EX-10.4





 Exhibit 10.4 

Bank of Montreal 
 55 Bloor Street West, 18th Floor 

Toronto, Ontario M4W 1A5 
 May 11, 2020

 To: Pioneer Natural Resources Company 
 777 Hidden
Ridge 
 Irving, Texas 75038 
 Attention:
     
 Telephone No.: 
 Facsimile No.: 

Re: Base Call Option Transaction 
 The
purpose of this letter agreement (this “Confirmation”) is to confirm the terms and conditions of the call option transaction entered into between Bank of Montreal (“Dealer”), and Pioneer Natural Resources
Company (“Counterparty”) as of the Trade Date specified below (the “Transaction”). Dealer is acting as principal in the Transaction and BMO Capital Markets Corp. (“Agent”), its affiliate, is acting
as agent for the Transaction solely in connection with Rule 15a-6 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”). This letter agreement constitutes a
“Confirmation” as referred to in the ISDA Master Agreement specified below. Each party further agrees that this Confirmation together with the Agreement evidence a complete binding agreement between Counterparty and Dealer as to the
subject matter and terms of the Transaction to which this Confirmation relates, and shall supersede all prior or contemporaneous written or oral communications with respect thereto. 

The definitions and provisions contained in the 2002 ISDA Equity Derivatives Definitions (the “Equity Definitions”), as
published by the International Swaps and Derivatives Association, Inc. (“ISDA”) are incorporated into this Confirmation. In the event of any inconsistency between the Equity Definitions and this Confirmation, this Confirmation shall
govern. Certain defined terms used herein are based on terms that are defined in the Offering Memorandum dated May 11, 2020 (the “Offering Memorandum”) relating to the 0.250% Convertible Senior Notes due 2025 (as originally
issued by Counterparty, the “Convertible Notes” and each USD 1,000 principal amount of Convertible Notes, a “Convertible Note”) issued by Counterparty in an aggregate initial principal amount of USD1,150,000,000 (as
increased by up to an aggregate principal amount of USD172,500,000 if and to the extent that the Initial Purchasers (as defined herein) exercise their option to purchase additional Convertible Notes pursuant to the Purchase Agreement (as defined
herein)) pursuant to an Indenture to be dated May 14, 2020 between Counterparty and Wells Fargo Bank, National Association, as trustee (the “Indenture”). In the event of any inconsistency between the terms defined in the
Offering Memorandum, the Indenture and this Confirmation, this Confirmation shall govern. The parties acknowledge that this Confirmation is entered into on the date hereof with the understanding that (i) definitions set forth in the Indenture
which are also defined herein by reference to the Indenture and (ii) sections of the Indenture that are referred to herein will conform to the descriptions thereof in the Offering Memorandum. If any such definitions in the Indenture or any such
sections of the Indenture differ from the descriptions thereof in the Offering Memorandum, the descriptions thereof in the Offering Memorandum will govern for purposes of this Confirmation. The parties further acknowledge that the Indenture section
numbers used herein are based on the draft of the Indenture last reviewed by Dealer as of the date of this Confirmation, and if any such section numbers are changed in the Indenture as executed, the parties will amend this Confirmation in good faith
to preserve the intent of the parties. Subject to the foregoing, references to the Indenture herein are references to the Indenture as in effect on the date of its execution, and if the Indenture is amended or supplemented following such date (other
than any amendment or supplement (x) pursuant to Section 10.01(h) of the Indenture that, as determined by the Calculation Agent, conforms the Indenture to the description of Convertible Notes in the Offering Memorandum or (y) pursuant
to Section 14.07 of the Indenture, subject, in the case of this clause (y), to the second paragraph under “Method of Adjustment” in Section 3), any such amendment or supplement will be disregarded for purposes of this
Confirmation (other than as provided in Section 9.(i)(iii) below) unless the parties agree otherwise in writing. 












 Each party is hereby advised, and each such party acknowledges, that the other party has
engaged in, or refrained from engaging in, substantial financial transactions and has taken other material actions in reliance upon the parties’ entry into the Transaction to which this Confirmation relates on the terms and conditions set forth
below. 
 1.    This Confirmation evidences a complete and binding agreement between Dealer and Counterparty as to the terms of the
Transaction to which this Confirmation relates. This Confirmation shall supplement, form a part of, and be subject to an agreement in the form of the 2002 ISDA Master Agreement (the “Agreement”) as if Dealer and Counterparty had
executed an agreement in such form (but without any Schedule except for the election of the laws of the State of New York as the governing law (without reference to choice of law doctrine)) on the Trade Date. In the event of any inconsistency
between provisions of the Agreement and this Confirmation, this Confirmation will prevail for the purpose of the Transaction to which this Confirmation relates. The parties hereby agree that no transaction other than the Transaction to which this
Confirmation relates shall be governed by the Agreement. 
 2.    The Transaction constitutes a Share Option Transaction for purposes of
the Equity Definitions. The terms of the particular Transaction to which this Confirmation relates are as follows: 
 General
Terms. 
  

			
	 Trade Date:
	  	May 11, 2020
		
	 Option Style:
	  	“Modified American”, as described under “Procedures for Exercise” below
		
	 Option Type:
	  	Call
		
	 Buyer:
	  	Counterparty
		
	 Seller:
	  	Dealer
		
	 Shares:
	  	The common stock of Counterparty, par value USD 0.01 per share (Exchange symbol “PXD”).
		
	 Number of Options:
	  	1,150,000. For the avoidance of doubt, the Number of Options shall be reduced by any Options exercised by Counterparty. In no event will the Number of Options be less than zero.
		
	 Applicable Percentage:
	  	25%
		
	 Option Entitlement:
	  	A number equal to the product of the Applicable Percentage and 9.1098.
		
	 Strike Price:
	  	USD 109.7719
		
	 Cap Price:
	  	USD 156.2140
		
	 Rounding of Strike Price/
	  	
	 Cap Price/Option Entitlement:
	  	In connection with any adjustment to the Option Entitlement, Strike Price or Cap Price, such term shall be rounded by the Calculation Agent in accordance with the provisions of the Indenture relating to rounding of the
“Conversion Price” (in the case of the Strike Price or Cap Price) or the “Conversion Rate” (in the case of the Option Entitlement) (each as defined in the Indenture).
		
	 Premium:
	  	USD 24,581,250
		
	 Premium Payment Date:
	  	May 14, 2020


  
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	 Exchange:
	  	The New York Stock Exchange
		
	 Related Exchange(s):
	  	All Exchanges
		
	 Excluded Provisions:
	  	Section 14.04(i) and Section 14.03 of the Indenture.
		
	 Procedures for Exercise.
	  	
		
	 Conversion Date:
	  	With respect to any conversion of a Convertible Note (other than any conversion of Convertible Notes with a Conversion Date occurring prior to the Free Convertibility Date (any such conversion, an “Early
Conversion”), to which the provisions of Section 9.(i)(i) of this Confirmation shall apply), the date on which the Holder (as such term is defined in the Indenture) of such Convertible Note satisfies all of the requirements for
conversion thereof as set forth in Section 14.02(b) of the Indenture; provided that no Conversion Date shall be deemed to have occurred and no Option exercised or deemed exercised with respect to Exchanged Securities.
		
	 Exchanged Securities:
	  	With respect to any Conversion Date (including any Early Conversion), any Convertible Notes with respect to which Counterparty makes the election described in Section 14.12 of the Indenture, as long as Counterparty does not
submit a Notice of Exercise in respect thereof.
		
	 Free Convertibility Date:
	  	February 15, 2025
		
	 Expiration Time:
	  	The Valuation Time
		
	 Expiration Date:
	  	May 15, 2025, subject to earlier exercise.
		
	 Multiple Exercise:
	  	Applicable, as described under “Automatic Exercise” below.
		
	 Automatic Exercise:
	  	Notwithstanding Section 3.4 of the Equity Definitions, on each Conversion Date occurring on or after the Free Convertibility Date, in respect of which a Notice of Conversion that is effective as to Counterparty has been
delivered by the relevant converting Holder, a number of Options equal to the number of Convertible Notes in denominations of USD 1,000 as to which such Conversion Date has occurred shall be deemed to be automatically exercised; provided that
such Options shall be exercised or deemed exercised only if Counterparty has provided a Notice of Exercise to Dealer in accordance with “Notice of Exercise” below.
		
		  	Notwithstanding the foregoing, in no event shall the number of Options that are exercised or deemed exercised hereunder exceed the Number of Options.
		
	 Notice of Exercise:
	  	Notwithstanding anything to the contrary in the Equity Definitions or under “Automatic Exercise” above, in order to exercise any Options relating to Convertible Notes with a Conversion Date occurring on or after
the


  
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		  	Free Convertibility Date, Counterparty must notify Dealer in writing before 5:00 p.m. (New York City time) on the Scheduled Valid Day immediately preceding the Expiration Date specifying the number of such Options; provided
that if the Relevant Settlement Method for such Options is (x) Net Share Settlement and the Specified Cash Amount (as defined below) is not USD 1,000, (y) Cash Settlement or (z) Combination Settlement, Dealer shall have received a separate
notice (the “Notice of Final Settlement Method”) in respect of all such Convertible Notes before 5:00 p.m. (New York City time) on the Free Convertibility Date specifying (1) the Relevant Settlement Method for such Options, and
(2) if the settlement method for the related Convertible Notes is not Settlement in Shares or Settlement in Cash (each as defined below), the fixed amount of cash per Convertible Note that Counterparty has elected to deliver to Holders (as such
term is defined in the Indenture) of the related Convertible Notes (the “Specified Cash Amount”).
		
		  	If Counterparty fails to give such notice of exercise with a Conversion Date occurring on or after the Free Convertibility Date, Automatic Exercise shall apply to the then-current Number of Options, so long as Counterparty has
delivered a Notice of Final Settlement Method for such Options.
		
		  	Counterparty acknowledges its responsibilities under applicable securities laws, and in particular Section 9 and Section 10(b) of the Exchange Act (as defined below) and the rules and regulations thereunder, in respect of
any election of a settlement method with respect to the Convertible Notes.
		
	 Valuation Time:
	  	At the close of trading of the regular trading session on the Exchange; provided that if the principal trading session is extended, the Calculation Agent shall determine the Valuation Time in its reasonable
discretion.
		
	 Market Disruption Event:
	  	Section 6.3(a) of the Equity Definitions is hereby replaced in its entirety by the following:
		
		  	“‘Market Disruption Event’ means, in respect of a Share, (i) a failure by the primary United States national or regional securities exchange or market on which the Shares are listed or admitted for trading to
open for trading during its regular trading session or (ii) the occurrence or existence prior to 1:00 p.m. (New York City time) on any Scheduled Valid Day for the Shares for more than one half-hour period in the aggregate during regular trading
hours of any suspension or limitation imposed on trading (by reason of movements in price exceeding limits permitted by the relevant stock exchange or otherwise) in the Shares or in any options contracts or futures contracts relating to the
Shares.”


  
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 Settlement Terms. 

 

			
		
	 Settlement Method:
	  	For any Option, Net Share Settlement; provided that if the Relevant Settlement Method set forth below for such Option is not Net Share Settlement, then the Settlement Method for such Option shall be such Relevant Settlement
Method, but only if Counterparty shall have notified Dealer of the Relevant Settlement Method in the Notice of Final Settlement Method for such Option.
		
	 Relevant Settlement Method:
	  	In respect of any Option:
		
		  	(i) if Counterparty has elected to settle its conversion obligations in respect of the related Convertible Note (A) entirely in Shares pursuant to Section 14.02(a)(iv)(A) of the Indenture (together with cash in lieu of
fractional Shares) (such settlement method, “Settlement in Shares”), (B) in a combination of cash and Shares pursuant to Section 14.02(a)(iv)(C) of the Indenture with a Specified Cash Amount less than USD 1,000 (such settlement
method, “Low Cash Combination Settlement”) or (C) in a combination of cash and Shares pursuant to Section 14.02(a)(iv)(C) of the Indenture with a Specified Cash Amount equal to USD 1,000, then, in each case, the
Relevant Settlement Method for such Option shall be Net Share Settlement;
		
		  	(ii) if Counterparty has elected to settle its conversion obligations in respect of the related Convertible Note in a combination of cash and Shares pursuant to Section 14.02(a)(iv)(C) of the Indenture with a Specified Cash
Amount greater than USD 1,000, then the Relevant Settlement Method for such Option shall be Combination Settlement; and
		
		  	(iii) if Counterparty has elected to settle its conversion obligations in respect of the related Convertible Note entirely in cash pursuant to Section 14.02(a)(iv)(B) of the Indenture (such settlement method,
“Settlement in Cash”), then the Relevant Settlement Method for such Option shall be Cash Settlement.
		
	 Net Share Settlement:
	  	If Net Share Settlement is applicable to any Option exercised or deemed exercised hereunder, Dealer will deliver to Counterparty, on the relevant Settlement Date for each such Option, a number of Shares (the “Net Share
Settlement Amount”) equal to the sum, for each Valid Day during the Settlement Averaging Period for each such Option, of (i) (a) the Daily Option Value for such Valid Day, divided by (b) the Relevant Price on such Valid
Day, divided by (ii) the number of Valid Days in the Settlement Averaging Period; provided that in no event shall the Net Share Settlement Amount for any Option exceed a number of Shares equal to the Applicable Limit for such
Option divided by the Applicable Limit Price on the Settlement Date for such Option.


  
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		  	Dealer will pay cash in lieu of delivering any fractional Shares to be delivered with respect to any Net Share Settlement Amount valued at the Relevant Price for the last Valid Day of the Settlement Averaging
Period.
		
	 Combination Settlement:
	  	If Combination Settlement is applicable to any Option exercised or deemed exercised hereunder, Dealer will pay or deliver, as the case may be, to Counterparty, on the relevant Settlement Date for each such
Option:
		
		  	 (i) cash (the “Combination Settlement Cash Amount”) equal to
the sum, for each Valid Day during the Settlement Averaging Period for such Option, of (A) an amount (the “Daily Combination Settlement Cash Amount”) equal to the lesser of (1) the product of (x) the Applicable
Percentage and (y) the Specified Cash Amount minus USD 1,000 and (2) the Daily Option Value, divided by (B) the number of Valid Days in the Settlement Averaging Period; provided that if the calculation in clause
(A) above results in zero or a negative number for any Valid Day, the Daily Combination Settlement Cash Amount for such Valid Day shall be deemed to be zero; and

		
		  	 (ii)  Shares (the “Combination Settlement Share Amount”)
equal to the sum, for each Valid Day during the Settlement Averaging Period for such Option, of a number of Shares for such Valid Day (the “Daily Combination Settlement Share Amount”) equal to (A) (1) the Daily Option Value on
such Valid Day minus the Daily Combination Settlement Cash Amount for such Valid Day, divided by (2) the Relevant Price on such Valid Day, divided by (B) the number of Valid Days in the Settlement Averaging Period;
provided that if the calculation in sub-clause (A)(1) above results in zero or a negative number for any Valid Day, the Daily Combination Settlement Share Amount for such Valid Day shall be deemed to be
zero;

		
		  	provided that in no event shall the sum of (x) the Combination Settlement Cash Amount for any Option and (y) the Combination Settlement Share Amount for such Option multiplied by the
Applicable Limit Price on the Settlement Date for such Option, exceed the Applicable Limit for such Option.
		
		  	Dealer will pay cash in lieu of delivering any fractional Shares to be delivered with respect to any Combination Settlement Share Amount valued at the Relevant Price for the last Valid Day of the Settlement Averaging
Period.
		
	 Cash Settlement:
	  	If Cash Settlement is applicable to any Option exercised or deemed exercised hereunder, in lieu of Section 8.1 of the Equity Definitions, Dealer will pay to Counterparty,


  
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		  	on the relevant Settlement Date for each such Option, an amount of cash (the “Cash Settlement Amount”) equal to the sum, for each Valid Day during the Settlement Averaging Period for such Option, of (i) the
Daily Option Value for such Valid Day, divided by (ii) the number of Valid Days in the Settlement Averaging Period.
		
	 Daily Option Value:
	  	For any Valid Day, an amount equal to (i) the Option Entitlement on such Valid Day, multiplied by (ii) (A) the lesser of the Relevant Price on such Valid Day and the Cap Price, less (B) the Strike Price
on such Valid Day; provided that if the calculation contained in clause (ii) above results in a negative number, the Daily Option Value for such Valid Day shall be deemed to be zero. In no event will the Daily Option Value be less than
zero.
		
	 Applicable Limit:
	  	For any Option, an amount of cash equal to the Applicable Percentage multiplied by the excess of (i) the aggregate of (A) the amount of cash, if any, paid to the Holder of the related Convertible Note upon
conversion of such Convertible Note and (B) the number of Shares, if any, delivered to the Holder of the related Convertible Note upon conversion of such Convertible Note multiplied by the Applicable Limit Price on the Settlement Date
for such Option, over (ii) USD 1,000.
		
	 Applicable Limit Price:
	  	On any day, the opening price as displayed under the heading “Op” on Bloomberg page PXD <equity> (or any successor thereto).
		
	 Valid Day:
	  	A day on which (i) there is no Market Disruption Event and (ii) trading in the Shares generally occurs on the Exchange or, if the Shares are not then listed on the Exchange, on the principal other United States national or
regional securities exchange on which the Shares are then listed or, if the Shares are not then listed on a United States national or regional securities exchange, on the principal other market on which the Shares are then listed or admitted for
trading. If the Shares are not so listed or admitted for trading, “Valid Day” means a Business Day.
		
	 Scheduled Valid Day:
	  	A day that is scheduled to be a Valid Day on the principal United States national or regional securities exchange or market on which the Shares are listed or admitted for trading. If the Shares are not so listed or admitted for
trading, “Scheduled Valid Day” means a Business Day.
		
	 Business Day:
	  	Any day other than a Saturday, a Sunday or a day on which the Federal Reserve Bank of New York is authorized or required by law or executive order to close or be closed.
		
	 Relevant Price:
	  	On any Valid Day, the per Share volume-weighted average price as displayed under the heading “Bloomberg VWAP” on Bloomberg page PXD <equity> AQR (or its equivalent successor if such page is not available)
in


  
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		  	respect of the period from the scheduled opening time of the Exchange to the Scheduled Closing Time of the Exchange on such Valid Day (or if such volume-weighted average price is unavailable at such time, the market value of one
Share on such Valid Day, as determined by the Calculation Agent using a volume-weighted average method). The Relevant Price will be determined without regard to after-hours trading or any other trading outside of the regular trading session trading
hours.
		
	 Settlement Averaging Period:
	  	For any Option and regardless of the Settlement Method applicable to such Option, the 25 consecutive Valid Days commencing on, and including, the 26th Scheduled Valid Day immediately prior to the Expiration Date.
		
	 Settlement Date:
	  	For any Option, the second Business Day immediately following the final Valid Day of the Settlement Averaging Period for such Option.
		
	 Settlement Currency:
	  	USD
		
	 Other Applicable Provisions:
	  	The provisions of Sections 9.1(c), 9.8, 9.9 and 9.11 of the Equity Definitions will be applicable, except that all references in such provisions to “Physically-settled” shall be read as references to “Share
Settled”. “Share Settled” in relation to any Option means that Net Share Settlement or Combination Settlement is applicable to that Option.
		
	 Representation and Agreement:
	  	Notwithstanding anything to the contrary in the Equity Definitions (including, but not limited to, Section 9.11 thereof), the parties acknowledge that (i) any Shares delivered to Counterparty shall be, upon delivery,
subject to restrictions and limitations arising from Counterparty’s status as issuer of the Shares under applicable securities laws, (ii) Dealer may deliver any Shares required to be delivered hereunder in certificated form in lieu of
delivery through the Clearance System and (iii) any Shares delivered to Counterparty may be “restricted securities” (as defined in Rule 144 under the Securities Act of 1933, as amended (the “Securities
Act”)).
	
	 3.  Additional Terms applicable to the
Transaction.

	
	 Adjustments applicable to the Transaction:

		
	 Potential Adjustment Events:
	  	Notwithstanding Section 11.2(e) of the Equity Definitions, a “Potential Adjustment Event” means an occurrence of any event or condition, as set forth in any Dilution Adjustment Provision, that would result in an
adjustment under the Indenture to the “Conversion Rate” or the composition of a “unit of Reference Property” or to any “Last Reported Sale Price” , “Daily VWAP,” “Daily Conversion Value” or
“Daily Settlement Amount” (each as defined in the Indenture). For the avoidance of doubt, Dealer shall not have any delivery or payment obligation hereunder, and no adjustment shall be made to the terms


  
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		  	of the Transaction, on account of (x) any distribution of cash, property or securities by Counterparty to holders of the Convertible Notes (upon conversion or otherwise) or (y) any other transaction in which
holders of the Convertible Notes are entitled to participate, in each case, in lieu of an adjustment under the Indenture of the type referred to in the immediately preceding sentence (including, without limitation, pursuant to the fourth sentence of
the first paragraph of Section 14.04(c) of the Indenture or the fifth sentence of Section 14.04(d) of the Indenture).
		
	 Method of Adjustment:
	  	Calculation Agent Adjustment, which means that, notwithstanding Section 11.2(c) of the Equity Definitions, upon any Potential Adjustment Event, the Calculation Agent shall make a corresponding adjustment to any one
or more of the Strike Price, Number of Options, Option Entitlement and any other variable relevant to the exercise, settlement or payment for the Transaction.
		
		  	Notwithstanding the foregoing and “Consequences of Merger Events / Tender Offers” below:
		
		  	 (i) if the Calculation Agent in good faith disagrees with any adjustment to the
Convertible Notes that involves an exercise of discretion by Counterparty or its board of directors (including, without limitation, pursuant to Section 14.05 of the Indenture, Section 14.07 of the Indenture or any supplemental indenture
entered into thereunder or in connection with any proportional adjustment or the determination of the fair value of any securities, property, rights or other assets), then in each such case, the Calculation Agent will determine the adjustment to be
made to any one or more of the Strike Price, Number of Options, Option Entitlement and any other variable relevant to the exercise, settlement or payment for the Transaction in a commercially reasonable manner; provided that, notwithstanding
the foregoing, if any Potential Adjustment Event occurs during the Settlement Averaging Period but no adjustment was made to any Convertible Note under the Indenture because the relevant Holder (as such term is defined in the Indenture) was deemed
to be a record owner of the underlying Shares on the related Conversion Date, then the Calculation Agent shall make an adjustment, as determined by it, to the terms hereof in order to account for such Potential Adjustment Event;

		
		  	 (ii)  in connection with any Potential Adjustment Event as a result of an
event or condition set forth in Section 14.04(b) of the Indenture or Section 14.04(c) of the Indenture where, in either



  
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		  	 case, the period for determining “Y” (as such term is used in Section 14.04(b) of the Indenture) or
“SP0” (as such term is used in Section 14.04(c) of the Indenture), as the case may be, begins before Counterparty has publicly announced the event or condition giving rise to
such Potential Adjustment Event, then the Calculation Agent shall have the right to adjust any variable relevant to the exercise, settlement or payment for the Transaction as appropriate to reflect the costs (including, but not limited to, hedging
mismatches and market losses) and expenses incurred by Dealer in connection with its hedging activities as a result of such event or condition not having been publicly announced prior to the beginning of such period; and

		
		  	 (iii)  if any Potential Adjustment Event is declared and (a) the event or
condition giving rise to such Potential Adjustment Event is subsequently amended, modified, cancelled or abandoned, (b) the “Conversion Rate” (as defined in the Indenture) is otherwise not adjusted at the time or in the manner
contemplated by the relevant Dilution Adjustment Provision based on such declaration or (c) the “Conversion Rate” (as defined in the Indenture) is adjusted as a result of such Potential Adjustment Event and subsequently re-adjusted (each of clauses (a), (b) and (c), a “Potential Adjustment Event Change”) then, in each case, the Calculation Agent shall have the right to adjust any variable relevant to the exercise,
settlement or payment for the Transaction as appropriate to reflect the costs (including, but not limited to, hedging mismatches and market losses) and expenses incurred by Dealer in connection with its hedging activities as a result of such
Potential Adjustment Event Change.

		
	 Dilution Adjustment Provisions:
	  	Sections 14.04(a), (b), (c), (d) and (e) and Section 14.05 of the Indenture.
		
	 Extraordinary Events applicable to the Transaction:
	  	
		
	 Merger Events:
	  	Applicable; provided that notwithstanding Section 12.1(b) of the Equity Definitions, a “Merger Event” means the occurrence of any event or condition set forth in the definition of “Merger Event” in
Section 14.07(a) of the Indenture.
		
	 Tender Offers:
	  	Applicable; provided that notwithstanding Section 12.1(d) of the Equity Definitions, a “Tender Offer” means the occurrence of any event or condition set forth in Section 14.04(e) of the
Indenture.


  
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	 Consequences of Merger Events/ Tender Offers:
	  	Notwithstanding Section 12.2 and Section 12.3 of the Equity Definitions, upon the occurrence of a Merger Event or a Tender Offer, the Calculation Agent shall make a corresponding adjustment in respect of any adjustment
under the Indenture to any one or more of the nature of the Shares (in the case of a Merger Event), Strike Price, Number of Options, Option Entitlement and any other variable relevant to the exercise, settlement or payment for the Transaction,
subject to the second paragraph under “Method of Adjustment”; provided, however, that such adjustment shall be made without regard to any adjustment to the Conversion Rate pursuant to any Excluded Provision; provided further
that if, with respect to a Merger Event or a Tender Offer, (i) the consideration for the Shares includes (or, at the option of a holder of Shares, may include) shares of an entity or person that is not a corporation or is not organized under
the laws of the United States, any State thereof or the District of Columbia or (ii) the Counterparty to the Transaction following such Merger Event or Tender Offer will not be a corporation organized under the laws of the United States, any
State thereof or the District of Columbia, then, in either case, such Merger Event or Tender Offer shall constitute an Additional Termination Event with respect to which the Transaction is the sole Affected Transaction and Counterparty is the sole
Affected Party, and Dealer shall be the party entitled to designate an Early Termination Date pursuant to Section 6(b) of the Agreement and to determine the amount payable pursuant to Section 6(e) of the Agreement; provided further
that, for the avoidance of doubt, adjustments shall be made pursuant to the provisions set forth above regardless of whether any Merger Event or Tender Offer gives rise to an Early Conversion.
		
	 Consequences of Announcement Events:
	  	Modified Calculation Agent Adjustment as set forth in Section 12.3(d) of the Equity Definitions; provided that, in respect of an Announcement Event, (x) references to “Tender Offer” shall be replaced by
references to “Announcement Event” and references to “Tender Offer Date” shall be replaced by references to “date of such Announcement Event”, (y) the word “shall” in the second line shall be replaced with
“may” and the phrase “exercise, settlement, payment or any other terms of the Transaction (including, without limitation, the spread)” shall be replaced with the phrase “Cap Price (provided that in no event shall the Cap
Price be less than the Strike Price)”, and (z) for the avoidance of doubt, the Calculation Agent may determine whether the relevant Announcement Event has had an economic effect on the Transaction (and, if so, may adjust the Cap Price
accordingly) on one or more occasions on or after the date of the Announcement Event up to, and including, the Expiration Date, any Early Termination Date and/or any


  
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		  	other date of cancellation, it being understood that any adjustment in respect of an Announcement Event shall take into account any earlier adjustment relating to the same Announcement Event and shall not be duplicative with any
other adjustment or cancellation valuation made pursuant to this Confirmation, the Equity Definitions or the Agreement. Section 12.3(d) of the Equity Definitions is hereby modified by (x) adding the words “whether within a
commercially reasonable (as determined by the Calculation Agent) period of time prior to or after the Announcement Event” after “Transaction)” in the sixth line thereof and (y) deleting the text beginning “Cancellation
...” on the 11th line thereof through the end of the paragraph and inserting “such event shall constitute an Additional Termination Event with respect to which the Transaction is the sole Affected Transaction and Counterparty is the
sole Affected Party, and Dealer shall be the party entitled to designate an Early Termination Date pursuant to Section 6(b) of the Agreement and to determine the amount payable pursuant to Section 6(e) of the Agreement.” An
Announcement Event shall be an “Extraordinary Event” for purposes of the Equity Definitions, to which Article 12 of the Equity Definitions is applicable.
		
	 Announcement Event:
	  	(i) The public announcement by the Issuer, any affiliate or agent of the Issuer or any Valid Third-Party Entity, in each case, that has a material effect on the Shares and/or options relating to the Shares of (x) any
transaction or event that, if completed, would constitute a Merger Event or Tender Offer, (y) any potential acquisition or disposition by Issuer and/or its subsidiaries where the aggregate consideration exceeds 15% of the market capitalization
of Issuer as of the date of such announcement (an “Acquisition Transaction”) or (z) the intention to enter into a Merger Event or Tender Offer or an Acquisition Transaction, (ii) the public announcement by Issuer of an intention
to solicit or enter into, or to explore strategic alternatives or other similar undertaking that may include, a Merger Event or Tender Offer or an Acquisition Transaction or (iii) any subsequent public announcement by the Issuer, any affiliate
or agent of the Issuer or any Valid Third-Party Entity, as the case may be, of a change to a transaction or intention that is the subject of an announcement of the type described in clause (i) or (ii) of this sentence (including, without
limitation, a new announcement, whether or not by the same party, relating to such a transaction or intention or the announcement of a withdrawal from, or the abandonment or discontinuation of, such a transaction or intention), as determined by the
Calculation Agent. For the avoidance of doubt, the occurrence of an Announcement Event with respect to any transaction or intention shall not preclude the occurrence of a later Announcement Event with respect to such transaction or


  
 12 














			
		
		  	intention. For purposes of this definition of “Announcement Event,” (A) “Merger Event” shall mean such term as defined under Section 12.1(b) of the Equity Definitions (but, for the avoidance of doubt, the
remainder of the definition of “Merger Event” in Section 12.1(b) of the Equity Definitions following the definition of “Reverse Merger” therein shall be disregarded) and (B) “Tender Offer” shall mean such term as
defined under Section 12.1(d) of the Equity Definitions.
		
	 Valid Third-Party Entity:
	  	In respect of any transaction or event, any third party that is capable of entering into or consummating such transaction or event (it being understood and agreed that in determining whether such third party is capable or entering
into or consummating such transaction or event, if the Calculation Agent determines that the effect of the relevant announcement by such third party on the Shares and/or options relating to the Shares is material, then such third party shall be
deemed to be capable of entering into or consummating such transaction or event).
		
	 Nationalization, Insolvency or Delisting:
	  	Cancellation and Payment; provided that notwithstanding Section 12.6(c)(ii) of the Equity Definitions such event shall constitute an Additional Termination Event with respect to which the Transaction is the sole Affected
Transaction and Counterparty is the sole Affected Party, and Dealer shall be the party entitled to designate an Early Termination Date pursuant to Section 6(b) of the Agreement and to determine the amount payable pursuant to Section 6(e)
of the Agreement; provided further that, in addition to the provisions of Section 12.6(a)(iii) of the Equity Definitions, it will also constitute a Delisting if the Exchange is located in the United States and the Shares are not
immediately re-listed, re-traded or re-quoted on any of the New York Stock Exchange, The Nasdaq Global Select Market or The
Nasdaq Global Market (or their respective successors); if the Shares are immediately re-listed, re-traded or re-quoted on any of
the New York Stock Exchange, The Nasdaq Global Select Market or The Nasdaq Global Market (or their respective successors), such exchange or quotation system shall thereafter be deemed to be the Exchange.
		
	 Additional Disruption Events:
	  	
		
	 Change in Law:
	  	Applicable; provided that Section 12.9(a)(ii) of the Equity Definitions is hereby amended by (i) replacing the phrase “the interpretation” in the third line thereof with the phrase “, or public announcement
of, the formal or informal interpretation”, (ii) replacing the word “Shares” where it appears in clause (X) thereof with the words “Hedge Position” and (iii) replacing the parenthetical beginning after the word
“regulation” in the second line thereof the words “(including, for the avoidance of doubt and without limitation, (x) any tax law or (y) adoption, effectiveness or promulgation of new regulations authorized or mandated by
existing statute)”.


  
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	 Failure to Deliver:
	  	Applicable
		
	 Hedging Disruption:
	  	Applicable; provided that:
		
		  	 (i) Section 12.9(a)(v) of the Equity Definitions is hereby amended by
(a) inserting the following words at the end of clause (A) thereof: “in the manner contemplated by the Hedging Party on the Trade Date” and (b) inserting the following two phrases at the end of such Section:

		
		  	 “For the avoidance of doubt, the term “equity price risk” shall be deemed to include, but shall not be
limited to, stock price and volatility risk. And, for the further avoidance of doubt, any such transactions or assets referred to in phrases (A) or (B) above must be available on commercially reasonable pricing terms.”; and

		
		  	 (ii)  Section 12.9(b)(iii) of the Equity Definitions is hereby amended by
inserting in the third line thereof, after the words “to terminate the Transaction”, the words “or a portion of the Transaction affected by such Hedging Disruption”.

		
	 Increased Cost of Hedging:
	  	Applicable
		
	 Hedging Party:
	  	For all applicable Additional Disruption Events, Dealer.
		
	 Determining Party:
	  	For all applicable Extraordinary Events, Dealer.
		
	 Non-Reliance:
	  	Applicable
		
	 Agreements and Acknowledgments
	  	
	 Regarding Hedging Activities:
	  	Applicable
		
	 Additional Acknowledgments:
	  	Applicable
		
	 4.  Calculation Agent.
	  	Dealer. All calculations and determinations made hereunder by the Calculation Agent and Determining Party shall be made in good faith and in a commercially reasonable manner. If an Event of Default has occurred and is continuing
pursuant to Section 5(a)(vii) of the Agreement with respect to which Dealer is the Defaulting Party, Counterparty shall have the right to appoint a successor calculation agent to replace Dealer as Calculation Agent, which shall be a nationally
recognized third-party dealer in over-the-counter corporate equity derivatives. The Calculation Agent and Determining Party agree that they will promptly, upon written
notice from Counterparty, provide a statement displaying in reasonable detail the basis for such determination or calculation, as the case may be (it being understood that neither the Calculation Agent nor the Determining Party


  
 14 














			
		
		  	shall be required to disclose any confidential information or proprietary models used by it in connection with such determination or calculation, as the case may be) and use reasonable efforts to make available appropriate employees
or agents of the Dealer to explain the information provided pursuant to the foregoing.

  

	5.	 Account Details. 



 

	 	(a)	 Account for payments to Counterparty: 



Bank:            Bank of America, N.A. 

ABA#:      

Acct No.:      

Beneficiary:    Pioneer Natural Resources Co 

Account for delivery of Shares to Counterparty: 

To be provided by Counterparty. 
  

	 	(b)	 Account for payments to Dealer: 



Bank:            Bank of New York 

ABA#:      

Acct No.:     Acct Name: 

Account for delivery of Shares from Dealer: 

To be provided by Dealer. 
  

	6.	 Offices. 



 

	 	(a)	 The Office of Counterparty for the Transaction is: Inapplicable, Counterparty is not a Multibranch Party.



 The Office of Dealer for the Transaction is: Toronto, Ontario 

 

	7.	 Notices. 



 

	 	(a)	 Address for notices or communications to Counterparty: 



Pioneer Natural Resources Company 

777 Hidden Ridge 
 Irving, Texas
75038 
 Attention:      

Telephone No.:     

Facsimile No.:         

with a copy to: 
 Pioneer Natural
Resources Company 
 777 Hidden Ridge 

Irving, Texas 75038 
 Attention:
                 
 Telephone
No.:        
 Facsimile No.:         

  
 15 














	 	(b)	 Address for notices or communications to Dealer: 



Any and all notices, demands or communications of any kind relating to the Transaction between Dealer and Counterparty shall be transmitted
exclusively through the Agent at the following address: 
 Bank of Montreal 

55 Bloor Street West, 18th Floor 

Toronto, Ontario M4W 1A5 
 Canada

 Attention:     

Facsimile: Telephone:     

With a copy to: 
 Bank of Montreal

 100 King Street West, 20th Floor 

Toronto, Ontario M5X 1A1 
 Canada

 Attention:     

Facsimile:     

and 
 BMO Capital Markets Corp.

 3 Times Square 25th Floor 

New York, New York 10036 

Attention:     

Telephone:     

Facsimile:     
  

	8.	 Representations and Warranties of Counterparty. 



Each of the representations and warranties of Counterparty set forth in Section 1 of the Purchase Agreement (the “Purchase
Agreement”) dated as of May 11, 2020, between Counterparty and Credit Suisse Securities (USA) LLC and Goldman Sachs & Co. LLC, as representatives of the Initial Purchasers party thereto (the “Initial
Purchasers”), are true and correct and are hereby deemed to be repeated to Dealer as if set forth herein. Counterparty hereby further represents and warrants to Dealer on the date hereof and on and as of the Premium Payment Date that: 

 

	 	(a)	 Counterparty has all necessary corporate power and authority to execute, deliver and perform its obligations in
respect of the Transaction; such execution, delivery and performance have been duly authorized by all necessary corporate action on Counterparty’s part; and this Confirmation has been duly and validly executed and delivered by Counterparty and
constitutes its valid and binding obligation, enforceable against Counterparty in accordance with its terms, subject to applicable bankruptcy, insolvency, fraudulent conveyance, reorganization, moratorium and similar laws affecting creditors’
rights and remedies generally, and subject, as to enforceability, to general principles of equity, including principles of commercial reasonableness, good faith and fair dealing (regardless of whether enforcement is sought in a proceeding at law or
in equity) and except that rights to indemnification and contribution hereunder may be limited by federal or state securities laws or public policy relating thereto. 



  
 16 














	 	(b)	 Neither the execution and delivery of this Confirmation nor the incurrence or performance of obligations of
Counterparty hereunder will conflict with or result in a breach of the certificate of incorporation or by-laws (or any equivalent documents) of Counterparty, or any applicable law or regulation, or any order,
writ, injunction or decree of any court or governmental authority or agency, or any agreement or instrument to which Counterparty or any of its subsidiaries is a party or by which Counterparty or any of its subsidiaries is bound or to which
Counterparty or any of its subsidiaries is subject, or constitute a default under, or result in the creation of any lien under, any such agreement or instrument. 



 

	 	(c)	 No consent, approval, authorization, or order of, or filing with, any governmental agency or body or any court
is required in connection with the execution, delivery or performance by Counterparty of this Confirmation, except such as have been obtained or made and such as may be required under the Securities Act or state securities laws.



  

	 	(d)	 Counterparty is not and, after consummation of the transactions contemplated hereby, will not be required to
register as an “investment company” as such term is defined in the Investment Company Act of 1940, as amended. 


  

	 	(e)	 Counterparty is an “eligible contract participant” (as such term is defined in Section 1a(18) of
the Commodity Exchange Act, as amended, other than a person that is an eligible contract participant under Section 1a(18)(C) of the Commodity Exchange Act). 



 

	 	(f)	 Each of it and its affiliates is not, on the date hereof, in possession of any material non-public information with respect to Counterparty or the Shares. 


  

	 	(g)	 No state or local (including any non-U.S. jurisdiction’s) law,
rule, regulation or regulatory order applicable to the Shares would give rise to any reporting, consent, registration or other requirement (including without limitation a requirement to obtain prior approval from any person or entity) as a result of
Dealer or its affiliates owning or holding (however defined) Shares. 


  

	 	(h)	 Counterparty (A) is capable of evaluating investment risks independently, both in general and with regard
to all transactions and investment strategies involving a security or securities; (B) will exercise independent judgment in evaluating the recommendations of any broker-dealer or its associated persons, unless it has otherwise notified the
broker-dealer in writing; and (C) has total assets of at least USD 50 million. 


  

	 	(i)	 On and immediately after the Trade Date and the Premium Payment Date, (A) the value of the total assets of
Counterparty is greater than the sum of the total liabilities (including contingent liabilities) and the capital (as such terms are defined in Section 154 and Section 244 of the General Corporation Law of the State of Delaware) of
Counterparty, (B) the capital of Counterparty is adequate to conduct the business of Counterparty, and Counterparty’s entry into the Transaction will not impair its capital, (C) Counterparty has the ability to pay its debts and
obligations as such debts mature and does not intend to, or does not believe that it will, incur debt beyond its ability to pay as such debts mature, (D) Counterparty will be able to continue as a going concern; (E) Counterparty is not
“insolvent” (as such term is defined under Section 101(32) of the U.S. Bankruptcy Code (Title 11 of the United States Code) (the “Bankruptcy Code”)) and (F) Counterparty would be able to purchase the number of
Shares with respect to the Transaction in compliance with the laws of the jurisdiction of Counterparty’s incorporation (including the adequate surplus and capital requirements of Sections 154 and 160 of the General Corporation Law of the State
of Delaware). 


  

	 	(j)	 Counterparty acknowledges that the Transaction may constitute a purchase of its equity securities. Counterparty
further acknowledges that, pursuant to the provisions of the Coronavirus Aid, Relief and Economic Security Act (the “Cares Act”), the Counterparty will be required to agree to certain time-bound restrictions on its ability to
purchase its equity securities if it receives loans, loan guarantees or direct loans (as that term is defined in the Cares Act) under section 4003(b) of 



  
 17 














	 	
the Cares Act. Counterparty further acknowledges that it may be required to agree to certain time-bound restrictions on its ability to purchase its equity securities if it receives loans,
loan guarantees or direct loans (as that term is defined in the Cares Act) under programs or facilities established by the Board of Governors of the Federal Reserve System for the purpose of providing liquidity to the financial system. Accordingly,
Counterparty represents and warrants that it has not applied, and throughout the term of the Transaction shall not apply, for a loan, loan guarantee, direct loan (as that term is defined in the Cares Act) or other investment, or to receive any
financial assistance or relief (howsoever defined) under any program or facility that (a) is established under applicable law, including the Cares Act and the Federal Reserve Act, as amended, and (b) requires, as a condition of such loan,
loan guarantee, direct loan (as that term is defined in the Cares Act), investment, financial assistance or relief, that the Counterparty agree, attest, certify or warrant that it has not, as of the date specified in such condition, repurchased, or
will not repurchase, any equity security of Counterparty. Counterparty further represents and warrants that the Premium is not being paid, in whole or in part, directly or indirectly, with funds received under or pursuant to any program or facility,
including the U.S. Small Business Administration’s “Paycheck Protection Program”, that (a) is established under applicable law (whether in existence as of the Trade Date or subsequently enacted, adopted or amended), including
without limitation the CARES Act and the Federal Reserve Act, as amended, and (b) requires under such applicable law (or any regulation, guidance, interpretation or other pronouncement of a governmental authority with jurisdiction for such
program or facility) that such funds be used for specified or enumerated purposes that do not include the purchase of the Transaction (either by specific reference to the Transaction or by general reference to transactions with the attributes of the
Transaction in all relevant respects). 

  

	9.	 Other Provisions. 



 

	 	(a)	 Opinions. Counterparty shall deliver to Dealer an opinion of counsel, dated as of the Premium
Payment Date, with respect to the matters set forth in Sections 8(a) through (c) of this Confirmation. Delivery of such opinion to Dealer shall be a condition precedent for the purpose of Section 2(a)(iii) of the Agreement with respect to
each obligation of Dealer under Section 2(a)(i) of the Agreement. 


  

	 	(b)	 Repurchase Notices. Counterparty shall, on any day on which Counterparty effects any repurchase
of Shares, promptly give Dealer a written notice of such repurchase (a “Repurchase Notice”) on such day if following such repurchase, the number of outstanding Shares as determined on such day is (i) less than
145.2 million (in the case of the first such notice) or (ii) thereafter more than 15.6 million less than the number of Shares included in the immediately preceding Repurchase Notice. Counterparty agrees to indemnify and hold harmless
Dealer and its affiliates and their respective officers, directors, employees, affiliates, advisors, agents and controlling persons (each, an “Indemnified Person”) from and against any and all losses (including losses relating to
Dealer’s commercially reasonable hedging activities as a consequence of becoming, or of the risk of becoming, a Section 16 “insider”, including without limitation, any forbearance from commercially reasonable hedging activities
or cessation of commercially reasonable hedging activities and any losses in connection therewith with respect to the Transaction), claims, damages, judgments, liabilities and expenses (including reasonable attorney’s fees), joint or several,
which an Indemnified Person may become subject to, as a result of Counterparty’s failure to provide Dealer with a Repurchase Notice on the day and in the manner specified in this paragraph, and to reimburse, within 30 days, upon written
request, each of such Indemnified Persons for any reasonable legal or other expenses incurred in connection with investigating, preparing for, providing testimony or other evidence in connection with or defending any of the foregoing. If any suit,
action, proceeding (including any governmental or regulatory investigation), claim or demand shall be brought or asserted against the Indemnified Person as a result of Counterparty’s failure to provide Dealer with a Repurchase Notice in
accordance with this paragraph, such Indemnified Person shall promptly notify Counterparty in writing, and Counterparty, upon request of the Indemnified Person, shall retain counsel reasonably satisfactory to the Indemnified Person to represent the
Indemnified Person and any others 



  
 18 














	 	
Counterparty may designate in such proceeding and shall pay the fees and expenses of such counsel related to such proceeding. Counterparty shall not be liable for any settlement of any proceeding
contemplated by this paragraph that is effected without its written consent, but if settled with such consent or if there be a final judgment for the plaintiff, Counterparty agrees to indemnify any Indemnified Person from and against any loss or
liability by reason of such settlement or judgment. Counterparty shall not, without the prior written consent of the Indemnified Person, effect any settlement of any pending or threatened proceeding contemplated by this paragraph that is in respect
of which any Indemnified Person is or could have been a party and indemnity could have been sought hereunder by such Indemnified Person, unless such settlement includes an unconditional release of such Indemnified Person from all liability on claims
that are the subject matter of such proceeding on terms reasonably satisfactory to such Indemnified Person. If the indemnification provided for in this paragraph is unavailable to an Indemnified Person or insufficient in respect of any losses,
claims, damages or liabilities referred to therein, then Counterparty hereunder, in lieu of indemnifying such Indemnified Person thereunder, shall contribute to the amount paid or payable by such Indemnified Person as a result of such losses,
claims, damages or liabilities. The remedies provided for in this paragraph (b) are not exclusive and shall not limit any rights or remedies which may otherwise be available to any Indemnified Person at law or in equity. The indemnity and
contribution agreements contained in this paragraph shall remain operative and in full force and effect regardless of the termination of the Transaction. 

  

	 	(c)	 Regulation M. Counterparty is not on the Trade Date engaged in a distribution, as such term is
used in Regulation M under the Securities Exchange Act of 1934, as amended (the “Exchange Act”), of any securities of Counterparty, other than a distribution meeting the requirements of the exception set forth in Rules 101(b)(10)
and 102(b)(7) of Regulation M. Counterparty shall not, until the second Scheduled Trading Day immediately following the Trade Date, engage in any such distribution. 



 

	 	(d)	 No Manipulation. Counterparty is not entering into the Transaction to create actual or apparent
trading activity in the Shares (or any security convertible into or exchangeable for the Shares) or to raise or depress or otherwise manipulate the price of the Shares (or any security convertible into or exchangeable for the Shares) or otherwise in
violation of the Exchange Act. 


  

	 	(e)	 Transfer or Assignment. 



 

	 	(i)	 Counterparty shall have the right to transfer or assign its rights and obligations hereunder with respect to
all, but not less than all, of the Options hereunder (such Options, the “Transfer Options”); provided that such transfer or assignment shall be subject to reasonable conditions that Dealer may impose, including but not
limited, to the following conditions: 


  

	 	(A)	 With respect to any Transfer Options, Counterparty shall not be released from its notice and indemnification
obligations pursuant to Section 9.(b) or any obligations under Section 9.(n) or 9.(s) of this Confirmation; 


  

	 	(B)	 Any Transfer Options shall only be transferred or assigned to a third party that is a United States person (as
defined in the Internal Revenue Code of 1986, as amended (the “Code”)); 


  

	 	(C)	 Such transfer or assignment shall be effected on terms, including any reasonable undertakings by such third
party (including, but not limited to, an undertaking with respect to compliance with applicable securities laws in a manner that, in the reasonable judgment of Dealer, will not expose Dealer to material risks under applicable securities laws) and
execution of any documentation and delivery of legal opinions with respect to securities laws and other matters by such third party and Counterparty, as are requested and reasonably satisfactory to Dealer; 



  
 19 














	 	(D)	 Dealer will not, as a result of such transfer and assignment, be required to pay the transferee on any payment
date an amount under Section 2(d)(i)(4) of the Agreement greater than an amount that Dealer would have been required to pay to Counterparty in the absence of such transfer and assignment; 



 

	 	(E)	 An Event of Default, Potential Event of Default or Termination Event will not occur as a result of such
transfer and assignment; 


  

	 	(F)	 Without limiting the generality of clause (B), Counterparty shall cause the transferee to make such Payee Tax
Representations and to provide such tax documentation as may be reasonably requested by Dealer to permit Dealer to determine that results described in clauses (D) and (E) will not occur upon or after such transfer and assignment; and



  

	 	(G)	 Counterparty shall be responsible for all reasonable costs and expenses, including reasonable counsel fees,
incurred by Dealer in connection with such transfer or assignment. 


  

	 	(ii)	 Dealer may transfer or assign all or any part of its rights or obligations under the Transaction
(A) without Counterparty’s consent, to any affiliate of Dealer (1) that has a long-term issuer rating that is equal to or better than Dealer’s credit rating at the time of such transfer or assignment, or (2) whose
obligations hereunder will be guaranteed, pursuant to the terms of a customary guarantee in a form used by Dealer generally for similar transactions, by Dealer or Dealer’s ultimate parent, as applicable, or (B) with Counterparty’s
consent (such consent not to be unreasonably withheld or delayed), to any other third party with a long-term issuer rating equal to or better than A- by Standard and Poor’s Rating Group, Inc. or its
successor (“S&P”), or A3 by Moody’s Investor Service, Inc. (“Moody’s”) or, if either S&P or Moody’s ceases to rate such debt, at least an equivalent rating or better by a
substitute rating agency mutually agreed by Counterparty and Dealer; provided that, in the case of any transfer or assignment described above, each Dealer and the transferee or assignee in any such transfer or assignment is a “dealer in
securities” within the meaning of Section 475(c)(1) of the Code or the transfer or assignment does not otherwise result in a deemed exchange by Counterparty within the meaning of Section 1001 of the Code. In addition, (A) the
transferee or assignee shall agree that following such transfer or assignment, Counterparty will not (x) receive from the transferee or assignee on any payment date or delivery date (after accounting for amounts paid by the transferee or
assignee under Section 2(d)(i)(4) of the Agreement as well as any withholding or deduction of Tax from the payment or delivery) an amount or a number of Shares, as applicable, lower than the amount or the number of Shares, as applicable, that
Dealer would have been required to pay or deliver to Counterparty in the absence of such transfer or assignment or (y) be required to pay such assignee or transferee on any payment date an amount under Section 2(d)(i)(4) of the Agreement
greater than an amount that Counterparty would have been required to pay to Dealer in the absence of such transfer or assignment and (B) the transferee or assignee shall make such Payee Tax Representations and shall provide such tax
documentation as may be reasonably requested by Counterparty to permit Counterparty to make any necessary determinations pursuant to clause (A) of this sentence. If at any time at which (A) the Section 16 Percentage exceeds 8.5%, (B)
the Option Equity Percentage exceeds 14.5%, or (C) the Share Amount exceeds the Applicable Share Limit (if any applies) (any such condition described in clauses (A), (B) or (C), an “Excess Ownership Position”), Dealer is unable
after using its commercially reasonable efforts to effect a transfer or assignment of Options to a third party on pricing terms reasonably acceptable to Dealer and within a time period reasonably acceptable to Dealer such that no Excess Ownership
Position 



  
 20 














	 	
exists, then Dealer may designate any Exchange Business Day as an Early Termination Date with respect to a portion of the Transaction (the “Terminated Portion”), such that
following such partial termination no Excess Ownership Position exists. In the event that Dealer so designates an Early Termination Date with respect to a portion of the Transaction, a payment shall be made pursuant to Section 6 of the
Agreement as if (1) an Early Termination Date had been designated in respect of a Transaction having terms identical to the Transaction and a Number of Options equal to the number of Options underlying the Terminated Portion,
(2) Counterparty were the sole Affected Party with respect to such partial termination and (3) the Terminated Portion were the sole Affected Transaction (and, for the avoidance of doubt, the provisions of Section 9.(l) shall apply to
any amount that is payable by Dealer to Counterparty pursuant to this sentence as if Counterparty was not the Affected Party). The “Section 16 Percentage” as of any day is the fraction, expressed as a percentage,
(A) the numerator of which is the number of Shares that Dealer and any of its affiliates or any other person subject to aggregation with Dealer for purposes of the “beneficial ownership” test under Section 13 of the Exchange Act,
or any “group” (within the meaning of Section 13 of the Exchange Act) of which Dealer is or may be deemed to be a part beneficially owns (within the meaning of Section 13 of the Exchange Act), without duplication, on such day
(or, to the extent that for any reason the equivalent calculation under Section 16 of the Exchange Act and the rules and regulations thereunder results in a higher number, such higher number) and (B) the denominator of which is the number
of Shares outstanding on such day. The “Option Equity Percentage” as of any day is the fraction, expressed as a percentage, (A) the numerator of which is the sum of (1) the product of the Number of Options and the Option
Entitlement and (2) the aggregate number of Shares underlying any other call option transaction sold by Dealer to Counterparty, and (B) the denominator of which is the number of Shares outstanding. The “Share Amount” as of
any day is the number of Shares that Dealer and any person whose ownership position would be aggregated with that of Dealer (Dealer or any such person, a “Dealer Person”) under any law, rule, regulation, regulatory order or
organizational documents or contracts of Counterparty that are, in each case, applicable to ownership of Shares (“Applicable Restrictions”), owns, beneficially owns, constructively owns, controls, holds the power to vote or
otherwise meets a relevant definition of ownership under any Applicable Restriction, as determined by Dealer in its reasonable discretion. The “Applicable Share Limit” means a number of Shares equal to (A) the minimum number of
Shares that could give rise to reporting or registration obligations or other requirements (including obtaining prior approval from any person or entity) of a Dealer Person, or could result in an adverse effect on a Dealer Person, under any
Applicable Restriction, as determined by Dealer in its reasonable discretion, minus (B) 1% of the number of Shares outstanding. 

  

	 	(iii)	 Notwithstanding any other provision in this Confirmation to the contrary requiring or allowing Dealer to
purchase, sell, receive or deliver any Shares or other securities, or make or receive any payment in cash, to or from Counterparty, Dealer may designate any of its affiliates to purchase, sell, receive or deliver such Shares or other securities, or
to make or receive such payment in cash, and otherwise to perform Dealer’s obligations in respect of the Transaction and any such designee may assume such obligations. Dealer shall be discharged of its obligations to Counterparty to the extent
of any such performance. 


  

	 	(f)	 Staggered Settlement. If upon advice of counsel with respect to applicable legal and regulatory
requirements, including any requirements relating to Dealer’s commercially reasonable hedging activities hereunder, Dealer reasonably determines that it would not be practicable or advisable to deliver, or to acquire Shares to deliver, any or
all of the Shares to be delivered by Dealer on any Settlement Date for the Transaction, Dealer may, by notice to Counterparty on or prior to any Settlement Date (a “Nominal Settlement Date”), elect to deliver the Shares on two or
more dates (each, a “Staggered Settlement Date”) as follows: 



  
 21 














	 	(i)	 in such notice, Dealer will specify to Counterparty the related Staggered Settlement Dates (the first of which
will be such Nominal Settlement Date and the last of which will be no later than the twentieth (20th) Exchange Business Day following such Nominal Settlement Date) and the number of Shares that it
will deliver on each Staggered Settlement Date; 


  

	 	(ii)	 the aggregate number of Shares that Dealer will deliver to Counterparty hereunder on all such Staggered
Settlement Dates will equal the number of Shares that Dealer would otherwise be required to deliver on such Nominal Settlement Date; and 


  

	 	(iii)	 if the Net Share Settlement terms or the Combination Settlement terms set forth above were to apply on the
Nominal Settlement Date, then the Net Share Settlement terms or the Combination Settlement terms, as the case may be, will apply on each Staggered Settlement Date, except that the Shares otherwise deliverable on such Nominal Settlement Date will be
allocated among such Staggered Settlement Dates as specified by Dealer in the notice referred to in clause (i) above. 


  

	 	(g)	 Role of Agent. Dealer and Counterparty each acknowledge and agree that (a) Agent is acting
solely in its capacity as agent, and not as principal with respect to the Transaction, (b) Agent shall have no responsibility, obligation or liability, by way of guarantee, endorsement or otherwise in any manner, in respect of the Transaction
(including arising from any failure by Dealer or Counterparty to pay or perform any obligation under the Transaction), and (c) the parties agree to proceed solely against the other party, and not Agent, to collect or recover in respect of any
obligation owed to it in connection with the Transaction. Counterparty acknowledges that Agent is an affiliate of Dealer. Dealer will be acting for its own account in respect of this Confirmation and the Transaction contemplated hereunder.



  

	 	(h)	 Dividends. If at any time during the period from and including the Trade Date, to, but excluding,
the Expiration Date, (i) an ex-dividend date for a regular quarterly cash dividend occurs with respect to the Shares (an “Ex-Dividend Date”), and
that dividend is less than or greater than the Regular Dividend on a per Share basis or (ii) if no Ex- Dividend Date for a regular quarterly cash dividend occurs with respect to the Shares in any
quarterly dividend period of Counterparty, then the Calculation Agent will adjust the Cap Price as it determines appropriate to account for the economic effect on the Transaction of such dividend or lack thereof. “Regular Dividend” shall
mean USD0.55 per Share per quarter. Upon any adjustment to the Initial Dividend Threshold (as defined in the Indenture) for the Convertible Notes pursuant to the Indenture, the Calculation Agent will make a corresponding adjustment to the Regular
Dividend for the Transaction. 


  

	 	(i)	 Additional Termination Events. 



 

	 	(i)	 Notwithstanding anything to the contrary in this Confirmation, upon any Early Conversion in respect of which a
Notice of Conversion that is effective as to Counterparty has been delivered by the relevant converting Holder: 


  

	 	(A)	 Counterparty shall, within one Scheduled Trading Day of the Conversion Date for such Early Conversion, provide
written notice (an “Early Conversion Notice”) to Dealer specifying the number of Convertible Notes surrendered for conversion on such Conversion Date (such Convertible Notes, the “Affected Convertible Notes”), and
the giving of such Early Conversion Notice shall constitute an Additional Termination Event as provided in this clause (i); 


  

	 	(B)	 upon receipt of any such Early Conversion Notice, Dealer shall designate an Exchange Business Day as an Early
Termination Date (which Exchange Business Day shall be no earlier than one Scheduled Trading Day following the Conversion Date for such Early Conversion) with respect to the portion of the Transaction corresponding to a number of Options (the
“Affected Number of  



  
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Options”) equal to the lesser of (x) the number of Affected Convertible Notes and (y) the Number of Options as of the Conversion Date for such Early Conversion;


  

	 	(C)	 any payment hereunder with respect to such termination shall be calculated pursuant to Section 6 of the
Agreement as if (x) an Early Termination Date had been designated in respect of a Transaction having terms identical to the Transaction and a Number of Options equal to the Affected Number of Options, (y) Counterparty were the sole
Affected Party with respect to such Additional Termination Event and (z) the terminated portion of the Transaction were the sole Affected Transaction; provided that the amount payable with respect to such termination shall not be greater
than (1) the Applicable Percentage, multiplied by (2) the Affected Number of Options, multiplied by (3) (x) the sum of (i) the amount of cash paid (if any) to the Holder (as such term is defined in the Indenture) of an
Affected Convertible Note upon conversion of such Affected Convertible Note and (ii) the number of Shares delivered (if any) to the Holder (as such term is defined in the Indenture) of an Affected Convertible Note upon conversion of such
Affected Convertible Note, multiplied by the fair market value of one Share as determined by the Calculation Agent, minus (y) USD 1,000; 


  

	 	(D)	 for the avoidance of doubt, in determining the amount payable in respect of such Affected Transaction pursuant
to Section 6 of the Agreement, the Calculation Agent shall assume that (x) the relevant Early Conversion and any conversions, adjustments, agreements, payments, deliveries or acquisitions by or on behalf of Counterparty leading thereto had
not occurred, (y) no adjustments to the Conversion Rate have occurred pursuant to any Excluded Provision and (z) the corresponding Convertible Notes remain outstanding; and 



 

	 	(E)	 the Transaction shall remain in full force and effect, except that, as of the Conversion Date for such Early
Conversion, the Number of Options shall be reduced by the Affected Number of Options. 


  

	 	(ii)	 Notwithstanding anything to the contrary in this Confirmation if an event of default with respect to
Counterparty occurs under the terms of the Convertible Notes as set forth in Section 6.01 of the Indenture and the Convertible Notes are accelerated as a result of such event of default in accordance with the terms of the Indenture, then such
acceleration shall constitute an Additional Termination Event applicable to the Transaction and, with respect to such Additional Termination Event, (A) Counterparty shall be deemed to be the sole Affected Party, (B) the Transaction shall
be the sole Affected Transaction and (C) Dealer shall be the party entitled to designate an Early Termination Date pursuant to Section 6(b) of the Agreement. 



 

	 	(iii)	 Notwithstanding anything to the contrary in this Confirmation, the occurrence of an Amendment Event shall
constitute an Additional Termination Event applicable to the Transaction and, with respect to such Additional Termination Event, (A) Counterparty shall be deemed to be the sole Affected Party, (B) the Transaction shall be the sole Affected
Transaction and (C) Dealer shall be the party entitled to designate an Early Termination Date pursuant to Section 6(b) of the Agreement. “Amendment Event” means that Counterparty amends, modifies, supplements, waives or
obtains a waiver in respect of any term of the Indenture or the Convertible Notes governing the principal amount, coupon, maturity, repurchase obligation of Counterparty, redemption right of Counterparty, any term relating to conversion of the
Convertible Notes (including changes to the conversion rate, conversion rate adjustment provisions, conversion settlement dates or conversion conditions), or any term that would require consent of the holders of not less than 100% of the principal
amount of the Convertible Notes to amend 



  
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(other than, in each case, any amendment or supplement (x) pursuant to Section 10.01(h) of the Indenture that, as determined by the Calculation Agent, conforms the Indenture to the
description of Convertible Notes in the Offering Memorandum or (y) pursuant to Section 14.07 of the Indenture), in each case, without the consent of Dealer. 


 

	 	(j)	 Amendments to Equity Definitions. 



 

	 	(i)	 Section 11.2(e)(vii) of the Equity Definitions is hereby amended by deleting the words “a diluting or
concentrative” and replacing them with the words “a material” and adding the phrase “or the Options” at the end of the sentence. 


  

	 	(ii)	 Section 12.6(a)(ii) of the Equity Definitions is hereby amended by (1) inserting “(1)”
immediately following the word “means” in the first line thereof and (2) inserting immediately prior to the semi-colon at the end of subsection (B) thereof the following words: “or (2) the occurrence of any of the
events specified in Section 5(a)(vii)(1) through (9) of the ISDA Master Agreement with respect to that Issuer”. 


  

	 	(iii)	 Section 12.9(b)(i) of the Equity Definitions is hereby amended by (1) replacing “either party
may elect” with “Dealer may elect” and (2) replacing “notice to the other party” with “notice to Counterparty” in the first sentence of such section. 



 

	 	(iv)	 Section 12.9(b)(vi) of the Equity Definitions is hereby amended by (1) adding the word “or”
immediately before subsection “(B)”, (2) deleting the comma at the end of subsection (A), (3) deleting subsection (C) in its entirety, (4) deleting the word “or” immediately preceding subsection (C) and (5)
replacing the words “either party” in the last sentence of such Section with “Dealer”. 


  

	 	(k)	 Setoff. In addition to and without limiting any rights of
set-off that a party hereto may have as a matter of law, pursuant to contract or otherwise, upon the occurrence of an Early Termination Date, Dealer (and only Dealer) shall have the right to set off any
obligation that it may have to Counterparty under this Confirmation, including without limitation any obligation to make any payment of cash or delivery of Shares to Counterparty, against any obligation Counterparty may have to Dealer under any
other agreement between Dealer and Counterparty relating to Shares (each such contract or agreement, a “Separate Agreement”), including without limitation any obligation to make a payment of cash or a delivery of Shares or any other
property or securities. For this purpose, Dealer shall be entitled to convert any obligation (or the relevant portion of such obligation) denominated in one currency into another currency at the rate of exchange at which it would be able to purchase
the relevant amount of such currency, and to convert any obligation to deliver any non-cash property into an obligation to deliver cash in an amount calculated by reference to the market value of such property
as of the Early Termination Date, as determined by the Calculation Agent; provided that in the case of a set-off of any obligation to release or deliver assets against any right to receive fungible
assets, such obligation and right shall be set off in kind and; provided further that in determining the value of any obligation to deliver Shares, the value at any time of such obligation shall be determined by reference to the market value
of the Shares at such time, as determined in good faith by the Calculation Agent. If an obligation is unascertained at the time of any such set-off, the Calculation Agent may in good faith estimate the amount
or value of such obligation, in which case set-off will be effected in respect of that estimate, and the relevant party shall account to the other party at the time such obligation or right is ascertained. For
the avoidance of doubt and notwithstanding anything to the contrary provided in this Section 9.(k), in the event of bankruptcy or liquidation of either Counterparty or Dealer neither party shall have the right to set off any obligation that it
may have to the other party under the Transaction against any obligation such other party may have to it, whether arising under the Agreement, this Confirmation or any other agreement between the parties hereto, by operation of law or otherwise.



  

	 	(l)	 Alternative Calculations and Payment on Early Termination and on Certain Extraordinary Events. If
(a) an Early Termination Date (whether as a result of an Event of Default or a 



  
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Termination Event) occurs or is designated with respect to the Transaction or (b) the Transaction is cancelled or terminated upon the occurrence of an Extraordinary Event (except as a result
of (i) a Nationalization, Insolvency or Merger Event in which the consideration to be paid to holders of Shares consists solely of cash, (ii) an Announcement Event, Merger Event or Tender Offer that is within Counterparty’s control,
or (iii) an Event of Default in which Counterparty is the Defaulting Party or a Termination Event in which Counterparty is the Affected Party other than an Event of Default of the type described in Section 5(a), (v), (vii) or
(viii) of the Agreement or a Termination Event of the type described in Section 5(b) of the Agreement, in each case that resulted from an event or events outside Counterparty’s control), and if Dealer would owe any amount to
Counterparty pursuant to Section 6(d)(ii) of the Agreement or any Cancellation Amount pursuant to Article 12 of the Equity Definitions (any such amount, a “Payment Obligation”), then Dealer shall satisfy the Payment Obligation
by the Share Termination Alternative (as defined below), unless (a) Counterparty gives irrevocable telephonic notice to Dealer, confirmed in writing within one Scheduled Trading Day, no later than 12:00 p.m. (New York City time) on the date of
the Announcement Event, Merger Date, Tender Offer Date, Announcement Date (in the case of a Nationalization, Insolvency or Delisting), Early Termination Date or date of cancellation, as applicable, of its election that the Share Termination
Alternative shall not apply, (b) Counterparty remakes the representation set forth in Section 8.(f) as of the date of such election and (c) Dealer agrees, in its commercially reasonable discretion, to such election, in which case the
provisions of Section 12.7 or Section 12.9 of the Equity Definitions, or the provisions of Section 6(d)(ii) of the Agreement, as the case may be, shall apply. 


 

			
		
	Share Termination Alternative:	 	If applicable, Dealer shall deliver to Counterparty the Share Termination Delivery Property on, or within a commercially reasonable period of time after, the date when the relevant Payment Obligation would otherwise be due pursuant
to Section 12.7 or 12.9 of the Equity Definitions or Section 6(d)(ii) and 6(e) of the Agreement, as applicable, in satisfaction of such Payment Obligation in the manner reasonably requested by Counterparty free of payment.
		
	Share Termination Delivery Property:	 	A number of Share Termination Delivery Units, as calculated by the Calculation Agent, equal to the Payment Obligation divided by the Share Termination Unit Price. The Calculation Agent shall adjust the Share Termination Delivery
Property by replacing any fractional portion of a security therein with an amount of cash equal to the value of such fractional security based on the values used to calculate the Share Termination Unit Price.
		
	Share Termination Unit Price:	 	The value of property contained in one Share Termination Delivery Unit, as determined by the Calculation Agent in its discretion by commercially reasonable means and notified by the Calculation Agent to Dealer at the time of
notification of the Payment Obligation. For the avoidance of doubt, the parties agree that in determining the Share Termination Delivery Unit Price the Calculation Agent may consider the purchase price paid in connection with the purchase of Share
Termination Delivery Property.
		
	Share Termination Delivery Unit:	 	One Share or, if the Shares have changed into cash or any other property or the right to receive cash or any


  
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		 	other property as the result of a Nationalization, Insolvency or Merger Event (any such cash or other property, the “Exchange Property”), a unit consisting of the type and amount of such Exchange Property received
by a holder of one Share (without consideration of any requirement to pay cash or other consideration in lieu of fractional amounts of any securities) in such Nationalization, Insolvency or Merger Event, as determined by the Calculation
Agent.
		
	Failure to Deliver:	 	Applicable
		
	Other applicable provisions:	 	If Share Termination Alternative is applicable, the provisions of Sections 9.8, 9.9 and 9.11 (as modified above) of the Equity Definitions and the provisions set forth opposite the caption “Representation and
Agreement” in Section 2 will be applicable, except that all references in such provisions to “Physically-settled” shall be read as references to “Share Termination Settled” and all references to “Shares” shall
be read as references to “Share Termination Delivery Units”. “Share Termination Settled” in relation to the Transaction means that Share Termination Alternative is applicable to the Transaction.

  

	 	(m)	 Waiver of Jury Trial. Each party waives, to the fullest extent permitted by applicable law, any
right it may have to a trial by jury in respect of any suit, action or proceeding relating to the Transaction. Each party (i) certifies that no representative, agent or attorney of either party has represented, expressly or otherwise, that such
other party would not, in the event of such a suit, action or proceeding, seek to enforce the foregoing waiver and (ii) acknowledges that it and the other party have been induced to enter into the Transaction, as applicable, by, among other
things, the mutual waivers and certifications provided herein. 


  

	 	(n)	 Registration. Counterparty hereby agrees that if, in the good faith reasonable judgment of
Dealer, the Shares (“Hedge Shares”) acquired by Dealer for the purpose of effecting a commercially reasonable hedge of its obligations pursuant to the Transaction cannot be sold in the public market by Dealer without registration
under the Securities Act, Counterparty shall, at its election, either (i) in order to allow Dealer to sell the Hedge Shares in a registered offering, make available to Dealer an effective registration statement under the Securities Act and
enter into an agreement, in form and substance satisfactory to Dealer, substantially in the form of an underwriting agreement for a registered secondary offering of a similar size in respect of a similar issuer; provided, however, that if
Dealer, in its sole reasonable discretion, is not satisfied with access to due diligence materials, the results of its due diligence investigation, or the procedures and documentation for the registered offering referred to above, then clause
(ii) or clause (iii) of this paragraph shall apply at the election of Counterparty, (ii) in order to allow Dealer to sell the Hedge Shares in a private placement, enter into a private placement agreement substantially similar to
private placement purchase agreements customary for private placements of equity securities of a similar size in respect of a similar issuer, in form and substance satisfactory to Dealer (in which case, the Calculation Agent shall make any
adjustments to the terms of the Transaction that are necessary, in its reasonable judgment, to compensate Dealer for any discount from the public market price of the Shares incurred on the sale of Hedge Shares in a private placement; provided
that no “comfort letter” or accountants’ consent shall be required to be delivered in connection with any such private placements), or (iii) purchase the Hedge Shares from Dealer at the then- current market price on such Exchange
Business Days, and in the amounts and at such time(s), requested by Dealer. 



  
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	 	(o)	 Tax Disclosure. Effective from the date of commencement of discussions concerning the
Transaction, Counterparty and each of its employees, representatives, or other agents may disclose to any and all persons, without limitation of any kind, the tax treatment and tax structure of the Transaction and all materials of any kind
(including opinions or other tax analyses) that are provided to Counterparty relating to such tax treatment and tax structure. 


  

	 	(p)	 Right to Extend. Dealer may postpone or add, in whole or in part, any Valid Day or Valid Days
during the Settlement Averaging Period or any other date of valuation, payment or delivery by Dealer, with respect to some or all of the Options hereunder, if Dealer reasonably determines, in its commercially reasonable (in the case of clause
(x) below) or reasonable (in the case of clause (y) below) discretion, that such action is reasonably necessary or appropriate (x) to preserve Dealer’s commercially reasonable hedging or hedge unwind activity hereunder in light
of existing liquidity conditions or (y) to enable Dealer to effect purchases of Shares in connection with its commercially reasonable hedging, hedge unwind or settlement activity hereunder in a manner that would, if Dealer were Counterparty or
an affiliated purchaser of Counterparty, be in compliance with applicable legal, regulatory or self-regulatory requirements, or with related policies and procedures applicable to Dealer. 



 

	 	(q)	 Status of Claims in Bankruptcy. Dealer acknowledges and agrees that this Confirmation is
not intended to convey to Dealer rights against Counterparty with respect to the Transaction that are senior to the claims of common stockholders of Counterparty in any United States bankruptcy proceedings of Counterparty; provided that
nothing herein shall limit or shall be deemed to limit Dealer’s right to pursue remedies in the event of a breach by Counterparty of its obligations and agreements with respect to the Transaction; provided, further that nothing
herein shall limit or shall be deemed to limit Dealer’s rights in respect of any transactions other than the Transaction. 


  

	 	(r)	 Securities Contract; Swap Agreement. The parties hereto intend for (i) the Transaction to be
a “securities contract” and a “swap agreement” as defined in the Bankruptcy Code, and the parties hereto to be entitled to the protections afforded by, among other Sections, Sections 362(b)(6), 362(b)(17), 546(e), 546(g), 555 and
560 of the Bankruptcy Code, (ii) a party’s right to liquidate the Transaction and to exercise any other remedies upon the occurrence of any Event of Default under the Agreement with respect to the other party to constitute a
“contractual right” as described in the Bankruptcy Code, and (iii) each payment and delivery of cash, securities or other property hereunder to constitute a “margin payment” or “settlement payment” and a
“transfer” as defined in the Bankruptcy Code. 


  

	 	(s)	 Notice of Certain Other Events. Counterparty covenants and agrees that: 



 

	 	(i)	 promptly following the public announcement of the results of any election by the holders of Shares with respect
to the consideration due upon consummation of any Merger Event, Counterparty shall give Dealer written notice of the weighted average of the types and amounts of consideration received by holders of Shares upon consummation of such Merger Event (the
date of such notification, the “Consideration Notification Date”); provided that in no event shall the Consideration Notification Date be later than the date on which such Merger Event is consummated; and



  

	 	(ii)	 (A) Counterparty shall give Dealer commercially reasonable advance (but in no event less than one Exchange
Business Day) written notice of the section or sections of the Indenture and, if applicable, the formula therein, pursuant to which any adjustment will be made to the Convertible Notes in connection with any Potential Adjustment Event, Merger Event
or Tender Offer and (B) promptly following any such adjustment, Counterparty shall give Dealer written notice of the details of such adjustment. 



  
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	 	(t)	 Wall Street Transparency and Accountability Act. In connection with Section 739 of the Wall
Street Transparency and Accountability Act of 2010 (“WSTAA”), the parties hereby agree that neither the enactment of WSTAA or any regulation under the WSTAA, nor any requirement under WSTAA or an amendment made by WSTAA, shall limit
or otherwise impair either party’s otherwise applicable rights to terminate, renegotiate, modify, amend or supplement this Confirmation or the Agreement, as applicable, arising from a termination event, force majeure, illegality, increased
costs, regulatory change or similar event under this Confirmation, the Equity Definitions incorporated herein, or the Agreement (including, but not limited to, rights arising from Change in Law, Hedging Disruption, Increased Cost of Hedging, an
Excess Ownership Position, or Illegality (as defined in the Agreement)). 


  

	 	(u)	 Agreements and Acknowledgements Regarding Hedging. Counterparty understands, acknowledges and
agrees that: (A) at any time on and prior to the Expiration Date, Dealer and its affiliates may buy or sell Shares or other securities or buy or sell options or futures contracts or enter into swaps or other derivative securities in order to
adjust its hedge position with respect to the Transaction; (B) Dealer and its affiliates also may be active in the market for Shares other than in connection with hedging activities in relation to the Transaction; (C) Dealer shall make its
own determination as to whether, when or in what manner any hedging or market activities in securities of Issuer shall be conducted and shall do so in a manner that it deems appropriate to hedge its price and market risk with respect to the Relevant
Prices; and (D) any market activities of Dealer and its affiliates with respect to Shares may affect the market price and volatility of Shares, as well as the Relevant Prices, each in a manner that may be adverse to Counterparty.



  

	 	(v)	 Early Unwind. In the event the sale of the “Underwritten Securities” (as defined
in the Purchase Agreement) is not consummated with the Initial Purchasers for any reason, or Counterparty fails to deliver to Dealer opinions of counsel as required pursuant to Section 9.(a), in each case by 5:00 p.m. (New York City time) on
the Premium Payment Date, or such later date as agreed upon by the parties (the Premium Payment Date or such later date the “Early Unwind Date”), the Transaction shall automatically terminate (the “Early
Unwind”), on the Early Unwind Date and (i) the Transaction and all of the respective rights and obligations of Dealer and Counterparty under the Transaction shall be cancelled and terminated and (ii) each party shall be
released and discharged by the other party from and agrees not to make any claim against the other party with respect to any obligations or liabilities of the other party arising out of and to be performed in connection with the Transaction either
prior to or after the Early Unwind Date. Each of Dealer and Counterparty represents and acknowledges to the other that upon an Early Unwind, all obligations with respect to the Transaction shall be deemed fully and finally discharged.



  

	 	(w)	 Payment by Counterparty. In the event that, following payment of the Premium, (i) an Early
Termination Date occurs or is designated with respect to the Transaction as a result of a Termination Event or an Event of Default (other than an Event of Default arising under Section 5(a)(ii) or 5(a)(iv) of the Agreement) and, as a result,
Counterparty owes to Dealer an amount calculated under Section 6(e) of the Agreement, or (ii) Counterparty owes to Dealer, pursuant to Section 12.7 or Section 12.9 of the Equity Definitions, an amount calculated under
Section 12.8 of the Equity Definitions, such amount shall be deemed to be zero. 
	 

  

	 	(x)	 Other Adjustments Pursuant to the Equity Definitions. Notwithstanding anything to the contrary in
this Confirmation, solely for the purpose of adjusting the Cap Price, the terms “Potential Adjustment Event,” “Merger Event,” and “Tender Offer” shall each have the meanings assigned to such term in the Equity
Definitions (as amended by Section 9(j)(i)), and upon the occurrence of a Merger Date, the occurrence of a Tender Offer Date, or declaration by Counterparty of the terms of any Potential Adjustment Event, respectively, as such terms are defined
in the Equity Definitions, the Calculation Agent may, in its sole discretion, adjust the Cap Price to preserve the fair value of the Options to Dealer; provided that in no event shall the Cap Price be less than the Strike Price; provided
further that any adjustment to the Cap Price made pursuant to this Section 9(x) shall be made without duplication of any other adjustment hereunder (including, for the avoidance of doubt, adjustments made pursuant to the provisions opposite
the captions “Method of Adjustment,” “Consequences of Merger Events / Tender Offers” and “Consequence of Announcement Events” in Section 3 above or adjustments made pursuant to Section 9(h)).




  
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	 	(y)	 Adjustments. For the avoidance of doubt, whenever the Calculation Agent or the Determining Party
is called upon to make an adjustment or determine an amount pursuant to the terms of this Confirmation or the Equity Definitions to take into account the effect of an event (other than an adjustment or determination made by reference to the
Indenture), the Calculation Agent or the Determining Party, as the case may be, shall make such adjustment or determine such amount, as the case may be, by reference to the effect of such event on the Hedging Party, assuming that the Hedging Party
maintains a commercially reasonable hedge position. 


  

	 	(z)	 [Reserved] 



 

	 	(aa)	 [Reserved] 



 

	 	(bb)	 [Reserved] 



 

	 	(cc)	 Tax Matters. 



 

	 	(i)	 Payee Tax Representations. For the purpose of Section 3(f) of the Agreement, the
parties make the following representations: 


 (A)    Counterparty represents that it is (1) a
“U.S. person” (as that term is used in Section 1.1441-4(a)(3)(ii) of the U.S. Treasury Regulations) for U.S. federal income tax purposes and (2) an exempt recipient under Section 1.6049-4(c) of the U.S. Treasury Regulations. 
 (B)    Dealer represents
to Counterparty that it is a “foreign person” (as that term is used in Section 1.6041-4(a)(4) of the U.S. Treasury Regulations) for U.S. federal income tax purposes and each payment received by
it in connection with the Transaction will be effectively connected with its conduct of a trade or business in the United States of America. 
  

	 	(ii)	 Tax Forms. For the purpose of Section 4(a)(i) of the Agreement:



  

	 	(A)	 Counterparty shall provide Dealer with a valid U.S. Internal Revenue Service Form W-9, or any successor thereto, (i) on or before the date of execution of this Confirmation, (ii) promptly upon reasonable demand by Dealer and (iii) promptly upon learning that any such tax form
previously provided by Counterparty has become obsolete or incorrect. 


  

	 	(B)	 Dealer shall provide Counterparty with a valid U.S. Internal Revenue Service Form W-8ECI “Certificate of Foreign Person’s Claim That Income Is Effectively Connected With the Conduct of a Trade or Business in the United States, or any successor thereto, (i) on or before the date of
execution of this Confirmation, (ii) promptly upon reasonable demand by Counterparty and (iii) promptly upon learning that any such tax form previously provided by Dealer has become obsolete or incorrect. 



 

	 	(iii)	 Foreign Account Tax Compliance Act. “Indemnifiable Tax”, as defined in
Section 14 of the Agreement, shall not include any U.S. federal withholding tax imposed or collected pursuant to Sections 1471 through 1474 of the Code, any current or future regulations or official interpretations thereof, any agreement
entered into pursuant to Section 1471(b) of the Code, or any fiscal or regulatory legislation, rules or practices adopted pursuant to any intergovernmental agreement entered into in connection with the implementation of such Sections of the
Code (a “FATCA Withholding Tax”). For the avoidance of doubt, a FATCA Withholding Tax is a Tax the deduction or withholding of which is required by applicable law for the purposes of Section 2(d) of the Agreement.




  
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	 	(iv)	 Section 871(m) Protocol. The parties agree that the definitions
and provisions contained in the 2015 Section 871(m) Protocol, as published by ISDA, are incorporated into and shall apply to this Confirmation and the Agreement as if set forth in full herein. 



  
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 Please confirm that the foregoing correctly sets forth the terms of our agreement by
executing this Confirmation and returning it to Dealer. 
 Very truly yours, 

 

			
	BANK OF MONTREAL
		
	By:	 	 /s/ Roman Law

	Name: Roman Law
	Title:   Authorized Signatory
	
	 BMO CAPITAL MARKETS CORP. 

AS AGENT FOR BANK OF MONTREAL

		
	By:	 	 /s/ Nick Stamou

	Name: Nick Stamou
	Title:   Director, Derivatives Operations
		
	By:	 	 /s/ Brian Riley

	Name: Brian Riley
	Title:   Managing Director, Global Markets


 Accepted and confirmed 
 as
of the Trade Date: 
  

			
	Pioneer Natural Resources Company
		
	By:	 	 /s/ Richard P. Dealy

	Authorized Signatory
	Name:    Richard P. Dealy


  
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