that any such addition, change or elimination (i) shall neither (A) apply to any Security of any series created prior to the execution of such
supplemental indenture and entitled to the benefit of such provision nor (B) modify the rights of the Holder of any such Security with respect to such provision or (ii) shall become effective only when there is no such Security Outstanding
and (b) establish the form or terms of Securities of any series as permitted by Sections 201 and 301; 
 WHEREAS, on
September 12, 2013 the Company issued pursuant to the Original Indenture, as supplemented and amended by the First Supplemental Indenture dated as of September 12, 2013 among the Company, the Guarantor and the Trustee, a series of
Securities designated as the “5.000% Senior Notes due 2019”; 
 WHEREAS, the Company desires to provide for the issuance of a
series of Securities to be designated as the “5.750% Senior Notes due 2021” (the “Notes”), and to set forth the form and terms thereof; 

WHEREAS, the Company proposes in and by this Second Supplemental Indenture to supplement and amend the Original Indenture, but only insofar as
it will apply to the Notes; and 
 WHEREAS, all action on the part of the Company necessary to authorize the creation and issuance of the
Notes, and all action on the part of Whiting necessary to authorize its guarantee of the Notes under the Original Indenture and this Second Supplemental Indenture (the Original Indenture, as supplemented and amended by this Second Supplemental
Indenture, being hereinafter called the “Indenture”), have been duly taken. 
 NOW, THEREFORE, THIS SECOND SUPPLEMENTAL
INDENTURE WITNESSETH: 
 That, in order to establish the designation, form and terms of, and to authorize the authentication and
delivery of the Notes, and in consideration of the acceptance of the Notes by the Holders thereof and of other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the parties hereto hereby agree as follows:

  
 1 

 ARTICLE 1 

DEFINITIONS AND INCORPORATION 
 BY
REFERENCE 
 Section 1.01. Definitions. 

(a) Capitalized terms used herein and not otherwise defined shall have the respective meanings assigned thereto in the Original Indenture. 

(b) Section 101 of the Original Indenture is amended and supplemented, with respect to the Notes, by inserting or restating, as the case
may be, in their appropriate alphabetical position, the following definitions: 
 “ACNTA” means (without duplication), as
of the date of determination: 
 (1) the sum of: 

(a) discounted future net revenue from proved crude oil and natural gas reserves of the Company and its Restricted Subsidiaries
calculated in accordance with SEC guidelines before any state or federal income taxes, as estimated in a reserve report prepared as of the end of the Company’s most recently completed fiscal year, which reserve report is prepared or reviewed by
independent petroleum engineers as to reserves accounting for at least 80% of all such discounted future net revenue and by the Company’s petroleum engineers with respect to any other reserves covered by such report, as increased by, as of the
date of determination, the discounted future net revenue from: 
 (i) estimated proved crude oil and natural gas reserves of
the Company and its Restricted Subsidiaries attributable to acquisitions consummated since the date of such year-end reserve report, and 

(ii) estimated crude oil and natural gas reserves of the Company and its Restricted Subsidiaries attributable to extensions,
discoveries and other additions and upward determinations of estimates of proved crude oil and natural gas reserves (including previously estimated development costs incurred during the period and the accretion of discount since the prior year end)
due to exploration, development or exploitation, production or other activities which reserves were not reflected in such year-end reserve report, 

in each case calculated in accordance with SEC guidelines (utilizing the prices utilized in such year-end reserve report), and decreased by, as
of the date of determination, the discounted future net revenue attributable to 
 (iii) estimated proved crude oil and
natural gas reserves of the Company and its Restricted Subsidiaries reflected in such year-end reserve report produced or disposed of since the date of such year-end reserve report and 

  
 2 

 (iv) reductions in the estimated proved crude oil and natural gas reserves of
the Company and its Restricted Subsidiaries reflected in such year-end reserve report since the date of such year-end reserve report attributable to downward determinations of estimates of proved crude oil and natural gas reserves due to
exploration, development or exploitation, production or other activities conducted or otherwise occurring since the date of such year-end reserve report, 

in each case calculated in accordance with SEC guidelines (utilizing the prices utilized in such year-end reserve report); provided, however,
that, in the case of each of the determinations made pursuant to clauses (i) through (iv), such increases and decreases shall be as estimated by the Company’s engineers, except that if as a result of such acquisitions, dispositions,
discoveries, extensions or revisions, there is a Material Change, then such increases and decreases in the discounted future net revenue shall be confirmed in writing by an independent petroleum engineer; 

(b) the capitalized costs that are attributable to crude oil and natural gas properties of the Company and its Restricted
Subsidiaries to which no proved crude oil and natural gas reserves are attributed, based on the Company’s books and records as of a date no earlier than the date of the Company’s latest annual or quarterly financial statements; 

(c) the Net Working Capital on a date no earlier than the date of the Company’s latest annual or quarterly financial
statements; and 
 (d) the greater of (I) the net book value on a date no earlier than the date of the Company’s
latest annual or quarterly financial statements or (II) the appraised value, as estimated by independent appraisers, of other tangible assets of the Company and its Restricted Subsidiaries as of a date no earlier than the date of the
Company’s latest audited financial statements; 
 (2) minus, to the extent not otherwise taken into account in the
immediately preceding clause (1), the sum of: 
 (a) minority interests; 

(b) any net gas balancing liabilities of the Company and its Restricted Subsidiaries reflected in the Company’s latest
audited financial statements; 
 (c) the discounted future net revenue, calculated in accordance with SEC guidelines
(utilizing the same prices utilized in the Company’s year-end reserve report), attributable to reserves subject to participation interests, overriding royalty interests or other interests of third parties, pursuant to participation,
partnership, vendor financing or other agreements then in effect, or which otherwise are required to be delivered to third parties; 

  
 3 

 (d) the discounted future net revenue, calculated in accordance with SEC
guidelines (utilizing the same prices utilized in the Company’s year-end reserve report), attributable to reserves that are required to be delivered to third parties to fully satisfy the obligations of the Company and its Restricted
Subsidiaries with respect to Volumetric Production Payments on the schedules specified with respect thereto; and 
 (e) the
discounted future net revenue, calculated in accordance with SEC guidelines, attributable to reserves subject to Dollar-Denominated Production Payments that, based on the estimates of production included in determining the discounted future net
revenue specified in the immediately preceding clause (1)(a) (utilizing the same prices utilized in the Company’s year-end reserve report), would be necessary to satisfy fully the obligations of the Company and its Restricted Subsidiaries
with respect to Dollar-Denominated Production Payments on the schedules specified with respect thereto. 
 If the Company changes its method of accounting
for its oil and gas properties from the successful efforts method to the full cost method or a similar method of accounting, ACNTA will continue to be calculated as if the Company were still using the successful efforts method of accounting. 

“Acquired Debt” means, with respect to any specified Person: 

(1) Indebtedness of any other Person existing at the time such other Person was merged with or into or became a Subsidiary of
such specified Person, whether or not such Indebtedness is incurred in connection with, or in contemplation of, such other Person merging with or into, or becoming a Subsidiary of, such specified Person; provided, however, that Indebtedness
of such acquired Person which is redeemed, defeased, retired or otherwise repaid at the time of or substantially contemporaneously with the consummation of the transactions by which such Person merges with or into or becomes a Subsidiary of such
Person shall not be Acquired Debt; and 
 (2) Indebtedness secured by a Lien encumbering any asset acquired by such specified
Person. 
 “Additional Assets” means: 

(1) any assets used or useful in the Oil and Gas Business; 

(2) the Capital Stock of a Person that becomes a Restricted Subsidiary as a result of the acquisition of such Capital Stock by
the Company or another Restricted Subsidiary; or 
 (3) Capital Stock constituting a minority in any Person that at such time
is a Restricted Subsidiary; 
 provided, however, that any such Restricted Subsidiary described in clause (2) or (3) is primarily engaged in the Oil
and Gas Business. 

  
 4 

 “Additional Notes” means, subject to the Company’s compliance with
Section 4.09 of the Second Supplemental Indenture, 5.750% Senior Notes due 2021 of the Company as may be originally issued from time to time after the Issue Date under the terms of this Indenture, together with all other Notes issued upon
registration of transfer of, or in exchange for, such Notes. 
 “Affiliate” of any specified Person means any other Person
directly or indirectly controlling or controlled by or under direct or indirect common control with such specified Person. For purposes of this definition, “control,” as used with respect to any Person, means the possession, directly or
indirectly, of the power to direct or cause the direction of the management or policies of such Person, whether through the ownership of voting securities, by agreement or otherwise. For purposes of this definition, the terms
“controlling,” “controlled by” and “under common control with” have correlative meanings. 

“Applicable Law,” except as the context may otherwise require, means all applicable laws, rules, regulations, ordinances,
judgments, decrees, injunctions, writs and orders of any court or governmental or congressional agency or authority and rules, regulations, orders, licenses and permits of any United States federal, state, municipal, regional, or other governmental
body, instrumentality, agency or authority. 
 “Applicable Premium” means, with respect to a Note at any Redemption Date,
the greater of (x) 1.0% of the principal amount of such Note or (y) the excess of (A) the present value at such Redemption Date of (1) the principal amount of such Note plus (2) all required interest payments due on such
Note through the final maturity date of such Note (without regard to accrued and unpaid interest), computed using a discount rate equal to the Treasury Rate plus 50 basis points, over (B) the principal amount of such Note. 

“Asset Sale” means: 

(1) the sale, lease, conveyance or other disposition of any properties or assets (including by way of a Production Payment or
sale and leaseback transaction); provided that the sale, lease, conveyance or other disposition of all or substantially all of the properties or assets of the Company and its Restricted Subsidiaries taken as a whole will be governed by the
provisions of Section 4.15 of the Second Supplemental Indenture and/or the provisions of Section 5.01 of the Second Supplemental Indenture and not by the provisions of Section 4.10 of the Second Supplemental Indenture; and 

(2) the issuance of Equity Interests in any of the Company’s Restricted Subsidiaries or the sale by the Company or any of
the Company’s Restricted Subsidiaries of Equity Interests in any of the Company’s Restricted Subsidiaries (other than directors’ qualifying shares or shares required by applicable law to be held by a Person other than the Company or a
Restricted Subsidiary). 

  
 5 

 Notwithstanding the preceding, the following items will not be deemed to be Asset Sales: 

(1) any single transaction or series of related transactions that involves properties or assets having a fair market value of less than
$15.0 million; 
 (2) a transfer of assets between or among any of the Company and its Restricted Subsidiaries, 

(3) an issuance or sale of Equity Interests by a Restricted Subsidiary to the Company or to another Restricted Subsidiary; 

(4) the sale, lease or other disposition of equipment, inventory, accounts receivable or other properties or assets in the ordinary course of
business, including, without limitation, any abandonment, farm-in, farm-out, lease or sublease of any oil and gas properties or the forfeiture or other disposition of such properties pursuant to standard form operating agreements, in each case in
the ordinary course of business in a manner customary in the Oil and Gas Business; 
 (5) the sale or other disposition of cash or Cash
Equivalents; 
 (6) a Restricted Payment that is permitted by Section 4.07 of the Second Supplemental Indenture or a Permitted
Investment; 
 (7) any trade or exchange by the Company or any Restricted Subsidiary of oil and gas properties or other properties or assets
for oil and gas properties or other properties or assets owned or held by another Person, provided that the fair market value of the properties or assets traded or exchanged by the Company or such Restricted Subsidiary (together with any cash) is
reasonably equivalent to the fair market value of the properties or assets (together with any cash) to be received by the Company or such Restricted Subsidiary, and provided further that any net cash received must be applied in accordance with the
provisions of Section 4.10 of the Second Supplemental Indenture; 
 (8) the creation or perfection of a Lien (but not the sale or other
disposition of the properties or assets subject to such Lien); 
 (9) surrender or waiver of contract rights or the settlement, release or
surrender of contract, tort or other claims of any kind; and 
 (10) any sale or other disposition of damaged, worn-out or obsolete assets
in the ordinary course of business (including the assignment, cancellation or abandonment or other disposition of intellectual property that is, in the reasonable judgment of the Company, no longer economically practicable to maintain or useful in
any material respect in the conduct of the business of the Company and its Restricted Subsidiaries taken as whole). 
 “Attributable
Debt” in respect of a sale and leaseback transaction means, at the time of determination, the present value of the obligation of the lessee for net rental payments during the remaining term of the lease included in such sale and leaseback
transaction including any period for which such lease has been extended or may, at the option of the lessor, be extended. Such present value shall be calculated using a discount rate equal to the rate of interest implicit in such transaction,
determined in accordance with GAAP. 

  
 6 

 “Bankruptcy Law” means Title 11, United States Code, as may be amended from
time to time, or any similar federal or state law for the relief of debtors. 
 “Beneficial Owner” has the meaning assigned
to such term in Rule 13d-3 and Rule 13d-5 under the Exchange Act, except that in calculating the beneficial ownership of any particular “person” (as that term is used in Section 13(d)(3) of the Exchange Act), such
“person” will be deemed to have beneficial ownership of all securities that such “person” has the right to acquire by conversion or exercise of other securities, whether such right is currently exercisable or is exercisable only
upon the occurrence of a subsequent condition. The terms “Beneficially Owns” and “Beneficially Owned” have correlative meanings. 

“Board of Directors” means: 

(1) with respect to a corporation, the board of directors of the corporation or any committee thereof duly authorized to act on
behalf of such board; 
 (2) with respect to a partnership, the Board of Directors of the general partner of the partnership;

 (3) with respect to a limited liability company, the Board of Directors of the managing member, if the managing member is
an entity, or the managing member or members or any controlling committee of managing members thereof, if the managing members are individuals; and 

(4) with respect to any other Person, the board or committee of such Person serving a similar function. 

“Board Resolution” means a copy of a resolution certified by the Secretary or an Assistant Secretary of the applicable Person
to have been duly adopted by the Board of Directors of such Person and to be in full force and effect on the date of such certification, and delivered to the Trustee. 

“Business Day” means each day that is not a Saturday, Sunday or other day on which banking institutions in Chicago, Illinois,
Denver, Colorado or New York, New York or another place of payment are authorized or required by law to close. 
 “Capital Lease
Obligation” means, at the time any determination is to be made, the amount of the liability in respect of a capital lease that would at that time be required to be capitalized on a balance sheet in accordance with GAAP. 

“Capital Stock” means: 

(1) in the case of a corporation, corporate stock; 

  
 7 

 (2) in the case of an association or business entity, any and all shares,
interests, participations, rights or other equivalents (however designated) of corporate stock; 
 (3) in the case of a
partnership or limited liability company, partnership or membership interests (whether general or limited); and 
 (4) any
other interest or participation that confers on a Person the right to receive a share of the profits and losses of, or distributions of assets of, the issuing Person. 

“Cash Equivalents” means: 

(1) United States dollars; 

(2) securities issued or directly and fully guaranteed or insured by the United States government or any agency or
instrumentality of the United States government (provided that the full faith and credit of the United States is pledged in support of those securities) having maturities of not more than one year from the date of acquisition; 

(3) certificates of deposit and eurodollar time deposits with maturities of one year or less from the date of acquisition,
bankers’ acceptances with maturities not exceeding one year and overnight bank deposits, in each case, with any lender party to the Credit Agreement or with any domestic commercial bank; 

(4) repurchase obligations with a term of not more than seven days for underlying securities of the types described in clauses
(2) and (3) above entered into with any financial institution meeting the qualifications specified in clause (3) above; 

(5) commercial paper having one of the two highest ratings obtainable from Moody’s or S&P and in each case maturing
within one year after the date of acquisition; 
 (6) money market funds the assets of which primarily constitute Cash
Equivalents of the kinds described in clauses (1) through (5) of this definition; and 
 (7) repurchase obligations
with a term of not more than seven days for underlying securities of the types described in clause (1) above entered into with any financial institution meeting the qualifications specified in clause (3) above. 

“Change of Control” means the occurrence of any of the following: 

(1) the direct or indirect sale, lease, transfer, conveyance or other disposition (other than by way of merger or
consolidation), in one or a series of related transactions, of all or substantially all of the properties or assets (including Capital Stock of the Restricted Subsidiaries) of the Company and its Restricted Subsidiaries taken as a whole, to any
“person” (as that term is used in Section 13(d)(3) of the Exchange Act), which occurrence is followed by a Rating Decline within 90 days thereof; 

  
 8 

 (2) the adoption of a plan relating to the liquidation or dissolution of the
Company; 
 (3) the consummation of any transaction (including, without limitation, any merger or consolidation) the result
of which is that any “person” (as that term is used in Section 13(d)(3) of the Exchange Act) becomes the Beneficial Owner, directly or indirectly, of more than 50% of the Voting Stock of the Company, measured by voting power rather
than number of shares, which occurrence is followed by a Rating Decline within 90 days thereof; or 
 (4) the first day
on which a majority of the members of the Board of Directors of the Company are not Continuing Directors, which occurrence is followed by a Rating Decline within 90 days thereof. 

“Code” means the Internal Revenue Code of 1986, as amended. 

“Commission” or “SEC” means the Securities and Exchange Commission. 

“Consolidated Cash Flow” means, with respect to any specified Person for any period, the Consolidated Net Income of such
Person for such period plus: 
 (1) an amount equal to any extraordinary loss plus any net loss realized by such Person or
any of its Restricted Subsidiaries in connection with an Asset Sale, to the extent such losses were deducted in computing such Consolidated Net Income; plus 

(2) provision for taxes based on income or profits of such Person and its Restricted Subsidiaries for such period, to the
extent that such provision for taxes was deducted in computing such Consolidated Net Income; plus 
 (3) consolidated
interest expense of such Person and its Restricted Subsidiaries for such period, whether paid or accrued and whether or not capitalized (excluding any interest attributable to Dollar-Denominated Production Payments but including, without limitation,
amortization of debt issuance costs and original issue discount, non-cash interest payments, the interest component of any deferred payment obligations, the interest component of all payments associated with Capital Lease Obligations, imputed
interest with respect to Attributable Debt, commissions, discounts and other fees and charges incurred in respect of letter of credit or bankers’ acceptance financings), and net of the effect of all payments made or received pursuant to Hedging
Obligations, to the extent that any such expense was deducted in computing such Consolidated Net Income; plus 
 (4)
depreciation, depletion and amortization (including amortization of intangibles but excluding amortization of prepaid cash expenses that were paid in a prior period), impairment and other non-cash expenses (excluding any such non-cash expense to the
extent that it represents an accrual of or reserve for cash expenses in any future period or amortization of a prepaid cash expense that was paid in a prior period) of such Person and its Restricted Subsidiaries for such period to the extent that
such depreciation, depletion and amortization, impairment and other non-cash expenses were deducted in computing such Consolidated Net Income; plus 

  
 9 

 (5) unrealized non-cash losses resulting from foreign currency balance sheet
adjustments required by GAAP to the extent such losses were deducted in computing such Consolidated Net Income; minus 
 (6)
non-cash items increasing such Consolidated Net Income for such period, other than items that were accrued in the ordinary course of business; minus (to the extent included in determining Consolidated Net Income); and 

(7) the sum of (x) the amount of deferred revenues that are amortized during such period and are attributable to reserves
that are subject to Volumetric Production Payments and (y) amounts recorded in accordance with GAAP as repayments of principal and interest pursuant to Dollar-Denominated Production Payments, 

in each case, on a consolidated basis and determined in accordance with GAAP. 

“Consolidated Net Income” means, with respect to any specified Person for any period, the aggregate of the Net Income of such
Person and its Restricted Subsidiaries for such period, on a consolidated basis, determined in accordance with GAAP; provided that: 

(1) the Net Income (but not loss) of any Person that is not a Restricted Subsidiary or that is accounted for by the equity
method of accounting will be included, but only to the extent of the amount of dividends or distributions paid in cash to the specified Person or a Restricted Subsidiary of the Person; 

(2) the Net Income of any Restricted Subsidiary will be excluded to the extent that the declaration or payment of dividends or
similar distributions by that Restricted Subsidiary of that Net Income is not at the date of determination permitted without any prior governmental approval (that has not been obtained) or, directly or indirectly, by operation of the terms of its
charter or any agreement, instrument, judgment, decree, order, statute, rule or governmental regulation applicable to that Restricted Subsidiary or its stockholders, partners or members; 

(3) the cumulative effect of a change in accounting principles will be excluded; 

(4) income resulting from transfers of assets (other than cash) between the Company or any of its Restricted Subsidiaries, on
the one hand, and an Unrestricted Subsidiary, on the other hand, will be excluded; 
 (5) any write-downs of non-current
assets will be excluded; provided that any ceiling limitation write-downs under Commission guidelines shall be treated as capitalized costs, as if such write-downs had not occurred; and 

(6) any unrealized non-cash gains or losses or charges in respect of hedge or non-hedge derivatives (including those resulting
from the application of FAS 133 (now codified as FASB Accounting Standards Codification Topic 815)) will be excluded. 
 In addition,
notwithstanding the preceding, for the purposes of Section 4.07 of the Second Supplemental Indenture only, there shall be excluded from Consolidated Net Income any 

  
 10 

 
nonrecurring charges relating to any premium or penalty paid, write off of deferred finance costs or other charges in connection with redeeming or retiring any Indebtedness prior to its Stated
Maturity. 
 “Continuing Directors” means, as of any date of determination, any member of the Board of Directors of the
Company who: 
 (1) was a member of such Board of Directors on the Issue Date; or 

(2) was nominated for election or elected to such Board of Directors with the approval of a majority of the Continuing
Directors who were members of such Board at the time of such nomination or election. 
 “Corporate Trust Office” means the
office of the Trustee at which at any particular time its corporate trust business in Chicago, Illinois shall be principally administered, which office as of the date of this instrument is located at 2 North LaSalle Street, Suite 1020,
Chicago, IL 60602, except that with respect to presentation of Notes for payment or for registration of transfer or exchange, such term shall mean the office or agency of the Trustee at which at any particular time its corporate agency business
shall be conducted, which office at the date of this instrument is located at 101 Barclay Street, New York, New York 10286; Attention: Corporate Trust Division – Corporate Finance Unit, or, in the case of any of such offices or agency,
such other address as the Trustee may designate from time to time by notice to the Holders and the Company. 
 “Credit
Agreement” means that certain Fifth Amended and Restated Credit Agreement, dated as of October 15, 2010, as amended, among Whiting, the Company and the financial institutions parties thereto, providing for revolving credit borrowings,
including any related notes, guarantees, collateral documents, instruments and agreements executed in connection therewith, and in each case as amended, restated, modified, renewed, refunded, replaced or refinanced from time to time. 

“Credit Facilities” means one or more debt facilities (including, without limitation, the Credit Agreement), commercial paper
facilities or secured capital markets financings, in each case with banks or other institutional lenders or institutional investors providing for revolving credit loans, term loans, receivables financing (including through the sale of receivables to
such lenders or to special purpose entities formed to borrow from (or sell receivables to) such lenders against such receivables), letters of credit or secured capital markets financings, in each case, as amended, restated, modified, renewed,
refunded, replaced or refinanced (including refinancing with any capital markets transaction) in whole or in part from time to time. 

“Custodian” means any receiver, trustee, assignee, liquidator, sequestrator or similar official under any Bankruptcy Law.

 “Default” means any event that is, or with the passage of time or the giving of notice or both would be, an Event of
Default. 
 “Disqualified Stock” means any Capital Stock that, by its terms (or by the terms of any security into which it
is convertible, or for which it is exchangeable, in each case at the option of the holder of the Capital Stock), or upon the happening of any event, matures or is mandatorily 

  
 11 

 
redeemable, pursuant to a sinking fund obligation or otherwise, or redeemable at the option of the holder of the Capital Stock, in whole or in part, on or prior to the date that is 91 days
after the date on which the Notes mature. Notwithstanding the preceding sentence, any Capital Stock that would constitute Disqualified Stock solely because the holders of the Capital Stock have the right to require the Company to repurchase or
redeem such Capital Stock upon the occurrence of a change of control or an asset sale will not constitute Disqualified Stock if the terms of such Capital Stock provide that the Company may not repurchase or redeem any such Capital Stock pursuant to
such provisions unless such repurchase or redemption complies with Section 4.07 of the Second Supplemental Indenture. 

“Dollar-Denominated Production Payments” means production payment obligations recorded as liabilities in accordance with
GAAP, together with all undertakings and obligations in connection therewith. 
 “Domestic Subsidiary” means any Restricted
Subsidiary of the Company other than a Foreign Subsidiary. 
 “Equity Interests” means Capital Stock and all warrants,
options or other rights to acquire Capital Stock (but excluding any debt security that is convertible into, or exchangeable for, Capital Stock). 

“Existing Indebtedness” means the aggregate principal amount of Indebtedness of the Company and its Restricted Subsidiaries
(other than Indebtedness under the Credit Agreement which is considered incurred under the first paragraph of Section 4.09 of the Second Supplemental Indenture) in existence on the Issue Date, until such amounts are repaid. 

“Fixed Charge Coverage Ratio” means with respect to any specified Person for any four-quarter reference period, the ratio of
the Consolidated Cash Flow of such Person for such period to the Fixed Charges of such Person for such period. In the event that the specified Person or any of its Restricted Subsidiaries incurs, assumes, guarantees, repays, repurchases or redeems
any Indebtedness (other than ordinary working capital borrowings) or issues, repurchases or redeems preferred stock subsequent to the commencement of the applicable four-quarter reference period and on or prior to the date on which the event for
which the calculation of the Fixed Charge Coverage Ratio is made (the “Calculation Date”), then the Fixed Charge Coverage Ratio will be calculated giving pro forma effect to such incurrence, assumption, guarantee, repayment, repurchase or
redemption of Indebtedness, or such issuance, repurchase or redemption of preferred stock, and the use of the proceeds therefrom as if the same had occurred at the beginning of such period. 

In addition, for purposes of calculating the Fixed Charge Coverage Ratio: 

(1) acquisitions that have been made by the specified Person or any of its Restricted Subsidiaries, including through mergers
or consolidations and including any related financing transactions, subsequent to the commencement of the applicable four-quarter reference period and on or prior to the Calculation Date will be given pro forma effect as if they had occurred on the
first day of such period, including any Consolidated Cash Flow and any pro forma expense and cost reductions that have occurred or are reasonably expected to occur, in the reasonable judgment of the chief financial or accounting officer of the
Company (regardless of whether those cost savings or operating 

  
 12 

 
improvements could then be reflected in pro forma financial statements in accordance with Regulation S-X promulgated under the Securities Act or any other regulation or policy of the
Commission related thereto); 
 (2) the Consolidated Cash Flow attributable to discontinued operations, as determined in
accordance with GAAP, and operations or businesses disposed of prior to the Calculation Date, will be excluded; and 
 (3)
the Fixed Charges attributable to discontinued operations, as determined in accordance with GAAP, and operations or businesses disposed of prior to the Calculation Date, will be excluded, but only to the extent that the obligations giving rise to
such Fixed Charges will not be obligations of the specified Person or any of its Restricted Subsidiaries following the Calculation Date. 

“Fixed Charges” means, with respect to any specified Person for any period, the sum, without duplication, of: 

(1) the consolidated interest expense of such Person and its Restricted Subsidiaries for such period, whether paid or accrued
(excluding any interest attributable to Dollar-Denominated Production Payments but including, without limitation, amortization of debt issuance costs and original issue discount, non-cash interest payments, the interest component of any deferred
payment obligations, the interest component of all payments associated with Capital Lease Obligations, imputed interest with respect to Attributable Debt, commissions, discounts and other fees and charges incurred in respect of letter of credit or
bankers’ acceptance financings), and net of the effect of all payments made or received pursuant to Hedging Obligations; plus 

(2) the consolidated interest expense of such Person and its Restricted Subsidiaries that was capitalized during such period;
plus 
 (3) any interest expense on Indebtedness of another Person that is guaranteed by such Person or one of its Restricted
Subsidiaries or secured by a Lien on assets of such Person or one of its Restricted Subsidiaries, whether or not such guarantee or Lien is called upon; plus 

(4) all dividends, whether paid or accrued and whether or not in cash, on any series of preferred stock of such Person or any
of its Restricted Subsidiaries, other than dividends on Equity Interests payable solely in Equity Interests of the Company (other than Disqualified Stock) or to the Company or a Restricted Subsidiary of the Company, 

in each case, on a consolidated basis and in accordance with GAAP. 

“Foreign Subsidiary” means any Restricted Subsidiary of the Company that was not formed under the laws of the United States
or any state of the United States or the District of Columbia and that conducts substantially all of its operations outside the United States. 

“GAAP” means generally accepted accounting principles in the United States, which are in effect on the Issue Date. 

  
 13 

 “Government Securities” means direct obligations of, or obligations guaranteed
by, the United States of America for the payment of which guarantee or obligations the full faith and credit of the United States is pledged. 

The term “guarantee” means a guarantee other than by endorsement of negotiable instruments for collection in the ordinary
course of business, direct or indirect, in any manner including, without limitation, by way of a pledge of assets or through letters of credit or reimbursement agreements in respect thereof, of all or any part of any Indebtedness. When used as a
verb, “guarantee” has a correlative meaning. 
 “Guarantor” or “Subsidiary Guarantor” means
(a) Whiting, (b) any other Restricted Subsidiary of the Company that becomes a Guarantor of the Notes by executing a supplement to this Indenture in accordance with Section 4.13 or 10.03 of the Second Supplemental Indenture and
(c) the respective successors and assigns of such Restricted Subsidiaries, as required under Article 10 of the Second Supplemental Indenture, in each case until such time as any such Restricted Subsidiary shall be released and relieved of
its obligations pursuant to Section 8.02, 8.03 or 10.04 of the Second Supplemental Indenture. 
 “Hedging Obligations”
means, with respect to any specified Person, the obligations of such Person incurred in the normal course of business and consistent with past practices and not for speculative purposes under: 

(1) interest rate swap agreements, interest rate cap agreements and interest rate collar agreements entered into with one of
more financial institutions and designed to protect the Person or any of its Restricted Subsidiaries entering into the agreement against fluctuations in interest rates with respect to Indebtedness incurred and not for purposes of speculation; 

(2) foreign exchange contracts and currency protection agreements entered into with one of more financial institutions and
designed to protect the Person or any of its Restricted Subsidiaries entering into the agreement against fluctuations in currency exchanges rates with respect to Indebtedness incurred and not for purposes of speculation; 

(3) any commodity futures contract, commodity option or other similar agreement or arrangement designed to protect against
fluctuations in the price of oil, natural gas or other commodities used, produced, processed or sold by that Person or any of its Restricted Subsidiaries at the time; and 

(4) other agreements or arrangements designed to protect such Person or any of its Restricted Subsidiaries against fluctuations
in interest rates, commodity prices or currency exchange rates. 
 “Holder” or “Noteholder” means a Person
in whose name a Note is registered. 
 “Indebtedness” means, with respect to any specified Person, any indebtedness of such
Person, whether or not contingent: 
 (1) in respect of borrowed money; 

  
 14 

 (2) evidenced by bonds, notes, debentures or similar instruments or letters of
credit (or reimbursement agreements in respect thereof); 
 (3) in respect of bankers’ acceptances; 

(4) representing Capital Lease Obligations; 

(5) representing the balance deferred and unpaid of the purchase price of any property, except any such balance that
constitutes an accrued expense or trade payable; or 
 (6) representing any Hedging Obligations, 

if and to the extent any of the preceding items (other than letters of credit and Hedging Obligations) would appear as a liability upon a balance sheet of the
specified Person prepared in accordance with GAAP. In addition, the term “Indebtedness” includes all Indebtedness of others secured by a Lien on any asset of the specified Person (whether or not such Indebtedness is assumed by the
specified Person) and, to the extent not otherwise included, the guarantee by the specified Person of any Indebtedness of any other Person (including, with respect to any Production Payment, any warranties or guarantees of production or payment by
such Person with respect to such Production Payment, but excluding other contractual obligations of such Person with respect to such Production Payment). Subject to the preceding sentence, neither Dollar-Denominated Production Payments nor
Volumetric Production Payments shall be deemed to be Indebtedness. 
 The amount of any Indebtedness outstanding as of any date will be:

 (1) the accreted value of the Indebtedness, in the case of any Indebtedness issued with original issue discount; 

(2) in the case of any Hedging Obligation, the termination value of the agreement or arrangement giving rise to such Hedging
Obligation that would be payable by such Person at such date; and 
 (3) the principal amount of the Indebtedness, together
with any interest on the Indebtedness that is more than 30 days past due, in the case of any other Indebtedness. 
 “Investment
Grade Rating” means a rating equal to or higher than “Baa3” or the equivalent) by Moody’s and “BBB-” (or the equivalent) by S&P. 

“Initial Notes” means the Notes issued on the Issue Date, together with all other Notes issued upon registration of transfer
of, or in exchange for, such Notes. 
 “Investments” means, with respect to any Person, all direct or indirect investments
by such Person in other Persons (including Affiliates) in the forms of loans (including guarantees or other obligations), advances or capital contributions (excluding commission, travel and similar advances to officers and employees made in the
ordinary course of business), purchases or other acquisitions for consideration of Indebtedness, Equity Interests or other securities, together with all items that are or would be classified as investments on a balance sheet prepared in accordance
with GAAP. If the Company or any Restricted Subsidiary of the Company sells or otherwise 

  
 15 

 
disposes of any Equity Interests of any direct or indirect Restricted Subsidiary of the Company such that, after giving effect to any such sale or disposition, such Person is no longer a
Restricted Subsidiary of the Company, the Company will be deemed to have made an Investment on the date of any such sale or disposition in an amount equal to the fair market value of the Equity Interests of such Restricted Subsidiary not sold or
disposed of in an amount determined as provided in the final paragraph of Section 4.07 of the Second Supplemental Indenture. The acquisition by the Company or any Subsidiary of the Company of a Person that holds an Investment in a third Person
will be deemed to be an Investment made by the Company or such Subsidiary in such third Person in an amount equal to the fair market value of the Investment held by the acquired Person in such third Person on the date of any such acquisition in an
amount determined as provided in the final paragraph of Section 4.07 of the Second Supplemental Indenture. 
 “Issue
Date” means September 12, 2013. 
 “Legal Holiday” means any calendar day other than a Business Day. If a
payment date is a Legal Holiday, payment may be made on the next succeeding day that is not a Legal Holiday, and no interest shall accrue for the intervening period. 

“Lien” means, with respect to any asset, any mortgage, lien, pledge, charge, security interest or encumbrance of any kind in
respect of such asset, whether or not filed, recorded or otherwise perfected under Applicable Law, including any conditional sale or other title retention agreement, any lease in the nature thereof, any option or other agreement to sell or give a
security interest in and any filing of or agreement to give any financing statement under the Uniform Commercial Code (or equivalent statutes) of any jurisdiction other than a precautionary financing statement not intended as a security agreement.

 “Material Change” means an increase or decrease (excluding changes that result solely from changes in prices and changes
resulting from the incurrence of previously estimated future development costs) of more than 25% during a fiscal quarter in the discounted future net revenues from proved crude oil and natural gas reserves of the Company and its Restricted
Subsidiaries, calculated in accordance with clause (1)(a) of the definition of ACNTA; provided, however, that the following will be excluded from the calculation of Material Change: 

(1) any acquisitions during the fiscal quarter of oil and gas reserves that have been estimated by independent petroleum
engineers and with respect to which a report or reports of such engineers exist; and 
 (2) any disposition of properties
existing at the beginning of such fiscal quarter that have been disposed of in compliance with Section 4.10 of the Second Supplemental Indenture. 

“Material Domestic Subsidiary” means any one Domestic Subsidiary, or any group of two or more Domestic Subsidiaries, that is
not a Guarantor at the time of determination and that at such time has either assets or quarterly revenues in excess of 3.0% of the consolidated assets or quarterly revenues of the Company and its Restricted Subsidiaries, in each case based upon the
most recent quarterly financial statements available to the Company. 

  
 16 

 “Moody’s” means Moody’s Investors Service, Inc. or any successor to
the rating agency business thereof. 
 “Net Income” means, with respect to any specified Person, the net income (loss) of
such Person, determined in accordance with GAAP and before any reduction in respect of preferred stock dividends, excluding, however: 

(1) any gain (but not loss), together with any related provision for taxes on such gain (but not loss), realized in connection
with: (a) any Asset Sale; or (b) the disposition of any securities by such Person or any of its Subsidiaries or the extinguishment of any Indebtedness of such Person or any of its Subsidiaries; and 

(2) any extraordinary gain (but not loss), together with any related provision for taxes on such extraordinary gain (but not
loss). 
 “Net Proceeds” means the aggregate cash proceeds and Cash Equivalents received by the Company or any of its
Restricted Subsidiaries in respect of any Asset Sale (including, without limitation, any cash or Cash Equivalents received upon the sale or other disposition of any non-cash consideration received in any Asset Sale), net of: 

(1) the direct costs relating to such Asset Sale, including, without limitation, legal, accounting and investment banking fees,
and sales commissions, and any relocation expenses incurred as a result of the Asset Sale, 
 (2) taxes paid or payable as a
result of the Asset Sale, in each case, after taking into account any available tax credits or deductions and any tax sharing arrangements, 

(3) amounts required to be applied to the repayment of Indebtedness, other than under the Credit Facilities, secured by a Lien
on the properties or assets that were the subject of such Asset Sale, and 
 (4) any reserve for adjustment in respect of the
sale price of such properties or assets established in accordance with GAAP. 
 “Net Working Capital” means: 

(1) all current assets of the Company and its Restricted Subsidiaries, minus 

(2) all current liabilities of the Company and its Restricted Subsidiaries, except current liabilities included in
Indebtedness; 
 in each case, on a consolidated basis and determined in accordance with GAAP. 

“Non-Recourse Debt” means Indebtedness: 

(1) as to which neither the Company nor any of its Restricted Subsidiaries (a) provides credit support of any kind
(including any undertaking, agreement or instrument that would constitute Indebtedness), (b) is directly or indirectly liable as a guarantor or otherwise, or (c) is the lender; 

  
 17 

 (2) no default with respect to which (including any rights that the holders of
the Indebtedness may have to take enforcement action against an Unrestricted Subsidiary) would permit upon notice, lapse of time or both any holder of any other Indebtedness (other than the Notes) of the Company or any of its Restricted Subsidiaries
to declare a default on such other Indebtedness or cause the payment of the Indebtedness to be accelerated or payable prior to its Stated Maturity; and 

(3) as to which the lenders have been notified in writing that they will not have any recourse to the stock or assets of the
Company or any of its Restricted Subsidiaries. 
 “Notes” means the Initial Notes and the Additional Notes, treated as a
single class. 
 “Obligations” means any principal, premium, if any, interest (including interest accruing on or after the
filing of any petition in bankruptcy or for reorganization, whether or not a claim for post-filing interest is allowed in such proceeding), penalties, fees, charges, expenses, indemnifications, reimbursement obligations, damages, guarantees, and
other liabilities or amounts payable under the documentation governing any Indebtedness or in respect thereto. 
 “Officer”
means, with respect to any Person, the Chairman of the Board, the Chief Executive Officer, the President, the Chief Operating Officer, the Chief Financial Officer, the Treasurer, any Assistant Treasurer, the Controller, the Secretary, any Assistant
Secretary or any Vice President of such Person. 
 “Officers’ Certificate” means a certificate signed on behalf of the
Company by two Officers of the Company, one of whom must be the principal executive officer, the principal financial officer, the treasurer or the principal accounting officer of the Company, that meets the requirements of Section 102 hereof.

 “Oil and Gas Business” means: 

(1) the acquisition, exploration, development, operation and disposition of interests in oil, natural gas and other hydrocarbon
properties; 
 (2) the gathering, marketing, treating, processing (but not refining), storage, selling and transporting of
any production from those interests; and 
 (3) any activity necessary, appropriate or incidental to the activities described
above. 
 “Opinion of Counsel” means an opinion from legal counsel who is reasonably acceptable to the Trustee, that meets
the requirements of Section 102 hereof. The counsel may be an employee of or counsel to the Company, any Subsidiary of the Company or the Trustee. 

The term “outstanding,” when used with respect to the Notes, has the meaning provided in Section 2.03 of the Second
Supplemental Indenture. 

  
 18 

 “Pari Passu Indebtedness” means, with respect to any Excess Proceeds from Asset
Sales, Indebtedness of the Company or any Guarantor that ranks equally in right of payment with the Notes or the Subsidiary Guarantees, as the case may be, and the terms of which require the Company or such Restricted Subsidiary to apply such Excess
Proceeds to offer to repurchase such Indebtedness. 
 “Permitted Business Investments” means Investments made in the
ordinary course of, and of a nature that is or shall have become customary in, the Oil and Gas Business, including through agreements, transactions, interests or arrangements that permit one to share risk or costs, comply with regulatory
requirements regarding local ownership or satisfy other objectives customarily achieved through the conduct of the Oil and Gas Business jointly with third parties, including without limitation: 

(1) direct or indirect ownership of crude oil, natural gas, other related hydrocarbon and mineral properties or any interest
therein or gathering, transportation, processing, storage or related systems; and 
 (2) the entry into operating agreements,
joint ventures, processing agreements, working interests, royalty interests, mineral leases, farm-in agreements, farm-out agreements, development agreements, production sharing agreements, area of mutual interest agreements, contracts for the sale,
transportation or exchange of crude oil and natural gas and related hydrocarbons and minerals, unitization agreements, pooling arrangements, joint bidding agreements, service contracts, partnership agreements (whether general or limited), or other
similar or customary agreements, transactions, properties, interests or arrangements and Investments and expenditures in connection therewith or pursuant thereto, in each case made or entered into in the ordinary course of the Oil and Gas Business.

 “Permitted Investments” means: 

(1) any Investment in the Company or in a Restricted Subsidiary of the Company; 

(2) any Investment in Cash Equivalents; 

(3) any Investment by the Company or any Restricted Subsidiary of the Company in a Person, if as a result of such Investment:

 (a) such Person becomes a Restricted Subsidiary of the Company; or 

(b) such Person is merged, consolidated or amalgamated with or into, or transfers or conveys substantially all of its
properties or assets to, or is liquidated into, the Company or a Restricted Subsidiary of the Company; 
 (4) any Investment
made as a result of the receipt of non-cash consideration from an Asset Sale that was made pursuant to and in compliance with Section 4.10 of the Second Supplemental Indenture; 

  
 19 

 (5) any Investment in any Person solely in exchange for the issuance of Equity
Interests (other than Disqualified Stock) of the Company; 
 (6) any Investments received in compromise of obligations of
trade creditors or customers that were incurred in the ordinary course of business, including pursuant to any plan of reorganization or similar arrangement upon the bankruptcy or insolvency of any trade creditor or customer, or as a result of
foreclosure by the Company or any of its Restricted Subsidiaries with respect to any secured Investment in default; 
 (7)
Hedging Obligations permitted to be incurred under Section 4.09 of the Second Supplemental Indenture; 
 (8) Permitted
Business Investments; 
 (9) Investments of a Restricted Subsidiary of the Company acquired after the Issue Date or of a
entity merged or consolidated with or into the Company or such Restricted Subsidiary in a transaction that is not prohibited by the covenant described in Section 5.01 of the Second Supplemental Indenture after the Issue Date to the extent that
such Investments were not made in contemplation of such acquisition, merger or consolidation and were in existence on the date of such acquisition, merger or consolidation; and 

(10) other Investments in any Person having an aggregate fair market value (measured on the date each such Investment was made
and without giving effect to subsequent changes in value), when taken together with all other Investments made pursuant to this clause (10) that are at the time outstanding, not to exceed the greater of (a) $250.0 million or
(b) 2.5% of ACNTA. 
 “Permitted Liens” means: 

(1) Liens securing any Indebtedness under any Credit Facility; 

(2) Liens in favor of the Company or the Guarantors; 

(3) Liens on property of a Person existing at the time such Person is merged with or into or consolidated with the Company or
any Restricted Subsidiary of the Company, provided that such Liens were in existence prior to the contemplation of such merger or consolidation and do not extend to any assets other than those of the Person merged into or consolidated with the
Company or the Restricted Subsidiary; 
 (4) Liens on property (including Capital Stock) existing at the time of acquisition
of the property by the Company or any Restricted Subsidiary of the Company, provided that such Liens were in existence prior to the contemplation of such acquisition; 

(5) Liens securing Indebtedness (including Capital Lease Obligations) incurred in connection with the acquisition by the
Company or any Restricted Subsidiary of assets used in the Oil and Gas Business (including the office buildings and other real property used by the Company or such Restricted Subsidiary in conducting its operations), provided that (i) such
Liens attach only to the assets acquired with the proceeds of such Indebtedness, and (ii) such Indebtedness is not in excess of the purchase price of such fixed assets; 

  
 20 

 (6) Liens existing on the Issue Date (other than under the Credit Agreement);

 (7) Liens securing Hedging Obligations of the Company or any of its Restricted Subsidiaries; 

(8) any Lien incurred in the ordinary course of business incidental to the conduct of the business of the Company or the
Restricted Subsidiaries or the ownership of their property (including (a) easements, rights of way and similar encumbrances, (b) rights or title of lessors under leases (other than Capital Lease Obligations), (c) rights of collecting
banks having rights of setoff, revocation, refund or chargeback with respect to money or instruments of the Company or the Restricted Subsidiaries on deposit with or in the possession of such banks, (d) Liens imposed by law, including Liens
under workers’ compensation or similar legislation and mechanics’, carriers’, warehousemen’s, materialmen’s, suppliers’ and vendors’ Liens, (e) Liens incurred to secure performance of obligations with respect
to statutory or regulatory requirements, performance or return-of-money bonds, surety bonds or other obligations of a like nature and incurred in a manner consistent with industry practice, or (f) operators Liens under joint operating
agreements or similar customary agreements in the Oil and Gas Business); 
 (9) Liens securing all outstanding Notes and the
Subsidiary Guarantees thereof; 
 (10) Liens securing Indebtedness incurred to refinance Indebtedness incurred under
clauses (3), (4) or (5) that was previously so secured, provided that any such Lien is limited to all or part of the same property or assets (plus improvements, accessions, proceeds or dividends or distributions in respect thereof) that secured
(or, under the written arrangements under which the original Lien arose, could secure) the Indebtedness being refinanced or is in respect of property that is the security for a Permitted Lien hereunder; and 

(11) Liens incurred in the ordinary course of business of the Company or any Restricted Subsidiary of the Company with respect
to obligations that do not exceed, at the time of incurrence of such Lien, the greater of (a) $250.0 million or (b) 2.5% of ACNTA at any one time outstanding. 

“Permitted Refinancing Indebtedness” means any Indebtedness of the Company or any of its Restricted Subsidiaries issued in
exchange for, or the net proceeds of which are used to extend, refinance, renew, replace, defease or refund other Indebtedness of the Company or any of its Restricted Subsidiaries (other than intercompany Indebtedness); provided that: 

(1) the principal amount (or accreted value, if applicable) of such Permitted Refinancing Indebtedness does not exceed the
principal amount (or accreted value, if applicable) of the Indebtedness being extended, refinanced, renewed, replaced, defeased or refunded (plus all accrued interest on the Indebtedness and the amount of all expenses and premiums incurred in
connection therewith); 

  
 21 

 (2) such Permitted Refinancing Indebtedness has a final maturity date later than
the final maturity date of, and has a Weighted Average Life to Maturity equal to or greater than the Weighted Average Life to Maturity of, the Indebtedness being extended, refinanced, renewed, replaced, defeased or refunded; 

(3) if the Indebtedness being extended, refinanced, renewed, replaced, defeased or refunded is subordinated in right of payment
to the Notes or the Subsidiary Guarantees, such Permitted Refinancing Indebtedness is subordinated in right of payment to the Notes or the Subsidiary Guarantees on terms at least as favorable to the Noteholders as those contained in the
documentation governing the Indebtedness being extended, refinanced, renewed, replaced, defeased or refunded; and 
 (4) such
Indebtedness is not incurred by a Restricted Subsidiary of the Company if the Company is the obligor on the Indebtedness being extended, refinanced, renewed, replaced, defeased or refunded; provided, however, that a Restricted Subsidiary that is
also a Guarantor may guarantee Permitted Refinancing Indebtedness incurred by the Company, whether or not such Restricted Subsidiary was an obligor or guarantor of the Indebtedness being extended, refinanced, renewed, replaced, defeased or refunded.

 Notwithstanding the preceding, any Indebtedness incurred under Credit Facilities pursuant to Section 4.09 of the Second Supplemental Indenture shall
be subject only to the refinancing provision in the definition of Credit Facilities and not pursuant to the requirements set forth in the definition of Permitted Refinancing Indebtedness. 

“Person” means any individual, corporation, partnership, joint venture, association, joint-stock company, trust,
unincorporated organization, limited liability company or government or other entity. 
 “Production Payments” means,
collectively, Dollar-Denominated Production Payments and Volumetric Production Payments. 
 “Rating Agency” means each of
S&P and Moody’s, or if S&P or Moody’s or both shall not make a rating on the Notes publicly available, a nationally recognized statistical rating agency or agencies, as the case may be, selected by the Company (as evidenced by a
Board Resolution) which shall be substituted for S&P or Moody’s, or both, as the case may be. 
 “Rating Decline”
means the occurrence of a decrease of one or more gradations (including gradations within rating categories as well as between rating categories) in the rating of the Notes by either Rating Agency. 

“Reporting Failure” means the failure of the Company to file with the Commission and make available or otherwise deliver to
the trustee and each Holder of Notes, within the time periods specified in Section 4.03 of the Second Supplemental Indenture (after giving effect to any grace period specified under Rule 12b-25 under the Exchange Act), the periodic
reports, information, documents or other reports that the Company may be required to file with the Commission pursuant to such provision. 

  
 22 

 “Responsible Officer” means, with respect to the Trustee, any officer assigned
to the Corporate Trust Division—Corporate Finance Unit (or any successor division or unit) of the Trustee located at the Corporate Trust Office of the Trustee having direct responsibility for the administration of this Indenture or to whom any
corporate trust matter is referred because of such person’s knowledge of and familiarity with the particular subject. 

“Restricted Investment” means an Investment other than a Permitted Investment. 

“Restricted Subsidiary” of a Person means any Subsidiary of the referent Person that is not an Unrestricted Subsidiary. 

“S&P” means Standard & Poor’s Ratings Services, a division of The McGraw-Hill Companies, Inc., or any
successor to the rating agency business thereof. 
 “sale and leaseback transaction” means an arrangement relating to
property owned by the Company or a Restricted Subsidiary on the Issue Date or thereafter acquired by the Company or a Restricted Subsidiary whereby the Company or a Restricted Subsidiary transfers such property to a Person and the Company or a
Restricted Subsidiary leases it from such Person. 
 “SEC” or “Commission” means the Securities and Exchange
Commission. 
 “Second Supplemental Indenture” means this Second Supplemental Indenture, dated as of the Issue Date, among
the Company, the Guarantor named on the signature page hereof and the Trustee relating to the Notes, as it may be amended from time to time in accordance with the Indenture. 

“Significant Subsidiary” means any Subsidiary that would be a “significant subsidiary” as defined in
Article 1, Rule 1-02 of Regulation S-X, promulgated pursuant to the Securities Act, as such Regulation is in effect on the Issue Date. 

“Stated Maturity” means, with respect to any installment of interest or principal on any series of Indebtedness, the date on
which the payment of interest or principal was scheduled to be paid in the original documentation governing such Indebtedness, and will not include any contingent obligations to repay, redeem or repurchase any such interest or principal prior to the
date originally scheduled for the payment thereof. 
 “Subsidiary” means, with respect to any specified Person: 

(1) any corporation, association or other business entity (other than a partnership) of which more than 50% of the total voting
power of Voting Stock is at the time owned or controlled, directly or through another Subsidiary, by that Person or one or more of the other Subsidiaries of that Person (or a combination thereof); and 

(2) any partnership (a) the sole general partner or the managing general partner of which is such Person or a Subsidiary
of such Person or (b) the only general partners of which are that Person or one or more Subsidiaries of that Person (or any combination thereof), but only if such Person and its Subsidiaries are entitled to receive more than 20% of the assets
of such partnership upon its dissolution. 

  
 23 

 “Subsidiary Guarantees” means the joint and several guarantees issued by all of
the Guarantors pursuant to Article 10 of the Second Supplemental Indenture. 
 “TIA” means the Trust Indenture Act.

 “Treasury Rate” means the yield to maturity at the time of computation of the United States Treasury securities with a
constant maturity (as compiled and published in the most recent Federal Reserve Statistical Release H.15 (519) that has become publicly available at least two business days prior to the Redemption Date (or, if such Statistical Release is
no longer published, any publicly available source or similar market data)) most nearly equal to the period from the Redemption Date to the final maturity date of the Notes; provided, however, that if the period from the Redemption Date to
such final maturity date is not equal to the constant maturity of a United States Treasury security for which a weekly average yield is given, the Treasury Rate shall be obtained by linear interpolation (calculated to the nearest one-twelfth of a
year) from the weekly average yields of United States Treasury securities for which such yields are given, except that if the period from the Redemption Date to such final maturity date is less than one year, the weekly average yield on actually
traded United States Treasury securities adjusted to a constant maturity of one year shall be used. 
 “Uniform Commercial
Code” means the New York Uniform Commercial Code as in effect from time to time. 
 “Unrestricted Subsidiary”
means any Subsidiary of the Company (other than Whiting) that is designated by the Board of Directors as an Unrestricted Subsidiary pursuant to a Board Resolution, but only to the extent that such Subsidiary: 

(1) has no Indebtedness other than Non-Recourse Debt; 

(2) is not party to any agreement, contract, arrangement or understanding with the Company or any Restricted Subsidiary of the
Company unless the terms of any such agreement, contract, arrangement or understanding are no less favorable to the Company or such Restricted Subsidiary than those that might be obtained at the time from Persons who are not Affiliates of the
Company; 
 (3) is a Person with respect to which neither the Company nor any of its Restricted Subsidiaries has any direct
or indirect obligation (a) to subscribe for additional Equity Interests or (b) to maintain or preserve such Person’s financial condition or to cause such Person to achieve any specified levels of operating results; and 

(4) has not guaranteed or otherwise directly or indirectly provided credit support for any Indebtedness of the Company or any
of its Restricted Subsidiaries. 
 Any designation of a Subsidiary of the Company as an Unrestricted Subsidiary will be evidenced to the
Trustee by filing with the Trustee the Board Resolution giving effect to such designation and an Officers’ Certificate certifying that such designation complied with the preceding conditions and was permitted by Section 4.07 of the Second
Supplemental Indenture. If, at any time, any Unrestricted Subsidiary would fail to meet the preceding requirements as an Unrestricted Subsidiary, it will thereafter cease to be an Unrestricted Subsidiary for purposes of this Indenture and any
Indebtedness of such Subsidiary will be deemed to be incurred by a 

  
 24 

 
Restricted Subsidiary of the Company as of such date and, if such Indebtedness is not permitted to be incurred as of such date under Section 4.09 of the Second Supplemental Indenture, the
Company will be in default of such covenant. 
 “Volumetric Production Payments” means production payment obligations
recorded as deferred revenue in accordance with GAAP, together with all related undertakings and obligations. 
 “Voting
Stock” of any Person as of any date means the Capital Stock of such Person that is at the time entitled (without regard to the occurrence of any contingency) to vote in the election of the Board of Directors of such Person. 

“Weighted Average Life to Maturity” means, when applied to any Indebtedness at any date, the number of years obtained by
dividing: 
 (1) the sum of the products obtained by multiplying (a) the amount of each then remaining installment,
sinking fund, serial maturity or other required payments of principal, including payment at final maturity, in respect of the Indebtedness, by (b) the number of years (calculated to the nearest one-twelfth) that will elapse between such date
and the making of such payment; by 
 (2) the then outstanding principal amount of such Indebtedness. 

“Whiting” means Whiting Oil and Gas Corporation, a Delaware corporation, and its successors. 

“2014 Notes” means the Company’s 7% Senior Subordinated Notes due 2014 or any guarantees thereof that are outstanding on
the Issue Date. 
 Section 1.02. Other Definitions. 
  

					
	 Term
	  	Defined
in Section	 
	 “Affiliate Transaction”
	  	 	4.11	  
	 “Asset Sale Offer”
	  	 	3.04	  
	 “Change of Control Offer”
	  	 	4.15	  
	 “Change of Control Payment”
	  	 	4.15	  
	 “Change of Control Purchase Date”
	  	 	4.15	  
	 “Change of Control Settlement Date”
	  	 	4.15	  
	 “Covenant Defeasance”
	  	 	8.03	  
	 “Discharge”
	  	 	8.08	  
	 “Event of Default”
	  	 	6.01	  
	 “Excess Proceeds”
	  	 	4.10	  
	 “incur”
	  	 	4.09	  
	 “Legal Defeasance”
	  	 	8.02	  
	 “Offer Amount”
	  	 	3.04	  
	 “Offer Period”
	  	 	3.04	  
	 “Payment Default”
	  	 	6.01	  
	 “Permitted Debt”
	  	 	4.09	  
	 “Restricted Payments”
	  	 	4.07	  
	 “Settlement Date”
	  	 	3.04	  
	 “Termination Date”
	  	 	3.04	  

  
 25 

 Section 1.03. Rules of Construction. 

Unless the context otherwise requires, in construing this Second Supplemental Indenture: 

(1) a term has the meaning assigned to it herein or, if not assigned herein, then in the Original Indenture; 

(2) an accounting term not otherwise defined has the meaning assigned to it in accordance with GAAP; 

(3) “or” is not exclusive; 

(4) words in the singular include the plural, and in the plural include the singular; 

(5) provisions apply to successive events and transactions; 

(6) references to sections of or rules under the Securities Act or the Exchange Act shall be deemed to include substitute,
replacement or successor sections or rules adopted by the SEC from time to time; and 
 (7) “herein,”
“hereof” and other words of similar import refer to this Second Supplemental Indenture as a whole (as amended or supplemented from time to time) and not to any particular Article, Section or other subdivision, and references to specific
Sections, Articles or other subdivisions without contrary reference shall refer to Sections, Articles or subdivisions of the Second Supplemental Indenture, as applicable. 

ARTICLE 2 
 THE NOTES 

Section 2.01. Creation and Form. 

Pursuant to Sections 201 and 301 of the Original Indenture, there is hereby created a new series of Securities designated as the
“5.750% Senior Notes due 2021” (which are herein referred to as the “Notes” for purposes of this Second Supplemental Indenture). The Notes shall be substantially in the form specified in Exhibit A to this Second Supplemental
Indenture, shall have the terms set forth therein and shall be entitled to the benefits of the other provisions of the Original Indenture as modified by this Second Supplemental Indenture and specified herein. 

Section 2.02. Execution and Authentication. 

On the Issue Date, the Trustee shall authenticate and deliver $800,000,000 of Initial Notes and, at any time and from time to time thereafter,
the Trustee shall authenticate and deliver Additional Notes for original issue, in each case upon the Trustee’s receipt of a Company Order in accordance with Section 303 of the Original Indenture. Such order shall specify the aggregate
principal amount of the Notes to be authenticated and the date on which the original issue of 

  
 26 

 
Notes is to be authenticated and, in the case of an issuance of Additional Notes pursuant to Section 2.05 of this Second Supplemental Indenture after the Issue Date, shall certify that such
issuance is in compliance with such Section 2.05 and Section 4.09 hereof. The Notes shall be issued initially in the form of Global Securities, for which The Depository Trust Company shall act as Depositary. Notes in the form of
Global Securities shall bear the legends set forth on the form of Note attached hereto. 
 Section 2.03. Outstanding Notes. 

Notes outstanding at any time are all Notes authenticated by the Trustee except for those canceled by it, those delivered to it for
cancellation and those described in this Section as not outstanding. Except as otherwise provided in TIA §316(a), a Note does not cease to be outstanding because the Company or an Affiliate of the Company holds the Note. 

If a Note is replaced pursuant to Section 306 of the Original Indenture, it ceases to be outstanding unless the Trustee and the Company
receive proof satisfactory to them that the replaced Note is held by a bona fide purchaser. 
 If the Paying Agent segregates and holds in
trust, in accordance with the Indenture, by 11:00 a.m. New York time, on a Redemption Date or other maturity date money sufficient to pay all principal, premium, if any, and interest payable on that date with respect to the Notes (or portions
thereof) to be redeemed or otherwise maturing, as the case may be, then on and after that date such Notes (or portions thereof) cease to be outstanding and interest on them ceases to accrue. 

Section 2.04. CUSIP Numbers. 
 The
Company in issuing the Notes may use “CUSIP” numbers and corresponding “ISINs” (if then generally in use) and, if so, the Trustee shall use “CUSIP” numbers and corresponding “ISINs” in notices of redemption as
a convenience to Holders; provided, however, that any such notice may state that no representation is made as to the correctness of such numbers either as printed on the Notes or as contained in any notice of a redemption and that reliance may be
placed only on the other identification numbers printed on the Notes, and any such redemption shall not be affected by any defect in or omission of such numbers. 

Section 2.05. Issuance of Additional Notes. 

The Company shall be entitled, subject to its compliance with Section 4.09 of this Second Supplemental Indenture, to issue Additional
Notes under the Indenture which shall have identical terms as the Initial Notes issued on the Issue Date, other than with respect to the date of issuance and issue price; provided, however, that no Additional Notes may be issued at a price that
would cause such Additional Notes to have “original issue discount” within the meaning of Section 1273 of the Code. The Initial Notes issued on the Issue Date and any Additional Notes shall be treated as a single class for all
purposes under the Indenture. 

  
 27 

 ARTICLE 3 

REDEMPTION AND PURCHASE 
 Section 3.01.
Redemption and Purchase. 
 The Notes shall be subject to redemption and purchase by the Company pursuant to the provisions of Article
Eleven of the Original Indenture and this Article 3. 
 Section 3.02. Optional Redemption. 

(a) Except as set forth in clause (b) of this Section 3.02 or in Section 4.15 of the Second Supplemental Indenture, the Company
shall not have the option to redeem the Notes prior to December 15, 2020. On and after December 15, 2020, the Company may on any one or more occasions redeem the Notes, in whole or in part, at a Redemption Price equal to 100% of the
principal amount thereof, plus accrued and unpaid interest, if any, to the Redemption Date (subject to the right of Holders of record on the relevant record date to receive interest due on an Interest Payment Date that is on or prior to the
Redemption Date). 
 (b) Notwithstanding the provisions of clause (a) of this Section 3.02, at any time prior to December 15,
2020, the Company may on any one or more occasions redeem the Notes, in whole or in part, at the Redemption Price of 100% of the principal amount thereof plus the Applicable Premium as of, plus accrued and unpaid interest, if any, to, the Redemption
Date (subject to the right of Holders of record on the relevant record date to receive interest due on an Interest Payment Date that is on or prior to the Redemption Date). 

The Company shall determine any Applicable Premium and shall notify the Trustee thereof in writing at least two Business Days in advance of the
payment date thereof. The Trustee shall have no responsibility for any calculation of any such amounts and may rely conclusively on the Company’s determinations thereof. 

Section 3.03. Mandatory Redemption. 

Except as set forth under Sections 4.10 and 4.15 hereof, the Company shall not be required to make mandatory redemption or sinking fund
payments with respect to the Notes or to repurchase the Notes at the option of the Holders. 
 Section 3.04. Offer to Purchase by Application of
Excess Proceeds. 
 In the event that, pursuant to Section 4.10 hereof, the Company shall be required to commence an offer to all
Holders to purchase Notes (an “Asset Sale Offer”), it shall follow the procedures specified below. 
 The Asset Sale Offer shall
remain open for a period of 20 Business Days following its commencement and no longer, except to the extent that a longer period is required by Applicable Law (the “Offer Period”). No later than five Business Days after the termination of
the Offer Period (the “Settlement Date”), the Company shall purchase and pay for the principal amount of Notes required to be purchased pursuant to Section 4.10 hereof (the “Offer Amount”) or, if less than the Offer Amount
has been tendered, all Notes validly tendered in response to the Asset Sale Offer. Payment for any Notes so purchased shall be made in the manner prescribed in the Notes. 

  
 28 

 Upon the commencement of an Asset Sale Offer, the Company shall send, by first class mail, a
notice to each of the Holders, with a copy to the Trustee. The notice shall contain all instructions and materials necessary to enable such Holders to tender Notes pursuant to the Asset Sale Offer. The Asset Sale Offer shall be made to all Holders.
The notice, which shall govern the terms of the Asset Sale Offer, shall state: 
 (a) that the Asset Sale Offer is being made
pursuant to this Section 3.04 and Section 4.10 hereof and the length of time the Asset Sale Offer shall remain open, including the time and date the Asset Sale Offer will terminate (the “Termination Date”); 

(b) the Offer Amount and the purchase price; 

(c) that any Note not tendered or accepted for payment shall continue to accrue interest; 

(d) that, unless the Company defaults in making such payment, any Note accepted for payment pursuant to the Asset Sale Offer
shall cease to accrue interest after the Settlement Date; 
 (e) that Holders electing to have a Note purchased pursuant to
an Asset Sale Offer may only elect to have all of such Note purchased and may not elect to have only a portion of such Note purchased; 

(f) that Holders electing to have a Note purchased pursuant to any Asset Sale Offer shall be required to surrender the Note,
with the form entitled “Option of Holder to Elect Purchase” on the reverse of the Note completed, to the Company or a Paying Agent at the address specified in the notice, before the Termination Date; 

(g) that Holders shall be entitled to withdraw their election if the Company or the Paying Agent, as the case may be, receives,
prior to the Termination Date, a telegram, telex, facsimile transmission or letter setting forth the name of the Holder, the principal amount of the Note the Holder delivered for purchase and a statement that such Holder is withdrawing his election
to have such Note purchased; 
 (h) that, if the aggregate principal amount of Notes surrendered by Holders, and Pari Passu
Indebtedness surrendered by holders or lenders, collectively, exceeds the amount the Company is required to repurchase, the Trustee shall select the Notes and Pari Passu Indebtedness to be purchased on a pro rata basis on the basis of the aggregate
principal amount of tendered Notes and Pari Passu Indebtedness (with such adjustments as may be deemed appropriate by the Trustee so that only Notes in denominations of equal to $2,000 or any integral $1,000 multiple in excess thereof, shall be
purchased); and 
 (i) that Holders whose Notes were purchased only in part shall be issued new Notes equal in principal
amount to the unpurchased portion of the Notes surrendered (or transferred by book-entry transfer). 

  
 29 

 If any of the Notes subject to an Asset Sale Offer is in the form of a Global Note, then the
Company shall modify such notice to the extent necessary to accord with the procedures of the Depository applicable to repurchases. 

Promptly after the Termination Date, the Company shall, to the extent lawful, accept for payment Notes or portions thereof tendered pursuant
to the Asset Sale Offer in the aggregate principal amount required by Section 4.10 hereof, and prior to the Settlement Date it shall deliver to the Trustee an Officers’ Certificate stating that such Notes or portions thereof were accepted
for payment by the Company in accordance with the terms of this Section 3.04 and Section 4.10 hereof. On the Settlement Date, the Company or the Paying Agent, as the case may be, shall mail or deliver to each tendering Holder an amount
equal to the purchase price of the Notes tendered by such Holder and accepted by the Company for purchase, and the Company shall issue a new Note, and the Trustee shall authenticate and mail or deliver such new Note to such Holder, in a principal
amount equal to any unpurchased portion of the Note surrendered. Any Note not so accepted shall be promptly mailed or delivered by the Company to the Holder thereof. The Company shall publicly announce the results of the Asset Sale Offer on or
before the Settlement Date. 
 ARTICLE 4 

COVENANTS 
 Except for
Section 1003, the provisions of Article Ten of the Original Indenture shall not apply to the Notes, and in lieu thereof the following provisions of this Article 4 shall apply to the Notes. 

Section 4.01. Payment of Notes. 
 The
Company shall pay or cause to be paid the principal of, premium, if any, and interest on the Notes on the dates and in the manner provided in the Notes. Principal, premium, if any, and interest shall be considered paid on the date due if the Paying
Agent, if other than the Company or a Guarantor, holds as of 11:00 a.m. New York time on the due date money deposited by the Company or a Guarantor in immediately available funds and designated for and sufficient to pay all principal, premium, if
any, and interest then due. 
 The Company shall pay interest (including post-petition interest in any proceeding under any Bankruptcy Law)
on overdue principal at the rate equal to the interest rate on the Notes to the extent lawful; it shall pay interest (including post-petition interest in any proceeding under any Bankruptcy Law) on overdue installments of interest (without regard to
any applicable grace period), at the same rate to the extent lawful. 
 Section 4.02. Maintenance of Office or Agency. 

The Company shall maintain an office or agency (which may be an office of the Trustee or an affiliate of the Trustee) where Notes may be
presented or surrendered for payment and where notices and demands to or upon the Company in respect of the Notes and the Indenture 

  
 30 

 
may be served. The Company shall give prompt written notice to the Trustee of the location, and any change in the location, of such office or agency. If at any time the Company shall fail to
maintain any such required office or agency or shall fail to furnish the Trustee with the address thereof, such presentations, surrenders, notices and demands may be made or served at the Corporate Trust Office of the Trustee. 

The Company may also from time to time designate one or more other offices or agencies where the Notes may be presented or surrendered for any
or all such purposes and may from time to time rescind such designations. Further, if at any time there shall be no such office or agency in the City of New York where the Notes may be presented or surrendered for payment, the Company shall
forthwith designate and maintain such an office or agency in the City of New York, in order that the Notes shall at all times be payable in the City of New York. The Company shall give prompt written notice to the Trustee of any such designation or
rescission and of any change in the location of any such other office or agency. 
 The Company hereby appoints the Trustee as Paying Agent
and designates the Corporate Trust Office of the Trustee as one such office or agency of the Company in accordance with Section 301 of the Original Indenture. 

Section 4.03. Reports. 
 (a)
Notwithstanding that the Company may not be subject to the reporting requirements of Section 13 or 15(d) of the Exchange Act, so long as any Notes are outstanding, the Company will file with the SEC (unless the SEC will not accept such a
filing) for public availability within the time period specified in the SEC’s rules and regulations under the Exchange Act and, within 10 Business Days of filing, or attempting to file, the same with the SEC, furnish to the Trustee and, upon
its request, to any of the Holders of the Notes: 
 (1) all quarterly and annual financial and other information with respect
to the Company and its Subsidiaries that would be required to be contained in a filing with the SEC on Forms 10-Q and 10-K if the Company were required to file such forms, including a “Management’s Discussion and Analysis of Financial
Condition and Results of Operations” and, with respect to the annual information only, a report thereon by the Company’s certified independent accountants; and 

(2) all current reports that would be required to be filed with the SEC on Form 8-K if the Company were required to file such
reports. 
 The Company’s filing of any such information, document or report with the Commission pursuant to its Electronic Data Gathering, Analysis
and Retrieval (or EDGAR) system or any successor thereto shall satisfy the reporting obligation described above. 
 The Company shall at all times comply
with TIA § 314(a). 
 (b) If the Company has designated any of its Subsidiaries as Unrestricted Subsidiaries, then the quarterly and
annual financial information required by paragraph (a) of this Section 4.03 shall include a reasonably detailed presentation, either on the face of the financial 

  
 31 

 
statements or in the footnotes to the financial statements and in Management’s Discussion and Analysis of Financial Condition and Results of Operations, of the financial condition and
results of operations of the Company and its Restricted Subsidiaries separate from the financial condition and results of operations of the Unrestricted Subsidiaries. 

Section 4.04. Compliance Certificate. 

(a) The Company shall deliver to the Trustee, within 90 days after the end of each fiscal year, an Officers’ Certificate stating that a
review of the activities of the Company and its Restricted Subsidiaries during the preceding fiscal year has been made under the supervision of the signing Officers with a view to determining whether the Company has kept, observed, performed and
fulfilled its obligations under the Indenture, and further stating, as to each such Officer signing such certificate, that to the best of his or her knowledge the Company has kept, observed, performed and fulfilled each and every covenant contained
in the Indenture and is not in default in the performance or observance of any of the terms, provisions and conditions of the Indenture (or, if a Default or Event of Default with respect to the Notes shall have occurred, describing all such Defaults
or Events of Default of which he or she may have knowledge and what action the Company is taking or proposes to take with respect thereto) and that to the best of his or her knowledge no event has occurred and remains in existence by reason of which
payments of interest on the Notes are prohibited or if such event has occurred, a description of the event and what action the Company is taking or proposes to take with respect thereto. 

(b) The Company shall, so long as any of the Notes are outstanding, deliver to the Trustee, forthwith upon any Officer becoming aware of any
Default or Event of Default with respect to the Notes, an Officers’ Certificate specifying such Default or Event of Default and what action the Company is taking or proposes to take with respect thereto. 

Section 4.05. Taxes 
 The Company shall
pay, and shall cause each of its Subsidiaries to pay, prior to delinquency, all material taxes, assessments, and governmental levies except such as are contested in good faith and by appropriate proceedings or where the failure to effect such
payment is not adverse in any material respect to the Holders of the Notes. 
 Section 4.06. Stay, Extension and Usury Laws. 

Each of the Company and each of the Guarantors covenants (to the extent that it may lawfully do so) that it shall not at any time insist upon,
plead, or in any manner whatsoever claim or take the benefit or advantage of, any stay, extension or usury law wherever enacted, now or at any time hereafter in force, that may affect the covenants or the performance of the Indenture; and the
Company (to the extent that it may lawfully do so) hereby expressly waives all benefit or advantage of any such law, and covenants that it shall not, by resort to any such law, hinder, delay or impede the execution of any power herein granted to the
Trustee, but shall suffer and permit the execution of every such power as though no such law has been enacted. 

  
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 Section 4.07. Limitation on Restricted Payments. 

 
 The Company will not, and will not permit any of its Restricted
Subsidiaries to, directly or indirectly: 
 (1) declare or pay any dividend or make any other payment or distribution on
account of the Company’s or any of its Restricted Subsidiaries’ Equity Interests (including, without limitation, any payment in connection with any merger or consolidation to which the Company or any of its Restricted Subsidiaries is a
party) or to the direct or indirect holders of the Company’s or any of its Restricted Subsidiaries’ Equity Interests in their capacity as such (other than dividends or distributions payable in Equity Interests (other than Disqualified
Stock) of the Company or payable to the Company or a Restricted Subsidiary of the Company); 
 (2) purchase, redeem or
otherwise acquire or retire for value (including, without limitation, in connection with any merger or consolidation to which the Company is a party) any Equity Interests of the Company or any direct or indirect parent of the Company; 

(3) make any principal payment on or with respect to, or purchase, redeem, defease or otherwise acquire or retire for value any
Indebtedness that is subordinated to the Notes or the Subsidiary Guarantees prior to any scheduled repayment or scheduled maturity, except a payment, purchase, redemption, defeasance or other acquisition of any such Indebtedness in anticipation of
satisfying a sinking fund obligation, principal installment or the Stated Maturity thereof, in each case, due within one year of the date of such payment, purchase, redemption, defeasance or other acquisition; or 

(4) make any Restricted Investment (all such payments and other actions set forth in these clauses (1) through
(4) above being collectively referred to as “Restricted Payments”), 
 unless, at the time of and after giving effect to such
Restricted Payment: 
 (1) no Default or Event of Default has occurred and is continuing or would occur as a consequence of
such Restricted Payment; 
 (2) the Company would, at the time of such Restricted Payment and after giving pro forma effect
thereto as if such Restricted Payment had been made at the beginning of the applicable four-quarter period, have been permitted to incur at least $1.00 of additional Indebtedness pursuant to the Fixed Charge Coverage Ratio test set forth in the
first paragraph of Section 4.09; and 
 (3) such Restricted Payment, together with the aggregate amount of all other
Restricted Payments made by the Company and its Restricted Subsidiaries after May 11, 2004 (excluding Restricted Payments permitted by clauses (2), (3), (4), (6), (7) and (8) of the next succeeding paragraph), is less than the
sum, without duplication, of: 

  
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 (a) 50% of the Consolidated Net Income of the Company for the period (taken as
one accounting period) from April 1, 2004 to the end of the Company’s most recently ended fiscal quarter for which internal financial statements are available at the time of such Restricted Payment (or, if such Consolidated Net Income for
such period is a deficit, less 100% of such deficit), plus 
 (b) 100% of the aggregate net cash proceeds received by the
Company (including the fair market value of any Additional Assets to the extent acquired in consideration of Equity Interests of the Company (other than Disqualified Stock)) since May 11, 2004 as a contribution to its common equity capital or
from the issue or sale of Equity Interests of the Company (other than Disqualified Stock) or from the issue or sale of convertible or exchangeable Disqualified Stock or convertible or exchangeable debt securities of the Company that have been
converted into or exchanged for such Equity Interests (other than Equity Interests (or Disqualified Stock or debt securities) sold to a Subsidiary of the Company), plus 

(c) to the extent that any Restricted Investment that was made after May 11, 2004 is sold for cash or otherwise liquidated
or repaid for cash, the lesser of (i) the cash return of capital with respect to such Restricted Investment (less the cost of disposition, if any) and (ii) the initial amount of such Restricted Investment, plus 

(d) to the extent that any Unrestricted Subsidiary of the Company is redesignated as a Restricted Subsidiary after May 11,
2004, the lesser of (i) the fair market value of the Company’s Investment in such Subsidiary as of the date of such redesignation or (ii) such fair market value as of the date on which such Subsidiary was originally designated as an
Unrestricted Subsidiary. 
 The preceding provisions will not prohibit: 

(1) the payment of any dividend or distribution or the consummation of any irrevocable redemption of debt that is subordinate
to the Notes, within 60 days after the date of declaration of such dividend or the delivery of any irrevocable notice of redemption, as the case may be, if the dividend, distribution or redemption payment on the date of declaration or the date of
the notice or redemption, as the case may be, would have complied with the provisions of the Indenture; 
 (2) the
redemption, repurchase, retirement, defeasance or other acquisition of any subordinated Indebtedness of the Company or any Guarantor or of any Equity Interests of the Company in exchange for, or out of the net cash proceeds of the substantially
concurrent sale (other than to a Subsidiary of the Company) of, Equity Interests of the Company (other than Disqualified Stock), with a sale being deemed substantially concurrent if such redemption, repurchase, retirement, defeasance or acquisition
occurs not more than 120 days after such sale; provided that the amount of 

  
 34 

 
any such net cash proceeds that are utilized for any such redemption, repurchase, retirement, defeasance or other acquisition will be excluded from clause (3)(b) of the preceding paragraph;

 (3) the defeasance, redemption, repurchase, retirement or other acquisition of subordinated Indebtedness of the Company or
any Guarantor with the net cash proceeds from an incurrence of, or in exchange for, Permitted Refinancing Indebtedness; 

(4) the payment of any dividend or distribution by a Restricted Subsidiary of the Company to the holders of its Equity
Interests on a pro rata basis; 
 (5) the repurchase, redemption or other acquisition or retirement for value of any Equity
Interests of the Company or any Restricted Subsidiary of the Company held by any current or former director, officer, employee or consultant of the Company or any of its Restricted Subsidiaries pursuant to any equity subscription agreement or plan,
stock option agreement or similar agreement or plan; provided that the aggregate price paid for all such repurchased, redeemed, acquired or retired Equity Interests may not exceed $2.0 million in any twelve-month period; 

(6) the acquisition of Equity Interests by the Company in connection with the exercise of stock options or stock appreciation
rights by way of cashless exercise; 
 (7) the purchase, repurchase, redemption, defeasance or other acquisition or
retirement for value of subordinated Indebtedness of the Company or any Restricted Subsidiary (a) at a purchase price not greater than 101.0% of the principal amount thereof (plus accrued and unpaid interest) in the event of a Change of Control
in accordance with provisions similar to Section 4.15 or (b) at a purchase price not greater than 100.0% of the principal amount thereof (plus accrued and unpaid interest) in accordance with provisions similar to Section 4.10;
provided that, prior to or simultaneously with such purchase, repurchase, redemption, defeasance or other acquisition or retirement, the Company has made the Change of Control Offer or Asset Sale Offer, as applicable, as provided in such covenants
with respect to the Notes and has completed the repurchase or redemption of all Notes validly tendered for payment in connection with such Change of Control Offer or Asset Sale Offer; 

(8) the payment of cash in lieu of fractional shares of Capital Stock in connection with any transaction otherwise permitted
under this Section 4.07; or 
 (9) other Restricted Payments in an aggregate amount since May 11, 2004 not to
exceed $25.0 million; 
 provided, however, that at the time of, and after giving effect to, any Restricted Payment permitted under the
preceding clause (9), no Default or Event of Default shall have occurred and be continuing or would be caused thereby. 
 The amount
of all Restricted Payments (other than cash) will be the fair market value on the date of the Restricted Payment of the asset(s) or securities proposed to be transferred or issued by the Company or such Restricted Subsidiary, as the case may be,
pursuant to the Restricted Payment. The fair market value of any assets or securities that are required to be 

  
 35 

 
valued by this covenant will be determined, in the case of amounts under $50.0 million, by an officer of the Company and, in the case of amounts of $50.0 million or more, by the Board of
Directors of the Company, whose determination shall be evidenced by a Board Resolution. Not later than the date of making any Restricted Payment (excluding any Restricted Payment described in the preceding clause (2), (3), (4), (6), (7) or
(8)) the Company will deliver to the Trustee an Officers’ Certificate stating that such Restricted Payment is permitted and setting forth the basis upon which the calculations required by this Section 4.07 were computed. For purposes
of determining compliance with this Section 4.07, in the event that a Restricted Payment meets the criteria of more than one of the categories of Restricted Payments described in the preceding clauses (1) through (9), or is entitled to be
made pursuant to the first paragraph of this Section 4.07, the Company will be permitted to divide or classify (or later divided or classify or reclassify in whole or in part in its sole discretion) such Restricted Payment in any manner that
complies with this Section 4.07. 
 Section 4.08. Limitation on Dividend and Other Payment Restrictions Affecting Subsidiaries. 

The Company will not, and will not permit any of its Restricted Subsidiaries to, directly or indirectly, create or permit to exist or become
effective any consensual encumbrance or restriction on the ability of any Restricted Subsidiary to: 
 (1) pay dividends or
make any other distributions on its Capital Stock to the Company or any of its Restricted Subsidiaries, or pay any Indebtedness or other obligations owed to the Company or any of its Restricted Subsidiaries; 

(2) make loans or advances to the Company or any of its Restricted Subsidiaries; or 

(3) transfer any of its properties or assets to the Company or any of its Restricted Subsidiaries. 

However, the preceding restrictions of this Section 4.08 will not apply to encumbrances or restrictions existing under or by reason of:

 (1) agreements governing Existing Indebtedness and Credit Facilities as in effect on the Issue Date and any amendments,
modifications, restatements, renewals, increases, supplements, refundings, replacements or refinancings of those agreements, provided that the amendments, modifications, restatements, renewals, increases, supplements, refundings, replacements or
refinancings are not materially more restrictive, taken as a whole, with respect to such encumbrances and restrictions than those contained in those agreements on the Issue Date as determined in good faith by the Company; 

(2) the Indenture, the Notes and the Subsidiary Guarantees; 

(3) Applicable Law; 

(4) any instrument governing Indebtedness or Capital Stock of a Person acquired by the Company or any of its Restricted
Subsidiaries as in effect at the time of 

  
 36 

 
such acquisition, which encumbrance or restriction is not applicable to any Person, or the properties or assets of any Person, other than the Person, or the property or assets of the Person, so
acquired, provided that, in the case of Indebtedness, such Indebtedness was permitted by the terms of the Indenture to be incurred, and any amendments, restatements, modifications, renewals, supplements, refundings, replacements or refinancings of
those agreements; provided that the amendments, restatements, modifications, renewals, supplements, refundings, replacements or refinancings are not materially more restrictive, taken as a whole, with respect to such encumbrances and restrictions
than those contained in those agreements on the date of such acquisition as determined in good faith by the Company; 
 (5)
customary non-assignment provisions in leases entered into in the ordinary course of business and consistent with past practices; 

(6) Capital Lease Obligations or purchase money obligations, in each case for property acquired in the ordinary course of
business that impose restrictions on that property of the nature described in clause (3) of the preceding paragraph; 

(7) any agreement for the sale or other disposition of a Restricted Subsidiary of the Company that restricts distributions
and/or transfers of properties and assets by that Restricted Subsidiary pending its sale or other disposition; 
 (8)
Permitted Refinancing Indebtedness, provided that the restrictions contained in the agreements governing such Permitted Refinancing Indebtedness are not materially more restrictive, taken as a whole, than those contained in the agreements governing
the Indebtedness being refinanced as determined in good faith by the Company; 
 (9) Liens securing Indebtedness otherwise
permitted to be incurred under the provisions of Section 4.12 hereof that limit the right of the debtor to dispose of the assets subject to such Liens; 

(10) provisions with respect to the disposition or distribution of assets or property in joint venture agreements, asset sale
agreements, stock sale agreements, agreements respecting Permitted Business Investments and other similar agreements entered into (a) in the ordinary course of business or (b) with the Company’s approval by its Board of Directors,
which limitation is applicable only to property or capital stock that are subject to such agreements; 
 (11) restrictions on
cash, Cash Equivalents or other deposits or net worth imposed by customers or suppliers under contracts entered into in the ordinary course of business; and 

(12) restrictions on the sale, lease or transfer of property or assets arising or agreed to in the ordinary course of business,
not relating to any Indebtedness, and that do not, individually or in the aggregate, detract from the value of property or assets of the Company or any Restricted Subsidiary in any manner material to the Company and the Restricted Subsidiaries taken
as a whole; and 

  
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 (13) Hedging Obligations permitted to be incurred under the covenants set forth
in Section 4.09 hereof. 
 Section 4.09. Limitation on Incurrence of Indebtedness and Issuance of Preferred Stock. 

The Company will not, and will not permit any of its Restricted Subsidiaries to, directly or indirectly, create, incur, issue, assume,
guarantee or otherwise become directly or indirectly liable, contingently or otherwise, with respect to (collectively, “incur”) any Indebtedness (including Acquired Debt), neither the Company nor any Guarantor will issue any Disqualified
Stock, and the Company will not permit any of its other Restricted Subsidiaries to issue any shares of preferred stock; provided, however, that the Company and any Guarantor may incur Indebtedness (including Acquired Debt) or issue Disqualified
Stock, if the Fixed Charge Coverage Ratio for the Company’s most recently ended four full fiscal quarters for which internal financial statements are available immediately preceding the date on which such additional Indebtedness is incurred or
such Disqualified Stock is issued would have been at least 2.0 to 1.0, determined on a pro forma basis (including a pro forma application of the net proceeds therefrom), as if the additional Indebtedness had been incurred or Disqualified Stock had
been issued, as the case may be, at the beginning of such four-quarter period. 
 The first paragraph of this Section 4.09 will not
prohibit the incurrence of any of the following items of Indebtedness (collectively, “Permitted Debt”): 
 (1) the
incurrence by the Company or any of its Restricted Subsidiaries of additional Indebtedness (including letters of credit) under one or more Credit Facilities in an aggregate principal amount at any one time outstanding under this clause
(1) (with letters of credit being deemed to have a principal amount equal to the maximum potential liability of the Company and its Subsidiaries thereunder) not to exceed an amount equal to the greater of (a) $1.25 billion or (b) 30%
of ACNTA as of the date of such incurrence; 
 (2) the incurrence by the Company or any of its Restricted Subsidiaries of the
Existing Indebtedness; 
 (3) the incurrence by the Company and the Guarantors of Indebtedness represented by the Notes
issued and sold on the Issue Date and the related Subsidiary Guarantees issued on the Issue Date; 
 (4) the incurrence by
the Company or any of its Restricted Subsidiaries of Indebtedness represented by Capital Lease Obligations, mortgage financings or purchase money obligations, in each case, incurred for the purpose of financing all or any part of the purchase price
or cost of design, construction, installation or improvement of property, plant or equipment used in the business of the Company or such Restricted Subsidiary, in an aggregate principal amount at any time outstanding, including all Permitted
Refinancing Indebtedness incurred to renew, refund, refinance, replace, defease or discharge any Indebtedness incurred pursuant to this clause (4), not to exceed the greater of (a) $75.0 million or (b) 1.0% of ACNTA as of the date of such
incurrence at any time outstanding; 

  
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 (5) the incurrence by the Company or any of its Restricted Subsidiaries of
Permitted Refinancing Indebtedness in exchange for, or the net proceeds of which are used to refund, refinance or replace Indebtedness (other than intercompany Indebtedness) that was permitted by the Indenture to be incurred under the first
paragraph of this Section 4.09 or clause (2) or (3) of this paragraph or this clause (5); 
 (6) the
incurrence by the Company or any of its Restricted Subsidiaries of intercompany Indebtedness between or among the Company and any of its Restricted Subsidiaries; provided, however, that: 

(a) if the Company is the obligor on such Indebtedness and a Guarantor is not the obligee, such Indebtedness must be expressly
subordinated to the prior payment in full in cash of all Obligations with respect to the Notes, or if a Guarantor is the obligor on such Indebtedness and neither the Company nor another Guarantor is the obligee, such Indebtedness must be expressly
subordinated to the prior payment in full in cash of all Obligations with respect to the Subsidiary Guarantee of such Guarantor; and 

(b) (i) any subsequent issuance or transfer of Equity Interests that results in any such Indebtedness being held by a
Person other than the Company or a Restricted Subsidiary of the Company and (ii) any sale or other transfer of any such Indebtedness to a Person that is neither the Company nor a Restricted Subsidiary of the Company will be deemed, in each
case, to constitute an incurrence of such Indebtedness by the Company or such Restricted Subsidiary, as the case may be, that was not permitted by this clause (6); 

(7) the incurrence by the Company or any of its Restricted Subsidiaries of Hedging Obligations; 

(8) the guarantee by the Company or any of the Guarantors of Indebtedness of the Company or any Guarantor that was permitted to
be incurred by another provision of this Section 4.09; 
 (9) the incurrence by the Company or any of its Restricted
Subsidiaries of obligations relating to net gas balancing positions arising in the ordinary course of business and consistent with past practice; 

(10) the incurrence by the Company’s Unrestricted Subsidiaries of Non-Recourse Debt, provided, however, that if any such
Indebtedness ceases to be Non-Recourse Debt of an Unrestricted Subsidiary, such event will be deemed to constitute an incurrence of Indebtedness by a Restricted Subsidiary of the Company that was not permitted by this clause (10); 

(11) the incurrence by the Company or any of its Restricted Subsidiaries of Indebtedness in respect of bid, performance, surety
and similar bonds issued for the account of the Company and any of its Restricted Subsidiaries in the ordinary course of business, including guarantees and obligations of the Company and any of its Restricted Subsidiaries with respect to letters of
credit supporting such obligations (in each case other than an obligation for money borrowed); 

  
 39 

 (12) the incurrence by the Company or any of its Restricted Subsidiaries of
Indebtedness arising from agreements of the Company or any of its Restricted Subsidiaries providing for indemnification, adjustment of purchase price or similar obligations, in each case, incurred or assumed in connection with the disposition of any
business, assets or Capital Stock of a Subsidiary, provided that the maximum aggregate liability in respect of all such Indebtedness shall at no time exceed the gross proceeds actually received by the Company and its Restricted Subsidiaries in
connection with such disposition; 
 (13) Indebtedness arising from the honoring by a bank or other financial institution of
a check, draft or similar instrument inadvertently (except in the case of daylight overdrafts) drawn against insufficient funds in the ordinary course of business; provided, however, that such Indebtedness is promptly extinguished; 

(14) Indebtedness arising in connection with endorsement of instruments for deposit in the ordinary course of business; 

(15) Indebtedness owed on a short-term basis to banks and other financial institutions incurred in the ordinary course of
business of the Company and any Restricted Subsidiary with such banks or financial institutions that arises in connection with ordinary banking arrangements to manage cash balances of the Company and any Restricted Subsidiary; 

(16) the incurrence by the Company or any of its Restricted Subsidiaries of Acquired Debt in connection with a transaction
meeting either of the financial tests set forth in clause (4) under Section 5.01 hereof; and 
 (17) the incurrence
by the Company or any of its Restricted Subsidiaries of additional Indebtedness in an aggregate principal amount (or accreted value, as applicable) at any time outstanding, not to exceed the greater of (a) $250.0 million or (b) 2.5% of
ACNTA as of the date of incurrence. 
 For purposes of determining compliance with this Section 4.09, in the event that an item of
Indebtedness (including Acquired Debt) meets the criteria of more than one of the categories of Permitted Debt described in clauses (1) through (17) above, or is entitled to be incurred pursuant to the first paragraph of this
Section 4.09, the Company will be permitted to divide and classify (or later divide, classify, re-divide or reclassify in whole or in part in its sole discretion) such item of Indebtedness in any manner that complies with this covenant, except
that any indebtedness under Credit Facilities on the Issue Date (after giving effect to the offering of Initial Notes and the application of the proceeds thereof contemplated by the prospectus relating to such offering) shall be considered incurred
under the first paragraph of this Section 4.09. 
 The accrual of interest, the accretion or amortization of original issue discount,
the payment of interest on any Indebtedness in the form of additional Indebtedness with the same terms, and the payment of dividends on Disqualified Stock in the form of additional shares of the same class of Disqualified Stock will not be deemed to
be an incurrence of Indebtedness or an issuance of Disqualified Stock for purposes of this Section 4.09; provided, in each such case, that the amount thereof is included in Fixed Charges of the Company as accrued. Notwithstanding any other
provision of this covenant, the maximum amount of Indebtedness that the Company or any Restricted Subsidiary may incur pursuant to this covenant shall not be deemed exceeded solely as a result of fluctuations in exchange rates or currency values.

  
 40 

 Section 4.10. Limitation on Asset Sales. 

The Company will not, and will not permit any of its Restricted Subsidiaries to, consummate an Asset Sale unless: 

(1) the Company (or the Restricted Subsidiary, as the case may be) receives consideration at the time of the Asset Sale at
least equal to the fair market value of the assets or Equity Interests issued or sold or otherwise disposed of; 
 (2) the
fair market value is determined by the Company’s Board of Directors and evidenced by a resolution of the Board of Directors set forth in an Officers’ Certificate delivered to the Trustee; and 

(3) at least 75% of the consideration received in the Asset Sale by the Company or such Restricted Subsidiary is in the form of
cash or Cash Equivalents. For purposes of this clause (3) of Section 4.10 only, each of the following will be deemed to be cash or Cash Equivalents: 

(a) any liabilities, as shown on the Company’s or such Restricted Subsidiary’s most recent balance sheet, of the
Company or any Subsidiary (other than contingent liabilities and liabilities that are by their terms subordinated to the Notes or any Subsidiary Guarantee) that are assumed by the transferee of any such assets pursuant to a novation agreement that
releases the Company or such Subsidiary from further liability; 
 (b) any securities, notes or other obligations received by
the Company or any such Restricted Subsidiary from such transferee that are converted by the Company or such Subsidiary into cash within 180 days of the receipt thereof, to the extent of the cash received in that conversion; and 

(c) with respect to any Asset Sale of oil and natural gas properties where the Company or such Restricted Subsidiary retains an
interest in such property, the aggregate costs and expenses of the Company or such Restricted Subsidiary related to the exploration, development, completion or production of such properties and activities related thereto which the transferee (or an
Affiliate thereof) agrees to pay. 
 Within 360 days after the receipt of any Net Proceeds from an Asset Sale, the Company or any such
Restricted Subsidiary may apply those Net Proceeds at its option to any combination of the following: 
 (I) to prepay, repay, redeem or
repurchase any Indebtedness of the Company or a Guarantor (other than intercompany Indebtedness, Capital Stock or Indebtedness that is subordinated to the Notes or the Subsidiary Guarantees) or any Indebtedness of a Restricted Subsidiary that is not
a Guarantor (other than intercompany Indebtedness); 

  
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 (II) to acquire all or substantially all of the properties or assets of one or more other Persons
primarily engaged in the Oil and Gas Business, and, for this purpose, a division or line of business of a Person shall be treated as a separate Person; 

(III) to acquire a majority of the Voting Stock of one or more other Persons primarily engaged in the Oil and Gas Business; 

(IV) to make one or more capital expenditures; or 

(V) to acquire other long-term assets that are used or useful in the Oil and Gas Business. 

Pending the final application of any Net Proceeds, the Company or any such Restricted Subsidiary may temporarily reduce revolving credit
borrowings or otherwise invest the Net Proceeds in any manner that is not prohibited by the Indenture. Any Net Proceeds from Asset Sales that are not applied or invested as provided in the preceding paragraph will constitute “Excess
Proceeds.” 
 On the 361st day after the Asset Sale (or, at the Company’s option, any earlier date), if the aggregate amount of
Excess Proceeds then exceeds $50.0 million, the Company will make an Asset Sale Offer to all Holders of Notes, and to all holders of Pari Passu Indebtedness then outstanding, to purchase the maximum principal amount of Notes and such Pari Passu
Indebtedness that may be purchased out of the Excess Proceeds, pursuant to the terms in Section 3.04 hereof and this Section 4.10. The offer price in any Asset Sale Offer will be equal to 100% of the principal amount plus accrued and
unpaid interest, if any, to the Settlement Date, subject to the right of Holders of record on the relevant record date to receive interest due on an Interest Payment Date that is on or prior to the Settlement Date, and will be payable in cash. If
any Excess Proceeds remain after consummation of an Asset Sale Offer, the Company may use those Excess Proceeds for any purpose not otherwise prohibited by the Indenture. If the aggregate principal amount of Notes and Pari Passu Indebtedness
tendered in such Asset Sale Offer exceeds the amount of Excess Proceeds, the Trustee will select the Notes and such Pari Passu Indebtedness to be purchased on a pro rata basis (with such adjustments as may be deemed appropriate by the Company so
that only Notes in denominations of $2,000 or any integral multiple of $1,000 in excess thereof, will be purchased). Upon completion of each Asset Sale Offer, the amount of Excess Proceeds will be reset at zero. 

The Company will comply with the requirements of Rule 14e-1 under the Exchange Act and any other securities laws and regulations thereunder to
the extent those laws and regulations are applicable in connection with each repurchase of Notes pursuant to an Asset Sale Offer. To the extent that the provisions of any securities laws or regulations conflict with the provisions of this
Section 4.10, the Company will comply with the applicable securities laws and regulations and will not be deemed to have breached its obligations under such provisions by virtue of such compliance. 

  
 42 

 Section 4.11. Limitation on Transactions with Affiliates. 

The Company will not, and will not permit any of its Restricted Subsidiaries to, make any payment to, or sell, lease, transfer or otherwise
dispose of any of its properties or assets to, or purchase any property or assets from, or enter into or make or amend any transaction, contract, agreement, understanding, loan, advance or guarantee with, or for the benefit of, any Affiliate (each,
an “Affiliate Transaction”) involving aggregate consideration in excess of $1.0 million, unless: 
 (1) the
Affiliate Transaction is on terms that are not materially less favorable to the Company or the relevant Restricted Subsidiary than those that would have been obtained in a comparable transaction by the Company or such Restricted Subsidiary with an
unrelated Person or, if in the good faith judgment of the Company’s Board of Directors, no comparable transaction is available with which to compare such Affiliate Transaction, such Affiliate Transaction is otherwise fair to the Company or the
relevant Restricted Subsidiary from a financial point of view; and 
 (2) the Company delivers to the Trustee: 

(a) with respect to any Affiliate Transaction or series of related Affiliate Transactions involving aggregate consideration in
excess of $20.0 million, an Officers’ Certificate certifying that such Affiliate Transaction complies with this Section 4.11; and 

(b) with respect to any Affiliate Transaction or series of related Affiliate Transactions involving aggregate consideration in
excess of $50.0 million, an Officers’ Certificate certifying that such Affiliate Transaction has been approved by a majority of the disinterested members of the Board of Directors. 

The following items will not be deemed to be Affiliate Transactions and, therefore, will not be subject to the provisions of the prior
paragraph of this Section 4.11: 
 (1) any employment, severance or consulting agreement or other compensation
agreement, arrangement or plan, or any amendment thereto, entered into by the Company or any of its Restricted Subsidiaries in the ordinary course of business; 

(2) transactions between or among any of the Company and its Restricted Subsidiaries; 

(3) transactions with a Person that is an Affiliate of the Company solely because the Company owns an Equity Interest in such
Person; 
 (4) payment of reasonable directors’ fees, consulting fees and other benefits to persons who are not
otherwise Affiliates of the Company; 
 (5) provision of officers’ and directors’ indemnification and insurance in
the ordinary course of business to the extent permitted by law; 
 (6) sales of Equity Interests (other than Disqualified
Stock) to Affiliates of the Company; 

  
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 (7) Permitted Investments and Restricted Payments that are permitted by
Section 4.07 hereof; 
 (8) any transaction in which the Company or its Restricted Subsidiaries, as the case may be,
deliver to the Trustee a letter from an accounting, appraisal or investment banking firm of national standing stating that such transaction is fair to the Company or its Restricted Subsidiary from a financial point of view or that such transaction
meets the requirements of clause (1) of the initial paragraph above; 
 (9) transactions with Unrestricted Subsidiaries,
Affiliates, customers, clients, suppliers or purchasers or sellers of goods or services, or lessors or lessees of property, in each case in the ordinary course of business and otherwise in compliance with the terms of the Indenture which are, in the
aggregate (taking into account all the costs and benefits associated with such transactions) materially no less favorable to the Company or its Restricted Subsidiaries than those that would have been obtained in a comparable transaction by the
Company or such Restricted Subsidiary with an unrelated person, in the good faith determination of the Company’s Board of Directors, or are on terms at least as favorable as might reasonably have been obtained at such time from an unaffiliated
party; and 
 (10) transactions between the Company or any of its Restricted Subsidiaries and any Person, a director of which
is also a director of the Company or any direct or indirect parent of the Company; provided, however, that such director abstains from voting as a director of the Company or such direct or indirect parent, as the case may be, on any matter involving
such other Person. 
 Section 4.12. Limitation on Liens. 

The Company will not and will not permit any of its Restricted Subsidiaries to, create, incur, assume or otherwise cause or suffer to exist or
become effective any Lien of any kind (other than Permitted Liens) securing Indebtedness or Attributable Debt upon any of their property or assets, now owned or hereafter acquired, unless the Notes or any Subsidiary Guarantee of such Restricted
Subsidiary, as applicable, is secured on an equal and ratable basis (or on a senior basis to, in the case of obligations subordinated in right of payment to the Notes or such Subsidiary Guarantee, as the case may be) with the obligations so secured
until such time as such obligations are no longer secured by a Lien. 
 Section 4.13. Additional Subsidiary Guarantees. 

If the Company or any of its Restricted Subsidiaries acquires or creates another Material Domestic Subsidiary after the Issue Date, or if any
Restricted Subsidiary that is not already a Guarantor guarantees any other Indebtedness of the Company in a principal amount in excess of $1.0 million after such date, then in either case that Subsidiary will become a Guarantor by executing a
supplemental indenture substantially in the form of Exhibit B hereto and delivering it to the Trustee within 20 Business Days of the date on which it was acquired or created or 

  
 44 

 
guaranteed such Indebtedness of the Company, as the case may be, together with any Opinion of Counsel described in Section 903 of the Original Indenture; provided, however, that (a) the
foregoing shall not apply to Subsidiaries of the Company that have properly been designated as Unrestricted Subsidiaries in accordance with the Indenture for so long as they continue to constitute Unrestricted Subsidiaries, and (b) Whiting
Programs, Inc. shall not be required to become a Guarantor unless it guarantees Indebtedness of the Company in a principal amount in excess of $1.0 million other than the 2014 Notes that are outstanding on the Issue Date. 

Section 4.14. Corporate Existence. 

Except as otherwise permitted pursuant to the terms hereof (including consolidation and merger permitted by Section 5.01 hereof), the
Company shall do or cause to be done all things necessary to preserve and keep in full force and effect its corporate existence, and the corporate, partnership or other existence of each of its Restricted Subsidiaries, in accordance with the
respective organizational documents (as the same may be amended from time to time) of the Company or any such Restricted Subsidiary; provided, however, that the Company shall not be required to preserve the existence of any of its Restricted
Subsidiaries if the Company shall determine that the preservation thereof is no longer desirable in the conduct of the business of the Company and its Restricted Subsidiaries taken as a whole and that the loss thereof is not adverse in any material
respect to the Holders of the Notes. 
 Section 4.15. Offer to Repurchase Upon Change of Control. 

(1) Within 30 days following the occurrence of a Change of Control, the Company shall make an offer (a “Change of Control
Offer”) to repurchase all or any part (equal to $2,000 or any integral multiple of $1,000 in excess thereof) of each Holder’s Notes at a purchase price (the “Change of Control Payment”) in cash equal to 101% of the aggregate
principal amount of Notes repurchased, plus accrued and unpaid interest, if any, thereon to the date of settlement (the “Change of Control Settlement Date”), subject to the right of Holders of record on the relevant record date to receive
interest due on an Interest Payment Date that is on or prior to the Change of Control Settlement Date. Within 30 days following a Change of Control, the Company shall mail a notice of the Change of Control Offer to each Holder and the Trustee
describing the transaction that constitutes the Change of Control and stating: 
 (a) that the Change of Control Offer is
being made pursuant to this Section 4.15 and that all Notes validly tendered and not withdrawn will be accepted for payment; 

(b) the purchase price and the purchase date, which shall be no earlier than 30 days but no later than 60 days from the date
such notice is mailed, or in the case of a notice mailed in advance of a Change of Control, no earlier than 30 days and no later than 60 days from the date of such Change of Control (the “Change of Control Purchase Date”); 

  
 45 

 (c) that the Change of Control Offer will expire as of the time specified in such
notice on the Change of Control Purchase Date and that the Company shall pay the Change of Control Purchase Price for all Notes purchased as of the Change of Control Purchase Date promptly thereafter on the Change of Control Settlement Date; 

(d) that any Note not tendered will continue to accrue interest; 

(e) that, unless the Company defaults in the payment of the Change of Control Payment, all Notes accepted for payment pursuant
to the Change of Control Offer shall cease to accrue interest after the Change of Control Settlement Date; 
 (f) that
Holders electing to have any Notes purchased pursuant to a Change of Control Offer will be required to surrender the Notes, properly endorsed for transfer, together with the form entitled “Option of Holder to Elect Purchase” on the reverse
of the Notes completed and such customary documents as the Company may reasonably request, to the Paying Agent at the address specified in the notice prior to the termination of the Change of Control Offer on the Change of Control Purchase Date;

 (g) that Holders will be entitled to withdraw their election if the Paying Agent receives, prior to the termination of the
Change of Control Offer, a telegram, telex, facsimile transmission or letter setting forth the name of the Holder, the principal amount of Notes delivered for purchase, and a statement that such Holder is withdrawing its election to have the Notes
purchased; and 
 (h) that Holders whose Notes are being purchased only in part will be issued new Notes equal in principal
amount to the unpurchased portion of the Notes surrendered, which unpurchased portion must be equal to $2,000 in principal amount or any integral multiple of $1,000 in excess thereof. 

If any of the Notes subject to a Change of Control Offer is in the form of a Global Note, then the Company shall modify such notice to the
extent necessary to accord with the procedures of the Depository applicable to repurchases. Further, the Company shall comply with the requirements of Rule 14e-1 under the Exchange Act and any other securities laws and regulations thereunder to the
extent such laws and regulations are applicable in connection with the repurchase of Notes as a result of a Change of Control. To the extent that the provisions of any securities laws or regulations conflict with the provisions of this
Section 4.15, the Company will comply with the applicable securities laws and regulations and will not be deemed to have breached its obligations under such provisions by virtue of such compliance. 

(2) On the Change of Control Settlement Date, the Company shall, to the extent lawful, accept for payment all Notes or portions
thereof ($2,000 or any integral $1,000 multiple in excess thereof) properly tendered pursuant to the Change of Control Offer. Promptly thereafter on the Change of Control Settlement Date the Company shall: 

  
 46 

 (a) deposit with the Paying Agent by 11:00 a.m., New York City time, an amount
equal to the Change of Control Payment in respect of all Notes or portions thereof so tendered; and 
 (b) deliver or cause
to be delivered to the Trustee the Notes so accepted together with an Officers’ Certificate stating the aggregate principal amount of Notes or portions of Notes being purchased by the Company. 

On the Change of Control Settlement Date, the Paying Agent shall mail to each Holder of Notes properly tendered the Change of Control Payment
for such Notes (or, if all the Notes are then in global form, make such payment through the facilities of the Depository) and the Trustee shall authenticate and mail (or cause to be transferred by book entry) to each Holder a new Note equal in
principal amount to any unpurchased portion of the Notes surrendered, if any; provided, however, that each such new Note will be in a principal amount of $2,000 or any integral multiple of $1,000 in excess thereof. The Company shall publicly
announce the results of the Change of Control Offer on or as soon as practicable after the Change of Control Settlement Date. 

(c) The Change of Control provisions described above shall be applicable whether or nor any other provisions of the Indenture
are applicable. 
 (d) [Intentionally Omitted.] 

(e) The Company shall not be required to make a Change of Control Offer following a Change of Control (1) if a third party
makes the Change of Control Offer in the manner, at the time and otherwise in compliance with the requirements set forth in the Indenture applicable to a Change of Control Offer made by the Company and purchases all Notes properly tendered and not
withdrawn under such Change of Control Offer or (2) notice of redemption has been given pursuant to Section 3.02 hereof, unless and until there is a default in payment of the applicable Redemption Price. Notwithstanding anything to the
contrary contained herein, a Change of Control Offer by the Company or a third party may be made in advance of a Change of Control, and conditioned upon the occurrence of a Change in Control, if a definitive agreement is in place for the Change of
Control at the time the Change of Control Offer is made. 
 (3) In the event that Holders of Notes of not less than 90% of
the aggregate principal amount of the outstanding Notes accept a Change of Control Offer and the Company purchases all of the Notes held by such holders, the Company will have the right, upon not less than 30 nor more than 60 days, prior notice
given not more than 30 days following the purchase pursuant to the Chang of Control Offer, to redeem all of the Notes that remain outstanding following such purchase at a purchase price equal to the Change of Control Payment plus, to the extent not
included in the Change of Control Payment, accrued and unpaid interest on the Notes that remain outstanding, if any, to the Change of Control Settlement Date, subject to the right of Holders of record on the relevant record date to receive interest
due on an interest payment date that is on or prior to the Change of Control Settlement Date. Any such redemption shall be effected in accordance with Article Eleven of the Original Indenture. 

  
 47 

 Section 4.16. No Inducements. 

The Company shall not, and the Company shall not permit any of its Subsidiaries, either directly or indirectly, to pay (or cause to be paid)
any consideration, whether by way of interest, fee or otherwise, to any Beneficial Owner or Holder of the Notes for or as an inducement to any consent to any waiver, amendment or supplement of any terms or provisions of the Indenture or the Notes,
unless such consideration is offered to be paid (or agreed to be paid) to all Beneficial Owners and Holders of the Notes which so consent in the time frame set forth in the solicitation documents relating to such consent. 

Section 4.17. Designation of Restricted and Unrestricted Subsidiaries. 

The Board of Directors of the Company may designate any Restricted Subsidiary of the Company to be an Unrestricted Subsidiary if that
designation would not cause a Default. If a Restricted Subsidiary of the Company is designated as an Unrestricted Subsidiary, the aggregate fair market value of all outstanding Investments owned by the Company and its Restricted Subsidiaries in the
Subsidiary properly designated will be deemed to be an Investment made as of the time of the designation and will reduce the amount available for Restricted Payments under the first paragraph of Section 4.07 hereof or represent Permitted
Investments, as determined by the Company. That designation shall only be permitted if the Investment would be permitted at that time and if the Subsidiary so designated otherwise meets the definition of an Unrestricted Subsidiary. 

The Board of Directors of the Company may at any time designate any Unrestricted Subsidiary to be a Restricted Subsidiary of the Company;
provided that such designation will be deemed to be an incurrence of Indebtedness by a Restricted Subsidiary of the Company of any outstanding Indebtedness of such Unrestricted Subsidiary and such designation will only be permitted if (1) such
Indebtedness is permitted under Section 4.09 hereof, calculated on a pro forma basis as if such designation had occurred at the beginning of the four-quarter reference period, and (2) no Default or Event of Default would be in existence
following such designation. 
 Section 4.18. Covenant Termination. 

If at any time (a) the rating assigned to the Notes by both S&P and Moody’s is an Investment Grade Rating and (b) no Default
has occurred and is continuing under this Indenture, then upon delivery by the Company to the Trustee of an Officers’ Certificate to the foregoing effect, the Company and its Restricted Subsidiaries will no longer be subject to the following
provisions of this Indenture: Sections 4.07, 4.08, 4.09, 4.10 or 4.11 or clause (d) of Section 5.01. The Company and its Restricted Subsidiaries will remain subject to all other provisions of the Indenture. 

ARTICLE 5 
 SUCCESSORS 

The provisions of Article Eight of the Original Indenture shall not apply to the Notes, and in lieu thereof the following provisions of this
Article 5 shall apply to the Notes. 

  
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 Section 5.01. Merger, Consolidation, or Sale of Assets. 

The Company shall not, directly or indirectly, (1) consolidate or merge with or into another Person (whether or not the Company is the
surviving entity), or (2) sell, assign, transfer, lease, convey or otherwise dispose of all or substantially all of the properties or assets of the Company and its Restricted Subsidiaries taken as a whole, in one or more related transactions
to, another Person, unless: 
 (a) either (1) the Company is the surviving corporation or (2) the Person formed by
or surviving any such consolidation or merger (if other than the Company) or to which such sale, assignment, transfer, lease, conveyance or other disposition shall have been made is an entity organized or existing under the laws of the United
States, any state of the United States or the District of Columbia; provided that if the Company or such other Person is not a corporation, a Restricted Subsidiary of the Company that is a corporation shall assume by supplemental indenture all
obligations of the Company under the Notes and the Indenture as a co-issuer of the Notes; 
 (b) the Person formed by or
surviving any such consolidation or merger (if other than the Company) or the Person to which such sale, assignment, transfer, lease, conveyance or other disposition shall have been made assumes all the obligations of the Company under the Notes and
the Indenture pursuant to a supplemental indenture or other agreement in a form reasonably satisfactory to the Trustee; 

(c) immediately after such transaction no Default or Event of Default exists; 

(d) the Company or the Person formed by or surviving any such consolidation or merger (if other than the Company), or to which
such sale, assignment, transfer, lease, conveyance or other disposition shall have been made will, at the time of such transaction and after giving pro forma effect thereto and any related financing transaction as if the same had occurred at the
beginning of the applicable four-quarter period, either (a) be permitted to incur at least $1.00 of additional Indebtedness pursuant to the Fixed Charge Coverage Ratio test set forth in the first paragraph of Section 4.09 hereof or
(b) have a Fixed Charge Coverage Ratio that is equal to or greater than the Fixed Charge Coverage Ratio of the Company immediately prior to such consolidation, merger, sale, assignment, transfer, lease, conveyance or other disposition; and 

(e) the Company shall have delivered to the Trustee an Officers’ Certificate and an Opinion of Counsel, each stating that
such consolidation, merger or disposition and such supplemental indenture (if any) comply with the Indenture; 
 provided, however, that
(i) this Section 5.01 shall not apply to any sale, assignment, transfer, lease, conveyance or other disposition of assets between or among the Company and its Restricted Subsidiaries and (ii) clauses (c) and (d) hereof shall
not apply to any merger or consolidation of the Company (a) with or into one of its Restricted Subsidiaries for any purpose or (b) with or into an Affiliate solely for the purpose of reincorporation of the Company in another
jurisdiction. 

  
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 Section 5.02. Successor Entity Substituted. 

Upon any consolidation or merger, or any sale, assignment, transfer, lease, conveyance or other disposition of all or substantially all of the
properties or assets of the Company and its Restricted Subsidiaries taken as a whole in accordance with Section 5.01 hereof, the successor entity formed by such consolidation or into or with which the Company is merged or to which such sale,
assignment, transfer, lease, conveyance or other disposition is made shall succeed to, and may exercise every right and power of, the Company under the Indenture with the same effect as if such successor entity had been named as the Company herein
and shall be substituted for the Company (so that from and after the date of such consolidation, merger, sale, assignment, transfer, lease, conveyance or other disposition, the provisions of the Indenture referring to the “Company” shall
refer instead to the successor entity and not to the Company); and thereafter, if the Company is dissolved following a transfer of all or substantially all of the properties or assets of the Company and its Restricted Subsidiaries taken as a whole
in accordance with the Indenture, the Company shall be discharged and released from all obligations and covenants under the Indenture and the Notes. The Trustee shall enter into a supplemental indenture to evidence the succession and substitution of
such successor Person and such discharge and release of the Company. 
 ARTICLE 6 

DEFAULTS AND REMEDIES 
 Section 6.01. Events of
Default. 
 In accordance with Section 301(19) of the Original Indenture, Section 501 of the Original Indenture is hereby
amended to read in its entirety as follows with respect to the Notes: 
 “An ‘Event of Default’ occurs if one of the
following shall have occurred and be continuing (whatever the reason for such Event of Default and whether it shall be involuntary or be effected by operation of law): 

(1) the Company defaults in the payment when due of interest with respect to the Notes, and such default continues for a period
of 30 days; 
 (2) the Company defaults in the payment of the principal of or premium, if any, on the Notes when due at its
Stated Maturity, upon optional redemption, upon required repurchase, upon declaration or otherwise; 
 (3) the Company fails
to comply with the provisions of Section 4.07, 4.09, 4.10, 4.15 or 5.01 of the Second Supplemental Indenture; 
 (4) the
Company or a Guarantor fails to comply with any other covenant or other agreement in the Indenture or the Notes for 60 days (or 180 days in the case of a Reporting Failure) after notice to the Company by the Trustee or the Holders of at least 25% in
principal amount of the Notes then outstanding of such failure; 

  
 50 

 (5) a default occurs under any mortgage, indenture or instrument under which
there may be issued or by which there may be secured or evidenced any Indebtedness for money borrowed by the Company or any of its Restricted Subsidiaries (or the payment of which is guaranteed by the Company or any of its Restricted Subsidiaries),
whether such Indebtedness or guarantee now exists or is created after the Issue Date, if such default: 
 (a) is caused by a
failure to pay principal of, or interest or premium, if any, on such Indebtedness prior to the expiration of any grace period provided in such Indebtedness (a “Payment Default”); or 

(b) results in the acceleration of such Indebtedness prior to its Stated Maturity 

and, in each case, the principal amount of any such Indebtedness, together with the principal amount of any other such Indebtedness under which
there has been a Payment Default or the maturity of which has been so accelerated, aggregates $50.0 million or more; provided, that if any such default is cured or waived or any such acceleration is rescinded, or such Indebtedness is repaid, within
a period of 10 days from the continuation of such default beyond the applicable grace period or the occurrence of such acceleration, as the case may be, such Event of Default under the Indenture and any consequential acceleration of the Notes shall
be automatically rescinded; 
 (6) the Company or any of its Significant Subsidiaries fails to pay final judgments
aggregating in excess of $50.0 million, which judgments are not paid, discharged or stayed (including a stay pending appeal) for a period of 60 days after the date of such final judgment (or, if later, the date when payment is due pursuant to such
judgment); 
 (7) except as permitted by this Indenture, any Subsidiary Guarantee is held in any judicial proceeding to be
unenforceable or invalid or ceases for any reason to be in full force and effect or any Guarantor, or any Person acting on behalf of any Guarantor, denies or disaffirms its obligations under its Subsidiary Guarantee (other than by reason of release
of a Guarantor from its Subsidiary Guarantee in accordance with the terms of the Indenture); and 
 (8) the Company, any
Significant Subsidiary of the Company or any group of Subsidiaries of the Company that, taken together, would constitute a Significant Subsidiary pursuant to or within the meaning of Bankruptcy Law: 

(a) commences a voluntary case, 

(b) consents in writing to the entry of an order for relief against it in an involuntary case, 

(c) consents in writing to the appointment of a Custodian of it or for all or substantially all of its property, 

(d) makes a general assignment for the benefit of its creditors, or 

  
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 (e) admits in writing it generally is not paying its debts as they become due; or

 (9) a court of competent jurisdiction enters an order or decree under any Bankruptcy Law that: 

(a) is for relief against the Company, any Significant Subsidiary of the Company or any group of Subsidiaries of the Company
that, taken together, would constitute a Significant Subsidiary in an involuntary case; 
 (b) appoints a Custodian of the
Company, any Significant Subsidiary of the Company or any group of Subsidiaries of the Company that, taken together, would constitute a Significant Subsidiary or for all or substantially all of the property of the Company, any Significant Subsidiary
of the Company or any group of Subsidiaries of the Company, that, taken together, would constitute a Significant Subsidiary; or 

(c) orders the liquidation of the Company, any Significant Subsidiary of the Company or any group of Subsidiaries of the
Company that, taken together, would constitute a Significant Subsidiary; 
 and the order or decree remains unstayed and in effect for 60
consecutive days.” 
 Section 6.02. Acceleration. 

Also as permitted by Section 301(19) of the Original Indenture, the first paragraph of Section 502 of the Original Indenture is
hereby amended to read in its entirety as follows with respect to the Notes: 
 “If any Event of Default occurs and is continuing, the
Trustee, by notice to the Company, or the Holders of at least 25% in aggregate principal amount of the then outstanding Notes, by notice to the Company and the Trustee, may declare all the Notes to be due and payable immediately. Upon any such
declaration, the Notes shall become due and payable immediately, together with all accrued and unpaid interest and premium, if any, thereon. Notwithstanding the preceding, if an Event of Default specified in clause (8) or (9) of
Section 501 hereof occurs with respect to the Company, any Significant Subsidiary of the Company or any group of Subsidiaries of the Company that, taken together, would constitute a Significant Subsidiary, all outstanding Notes shall become due
and payable without further action or notice, together with all accrued and unpaid interest and premium, if any, thereon.” 
 Section 6.03.
[Intentionally Omitted.] 
 Section 6.04. Waiver of Usury, Stay or Extension of Laws. 

Section 515 of the Original Indenture shall not apply to the Notes inasmuch as it is duplicative of Section 4.06 of this Second
Supplemental Indenture. 

  
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 ARTICLE 7 

TRUSTEE; REPORTS 
 Section 7.01. Notice of
Defaults. 
 With respect to the Notes only, the proviso in the first sentence of Section 602 of the Original Indenture shall be
deemed inapplicable. 
 Section 7.02. [Intentionally Omitted.]  

Section 7.03. Compensation and Reimbursement. 

With respect to the Notes only, Section 607 of the Original Indenture is hereby amended to include the following: 

As security for the performance of the obligations of the Company under this Section the Trustee shall have a lien prior to the Notes upon all
property and funds held or collected by the Trustee as such, except funds held in trust for the payment of principal of (and premium, if any) or interest on particular Notes. 

In addition to, but without prejudice to its other rights under this Indenture, when the Trustee incurs expenses or renders services in
connection with an Event of Default specified in Sections 501(8) or 501(9) hereof, the expenses (including the reasonable charges and expenses of its counsel) and the compensation for the services are intended to constitute expenses of
administration under any applicable federal or state bankruptcy, insolvency or other similar law. 
 “Trustee” for purposes of
this Section shall include any predecessor Trustee. 
 The provisions of this Section shall survive the satisfaction and discharge of the
Notes, the termination for any reason of this Indenture, and the resignation or removal of the Trustee. 

  
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 Section 7.04. Reports by Company and Subsidiary Guarantors. 

Section 704 of the Original Indenture shall not apply to the Notes inasmuch as its requirements are duplicative of those set forth in
Section 4.03(a) of this Second Supplemental Indenture. 
 ARTICLE 8 

LEGAL DEFEASANCE AND COVENANT DEFEASANCE 

The provisions of Article Fifteen of the Original Indenture shall not apply to the Notes, and in lieu thereof the following provisions of this
Article 8 shall apply to the Notes. 
 Section 8.01. Option to Effect Legal Defeasance or Covenant Defeasance. 

The Company may, at the option of its Board of Directors evidenced by a resolution set forth in an Officers’ Certificate, at any time,
exercise its rights under either Section 8.02 or 8.03 hereof with respect to all outstanding Notes upon compliance with the conditions set forth below in this Article 8. 

Section 8.02. Legal Defeasance and Discharge. 

Upon the Company’s exercise under Section 8.01 hereof of the option applicable to this Section 8.02, the Company shall, subject
to the satisfaction of the conditions set forth in Section 8.04 hereof, be deemed to have discharged its obligations with respect to all outstanding Notes, and each Guarantor shall be deemed to have discharged its obligations with respect to
its Subsidiary Guarantee, on the date the conditions set forth in Section 8.04 below are satisfied (hereinafter, “Legal Defeasance”). For this purpose, Legal Defeasance means that the Company shall be deemed to have paid and
discharged the entire Indebtedness represented by the outstanding Notes, and each Guarantor shall be deemed to have paid and discharged its Subsidiary Guarantee (which in each case shall thereafter be deemed to be “outstanding” only for
the purposes of Section 8.05 hereof and the other Sections of this Second Supplemental Indenture and the Sections of the Original Indenture referred to in (a) and (b) below) and to have satisfied all its other obligations under such
Notes or Subsidiary Guarantee and the Indenture (and the Trustee, on demand of and at the expense of the Company, shall execute proper instruments acknowledging the same), except for the following provisions which shall survive until otherwise
terminated or discharged hereunder: (a) the rights of Holders of outstanding Notes to receive solely from the trust fund described in Section 8.04 hereof, and as more fully set forth in such Section, payments in respect of the principal of
and premium, if any, and interest on such Notes when such payments are due, (b) the Company’s obligations with respect to such Notes under Sections 304, 305, 306 and 1003 of the Original Indenture and Section 4.02 hereof, (c) the
rights, powers, trusts, duties and immunities of the Trustee hereunder and the Company’s 

  
 54 

 
obligations in connection therewith and (d) the Legal Defeasance provisions of this Article 8. Subject to compliance with this Article 8, the Company may exercise its option under this
Section 8.02 notwithstanding the prior exercise of its option under Section 8.03 hereof. 
 If the Company exercises its Legal
Defeasance option, each Guarantor will be released and relieved of any obligations under its Subsidiary Guarantee and any security for the Notes (other than the trust) will be released. 

Section 8.03. Covenant Defeasance. 
 Upon
the Company’s exercise under Section 8.01 hereof of the option applicable to this Section 8.03, the Company shall, subject to the satisfaction of the conditions set forth in Section 8.04 hereof, be released from its obligations
under the covenants contained in Article 4 hereof (other than those in Sections 4.01, 4.02, 4.06 and 4.14 hereof) and in clause (d) of Section 5.01 hereof on and after the date the conditions set forth below are satisfied (hereinafter,
“Covenant Defeasance”), and the Notes shall thereafter be deemed not “outstanding” for the purposes of any direction, waiver, consent or declaration or act of Holders (and the consequences of any thereof) in connection with such
covenants, but shall continue to be deemed “outstanding” for all other purposes hereunder (it being understood that such Notes shall not be deemed outstanding for accounting purposes). For this purpose, Covenant Defeasance means that, with
respect to the outstanding Notes, the Company and any Guarantor may omit to comply with and shall have no liability in respect of any term, condition or limitation set forth in any such covenant, whether directly or indirectly, by reason of any
reference elsewhere herein to any such covenant or by reason of any reference in any such covenant to any other provision herein or in any other document and such omission to comply shall not constitute a Default or an Event of Default with respect
to the Notes under Section 501 of the Original Indenture (as amended by Section 6.01 of this Second Supplemental Indenture), but, except as specified above, the remainder of the Indenture and such Notes shall be unaffected thereby. In
addition, upon the Company’s exercise under Section 8.01 hereof of the option applicable to this Section 8.03 hereof, subject to the satisfaction of the conditions set forth in Section 8.04 hereof, Sections 501(5) through 501(7)
of the Original Indenture (as amended by Section 6.01 of this Second Supplemental Indenture) shall not constitute Events of Default with respect to the Notes. 

If the Company exercises its Covenant Defeasance option, each Guarantor will be released and relieved of any obligations under its Subsidiary
Guarantee and any security for the Notes (other than the trust) will be released. 
 Section 8.04. Conditions to Legal or Covenant Defeasance. 

In order to exercise either Legal Defeasance or Covenant Defeasance: 

(i) the Company must irrevocably deposit with the Trustee, in trust, for the benefit of the Holders, cash in U.S. dollars,
non-callable Government Securities, or a combination thereof, in such amounts as will be sufficient, in the opinion of a nationally recognized investment bank, appraisal firm or firm of independent public accountants, to

  
 55 

 
pay the principal of, premium, if any, and interest on the outstanding Notes on the date of fixed maturity or on the applicable redemption date, as the case may be, and the Company must specify
whether the Notes are being defeased to the date of fixed maturity or to a particular redemption date; 
 (ii) in the case of
an election under Section 8.02 hereof, the Company shall have delivered to the Trustee an Opinion of Counsel reasonably acceptable to the Trustee confirming that: 

(1) the Company has received from, or there has been published by, the Internal Revenue Service a ruling; or 

(2) since the Issue Date, there has been a change in the applicable federal income tax law, 

in either case to the effect that, and based thereon such Opinion of Counsel shall confirm that, the Holders of the outstanding Notes will not
recognize income, gain or loss for federal income tax purposes as a result of such Legal Defeasance and will be subject to federal income tax on the same amounts, in the same manner and at the same times as would have been the case if such Legal
Defeasance had not occurred; 
 (iii) in the case of an election under Section 8.03 hereof, the Company shall have
delivered to the Trustee an Opinion of Counsel reasonably acceptable to the Trustee confirming that the Holders of the outstanding Notes will not recognize income, gain or loss for federal income tax purposes as a result of such Covenant Defeasance
and will be subject to federal income tax on the same amounts, in the same manner and at the same times as would have been the case if such Covenant Defeasance had not occurred; 

(iv) no Default or Event of Default shall have occurred and be continuing on the date of such deposit (other than a Default or
Event of Default resulting from the incurrence of Indebtedness or the grant of Liens securing such Indebtedness, all or a portion of the proceeds of which will be used to defease the Notes pursuant to this Article 8 concurrently with such
incurrence or within 30 days thereof and any similar concurrent deposit relating to other Indebtedness, and the granting of Liens to secure such borrowing); 

(v) such Legal Defeasance or Covenant Defeasance shall not result in a breach or violation of, or constitute a default under,
any material agreement or instrument (other than the Indenture and the agreements governing any other Indebtedness being defeased, discharged or replaced) to which the Company or any of its Subsidiaries is a party or by which the Company or any of
its Subsidiaries is bound; 
 (vi) the Company shall have delivered to the Trustee an Officers’ Certificate stating that
the deposit was not made by the Company with the intent of preferring the Holders over any other creditors of the Company or with the intent of defeating, hindering, delaying or defrauding creditors of the Company or others; and 

  
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 (vii) the Company shall have delivered to the Trustee an Officers’
Certificate and an Opinion of Counsel, each stating that all conditions precedent provided for or relating to the Legal Defeasance or the Covenant Defeasance have been complied with. 

Section 8.05. Deposited Money and Government Securities to be Held in Trust; Other Miscellaneous Provisions. 

Subject to Section 8.06 hereof, all money and non-callable Government Securities (including the proceeds thereof) deposited with the
Trustee pursuant to Section 8.04 or 8.08 hereof in respect of the outstanding Notes shall be held in trust and applied by the Trustee, in accordance with the provisions of such Notes and the Indenture, to the payment, either directly or through
any Paying Agent (including the Company acting as Paying Agent) as the Trustee may determine, to the Holders of such Notes of all sums due and to become due thereon in respect of principal, premium, if any, and interest, but such money need not be
segregated from other funds except to the extent required by law. 
 The Company shall pay and indemnify the Trustee against any tax, fee or
other charge imposed on or assessed against the cash or non-callable Government Securities deposited pursuant to Section 8.04 or 8.08 hereof or the principal and interest received in respect thereof other than any such tax, fee or other charge
which by law is for the account of the Holders of the outstanding Notes. 
 Anything in this Article 8 to the contrary notwithstanding, the
Trustee shall deliver or pay to the Company from time to time upon the request of the Company any money or non-callable Government Securities held by it as provided in Section 8.04 or 8.08 hereof which, in the opinion of a nationally recognized
firm of independent public accountants expressed in a written certification thereof delivered to the Trustee (which may be the opinion delivered under Section 8.04(a) hereof), are in excess of the amount thereof that would then be required to
be deposited to effect an equivalent Legal Defeasance, Covenant Defeasance or Discharge, as the case may be. 
 Section 8.06. Repayment to Company.

 Subject to applicable escheat and abandoned property laws, any money deposited with the Trustee or any Paying Agent, or then held
by the Company, in trust for the payment of the principal of or premium or interest on any Note and remaining unclaimed for two years after such principal, premium or interest has become due and payable shall be paid to the Company on its request or
(if then held by the Company) shall be discharged from such trust; and the Holder of such Note shall thereafter, as a secured creditor, look only to the Company for payment thereof, and all liability of the Trustee or such Paying Agent with respect
to such trust money, and all liability of the Company as trustee thereof, shall thereupon cease; provided, however, that the Trustee or such Paying Agent, before being required to make any such repayment, may at the expense of the Company cause to
be published once, in the New York Times and The Wall Street Journal (national edition), notice that such money remains unclaimed and that, after a date specified therein, which shall not be less than 30 days from the date of such
notification or publication, any unclaimed balance of such money then remaining will be repaid to the Company. 

  
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 Section 8.07. Reinstatement. 

If the Trustee or Paying Agent is unable to apply any United States dollars or non-callable Government Securities in accordance with
Section 8.05 hereof, by reason of any order or judgment of any court or governmental authority enjoining, restraining or otherwise prohibiting such application, then the Company’s obligations under the Indenture and the Notes shall be
revived and reinstated as though no deposit had occurred pursuant to Section 8.02 or 8.03 hereof until such time as the Trustee or Paying Agent is permitted to apply all such money in accordance with Section 8.05 hereof; provided, however,
that, if the Company makes any payment of principal of, premium, if any, or interest on any Note following the reinstatement of its obligations, the Company shall be subrogated to the rights of the Holders of such Notes to receive such payment from
the money held by the Trustee or Paying Agent. 
 Section 8.08. Discharge. 

The Indenture shall be satisfied and discharged (a “Discharge”) and shall cease to be of further effect as to all Notes issued
hereunder, upon the terms and conditions, and subject to the exceptions, set forth in Article Four of the Original Indenture. 
 ARTICLE 9

 AMENDMENT, SUPPLEMENT AND WAIVER 
 Section
9.01. Without Consent of Holders of Notes. 
 Section 901 of the Original Indenture is hereby amended to read in its entirety as
follows with respect to the Notes: 
 “Notwithstanding Section 902 of this Indenture, the Company, the Guarantors and the Trustee
may amend or supplement this Indenture, the Notes or the Subsidiary Guarantees without the consent of any Holder of a Note: 

(i) to cure any ambiguity, defect or inconsistency; 

(ii) to provide for uncertificated Notes in addition to or in place of certificated Notes; 

(iii) to provide for the assumption of the Company’s or a Guarantor’s obligations to the Holders of Notes pursuant to
Article 5 or Section 10.03 of the Second Supplemental Indenture; 
 (iv) to make any change that would provide any
additional rights or benefits to the Holders of the Notes or that does not adversely affect the legal rights hereunder of 

  
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any Holder, provided that any change to conform this Indenture to the prospectus of the Company relating to the offering of the Notes shall not be deemed to adversely affect the legal rights
hereunder of any Holder; 
 (v) to secure the Notes or the Subsidiary Guarantees pursuant to the requirements of
Section 4.12 of the Second Supplemental Indenture or otherwise; 
 (vi) to provide for the issuance of Additional Notes
in accordance with the limitations set forth in this Indenture; 
 (vii) to add any additional Guarantor with respect to the
Notes or to evidence the release of any Guarantor from its Subsidiary Guarantee in accordance with Article 10 of the Second Supplemental Indenture; 

(viii) to comply with requirements of the SEC in order to effect or maintain the qualification of this Indenture under the TIA;

 (ix) to evidence or provide for the acceptance of appointment under this Indenture of a successor Trustee; 

(x) to add to, change or eliminate any of the provisions of this Indenture in respect of one or more series of Securities,
provided that any such addition, change or elimination (A) shall neither (i) apply to any Security of any series created prior to the execution of such supplemental indenture and entitled to the benefit of such provision nor
(ii) modify the rights of the Holder of any such Security with respect to such provision or (B) shall become effective only when there is no such Security Outstanding; or 

(xi) to establish the form or terms of Securities of any series as permitted by Sections 201 and 301. 

Upon the request of the Company accompanied by a resolution of its Board of Directors authorizing the execution of any such amended or
supplemental indenture, and upon receipt by the Trustee of the Opinion of Counsel described in Section 903 hereof, the Trustee shall join with the Company and the Guarantors in the execution of such amended or supplemental indenture authorized
or permitted by the terms of this Indenture and to make any further appropriate agreements and stipulations that may be therein contained, but the Trustee shall not be obligated to enter into such amended or supplemental Indenture that affects its
own rights, duties or immunities under this Indenture or otherwise.” 
 Section 9.02. With Consent of Holders of Notes. 

Section 902 of the Original Indenture is hereby amended to read in its entirety as follows with respect to the Notes: 

“Except as provided above in Section 901 and below in this Section 902, the Company, the Guarantors and the Trustee may amend or
supplement this Indenture, the Notes or the Subsidiary Guarantees may be amended or supplemented with the consent of the Holders of at 

  
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least a majority in aggregate principal amount of the Notes then outstanding (including consents obtained in connection with a purchase of, or tender offer or exchange offer for, Notes), and,
subject to Sections 508 and 513 hereof, any existing Default or Event of Default with respect to the Notes or compliance with any provision of this Indenture, the Notes or the Subsidiary Guarantees may be waived with the consent of the Holders of at
least a majority in aggregate principal amount of the then outstanding Notes (including consents obtained in connection with a purchase of, tender offer or exchange offer for Notes). 

Upon the request of the Company accompanied by a resolution of its Board of Directors authorizing the execution of any such amended or
supplemental indenture, and upon the filing with the Trustee of evidence satisfactory to the Trustee of the consent of the Holders of Notes as aforesaid, and upon receipt by the Trustee of the Opinion of Counsel described in Section 903 hereof,
the Trustee shall join with the Company and the Guarantors in the execution of such amended or supplemental indenture unless such amended or supplemental indenture affects the Trustee’s own rights, duties or immunities under this Indenture or
otherwise, in which case the Trustee may in its discretion, but shall not be obligated to, enter into such amended or supplemental indenture. 

It shall not be necessary for the consent of the Holders of Notes under this Section 902 to approve the particular form of any proposed
amendment, supplement or waiver, but it shall be sufficient if such consent approves the substance thereof. 
 After an amendment,
supplement or waiver under this Section becomes effective, the Company shall mail to the Holders of Notes affected thereby a notice briefly describing the amendment, supplement or waiver. Any failure of the Company to mail such notice, or any defect
therein, shall not, however, in any way impair or affect the validity of any such amended or supplemental Indenture or waiver. Subject to Sections 508 and 513 hereof and to the last paragraph of this Section 902, the Holders of a majority in
principal amount of the Notes then outstanding may waive compliance in a particular instance by the Company with any provision of this Indenture or the Notes. However, without the consent of each Holder affected, an amendment, supplement or waiver
may not (with respect to any Notes held by a non-consenting Holder): 
 (a) reduce the principal amount of Notes whose
Holders must consent to an amendment, supplement or waiver; 
 (b) reduce the principal of or change the fixed maturity of
any Note or alter any of the provisions with respect to the redemption or repurchase of the Notes (except as provided in Sections 3.04, 4.10 and 4.15 of the Second Supplemental Indenture); 

(c) reduce the rate of or change the time for payment of interest on any Note; 

(d) waive a Default or Event of Default in the payment of principal of or premium, if any, or interest on the Notes (except a
rescission of acceleration of the Notes by the Holders of at least a majority in principal amount of the Notes and a waiver of the payment default that resulted from such acceleration); 

(e) make any Note payable in money other than that stated in the Notes; 

  
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 (f) make any change in the provisions of this Indenture relating to waivers of
past Defaults or Events of Default or the rights of Holders of Notes to receive payments of principal of or premium, if any, or interest on the Notes (except as permitted in clause (g) below); 

(g) waive a redemption or repurchase payment with respect to any Note (other than a payment required by Sections 3.04, 4.10 and
4.15 of the Second Supplemental Indenture); 
 (h) release any Guarantor from any of its obligations under its Subsidiary
Guarantee or this Indenture, except in accordance with the terms of this Indenture; or 
 (i) make any change in the
preceding amendment, supplement and waiver provisions. 
 Section 9.03. Revocation and Effect of Consents. 

A consent to any amendment, supplement or waiver under the Indenture by any Holder given in connection with a purchase, tender or exchange of
such Holder’s Notes shall not be rendered invalid by such purchase, tender or exchange. 
 Until an amendment, supplement or waiver
becomes effective, a consent to it by a Holder of a Note is a continuing consent by the Holder of a Note and every subsequent Holder of a Note or portion of a Note that evidences the same debt as the consenting Holder’s Note, even if notation
of the consent is not made on any Note. However, any such Holder of a Note or subsequent Holder of a Note may revoke the consent as to its Note if the Trustee receives written notice of revocation before the date the waiver, supplement or amendment
becomes effective. An amendment, supplement or waiver becomes effective in accordance with its terms and thereafter binds every Holder. 

The Company may, but shall not be obligated to, fix a record date for the purpose of determining the Holders entitled to consent to any
amendment, supplement or waiver. If a record date is fixed, then notwithstanding the last sentence of the immediately preceding paragraph, those Persons who were Holders at such record date (or their duly designated proxies), and only those Persons,
shall be entitled to consent to such amendment or waiver or revoke any consent previously given, whether or not such Persons continue to be Holders after such record date. No consent shall be valid or effective for more than 90 days after such
record date except to the extent that the requisite number of consents to the amendment, supplement or waiver have been obtained within such 90-day period or as set forth in the next paragraph of this Section 9.03. 

After an amendment, supplement or waiver becomes effective, it shall bind every Holder, unless it makes a change described in any of clauses
(a) through (i) of Section 902 of the Indenture, in which case, the amendment, supplement or waiver shall bind only each Holder of a Note who has consented to it and every subsequent Holder of a Note or portion of a Note that
evidences the same indebtedness as the consenting Holder’s Note. 

  
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 ARTICLE 10 

GUARANTEES OF NOTES 
 The Notes
shall have the benefit of Subsidiary Guarantees. The provisions of Article Thirteen of the Original Indenture shall not apply to the Notes, and in lieu thereof the following provisions of this Article 10 shall apply to the Notes. 

Section 10.01. Subsidiary Guarantees. 

Subject to this Article 10, each of the Guarantors hereby, jointly and severally, unconditionally guarantees to each Holder of a Note
authenticated and delivered by the Trustee and to the Trustee and its successors and assigns, irrespective of the validity and enforceability of this Second Supplemental Indenture or the Indenture, the Notes held thereby and the Obligations of the
Company hereunder and thereunder, that: (a) the principal of and premium, if any, and interest on the Notes will be promptly paid in full when due, subject to any applicable grace period, whether at Stated Maturity, by acceleration, upon
repurchase or redemption or otherwise, and interest on the overdue principal of and premium, if any, and (to the extent permitted by law) interest on the Notes, and all other payment Obligations of the Company to the Holders or the Trustee hereunder
or thereunder will be promptly paid in full and performed, all in accordance with the terms hereof and thereof; and (b) in case of any extension of time of payment or renewal of any Notes or any of such other Obligations, the same will be
promptly paid in full when due or performed in accordance with the terms of the extension or renewal, subject to any applicable grace period, whether at Stated Maturity, by acceleration, upon repurchase or redemption or otherwise. Failing payment
when so due of any amount so guaranteed for whatever reason, the Guarantors will be jointly and severally obligated to pay the same immediately. An Event of Default with respect to the Notes under the Indenture shall constitute an event of default
under the Subsidiary Guarantees, and shall entitle the Holders to accelerate the obligations of the Guarantors hereunder in the same manner and to the same extent as the Obligations of the Company. 

The Guarantors hereby agree that their obligations hereunder shall be unconditional, irrespective of the validity, regularity or
enforceability of the Notes or this Second Supplemental Indenture or the Indenture, the absence of any action to enforce the same, any waiver or consent by any Holder with respect to any provisions hereof or thereof, the recovery of any judgment
against the Company, any action to enforce the same or any other circumstance (other than complete performance) which might otherwise constitute a legal or equitable discharge or defense of a Guarantor. Each Guarantor further, to the extent
permitted by law, hereby waives diligence, presentment, demand of payment, filing of claims with a court in the event of insolvency or bankruptcy of the Company, any right to require a proceeding first against the Company, protest, notice and all
demands whatsoever and covenants that its Subsidiary Guarantee will not be discharged except by complete performance of the Obligations contained in the Notes and the Indenture. 

If any Holder or the Trustee is required by any court or otherwise to return to the Company, the Guarantors, or any Custodian, Trustee or
other similar official acting in relation to either the Company or the Guarantors, any amount paid by the Company or any Guarantor to the 

  
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Trustee or such Holder, the Subsidiary Guarantees, to the extent theretofore discharged, shall be reinstated in full force and effect. Each Guarantor agrees that it shall not be entitled to, and
hereby waives, any right of subrogation in relation to the Holders in respect of any Obligations guaranteed hereby. 
 Each Guarantor
further agrees that, as between the Guarantors, on the one hand, and the Holders and the Trustee, on the other hand, (a) the maturity of the Obligations guaranteed hereby may be accelerated as provided in Article Five of the Original Indenture
for the purposes of its Subsidiary Guarantee, notwithstanding any stay, injunction or other prohibition preventing such acceleration in respect of the Obligations guaranteed thereby, and (b) in the event of any declaration of acceleration of
such Obligations as provided in Article Five of the Original Indenture, such Obligations (whether or not due and payable) shall forthwith become due and payable by the Guarantor for the purpose of its Subsidiary Guarantee. The Guarantors shall have
the right to seek contribution from any non-paying Guarantor so long as the exercise of such right does not impair the rights of the Holders under the Subsidiary Guarantees. 

Section 10.02. Notation of Subsidiary Guarantees. 

The Subsidiary Guarantees shall be evidenced by the execution and delivery of the Second Supplemental Indenture or a supplement to the
Indenture and no notation of any Subsidiary Guarantee need be endorsed on any Note, notwithstanding any contrary provision of the Original Indenture. 

Section 10.03. Guarantors May Consolidate, Etc., on Certain Terms. 

(a) No Guarantor shall sell or otherwise dispose of all or substantially all of its properties or assets to, or consolidate with or merge with
or into (whether or not such Guarantor is the surviving Person), another Person (other than the Company or another Guarantor), unless, (i) either (1) the Person acquiring the properties or assets in any such sale or other disposition or
the Person formed by or surviving any such consolidation or merger (if other than such Guarantor) unconditionally assumes all the obligations of such Guarantor, pursuant to a supplemental indenture, substantially in the form of Exhibit B
hereto, under the Notes, the Indenture and its Subsidiary Guarantee on terms set forth therein, or (2) the Net Proceeds of such sale or other disposition are applied in accordance with the provisions of Section 4.10 hereof, and
(ii) immediately after giving effect to such transaction, no Default or Event of Default exists. 
 (b) In the case of any such
consolidation or merger and upon the assumption by the successor Person, by supplemental indenture, executed and delivered to the Trustee and substantially in the form of Exhibit B hereto, of the Subsidiary Guarantee and the due and punctual
performance of all of the covenants of the Indenture to be performed by the Guarantor, such successor Person shall succeed to and be substituted for the Guarantor with the same effect as if it had been named herein as a Guarantor. 

  
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 Section 10.04. Releases of Subsidiary Guarantees. 

The Subsidiary Guarantee of a Guarantor shall be released: (1) in connection with any sale or other disposition of all or substantially
all of the properties or assets of such Guarantor (including by way of merger or consolidation) to a Person that is not (either before or after giving effect to such transaction) a Subsidiary of the Company, if the sale or other disposition complies
with Section 4.10 hereof; or (2) in connection with any sale or other disposition of all of the Capital Stock of such Guarantor to a Person that is not (either before or after giving effect to such transaction) a Subsidiary of the Company,
if the sale or other disposition complies with Section 4.10 hereof; or (3) if such Guarantor ceases to be a Material Domestic Subsidiary and is not a guarantor of Indebtedness of the Company in excess of $1.0 million; or (4) if the
Company designates any Restricted Subsidiary that is a Guarantor as an Unrestricted Subsidiary in accordance with the applicable provisions of the Indenture; or (5) upon Legal Defeasance or Covenant Defeasance or Discharge in accordance with
Article 8 hereof. 
 Upon delivery by the Company to the Trustee of an Officers’ Certificate to the effect that any of the foregoing
clauses (1) – (5) has occurred, the Trustee shall execute any documents reasonably requested by the Company in order to evidence the release of any Guarantor from its obligations under its Subsidiary Guarantee. Any Guarantor not
released from its obligations under its Subsidiary Guarantee shall remain liable for the full amount of principal of, premium, if any, and interest on the Notes and for the other obligations of such Guarantor under the Indenture as provided in this
Article 10. 
 Section 10.05. Limitation on Guarantor Liability. 

The obligations of each Guarantor under its Subsidiary Guarantee will be limited to the maximum amount as will, after giving effect to all
other contingent and fixed liabilities of such Guarantor and after giving effect to any collections from or payments made by or on behalf of any other Guarantor in respect of the obligations of such other Guarantor under its Subsidiary Guarantee or
pursuant to its contribution obligations under the Indenture, result in the obligations of such Guarantor under its Subsidiary Guarantee not constituting a fraudulent conveyance or fraudulent transfer under federal or state law and not otherwise
being void or voidable under any similar laws affecting the rights of creditors generally. 
 Section 10.06. “Trustee” to Include Paying
Agent. 
 In case at any time any Paying Agent other than the Trustee shall have been appointed by the Company and be then acting
hereunder, the term “Trustee” as used in this Article 10 shall in each case (unless the context shall otherwise require) be construed as extending to and including such Paying Agent within its meaning as fully and for all intents and
purposes as if such Paying Agent were named in this Article 10 in place of the Trustee. 

  
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 ARTICLE 11 

MISCELLANEOUS 
 Section 11.01. Second
Supplemental Indenture Controls. 
 To the extent that there is any conflict or inconsistency between the Original Indenture and this
Second Supplemental Indenture, the provisions of this Second Supplemental Indenture shall control. 
 Section 11.02. No Personal Liability of Directors,
Officers, Employees and Stockholders. 
 No past, present or future director, officer, employee, incorporator or stockholder or other
owner of Capital Stock of the Company or any Guarantor, as such, shall have any liability for any obligations of the Company or any Guarantor under the Notes, the Subsidiary Guarantees or the Indenture or for any claim based on, in respect of, or by
reason of, such obligations or their creation. Each Holder of Notes by accepting a Note waives and releases all such liability. The waiver and release are part of the consideration for issuance of the Notes. 

Section 11.03. Governing Law; Waiver of Jury Trial; Submission to Jurisdiction. 

THIS SECOND SUPPLEMENTAL INDENTURE AND THE NOTES SHALL BE GOVERNED BY, AND CONSTRUED IN ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW YORK.
EACH OF THE PARTIES HERETO, BY ITS ACCEPTANCE THEREOF, HEREBY IRREVOCABLY WAIVES, TO THE FULLEST EXTENT PERMITTED BY APPLICABLE LAW, ANY AND ALL RIGHT TO TRIAL BY JURY IN ANY LEGAL PROCEEDING DIRECTLY OR INDIRECTLY ARISING OUT OF OR RELATING TO THIS
INDENTURE, THE NOTES OR THE TRANSACTION CONTEMPLATED HEREBY OR THEREBY. EACH OF THE COMPANY AND THE TRUSTEE SUBMIT TO THE JURISDICTION OF THE COURTS OF THE STATE OF NEW YORK SITTING IN THE COUNTY OF NEW YORK, AND OF THE UNITED STATES DISTRICT COURT
FOR THE SOUTHERN DISTRICT OF NEW YORK SITTING IN THE BOROUGH OF MANHATTAN, THE CITY OF NEW YORK, IN ANY ACTION OR PROCEEDING TO ENFORCE ANY OF ITS OBLIGATIONS UNDER THIS INDENTURE OR WITH REGARD TO THE NOTES (BUT THE COMPANY AND THE TRUSTEE WILL NOT
BE PREVENTED FROM REMOVING ANY SUCH ACTION OR PROCEEDING FROM A STATE COURT TO THE UNITED STATES DISTRICT COURT FOR THE SOUTHERN DISTRICT OF NEW YORK SITTING IN THE BOROUGH OF MANHATTAN, THE CITY OF NEW YORK). 

Section 11.04. Force Majeure. 
 In no
event shall the Trustee be responsible or liable, nor shall the Company be responsible or liable to the Trustee, for any failure or delay in the performance of its obligations 

  
 65 

 
hereunder arising out of or caused by, directly or indirectly, forces beyond its control, including, without limitation, strikes, work stoppages, accidents, acts of war or terrorism, civil or
military disturbances, and nuclear or natural catastrophes or acts of God; it being understood that the Trustee or the Company, as the case may be, shall use reasonable efforts which are consistent with accepted practices to resume performance
as soon as practicable under the circumstances; provided that the foregoing limitations shall not apply to any obligations of Company or the Guarantors under the Notes. 

Section 11.05. No Adverse Interpretation of Other Agreements. 

The Indenture may not be used to interpret any other indenture, loan or debt agreement of the Company or its Subsidiaries or of any other
Person. Any such indenture, loan or debt agreement may not be used to interpret the Indenture. 
 Section 11.06. Table of Contents and Headings.

 The Table of Contents and headings of the Articles and Sections of this Second Supplemental Indenture have been inserted for convenience
of reference only, are not to be considered a part of this Second Supplemental Indenture and shall in no way modify or restrict any of the terms or provisions hereof. 

Section 11.07. Counterparts. 
 This Second
Supplemental Indenture may be signed in counterparts and by the different parties hereto in separate counterparts, each of which shall constitute an original and all of which together shall constitute one and the same instrument. 

[Signatures on following page] 

  
 66 

 SIGNATURES 

 

			
	WHITING PETROLEUM CORPORATION
		
	By:	 	/s/ James J. Volker
		 	James J. Volker
		 	Chairman and
		 	Chief Executive Officer

  

			
	WHITING OIL AND GAS CORPORATION
		
	By:	 	/s/ James J. Volker
		 	James J. Volker
		 	Chairman and
		 	Chief Executive Officer

  
 [Signature Page to
Second Supplemental Indenture] 

 
			
	 THE BANK OF NEW YORK MELLON

TRUST COMPANY, N.A.,
 as
TRUSTEE

		
	By:	 	/s/ Julie Hoffman-Ramos
	Name: Julie Hoffman-Ramos
	Title: Vice President

  
 [Signature Page to
Second Supplemental Indenture] 

 EXHIBIT A 

[FORM OF FACE OF NOTE] 
 Unless this
certificate is presented by an authorized representative of The Depository Trust Company, a New York corporation (“DTC”), to the issuer or its agent for registration of transfer, exchange or payment, and any certificate issued is
registered in the name of Cede & Co. or such other name as is requested by an authorized representative of DTC (and any payment is made to Cede & Co. or to such other entity as is requested by an authorized representative of DTC),
ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL since the registered owner hereof, Cede & Co., has an interest herein. 

THIS SECURITY IS A GLOBAL SECURITY AS REFERRED TO IN THE INDENTURE HEREINAFTER REFERENCED. UNLESS AND UNTIL IT IS EXCHANGED IN WHOLE OR IN
PART FOR THE INDIVIDUAL SECURITIES REPRESENTED HEREBY, THIS GLOBAL SECURITY MAY NOT BE TRANSFERRED EXCEPT AS A WHOLE BY THE DEPOSITARY TO A NOMINEE OF THE DEPOSITARY OR BY A NOMINEE OF THE DEPOSITARY TO THE DEPOSITARY OR ANOTHER NOMINEE OF THE
DEPOSITARY OR BY THE DEPOSITARY OR ANY SUCH NOMINEE TO A SUCCESSOR DEPOSITARY OR A NOMINEE OF SUCH SUCCESSOR DEPOSITARY. 
 WHITING
PETROLEUM CORPORATION 
  

			
	No.       	  	$                    
		  	CUSIP No. 966387 AH5
		  	ISIN No. US966387AH55

 5.750% Senior Note due 2021 

Whiting Petroleum Corporation, a Delaware corporation, promises to pay to
                    , or registered assigns, the principal sum of
                     Dollars on March 15, 2021 [or such greater or lesser amount as may be indicated on Schedule A hereto].1 
 Interest Payment Dates: March 15 and September 15. 

Record Dates: March 1 and September 1. 

Additional provisions of this Note are set forth on the other side of this Note. 

 
  

	1 	If this Note is a Global Security, add this provision. 

  
 A-1 

									
	ATTEST:	  		 	WHITING PETROLEUM CORPORATION
					
	By:	  	 	  		 	By:	  	 
	Name:	  		 	Name:
	Title:	  		 	Title:

  

			
	 TRUSTEE’S CERTIFICATE OF

AUTHENTICATION

	
	 This is one of the Securities of the

series designated therein referred to in the
 within-mentioned
Indenture.

	
	 THE BANK OF NEW YORK MELLON
 TRUST
COMPANY, N.A., As Trustee

		
	By	 	 
		 	Authorized Officer

 Dated: 

  
 A-2 

 [FORM OF REVERSE SIDE OF NOTE] 

5.750% Senior Note due 2021 

Capitalized terms used herein but not defined shall have the meanings assigned to them in the Indenture referred to below unless otherwise
indicated. 
 1. Interest. Whiting Petroleum Corporation, a Delaware corporation (the “Company”), promises to pay interest
on the principal amount of this Note at 5.750% per annum from                          until maturity. The Company
will pay interest semi-annually in arrears on March 15 and September 15 of each year, commencing March 15, 2014, or if any such day is not a Business Day, on the next succeeding Business Day (each an “Interest Payment
Date”). Interest on the Notes will accrue from the most recent date to which interest has been paid or, if no interest has been paid, from the date of original issuance; provided that if there is no existing Default or Event of Default in the
payment of interest, and if this Note is authenticated between a record date referred to on the face hereof and the next succeeding Interest Payment Date, interest shall accrue from such next succeeding Interest Payment Date, except in the case of
the original issuance of Notes, in which case interest shall accrue from the date of authentication. The Company shall pay interest (including post-petition interest in any proceeding under any Bankruptcy Law) on overdue principal and premium, if
any, from time to time on demand at a rate that is the rate then in effect; it shall pay interest (including post-petition interest in any proceeding under any Bankruptcy Law) on overdue installments of interest (without regard to any applicable
grace periods) from time to time on demand at the same rate to the extent lawful. Interest will be computed on the basis of a 360-day year of twelve 30-day months. 

2. Method of Payment. The Company will pay interest on the Notes to the Persons who are registered Holders of Notes at the close of
business on the March 1 or September 1 next preceding the Interest Payment Date, even if such Notes are cancelled after such record date and on or before such Interest Payment Date, except as provided in Section 307 of the Indenture
with respect to Defaulted Interest. Holders must surrender Notes to the Paying Agent to collect payments of principal and premium, if any, together with accrued and unpaid interest due at maturity. The Notes will be payable as to principal, premium,
if any, and interest at the office or agency of the Company maintained for such purpose within the City and State of New York, or, at the option of the Company, payment of interest may be made by check mailed to the Holders at their addresses set
forth in the Security Register of Holders, and provided that payment by wire transfer of immediately available funds will be required with respect to any amounts due on all Global Securities and all other Notes the Holders of which shall have
provided wire transfer instructions to the Company or the Paying Agent. Such payment shall be in such coin or currency of the United States of America as at the time of payment is legal tender for payment of public and private debts. 

3. Paying Agent and Registrar. Initially, The Bank of New York Mellon Trust Company, N.A., the Trustee under the Indenture, will act as
Paying Agent and Security Registrar. The Company may change any Paying Agent or Security Registrar without notice to any Holder. The Company or any of its Domestic Subsidiaries may act in any such capacity. 

4. Indenture. This Note is one of a duly authorized issue of the series of Securities of the Company designated as its 5.750% Senior
Notes due 2021 (the “Notes”), issued under a Senior Indenture, dated as of September 12, 2013 (“Original Indenture”), among the Company, the Guarantors and the Trustee, as supplemented and amended by the Second Supplemental

  
 A-3 

 
Indenture (herein so called), dated as of September 12, 2013 (the Original Indenture, as so supplemented and amended, being called herein the “Indenture”). Capitalized terms herein
are used as defined in the Indenture unless otherwise indicated. The terms of the Notes include those stated in the Indenture and those made part of the Indenture by reference to the Trust Indenture Act of 1939, as amended (15 U.S. Code §§
77aaa-77bbbb). The Notes are subject to all such terms, and Holders are referred to the Indenture and such Act for a statement of such terms. The Notes are unsecured senior obligations of the Company limited to $800,000,000 aggregate principal
amount in the case of Notes issued on the Issue Date. The Company may, subject to Sections 2.05 and 4.09 of the Second Supplemental Indenture, issue Additional Notes under the Indenture after the Issue Date in either a limited or an unlimited
aggregate principal amount. Any Additional Notes so issued and the Initial Notes shall be treated as a single class under the Indenture. 

5. Optional Redemption. 

(a) Except as set forth in subparagraph (b) of this Paragraph 5 or in Section 4.15 of the Second Supplemental Indenture, the Company
shall not have the option to redeem the Notes prior to December 15, 2020. On and after December 15, 2020, the Company may on any one or more occasions redeem the Notes, in whole or in part, at a Redemption Price equal to 100% of the
principal amount thereof, plus accrued and unpaid interest, if any, to the Redemption Date (subject to the right of Holders of record on the relevant record date to receive interest due on an Interest Payment Date that is on or prior to the
Redemption Date). 
 (b) Notwithstanding the provisions of subparagraph (a) of this Paragraph 5, at any time prior to December 15,
2020, the Company may on any one or more occasions redeem the Notes, in whole or in part, at the Redemption Price of 100% of the principal amount thereof plus the Applicable Premium as of, plus accrued and unpaid interest, if any, to, the Redemption
Date (subject to the right of Holders of record on the relevant record date to receive interest due on an Interest Payment Date that is on or prior to the Redemption Date). 

6. Mandatory Redemption. 

Except as set forth in paragraph 7 below, the Company shall not be required to make mandatory redemption or sinking fund payments with respect
to the Notes or to repurchase the Notes at the option of the Holders. 

  
 A-4 

 7. Repurchase at Option of Holder. 

(a) Within 30 days following the occurrence of a Change of Control, the Company shall make an offer (a “Change of Control Offer”) to
repurchase all or any part (equal to $2,000 or any integral $1,000 multiple in excess thereof) of each Holder’s Notes at a purchase price equal to 101% of the aggregate principal amount of Notes repurchased, plus accrued and unpaid interest, if
any, to the date of settlement (the “Change of Control Settlement Date”), subject to the right of Holders of record on the relevant record date to receive interest due on an Interest Payment Date that is on or prior to the Change of
Control Settlement Date. Within 30 days following a Change of Control, the Company shall mail a notice of the Change of Control Offer to each Holder and the Trustee describing the transaction that constitutes the Change of Control and setting forth
the procedures governing the Change of Control Offer as required by Section 4.15 of the Second Supplemental Indenture. 
 (b) On the
361st day after an Asset Sale, if the aggregate amount of Excess Proceeds then exceeds $50.0 million, the Company shall commence an offer to all Holders of Notes (an “Asset Sale Offer”) pursuant to Section 3.04 of the Second
Supplemental Indenture, and to all holders of any Pari Passu Indebtedness then outstanding, to purchase the maximum principal amount of Notes and such Pari Passu Indebtedness that may be purchased out of the Excess Proceeds, at an offer price in
cash in an amount equal to 100% of the principal amount of the Notes plus accrued and unpaid interest, if any, thereon to Settlement Date, subject to the right of Holders of record on the relevant record date to receive interest due on an Interest
Payment Date that is on or prior to the Settlement Date, in accordance with the procedures set forth in the Indenture. If any Excess Proceeds remain after consummation of an Asset Sale Offer, the Company may use such remaining Excess Proceeds for
any purpose not otherwise prohibited by the Indenture. If the aggregate principal amount of Notes surrendered by Holders thereof and Pari Passu Indebtedness surrendered by holders or lenders, collectively, exceeds the amount of Excess Proceeds, the
Trustee shall select the Notes and Pari Passu Indebtedness to be purchased on a pro rata basis (with such adjustments as may be deemed appropriate by the Trustee so that only Notes in denominations of $2,000, or integral $1,000 multiples in excess
thereof, shall be purchased) on the basis of the aggregate principal amount of tendered Notes and Pari Passu Indebtedness. Holders of Notes that are the subject of an offer to purchase will receive an Asset Sale Offer from the Company prior to any
related purchase date and may elect to have such Notes purchased by completing the form entitled “Option of Holder to Elect Purchase” on the reverse of the Notes. 

8. Notice of Redemption. Notice of redemption will be mailed at least 30 days but not more than 60 days (except as otherwise provided
in the Indenture if the notice is issued in connection with a Covenant Defeasance, Legal Defeasance or Discharge) before the Redemption Date to each Holder whose Notes are to be redeemed at its registered address. Notes in denominations larger than
$2,000 may be redeemed in part but only in whole multiples of $1,000, unless all of the Notes held by a Holder are to be redeemed. On and after the Redemption Date interest ceases to accrue on Notes or portions thereof called for redemption. 

9. Denominations, Transfer, Exchange. The Notes are in registered form without coupons in denominations of $2,000 and any integral
multiple of $1,000 in excess thereof. The transfer of Notes may be registered and Notes may be exchanged as provided in the Indenture. The Company or the Trustee may require a Holder, among other things, to furnish appropriate endorsements and
transfer documents, and may require a Holder to pay any taxes due on transfer 

  
 A-5 

 
or exchange. The Company need not exchange or register the transfer of any Note or portion of a Note selected for redemption, except for the unredeemed portion of any Note being redeemed in part.
Also, it need not exchange or register the transfer of any Notes for a period of 15 days before the day of the mailing of a notice of redemption of Notes selected for redemption. 

10. Persons Deemed Owners. The registered Holder of a Note may be treated as its owner for all purposes. 

11. Amendment, Supplement and Waiver. Subject to certain exceptions, the Indenture, the Notes or the Subsidiary Guarantees may be
amended or supplemented with the consent of the Holders of at least a majority in aggregate principal amount of the then outstanding Notes, and any existing default or compliance with any provision of the Indenture, the Notes or the Subsidiary
Guarantees may be waived with the consent of the Holders of at least a majority in aggregate principal amount of the then outstanding Notes. Without the consent of any Holder of a Note, the Indenture, the Notes or the Subsidiary Guarantees may be
amended or supplemented to cure any ambiguity, defect or inconsistency, to provide for uncertificated Notes in addition to or in place of certificated Notes, to provide for the assumption of the Company’s or a Guarantor’s obligations to
Holders of the Notes pursuant to Article 5 of the Second Supplemental Indenture, to make any change that would provide any additional rights or benefits to the Holders of the Notes or that does not adversely affect the legal rights under the
Indenture of any such Holder, provided that any change to conform the Indenture to the Company’s prospectus relating to the offering of the Notes shall not be deemed to adversely affect the legal rights under the Indenture of any Holder, to
secure the Notes or the Subsidiary Guarantees pursuant to Section 4.12 of the Second Supplemental Indenture or otherwise, to provide for the issuance of Additional Notes in accordance with the limitations set forth in the Indenture, to add any
additional Guarantor with respect to the Notes or to evidence the release of any Guarantor from its Subsidiary Guarantee, in each case as provided in the Indenture, to comply with the requirements of the SEC in order to effect or maintain the
qualification of the Indenture under the Trust Indenture Act, to evidence or provide for the acceptance of appointment under the Indenture of a successor Trustee, to add to, change or eliminate any provisions of the Indenture in respect of one or
more other series of Securities or to establish the forms or terms of Securities of any other series as permitted by the Indenture. 
 12.
Defaults and Remedies. Events of Default with respect to the Notes include: (i) default for 30 days in the payment when due of interest on the Notes; (ii) default in payment when due of the principal of or premium, if any, on the
Notes when due at Stated Maturity, upon optional redemption, upon required repurchase, upon declaration or otherwise; (iii) failure by the Company to comply with Section 4.07, 4.09, 4.10, 4.15 or 5.01 of the Second Supplemental Indenture;
(iv) failure by the Company or a Guarantor for 60 days (or 180 days in the case of Reporting Failure) after notice to comply with any of its other agreements in the Indenture or the Notes; (v) default under any mortgage, indenture or
instrument under which there may be issued or by which there may be secured or evidenced any Indebtedness for money borrowed by the Company or any of its Restricted Subsidiaries (or the payment of which is guaranteed by the Company or any of its
Restricted Subsidiaries), whether such Indebtedness or guarantee now exists or is created after the Issue Date, if such default (a) is caused by a failure to pay principal of, or premium or interest, if any, on such Indebtedness prior to the
expiration of any grace period provided in such Indebtedness (a “Payment Default”) or (b) results in the acceleration of such Indebtedness prior to its Stated Maturity and, in each case, the principal amount of any such Indebtedness,
together with the principal amount of any other such Indebtedness under which 

  
 A-6 

 
there has been a Payment Default or the maturity of which has been so accelerated, aggregates $50.0 million or more; provided, that if any such default is cured or waived or any such acceleration
is rescinded, or such Indebtedness is repaid, within a period of 10 days from the continuation of such default beyond the applicable grace period or the occurrence of such acceleration, as the case may be, such Event of Default under the Indenture
and any consequential acceleration of the Notes shall be automatically rescinded; (vi) failure by the Company or any of its Significant Subsidiaries to pay final judgments aggregating in excess of $50.0 million, which judgments are not paid,
discharged or stayed (including a stay pending appeal) for a period of 60 days after the date of such final judgment (or, if later, the date when payment is due pursuant to such judgment); (vii) except as permitted by the Indenture, any
Subsidiary Guarantee is held in any judicial proceeding to be unenforceable or invalid or ceases for any reason to be in full force and effect or any Guarantor, or any Person acting on behalf of any Guarantor, denies or disaffirms its obligations
under its Subsidiary Guarantee (other than by reason of release of a Guarantor from its Subsidiary Guarantee in accordance with the terms of the Indenture); and (viii) certain events of bankruptcy, insolvency or reorganization with respect to
the Company, any Significant Subsidiary or any group of Subsidiaries that, taken together, would constitute a Significant Subsidiary as specified in Section 501(8) or 501(9) of the Indenture. If any Event of Default occurs and is continuing,
the Trustee, by notice to the Company, or the Holders of at least 25% in aggregate principal amount of the then outstanding Notes, by notice to the Company and the Trustee, may declare all the Notes to be due and payable immediately. Notwithstanding
the preceding, in the case of an Event of Default arising from certain events of bankruptcy, insolvency or reorganization with respect to the Company, any Significant Subsidiary or any group of Subsidiaries that, taken together, would constitute a
Significant Subsidiary described in Section 501(8) or 501(9) of the Original Indenture (as amended by Section 6.01 of the Second Supplemental Indenture), all outstanding Notes will become due and payable without further action or notice.
Holders may not enforce the Indenture or the Notes except as provided in the Indenture. Subject to certain limitations, Holders of a majority in principal amount of the then outstanding Notes may direct the Trustee in its exercise of any trust or
power conferred on it. The Trustee may withhold from Holders of the Notes notice of any continuing Default or Event of Default with respect to the Notes (except a Default or Event of Default relating to the payment of principal, premium, if any, or
interest) if it determines that withholding notice is in their interest. The Holders of a majority in principal amount of the Notes then outstanding by notice to the Trustee may on behalf of the Holders of all of the Notes waive any past Default or
Event of Default with respect to the Notes and its consequences under the Indenture except a continuing Default or Event of Default in the payment of the principal of or premium, if any, or interest on the Notes. The Company is required to deliver
to the Trustee annually a statement regarding compliance with the Indenture, and, so long as any Notes are outstanding, the Company is required upon becoming aware of any Default or Event of Default with respect to the Notes, to deliver to the
Trustee a statement specifying such Default or Event of Default. 
 13. Defeasance and Discharge. The Notes are subject to defeasance
and discharge upon the terms and conditions specified in the Indenture. 
 14. No Recourse Against Others. No past, present or future
director, officer, employee, incorporator, member, partner or stockholder or other owner of Capital Stock of the Company or any Guarantor, as such, shall have any liability for any obligations of the Company or any Guarantor under the Notes, the
Subsidiary Guarantees or the Indenture or for any claim based on, in respect of, or by reason of, such obligations or their creation. Each Holder by accepting a Note waives and releases all such liability. The waiver and release are part of the
consideration for the issuance of the Notes. 

  
 A-7 

 15. Authentication. This Note shall not be valid until authenticated by the manual
signature of an authorized signatory of the Trustee or an authenticating agent. 
 16. Abbreviations. Customary abbreviations may be
used in the name of a Holder or an assignee, such as: TEN COM (= tenants in common), TEN ENT (= tenants by the entireties), JT TEN (= joint tenants with right of survivorship and not as tenants in common), CUST (= Custodian), and U/G/M/A (= Uniform
Gifts to Minors Act). 
 17. CUSIP Numbers. Pursuant to a recommendation promulgated by the Committee on Uniform Security
Identification Procedures, the Company has caused CUSIP numbers to be printed on the Notes and the Trustee may use CUSIP numbers and corresponding ISIN numbers in notices of redemption as a convenience to Holders. No representation is made as to the
accuracy of such numbers either as printed on the Notes or as contained in any notice of redemption and reliance may be placed only on the other identification numbers placed thereon. 

18. Governing Law. THE INDENTURE AND THIS NOTE SHALL BE GOVERNED BY, AND CONSTRUED IN ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW
YORK. 
 19. Successor Entity. In the event a successor assumes all the obligations of the Company under the Notes and the Indenture,
pursuant to the terms thereof, the Company will be released from all such obligations. 
 The Company will furnish to any Holder upon
written request and without charge a copy of the Indenture. Requests may be made to: 
 Whiting Petroleum Corporation 

1700 Broadway, Suite 2300 

Denver, Colorado 80290-2300 

Attention: Chief Financial Officer 

  
 A-8 

 ASSIGNMENT FORM 

To assign this Note, fill in the form below: 

I or we assign and transfer this Note to 
  

 
 Print or type assignee’s name,
address and zip code) 
  
  

(Insert assignee’s soc. sec. or tax I.D. No.) 

and irrevocably appoint
                                        
agent to transfer this Note on the books of the Company. The agent may substitute another to act for him. 
  

									
	Date:	  	 	  		 	Your Signature:	  	 
		  		  		 	                                Sign exactly 
as your name appears on the other side of this Note.

  
 A-9 

 OPTION OF HOLDER TO ELECT PURCHASE 

If you want to elect to have this Note purchased by the Company pursuant to Section 4.10 or 4.15 of the Second Supplemental Indenture,
check the box below: 
  

 ̈ 

If you want to elect to have only part of this Note purchased by the Company pursuant to Section 4.10 or Section 4.15 of the Second
Supplemental Indenture, state the amount (in minimum denomination of equal to $2,000 or any integral $1,000 multiple in excess thereof) you elected to have purchased:
$                         
  

									
	Date:	  	 	  		 	Your Signature:	  	 
		  		  		 	                                (Sign exactly 
as your name appears on the other side of this Note)

  

					
		  	Soc. Sec. or Tax Identification No.:	 	 
		  		 	

  

					
	Signature Guarantee:	  	 	  	
		  	(Signature must be guaranteed)	  	

 Signatures must be guaranteed by an “eligible guarantor institution” meeting the requirements of the
Registrar, which requirements include membership or participation in the Security Transfer Agent Medallion Program (“STAMP”) or such other “signature guarantee program” as may be determined by the Registrar in addition to, or in
substitution for, STAMP, all in accordance with the Securities Exchange Act of 1934, as amended. 

  
 A-10 

 [TO BE ATTACHED TO GLOBAL SECURITY] 

SCHEDULE OF INCREASES OR DECREASES IN GLOBAL SECURITY 

The following increases or decreases in this Global Security have been made: 
  

									
	 Date
	 	Amount of
decrease in
Principal
Amount of this
Global Security	 	Amount of
increase in
Principal
Amount of this
Global Security	 	Principal
Amount of this
Global Security
following such
decrease or
increase	 	Signature of
authorized
officer
of Trustee
		 		 		 		 	
		 		 		 		 	

  
 A-11 

 EXHIBIT B 
  

 
  

WHITING PETROLEUM CORPORATION 

And 
 the Guarantors named herein

  
  

5.750% SENIOR NOTES DUE 2021 
  

 
 FORM OF
SUPPLEMENTAL INDENTURE 
 AND AMENDMENT — SUBSIDIARY GUARANTEE 

DATED AS OF
                             ,          

 
  

THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A., 

Trustee 
  

 
  

 
  

  
 B-1 

 This SUPPLEMENTAL INDENTURE, dated as of
                             ,          is among
Whiting Petroleum Corporation, a Delaware corporation (the “Company”), each of the parties identified under the caption “Guarantors” on the signature page hereto (the “Guarantors”) and The Bank of New York Mellon Trust
Company, N.A., a national banking association, as Trustee. 
 RECITALS 

WHEREAS, the Company, the initial Guarantors and the Trustee entered into a Senior Indenture, dated as of September 12, 2013 (the
“Original Indenture”), as supplemented and amended by the Second Supplemental Indenture (herein so called) thereto, dated as of September 12, 2013 (the Original Indenture as so supplemented and amended being called herein the
“Indenture”), pursuant to which the Company has issued $800,000,000 in principal amount of 5.750% Senior Notes due 2021 (the “Notes”); and 

WHEREAS, Section 901(vii) of the Original Indenture provides that the Company, the Guarantors and the Trustee may amend or supplement the
Indenture in order to add Guarantors with respect to the Notes, without the consent of the Holders of the Notes; and 
 WHEREAS, all acts
and things prescribed by the Indenture, by law and by the Certificate of Incorporation and the Bylaws (or comparable constituent documents) of the Company, of the Guarantors and of the Trustee necessary to make this Supplemental Indenture a valid
instrument legally binding on the Company, the Guarantors and the Trustee, in accordance with its terms, have been duly done and performed; 

NOW, THEREFORE, to comply with the provisions of the Indenture and in consideration of the above premises, the Company, the Guarantors and the
Trustee covenant and agree for the equal and proportionate benefit of the respective Holders of the Notes as follows: 
 ARTICLE 1 

Section 1.01. This Supplemental Indenture is supplemental to the Indenture and does and shall be deemed to form a part of, and shall be
construed in connection with and as part of, the Indenture for any and all purposes. 
 Section 1.02. This Supplemental Indenture shall
become effective immediately upon its execution and delivery by each of the Company, the Guarantors and the Trustee. 
 ARTICLE 2 

From this date, by executing this Supplemental Indenture, the Guarantors whose signatures appear below shall be Guarantors with respect to the
Notes on terms contemplated by and subject to the provisions of Article 10 of the Indenture. 
 ARTICLE 3 

Section 3.01. Except as specifically modified herein, the Indenture and the Notes are in all respects ratified and confirmed (mutatis
mutandis) and shall remain in full force and effect in accordance with their terms with all capitalized terms used herein without definition having the same respective meanings ascribed to them as in the Indenture. 

  
 B-2 

 Section 3.02. Except as otherwise expressly provided herein, no duties, responsibilities or
liabilities are assumed, or shall be construed to be assumed, by the Trustee by reason of this Supplemental Indenture. This Supplemental Indenture is executed and accepted by the Trustee subject to all the terms and conditions set forth in the
Indenture with the same force and effect as if those terms and conditions were repeated at length herein and made applicable to the Trustee with respect hereto. 

Section 3.03. THIS SUPPLEMENTAL INDENTURE SHALL BE GOVERNED BY, AND CONSTRUED IN ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW YORK. 

Section 3.04. The parties may sign any number of copies of this Supplemental Indenture. Each signed copy shall be an original, but all of
such executed copies together shall represent the same agreement. 
 [NEXT PAGE IS SIGNATURE PAGE] 

  
 B-3 

 IN WITNESS WHEREOF, the parties hereto have caused this Supplemental Indenture to be duly
executed, all as of the date first written above. 
  

			
	WHITING PETROLEUM CORPORATION
		
	By	 	 
		 	 Name:
 Title:

  

			
	 GUARANTORS

[                          
              ]

		
	By	 	 
		 	 Name:
 Title:

  

			
	 THE BANK OF NEW YORK MELLON
 TRUST
COMPANY, N.A., as Trustee

		
	By	 	 

  
 B-4

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