Document:

Replacement Capital Covenant dated as of February 12, 2007.

 Exhibit 4.14 
 REPLACEMENT CAPITAL COVENANT, dated as of February 12, 2007 (this “Replacement Capital Covenant”), by Ambac Financial Group, Inc., a Delaware corporation (together with its successors and
assigns, the “Corporation”), in favor of and for the benefit of each Covered Debtholder (as defined below). 
 RECITALS

 (A) On the date hereof, the Corporation is issuing $400,000,000 aggregate principal amount of its Directly-Issued Subordinated Capital
Securities (including any such directly issued subordinated capital securities issued after the date hereof that may be consolidated and form a single series with such Directly Issued Subordinated Capital Securities issued on the date hereof, the
“DISCS”). 
 (B) This Replacement Capital Covenant is the “Replacement Capital Covenant” referred to in the
Prospectus Supplement, dated February 7, 2007, relating to the DISCS (together with the Prospectus, dated February 6, 2007 attached thereto, the “Prospectus”). 
 (C) The Corporation is entering into and disclosing the content of this Replacement Capital Covenant in the manner provided below with the intent that
the covenants provided for in this Replacement Capital Covenant be enforceable by each Covered Debtholder and that the Corporation be estopped from disregarding the covenants in this Replacement Capital Covenant, in each case to the fullest extent
permitted by applicable law. 
 (D) The Corporation acknowledges that reliance by each Covered Debtholder upon the covenants in this
Replacement Capital Covenant is reasonable and foreseeable by the Corporation and that, were the Corporation to disregard its covenants in this Replacement Capital Covenant, each Covered Debtholder would have sustained an injury as a result of its
reliance on such covenants. 
 NOW, THEREFORE, the Corporation hereby covenants and agrees as follows in favor of and for the benefit of each
Covered Debtholder. 
 Section 1. Definitions. Capitalized terms used in this Replacement Capital Covenant (including the
Recitals) have the respective meanings set forth in Schedule I hereto. 
 Section 2. Limitations on Repayment, Redemption and
Purchase of DISCS. The Corporation hereby promises and covenants to and for the benefit of each Covered Debtholder that the Corporation shall not repay, redeem or purchase (for the avoidance of doubt, any reference in this Replacement Capital
Covenant to any repayment of the Corporation’s securities will be deemed to include a reference to defeasance of the Corporation’s obligations under the securities), and will cause its Subsidiaries not to, repay, redeem or purchase, as
applicable, all or any part of the DISCS on or before February 7, 2067 except to the extent that the principal amount repaid or the applicable redemption, repayment or purchase price does not exceed the sum of the following amounts raised
through the issuance of Replacement Capital Securities: 

 (a) the Applicable Percentage of (i) the aggregate amount of net cash proceeds received by the
Corporation and its Subsidiaries from the sale of Common Stock and Qualifying Warrants (each as defined below) to Persons other than the Corporation and its Subsidiaries and (ii) the Market Value of any Common Stock that the Corporation and its
Subsidiaries have issued to persons other than the Corporation and its Subsidiaries in connection with the conversion of any convertible or exchangeable securities, other than securities for which the Corporation or any of its Subsidiaries has
received equity credit from any NRSRO (as defined below), in each case since the most recent Measurement Date (without double counting proceeds received in any prior Measurement Period); plus 
 (b) the aggregate amount of net cash proceeds received by the Corporation and its Subsidiaries since the most recent Measurement Date (without double
counting proceeds received in any prior Measurement Period) from the sale of Mandatorily Convertible Preferred Stock, Debt Exchangeable for Common Equity, Debt Exchangeable for Preferred Equity and Qualifying Capital Securities to Persons other than
the Corporation and its Subsidiaries. 
 Section 3. Covered Debt. (a) The Corporation represents and warrants that the Initial
Covered Debt is Eligible Debt. 
 (b) On or during the 30-day period immediately preceding any Redesignation Date with respect to the Covered
Debt then in effect, the Corporation shall identify the series of Eligible Debt that will become the Covered Debt on and after such Redesignation Date in accordance with the following procedures: 
 (i) the Corporation shall identify each series of its then outstanding long-term indebtedness for money borrowed that is Eligible Debt;

 (ii) if only one series of the Corporation’s then outstanding long-term indebtedness for money borrowed is Eligible
Debt, such series shall become the Covered Debt commencing on the related Redesignation Date; 
 (iii) if the Corporation has
more than one outstanding series of long-term indebtedness for money borrowed that is Eligible Debt, then the Corporation shall identify the series that has the latest stated final maturity date as of the date the Corporation is applying the
procedures in this Section 3(b) and such series shall become the Covered Debt on the related Redesignation Date; 
 (iv)
the series of outstanding long-term indebtedness for money borrowed that is determined to be Covered Debt pursuant to this Section 3(b) shall be the Covered Debt for purposes of this Replacement Capital Covenant for the period commencing on the
related Redesignation Date and continuing to but not including the Redesignation Date as of which a new series of outstanding long-term indebtedness is next determined to be the Covered Debt pursuant to the procedures set forth in this
Section 3(b); and 
 (v) in connection with such identification of a new series of Covered Debt, the Corporation shall,
as provided for in Section 3(c), give a notice and file 

  

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with the Commission a current report on Form 8-K under the Exchange Act including or incorporating by reference this Replacement Capital Covenant as an
exhibit within the time frame provided for in such section. 
 (c) Notice. In order to give effect to the intent of the Corporation
described in Recital C, the Corporation covenants that (i) simultaneously with the execution of this Replacement Capital Covenant or as soon as practicable after the date hereof, it shall (A) give notice to the Holders of the Initial
Covered Debt, in the manner provided in the indenture relating to the Initial Covered Debt, of this Replacement Capital Covenant and the rights granted to such Holders hereunder and (B) file a copy of this Replacement Capital Covenant with the
Commission as an exhibit to a current report on Form 8-K under the Exchange Act; (ii) so long as the Corporation is a reporting company under the Exchange Act, the Corporation will include in each annual report filed with the Commission on Form
10-K under the Exchange Act a description of the covenant set forth in Section 2 and identify the series of long-term indebtedness for borrowed money that is Covered Debt as of the date such annual report on Form 10-K is filed with the
Commission; (iii) if a series of the Corporation’s long-term indebtedness for money borrowed (A) becomes Covered Debt or (B) ceases to be Covered Debt pursuant to the procedures set forth in Section 3(b), the Corporation
shall give notice of such occurrence within 30 days to the holders of such long-term indebtedness for money borrowed in the manner provided for in the indenture, fiscal agency agreement or other instrument under which such long-term indebtedness for
money borrowed was issued and report such change in a current report on Form 8-K under the Exchange Act including or incorporating by reference this Replacement Capital Covenant, and in the Corporation’s next quarterly report on Form 10-Q or
annual report on Form 10-K, as applicable; (iv) if, and only if, the Corporation ceases to be a reporting company under the Exchange Act, the Corporation shall post on its website the information otherwise required to be included in Exchange
Act filings pursuant to clauses (ii) and (iii) of this Section 3(c); and (v) promptly upon request by any Holder of Covered Debt, the Corporation shall provide such Holder with a conformed copy of this Replacement Capital
Covenant. 
 Section 4. Termination, Amendment and Waiver. (a) The obligations of the Corporation pursuant to this Replacement
Capital Covenant shall remain in full force and effect until the earliest (the “Termination Date”) to occur of (i) February 7, 2067, or, if earlier, the date on which the DISCS are otherwise repaid, redeemed or purchased
in full, (ii) the date, if any, on which the Holders of a majority in principal amount of the then-effective series of Covered Debt consent or agree in writing to the termination of this Replacement Capital Covenant and the obligations of the
Corporation hereunder, (iii) the date on which the Corporation ceases to have any series of outstanding Eligible Senior Debt or Eligible Subordinated Debt (in each case, without giving effect to the rating requirement in clause (b) of the
definition of each such term) and (iv) the date on which an event of default under the Junior Subordinated Indenture resulting in an acceleration of the DISCS occurs. From and after the Termination Date, the obligations of the Corporation
pursuant to this Replacement Capital Covenant shall be of no further force and effect. 
 (b) This Replacement Capital Covenant may be
amended or supplemented from time to time by a written instrument signed by the Corporation with the consent of the Holders of at least a majority in principal amount of the then-effective series of Covered Debt, provided  

  

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that this Replacement Capital Covenant may be amended or supplemented from time to time by a written instrument signed only by the Corporation (and without
the consent of any Holder of the then-effective series of Covered Debt) if (i) the effect of such amendment or supplement is solely to impose additional restrictions on the types of securities qualifying as Replacement Capital Securities, and
an officer of the Corporation has delivered to the Holders of the then-effective series of Covered Debt in the manner provided for in the indenture, fiscal agency agreement or other instrument with respect to such Covered Debt a written certificate
to that effect, (ii) such amendment or supplement is not adverse to the Covered Debtholders and an officer of the Corporation has delivered to the Holders of the then-effective series of Covered Debt in the manner provided for in the indenture,
fiscal agency agreement or other instrument with respect to such Covered Debt a written certificate stating that, in his or her determination, such amendment or supplement is not adverse to such Covered Debtholders, or (iii) such amendment or
supplement eliminates Common Stock, Debt Exchangeable for Common Equity and/or Mandatorily Convertible Preferred Stock as Replacement Capital Securities if, in the case of this clause (iii), the Corporation has been advised in writing by a
nationally recognized independent accounting firm that there is more than an insubstantial risk that the failure to do so would result in a reduction in the Corporation’s earnings per share as calculated for financial reporting purposes.

 (c) For purposes of Sections 4(a) and 4(b), the Holders whose consent or agreement is required to terminate, amend or supplement the
obligations of the Corporation under this Replacement Capital Covenant shall be the Holders of the then-effective Covered Debt as of a record date established by the Corporation that is not more than 30 days prior to the date on which the
Corporation proposes that such termination, amendment or supplement becomes effective. 
 Section 5. Miscellaneous. (a) This
Replacement Capital Covenant shall be governed by and construed in accordance with the laws of the State of New York. 
 (b) This
Replacement Capital Covenant shall be binding upon the Corporation and its successors and assigns and shall inure to the benefit of the Covered Debtholders as they exist from time to time (it being understood and agreed by the Corporation that any
Person who is a Covered Debtholder at the time such Person acquires, holds or sells Covered Debt shall retain its status as a Covered Debtholder for so long as the series of long-term indebtedness for borrowed money owned by such Person is Covered
Debt and, if such Person initiates a claim or proceeding to enforce its rights under this Replacement Capital Covenant after the Corporation has violated its covenants in Section 2 and before the series of long-term indebtedness for money
borrowed held by such Person is no longer Covered Debt, such Person’s rights under this Replacement Capital Covenant shall not terminate prior to a Termination Date solely by reason of such series of long-term indebtedness for money borrowed no
longer being Covered Debt). 
 (c) All demands, notices, requests and other communications to the Corporation under this Replacement Capital
Covenant shall be deemed to have been duly given and made if in writing and (i) if served by personal delivery upon the Corporation, on the day so delivered (or, if such day is not a Business Day, the next succeeding Business Day), (ii) if
delivered by registered post or certified mail, return receipt requested, or sent to the 

  

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Corporation by a national or international courier service, on the date of receipt by the Corporation (or, if such date of receipt is not a Business Day, the
next succeeding Business Day), or (iii) if sent by telecopier, on the day telecopied, or if not a Business Day, the next succeeding Business Day, provided that the telecopy is promptly confirmed by telephone confirmation thereof, and in each
case to the Corporation at the address set forth below, or at such other address as the Corporation may thereafter notify to Covered Debtholders or post on its website as the address for notices under this Replacement Capital Covenant: 

Ambac Financial Group. 
 One State Street
Plaza 
 New York, NY 10004 
 (d)
If the Corporation is obligated to sell Replacement Capital Securities and apply the net proceeds to payments of principal of or interest on any outstanding securities in addition to the DISCS, then on any date and for any period the amount of net
proceeds received by the Corporation from those sales and available for such payments shall be applied to the DISCS and those other securities having the same scheduled repayment date or scheduled redemption date as the DISCS pro rata in accordance
with their respective outstanding principal amounts and none of such net proceeds shall be applied to any other securities having a later scheduled repayment date or scheduled redemption date until the principal of and all accrued and unpaid
interest on the DISCS has been paid in full. 
  

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 IN WITNESS WHEREOF, the Corporation has caused this Replacement Capital Covenant to be executed by its
duly authorized officer, as of the day and year first above written. 
  

			
	AMBAC FINANCIAL GROUP
		
	By:	  	/s/ David Trick
	Name:	  	David Trick
	Title:	  	Managing Director and Treasurer

 [Signature page to the Replacement Capital Covenant] 
  

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 Schedule I 
 DEFINITIONS 
 “Alternative Payment Mechanism” means, with respect to any securities
or combination of securities (together in this definition, “such securities”), provisions in the related transaction documents requiring the Corporation to issue (or use commercially reasonable efforts to issue) one or more types of APM
Qualifying Securities raising eligible proceeds at least equal to the deferred Distributions on such securities and apply the proceeds to pay unpaid Distributions on such securities, commencing on the earlier of (x) the first Distribution Date
after commencement of a deferral period on which the Corporation pays current Distributions on such securities and (y) the fifth anniversary of the commencement of such deferral period, and that: 
 (a) define “eligible proceeds” to mean, for purposes of such Alternative Payment Mechanism, the net proceeds (after
underwriters’ or placement agents’ fees, commissions or discounts and other expenses relating to the issuance or sale of the relevant securities, where applicable, and including the fair market value of property received by the Corporation
or any of its Subsidiaries as consideration for such securities) that the Corporation has received during the 180 days prior to the related Distribution Date from the issuance of APM Qualifying Securities, up to the Preferred Cap (as defined in
paragraph (f) below) in the case of APM Qualifying Securities that are Qualifying Non-Cumulative Perpetual Preferred Stock or Mandatorily Convertible Preferred Stock; 
 (b) permit the Corporation to pay current Distributions on any Distribution Date out of any source of funds but (x) require the
Corporation to pay deferred Distributions only out of eligible proceeds and (y) prohibit the Corporation from paying deferred Distributions out of any source of funds other than eligible proceeds; 
 (c) if deferral of Distributions continues for more than one year (or such shorter period as provided for in the terms of such
securities), require the Corporation not to repay, redeem or purchase any APM Qualifying Securities of the Corporation or any securities of the Corporation that on a bankruptcy or liquidation of the Corporation rank pari passu or junior to
such APM Qualifying Securities until at least one year after all deferred Distributions have been paid; 
 (d) may include a
provision that, notwithstanding the Common Cap (as defined in paragraph (f) below) and the Preferred Cap, for purposes of paying deferred Distributions, limits the ability of the Corporation to sell shares of Common Stock, Qualifying Warrants,
or Mandatorily Convertible Preferred Stock above an aggregate cap specified in the transaction documents (a “Share Cap”), subject to the Corporation’s agreement to use commercially reasonable efforts to increase the Share Cap
amount only to the extent that it can do so and (i) simultaneously satisfy its future fixed or contingent obligations under other securities and derivative instruments that provide for settlement or payment in shares of Common Stock or
(ii) if the Corporation cannot increase the Share Cap amount as contemplated in the preceding clause, by requesting its Board of Directors to adopt a resolution for shareholder vote at the next occurring annual shareholders meeting to increase
the number of shares of the Corporation’s authorized Common Stock for purposes of satisfying the Corporation’s obligations to pay deferred Distributions; 

 (e) permit the Corporation, at its option, to provide that if the Corporation is involved
in a merger, consolidation, amalgamation or conveyance, transfer or lease of assets substantially as an entirety to any other person (a “business combination”) where immediately after the consummation of the business combination more than
50% of the surviving entity’s voting stock of the surviving entity of the business combination, or the person to whom all or substantially all of the Corporation’s assets are conveyed, transferred or leased is owned by the shareholders of
the other party to the business combination, then clauses (a), (b) and (c) above will not apply to any deferral period that is terminated on the next interest payment date following the date of consummation of the business combination; and

 (f) limit the obligation of the Corporation to issue (or use commercially reasonable efforts to issue) APM Qualifying
Securities up to: 
 (i) in the case of APM Qualifying Securities that are Common Stock or Qualifying Warrants, an aggregate
amount of all Common Stock issued or issuable upon the exercise of such Qualifying Warrants pursuant to the Alternative Payment Mechanism with respect to deferred Distributions during the first five years of any deferral period equal to 2% of the
total number of issued and outstanding shares of the Common Stock of the Company as of the date of the Corporation’s most recently publicly available consolidated financial statements as of the date of such issuance (the “Common
Cap”), provided (and it being understood) that the Common Cap shall cease to apply to such deferral period by a date (as specified in the related transaction documents) which shall be not later than the fifth anniversary of the commencement
of such deferral period; and 
 (ii) in the case of APM Qualifying Securities that are Qualifying Non-Cumulative Perpetual
Preferred Stock or Mandatorily Convertible Preferred Stock, an amount from the issuance of such Qualifying Non-Cumulative Perpetual Preferred Stock and then still-outstanding Mandatorily Convertible Preferred Stock pursuant to the related
Alternative Payment Mechanism (including, in the case of Qualifying Non-Cumulative Perpetual Preferred Stock, at any point in time from all prior issuances thereof pursuant to such Alternative Payment Mechanism) equal to 25% of the initial principal
or stated amount of the securities that are the subject of the related Alternative Payment Mechanism (the “Preferred Cap”); 
 (iii) provided (and it being understood) that: 
 (A) the Corporation shall not be
obligated to issue (or use commercially reasonable efforts to issue) APM Qualifying Securities for so long as a Market Disruption Event has occurred and is continuing; 
  

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 (B) if, due to a Market Disruption Event or otherwise, the Corporation is able to raise
and apply some, but not all, of the eligible proceeds necessary to pay all deferred Distributions on any Distribution Date, the Corporation will apply any available eligible proceeds to pay accrued and unpaid Distributions on the applicable
Distribution Date in chronological order subject to the Common Cap, Preferred Cap and Share Cap (if any), as applicable; and 
 if the
Corporation has outstanding more than one class or series of securities under which it is obligated to sell a type of APM Qualifying Securities and apply some part of the proceeds to the payment of deferred Distributions, then on any date and for
any period the amount of net proceeds received by the Corporation from those sales and available for payment of deferred Distributions on such securities shall be applied to such securities on a pro rata basis in proportion to the total amounts that
are due on such securities. 
 “APM Qualifying Securities” means: 
 (a) Common Stock; 
 (b) Qualifying Warrants; 
 (c) Qualifying Non-Cumulative Perpetual Preferred Stock; or 
 (d) Mandatorily Convertible Preferred Stock. 
 “Applicable Percentage” means 1 divided by (i) 75% with respect to any repayment, redemption or purchase prior to February 7, 2037, (ii) 50% with respect to any repayment, redemption or
purchase on or after February 7, 2037 and prior to February 7, 2057 and (iii) 25% with respect to any repayment, redemption or purchase on or after February 7, 2057 (for example, prior to February 7, 2037, the Applicable
Percentage in the case of such securities will be 133.33%). 
 “Business Day” means each day other than (a) a Saturday
or Sunday or (b) a day on which banking institutions in The City of New York are authorized or required by law or executive order to remain closed, and, on or after the Scheduled Maturity Date, a day that is not a London business day. A
“London business day” is any day on which dealings in deposits in U.S. dollars are transacted in the London interbank market. 
 “Commission” means the United States Securities and Exchange Commission. 
 “Common Stock” means
common stock of the Corporation (including treasury shares of common stock), common stock issued pursuant to any dividend reinvestment plan and employee benefit plans of the Corporation, a security that tracks the performance of, or relates to the
results of, a business, unit or division of the Corporation, and any securities issued in exchange therefor in connection with a merger, consolidation, binding share exchange, business combination, recapitalization or other similar event.

  

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 “Corporation” has the meaning specified in the introduction to this instrument.

 “Covered Debt” means (a) at the date of this Replacement Capital Covenant and continuing to but not including the
first Redesignation Date, the Initial Covered Debt and (b) thereafter, commencing with each Redesignation Date and continuing to but not including the next succeeding Redesignation Date, the Eligible Debt identified pursuant to
Section 3(b) as the Covered Debt for such period. 
 “Covered Debtholder” means each Person (whether a Holder or a
beneficial owner holding through a participant in a clearing agency) that buys, holds or sells long-term indebtedness for money borrowed of the Corporation during the period that such long-term indebtedness for money borrowed is Covered Debt.

 “Debt Exchangeable for Common Equity” means a security or combination of securities (together in this definition,
“such securities”) that: 
 (a) gives the holder a beneficial interest in (i) debt securities of the
Corporation and (ii) a fractional interest in a stock purchase contract for a share of common stock of the Corporation that will be settled in three years or less, with the number of shares of common stock purchasable pursuant to such stock
purchase contract to be within a range established at the time of issuance of such debt securities; 
 (b) provides that the
investors directly or indirectly grant to the Corporation a security interest in such debt securities and their proceeds (including any substitute collateral permitted under the transaction documents) to secure the investors’ direct or indirect
obligation to purchase common stock of the Corporation pursuant to such stock purchase contracts; 
 (c) includes a
remarketing feature pursuant to which the debt securities of the Corporation are remarketed to new investors commencing not later than the first Distribution Date that is at least 1 month prior to the settlement date of the purchase contract;

 (d) provides for the proceeds raised in the remarketing to be used to purchase common stock of the Corporation under the
stock purchase contracts and, if there has not been a successful remarketing by the settlement date of the purchase contract, provides that the stock purchase contracts will be settled by the Corporation foreclosing on its debt securities or other
collateral directly or indirectly pledged by investors in the Debt Exchangeable for Common Equity. 
 “Debt Exchangeable for
Preferred Equity” means a security or combination of securities (together in this definition, “such securities”) that: 
 (a) gives the holder a beneficial interest in (i) subordinated debt securities of the Corporation that include a provision requiring the Corporation to issue (or use commercially reasonable efforts to issue) one
or more types of APM Qualifying Securities raising proceeds at least equal to the deferred Distributions on such subordinated debt securities commencing not later than the second anniversary of the commencement of such deferral period and that are
the most junior subordinated debt of the Corporation (or rank pari passu with the most 

  

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junior subordinated debt of the Corporation) (in this definition, “subordinated debt” of the Corporation) and (ii) a fractional interest in a
stock purchase contract for a share of non-cumulative perpetual preferred stock of the Corporation that ranks pari passu with or junior to all other preferred stock of the Corporation (in this definition, “preferred stock” of the
Corporation); 
 (b) provides that the investors directly or indirectly grant to the Corporation a security interest in such
subordinated debt securities and their proceeds (including any substitute collateral permitted under the transaction documents) to secure the investors’ direct or indirect obligation to purchase preferred stock of the Corporation pursuant to
such stock purchase contracts; 
 (c) includes a remarketing feature pursuant to which the subordinated debt of the
Corporation is remarketed to new investors commencing not later than the first Distribution Date that is at least five years after the date of issuance of securities or earlier in the event of an early settlement event based on: (i) the
dissolution of the issuer of such debt exchangeable for preferred equity or (ii) one or more financial tests set forth in the terms of the instrument governing such debt exchangeable for preferred equity; 
 (d) provides for the proceeds raised in the remarketing to be used to purchase preferred stock of the Corporation under the stock purchase
contracts and, if there has not been a successful remarketing by the first Distribution Date that is six years after the date of issuance of such securities, provides that the stock purchase contracts will be settled by the Corporation foreclosing
on its subordinated debt securities or other collateral directly or indirectly pledged by investors in the Debt Exchangeable for Preferred Equity; 
 (e) includes a replacement capital covenant substantially similar to this Replacement Capital Covenant or an Other Qualifying Capital Replacement Covenant that will apply to such securities and, if applicable, to the
preferred stock of the Corporation, and will not include Debt Exchangeable for Preferred Equity as a Replacement Capital Security; and 
 (f) if applicable, after the issuance of such preferred stock of the Corporation, provides the holders of such securities with a beneficial interest in such preferred stock of the Corporation. 
 “DISCS” has the meaning specified in Recital A. 
 “Distribution Date” means, as to any securities or combination of securities, the dates on which periodic Distributions on such securities are scheduled to be made. 
 “Distribution Period” means, as to any securities or combination of securities, each period from and including the later of the issue
date and a Distribution Date for such securities to but excluding the next succeeding Distribution Date for such securities. 
 “Distributions” means, as to a security or combination of securities, dividends, interest payments or other income distributions to the holders thereof that are not Subsidiaries of the Corporation. 
  

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 “Eligible Debt” means, at any time, Eligible Subordinated Debt or, if no Eligible
Subordinated Debt is then outstanding, Eligible Senior Debt. 
 “Eligible Senior Debt” means, at any time in respect of any
issuer, each series of outstanding unsecured long-term indebtedness for money borrowed of such issuer that (a) upon a bankruptcy, liquidation, dissolution or winding-up of the issuer, ranks most senior among the issuer’s then outstanding
classes of indebtedness for money borrowed, (b) is then assigned a rating by at least one NRSRO (provided that this clause (b) shall apply on a Redesignation Date only if on such date the issuer has outstanding senior long-term
indebtedness for money borrowed that satisfies the requirements of clauses (a), (c) and (d) that is then assigned a rating by at least one NRSRO), (c) has an outstanding principal amount of not less than $100,000,000, and (d) was
issued through or with the assistance of a commercial or investment banking firm or firms acting as underwriters, initial purchasers or placement or distribution agents. For purposes of this definition as applied to securities with a CUSIP number,
each issuance of long-term indebtedness for money borrowed that has (or, if such indebtedness is held by a trust or other intermediate entity established directly or indirectly by the issuer, the securities of such intermediate entity that have) a
separate CUSIP number shall be deemed to be a series of the issuer’s long-term indebtedness for money borrowed that is separate from each other series of such indebtedness. 
 “Eligible Subordinated Debt” means, at any time in respect of any issuer, each series of the issuer’s then outstanding unsecured
long-term indebtedness for money borrowed that (a) upon a bankruptcy, liquidation, dissolution or winding-up of the issuer, ranks subordinate to the issuer’s then outstanding series of indebtedness for money borrowed that ranks most
senior, (b) is then assigned a rating by at least one NRSRO (provided that this clause (b) shall apply on a Redesignation Date only if on such date the issuer has outstanding subordinated long-term indebtedness for money borrowed that
satisfies the requirements in clauses (a), (c) and (d) that is then assigned a rating by at least one NRSRO), (c) has an outstanding principal amount of not less than $100,000,000, and (d) was issued through or with the
assistance of a commercial or investment banking firm or firms acting as underwriters, initial purchasers or placement or distribution agents. For purposes of this definition as applied to securities with a CUSIP number, each issuance of long-term
indebtedness for money borrowed that has (or, if such indebtedness is held by a trust or other intermediate entity established directly or indirectly by the issuer, the securities of such intermediate entity that have) a separate CUSIP number shall
be deemed to be a series of the issuer’s long-term indebtedness for money borrowed that is separate from each other series of such indebtedness. 
 “Exchange Act” means the Securities Exchange Act of 1934, as amended. 
 “Holder” means, as to the Covered Debt then in effect, each holder of such Covered Debt as reflected on the securities register maintained by or on behalf of the Corporation with respect to such Covered Debt. 
 “Initial Covered Debt” means the Corporation’s 5.95% Debentures due 2035 (CUSIP: 023139AE8). 
  

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 “Intent-Based Replacement Disclosure” means, as to any security or combination of
securities (together in this definition, “securities”), that the Corporation has publicly stated its intention, either in the prospectus or other offering document under which such securities were initially offered for sale or in filings
with the Commission made by the Corporation under the Exchange Act prior to or contemporaneously with the issuance of such securities, that the Corporation, to the extent the securities provide the Corporation with equity credit, will repay, redeem
or purchase such securities only with the proceeds of replacement capital securities that have terms and provisions at the time of repayment, redemption or purchase that are as or more equity-like than the securities then being repaid, redeemed or
purchased, raised within 180 days prior to the applicable repayments, redemption or purchase date. 
 “Junior Subordinated
Indenture” means the indenture, dated February 12, 2007, between the Corporation and The Bank of New York, as junior subordinated indenture trustee, as supplemented by the Supplemental Indenture. 
 “Mandatorily Convertible Preferred Stock” means preferred stock with (a) no prepayment obligation on the part of the issuer
thereof, whether at the election of the holders or otherwise, and (b) a requirement that such preferred stock convert into common stock within three years from the date of its issuance at a conversion ratio within a range established at the
time of issuance of such preferred stock. 
 “Mandatory Trigger Provision” means, as to any security or combination of
securities (together in this definition, “securities”), provisions in the terms thereof or of the related transaction agreements that (a) require or, at its option in the case of non-cumulative perpetual preferred stock, permit the
issuer of such securities to make payment of Distributions on such securities only pursuant to the issue and sale of APM Qualifying Securities, within no more than two years of a failure to satisfy one or more financial tests set forth in the terms
of such securities or related transaction agreements, in an amount such that the net proceeds of such sale are at least equal to the amount of unpaid Distributions on such securities (including without limitation all deferred and accumulated
amounts) and in either case require the application of the net proceeds of such sale to pay such unpaid Distributions, provided that: (1) if the APM Qualifying Securities issued and sold are Qualifying Non-Cumulative Perpetual Preferred Stock
or Mandatorily Convertible Preferred Stock, the amount of the net proceeds of Qualifying Non-Cumulative Perpetual Preferred Stock and Mandatorily Convertible Preferred Stock applied, together with the net proceeds of all prior issuances of
Qualifying Non-Cumulative Preferred Stock and any still-outstanding Mandatorily Convertible Preferred Stock applied during the current and all prior deferral periods, to pay such Distributions pursuant to such provision may not exceed 25% of the
initial liquidation or principal amount of such securities and (2) if the APM Qualifying Securities issued and sold are Common Stock or Qualifying Warrants and if the Mandatory Trigger provision does not requires such issuance and sale within
one year of such failure, the number of shares of Common Stock or Qualifying Warrants issued or issuable upon the exercise of such Qualifying Warrants plus the number of shares of Common Stock previously issued or issuable upon the exercise of
previously issued Qualifying Warrants may not exceed 2% of the total number of issued and outstanding shares of the Corporation’s Common Stock as of the date of the Corporation’s most recent publicly available consolidated financial
statements as of the date of such issuance, (b) prohibit the issuer from purchasing any APM Qualifying Securities or any of the Corporation’s securities that on the Corporation’s bankruptcy or 

  

 7 

 
liquidation rank pari passu or junior to such APM qualifying securities prior to the date that is six months after the issuer applies the net proceeds of the
sales described in clause (a) to pay such unpaid Distributions, and (c) upon any liquidation, dissolution, winding up, reorganization or in connection with any insolvency, receivership or proceeding under any bankruptcy law with respect to
the Corporation, limit the claim of the holders of such securities (other than non-cumulative perpetual preferred stock) to Distributions that accumulate during a period in which the Corporation fails to satisfy one or more financial tests set forth
in the terms of such securities or related transaction agreements to (x) 25% of the principal amount of such securities then outstanding in the case of securities not permitting the issuance and sale pursuant to the provisions described in
clause (a) above of securities other than Common Stock or Qualifying Warrants or (y) two years of accumulated and unpaid Distributions (including compounded amounts thereon) in all other cases. No remedy other than Permitted Remedies may
arise by the terms of such securities or related transaction agreements in favor of the holders of such securities as a result of the issuer’s failure to pay Distributions because of the Mandatory Trigger Provision or as a result of the
issuer’s exercise of its right under an Optional Deferral Provision until Distributions have been deferred for one or more Distribution Periods that total together at least ten years. 
 “Market Disruption Events” means one or more events or circumstances substantially similar to those listed as “Market Disruption
Events” in the Supplemental Indenture. 
 “Market Value” means, on any date, the closing sale price per share of Common
Stock (or if no closing sale price is reported, the average of the bid and ask prices or, if more than one in either case, the average of the average bid and the average ask prices) on that date as reported in composite transactions by the New York
Stock Exchange or, if the Common Stock is not then listed on the New York Stock Exchange, as reported by the principal U.S. securities exchange on which the Common Stock is traded or quoted; if the Common Stock is not either listed or quoted on any
U.S. securities exchange on the relevant date, the market price will be the average of the mid-point of the bid and ask prices for the Common Stock on the relevant date submitted by at least three nationally recognized independent investment banking
firms selected by the Corporation for this purpose. 
 “Measurement Date” means (a) with respect to any repayment,
redemption or purchase of DISCS on or prior to the Scheduled Maturity Date, the date that is 180 days; and (b) with respect to any repayment, redemption or purchase of DISCS after the Scheduled Maturity Date, the date that is 30 days,
in each case prior to delivery of notice of such repayment or redemption or prior to the date of such repayment, redemption or purchase. 
 “Measurement Period” means the period from a Measurement Date to the related notice date or purchase date. Measurement Periods cannot run concurrently. 
 “No Payment Provision” means a provision or provisions in the transaction documents for securities (referred to in this definition as
“such securities”) that include the following: 
 (a) an Alternative Payment Mechanism; and 
  

 8 

 (b) an Optional Deferral Provision modified and supplemented from the general definition
of that term to provide that: 
 (i) the issuer of such securities may, in its sole discretion, defer in whole or in part
payment of Distributions on such securities for one or more consecutive Distribution Periods of up to five years or, if a Market Disruption Event has occurred and is continuing, ten years, without any remedy other than Permitted Remedies and the
obligations (and limitations on obligations) described in the definition of “Alternative Payment Mechanism” applying; and 
 (ii) if the Corporation becomes subject to a bankruptcy, insolvency, receivership or similar proceeding prior to the redemption or repayment of such securities, the holders of such securities will have no claim to any deferred and unpaid
Distributions exceeding two years of Distributions on such securities; provided, however, that holders of such securities may have an additional preferred equity claim in respect of deferred and unpaid Distributions which are in excess of two years
of Distributions that is senior to the Corporation’s Common Stock and is or would be pari passu with any Qualifying Non-Cumulative Preferred Stock up to the amount equal to their pro rata shares of any unused portion of the Preferred Cap
(as defined in the definition of “Alternative Payment Mechanism”). 
 “Non-Cumulative” means, with respect to any
securities, that the issuer may elect not to make any number of periodic Distributions without any remedy arising under the terms of the securities or related agreements in favor of the holders, other than one or more Permitted Remedies. 

“NRSRO” means a nationally recognized statistical rating organization within the meaning of Rule 15c3-1(c)(2)(vi)(F) under the
Exchange Act. 
 “Optional Deferral Provision” means, as to any securities, provisions in the terms thereof or of the
related transaction agreements to the effect of either (a) or (b) below: 
 (a) (i) the issuer of such
securities may, in its sole discretion, defer in whole or in part payment of Distributions on such securities for one or more consecutive Distribution Periods of up to five years or, if a Market Disruption Event is continuing, ten years, without any
remedy other than Permitted Remedies and (ii) an Alternative Payment Mechanism (provided that such Alternative Payment Mechanism need not apply during the first five years of any deferral period and need not include a Common Cap or Preferred
Cap); or 
 (b) the issuer of such securities may, in its sole discretion, defer in whole or in part payment of Distributions
on such securities for one or more consecutive Distribution Periods up to ten years, without any remedy other than Permitted Remedies. 
 “Other Qualifying Capital Replacement Covenant” means a replacement capital covenant, as identified by the Corporation’s Board of Directors acting in good faith and in its reasonable discretion and reasonably
construing the definitions and other terms of this Replacement Capital Covenant, (i) entered into by a company that at the time it enters into such 

  

 9 

 
replacement capital covenant is a reporting company under the Exchange Act and (ii) that restricts the related issuer from redeeming or purchasing
identified securities except from the applicable percentage of the proceeds of specified replacement capital securities that have terms and provisions at the time of redemption or purchase that are as or more equity-like than the securities then
being redeemed or purchased, raised within 180 days prior to the applicable redemption or purchase date. 
 “Permitted
Remedies” means, with respect to any securities, one or more of the following remedies: 
 (a) rights in favor of the
holders of such securities permitting such holders to elect one or more directors of the issuer (including any such rights required by the listing requirements of any stock or securities exchange on which such securities may be listed or traded),
and 
 (b) complete or partial prohibitions preventing the issuer from paying Distributions on or purchasing Common Stock or
other securities that rank pari passu with or junior as to Distributions to such securities for so long as Distributions on such securities, including unpaid Distributions, remain unpaid. 
 “Person” means any individual, corporation, partnership, joint venture, trust, limited liability company or corporation, unincorporated
organization or government or any agency or political subdivision thereof. 
 “Prospectus” has the meaning specified in
Recital B. 
 “Qualifying Capital Securities” means securities (other than Common Stock, Qualifying Warrants, Mandatorily
Convertible Preferred Stock, Debt Exchangeable for Preferred Equity and Debt Exchangeable for Common Equity) that, in the determination of the Corporation’s Board of Directors reasonably construing the definitions and other terms of this
Replacement Capital Covenant, meet one of the following criteria: 
 (a) in connection with any repayment, redemption or
purchase of DISCS on or prior to February 7, 2037: 
 (i) securities issued by the Corporation or its Subsidiaries that
(A) rank pari passu with or junior to the DISCS upon the liquidation, dissolution or winding up of the Corporation, (B) have no maturity or a maturity of at least 60 years and (C) either (x) are subject to a replacement
capital covenant substantially similar to this Replacement Capital Covenant or an Other Qualifying Capital Replacement Covenant and have either a No Payment Provision or are Non-Cumulative or (y) have a Mandatory Trigger Provision and are
subject to Intent-Based Replacement Disclosure and have either an Optional Deferral Provision or a No Payment Provision; or 
 (ii) preferred stock issued by the Corporation or its Subsidiaries that (A) is Non-Cumulative, (B) has no prepayment obligation on the part of the issuer thereof, whether at the election of the holders or otherwise, (C) has
no maturity 

  

 10 

 
or a maturity of at least 60 years and (D) either (x) is subject to a replacement capital covenant substantially similar to this Replacement
Capital Covenant or an Other Qualifying Capital Replacement Covenant or (y) has a Mandatory Trigger Provision and is subject to Intent-Based Replacement Disclosure; or 
 (iii) securities issued by the Corporation or its Subsidiaries that (A) rank pari passu or junior to other preferred stock of
the issuer, (B) have no maturity or a maturity of at least 40 years, (C) are subject to a replacement capital covenant substantially similar to this Replacement Capital Covenant or an Other Qualifying Capital Replacement Covenant,
(D) have an Optional Deferral Provision and (E) have a Mandatory Trigger Provision; or 
 (b) in connection with any
repayment, redemption or purchase of DISCS at any time after February 7, 2037 but on or prior to February 7, 2057: 
 (i) all securities described under clause (a) of this definition; 
 (ii) securities issued by the Corporation
or its Subsidiaries that (A) rank pari passu with or junior to the DISCS upon a liquidation, dissolution or winding up of the Corporation, (B) have no maturity or a maturity of at least 60 years, (C) are subject to a
replacement capital covenant substantially similar to this Replacement Capital Covenant or an Other Qualifying Capital Replacement Covenant and (D) have an Optional Deferral Provision; 
 (iii) securities issued by the Corporation or its Subsidiaries that (A) rank pari passu with or junior to the DISCS upon a
liquidation, dissolution or winding up of the Corporation, (B) are Non-Cumulative or have a No Payment Provision and (C) (x) have no maturity or a maturity of at least 60 years and (y) are subject to Intent-Based Replacement
Disclosure; 
 (iv) securities issued by the Corporation or its Subsidiaries that (A) rank pari passu with or
junior to the DISCS upon a liquidation, dissolution or winding up of the Corporation, (B) are Non-Cumulative or have a No Payment Provision, (C) have no maturity or a maturity of at least 40 years and (D) are subject to a replacement
capital covenant substantially similar to this Replacement Capital Covenant or an Other Qualifying Capital Replacement Covenant; 
 (v) securities issued by the Corporation or its Subsidiaries that (A) rank pari passu with or junior to the DISCS upon a liquidation, dissolution or winding up of the Corporation, (B) have an Optional Deferral Provision,
(C) have a Mandatory Trigger Provision and (D) have no maturity or a maturity of at least 60 years; 
 (vi)
cumulative preferred stock issued by the Corporation or its Subsidiaries that (A) has no prepayment obligation on the part of the issuer thereof, whether at the election of the holders or otherwise, and (B) (x) has no maturity or a
maturity of at least 60 years and (y) is subject to a replacement capital covenant substantially similar to this Replacement Capital Covenant or an Other Qualifying Capital Replacement Covenant; or 
  

 11 

 (vii) other securities issued by the Corporation or its Subsidiaries that (A) rank
upon a liquidation, dissolution or winding-up of the Corporation either (x) pari passu with or junior to the DISCS or (y) pari passu with the claims of the Corporation’s trade creditors and junior to all of the
Corporation’s long-term indebtedness for money borrowed (other than the Corporation’s long-term indebtedness for money borrowed from time to time outstanding that by its terms ranks pari passu with such securities on a liquidation,
dissolution or winding-up of the Corporation), (B) have an Optional Deferral Provision or a No Payment Provision and (C) have a Mandatory Trigger Provision and (D) either (x) have no maturity or a maturity of at least 40 years
and Intent-Based Replacement Disclosure or (y) have no maturity or a maturity of at least 30 years and are subject to a replacement capital covenant substantially similar to this Replacement Capital Covenant or an Other Qualifying Capital
Replacement Covenant; or 
 (c) in connection with any repayment, redemption or purchase of DISCS at any time after
February 7, 2057: 
 (i) securities described under clause (b) of this definition; 
 (ii) preferred stock issued by the Corporation that (A) (x) has no maturity or a maturity of at least 60 years and (y) is
subject to Intent-Based Replacement Disclosure and (B) is Non-Cumulative; 
 (iii) securities issued by the Corporation
or its Subsidiaries that (A) rank pari passu with or junior to the DISCS upon a liquidation, dissolution or winding up of the Corporation, (B) either (x) have no maturity or a maturity of at least 40 years and are subject to
Intent-Based Replacement Disclosure or (y) have no maturity or a maturity at least 30 years and are subject to a replacement capital covenant substantially similar to this Replacement Capital Covenant or an Other Qualifying Capital Replacement
Covenant and (C) are Non-Cumulative; 
 (iv) securities issued by the Corporation or its Subsidiaries that (A) rank
pari passu with or junior to the DISCS upon a liquidation, dissolution or winding up of the Corporation, (B) have an Optional Deferral Provision, (C) have a Mandatory Trigger Provision, (D) have no maturity or a maturity at
least 30 years and (E) are subject to Intent-Based Replacement Disclosure; or 
 (v) cumulative preferred stock issued by
the Corporation or its Subsidiaries that either (A) (x) has no maturity or a maturity of at least 60 years and (y) are subject to Intent-Based Replacement Disclosure or (B) has a maturity of at least 40 years and is subject to a
replacement capital covenant substantially similar to this Replacement Capital Covenant or an Other Qualifying Capital Replacement Covenant. 
  

 12 

 “Qualifying Non-Cumulative Perpetual Preferred Stock” means non-cumulative preferred
stock of the Corporation that ranks pari passu with or junior to all other preferred stock of the Corporation, is perpetual and (a) is subject to a replacement capital covenant substantially similar to this Replacement Capital Covenant
or an Other Qualifying Capital Replacement Covenant or (b) is subject to both (i) mandatory suspension of dividends in the event the Corporation breaches certain financial metrics specified within the offering documents, and
(ii) Intent-Based Replacement Disclosure. Additionally, in both (a) and (b) the transaction documents shall provide for no remedies as a consequence of non-payment of Distributions other than Permitted Remedies. 
 “Qualifying Warrants” means any net share settled warrants to purchase the Corporation’s Common Stock that (1) have an
exercise price greater than the current stock market price, determined as specified in the instrument governing such warrants, of the Corporation’s Common Stock, and (2) the Corporation is not entitled to redeem for cash and the holders of
which are not entitled to require the Corporation to purchase for cash in any circumstances. 
 “Redesignation Date” means,
as to the Covered Debt in effect at any time, the earliest of (a) the date that is two years prior to the final maturity date of such Covered Debt, (b) if the Corporation elects to redeem or repay, or the Corporation or a Subsidiary of the
Corporation elects to purchase, such Covered Debt either in whole or in part with the consequence that after giving effect to such redemption, repayment or purchase the outstanding principal amount of such Covered Debt is less than $100,000,000, the
applicable redemption, repayment or purchase date and (c) if such Covered Debt is not Eligible Subordinated Debt, the date on which the Corporation issues long-term indebtedness for money borrowed that is Eligible Subordinated Debt. 

“Replacement Capital Covenant” has the meaning specified in the introduction to this instrument. 
 “Replacement Capital Securities” means, 
  

	 	(a)	Common Stock and Qualifying Warrants; 

  

	 	(b)	Mandatorily Convertible Preferred Stock; 

  

	 	(c)	Debt Exchangeable for Preferred Equity; 

  

	 	(d)	Debt Exchangeable for Common Equity; and 

  

	 	(e)	Qualifying Capital Securities. 

 “Scheduled
Maturity Date” means, February 15, 2037, or if that date is not a Business Day, the next Business Day. 
  

 13 

 “Subsidiary” means, at any time, any Person the shares of stock or other ownership
interests of which having ordinary voting power to elect a majority of the board of directors or other managers of such Person are at the time owned, or the management or policies of which are otherwise at the time controlled, directly or indirectly
through one or more intermediaries (including other Subsidiaries) or both, by another Person. 
 “Supplemental Indenture”
means the First Supplemental Indenture, dated as of February 12, 2007, between the Corporation and The Bank of New York, as trustee. 
 “Termination Date” has the meaning specified in Section 4(a). 
  

 14Thrift Plan for Employees of ONEOK, Inc and Subsidiaries

 Exhibit 4.1 
 THRIFT PLAN FOR EMPLOYEES 
 OF ONEOK, Inc. 
 AND SUBSIDIARIES 
 AS
AMENDED AND RESTATED EFFECTIVE JANUARY 1, 2007 

 THRIFT PLAN FOR EMPLOYEES 
 OF ONEOK, Inc. 
 AND SUBSIDIARIES 
 AS AMENDED AND RESTATED EFFECTIVE JANUARY 1, 2007 
 TABLE OF CONTENTS 
  

			
	 ARTICLE
	  	Page
Number
	 INTRODUCTORY STATEMENT
	  	1
		
	 ARTICLE I.
	  	2
		
	 PART A. DEFINITIONS
	  	2
		
	 1.      401(k) Contribution
	  	2
		
	 2.      401(k) Contribution Account
	  	2
		
	 3.      Accrued Benefit
	  	2
		
	 4.      Actual Deferral Percentage
	  	2
		
	 5.      After-Tax Deposits
	  	2
		
	 6.      Bargaining Unit Employee
	  	3
		
	 7.      Bargaining Unit Participant
	  	3
		
	 8.      Board or Board of Directors
	  	3
		
	 9.      Code
	  	3
		
	 10.    Committee
	  	3
		
	 11.    Company
	  	3
		
	 12.    Company Matching Contributions
	  	3
		
	 13.    Compensation
	  	3
		
	 14.    Controlled Affiliate Business Organization
	  	6
		
	 15.    Designation Date
	  	6
		
	 16.    Dividends
	  	6
		
	 17.    ERISA
	  	6
		
	 18.    ESOP Dividend Distribution
	  	6
		
	 19.    ESOP Dividend/401(k) Deferrable Amount
	  	6
		
	 20.    ESOP Dividend Distribution/Additional Deferral
	  	6

  

 i 

			
	 21.    ESOP Dividend Distribution/Additional Deferral Contribution
	  	7
		
	 22.    ESOP Dividends
	  	7
		
	 23.    Effective Date
	  	7
		
	 24.    Elective Deferrals
	  	7
		
	 25.    Employee
	  	7
		
	 26.    Employee Contribution Account
	  	7
		
	 27.    Employee Stock Ownership Plan
	  	8
		
	 28.    Employer Contribution Account
	  	8
		
	 29.    Excess Aggregate Contributions
	  	8
		
	 30.    Excess Contributions
	  	8
		
	 31.    Excess Deferrals
	  	8
		
	 32.    Highly Compensated Employee
	  	8
		
	 33.    Hours of Service
	  	9
		
	 34.    Independent Contractor
	  	10
		
	 35.    KGS 401(k) Thrift Plan
	  	10
		
	 36.    Leased Employee
	  	10
		
	 37.    Matching Contribution Percentage
	  	10
		
	 38.    Matching Contributions
	  	11
		
	 39.    Non-Bargaining Unit Employee
	  	11
		
	 40.    Non-Bargaining Unit Participant
	  	11
		
	 41.    One-Year Break in Service
	  	11
		
	 42.    Participant
	  	11
		
	 43.    Participant Account
	  	11
		
	 44.    Plan
	  	11
		
	 45.    Plan Year
	  	11
		
	 46.    Pre-1987 Employee Contribution Account
	  	11
		
	 47.    Pre-1999 KGS 401(k) Thrift Plan Account
	  	12
		
	 48.    Pre-1999 ONEOK Thrift Plan Account
	  	12
		
	 49.    Prior ONEOK, Inc. Thrift Plan
	  	12
		
	 50.    Qualified Default Investment Alternative
	  	12
		
	 51.    Qualified Matching Contributions
	  	12
		
	 52.    Qualified Non-Elective Contributions
	  	12
		
	 53.    Qualifying Employer Stock
	  	12

  

 ii 

			
	 54.    Reduction in Compensation
	  	12
		
	 55.    Retained Participant Account
	  	13
		
	 56.    Roth 401(k) Elective Deferral
	  	13
		
	 57.    Roth 401(k) Elective Deferral Account
	  	13
		
	 58.    Salaried Employee
	  	13
		
	 59.    Section 16 Person
	  	13
		
	 60.    Separate Section 72(d) Employee Contribution Account
	  	13
		
	 61.    Subsidiary (and Subsidiaries)
	  	13
		
	 62.    Subsidiary Corporation
	  	13
		
	 63.    Transferred 401(k) Account
	  	14
		
	 64.    Transferred KGS 401(k) Thrift Plan Account
	  	14
		
	 65.    Trust
	  	14
		
	 66.    Trustee
	  	14
		
	 67.    USERRA
	  	14
		
	 68.    Year of Service
	  	14
		
	 PART B. AMENDMENT OF THE PLAN FOR EGTRRA
	  	15
		
	 1.      Limitations on Contributions
	  	15
		
	 2.      Increase in Compensation Limit
	  	15
		
	 3.      Modification of Top-Heavy Rules
	  	16
		
	 4.      Vesting of Employer Matching Contributions
	  	17
		
	 5.      Direct Rollovers of Plan Distributions
	  	17
		
	 6.      Rollovers from Other Plans
	  	18
		
	 7.      Rollovers Disregarded in Involuntary Cash-Outs
	  	19
		
	 8.      Repeal of Multiple Use Test
	  	19
		
	 9.      Elective Deferrals – Contribution Limitation
	  	19
		
	 10.    Modification of Top-Heavy Rules
	  	19
		
	 11.    Catch-Up Contributions
	  	19
		
	 12.    Suspension Period Following Hardship Distribution
	  	20
		
	 13.    Distribution Upon Severance From Employment
	  	20
		
	 14.    ESOP Participant Election To Reinvest Dividends
	  	20
		
	 PART C. MODEL PLAN AMENDMENT MINIMUM DISTRIBUTION REQUIREMENTS
	  	22

  

 iii 

			
	 ARTICLE II. ELIGIBILITY AND PARTICIPATION
	  	27
		
	 1.      Eligibility
	  	27
		
	 2.      Commencement of Participation
	  	27
		
	 3.      Participation Voluntary
	  	28
		
	 4.      Confirmation of Participation
	  	28
		
	 5.      Duration of Participation
	  	28
		
	 6.      Reentry of Participant
	  	28
		
	 7.      Breaks in Service
	  	28
		
	 8.      Maternity and Paternity Absences
	  	29
		
	 9.      Eligibility in Case of Merger, Consolidation or Acquisition
	  	29
		
	 10.    Participant Military Service
	  	30
		
	 ARTICLE III. CONTRIBUTIONS FOR PARTICIPANT 401(k) SALARY REDUCTIONS
	  	31
		
	 1.      Company 401(k) Contributions
	  	31
		
	 2.      Cash or Deferral Election
	  	31
		
	 3.      Roth 401(k) Elective Deferrals
	  	34
		
	 4.      ESOP Dividend Distribution/Additional Deferral Contribution
	  	36
		
	 5.      Time of Contribution
	  	36
		
	 6.      USERRA
	  	37
		
	 ARTICLE IV. AFTER-TAX PARTICIPANT CONTRIBUTIONS
	  	38
		
	 1.      Percentage of After-Tax Deposits
	  	38
		
	 2.      Change of Percentage of After-Tax Deposits
	  	39
		
	 3.      Deposit by Payroll Deduction
	  	39
		
	 4.      Transfer to Trust
	  	39
		
	 5.      USERRA
	  	39
		
	 ARTICLE V. ROLLOVERS, TRANSFERRED ACCOUNTS
	  	40
		
	 1.      Rollover from Other Plans of The Company
	  	40
		
	 2.      Trust to Trust Transfers From Other Plans of The Company
	  	40
		
	 3.      Trust to Trust Transfers From Plans of Other Employers
	  	41
		
	 4.      Direct Rollovers From Qualified Plans of Other Employers
	  	41
		
	 5.      Direct Rollovers
	  	42

  

 iv 

			
	 ARTICLE VI. SUSPENSION OF SALARY REDUCTIONS, DEPOSITS
	  	43
		
	 1.      Suspension of Reduction in Compensation or After-Tax Deposits by Participant for Deficiency in
Compensation
	  	43
		
	 2.      Reinstatement of Voluntarily Suspended Reduction in Compensation or After-Tax Deposits
	  	43
		
	ARTICLE VII. COMPANY MATCHING CONTRIBUTIONS	  	44
		
	 1.      Company Matching Contributions
	  	44
		
	 2.      Participant’s Matching Contribution Account
	  	45
		
	 3.      Re-entry of Participant
	  	45
		
	 4.      USERRA
	  	46
		
	 ARTICLE VIII. LIMITATIONS ON CONTRIBUTIONS AND ANNUAL ADDITIONS
	  	47
		
	 1.      General
	  	47
		
	 2.      Elective Deferral Limitations
	  	47
		
	 3.      Actual Deferral Percentage Limitations
	  	47
		
	 4.      Limitations on Company Matching Contributions
	  	48
		
	 5.      Separate Application of Limitations
	  	48
		
	 6.      Multiple Use of Alternative Limitation
	  	49
		
	 7.      Maximum Annual Additions
	  	49
		
	 8.      No Return or Diversion of Contributions Except for Mistake
	  	51
		
	 9.      Distribution of Excess Deferrals
	  	51
		
	 10.    Excess 401(k) Contributions
	  	51
		
	 11.    Excess Aggregate Contributions
	  	53
		
	 12.    Qualified Nonelective and Matching Contributions
	  	55
		
	 13.    Plan Not Dependent Upon Earnings; Company Contributions Limited to Earnings
	  	56
		
	 14.    Maximum Contribution
	  	56
		
	 15.    Application of Dollar Leveling Method.
	  	56
		
	 ARTICLE IX. INVESTMENT PROVISIONS
	  	58
		
	 1.      Participant Directed Investment
	  	58
		
	 2.      Time of Action by Trustee on Investments
	  	62
		
	 3.      Participant Rights as to Options, Rights, and Warrants
	  	62
		
	 4.      Redemption of Nontransferable Securities
	  	63
		
	 5.      Manner of Holding Cash and Securities
	  	63

  

 v 

			
	 6.      Voting of Shares
	  	63
		
	 7.      Tender Offers
	  	64
		
	 8.      Section 16 Person Limitations; Discretionary Transactions
	  	65
		
	 9.      Employee Stock Ownership Plan (ESOP)
	  	65
		
	 10.    Investment Diversification
	  	68
		
	 11.    No Guarantee or Indemnity
	  	68
		
	 ARTICLE X. CREDITS AND CHARGES TO A PARTICIPANT’S ACCOUNT
	  	69
		
	 1.      General Charges and Credits
	  	69
		
	 2.      ESOP Dividend Distributions
	  	69
		
	 3.      Calculation of Charges and Credits to Participant Accounts
	  	71
		
	 4.      Commissions, Taxes, and Charges on Security Purchases and Sales
	  	71
		
	 5.      Investment Management Fees
	  	71
		
	 6.      Allocation of Plan Administrative Expenses
	  	71
		
	 7.      Calculation of Credits for Redemption
	  	71
		
	 8.      Taxes
	  	71
		
	 ARTICLE XI. VESTING AND LIQUIDATION OF ACCOUNTS
	  	72
		
	 1.      Vesting of Participant and Company Contributions
	  	72
		
	 2.      Withdrawals
	  	72
		
	 3.      Distribution of Participant Accounts
	  	72
		
	 4.      Time of Distribution
	  	73
		
	 5.      ESOP Stock Distributions
	  	73
		
	 6.      Participant Election to Defer Distribution
	  	74
		
	 7.      Sequence of Deferred Distribution of Accounts
	  	74
		
	 8.      Deferred Distribution at Age 70 1/2
	  	74
		
	 9.      Distribution of Deferred Accounts at Death of Participant
	  	75
		
	 10.    Mandatory Time of Distribution
	  	75
		
	 11.    Form of Distributions
	  	75
		
	 12.    Participant’s Right to Demand Employer Securities
	  	76
		
	 13.    Qualified Domestic Relations Orders; Distributions
	  	76
		
	 ARTICLE XII. WTHDRAWALS, DISTRIBUTIONS, PLAN LOANS
	  	77
		
	 1.      Withdrawals from 401(k) Contribution Account
	  	77
		
	 2.      Participant Withdrawals of After-Tax Deposits
	  	79
		
	 3.      Withdrawal Penalty
	  	79

  

 vi 

			
	 4.      Participant Withdrawals of Matching Contributions or Other Amounts
	  	80
		
	 5.      Sequence of Permitted Withdrawals
	  	80
		
	 6.      Voluntary Withdrawal After Age Fifty-Nine and One-Half (59 1/2)
	  	80
		
	 7.      Distributions in Certain Events
	  	80
		
	 8.      ESOP Dividend Distributions
	  	81
		
	 9.      No Withdrawal of Deferred Account
	  	81
		
	 10.    Limited Withdrawal Rights; Pre-1999 KGS 401(k) Thrift Plan Account
	  	81
		
	 11.    Suspension During Approved Leave of Absence
	  	83
		
	 12.    Effect of Termination or Suspension of Participation
	  	83
		
	 13.    No Forfeiture for Suspension or Termination
	  	83
		
	 14.    Termination of Plan
	  	83
		
	 15.    Valuation of Securities
	  	83
		
	 16.    Participant Loan Program
	  	84
		
	 17.    No Withdrawal of Loan Amount
	  	85
		
	 ARTICLE XIII. BENEFICIARIES IN THE EVENT OF DEATH
	  	86
		
	 1.      Surviving Spouse as Primary Beneficiary
	  	86
		
	 2.      Election and Consent to Alternate Beneficiary or Beneficiaries
	  	86
		
	 3.      Designation of Beneficiary or Beneficiaries
	  	86
		
	 4.      Payment and Distribution to Beneficiary or Beneficiaries
	  	87
		
	 ARTICLE XIV. SUBSIDIARIES
	  	88
		
	 ARTICLE XV. ADMINISTRATION
	  	89
		
	 1.      Thrift Plan Committee
	  	89
		
	 2.      Trust, Trustee and Committee
	  	89
		
	 3.      Plan Fiduciaries
	  	90
		
	 4.      Action by Thrift Plan Committee
	  	90
		
	 5.      Costs of Plan Administration
	  	90
		
	 6.      Uniform and Nondiscriminatory Application
	  	90
		
	 7.      Summary Plan Description; Committee Decisions; Procedures
	  	91
		
	 8.      Recognition of Agency Relationships
	  	92
		
	 9.      Valuation of Trust Assets
	  	92
		
	 10.    Audit
	  	92
		
	 11.    Annual Reports
	  	92
		
	 12.    ONECU Plan Sponsorship
	  	92

  

 vii 

			
	 ARTICLE XVI. NOTICES AND OTHER COMMUNICATIONS
	  	93
		
	 1.      Delivery of Notices and Other Documents
	  	93
		
	 2.      Delivery of Communications by Participants
	  	93
		
	 ARTICLE XVII. NON-ASSIGNABILITY
	  	94
		
	 1.      General
	  	94
		
	 2.      Loans
	  	94
		
	 3.      Qualified Domestic Relations Orders
	  	94
		
	ARTICLE XVIII. TERMS OF EMPLOYMENT UNAFFECTED	  	95
		
	ARTICLE XIX. CONSTRUCTION OF PLAN	  	96
		
	ARTICLE XX. EFFECTIVE DATE	  	97
		
	ARTICLE XXI. TOP-HEAVY RULES	  	98
		
	 1.      Minimum Contribution
	  	98
		
	 2.      Rate of Minimum Contribution
	  	98
		
	 3.      Top-Heavy Status Determination
	  	99
		
	 4.      Top-Heavy Contribution Limits
	  	99
		
	 5.      Vesting
	  	99
		
	 6.      Definitions
	  	100
		
	ARTICLE XXII. TRANSFERRED SUBSIDIARY PLAN ACCOUNTS	  	102
		
	 1.      General
	  	102
		
	 2.      Separate Accounting and Accrual
	  	102
		
	 3.      Other Plan Provisions Applicable
	  	102
		
	 4.      ONEOK Drilling Plan Transferred Account Annuity Conversion
	  	102
		
	 5.      Distributions
	  	103
		
	 6.      Consent of Distribution
	  	103
		
	 7.      Time of Distribution
	  	103
		
	 8.      Qualified Joint and Survivor Annuity; Qualified Preretirement Survivor Annuity
	  	104
		
	 9.      Notices; Waiver Election
	  	105
		
	 10.    Definitions; and Applicable Rules
	  	106
		
	ARTICLE XXIII. NGC PROFIT SHARING/401(k) SAVINGS PLAN TRANSFERRED ACCOUNTS	  	108
		
	 PART A. General Provisions/Administration of Transferred NGC Accounts
	  	108
		
	 1.      General
	  	108

  

 viii 

			
		
	 2.      Separate Accounting and Accrual
	  	108
		
	 3.      Other Plan Provisions Applicable
	  	108
		
	 PART B. Transferred NGC Accounts; Retirement Benefits
	  	109
		
	 PART C. Transferred NGC Accounts; Disability Benefits
	  	109
		
	 1.      Disability Benefits
	  	109
		
	 2.      Total and Permanent Disability Determined
	  	109
		
	 PART D. Transferred NGC Accounts; Severance Benefits
	  	109
		
	 PART E. Transferred NGC Accounts; Death Benefits
	  	110
		
	 PART F. Transferred NGC Accounts; Time and Form of Payment of Benefits
	  	110
		
	 1.      Time of Payment
	  	110
		
	 2.      Standard and Alternative Forms of Benefit for Participants
	  	112
		
	 3.      Standard and Alternative Forms of Death Benefit
	  	114
		
	 4.      Cash-Out of Benefit
	  	116
		
	 5.      Direct Rollover Election
	  	116
		
	 6.      Benefits from Account Balances
	  	116
		
	 7.      Commercial Annuities
	  	116
		
	 8.      Present Value Determinations
	  	117
		
	 9.      Unclaimed Benefits
	  	117
		
	 10.    Claims Review
	  	117
		
	 PART G. Transferred NGC Accounts; In-Service Withdrawals
	  	118
		
	 1.      In-Service Withdrawals
	  	118
		
	 2.      Restriction on In-Service Withdrawals
	  	121
		
	 3.      Withdrawal Exception
	  	121
		
	 PART H. Definitions
	  	121
		
	 1.      Annuity Starting Date
	  	121
		
	 2.      Eligible Surviving Spouse
	  	122
		
	 3.      Normal Retirement Date
	  	122
		
	 4.      Transferred NGC After-Tax Account
	  	122
		
	 5.      Transferred NGC Before-Tax Account
	  	122
		
	 6.      Transferred NGC Rollover Contribution Account
	  	122
		
	 7.      Vested Interest
	  	122
		
	ARTICLE XXIV. MODIFICATION AND TERMINATION	  	123
		
	 1.      Amendment and Termination of Plan
	  	123

  

 ix 

			
	 2.      Limit to Effect of Modification
	  	123
		
	 3.      Participant Rights in Case of Modification
	  	123
		
	 4.      Nonforfeitability
	  	123
		
	 5.      Termination Distributions
	  	124

  

 x 

 THRIFT PLAN FOR EMPLOYEES 
 OF ONEOK, Inc. 
 AND SUBSIDIARIES 
 AS AMENDED AND RESTATED EFFECTIVE JANUARY 1, 2007 
 INTRODUCTORY STATEMENT 
 This Plan is an amendment, restatement, and continuation of the
Thrift Plan for Employees of ONEOK, Inc. and Subsidiaries. This amended and restated Plan replaces all prior documents and amendments, and is effective as of the Effective Date determined by the Board of Directors of ONEOK, Inc. and its
subsidiaries. 
 The purposes of the Plan and the Trust established thereunder are to provide for deferred compensation and benefits for
eligible employees through a qualified profit-sharing plan and, in part, with respect to the investment in securities of ONEOK, Inc., through an employee stock ownership plan which constitutes a qualified stock bonus plan. The Plan is intended in
all respects to be qualified under the Internal Revenue Code of 1986, as amended. 
  

 - 1 - 

 ARTICLE I. 
 PART A. 
 DEFINITIONS 
 As used in this Plan, unless otherwise required by the context, the following words and phrases shall have the meanings indicated: 
 PARAGRAPH 
 1. 401(k) Contribution 
 The amount contributed by the Company in accordance with paragraphs 1., 2., and 3. of Article III. 
 2. 401(k) Contribution Account 
 The account of a Participant established and maintained for 401(k) Contributions of
the Company made for such Participant in accordance with paragraph 2. of Article III. 
 3. Accrued Benefit 
 The balance of all accounts established and maintained for a Participant pursuant to this Plan. A Participant’s Accrued Benefit from Company contributions as of any
applicable date is the excess, if any, of the Accrued Benefit of such Participant as of such date over the Accrued Benefit of such Participant derived from contributions made by such Participant on such date; and the Accrued Benefit derived from
contributions made by a Participant as of any applicable date is the balance of the Participant’s Accounts consisting only of his/her contributions and the income, expenses, gains and losses attributable thereto. 
 4. Actual Deferral Percentage 
 The Actual Deferral Percentage for a
specified group of Employees (either Highly Compensated Employees or all other Employees eligible to participate in this Plan who are not Highly Compensated Employees) for a Plan Year is the average of the ratios, calculated separately for each
employee in such group, of the amount of the Employer’s 401(k) Contribution paid on behalf of each such Employee for the Plan Year to such Employee’s Compensation for the Plan Year. The Employer may, from time to time in its discretion,
and to the extent permitted by Section 401(k) of the Code, calculate such ratios by adding to the 401(k) Contribution for such Employee the Matching Contribution paid for the benefit of such Employee and qualified nonelective contributions
(within the meaning of Code Section 401(m)(4)(C)). 
 5. After-Tax Deposits 
 The deposits and contributions of Participants made to this Plan pursuant to paragraph 1. of Article IV. 
  

 - 2 - 

 6. Bargaining Unit Employee 
 Any Employee who is represented by a collective bargaining unit which includes Group A Bargaining Unit Employees and Group B Bargaining Unit Employees; with “Group A Bargaining Unit Employees”, meaning any Employee who is
represented by Locals 12329, 12561, 13417, 14224, 14228, and 15162 of the United Steel Workers of America, Local 781 of the Gas Workers, Metal Trades Union for the Cities of Monett and Kansas City, Missouri, and Beloit, Kansas and Local 126 of the
International Union of Operating Engineers; and “Group B Bargaining Unit Employees”, meaning any Employee who is represented by Local 304 and Local 1523 of the International Brotherhood of Electrical Workers. 
 7. Bargaining Unit Participant 
 Any Participant who is a Bargaining
Unit Employee. 
 8. Board or Board of Directors 
 The
Board of Directors of the Company. 
 9. Code 
 The
Internal Revenue Code of 1986, as amended. 
 10. Committee 
 The Thrift Plan Committee created by paragraph 1. of Article XV hereof. 
 11. Company 
 ONEOK, Inc., an Oklahoma corporation, and its Subsidiaries. 
 12. Company
Matching Contributions 
 The matching contribution made by the Company pursuant to Article VII of the Plan with respect to the Reductions in Compensation
and After-Tax Deposits of the Participant. 
 13. Compensation 
 A. Non-Bargaining Unit Participants. The total annual base salary plus any lump sum merit pay and promotion awards, gainshare awards, cash incentive compensation, commissions, overtime pay, and shift differentials paid to a
Participant by the Company, but excluding amounts deferred contributed by the Company or deferred by the Participant under a plan of deferred compensation to the extent that such contributions or deferrals are not includible in gross income of the
Participant for the taxable year in which contributed or deferred. Provided, that any reduction in salary elected and deferred by the Participant under the cash or deferred arrangement of Article III of the Plan or under Code Sections 125,
132(f)(4), 402(e)(8) and 457 pursuant to the employee benefit plans of the Company shall be included in determining compensation hereunder. For purposes of this definition incentive compensation shall be treated 

  

 - 3 - 

 
as paid to a Participant at the time of actual payment. Provided, further, that the annual compensation of each Participant taken into account under this
Plan for any year shall not exceed two hundred thousand dollars ($200,000) in the years beginning after December 31, 1988, and before January 1, 1994, (such two hundred thousand dollars ($200,000) amount to be adjusted to reflect increases
in the cost-of-living in accordance with Code Sections 401(a)(17) and 415(d)). In addition to other applicable limitations set forth in the Plan, and notwithstanding any other provision of the Plan to the contrary, for Plan Years beginning on or
after January 1, 1994, the annual compensation of each Employee taken into account under the Plan shall not exceed the OBRA ‘93 annual compensation limit. The OBRA ‘93 annual compensation limit is $150,000, as adjusted by the
Commissioner of the Internal Revenue Service for increases in the cost-of-living in accordance with Code Section 401(a)(17)(B). The cost-of-living adjustment in effect for a calendar year applies to any period, not exceeding 12 months, over
which compensation is determined (determination period) beginning in such calendar year. If a determination period consists of fewer than 12 months, the OBRA ‘93 annual compensation limit will be multiplied by a fraction, the numerator of which
is the number of months in the determination period, and the denominator of which is 12. For Plan Years beginning on or after January 1, 1994, any reference in this Plan to the limitation under Section 401(a)(17) of the Code shall mean the
OBRA ‘93 annual compensation limit set forth in this provision. If compensation for any prior determination period is taken into account in determining an Employee’s benefits accruing in the current Plan Year, the compensation for that
prior determination period is subject to the OBRA ‘93 annual compensation limit in effect for that prior determination period. For this purpose, for determination periods beginning before the first day of the first Plan Year beginning on or
after January 1, 1994, the OBRA ‘93 annual compensation limit is one hundred fifty thousand dollars ($150,000). 
 Provided, further, that
notwithstanding anything to the contrary contained in the Plan, any payment or distribution made to an Employee pursuant to the ONEOK Energy Marketing & Trading Group Bonus Plan shall be excluded from, and not considered as Compensation of
such Employee under this Plan. 
 Provided, further, that the annual compensation of each Participant taken into account under Plan for any year beginning
after December 31, 2001 shall not exceed $200,000 and such $200,000 amount shall be adjusted to reflect increases in the cost-of-living in accordance with Code Sections 401(a)(17) and 415(d). 
 If any individual is a member of the family of such Participant, such individual shall not be considered a separate Employee; and any compensation paid to such
individual shall be treated as if it were paid to (or on behalf of) such Participant, with the term “family” for such purpose meaning the spouse of the Participant and any lineal descendants of the Participant who have not attained age 19
before the close of the year. Provided, that effective for years beginning after December 31, 1996, the family aggregation rules of Code section 414(q)(6) repealed by the Small Business Job Protection Act of 1996, shall have no application to
the Plan. 
  

 - 4 - 

 B. Bargaining Unit Participants. For Bargaining Unit Participants the term “Compensation” for purposes
of this Plan shall include “Adjusted Total Compensation” and “Annual Compensation”, defined as follows: 
 “Adjusted Total
Compensation” shall mean an active Bargaining Unit Participant’s Annual Compensation unreduced by overtime, bonuses, and commissions. 
 “Annual Compensation” shall mean the base salary or wage paid to an active Bargaining Unit Participant during a calendar year by the Company, exclusive of overtime, bonuses, commissions, the value of group
life insurance in excess of $50,000, reimbursement for moving expenses or tuition, or any other payments made by the Company on behalf of an Employee under any other deferred compensation or welfare plan. Provided, that on and after July 20,
2003, “Annual Compensation” for any Group B Bargaining Unit Employee who is represented by Local 304 and Local 1523 of the International Brotherhood of Electrical Workers shall include the base salary or wage paid to such an active Group B
Bargaining Unit Employee during a calendar year by the Company plus overtime, shift differential, call out, call out 7th day, FLSA OT ADJ, meal not eaten, OT double time, OT straight time, OT time and one-half, overtime, standby half pay, standby quarter pay and all earning elements included in compensation for purposes of the Plan prior to such date.
Annual Compensation shall be such amount prior to any payroll reduction for a Participant Reduction in Compensation or amounts excludible from the Employee’s gross income under Code Sections 125, 132(f)(4), 402(e)(8) and 457. 
 The Annual Compensation and Adjusted Total Compensation of each active Bargaining Unit Participant taken into account for determining all benefits provided under the
Plan for any Plan Year beginning on or after January 1, 1997, shall not exceed $160,000 as adjusted for increases in the cost-of-living in accordance with Code Section 401(a)(17)(B). The cost-of-living adjustment in effect for a calendar
year applies to any determination period beginning in such calendar year. 
 Provided, further, that the annual compensation of each Participant taken into
account under Plan for any year beginning after December 31, 2001 shall not exceed $200,000 and such $200,000 amount shall be adjusted to reflect increases in the cost-of-living in accordance with Code Sections 401(a)(17) and 415(d).

 In determining the compensation of any Employee for purposes of this limitation, the rules of Section 414(q)(6) of the Code shall apply, except in
applying such rules, the term “family” shall include only the spouse of the Employee and any lineal descendants of the Employee who have not attained age 19 before the close of the year. If, as a result of the application of such rules,
the adjusted $160,000 limitation is exceeded, then the limitation shall be prorated among the affected individuals in proportion to each such individual’s compensation as determined under this Section before application of this limitation.
Provided, that effective for years beginning after December 31, 1996, the family aggregation rules of Code Section 414(q)(6) repealed by the Small Business Job Protection Act of 1996, shall have no application to the Plan. 
 If a determination period consists of fewer than 8 months, the Annual Compensation and Adjusted Total Compensation limit is an amount equal to the otherwise applicable
Annual Compensation and Adjusted Total Compensation limit multiplied by a fraction, the numerator of which is the number of months in the short determination period, and the denominator of which is 12. 
  

 - 5 - 

 14. Controlled Affiliate Business Organization 
 Any business organization or entity (including, without limitation, a corporation, general partnership, limited partnership, or limited liability company) that is in one or more chains of such organizations conducting
trades or businesses connected through ownership of a 100 percent ownership interest in which (i) ONEOK, Inc., an Oklahoma corporation, is the common parent business organization and (ii) a 100 percent ownership interest in each of the
organizations, except ONEOK, Inc., is owned directly by one or more of the other organizations, and (iii) ONEOK, Inc. owns a 100 percent ownership interest in at least one of the other organizations. For purposes of the foregoing provisions of
this definition, “100 percent ownership interest” means, in the case of an organization which is a partnership or limited liability company, ownership of 100 percent of the profits interest or capital interest of such partnership or
limited liability company. 
 15. Designation Date 
 The
Designation Date under the Plan shall be January 1, April 1, July 1 and October 1 of each Plan Year, at which times a Participant may designate (or leave in effect) his/her election to defer receipt of cash Compensation
and/or to make After-Tax Deposits, as provided in paragraph 2. of Article III, and paragraph 2. of Article IV, below. 
 16. Dividends 
 All cash, stock, rights or other property distributed by the Company pro rata to holders of any class of its capital stock. 
 17. ERISA 
 Employee Retirement Income Security Act of 1974, as
amended. 
 18. ESOP Dividend Distribution 
 A payment in
cash of ESOP Dividends to a Participant and/or distribution in cash to a Participant of ESOP Dividends paid to the Trust of the Plan, on ONEOK, Inc. Common Stock in the Participant Account of such Participant (and such payments and distributions to
a retired or terminated Employee) pursuant to paragraph 2. of Article X. 
 19. ESOP Dividend/401(k) Deferrable Amount 
 The maximum amount which may be deferred by a Participant with respect to an ESOP Dividend Distribution paid and distributed to such Participant under the provisions of
paragraph 3.A. of Article III, and the applicable limitations of the Plan and the Code pertaining to cash or deferral elections by a Participant. 
 20.
ESOP Dividend Distribution/Additional Deferral 
 An elective deferral of Compensation made by a Participant with respect to an ESOP Dividend Distribution
paid and distributed to such Participant, as provided in paragraph 3. of Article III. 
  

 - 6 - 

 21. ESOP Dividend Distribution/Additional Deferral Contribution 
 The amount contributed by the Company to the Trust of the Plan with respect to the ESOP Dividend Distribution/Additional Deferral made and elected by a Participant under
paragraph 3. of Article III. 
 22. ESOP Dividends 
 The
dividends paid to Participants or to the Trust of the Plan on ONEOK, Inc. Common Stock in the Participant Account of such a Participant, or a retired or terminated Employee. 
 23. Effective Date 
 The date upon which the Plan initially became effective as determined by the Board of Directors
in the manner provided in Article XX hereof. 
 24. Elective Deferrals 
 With respect to any taxable year, the sum of (i) any employer contribution under a qualified cash or deferred arrangement (as defined in Code Section 401(k)) to the extent not includible in gross income for
the taxable year under Code Section 402(e)(3) (determined without regard to Code Section 402(g)), (ii) any employer contribution to the extent not includible in gross income for the taxable year under Code Section 402(h)(1)(B)
(determined without regard to Code Section 402(g)), and (iii) any employer contribution to purchase an annuity contract under Code Section 403(b) under a salary reduction agreement (within the meaning of Code Section 3121(D),
except as provided in Code Section 402(g)(3)). 
 25. Employee 
 Any person employed by the Company, including officers and others engaged in the management of the business, provided such person is in active service of the Company; but not including Directors who are not officers
of the Company, and not including Independent Contractors and Leased Employees. Leased Employees shall be considered as employees of the Company for purposes of determining if the Plan meets participation, coverage or other applicable requirements
for qualification of the Plan under Code Section 401, but such Leased Employees are not eligible to participate in the Plan, and are excluded from the definition of Employee under this paragraph. 
 26. Employee Contribution Account 
 An amount to be separately
accounted for and maintained for each Participant to which all Participant After-Tax Deposits (other than those accounted for and maintained as his/her Separate Section 72(d) Employee Contribution Account), and all earnings, income, expenses,
gains, and losses attributable thereto shall be charged and credited pursuant to of Article X hereof. 
  

 - 7 - 

 27. Employee Stock Ownership Plan 
 That portion of the Plan under which Employee Stock Ownership Plan (ESOP) Participant Accounts are invested in ONEOK, Inc. Common Stock pursuant to paragraph 1., Article IX, and held and administered in accordance
with the provisions of paragraph 9. of Article IX, and other pertinent provisions of the Plan. 
 28. Employer Contribution Account 
 An amount to be separately accounted for and maintained for each Participant to which all Company contributions for such Participant and all earnings, expenses, gains,
and losses attributable thereto shall be charged and credited. 
 29. Excess Aggregate Contributions 
 With respect to any Plan Year, the excess of (i) the aggregate Contribution Percentage Amounts taken into account in computing the numerator of the Contribution
Percentage actually made on behalf of Highly Compensated Employees for such Plan Year, over (ii) the maximum Contribution Percentage Amounts permitted by the Actual Contribution Percentage test (determined by reducing contributions made on
behalf of Highly Compensated Employees in order of their Contribution Percentages beginning with the highest of such percentages). Such determination shall be made after first determining Excess Elective Deferrals and then determining Excess
Contributions. 
 30. Excess Contributions 
 The excess
with respect to any Plan Year of (i) the aggregate amount of Company contributions actually paid over to the Trust of the Plan on behalf of Highly Compensated Employees and taken into account in computing the Actual Deferral Percentage for such
Highly Compensated Employees for such Plan Year over (ii) the maximum amount of such contributions permitted under Code Section 401(k) discrimination limitations under Code Section 401(k)(3)(A)(ii) (determined by reducing
contributions made on behalf of Highly Compensated Employees in order of the Actual Deferral Percentages beginning with the highest of such percentages). 
 31. Excess Deferrals 
 Any amount of Elective Deferrals of any Participant which is included in such Participant’s gross income pursuant
to the limitation on the exclusion of such Elective Deferrals provided in Code Section 402(g)(1). 
 32. Highly Compensated Employee 

Effective for years beginning after December 31, 1996, the term “Highly Compensated Employee” means any Employee who: (1) was a five-percent
(5%) owner at any time during the year or the preceding year, or (2) for the preceding year had compensation from the Company in excess of eighty thousand dollars ($80,000) and, if the Company so elects, was in the top-paid group for the
preceding year. The eighty thousand dollar ($80,000) amount is adjusted at the same time and in the same manner as under Code Section 415(d), except that the base period is 

  

 - 8 - 

 
the calendar quarter ending September 30, 1996. For purposes of the foregoing the “applicable year” of the Plan for which a determination is
being made is called a “determination year” and the preceding 12-month period is called a look-back year. A highly compensated former employee shall be determined and based on the rules applicable to determining Highly Compensated Employee
status as in effect for a determination year, in accordance with Treasury Regulation § 1,414(q)-1T, A-4 and Internal Revenue Service notice 97-45. In determining whether an employee is a Highly Compensated Employee for years beginning in 1997,
the definitional amendments to Code Section 414(q) contained herein shall be treated as having been in effect for years beginning in 1996. An Employee shall be treated as a five-percent (5%) owner for any year if at any time during such
year such Employee was a five-percent (5%) owner (as defined in Code Section 416(i)(1)) of the Company. An Employee is in the top-paid group of Employees for any year if such Employee is in the group consisting of the group consisting of
the top twenty percent (20%) of the Employees when ranked on the basis of compensation paid during such year. 
 For purposes of this paragraph, the
term “compensation” means compensation within the meaning of Code Section 415(c)(3). 
 For purposes of
determining the number of Employees in the top-paid group, there shall be excluded (i) Employees who have not completed six (6) months of service, (ii) Employees who normally work less than 17 1/2 hours per week, (iii) Employees who normally work during not more than six (6) months during any year,
(iv) Employees who have not attained age 21, and (v) except to the extent provided in Treasury regulations, Employees who are included in a unit of Employees covered by an agreement which the Secretary of Labor finds to be a collective
bargaining agreement between employee representatives and the Company. 
 33. Hours of Service 
 All hours for which the Employee is either directly or indirectly compensated by the Company for performing duties for the Company. These hours are to be credited to the
Employee in the computation period during which the duties were performed and not when paid. The determination of the Hours of Service for reasons other than the performance of duties shall be made in accordance with Section 2530.200b-2(b) of
the Department of Labor regulations. The determination of the computation to which the Hours of Service are credited shall be made in accordance with Section 2530.200b-2(c) of Department of Labor regulations. Credit is also to be given for each
hour of back pay for which back pay has been awarded or agreed to by the Employer, and these hours are to be credited to the Employee in the computation period during which the duties were performed and not paid. An Employee should be credited with
Hours of Service for any customary period of work based upon a forty (40)-hour week or pro rata portion thereof, during which the Employee is absent for any authorized reason in accordance with established Company policy and procedure, is laid off
for a temporary period, is on a Company-approved leave of absence, or sick or disability leave, is on jury or military duty, or is not working due to a labor-management dispute. The clause shall be construed so as to resolve any ambiguities in favor
of crediting Employees with Hours of Service. 
  

 - 9 - 

 34. Independent Contractor 
 Any person, exercising and engaging in a business or occupation separate from and independent of the Company, who by mutual agreement with the Company is not to be otherwise treated as an Employee for payroll, compensation, employee
benefits, or similar purposes, and who is engaged or contracted to perform a certain job or services for the Company, but according to his/her own methods, and without being subject to the control or supervision of the Company, except as to
specification of the product or result of his/her work or services for which he/she is contracted. 
 35. KGS 401(k) Thrift Plan 
 The ONEOK, Inc. KGS 401(k) Thrift Plan, heretofore sponsored by the Company, which became effective on the effective date of the strategic alliance between ONEOK Inc., a
Delaware corporation and Western Resources, Inc. and the merger of said ONEOK, Inc. with and into WAI, Inc., an Oklahoma corporation. 
 36. Leased
Employee 
 A person who otherwise is not an Employee, but who provides services for the Company and such services are provided pursuant to an agreement
between the Company and any other person (leasing organization), and such person has performed such services for the Company (or for the Company and a related person determined in accordance with Code Section 414(n)(6)) on a substantially
full-time basis for at least one (1) year, and such services are performed under primary direction and control of the Company. Contributions or benefits provided a Leased Employee by the leasing organization which are attributable to services
performed for the Company shall be treated as provided by the Company. 
 A Leased Employee shall not be considered an employee of the Company if:
(i) such employee is covered by a money purchase pension plan providing: (1) a nonintegrated employer contribution rate of at least 10 percent of compensation, as defined in section 415(c)(3) of the Code, but including amounts contributed
pursuant to a salary reduction agreement which are excludable from the employee’s gross income under section 125, section 402(e)(3), section 402(h)(1)(B) or section 403(b) of the Code, (2) immediate participation, and (3) full and
immediate vesting; and (ii) leased employees do not constitute more than 20 percent of the Company’s non-highly compensated work force. 
 Leased
Employees shall be considered as employees of the Company for the purpose of determining if the Plan meets participation, coverage or other applicable requirements for qualification of the Plan under Code Section 401, but such Leased Employees
are not eligible to participate in the Plan, and are excluded from the definition of “Employee” in paragraph 24 of this Article I, above. 
 37.
Matching Contribution Percentage 
 The average of the ratios (calculated separately for each Employee in such group) of (i) the sum of the Company
Matching Contributions and Participant After-Tax Deposits paid under the Plan on behalf of each such Employee for the Plan Year, to (ii) the Employee’s Compensation (within 

  

 - 10 - 

 
the meaning of Code Section 414(s) for such Plan Year; with the Company having the election to take into account (in computing such percentage) elective
deferrals and qualified nonelective contributions (as defined in Code Section 401(m)(4)(C) under this Plan or any other plan of the Company, to the extent allowed by regulations. 
 38. Matching Contributions 
 The matching contribution made by the Company pursuant to Article VII of the Plan with
respect to the Reductions in Compensation and After-Tax Deposits of the Participant. 
 39. Non-Bargaining Unit Employee 
 Any Employee who is not represented by a collective bargaining unit, and is not a Bargaining Unit Employee. 
 40. Non-Bargaining Unit Participant 
 Any Participant who is a Non-Bargaining Unit Employee. 
 41. One-Year Break in Service 
 A twelve (12)-consecutive-month period
of time commencing on any anniversary date of original employment and ending twelve (12) consecutive months thereafter, during which the Employee has not completed more than five hundred (500) Hours of Service. 
 42. Participant 
 An Employee who has satisfied the eligibility
requirements of the Plan and has elected to participate in the Plan. 
 43. Participant Account 
 All cash and other assets held by the Trustee under the Plan in the accounts maintained under the Trust for the particular Participant. 
 44. Plan 
 This Thrift Plan for Employees of ONEOK, Inc. and
Subsidiaries, as amended and restated. 
 45. Plan Year 
 A twelve (12) month period commencing on January 1 of each year and ending on the subsequent December 31. 
 46. Pre-1987 Employee
Contribution Account 
 That part of a Participant’s Employee Contribution Account, which existed, and the balance of which remained unwithdrawn on
December 31, 1986. 
  

 - 11 - 

 47. Pre-1999 KGS 401(k) Thrift Plan Account 
 That part of a Participant’s (or former Employee’s) Transferred KGS 401(k) Thrift Plan Account which existed, and of which the balance remained unwithdrawn under the KGS 401(k) Thrift Plan on
December 31, 1998. 
 48. Pre-1999 ONEOK Thrift Plan Account 
 That part of a Participant’s (or former Employee’s) Account which existed, and of which the balance remained unwithdrawn under the Prior ONEOK, Inc. Thrift Plan on December 31, 1998. 
 49. Prior ONEOK, Inc. Thrift Plan 
 This Thrift Plan for Employees of
ONEOK, Inc. and Subsidiaries as in effect immediately prior to the merger thereof with the KGS 401(k) Thrift Plan, and amendment and restatement thereof effective on and after January 1, 1999. 
 50. Qualified Default Investment Alternative 
 An investment option
established and maintained under the Plan that shall be administered as more particularly described in Article IX, paragraph 1.B. of the Plan, and as so defined therein. 
 51. Qualified Matching Contributions 
 Matching Contributions, which are subject to the distribution and
nonforfeitability requirements under Code Section 401(k) when made. 
 52. Qualified Non-Elective Contributions 
 Contributions (other than Matching Contributions or Qualified Matching Contributions) made by the Company and allocated to Participants’ accounts that Participants
may not elect to receive in cash until distributed from the Plan, that are nonforfeitable when made; and that are distributable only in accordance with the distribution provisions that are applicable to Elective Deferrals and Qualified Matching
Contributions. 
 53. Qualifying Employer Stock 
 The
Common Stock of ONEOK, Inc., which is security readily tradable on an established securities market, within the meaning of Code Section 409 (l). 
 54. Reduction in Compensation 
 The reduction in Compensation payable to the Employee by the Company, which is elected voluntarily by the
Employee under paragraphs 1. and 2. of Article III, but not including any deemed elected additional deferral for Non-Bargaining Unit Participants made under paragraph 3. of Article III. 
  

 - 12 - 

 55. Retained Participant Account 
 The account of a Participant in this Plan which is or has been retained in the Trust of this Plan by the election of a former Participant in Part A of the ONEOK Inc. and Subsidiaries Employee Savings Plan. 

56. Roth 401(k) Elective Deferral 
 An elective deferral of a
Participant made pursuant to the provisions and requirements set forth in Article III, paragraph 3 of the Plan, and more specifically defined in Article III, paragraph 3.F. of the Plan. 
 57. Roth 401(k) Elective Deferral Account 
 A separate account maintained for each Participant who elects to make a
Roth 401(k) Elective Deferral which account shall be created, maintained and administered as provided in Article III, paragraph 3 of the Plan. 
 58.
Salaried Employee 
 An Employee whose basic rate of compensation or pay, as stated in the payroll records of the Company, is a fixed monthly or annual
salary and not an hourly rate of pay for services performed. 
 59. Section 16 Person 
 A person subject to Section 16(b) of the Securities Exchange Act of 1934, as amended, with respect to equity securities of the Company. 
 60. Separate Section 72(d) Employee Contribution Account 
 An
amount to be separately accounted for and maintained for each Participant to which all Participant After-Tax Deposits made after January 1, 1988, shall be allocated and credited, and to which all earnings, income, expense, gains, and losses
attributable thereto shall be separately charged and credited after that date pursuant to paragraphs 1. and 3. of Article X, and Code Section 72(d). 
 61. Subsidiary (and Subsidiaries) 
 A Subsidiary Corporation or a Controlled Affiliate Business Organization of ONEOK, Inc., as herein
defined. 
 62. Subsidiary Corporation 
 Any corporation
that is in one or more chains of includible corporations connected through stock ownership in which (i) ONEOK, Inc., an Oklahoma corporation, is the common parent corporation (ii) ONEOK, Inc. owns directly stock in at least one (1) of
the other includible corporations possessing not less than 100 percent of the total voting power of such corporation, 

  

 - 13 - 

 
or having a value equal to 100 percent of the total value of the stock of such corporation (“applicable ownership level”), and (iii) stock at
such applicable ownership level in each of the includible corporations (except said ONEOK, Inc.) is owned directly by one (1) or more of the other includible corporations. 
 63. Transferred 401(k) Account 
 The account of a Participant in this Plan which is transferred to and made a part of
the Trust of this Plan incident to the merger and consolidation of such Trust with the Trust of Part B of the ONEOK, Inc. and Subsidiaries Employee Savings Plan, as provided in paragraph 2. of Article V. 
 64. Transferred KGS 401(k) Thrift Plan Account 
 The account of a
Participant in this Plan, or of a former Participant transferred to and made a part of the Trust of this Plan incident to the merger of such Trust with the Trust of the KGS 401(k) Thrift Plan. 
 65. Trust 
 The Trust established for the receiving, holding,
investing, and disposing of the Participant deposits, Company contributions, and any earnings thereon under this Plan, and any predecessor plan. 
 66.
Trustee 
 The Trustee under the Plan hereinafter named in paragraph 2. of Article XV or any successor to said Trustee. 
 67. USERRA 
 The Uniformed Service Employment and Reemployment Rights
Act, 38 United States Code, §§ 4301, et seq. 
 68. Year of Service 
 A twelve (12) month period, beginning on the date the Employee Commenced employment with the Employer and ending twelve (12) months thereafter, or any subsequent twelve (12) month period beginning on
any anniversary of the employment commencement date and ending twelve (12) months thereafter, during which an Employee has completed at least one thousand (1,000) Hours of Service. Provided that, upon employment by the Company, for
purposes of determining an Employee’s eligibility to participate in the Plan, and subject to the foregoing definition of a Year of Service, a Year of Service with any member of a controlled group (as described in Section 414(b) of the
Internal Revenue Code of 1986, or similar provisions in succeeding enactments) of which the Company is also a member shall be deemed to be a Year of Service with the Company, whether or not such other member of the controlled group shall have
adopted this or any other Plan. 
  

 - 14 - 

 PART B. 
 AMENDMENT OF THE PLAN FOR EGTRRA 
 PREAMBLE 
 1. Adoption and effective date of amendment. The amendments of the Plan in this Part B of Article I are adopted to reflect certain provisions of the Economic
Growth and Tax Relief Reconciliation Act of 2001 (“EGTRRA”). Such amendments are intended as good faith compliance with the requirements of EGTRRA and are to be construed in accordance with EGTRRA and guidance issued thereunder. Except as
otherwise provided, herein the amendments in this Part B of Article I shall be effective as of the first day of the first plan year beginning after December 31, 2001. 
 2. Supersession of inconsistent provisions. The amendments in this Part B of Article I shall supersede the provisions of the Plan to the extent those provisions are inconsistent with the provisions of such
amendments. 
 PARAGRAPH 
 1. Limitations on
Contributions 
 A. Effective date. This paragraph 2 shall be effective for limitation years beginning after December 31, 2001. 
 B. Maximum annual addition. Except to the extent permitted under Paragraph 11 of this Part B, of Article I, if applicable, the annual addition that may be
contributed or allocated to a Participant’s account under the Plan for any limitation year shall not exceed the lesser of: 
  

	 	(a)	$40,000, as adjusted for increases in the cost-of-living under Code Section 415(d) or 

  

	 	(b)	100 percent of the Participant’s compensation, within the meaning of Code Section 415(c)(3), for the limitation year. 

 The compensation limit referred to in (b) shall not apply to any contribution for medical benefits after separation from service (within the meaning of Code
Section 401(h) or Code Section 419A(f)(2) which is otherwise treated as an annual addition. 
 2. Increase in Compensation Limit 

The annual compensation of each Participant taken into account in determining allocations for any Plan Year beginning after December 31, 2001, shall not exceed
$200,000, as adjusted for cost-of-living increases in accordance with Code Section 401(a)(17)(B). Annual compensation means compensation during the Plan Year or such other consecutive 12-month period over which compensation is otherwise
determined under the Plan (the determination period). The cost-of-living adjustment in effect for a calendar year applies to annual compensation for the determination period that begins with or within such calendar year. 
  

 - 15 - 

 3. Modification of Top-Heavy Rules 
 A. Effective date. This Paragraph 3, Part B, of Article I of the Plan shall apply for purposes of determining whether the Plan is a top-heavy plan under Code Section 416(g) for Plan Years beginning after
December 31, 2001, and whether the Plan satisfies the minimum benefits requirements of Code Section 416(c) for such years. This paragraph amends Paragraphs 1 through 6 of Article XXI of the Plan. 
 B. Determination of top-heavy status. 
  

	 	1.	Key employee. The term “key employee” means any employee or former employee (including any deceased employee) who at any time during the Plan Year that includes the
determination date was an officer of the employer having annual compensation greater than $130,000 (as adjusted under Code Section 416(i)(1) for Plan Years beginning after December 31, 2002), a 5-percent owner of the employer, or a
1-percent owner of the employer having annual compensation of more than $150,000. For this purpose, annual compensation means compensation within the meaning of Code Section 415(c)(3). The determination of who is a key employee will be made in
accordance with Code Section 416(i)(1) and the applicable regulations and other guidance of general applicability issued thereunder. 

  

	 	2.	Determination of present values and amounts. This Paragraph 3 shall apply for purposes of determining the present values of accrued benefits and the amounts of account
balances of employees as of the determination date. 

  

	 	3.	Distributions during year ending on the determination date. The present values of accrued benefits and the amounts of account balances of a Participant as of the
determination date shall be increased by the distributions made with respect to the Participant under the Plan and any plan aggregated with the Plan under Code Section 416(g)(2) during the 1-year period ending on the determination date. The
preceding sentence shall also apply to distributions under a terminated plan which, had it not been terminated, would have been aggregated with the Plan under Code Section 416(g)(2)(A)(i). In the case of a distribution made for a reason other
than separation from service, death, or disability, this provision shall be applied by substituting “5-year period” for “1-year period.” 

  

	 	4.	Employees not performing services during year ending on the determination date. The accrued benefits and accounts of any individual who has not performed services for the
employer during the 1-year period ending on the determination date shall not be taken into account. 

 C. Minimum benefits. 

 

	 	1.	 Matching contributions. Company matching contributions shall be taken into account for purposes of satisfying the minimum contribution requirements of Code
Section 416(c)(2) and the Plan. The preceding sentence shall apply with respect to matching contributions under the Plan or, if the Plan provides that the 

  

 - 16 - 

 
minimum contribution requirement shall be met in another plan, such other plan. Company matching contributions that are used to satisfy the minimum
contribution requirements shall be treated as matching contributions for purposes of the actual contribution percentage test and other requirements of Code Section 401(m). 
 4. Vesting of Employer Matching Contributions 
 A. Applicability. This Paragraph 4, Part B, Article I of the
Plan shall apply to Participants with accrued benefits derived from Company matching contributions who complete an hour of service under the Plan in a Plan Year beginning after December 31, 2001, and to all other participants with accrued
benefits derived from employer matching contributions. 
 B. Vesting schedule. A Participant’s accrued benefit derived from Company matching
contributions shall be fully and immediately vested. 
 5. Direct Rollovers of Plan Distributions 
 A. Effective date. Subject to subparagraph E, below, this Paragraph 5, Part B, Article I of the Plan shall apply to distributions made after December 31,
2001. 
 B. Modification of definition of eligible retirement plan. For purposes of the direct rollover provisions in Paragraph 5 of Article V of the
Plan, an eligible retirement plan shall also mean an annuity contract described in Code Section 403(b) and an eligible plan under Code Section 457(b) which is maintained by a state, political subdivision of a state, or any agency or
instrumentality of a state or political subdivision of a state and which agrees to separately account for amounts transferred into such plan from this plan. The definition of eligible retirement plan shall also apply in the case of a distribution to
a surviving spouse, or to a spouse or former spouse who is the alternate payee under a qualified domestic relation order, as defined in Code Section 414(p). 
 C. Modification of definition of eligible rollover distribution to exclude hardship distributions. For purposes of the direct rollover provisions in Paragraph 5 of Article V of the Plan, any amount that is distributed on account of
hardship shall not be an eligible rollover distribution and the distributee may not elect to have any portion of such a distribution paid directly to an eligible retirement plan. 
 D. Modification of definition of eligible rollover distribution to include after-tax employee contributions. For purposes of the direct rollover provisions in Paragraph 5 of Article V of the Plan, a portion of
a distribution shall not fail to be an eligible rollover distribution merely because the portion consists of after-tax Participant contributions which are not includible in gross income. However, such portion may be transferred only to an individual
retirement account or annuity described in Code Section 408(a) or (b), or to a qualified defined contribution plan described in Code Section 401(a) or 403(a) that agrees to separately account for amounts so transferred, including
separately accounting for the portion of such distribution which is includible in gross income and the portion of such distribution which is not so includible. 
  

 - 17 - 

 E. Rollover of Certain Mandatory Distributions. If an immediate distribution of an amount not exceeding $5,000 is
made pursuant to the provisions of the Plan and Code Section 411(a)(ii), and if such distribution is in excess of $1,000, and the distributee does not make an election to receive the distribution directly, the distribution shall be made through
and by a direct transfer to an individual retirement plan of a designated trustee or issuer, and the Company shall notify the distributee in writing (either separately or part of the notice under Code Section 402(f)) that the distribution may
be transferred to another individual retirement plan. This subparagraph shall be effective at the time prescribed in Section 657(a) of the Economic Growth and Tax Relief Reconciliation Act of 2001. 
 6. Rollovers from Other Plans 
 The Plan will accept participant
rollover contributions and/or direct rollovers of distributions made after December 31, 2001, from the types of plans specified below, beginning on January 1, 2002. 
 A. Direct Rollovers. The Plan will accept a direct rollover of an eligible rollover distribution from: 
  

	 	1.	A qualified plan described in Code Section 401(a) or 403(a), including after-tax employee contributions. 

  

	 	2.	An annuity contract described in Code Section 403(b), excluding after-tax employee contributions. 

  

	 	3.	An eligible plan under Code Section 457(b) which is maintained by a state, political subdivision of a state, or any agency or instrumentality of a state or political
subdivision of a state. 

 B. Participant Rollover Contributions from Other Plans. The Plan will accept a participant contribution of an
eligible rollover distribution from: 
  

	 	1.	A qualified plan described in Code Section 401(a) or 403(a). 

  

	 	2.	An annuity contract described in Code Section 403(b). 

  

	 	3.	An eligible plan under Code Section 457(b) which is maintained by a state, political subdivision of a state, or any agency or instrumentality of a state or political
subdivision of a state. 

  

 - 18 - 

 C. Participant Rollover Contributions from IRAs. The plan will accept a participant rollover contribution of the
portion of a distribution from an individual retirement account or annuity described in Code Section 408(a) or 408(b) that is eligible to be rolled over and would otherwise be includible in gross income. 
 7. Rollovers Disregarded in Involuntary Cash-Outs 
 A.
Applicability and effective date. This Paragraph 7, Part B, Article I of the Plan shall apply and shall be effective January 1, 2002. 
 B.
Rollovers disregarded in determining value of account balance for involuntary distributions. For purposes of Paragraph 6 of Article XI, Paragraph 10 of Article XXII, and Paragraphs 4 and 8, Part F, Article XXXIII of the Plan, the value of a
Participant’s nonforfeitable account balance shall be determined without regard to that portion of the account balance that is attributable to rollover contributions (and earnings allocable thereto) within the meaning of Code Sections 402(c),
403(a)(4), 403(b)(8), 408(d)(3)(A)(ii), and 457(e)(16). If the value of the Participant’s nonforfeitable account balance as so determined is $5,000 or less, the Plan shall immediately distribute the Participant’s entire nonforfeitable
account balance. 
 8. Repeal of Multiple Use Test 
 The
multiple use test described in Treasury Regulation section 1.401(m)-2 and Paragraph 6 of Article VIII of the Plan shall not apply for plan years beginning after December 31, 2001. 
 9. Elective Deferrals – Contribution Limitation 
 No Participant shall be permitted to have elective deferrals
made under this Plan, or any other qualified plan maintained by the Company during any taxable year, in excess of the dollar limitation contained in Code Section 402(g) in effect for such taxable year, except to the extent permitted under
Paragraph 11 of this Part B of Article I. 
 10. Modification of Top-Heavy Rules 
 The top-heavy requirements of Code Section 416 of Article XXI of the Plan shall not apply in any year beginning after December 31, 2001, in which the Plan consists solely of a cash or deferred arrangement
which meets the requirements of Code Section 401(k)(12) and matching contributions with respect to which the requirements of Code Section 401(m)(11) are met. 
 11. Catch-Up Contributions 
 A. All Participants who are eligible to make elective deferrals under this Plan and who
have attained age 50 before the close of the Plan Year shall be eligible to make catch-up contributions in accordance with, and subject to the limitations of Code Section 414(v). Such catch-up contributions shall not be taken into account for
purposes of the provisions of the Plan implementing the required limitations of Code Sections 402(g) and 415. The Plan shall not be treated as failing to satisfy the provisions of the Plan implementing the requirements of Code
Section 401(k)(3), 401(k)(11), 401(k)(12), 410(b), or 416, as applicable, by reason of the making of such catch-up contributions. This Paragraph 11, Part B, Article I shall apply to contributions after December 31, 2001. 
  

 - 19 - 

 12. Suspension Period Following Hardship Distribution 
 A Participant who receives a distribution of elective deferrals after December 31, 2001, on account of hardship shall be prohibited from making elective deferrals
and employee contributions under this and all other plans of the Company for 6 months after receipt of the distribution. A Participant who receives a distribution of elective deferrals in calendar year 2001 on account of hardship shall be prohibited
from making elective deferrals and Participant contributions under this and all other plans of the Company for 6 months after receipt of the distribution or until January 1, 2002, if later. 
 13. Distribution Upon Severance From Employment 
 A. Effective
date. This Paragraph 13, Part B, Article I of the Plan shall apply for distributions and severances from employment occurring after December 31, 2001, regardless of when the severance from employment occurred. 
 B. New distributable event. A Participant’s elective deferrals, qualified nonelective contributions, qualified matching contributions, and earnings
attributable to these contributions shall be distributed on account of the Participant’s severance from employment. However, such a distribution shall be subject to the other provisions of the Plan regarding distributions, other than provisions
that require a separation from service before such amounts may be distributed. 
 14. ESOP Participant Election To Reinvest Dividends 
 A. Effective date. This Paragraph 14, Part B, Article I of the Plan shall apply to any dividends on ONEOK, Inc. Common Stock which are paid in cash by the Company
after December 31, 2001. 
 B. Participant reinvestment election. Any ESOP Dividend on ONEOK, Inc. Common Stock which in accordance with the Plan
provisions (1) is payable in cash to the Participants in the Plan or their beneficiaries, or (2) is payable to the Plan and is to be distributed in cash to Participants in the Plan or their beneficiaries not later than 90 days after the
close of the Plan Year in which paid, may at the election of such Participants or their beneficiaries, be (A) paid as provided in clause (1) or (2) of this subparagraph B, above, or (B) paid to the Plan and reinvested in ONEOK,
Inc. Common Stock. In this regard, a Participant may elect in writing to either (i) receive and take payment in cash of one hundred percent (100%) of the ESOP Dividends for his/her Participant Account, (ii) receive and take payment in
cash of fifty percent (50%) of the ESOP Dividends for his/her Participant Account, and have the other fifty percent (50%) of such ESOP Dividends paid to the Plan and reinvested in ONEOK, Inc. Common Stock, or (iii) elect to receive
and take no payment in cash of the ESOP Dividends for his/her Participant Account and have one hundred percent (100%) of such ESOP Dividends paid to the Plan and reinvested in ONEOK, Inc. Common Stock A Participant who for any reason fails to
make and election with respect to the payment or reinvestment of ESOP Dividends hereunder shall have all of the ESOP Dividends for his/her Participant Account paid to the Plan reinvested in ONEOK, Inc. Common Stock. Reinvestment of ESOP Dividends
paid to the Plan shall be made in accordance with all 

  

 - 20 - 

 
applicable provisions of the Plan providing for the investment of Plan assets in Participant Accounts and for ONEOK, Inc. Common Stock to be a permissible
investment thereof under the Plan. 
 The Committee shall provide for each Participant to make an election in writing to have dividends on ONEOK, Inc. Common
Stock payable the Participant or to the Plan reinvested in such Common Stock, at the time and in the manner provided in rules, forms and procedures prescribed by the Committee. 
 C. ESOP dividend distribution/additional deferral contribution discontinued. The right of a Participant to make an elective deferral of his/her compensation in an amount equal to the ESOP Dividend Distribution
paid in cash to such Participant with respect to ONEOK, Inc. Common Stock in such Participant’s Account pursuant to Paragraph 3 of Article III of the Plan and the making of ESOP Dividend Distributions in the manner described in Paragraph 2B.,C.
and D. of Article X of the Plan are discontinued and terminated as to dividends paid after December 31, 2001. 
  

 - 21 - 

 PART C. 
 MODEL PLAN AMENDMENT 
 MINIMUM DISTRIBUTION REQUIREMENTS 
 Section 1. General Rules 
 1. Effective Date 
 Unless an earlier effective date is specified in the adoption agreement, the provisions of this article will apply for purposes of determining required minimum
distributions for calendar years beginning with the 2003 calendar year. 
 2. Coordination with Minimum Distribution Requirements Previously in Effect

 If the adoption agreement specifies an effective date of this article that is earlier than calendar years beginning with the 2003 calendar year,
required minimum distributions for 2002 under this article will be determined as follows. If the total amount of 2002 required minimum distributions under the plan made to the distributee prior to the effective date of this article equals or exceeds
the required minimum distributions determined under this article, then no additional distributions will be required to be made for 2002 on or after such date to the distributee. If the total amount of 2002 required minimum distributions under the
plan made to the distributee prior to the effective date of this article is less than the amount determined under this article, then required minimum distributions for 2002 on and after such date will be determined so that the total amount of
required minimum distributions for 2002 made to the distributee will be the amount determined under this article. 
 3. Precedence 
 The requirements of this article will take precedence over any inconsistent provisions of the plan. 
 4. Requirements of Treasury Regulations Incorporated 
 All distributions required under this article will be
determined and made in accordance with the Treasury regulations under section 401(a)(9) of the Internal Revenue Code. 
 5. TEFRA Section 242(b)(2)
Elections 
 Notwithstanding the other provisions of this article, distributions may be made under a designation made before January 1, 1984, in
accordance with section 242(b)(2) of the Tax Equity and Fiscal Responsibility Act (TEFRA) and the provisions of the plan that relate to section 242(b)(2) of TEFRA. 
  

 - 22 - 

 Section 2. Time and Manner of Distribution. 
 1. Required Beginning Date 
 The participant’s entire interest will be distributed, or begin to be distributed,
to the participant no later than the participant’s required beginning date. 
 2. Death of Participant Before Distributions Begin 
 If the participant dies before distributions begin, the participant’s entire interest will be distributed, or begin to be distributed, no later than as follows:

  

	 	 (a)
	 If the participant’s surviving spouse is the participant’s sole designated beneficiary, then, except as
provided in the adoption agreement, distributions to the surviving spouse will begin by December 31 of the calendar year immediately following the calendar year in which the participant died, or by December 31 of the calendar year in which
the participant would have attained age 70 1/2, if later. 

  

	 	(b)	If the participant’s surviving spouse is not the participant’s sole designated beneficiary, then, except as provided in the adoption agreement, distributions to the
designated beneficiary will begin by December 31 of the calendar year immediately following the calendar year in which the participant died. 

  

	 	(c)	If there is no designated beneficiary as of September 30 of the year following the year of the participant’s death, the participant’s entire interest will be
distributed by December 31 of the calendar year containing the fifth anniversary of the participant’s death. 

  

	 	(d)	If the participant’s surviving spouse is the participant’s sole designated beneficiary and the surviving spouse dies after the participant but before distributions to the
surviving spouse begin, this section 2.2, other than section 2.2(a), will apply as if the surviving spouse were the participant. 

 For
purposes of this section 2.2 and section 4, unless section 2.2(d) applies, distributions are considered to begin on the participant’s required beginning date. If section 2.2(d) applies, distributions are considered to begin on the date
distributions are required to begin to the surviving spouse under section 2.2(a). If distributions under an annuity purchased from an insurance company irrevocably commence to the participant before the participant’s required beginning date (or
to the participant’s surviving spouse before the date distributions are required to begin to the surviving spouse under section 2.2(a)), the date distributions are considered to begin is the date distributions actually commence. 
 3. Forms of Distribution 
 Unless the participant’s interest is
distributed in the form of an annuity purchased from an insurance company or in a single sum on or before the required beginning date, as of the first distribution calendar year distributions will be made in accordance with sections 3 and 4 of this
article. If the participant’s interest is distributed in the form of an annuity purchased from an insurance company, distributions thereunder will be made in accordance with the requirements of section 401(a)(9) of the Code and the Treasury
regulations. 
  

 - 23 - 

 Section 3. Section 3. Required Minimum Distributions During Participant’s Lifetime. 
 1. Amount of Required Minimum Distribution For Each Distribution Calendar Year 
 During the participant’s lifetime, the minimum amount that will be distributed for each distribution calendar year is the lesser of: 
  

	 	(a)	the quotient obtained by dividing the participant’s account balance by the distribution period in the Uniform Lifetime Table set forth in section 1.401(a)(9)-9 of the Treasury
regulations, using the participant’s age as of the participant’s birthday in the distribution calendar year; or 

  

	 	(b)	if the participant’s sole designated beneficiary for the distribution calendar year is the participant’s spouse, the quotient obtained by dividing the participant’s
account balance by the number in the Joint and Last Survivor Table set forth in section 1.401(a)(9)-9 of the Treasury regulations, using the participant’s and spouse’s attained ages as of the participant’s and spouse’s birthdays
in the distribution calendar year. 

 2. Lifetime Required Minimum Distributions Continue Through Year of Participant’s Death

 Required minimum distributions will be determined under this section 3 beginning with the first distribution calendar year and up to and including the
distribution calendar year that includes the participant’s date of death. 
 Section 4. Required Minimum Distributions After Participant’s
Death 
 1. Death On or After Date Distributions Begin 
  

	 	(a)	Participant Survived by Designated Beneficiary. If the participant dies on or after the date distributions begin and there is a designated beneficiary, the minimum amount that will
be distributed for each distribution calendar year after the year of the participant’s death is the quotient obtained by dividing the participant’s account balance by the longer of the remaining life expectancy of the participant or the
remaining life expectancy of the participant’s designated beneficiary, determined as follows: 

  

	 	(1)	The participant’s remaining life expectancy is calculated using the age of the participant in the year of death, reduced by one for each subsequent year.

  

	 	(2)	 If the participant’s surviving spouse is the participant’s sole designated beneficiary, the remaining life expectancy of the surviving spouse is
calculated for each distribution calendar year after the year of the 

  

 - 24 - 

	 	 
participant’s death using the surviving spouse’s age as of the spouse’s birthday in that year. For distribution calendar years after the year
of the surviving spouse’s death, the remaining life expectancy of the surviving spouse is calculated using the age of the surviving spouse as of the spouse’s birthday in the calendar year of the spouse’s death, reduced by one for each
subsequent calendar year. 

  

	 	(3)	If the participant’s surviving spouse is not the participant’s sole designated beneficiary, the designated beneficiary’s remaining life expectancy is calculated using
the age of the beneficiary in the year following the year of the participant’s death, reduced by one for each subsequent year. 

  

	 	(b)	No Designated Beneficiary. If the participant dies on or after the date distributions begin and there is no designated beneficiary as of September 30 of the year after the year
of the participant’s death, the minimum amount that will be distributed for each distribution calendar year after the year of the participant’s death is the quotient obtained by dividing the participant’s account balance by the
participant’s remaining life expectancy calculated using the age of the participant in the year of death, reduced by one for each subsequent year. 

 2. Death Before Date Distributions Begin 
  

	 	(a)	Participant Survived by Designated Beneficiary. Except as provided in the adoption agreement, if the participant dies before the date distributions begin and there is a designated
beneficiary, the minimum amount that will be distributed for each distribution calendar year after the year of the participant’s death is the quotient obtained by dividing the participant’s account balance by the remaining life expectancy
of the participant’s designated beneficiary, determined as provided in section 4.1 

  

	 	(b)	No Designated Beneficiary. If the participant dies before the date distributions begin and there is no designated beneficiary as of September 30 of the year following the year
of the participant’s death, distribution of the participant’s entire interest will be completed by December 31 of the calendar year containing the fifth anniversary of the participant’s death. 

  

	 	(c)	Death of Surviving Spouse Before Distributions to Surviving Spouse Are Required to Begin. If the participant dies before the date distributions begin, the participant’s
surviving spouse is the participant’s sole designated beneficiary, and the surviving spouse dies before distributions are required to begin to the surviving spouse under section 2.2(a), this section 4.2 will apply as if the surviving spouse
were the participant. 

  

 - 25 - 

 Section 5. Definitions 
 1. Designated beneficiary 
 The individual who is designated as the beneficiary under Article XIII, sections 1 through
3 of the plan and is the designated beneficiary under section 401(a)(9) of the Internal Revenue Code and section 1.401(a)(9)-1, Q&A-4, of the Treasury regulations. 
 2. Distribution calendar year 
 A calendar year for which a minimum distribution is required. For distributions
beginning before the participant’s death, the first distribution calendar year is the calendar year immediately preceding the calendar year which contains the participant’s required beginning date. For distributions beginning after the
participant’s death, the first distribution calendar year is the calendar year in which distributions are required to begin under section 2.2. The required minimum distribution for the participant’s first distribution calendar year will be
made on or before the participant’s required beginning date. The required minimum distribution for other distribution calendar years, including the required minimum distribution for the distribution calendar year in which the participant’s
required beginning date occurs, will be made on or before December 31 of that distribution calendar year. 
 3. Life expectancy 
 Life expectancy as computed by use of the Single Life Table in section 1.401(a)(9)-9 of the Treasury regulations. 
 4. Participant’s account balance 
 The account balance as of the
last valuation date in the calendar year immediately preceding the distribution calendar year (valuation calendar year) increased by the amount of any contributions made and allocated or forfeitures allocated to the account balance as of dates in
the valuation calendar year after the valuation date and decreased by distributions made in the valuation calendar year after the valuation date. The account balance for the valuation calendar year includes any amounts rolled over or transferred to
the plan either in the valuation calendar year or in the distribution calendar year if distributed or transferred in the valuation calendar year. 
 5.
Required beginning date 
 The date specified in Article XI, paragraph 10 of the plan. 
  

 - 26 - 

 ARTICLE II. 
 ELIGIBILITY AND PARTICIPATION 
 PARAGRAPH 
 1. Eligibility 
 Except as hereinafter otherwise provided, participation in the Plan shall be open to any Employee
upon and after his/her commencement of employment with the Company; provided, that Company Matching Contributions shall be made only upon completion of one (1) Year of Service as provided in Article VII of the Plan. An Employee in active
employment at the effective date of any amendment of the Plan who would have been eligible to participate at an earlier date under the previous Plan provisions governing eligibility and time of service, shall become eligible at such earlier date.
Any Employee who prior to January 1, 1999, was eligible to participate in, or who was a participant in the Prior ONEOK, Inc. Thrift Plan, or the KGS 401(k) Thrift Plan shall be eligible to participate in this Plan on and after January 1,
1999. Any Employee eligible to participate in a qualified pension or profit-sharing plan of the Company from which a rollover or trust to trust transfer is approved, or with which a merger and consolidation is approved, shall be eligible to
participate in this Plan; provided, that eligibility for participation of Salaried Employees of ONEOK Drilling Company shall be deemed to have commenced on January 1, 1985. The Plan shall not have a maximum age condition or limitation on
participation, shall not exclude from participation (on the basis of age) any Employees who have attained any specified age; and allocations to a Participant’s Account under the Plan shall not be ceased, and the rate at which amounts are
allocated to a Participant’s Account shall not be reduced because of the attainment of any age; provided, that such requirements relating to no maximum age for participation and accrual of benefits shall be coordinated to the extent provided in
Treasury Regulations with the requirements of Code Sections 404, 410, and 415, and the Code provisions precluding discrimination in favor of Highly Compensated Employees. 
 2. Commencement of Participation 
 An Employee who is eligible on or before the Consolidated Plan Effective Date of
the Plan may commence his/her initial Participation therein as of that date. Any Employee who prior to January 1, 1999, was eligible to participate in, or who was a participant in the Prior ONEOK, Inc. Thrift Plan or the KGS 401(k) Thrift Plan
shall be eligible to participate in this Plan on and after January 1, 1999. Any other eligible Employee may commence initial participation as of the first day of the calendar month next following the month in which he/she becomes eligible;
provided, however, that no Employee who is on authorized leave of absence on the date he/she becomes eligible may commence to participate in the Plan until the first day of the calendar month following his/her return to active service; and provided,
further, that such Employee may in any event participate in the Plan not later than the earlier of the first day of the Plan Year after such Employee has met the requirements for eligibility under this Plan, or six (6) months after the day such
requirements are met. Any eligible Employee who does not commence to participate in the Plan on the earliest date when he/she is eligible to do so may thereafter commence participation as of the first day of the calendar month following the month in
which he/she elects to participate and makes application to do so to the Company. Commencement of participation in the Plan by an eligible Employee shall be accomplished by his/her election to make deposits or a Reduction in Compensation, as
hereinafter provided. 
  

 - 27 - 

 3. Participation Voluntary 
 Participation in the Plan by eligible Employees shall be voluntary. A Participant may become temporarily ineligible to participate in the event of termination or suspension of his/her participation pursuant to the terms of the Plan.

 4. Confirmation of Participation 
 Each Employee at the
time of becoming a Participant in the Plan shall be given a copy of the Plan as effective at that time, and as a condition of participation he/she shall sign an instrument in such form as prescribed by the Committee evidencing the fact that he/she
accepts and agrees to all the provisions of the Plan, and the Committee may require the consent of the spouse of the Participant if the Participant is married and the primary beneficiary designated is not the spouse of the Participant. 

5. Duration of Participation 
 After an Employee has satisfied the
eligibility requirements and has elected to participate in the Plan, participation in the Plan shall continue until the employer-employee relationship is terminated between the Company and the Participant, except as provided in the case of voluntary
or involuntary Participant suspension or voluntary or involuntary Plan termination. 
 6. Reentry of Participant 
 If a former Participant whose employment has terminated shall be rehired as an Employee, he/she shall be entitled to reenter the Plan as a Participant on the first day of
the month next following such reemployment. 
 7. Breaks in Service 
 If an Employee who has not satisfied the eligibility requirements of the Plan and whose employee relationship with the Company has been terminated, is subsequently reemployed, he/she shall again be eligible to
participate in the Plan, and to commence to participate in accordance with paragraphs 1. and 2. of this Article II. Notwithstanding the foregoing eligibility provisions, or any other provisions of this Plan, an Employee’s prior Years of Service
shall always be considered in determining the satisfaction of the eligibility requirements if such termination period is not a period of consecutive One (1)-year Breaks in Service which equals or exceeds the greater of five (5), or the aggregate
number of Years of Service before such termination period. If any Years of Service are not required to be taken into account by reason of a period of Breaks in Service to which the foregoing provisions of this paragraph 7. apply, such Years of
Service shall not be taken into account in applying such provisions to a subsequent period of Breaks in Service. 
  

 - 28 - 

 8. Maternity and Paternity Absences 
 Any period of absence from work, not exceeding the hours described in subparagraphs A. and B., below, by an Employee for any period by reason of the pregnancy of the Employee; by reason of the birth of a child of the
Employee; by reason of the placement of a child with the Employee in connection with the adoption of such child by the Employee; or for the purpose of caring for such child for a period beginning immediately following such birth or placement shall
be treated as Hours of Service, solely for purposes of determining whether a One (1)-year Break in Service has occurred with respect to Years of Service for purpose of eligibility for participation in this Plan. The Hours of Service described in
this paragraph 8. are: 
 A. the Hours of Service which otherwise would normally have been credited to such Employee but for such absence, or 
 B. in any case where the Committee is unable to determine the hours described in subparagraph A., above, eight (8) hours per normal workday of service, except that
the total number of hours treated as Hours of Service under this paragraph 8. shall not exceed five hundred one (501) hours. 
 Provided, that no credit
will be given pursuant to this paragraph 8. unless the individual furnishes to the Committee such timely information as it may reasonably require to establish that the absence from work is for reasons referred to hereinabove, and the number of days
for which there was such absence. 
 The hours described in this paragraph 8. shall be treated as Hours of Service only in the year in which the absence from
work begins, if an Employee would be prevented from incurring a One (1) year Break in Service in such year solely because the period of absence is treated as Hours of Service as hereinabove provided; or in any case, in the immediately following
year. For purposes of application of the foregoing rules in this paragraph 8. the term “year” means the twelve (12) month period beginning on the first day of employment with the Company and each anniversary thereof. 
 9. Eligibility in Case of Merger, Consolidation or Acquisition 
 The
Board of Directors, or the Committee at the Board of Directors’ direction, shall determine on a uniform and nondiscriminatory basis, in accordance with any agreement to which the Company shall be a party, or by which it shall be bound, and in a
manner not inconsistent with law, which persons, if any, who become employees of the Company as a result of a merger or consolidation or the acquisition of a substantial portion of the assets or stock of a corporation shall be eligible for
participation in this Plan. 
 Where in connection with a merger, consolidation, or acquisition of assets, property or stock by the Company from or of
another corporation or entity, individuals who were employees of such other corporation or entity become Employees of the Company, the Board of Directors, or the Committee at the Board of Directors’ direction, may determine on a uniform and
nondiscriminatory basis, in accordance with any agreement to which the Company shall be a party, or by which it shall be bound, and in a manner not inconsistent with law, whether employment with such other corporation or entity preceding such
transaction or the Company’s 

  

 - 29 - 

 
acquisition of stock of, or property from it, shall be deemed to be employment for eligibility purposes under this Plan; provided, that the determination of
deemed service for eligibility or similar determinations in any particular instance of the acquisition of stock or assets by the Company pursuant to the foregoing provisions of this paragraph 9., shall not be effective or control with respect to the
employees of any other corporation in any prior or subsequent acquisition of stock or assets of another corporation by the Company. 
 10. Participant
Military Service 
 Notwithstanding any provisions of the Plan to the contrary, contributions, benefits and service credit with respect to qualified
military service of an employee will be provided in accordance with the special rules relating to veterans reemployment rights under USERRA in Code Section 414(u). 
  

 - 30 - 

 ARTICLE III. 
 CONTRIBUTIONS FOR PARTICIPANT 401(k) SALARY REDUCTIONS 
 PARAGRAPH 
 1. Company 401(k) Contributions 
 The Company shall contribute to the
Trust for each Plan Year, that portion of the Net Earnings of the Company for that year equal to the amount of the Reduction in Compensation elected by each Participant, and ESOP Dividend Distribution/Additional Deferral Contribution elected and
agreed to and deemed elected by each Participant pursuant to paragraphs 2. and 3. of this Article III, to the extent provided therein. Such contributions shall be the Company’s 401(k) Contribution for the Participant 
 2. Cash or Deferral Election 
 A. Non-Bargaining Unit
Participants 
  

	 	1.	In Plan Years prior to January 1, 2005, each Employee who is a Non-Bargaining Unit Participant in this Plan may elect a Reduction in Compensation in an amount not in excess of
the lesser of fourteen percent (14%) of his/her Compensation or the limitation on exclusion of elective deferrals for his/her taxable year, provided in Code Section 402(g), subject to applicable cost-of-living adjustment thereunder, or as
provided in any successor provision of the federal tax. 

 In Plan Years beginning on or after January 1, 2005, each
Employee who is a Non-Bargaining Unit Participant in this Plan may elect a Reduction in Compensation in an amount not in excess of twenty-four percent (24%) of his/her Compensation or the limitation on exclusion of elective deferrals for
his/her taxable year, provided in Code Section 402(g), subject to applicable cost-of-living adjustment thereunder, or as provided in any successor provision of the federal tax law. 
 The amount of such Reduction in Compensation shall be deferred and become the Company’s 401(k) Contribution for such Participant; provided, that to
the extent an elected Reduction in Compensation of a Highly Compensated Employee causes the limitations of paragraph 3. or 7. of Article VIII to be exceeded, the election shall not become effective for the excess amount and it shall be paid to the
Highly Compensated Employee in cash. If necessary to meet the limitations of paragraphs 2., 3., or 7. of Article VIII, a Non-Bargaining Unit Participant’s Reduction in Compensation, and the Company’s 401(k) Contribution shall be reduced in
the manner determined by the Committee, and may include, without limitation, reducing the percentage of highest elected Reductions in Compensation of Non-Bargaining Unit Participants then in effect until such limitations are not exceeded. In case
the amount and percentage be so reduced, such reduction shall be to the next lower full percentile below the permissible limitation percentage, and shall remain in effect until the next succeeding Designation Date, subject to any further adjustment
necessary to meet such limitations under paragraphs 2., 3., or 7. of Article VIII. 
  

 - 31 - 

 Notwithstanding any other terms or provisions of the Plan, for Plan Years commencing prior to
January 1, 2005, the total contributions which a Non-Bargaining Unit Participant may make by Reduction in Compensation and After-Tax Deposits shall not exceed eighteen percent (18%) of his/her Compensation. The limitation provided in this
paragraph shall not apply in Plan Years beginning on and after January 1, 2005. 
  

	 	2.	Each Participant in this Plan may elect a Reduction in Compensation by signing and filing with the Committee a written election and agreement in the form specified and furnished to
such Participant by the Committee and by making such election by telephone voice response system or internet in accordance with such rules and regulations as the committee may prescribe. 

  

	 	3.	Participant elections of Reduction in Compensation shall specify the whole percentage of the Participant’s Compensation which such Participant elects not to receive in cash and
to defer as his/her Reduction in Compensation. Elections by Non-Bargaining Unit Participants shall be stated in full percentiles of the Participant’s Compensation. 

  

	 	4.	A Non-Bargaining Unit Participant’s election of a Reduction in Compensation in the Plan after the January 1, 1999, effective date of the Plan, as merged with the KGS
401(k) Thrift Plan, shall be effective as of the dates of commencement of participation specified in paragraph 2. of Article II; provided, that any Non-Bargaining Unit Employee who does not commence participation on or before the Designation Date
next following his/her initial date of eligibility may only elect a Reduction in Compensation to be effective as of a subsequent Designation Date. 

  

	 	5.	The Reduction in Compensation elected by a Non-Bargaining Unit Participant shall remain in effect until changed by such Participant’s delivery of a change of election in the
manner provided herein. A Non-Bargaining Unit Participant may change his/her Reduction in Compensation only on a Designation Date. A Non-Bargaining Unit Participant’s change of election may designate a different percentage of Reduction in
Compensation, subject to the terms and conditions of the Plan; and may state that such Participant elects no Reduction in Compensation and deferral after the Designation Date until he/she makes a subsequent change of election hereunder. Change of
election by written, voice response or internet direction may be delivered or transmitted by a Non-Bargaining Unit Participants at any time, but shall be effective only as of the Designation Date next following the date of the filing of such change
of election with the Committee. 

 B. Bargaining Unit Participants 
  

	 	1.	 For Plan Years beginning prior to January 1, 2005, each Payroll Period each Employee who is a Bargaining Unit Participant in this Plan may elect a Reduction

  

 - 32 - 

 
in Compensation in an amount from one percent (1%) to fourteen percent (14%) of such Bargaining Unit Participant’s Adjusted Total Compensation
paid during the Payroll Period, in one percent (1%) increments to be made by payroll deduction, provided that such Bargaining Unit Participant is an active Participant in the Plan during a portion of such Payroll Period, and such Reduction in
Compensation shall become the Company’s 401(k) Contribution for such Participant; 
 For Plan Years beginning on or after January 1,
2005, for each Payroll Period each Employee who is a Bargaining Unit Participant in this Plan may elect a Reduction in Compensation in an amount of one percent (1%) to twenty-four percent (24%) of such Bargaining Unit Participant’s
Adjusted Total Compensation paid during the Payroll Period, in one percent (1%) increments to be made by payroll deduction, provided that such Bargaining Unit Participant is an active Participant in the Plan during a portion of such Payroll
Period, and such Reduction in Compensation shall be the Company’s 401(k) Contribution for such Participant. 
 Provided, further that a
Bargaining Unit Participant’s Reduction in Compensation shall not exceed the limitation on excludible elective deferrals for such Participant’s taxable year, provided in Code Section 402(g), subject to applicable cost-of-living
adjustment thereunder, or as provided in any successor provision of federal tax law. 
  

	 	2.	Notwithstanding the foregoing, on or about the end of each calendar quarter in a Plan Year, a Bargaining Unit Participant will be allowed to contribute in a lump sum amount the
additional cash necessary to meet his/her maximum contribution percentage. Such pre-tax catch-up contributions will be made through payroll deduction and must be greater than $25.00. In a Plan Year a Bargaining Unit participant will be allowed to
make such catch-up contribution for previous quarters in the Plan Year. This catch-up contribution shall be considered in determining the Company’s Matching Contribution for such Bargaining Unit Participant to the extent provided in Article VII
of the Plan. 

  

	 	3.	The Reduction in Compensation elected by a Bargaining Unit Participant shall remain in effect until changed by such Participant’s delivery of a change of election in the manner
provided herein. A Bargaining Unit Participant may change his/her Reduction in Compensation only on a Designation Date. A Bargaining Unit Participant’s change of election may designate a different percentage of Reduction in Compensation,
subject to the terms and conditions of the Plan; and may state that such Participant elects no Reduction in Compensation and deferral after the Designation Date until he/she makes a subsequent change of election hereunder. Change of election by
written, voice response or internet direction may be delivered or transmitted by a Bargaining Unit Participants at any time, but shall be effective only as of the Designation Date next following the date of the filing of such change of election with
the Committee. 

  

 - 33 - 

 3. Roth 401(k) Elective Deferrals 
 A. General Application 
  

	 	1.	This paragraph of the Plan will apply to contributions beginning January 1, 2007. 

  

	 	2.	As of the effective date under paragraph 1, the Plan will accept Roth Elective Deferrals made on behalf of Participants. A Participant’s Roth Elective Deferrals shall be
allocated to a separate account maintained for such deferrals as described in paragraph 3.B of this Article III, below. 

  

	 	3.	Unless specifically stated otherwise, Roth Elective Deferrals will be treated as elective deferrals for all purposes under the Plan. 

  

	 	4.	A Participant may make Roth Elective Deferrals with catch-up contributions that are elective deferrals to the extent allowed by Code Section 402A. 

 B. Separate Accounting 
  

	 	1.	Contributions and withdrawals of Roth Elective Deferrals will be credited and debited to the Roth Elective Deferral Account maintained for each Participant.

  

	 	2.	The Plan will maintain a record of the amount of Roth Elective Deferrals in each Participant’s account. 

  

	 	3.	Gains, losses, and other credits or charges must be separately allocated on a reasonable and consistent basis to each Participant’s Roth Elective Deferral Account and the
Participant’s other accounts under the Plan. 

  

	 	4.	No contributions other than Roth Elective Deferrals and properly attributable earnings will be credited to each Participant’s Roth Elective Deferral Account.

 C. Direct Rollovers 
  

	 	1.	Notwithstanding the provisions of Article I, Part B., paragraph 5, of the Plan, a direct rollover of a distribution from a Roth Elective Deferral Account under the Plan will only be
made to another Roth Elective Deferral Account under an applicable retirement plan described in Code Section 402A(e)(1) or to a Roth IRA described in Code Section 408A, and only to the extent the rollover is permitted under the rules of
Code Section 402(c). 

  

	 	2.	Notwithstanding anything to the contrary in the provisions of Article I, Part B, paragraph 6, or Article V, paragraph 4, of the Plan, or any other provisions of the Plan, the Plan
will not accept any rollover contribution to a Roth Elective Deferral Account under the Plan from any other qualified plan, annuity contract or other type of plan, account or arrangement. 

  

 - 34 - 

	 	3.	The Plan will not provide for a direct rollover (including an automatic rollover) for distributions from a Participant’s Roth Elective Deferral Account if the amount of the
distributions that are eligible rollover distributions are reasonably expected to total less than $200 during a year. In addition, any distribution from a Participant’s Roth Elective Deferral Account is not taken into account in determining
whether distributions from a Participant’s other accounts are reasonably expected to total less than $200 during a year. However, eligible rollover distributions from a Participant’s Roth Elective Deferral Account are taken into account in
determining whether the total amount of the Participant’s account balances under the Plan exceeds $1,000 for purposes of mandatory distributions from the Plan. 

  

	 	4.	Any provisions of the Plan that allow a participant to elect a direct rollover of only a portion of an eligible rollover distribution but only if the amount rolled over is at least
a specified dollar amount are to be applied by treating any amount distributed from the Participant’s Roth Elective Deferral Account as a separate distribution from any amount distributed from the Participant’s other accounts in the Plan,
even if the amounts are distributed at the same time. 

 D. Correction of Excess Contributions 
  

	 	1.	In the case of a distribution of excess contributions, a Highly Compensated Employee may designate the extent to which the excess amount is composed of pre-tax elective deferrals
and Roth Elective Deferrals but only to the extent such types of deferrals were made for the year. 

 E. Distributions; Loans

  

	 	1.	Distributions from a Participant’s Roth Elective Deferral Account shall be made only to the extent, and at a time that is in accordance with and subject to all other terms and
provisions of the Plan generally applicable to a distribution of any elective deferral made by a Participant under the Plan. 

  

	 	2.	If the Highly Compensated Employee does not designate which type of elective deferrals are to be distributed, the Plan will distribute pre-tax elective deferrals first.

  

	 	3.	No Participant loan shall be allowed from a Participant Roth Elective Deferral Account. 

  

	 	 4.
	 The Committee and Plan shall provide written information to each Participant who is eligible to make a Roth Elective
Deferral describing the minimum required distribution provisions of Code Section 401(a)(9) that apply commencing at the time a Participant attains age 70 1/2, and the related federal income tax consequences of a distribution from a Roth Elective Deferral Account if it is before completion of the 5-taxable year period of participation for Roth Elective
Deferrals under the Plan. 

  

 - 35 - 

 F. Definition 
  

	 	1.	Roth Elective Deferrals. For purposes of the foregoing provisions of this paragraph, and otherwise under the Plan, “Roth Elective Deferral” is an elective deferral that
is: 

  

	 	(a)	Designated irrevocably by the Participant at the time of the cash or deferred election as a Roth Elective Deferral that is being made in lieu of all or a portion of the pre-tax
elective deferrals the Participant is otherwise eligible to make under the Plan; and 

  

	 	(b)	Treated by the Company as includible in the Participant’s income at the time the Participant would have received that amount in cash if the Participant had not made a cash or
deferred election. 

 4. ESOP Dividend Distribution/Additional Deferral Contribution 
 A. Each Participant in the Plan, unless such Participant elects otherwise in writing, shall be deemed to have also made an elective deferral of his/her Compensation in an
amount equal to the ESOP Dividend Distribution paid and distributed in cash to such Participant pursuant to subparagraphs 2.B. or D. of Article X, except that such ESOP Dividend Distribution/Additional Deferral of a Participant shall be limited to
an amount which, when added to such Participant’s regularly elected Reduction in Compensation under paragraph 2. of this Article III, will not cause such Participant’s total elective deferrals of Compensation for the year to exceed the
maximum permissible amount which may be deferred under Code Section 402(g) for the taxable year, and shall be subject to the reductions thereof as determined by the Committee in order to comply with applicable limitations in Code Sections
401(k) and 415 as provided in paragraphs 2., 3., and 7. of Article VIII. The fourteen percent (14%) of Compensation limitation on a Non-Bargaining Unit Participant’s or a Bargaining Unit Participant’s Reduction in Compensation stated
in paragraph 2.A. or 2.B. of this Article III, above, respectively, shall not apply to such Participant’s ESOP Dividend Distribution/Additional Deferral of his/her Compensation under this paragraph 3., and such limitation shall apply only to
regular ongoing elective deferrals of Compensation elected and designated by such a Participant. A Participant’s election in writing to not make a deemed ESOP Dividend Distribution/Additional Deferral shall be made at the time and in the manner
provided for in rules and procedures prescribed by the Committee. 
 B. The Company shall contribute to the Trust for each Plan Year that portion of the Net
Earnings of the Company for the Plan Year equal to the amount of the ESOP Dividend Distribution/Additional Deferral elected by each Participant pursuant to subparagraph 3A., above. 
 5. Time of Contribution 
 The Company shall make payment of its contributions to the Trust under the terms of this
Article III periodically within the time permitted by the Code and the Employee Retirement Income Security Act of 1974, as amended. 
  

 - 36 - 

 6. USERRA 
 The
elections to defer salary or compensation and related benefits provided herein shall be provided in accordance with the special rules relating to veterans rights under USERRA in Code Section 414(u). 
  

 - 37 - 

 ARTICLE IV. 
 AFTER-TAX PARTICIPANT CONTRIBUTIONS 
 PARAGRAPH 
 1. Percentage of After-Tax Deposits 
 A. Non-Bargaining Unit
Participants 
  

	 	1.	A Non-Bargaining Unit Participant may make After-Tax Deposits of from zero (0) to six percent (6%), as he/she may designate, of his/her Compensation. A Participant who has
commenced making deposits of his/her Compensation hereunder may thereafter change his/her deposit percentage from zero (0) to six percent (6%), as he/she may designate, in accordance with paragraph 2. of this Article IV. For Plan Years
commencing prior to January 1, 2005, a Non-Bargaining Unit Participant may not designate an After-Tax Participant Deposit Percentage which exceeds the lesser of (i) six percent (6%) of his/her Compensation, or (ii) eighteen
percent (18%) of his/her Compensation minus the amount of the Reduction in Compensation which he/she has elected under paragraph 2.A. of Article III (as reduced by the limitation on exclusion for elective deferrals in Code Section 402(g)
(or corresponding section of any future federal tax code), and the Actual Deferral Percentage Limitations thereon). 

 For Plan
Years beginning on or after January 1, 2005, a Non-Bargaining Unit Participant may not designate an After-Tax Participant Deposit Percentage which exceeds six percent (6%) of his/her Compensation. 
 If necessary to meet the limitations of paragraphs 2., 3., 4., or 7. of Article VIII, a Non-Bargaining Unit Participant’s After-Tax Deposits, or the
combination of a Non-Bargaining Unit Participant’s elected Reduction in Compensation and After-Tax Deposits shall be reduced in the manner determined by the Committee. In case the amount and percentage of a Non-Bargaining Unit
Participant’s elected After-Tax Participant Deposit must be so reduced, such reduction shall be to the next lower full percentile below the permissible limitation percentage, and shall remain in effect until the next succeeding Designation
Date, subject to any further adjustment necessary to meet such limitations under paragraphs 2., 3., 4., or 7. of Article VIII. 
  

	 	2.	Notwithstanding any other terms or provisions of the Plan for Plan Years beginning prior to January 1, 2005, the total contributions which a Non-Bargaining Unit Participant may
make by Reduction in Compensation and After-Tax Deposits shall not exceed eighteen percent (18%) of his/her Compensation. The limitation provided in this subparagraph shall not apply in Plan Years beginning on and after January 1, 2005.

 B. Bargaining Unit Participants. A Bargaining Unit Participant may make an After-Tax Deposits of from zero (0) to six percent
(6%) as he/she may designate, of his/her Compensation. 
  

 - 38 - 

 Notwithstanding the foregoing, on or about the end of each calendar quarter within a Plan Year, a Bargaining Unit
Participant may contribute in a lump sum amount the additional cash necessary to meet his/her maximum contribution percentage. Such after tax catch-up contributions may be made through payroll deduction, certified check, cashier’s check or
money order and must be greater than $25.00. A Bargaining Unit Participant will be allowed to make such catch-up contribution for previous calendar quarters during a Plan Year. This catch-up contribution shall be considered in determining the
Company Matching Contributions for such Bargaining Unit Participant to the extent provided in Article VII of the Plan. 
 2. Change of Percentage of
After-Tax Deposits 
 The deposit percentage designated by a Participant for his/her After-Tax Participant Deposit shall continue in effect,
notwithstanding any change in his/her Compensation, until he/she shall change such percentage. A Participant may change such percentage as of a Designation Date of January 1, April 1, July 1, or October 1 of any year,
but not retroactively. A Participant shall designate and change the percentage of his/her After-Tax Participant Deposit by written, voice response or internet direction to the Committee in the form and manner prescribed by the Committee. 

3. Deposit by Payroll Deduction 
 After-Tax Deposits under this
Article IV shall be effected only by payroll deductions in the amount designated by the Participant and in accordance with any regulations prescribed by the Committee; provided, that deposits may also be made in connection with the exercise of
options, rights or warrants as provided in paragraph 3. of Article IX, and deposits may be made in connection with rollover contributions or transfers of accounts, if authorized or directed as provided in Article V. 
 4. Transfer to Trust 
 The amount of the payroll deductions of
After-Tax Deposits so made shall be transferred at least monthly by the Company to the Trustee, and the Trustee shall hold the same in the respective Participants’ separate After-Tax Deposit Accounts, subject to the provisions of the Plan; and
any such amount shall not be subject to diversion or return to the Company, except return thereof to the Company in the case and to the extent its transfer having been by reason of a mistake of fact, in which case the return to the Company of the
amount involved shall be made within one (1) year of the mistaken payment. 
 5. USERRA 
 The right of a Participant to make after-tax deposits provided herein shall be provided in accordance with the special rules relating to veterans rights under USERRA in
Code Section 414(u). 
  

 - 39 - 

 ARTICLE V. 
 ROLLOVERS, TRANSFERRED ACCOUNTS 
 PARAGRAPH 
 1. Rollover from Other Plans of The Company 
 With the prior written
approval of the Committee, a Participant in this Plan may make a rollover contribution of all or part of a qualifying rollover distribution to such Participant from a trust which is a part of a separate qualified pension or profit-sharing plan of
the Company or any subsidiary of the Company. The allowance of any rollover contribution shall be at the discretion of the Committee, and only in accordance with such terms and conditions as the Committee may prescribe. The Participant’s
rollover contribution shall constitute an additional deposit in, and become a part of the accounts of the Participant for all purposes of the Plan, and become subject to all the terms and provisions of this Plan, except that the Company shall have
no obligation to contribute any amount, out of its net earnings and earned surplus, or otherwise, to or for the benefit of a Participant on account of any such rollover contribution by the Participant. Any Participant’s rollover contribution
shall be received, deposited, held, and invested in such manner as the Committee shall by regulation prescribe, consistent with the investment and accounting provisions of this Plan. 
 For purposes of this paragraph 1., a “qualified pension or profit-sharing plan” shall mean a plan qualified under Section 401(a) of the Code and ERISA; and a “qualifying rollover distribution”
shall mean a distribution to a Participant from a trust which forms a part of the Company or a subsidiary qualified pension or profit-sharing Plan which distribution constitutes a distribution qualifying for rollover to this Plan pursuant to Code
Section 402(c) (or corresponding provision of any future federal tax code). 
 2. Trust to Trust Transfers From Other Plans of The Company

 The Company may, from time to time, direct the Trustee to receive, accept transfers of, and hold as a part of the Trust, deposits or transfers of the
funds, deposits, property, assets, and/or accounts of Participants, or employees of any subsidiary of the Company, from a trust which is part of any other qualified defined benefit plan or qualified defined contribution plan of the Company or any
subsidiary of the Company. Any such deposit or transfer shall be subject to prior written approval of the Company, and may be pursuant to a modification, continuation, termination, partial termination, consolidation or merger with, or replacement of
any such other Company plan or subsidiary plan which may be adopted by the Company or the subsidiary employer, or pursuant to any other arrangement mutually determined and agreed upon by the Company and a subsidiary and/or the subsidiary employee
(or Participant). If an employee of the Company or of a subsidiary of the Company whose account is so transferred is otherwise eligible and not already participating in the Plan, he/she shall become a Participant at the time of such transfer and
deposit. Any funds or property from the account of a Participant under another Company plan or a subsidiary plan which are so transferred and accepted by the Trustee shall be received and deposited in full to an account or accounts of that
Participant under this Plan, and shall thereupon become a part of the Trust held for the account of that Participant in accordance 

  

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with all the terms and provisions of the Plan. The Committee shall determine and prescribe reasonable and appropriate procedures, certifications, and other
requirements to be accomplished and performed by the Company, the Trustee, the Participant, any such subsidiary and the plan administrator and trustee of such other Company plan or subsidiary plan, in order to assure an effective and satisfactory
transfer of trust funds, and any such transfer shall be conditioned upon compliance with all such requirements. Notwithstanding any of the foregoing, the Company shall have no obligation to make any matching or other additional contributions to the
Plan to or for the benefit of any Participant by reason of any such transfer or deposit to the Trust under this paragraph 2. 
 3. Trust to Trust
Transfers From Plans of Other Employers 
 The Company may, from time to time, direct the Trustee to receive, accept transfers of, and hold as a part of
the Trust, deposits or transfers of the funds, deposits, property, assets, and/or accounts of Participants from a trust which is part of any qualified defined contribution plan of another employer. Any such deposit or transfer shall be subject to
prior written approval of the Company, and may be pursuant to a modification, continuation, termination, partial termination, consolidation or merger with, or replacement of any such other plan which may be adopted by the Company, or pursuant to any
other arrangement mutually determined and agreed upon by the Company and such other employer. If an employee of the Company whose account is so transferred is otherwise eligible and not already participating in the Plan, he/she shall become a
Participant at the time of such transfer and deposit. Any funds or property from the account of a Participant under the plan of another employer which are so transferred and accepted by the Trustee shall be received and deposited in full to an
account or accounts of that Participant under this Plan, and shall thereupon become a part of the Trust held for the account of that Participant in accordance with all the terms and provisions of the Plan. The Committee shall determine and prescribe
reasonable and appropriate procedures, certifications, and other requirements to be accomplished and performed by the Company, the Trustee, the Participant, the plan administrator and trustee of such other employer plan, in order to assure an
effective and satisfactory transfer of trust funds, and any such transfer shall be conditioned upon compliance with all such requirements. Notwithstanding any of the foregoing, the Company shall have no obligation to make any matching or other
additional contributions to the Plan to or for the benefit of any Participant by reason of any such transfer or deposit to the Trust under this Paragraph 3. 
 4. Direct Rollovers From Qualified Plans of Other Employers 
 Participants in the Plan shall have the right to make direct rollover
contributions to the Trust of the Plan of assets from a qualified defined contribution plan or trust of another employer, or from a conduit Individual Retirement Account; provided, that pursuant to the provisions of Article III, paragraph 3.C.2. of
the Plan, a direct rollover or other contribution to the Plan shall not be allowed to a Roth Elective Deferral Account under the Plan or otherwise with respect to Roth account elective deferrals from a qualified plan or trust of another employer.
Any such assets so transferred to the Trust of the Plan shall be accompanied by written instructions from the other employer, trustee or custodian transferring such assets setting forth the name of the Participant for whose benefit such assets are
being transferred, and showing the respective contributions of the employer, if any, and the Participant, the current value of the assets attributable thereto, and such other information as the Committee and Trustee consider reasonably required in
order for 

  

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the Trustee to receive, hold and administer such assets in the Trust of the Plan. Upon receipt by the Trustee of such assets for a Participant, the Trustee
shall place such assets in a segregated fund or account for the Participant, and the Participant shall be deemed to be fully vested and have a nonforfeitable interest in such assets. The making of such a rollover transfer to the Trust shall not
constitute a contribution or deposit entitling a Participant to any matching contribution by the Company. Notwithstanding anything to the contrary expressed or implied herein, unless the Plan generally provides a life or joint and survivor annuity
form of distribution benefit, the Plan shall not be a direct or indirect transferee of or from any defined benefit pension plan, money purchase pension plan, profit sharing plan, stock bonus plan or other plan with is subject to the joint and
survivor annuity requirements of Code Sections 401(a)(11) and 417. 
 5. Direct Rollovers 
 Notwithstanding any provision of the Plan to the contrary that would otherwise limit a Distributee’s election under this Paragraph 5, a Distributee may elect, at the
time and in the manner prescribed by the Committee, to have any portion of an Eligible Rollover Distribution paid directly to an Eligible Retirement Plan specified by the Distributee in a Direct Rollover. 
 For purposes of this Paragraph 5, the following definitions shall apply: 
 (1) “Eligible Rollover Distribution” means any distribution of all or any portion of the balance to the credit of the Distributee, except that an Eligible Rollover Distribution does not include: any distribution that is one of a
series of substantially equal periodic payments (not less frequently than annually) made for the life (or life expectancy) of the Distributee or the joint lives (or joint life expectancies) of the Distributee and the Distributee’s designated
beneficiary, or for a specified period of ten years or more; any distribution to the extent such distribution is required under Code Section 401(a)(9); any hardship distribution; and the portion of any distribution that is not includible in
gross income (determined without regard to the exclusion for net unrealized appreciation with respect to employer securities). 
 (2) “Eligible
Retirement Plan” means an individual retirement account described in Code Section 408(a), an individual retirement annuity described in Code Section 408(b), an annuity plan described in Code Section 401(a)(3), an annuity contract
described in Code Section 403(b), a qualified trust described in Code Section 401(a), or an eligible plan under Code Section 457(b) which is maintained by state, political subdivision of a state, or any agency or instrumentality of a
state or political subdivision of a state and which agrees to separately account for amounts transferred into such plan from this Plan. 
 (3)
“Distributee” means an Employee or former Employee. In addition, the Employee’s or former Employee’s surviving spouse and the Employee’s or former Employee’s spouse or former spouse who is the alternate payee under a
qualified domestic relations order, as defined in Code Section 414(p), are Distributees with regard to the interest of the spouse or former spouse. 
 (4) “Direct Rollover” means a payment by the Plan to the Eligible Retirement Plan specified by the Distributee. 
  

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 ARTICLE VI. 
 SUSPENSION OF SALARY REDUCTIONS, DEPOSITS 
 PARAGRAPH 
 1. Suspension of Reduction in Compensation or After-Tax Deposits by Participant for Deficiency in Compensation 
 A Participant may, at any time elect in writing, in the manner prescribed by the Committee, to suspend his/her elected Reduction in Compensation or After-Tax Deposits in
any regular pay period in which either would normally be deducted pursuant to his/her prior election. In any pay period in which a Reduction in Compensation or After-Tax Participant Deposit would normally be deducted from such a Participant’s
pay, such Reduction in Compensation or After-Tax Participant Deposit will be automatically suspended without notice if his/her net pay for such pay period is insufficient to permit the deduction to be made in full. 
 2. Reinstatement of Voluntarily Suspended Reduction in Compensation or After-Tax Deposits 
 A Participant may at any time elect in writing to reinstate his/her Reduction in Compensation or After-Tax Participant Deposit to the Plan which he/she previously voluntarily suspended. Such election to reinstate a
previously suspended Reduction in Compensation or After-Tax Participant Deposit shall be made in the manner prescribed by the Committee and shall be effective on the first day of the calendar quarter next following the end of the calendar month in
which the Participant’s written election for such reinstatement is received by the Company. 
  

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 ARTICLE VII. 
 COMPANY MATCHING CONTRIBUTIONS 
 PARAGRAPH 
 1. Company Matching Contributions 
 After a Participant has completed
one (1) Year of Service as an Employee of the Company, subject to the limitations specified herein and in Article VIII, the Company shall regularly contribute, out of its net earnings and earned surplus as reflected by its books of account, and
shall pay to the Trustee at least monthly, amounts of Matching Contributions equal to the Company’s 401(k) Contributions for a Participant or a Participant’s After-Tax Deposits for that month, as follows: 
 A. Non-Bargaining Unit Participants 
  

	 	1.	The Company shall make a Matching Contribution for each Non-Bargaining Unit Participant which shall be equal to the Company’s 401(k) Contribution for such Participant based
upon such Participant’s elected Reduction in Compensation and deferral for that month, subject to the limitation stated in clause (3) of this subparagraph 1.A., below; provided, that the Company shall not make any Matching Contribution for
such a Non-Bargaining Unit Participant with respect to that part of the Company’s 401(k) Contribution that is an ESOP Dividend Distribution/Additional Deferral Contribution made for such Participant. 

  

	 	2.	After making the Matching Contribution provided for in subparagraph A. of this paragraph 1., above, the Company shall make a Matching Contribution for each Non-Bargaining Unit
Participant which shall be equal to such Participant’s After-Tax Deposits for that month, subject to the limitation stated in clause (3) of this subparagraph 1.A., below. 

  

	 	3.	The aggregate Matching Contributions of the Company under clauses (1) and (2) of this subparagraph 1.A. for a Non-Bargaining Unit Participant hereunder shall not exceed
six percent (6%) of the Non-Bargaining Unit Participant’s Compensation. 

  

	 	4.	 A full Matching Contribution shall be made for a Participant whose 401(k) Contributions equal the deferral limitation under Code Section 402(g) prior to the
Plan limit on Matching Contributions being reached for the Plan Year. If the Company’s 401(k) Contributions based upon a Participant’s elected Reduction in Compensation equal the Code Section 402(g) limitation at any time during a
Plan Year, and when such limitation is reached no further Company 401(k) Contributions or After-Tax Deposits are made for or by such Participant for that Plan Year, and the amount of Matching Contributions made for the Plan Year is then less than
the Maximum Matching Contribution Amount, the Company shall thereafter make one or more monthly Matching Contributions for the Participant in that Plan Year until the total Matching Contributions made for the Participant 

  

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for that Plan Year equal such Maximum Matching Contribution Amount. For purposes of this subparagraph A.4, the term “Maximum Matching Contribution
Amount” shall mean lesser of (i) the total amount of the Company’s 401(k) Contributions for the Participant and the Participant’s After-Tax Contributions for that Plan Year, or (ii) six percent (6%) of the total of the
Participant’s monthly compensation for all months in that Plan Year. 
 B. Bargaining Unit Participants. On and after July 1, 2004, for each
payroll period the Company shall make a Matching Contribution for each Bargaining Unit Participant equal to one hundred percent (100%) of the percentage of any Company 401(k) Contribution and of any After-Tax Deposit for the Payroll Period
times such Bargaining Unit Participant’s Annual Compensation; provided, , that the Company’s Matching Contribution for a Payroll Period shall apply only to the first six percent (6%) of the amount of any Bargaining Unit
Participant’s Annual Compensation paid for the Payroll Period, and any Matching Contribution shall only be made with respect to any Bargaining Unit Participant’s Adjusted Total Compensation for Payroll Periods beginning after the first day
of the calendar month coincident with or next following completion of one (1) year of service by such Bargaining Unit Participant. The Company’s maximum Matching Contribution shall in all cases be allocated and contributed first to match
the Company’s 401(k) Contribution for the Participant’s Reduction in Compensation for that month, and shall then be allocated and contributed to match a Participant’s After-Tax Deposit only to the extent such Participant’s
Reduction in Compensation for that month is less than the Company’s maximum Matching Contribution for that month. If necessary to meet the limitations of paragraphs 2., 3., 4., or 7. of Article VIII, the Company’s Matching Contributions
for a Participant shall be reduced in the manner determined by the Committee. Such reductions shall be made in a uniform and nondiscriminatory manner, determined by the Committee in its sole discretion, which are needed to comply with such
limitations. For information and reference with respect to administration of the Plan prior to July 1, 2004, a seventy-five percent (75%) matching contribution percentage was effective on and after June 5, 2001, for Bargaining Unit
Participants who were Group A Bargaining Unit Employees; and was effective on and after July 1, 2001, for Bargaining Unit Participants who were Group B Bargaining Unit Employees; and a one hundred percent (100%) matching contribution
percentage was effective on and after July 20, 2003, for Bargaining Unit Participants who were Group B Bargaining Unit Employees. 
 2.
Participant’s Matching Contribution Account 
 The Company’s Matching Contribution shall be credited to each participating Participant’s
Employer Contribution Account. 
 3. Re-entry of Participant 
 If a former Participant whose employment has terminated shall be rehired as an Employee, he/she shall be entitled to have all his/her prior service counted for purposes of the one (1)-year service requirement for entitlement to Company
Matching Contributions. 
  

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 4. USERRA 
 The
Company matching contributions provided for under the Plan shall be provided in accordance with the special rules relating to veterans rights under USERRA in Code Section 414(u). 
  

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 ARTICLE VIII. 
 LIMITATIONS ON CONTRIBUTIONS AND ANNUAL ADDITIONS 
 PARAGRAPH 
 1. General 
 Company contributions, After-Tax Deposits, and other
contributions under the Plan shall be limited as provided in this Article VIII. 
 2. Elective Deferral Limitations 
 The Elective Deferrals of a Participant for any taxable year shall not exceed the limitation on elective deferrals provided in Code Section 402(g) (or corresponding
section of any future federal tax code), as adjusted for cost-of-living increases thereunder; the Participant shall not be permitted to make Elective Deferrals under the Plan at a rate which will result in that limitation being exceeded in any Plan
Year or taxable year of the Participant; the amount of a Participant’s Elective Deferrals in the form of Reductions in Compensation, and ESOP Dividend Deferrals, and all other Elective Deferrals under this Plan and all other plans, contracts,
or arrangements of the Company may not exceed such limitation provided in Code Section 402(g), as adjusted for cost-of-living increases. 
 3. Actual
Deferral Percentage Limitations 
 The Actual Deferral Percentage for the Highly Compensated Employees for the Plan Year shall not exceed the greater of
A. or B. as follows: 
 A. The Actual Deferral Percentage for the preceding Plan Year for all those Employees eligible to be Participants in this Plan who are
not Highly Compensated Employees, multiplied by 1.25, or 
 B. The Actual Deferral Percentage for the preceding Plan Year for those Employees eligible to be
Participants in this Plan who are not Highly Compensated Employees multiplied by two (2); provided, however, that under this subparagraph 3.B. limitation the Actual Deferral Percentage for the Highly Compensated Employees may not exceed the Actual
Deferral Percentage for the preceding Plan Year for the Employees eligible to be Participants in this Plan who are not Highly Compensated Employees by more than two (2) percentage points. 
 This limitation shall be applied and used in testing under the prior or preceding year method under Code Section 401(k)(3). Provided, the Company may amend the Plan
to provide that it elects to apply the limitations of subparagraphs A. and B. of this paragraph by using the Actual Deferral Percentage of eligible Participants who are not Highly Compensated Employees for the Plan Year rather than the preceding
Plan Year in accordance with applicable Regulations, except that if such election is made, it may not be changed except as provided by the Internal Revenue Service under Code Section 401(k)(3). 
  

 - 47 - 

 If any Highly Compensated Employee is a participant in two (2) or more cash or deferred arrangements of the Company,
for purposes of determining the Actual Deferral Percentage with respect to such Participant, all such cash or deferred arrangements shall be treated as one (1) cash or deferred arrangement, for purposes of this paragraph and the Plan, in
accordance with Code Section 401(k)(3) and Treasury Regulations §1.401(k)-1(g). 
 If two (2) or more plans which include cash or deferred
arrangements are considered as one (1) plan for purposes of Code Section 401(a)(4) or 410(b), the cash or deferred arrangements included in such plans shall be treated as one (1) arrangement for purposes of this paragraph and the
Plan, in accordance with Code Section 401(k)(3) and Treasury Regulations §§1.401(k)-1(b)(3) and 1.401(k)-1(g). 
 4. Limitations on Company
Matching Contributions 
 The Matching Contribution Percentage for eligible Highly Compensated Employees for any Plan Year shall not exceed the greater of
(i) one hundred twenty-five percent (125%) of such percentage for all other eligible Employees, for the preceding Plan Year, or (ii) the lesser of two hundred percent (200%) of such Matching Contribution Percentage for all other
eligible Employees for the preceding Plan Year, or such Matching Contribution Percentage for all other eligible Employees for the preceding Plan Year, plus two (2) percentage points. 
 This limitation shall be applied and used in testing under the prior or preceding year method under Code Section 401(m)(2). Provided, the Company may amend the Plan
to provide that elects to apply the limitations of this paragraph by using the Plan Year rather than the preceding Plan Year, in accordance with applicable Regulations, except that if such election is made, it may not be changed except as provided
by the Internal Revenue Service under Code Section 401(m)(2). 
 If two (2) or more plans of the Company to which matching contributions, employee
contributions, or elective deferrals are made are treated as one (1) plan for purposes of Code Section 410(b), such plans shall be treated as one (1) plan for purposes of this paragraph and the Plan, for purposes of this paragraph and
the Plan, in accordance with Code Section 401(m)(2)(B) and Treasury Regulations §1.401(m)-1(f). 
 If a Highly Compensated Employee participates in
two (2) or more plans of the Company to which contributions to which Code Section 401(m) applies are made, all such contributions shall be aggregated for purposes of this paragraph and the Plan, in accordance with Code
Section 401(m)(2)(B) and Treasury Regulations §§1.401(m)-1(b)(3) and 1.401(m)-1(f). 
 5. Separate Application of Limitations

 If this Plan is maintained by separate employers as a multiple employer plan, the Actual Deferral Percentage limitations in paragraph 3. above, and the
Matching Contribution Percentage limitations in paragraph 4. above, shall be applied as if each separate employer maintaining this Plan as a multiple employer plan maintained a separate plan. 
  

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 6. Multiple Use of Alternative Limitation 
 If any Highly Compensated Employee is eligible to elect to make Reductions in Contributions and to make After-Tax Deposits or to receive Company Matching Contributions under the Plan, and the sum of the Actual
Deferral Percentage of the entire group of eligible Highly Compensated Employees and the actual contribution percentage of the entire group of eligible Highly Compensated Employees under the Plan subject to Code Section 401(m) exceeds the
aggregate limit specified in Treasury Regulations Section 1.401(m)-2(b)(2), or succeeding regulations prescribed under Code Section 401(m)(9), then such excess shall be corrected by reduction of the Actual Deferral Percentage or the actual
contribution percentage of Highly Compensated Employees in accordance with the provisions of Treasury Regulations Section 1.401(m)-2(c) or succeeding regulations. 
 7. Maximum Annual Additions 
 The maximum Annual Additions credited to a Participant’s Account shall not exceed
the lesser of $30,000 or twenty-five percent (25%) of the Participant’s annual compensation from the Company. For the purposes of this paragraph, the “Annual Additions” are equal to the sum for any year of (i) employer
contributions and (ii) the Participant’s contributions (but not including any rollover contributions as defined in the Code). Contributions allocated to any individual medical account which is part of a pension or annuity plan shall also
be treated as an Annual Addition to a defined contribution plan, to the extent provided in Code Section 415(l); and any amount attributable to medical benefits allocated to a separate account for post-retirement medical benefits for a key
employee shall be treated as an Annual Addition to a defined contribution plan to the extent provided in Code Section 419(A)(d). The limitation year for purposes of the limitations on Annual Additions is the Plan Year, which is the twelve
(12) month period beginning on January 1 and ending on the subsequent December 31. 
 For purposes of this paragraph 7., the term
“compensation” means the Participant’s wages, salaries, fees for professional services, and other amounts received for personal services actually rendered in the course of employment with the Company (including, but not limited to,
commissions paid salesmen, compensation for services on the basis of a percentage of profits, commissions on insurance premiums, tips, and bonuses). The term “compensation” shall include (i) any elective deferral as defined in Code
Section 402(g)(3), and (ii) any amount which was contributed or deferred by the Company at the election of the Participant and which is not includible in gross income of the Participant by reason of Code Section 125. The term
“compensation” shall not include (i) Company contributions to a plan of deferred compensation to the extent the contributions are not included in the gross income of the Employee for the taxable year in which contributed, on behalf of
an Employee to a simplified employee pension plan described in Code Section 408(k) to the extent such contributions are deductible by the Employee under Code Section 219(b)(7) and any distributions from a plan of deferred compensation,
regardless of whether such amounts are includible in the gross income of the Employee when distributed; (ii) amounts realized from the exercise of a nonqualified stock option, or when restricted stock (or property) held by an Employee either
becomes freely transferable or is no longer subject to a substantial risk of forfeiture; (iii) amounts realized from the sale, exchange or other disposition of stock acquired under a qualified stock option; or (iv) other amounts which
receive special tax benefits, such as premiums for group term life insurance 

  

 - 49 - 

 
(but only to the extent that the premiums are not includible in the gross income of the Employee), or contributions made by the Company (whether or not under
a salary reduction agreement) towards the purchase of an annuity contract described in Code Section 403(b) (whether or not the contributions are excludible from the gross income of the Employee). 
 The foregoing definitional provisions of this paragraph 7. shall apply solely thereto. For purposes of applying the limitations of this paragraph 7., amounts included as
compensation are those actually paid or made available to a Participant within the Plan Year. 
 The maximum benefit limitation of thirty thousand dollars
($30,000) shall be adjusted to reflect increases in the cost of living applicable thereto in accordance with the Code and regulations prescribed by the Secretary of Treasury. 
 The maximum benefit limitation of thirty thousand dollars ($30,000) shall be adjusted to reflect changes therein made by the Economic Growth and Tax Relief Reconciliation Act of 2001, and subsequent changes to Code
Section 415(c) (or corresponding section of any future federal tax code). 
 For purposes of the annual maximum benefit limitation for any Participant
in this Plan who is also concurrently a Participant of a defined benefit plan maintained by the Company, for years beginning before January 1, 2000, such limitation shall be applied as specified in the Retirement Plan of the Company and the sum
of the defined benefit plan fraction and the defined contribution plan fraction for the purposes of this Plan and application of the combined plan maximum annual limitation shall be as defined in the Retirement Plan and by the Secretaries of Labor
and Treasury pursuant to ERISA and the Code. 
 All defined contribution plans of the Company shall be treated together with this Plan as one defined
contribution plan in determining the combined plan maximum annual limitation. 
 If as a result of the allocation of any forfeitures, a reasonable error in
estimating a Participant’s annual Compensation, or under other limited facts and circumstances which justify the availability of the rules set forth in Treasury Regulation 1.415-6(b)(6), the Annual Additions under the terms of this Plan for a
particular Participant would cause the limitations of Code Section 415 applicable to that Participant for the limitation year to be exceeded, the excess amounts shall not be deemed Annual Additions in that limitation year and such excess
amounts in the Participant’s account must be disposed of as hereinafter provided. Any elective deferrals (plus attributable earnings), to the extent they would reduce the excess amount shall be distributed to the Participant. If an excess still
exists, the excess amount will be used to reduce Company contributions for the next limitation year (and succeeding limitation years, as necessary) for that Participant if that Participant is covered by the Plan as of the end of the limitation year.
However, if that Participant is not covered by the Plan as of the end of such limitation year, then the excess amounts must be held unallocated in a suspense account for the limitation year and allocated and reallocated in the next limitation year
to all remaining Participants in the Plan. However, if such allocation or reallocation of the excess amounts pursuant to the provisions hereof causes the limitations of Code Section 415 to be exceeded with respect to each Participant for the
limitation year, then these amounts must be held unallocated in a suspense account. If such a suspense account is in existence at any time during a particular 

  

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limitation year, other than the limitation year described in the preceding sentence, all amounts in the suspense account must be allocated or reallocated to
Participants’ accounts as herein provided, (subject to the limitations of Code Section 415) before any Company contributions which would constitute Annual Additions may be made to the Plan for that limitation year. The excess amounts must
be used to reduce Company contributions for the next limitation year (and any succeeding limitation years, as necessary). Excess amounts may not be distributed to Participants or former Participants. 
 8. No Return or Diversion of Contributions Except for Mistake 
 Except
as provided in paragraphs 9. and 10. of this Article VIII below, the Trustee shall hold the Company’s contributions in the respective Participants’ Accounts, subject to the provisions of the Plan; and no part of those contributions shall
be recoverable by the Company, nor shall they be used for, or diverted to any other purpose, except for return thereof to the Company in the case and to the extent of its contributions having been made by reason of a mistake of fact, in which case
the return to the Company of the amount involved shall be made within one (1) year of the mistaken contribution; and if a contribution to the Plan conditioned upon the deductibility of the contribution under Code Section 404, as provided
in paragraph 14. of this Article VIII, then such contribution may be returned to the Company (to the extent disallowed) within one (1) year after the disallowance of the deduction; provided, that any contribution for a Participant which exceeds
the limitations provided in paragraphs 2. and 3. of this Article VIII shall be distributed to the Participant as directed by the Committee within a reasonable period of time consistent with requirements for distributing excess deferrals under the
Code and regulations thereunder. 
 9. Distribution of Excess Deferrals 
 If any Excess Deferrals are included in the gross income of a Participant for any taxable year under Code Section 402(g)(1), (or corresponding section of any future federal tax code), then not later than
March 1 following the close of the taxable year, such Participant may allocate the amount of such Excess Deferrals among the plans under which the Excess Deferrals were made and may notify the Committee of the portion allocated to the Plan; and
not later than April 1 following the close of the taxable year, the Plan may distribute to such Participant the amount allocated to the Plan (and any income allocable to such amount). Such distribution of the Excess Deferrals of a Participant
may be made notwithstanding any other provision of the Plan, the Code, or ERISA; provided, that except to the extent provided in applicable Treasury Regulations, notwithstanding the distribution of such portion of Excess Deferrals from the Plan,
such portion shall be treated as a contribution of the Company for purposes of applying the limitations in paragraphs 3. and 4. of this Article VIII and Code Section 401(k). If the Plan distributes only a portion of any Excess Deferrals
allocated to the Plan and income allocable thereto, such portion shall be treated as having been distributed ratably from the Excess Deferral allocable to the Plan and the income. 
 10. Excess 401(k) Contributions 
 In the event there are Excess Contributions under the limitations of Code
Section 401(k) for any Plan Year actually paid over to the Trust on behalf of Highly Compensated Employees, then the 

  

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Committee may, in its sole discretion, direct the Trustee to distribute the amount of such Excess Contributions for such Plan Year (and any income allocable
to such Excess Contributions). Notwithstanding any other provision of this Plan, Excess Contributions plus any income and minus any loss allocable thereto, shall be distributed no later than the last day of each Plan Year to Participants to whose
accounts such Excess Contributions were allocated for the preceding Plan Year; provided, that such distribution shall be made as promptly as practicable, so as to avoid the effect of Code provisions stating that if such excess amounts are
distributed more than 2 1/2 months after the last day of the Plan Year in which such excess amounts arose, a ten
percent (10%) excise tax will be imposed on the employer maintaining the Plan with respect to such amounts. Excess Contributions shall be allocated to the Highly Compensated Employees with the largest amounts of Company contributions taken into
account in calculating the Actual Deferral Percentage test for the year in which the excess arose, beginning with the Highly Compensated Employee with the largest amount of such Company contributions and continuing in descending order until all the
Excess Contributions have been allocated. For purposes of the preceding sentence the “largest amount” is determined after distribution of Excess Contributions. If such excess amounts are distributed more than two and one-half (2 1/2) months after the last day of the Plan Year in which such excess amounts arose, a 10-percent excise tax will
be imposed on the Company with respect to such amounts. 
 Excess Contributions (including the amounts recharacterized) shall be treated as
annual additions under the Plan. 
 Excess Contributions shall be adjusted for any income or loss up to the end of the Plan Year. Unless otherwise determined
by the Committee, the income or loss allocable to Excess Contributions is the income or loss allocable to the Participant’s Elective Deferral account (and, if applicable, the Qualified Non-elective Contribution account or the Qualified Matching
Contributions account or both) for the Plan Year multiplied by a fraction, the numerator of which is such Participant’s Excess Contributions for the year and the denominator is the Participant’s account balance attributable to Elective
Deferrals (and Qualified Non-Elective Contributions or Qualified Matching Contributions, or both, if any of such contributions are included in the Actual Deferral Percentage test) without regard to any income or loss occurring during such Plan Year.

 Excess Contributions shall be distributed from the Participant’s Elective Deferral account and Qualified Matching Contribution account (if
applicable) in proportion to the Participant’s Elective Deferrals and Qualified Matching Contributions (to the extent used in the Actual Deferral Percentage test) for the Plan Year. Excess Contributions shall be distributed from the
Participant’s Qualified Non-elective Contribution account only to the extent that such Excess Contributions exceed the balance in the Participant’s Elective Deferral account and Qualified Matching Contribution account. 
 The Committee may, in its sole discretion, permit a Participant to treat his or her Excess Contributions as an amount distributed to the Participant and then contributed
by the Participant to the Plan. Such recharacterized amounts will remain nonforfeitable and subject to the same distribution requirements as Elective Deferrals under the Plan. Amounts may not be recharacterized by a Highly Compensated Employee to
the extent that such amount in combination with other Participant contributions made by the Participant would exceed any 

  

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stated limit under the Plan on Participant contributions. Any such recharacterization must occur no later than two and one-half (2 1/2) months after the last day of the Plan Year in which such Excess Contributions arose and is deemed to occur
no earlier than the date the last Highly Compensated Employee is informed in writing of the amount recharacterized and the consequences thereof. Recharacterized amounts will be taxable to the Participant for the Participant’s tax year in which
the Participant would have received them in cash. 
 If and to the extent Excess Contributions (and income allocable thereto) are distributed, such
Excess Contributions and allocable income shall be designated by the Company as a distribution of Excess Contributions (and income) and shall be distributed to the appropriate Highly Compensated Employees after the close of the Plan Year in which
the Excess Contributions arose and within twelve (12) months after the close of that Plan Year. In all cases, for purposes of the foregoing, the income allocable to Excess Contributions shall equal the sum of the allocable gain or loss for the
Plan Year. In addition to the provisions stated above, the Committee may determine and use any reasonable method for computing the income allocable to Excess Contributions, which method shall be nondiscriminatory in favor of Highly Compensated
Employees, be used consistently for all Participants and for all corrective distributions under the Plan for the Plan Year, and be used by the Plan for allocating income to Participants’ accounts. 
 The amount of Excess Contributions to be distributed or to be recharacterized under the foregoing provisions of this Article VIII with respect to a Participant shall be
reduced by any Excess Contributions previously distributed to the Participant for the Participant’s taxable year ending with or within the Plan Year in accordance with Code Section 402(g)(2), (or corresponding section of any future federal
tax code), and the amount of Excess Contributions that may be distributed with respect to a Participant for a taxable year shall be reduced by any Excess Contributions previously distributed or recharacterized with respect to the Participant for the
Plan Year beginning with or within the taxable year, in the manner necessary to satisfy the applicable provisions of the Treasury Regulations under Code Section 401(k). 
 11. Excess Aggregate Contributions 
 In the event the aggregate amount of Matching
Contributions and employee contributions (and any qualified nonelective contribution or elective contribution taken into account in computing the contribution percentage) actually made on behalf of Highly Compensated Employees for any Plan Year is
an amount in excess of the maximum amount of such contributions permitted under the limitations on matching contributions stated in paragraph 4. of this Article VIII (determined by reducing contributions made on behalf of Highly Compensated
Employees in order of their contribution percentages beginning with the highest of such percentages), then the Committee may, in its sole discretion, direct the Trustee to distribute the amount of such excess of such contributions for such Plan Year
(and any income allocable to such contributions), but the distribution of such excess contributions (and income) shall be made within two and one-half (2 1/2) months after the close of such Plan Year. Any distribution of such excess aggregate contributions for any Plan Year shall be made to Highly Compensated Employees on the basis of the amount of
contributions on behalf of, or by, each such Highly Compensated Employee. 
 The determination of the amount of such excess aggregate contributions
with respect to the Plan shall be made after (i) first determining the excess deferrals (within the meaning of Code Section 402(g) (or corresponding section of any future federal tax code)), and (ii) then determining the excess 401(k)
Contributions under paragraph 3. of this Article VIII. 
  

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 Notwithstanding any other provision of this Plan, Excess Aggregate Contributions,
plus any income and minus any loss allocable thereto, shall be distributed no later than the last day of each Plan Year to Participants to whose accounts such Excess Aggregate Contributions were allocated for the preceding Plan Year; provided, that
such distribution shall be made as promptly as practicable, so as to avoid the effect of Code provisions stating that if such Excess Aggregate Contributions are distributed more than 2 1/2 months after the last day of the Plan Year in which such excess amounts arose, a ten percent (10%) excise tax will be imposed on the employer
maintaining the Plan with respect to those amounts. 
 Excess Aggregate Contributions shall be treated as annual additions under the Plan. 

Excess Aggregate Contributions shall be adjusted for any income or loss up to the end of the Plan Year. Unless otherwise determined by the Committee, the income or
loss allocable to Excess Aggregate Contributions is the income or loss allocable to the Participant’s Employee Contribution account Matching Contribution account, Qualified Matching Contribution account (if any, and if all amounts therein are
not used in the Actual Deferral Percentage test) and, if applicable, Qualified Non-elective Contribution account and Elective Deferral account for the Plan Year multiplied by a fraction, the numerator of which is such Participant’s Excess
Aggregate Contributions for the year and the denominator is the Participant’s account balance(s) attributable to Contribution Percentage Amounts without regard to any income or loss occurring during such Plan Year. 
 Excess Aggregate Contributions shall be distributed on a pro-rata basis from the Participant’s Employee Contribution account, Matching Contribution account, and
Qualified Matching Contribution account (and, if applicable, the Participant’s Qualified Non-elective Contribution account or Elective Deferral account, or both). 
 The method of distributing Excess Aggregate Contributions shall in all cases satisfy the requirements of Code Section 401(a)(4), and after any correction by means of such distributions, each level of matching
contributions must be currently and effectively available to a group of Employees that satisfies Code Section 410(b), and in correcting Excess Aggregate Contributions by means of distributions, Participant contributions may not be distributed
to Highly Compensated Employees to the extent needed to meet the requirements of Code Section 401(m)(2) while Matching Contributions attributable to Participant Contributions remain allocated to Highly Compensated Employees’ accounts;
provided, that a method of distributing Excess Aggregate Contributions may include the distribution of unmatched Participant contributions that exceed the highest rate at which Participant contributions are matched before matched Participant
contributions, or the distribution of Matching Contributions prior to Participant contributions. 
 The distribution of Excess Aggregate Contributions under
this paragraph shall include all income applicable thereto. The income allocable to Excess Aggregate Contributions is equal to the sum of the allocable gain or loss for the Plan Year. In addition, to the provisions stated above, the Committee may
determine and use any reasonable method for computing the income allocable to 

  

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Excess Aggregate Contributions, which method shall be nondiscriminatory in favor of Highly Compensated Employees, be used consistently for all Participants
and for all corrective distributions under the Plan for the Plan Year, and be used by the Plan for allocating income to Participants’ accounts. 
 12. Qualified Nonelective and Matching Contributions 
 The Company may, in its sole discretion, elect to make Qualified Nonelective
Contributions and Qualified Matching Contributions that are to be treated as 401(k) Contributions in order to satisfy the Actual Deferral Percentage tests prescribed in paragraph 3. of this Article VIII, and treated as Company Matching
Contributions, to satisfy the nondiscrimination tests prescribed in paragraph 4. of this Article VIII provided that such Qualified Nonelective Contributions or Qualified Matching Contributions shall be treated as 401(k) Contributions or Company
Matching Contributions, provided that they satisfy the requirements for such treatment prescribed by the applicable Treasury Regulations. The term “Qualified Nonelective Contributions” means Company contributions to the Plan other than
401(k) Contributions and Company Matching Contributions that satisfy the requirements of the nondiscrimination requirements of the Plan provided in paragraph 3. of this Article VIII, and the distribution limitations applicable to 401(k)
Contributions under the Plan, Code Section 401(k)(2)(B), and Treasury Regulations Section 1.401(k)-1(d). 
 The amount of any nonelective
contributions to the Plan, including those Qualified Nonelective Contributions treated as elective contributions for purposes of the Actual Deferral Percentage test, must satisfy the requirements of Code Section 401(a)(4) and Treasury
Regulations thereunder; the amount of nonelective contributions, excluding those Qualified Nonelective Contributions treated as elective contributions for purposes of the Actual Deferral Percentage Test and those nonelective contributions treated as
matching contributions for purposes of the Actual Deferral Percentage Test must satisfy the requirements of Code Section 401(a)(4) and applicable Treasury Regulations thereunder; and the Qualified Nonelective Contributions and Qualified
Matching Contributions must satisfy the requirements of Treasury Regulation § 1.401(k)-1(b)(4)(i)(A) for the Plan Year as if such contributions were elective contributions. 
 The aggregation requirements specified in Treasury Regulations § 1.401(k)-1(b)(5)(vi) shall be satisfied with respect to any taking into account of Qualified Nonelective Contributions and Qualified Matching
Contributions for purposes of the Actual Deferral Percentage test. 
 The Plan shall be administered by the Committee to assure that the amount of
nonelective contributions, including those Qualified Nonelective Contributions treated as Matching Contributions for purposes of the Actual Contribution Percentage test, shall satisfy the requirements of Code Section 401(a)(4) and the Treasury
Regulations thereunder. The amount of nonelective contributions, excluding those Qualified Nonelective Contributions treated as Matching Contributions for purposes of the Actual Contribution Percentage test and those Qualified Nonelective
Contributions treated as elective contributions under Code Section 401(k) for purposes of the Actual Deferral Percentage Test, shall satisfy Code Section 401(a)(4) and the Treasury Regulations thereunder; the elective contributions,
including those treated as Matching Contributions for purposes of the Actual Contribution Percentage Test must satisfy the requirements of Code Section 401(k)(3); the Qualified Nonelective Contributions shall be 

  

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allocated to the Participant under the Plan as of a date within the Plan Year, and the elective contributions shall satisfy Code Section 401(k) and the
Treasury Regulations thereunder for the Plan Year; and the aggregation of plans requirements of Treasury Regulations § 1.401(m)-1(b)(5)(v) shall be satisfied. 
 13. Plan Not Dependent Upon Earnings; Company Contributions Limited to Earnings 
 This Plan is intended to be a profit-sharing plan within
the meaning of Code Sections 401(a)(1) and 401(a) (27) without regard to current or accumulated earnings and profits of the Company; provided, that if at any time the Company’s net earnings and earned surplus as reflected by its books of
account are insufficient to permit the making in full therefrom of any contribution otherwise required to be made by the Company hereunder, such contributions shall be required to be made only to the extent, if any, that such net earnings, earned
surplus, and accumulated earnings and profits are sufficient, and the deficiency shall not thereafter be made up even though such earnings and profits again become sufficient therefor; provided further, however, that the portion of this Plan which
constitutes an employee stock ownership plan is intended to be a stock bonus plan within the meaning of Code Sections 401(a) and 4975(e)(7), and the Treasury regulations thereunder which is established and maintained by the Company to provide
benefits similar to those of a profit-sharing plan except that the contributions by the Company are not necessarily dependent upon profits and the benefits are distributable in stock of the Company. 
 14. Maximum Contribution 
 In no event, however, shall Company
contributions be made in excess of the amount deductible under Code Section 404, or other applicable federal law now or hereafter in effect. 
 15.
Application of Dollar Leveling Method. 
 The distribution of Excess Contributions for any Plan Year shall be made to Highly Compensated Employees on the
basis of the amount of contributions by, or on behalf of each Highly Compensated Employee in accordance with Code Section 401(k)(8)(C). A parallel method shall also be used for recharacterizing Excess Contributions under Code
Section 401(k)(8)(A)(ii), and for distributing Excess Aggregate Contributions under Code Section 401(m)(6)(C). 
 In order to distribute Excess
Contributions (and to apply a parallel method to recharacterize Excess Contributions, or distribute Excess Aggregate Contributions, as applicable) the following procedure and method shall be used: 
 (1) Calculate the dollar amount of Excess Contributions for each affected Highly Compensated Employee in a manner described in Code Section 401(k)(8)(B) and Treasury
Regulations § 1.401(k)-1(f)(2). However, in applying these rules, rather than distributing the amount necessary to reduce the Actual Deferral Percentage of each affected Highly Compensated Employee in order of such Highly Compensated Employees
Actual Deferral Percentages, beginning with the highest Actual Deferral Percentage, the Plan shall use these amounts in step (2.) 
 (2) Determine the total
of the dollar amounts calculated in step (1). 
  

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 This total amount in step (2) (total excess contributions) should be distributed in accordance with steps
(3) and (4), below: 
 (3) The elective contributions of the Highly Compensated Employee with the highest dollar amount of elective contributions are
reduced by the amount required to cause that Highly Compensated Employee’s elective contributions to equal the dollar amount of the elective contributions of the Highly Compensated Employee with the next highest dollar amount of elective
contributions. This amount is then distributed to the Highly Compensated Employee with the highest dollar amount. However, if a lesser reduction, when added to the total dollar amount already distributed under this step, would equal the total excess
contributions, the lesser reduction amount is distributed. 
 (4) If the total amount distributed is less than the total excess contributions, step
(3) is repeated. 
 After Excess Contributions and Excess Aggregate Contributions, if any, have been distributed using the method described above, the
multiple use test of Code Section 401(m)(9) shall be applied. For purposes of Code Section 401(m)(9), if a corrective distribution of excess contributions has been made, or a recharacterization has occurred, the Actual Deferral Percentage
for Highly Compensated Employees shall be deemed to be the largest amount permitted under Code Section 401(k)(3). Similarly, if a corrective distribution of excess aggregate contributions has been made, the Actual Contribution Percentage for
Highly Compensated Employees shall be deemed to be the largest amount permitted under Code Section 401(m)(2). 
  

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 ARTICLE IX. 
 INVESTMENT PROVISIONS 
 PARAGRAPH 
 1. Participant Directed Investment 
 A. Direction of Investment; Investment Options. A Participant may, by
delivery of his/her direction to the Committee in the manner and form it prescribes, in turn direct the Trustee, that any or all cash in his/her account, including his/her deposits, the Company’s contributions, and any other cash, shall be
invested under any one or more of certain designated investment options made available under the Plan. The Committee shall in turn furnish or cause the Participant’s investment direction to be delivered to and acted upon by the Trustee within
such period of time as the Committee determines to be reasonable and practicable in the circumstances. A Participant’s initial direction of investment shall be in written form as prescribed by the Committee. A Participant may, after initial
written direction of investment, give directions for changes in the investment of his/her account by written direction, use of the telephone voice response system established by the Committee and Trustee for the Plan, or through the internet in the
manner prescribed by the Committee. Investment in certain options may be limited to retention and maintenance of prior contributions invested in such options, with no further investment of contributions therein being permitted, as more particularly
provided below. The Company may establish, modify and change the investment options made available to Participants from time to time, with such modifications and changes to be made by written action of the Chief Executive Officer of the Company and
the Committee, or as otherwise determined by the Company. A Participant may also change his investment direction and direct sales from time to time to the extent permitted and authorized in subparagraphs 1.B. and D., and paragraph 3. below.

 B. Qualified Default Investment of Participant Account 
  

	 	1.	Notwithstanding the foregoing, if a Participant fails or refuses to direct the investment of all or any part of his/her Participant Account the amount of the Account that is not
directed to be invested by the Participant shall be invested in a Qualified Default Investment Alternative that is determined by the Company and the Committee in accordance with paragraph C of this Article IX, below, and otherwise in accordance with
the Plan. 

  

	 	2.	With respect to the investment of assets in a Participant Account pursuant to this paragraph, the following requirements and conditions shall apply: 

  

	 	(a)	The assets shall be invested in Qualified Default Investment Alternative as defined herein. 

  

	 	(b)	The Participant or beneficiary on whose behalf the investment is made shall have had an opportunity to direct investment of assets of his/her Participant Account but did not direct
the investment of the assets. 

  

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	 	(c)	The Participant or beneficiary on whose behalf an investment is made in such a Qualified Default Investment Alternative shall be furnished with a notice that satisfies the
requirements set forth below. 

  

	 	(d)	Any material provided to the Plan relating to a Participant’s or beneficiary’s investment in a Qualified Default Investment Alternative shall be provided to the
Participant or beneficiary. 

  

	 	(e)	Any Participant of beneficiary on whose behalf assets are invested in a Qualified Default Investment Alternative may, consistent with the terms of the Plan (but not less frequently
than once within any three (3) month period) transfer, in whole or in part, such assets to any other investment option or alternative available under the Plan without financial penalty. 

  

	 	(f)	The Plan shall otherwise offer a broad range of investment alternatives within the meaning of 29 CFR 2550.404c-1(b)(3). 

  

	 	3.	For investment of a Participant Account pursuant to this paragraph the Participant shall be provided written notice of Qualified Default Investment Alternative investment of his/her
Participant Account in a manner determined to be understood by the average Plan Participant and that contains a description of the circumstances under which assets of the individual account of a Participant and beneficiary may be invested on behalf
of the Participant or beneficiary in a Qualified Default Investment Alternative; a description of the Qualified Default Investment Alternative under the Plan, including a description of the investment objectives, risk and return characteristics, and
fees and expenses attendant to the investment alternative; a description of the right of Participants and beneficiaries on whose behalf assets are invested in a Qualified Default Investment Alternative to direct the investment of those assets to any
other investment option under the Plan, without financial penalty; and an explanation of where the Participants and beneficiaries can obtain investment information concerning the other investment options under the Plan.”

  

	 	4.	For purposes of the foregoing and the Plan, the term “Qualified Default Investment Alternative” shall mean an investment option established and maintained under the Plan
that meets the requirements and conditions for treatment as a qualified default investment alternative under 29 CFR §2550.404c-5. 

 C.
Investment Options. The investment options existing and recognized under the Plan and Trust, shall be established as hereinabove provided, and regularly listed and described to Participants by written information and memoranda, and by
electronic media, furnished by and at the direction of the Committee from time to time. The investment options shall include ONEOK, Inc. Common Stock and other investments determined by the Company and the Committee hereunder. It is intended that
the investment options shall provide Participants investment alternatives which will provide a Participant with a reasonable opportunity to materially affect the potential return on amounts in his/her Plan account and the degree of risk to 

  

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which such amounts are subject, and to choose from at least three (3) investment options, each of which is diversified, has materially different risk
and return characteristics, and which in the aggregate enable the Participant to achieve investment direction of risk and return characteristics within the range normally appropriate for such Participant, and when combined with investments in other
alternatives will tend to allow reasonable diversification so as to minimize risk of losses, taking into account all circumstances. 
 A Participant may, by
written, telephone voice response or internet direction to the Committee, and in turn to the Trustee, as provided above, direct that his/her deposits and account, the Company’s contributions and any other cash be deposited in such investment
options. 
 A Participant who was a Participant in the Prior ONEOK, Inc. Thrift Plan or the KGS 401(k) Thrift Plan may retain in his/her account stock or
securities which were his/her prior directed investments in such Plans to the extent, and as the Committee may prescribe by written memoranda and instructions pertaining to the Plan. The Committee may prescribe the manner in which dividends or other
amounts received from such retained investments may be invested, and may limit or prescribe additional investment or reinvestment in such stock or securities. 
 Notwithstanding any other provisions herein, the right of Participants to direct the purchase, sale or transfer of ONEOK, Inc. Common Stock for their Plan Accounts may be limited, suspended and restricted from time to time, and for such
periods of time as the Committee, in its discretion, determines to be necessary and appropriate for administration of the Plan and Trust, including, without limitation, for the purpose of determining the amount and timing of ESOP Dividend
Distributions and ESOP Dividend Distribution/Additional Deferral Contributions under the Plan. The Committee may direct such limitations, suspensions and restrictions to be made, and cause Participants and the Trustee to be given notice thereof, in
the manner it determines reasonable and practical in the circumstances. 
 The investments selected and directed by Participants may increase or decrease in
value due to changes and fluctuations in market conditions and other circumstances, and the Company, Committee and Trustee do not warrant or guarantee, by or under the Plan or otherwise, the value of any security or other investment directed by a
Participant hereunder. 
 Notwithstanding the foregoing, the investment by a Participant who is a Section 16 Person shall be subject to the limitations
and restrictions and other provisions of paragraph 8. of this Article IX, below, with respect to any Discretionary Transactions involving the investment of his/her deposits, the Company’s contributions and any other cash attributable to his/her
account. 
 D. Change in Participant’s Investment Direction. Any direction by a Participant that available funds in his/her account shall be
invested under a particular investment option shall be deemed a continuing direction until changed by the Participant. A Participant may, by written direction to the Committee which shall in turn direct the Trustee in form prescribed by the
Committee, by telephone voice response system or internet direction in the manner prescribed by the Committee, or by such other means as may be authorized by the Committee, cancel or change any such investment direction from time to time; provided,
that a Participant who is a Section 16 Person shall be subject to the limitations, restrictions and other provisions of paragraph 8. of this Article IX, below, with respect to such Participant’s direction of investments that are
Discretionary Transactions. 
  

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 E. Sale of Investments at Participant Direction. A Participant may (i) by written direction in form
prescribed by the Committee and countersigned by the authorized representative thereof, which countersignature shall be for the sole purpose of identification and authentication of good standing of the Participant, or (ii) by telephone voice
response system or internet, as authorized by the Committee, direct the Committee and the Trustee to sell or turn in for redemption, as may be appropriate, any security purchased at his/her direction; he/she may similarly direct the investment of
the proceeds of any such sale or redemption, with or without the addition of other available cash then in his/her account, under any one or more of the investments options currently in effect under the Plan for which additional investment of
contributions and cash may be directed; provided, that a Participant who is a Section 16 Person shall be subject to the limitations, restrictions and other provisions of paragraph 8. of this Article IX, below, with respect to the direction of
the sale or redemption transactions involving any security issued by the Company that are Discretionary Transactions, as defined by paragraph 8 of this Article IX below. 
 F. ESOP Diversification of Investments. It is intended that the Participant investment options and investment direction provisions stated above in this Article IX shall be administered in the manner which will
satisfy the investment diversification requirements of Code Section 401(a)(28) (or corresponding section of any future federal tax code) as to the portion of the Plan which constitutes an Employee Stock Ownership Plan, and in accordance with
such requirements, and notwithstanding anything otherwise provided in the Plan with respect to that portion of the Plan which constitutes an Employee Stock Ownership Plan, each Qualified Participant may elect within ninety (90) days after the
close of each Plan Year in the Qualified Election Period to direct the Plan and the Trustee as to the investment of at least twenty-five percent (25%) of such Participant’s Account in the Plan which is invested in Company securities (to
the extent such portion exceeds the amount to which a prior election under this paragraph applies). In the case of the election year in which the Participant can make his/her last election, the preceding sentence shall be applied by substituting
“fifty percent (50%)” for “twenty-five percent (25%).” The Plan shall offer at least three (3) investment options (not inconsistent with Treasury regulations published under Code Section 401(a)(28) (or corresponding
section of any future federal tax code) to each Qualified Participant making such an election and within ninety (90) days after the period during which the election may be made, the Plan shall invest the portion of the Participant’s
Account covered by the election in accordance with the election. For purposes of this paragraph, the term “Qualified Participant” means any Employee who is a Participant in the Plan who on and after January 10, 1997, completes at
least ten (10) years of participation under the Employee Stock Ownership Plan portion of the Plan and who has attained age fifty-five (55); and the term “Qualified Election Period” shall mean the 6-Plan-Year period beginning with the
later of (i) the first Plan Year in which an individual first became a Qualified Participant, or (ii) the first Plan Year beginning after December 31, 1986. The applicable portions of a Participant’s Account to which such
elections shall apply shall be determined based upon the price of Company securities on the New York Stock Exchange applied on a uniform and consistent basis, and with respect to any Company securities which are not readily tradable on an
established securities market with respect to activities carried on by the Plan all such valuations shall be by an independent appraiser, which means any appraiser meeting requirements similar to the requirements of the Treasury regulations
prescribed under Code Section 170(a)(1). 
  

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 2. Time of Action by Trustee on Investments 
 The Trustee will comply with the directions of a Participant with respect to investment, sale and reinvestment as soon as practicable after receipt of such direction if they are given and received in accordance with
one of the foregoing authorized means of communicating such directions; provided, however, that in the case of directions to purchase securities, the Trustee will not comply therewith until a means to make such purchase has been adequately provided
in respect to the Participant’s account. With respect to purchases of Common Stock from the Company, the Trustee shall purchase such securities on the day or days of each month on which the Trustee receives the contributions from the
Participants and the Company or receives dividends on the Common Stock held by the Trustee. The Committee may establish such rules, regulations and procedures as it determines, in its discretion, to be necessary and appropriate for administering
Participant directions of investment under the Plan. The Trustee, in its discretion, may limit the daily volume of its purchases or sales of a security to the extent that such action is deemed by it to be in the best interest of the Participants
directing such purchases or sales. 
 3. Participant Rights as to Options, Rights, and Warrants 
 In the event that any option, rights, or warrants shall be granted or issued with respect to a security held by the Trustee under the Plan, the Trustee, to the extent
possible, shall give to the Participant in whose account such security is held a reasonable opportunity (which in any event shall not extend beyond five days prior to the date of expiration of the options, rights, or warrants) to direct the Trustee
to exercise such options, rights, or warrants, and if any cash shall be required in connection with such exercise, such Participant shall, simultaneously with his/her direction to the Trustee, make available to the Trustee the necessary funds. Such
funds may be made available to the Trustee by payment thereof in cash or by written direction to the Trustee in form prescribed by the Committee to use cash held by the Trustee in the Participant’s Account or obtained from the sale of any
security in such account; provided, however, that the total of any such cash Payment and the amount of current monthly contribution shall not exceed the contribution and deposit limitations set forth in Articles III and IV. Cash payments made by a
Participant to the Trustee in connection with the exercise of any such options, rights, or warrants shall constitute an additional deposit in the Participant’s Account for all purposes of the Plan except the Company’s contributions under
paragraph 1. of Article VII and except that, for a period of twelve (12) months after making any such payment, the Participant shall have the right, by written request to the Trustee in form prescribed by the Committee, to receive payment from
the Trustee out of any cash available in the Participant’s Account an amount equal to the cash so paid, and such payment to the Participant shall not constitute a withdrawal within the meaning of Article XII or any other Article of the Plan.
Any securities acquired as the result of the exercise of any such options, rights, or warrants shall be added to the Participant’s Account. If a Participant shall not, within the time designated by the Trustee, direct the Trustee to exercise
any such option, right, or warrant and make available to the Trustee any necessary funds, the Trustee shall sell such option, right, or warrant in the open market, if there be any market thereof. The cash proceeds from the sale of any options,
rights, or warrants shall be credited to the Participant’s Account. 
  

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 Provided, that a Participant who is a Section 16 Person shall be subject to the limitations, restrictions and other
provisions of paragraph 8. of this Article IX, below, with respect to any options, rights or warrants granted or issued with respect to any security held by the Trustee of the Plan that is a security issued by the Company, if the exercise or other
action by the Participant pursuant to this paragraph 3. is a Discretionary Transaction, as defined in such paragraph 8. 
 4. Redemption of
Nontransferable Securities 
 In the case of the redemption of any nontransferable security or on the maturity thereof, the Participant in whose account
such security is held shall take such steps as the Trustee may prescribe in order to effect the redemption or collection thereof by the Trustee. 
 5.
Manner of Holding Cash and Securities 
 All cash and securities in Participants’ Accounts shall, until disposed of pursuant to the provisions of the
Plan, be held in the possession of the Trustee. Transferable securities may be registered in the name of the Trustee or in the name of its nominee. Nontransferable securities shall be issued in such name or names as the Trustee may elect, subject to
any applicable laws or regulations at the time in effect with respect thereto. In the sole discretion of the Trustee, investments in a particular security to be held in the accounts of more than one (1) Participant may be represented by a
single stock certificate or a single bond, as the case may be. 
 6. Voting of Shares 
 Shares of the voting stock of the Company held by the Trustee in the account of a Participant under the Plan will be voted or consents for action with respect thereto will be granted by the Trustee or other registered
owner thereof only in accordance with written instructions given to the Trustee by the Participant, except that the Trustee, in its discretion, may vote or direct the registered owner to vote or may consent or direct the registered owner to consent
to action being taken with respect to any such stock if the Trustee has not received written instructions from the Participant in whose account such shares are held at least five (5) days prior to the date of the meeting at which such vote is
to be taken or the last date that a consent of action may be given. Notice of any such meeting or consent request shall be given by the Committee to the Participant and a request for written instructions shall be made by the Committee to be directed
to the Trustee at such time and in such form as may be provided by rules and regulations adopted by the Committee. 
 This paragraph and all pertinent
provisions of the Plan and Trust shall be applied and interpreted in all respects so as to meet the requirements of Code Section 409(e) (or corresponding section of any future federal tax code) so that each Participant or beneficiary in the
Plan is entitled to direct the Plan and Trustee as to the manner in which stock and securities of the Company which are entitled to vote and are allocated to the Participant Account of such Participant or beneficiary are to be voted. 
 This paragraph shall also apply to the voting of any voting stock of Western Resources, Inc., in the account of any Participant. 
  

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 7. Tender Offers 
 Notwithstanding any other provisions of this Plan, the provisions of this paragraph 7. shall govern the tendering of shares of Common Stock of the Company held in this Plan. 
 A. Upon commencement of a tender offer for any securities that are Common Stock of the Company, the Company shall notify each Participant of such tender offer and utilize its best efforts to timely distribute or cause
to be distributed to the Participant such information as is distributed to shareholders of the Company in connection with such tender offer, and shall provide a means by which the Participant can instruct the Trustee whether or not to tender the
shares of Common Stock of the Company allocated to such Participant’s account. The Company shall provide the Trustee with a copy of any materials provided to Participants. 
 B. Each Participant shall have the right to instruct the Trustee as to the manner in which the Trustee is to respond to the tender offer for any and all of the shares of Common Stock of the Company allocated to such
Participant’s account. The Trustee shall respond to the tender offer with respect to shares of Common Stock of the Company as instructed by the Participant. The Trustee shall not tender any stock allocated to a Participant’s account for
which the Trustee has received no instructions from the Participant. 
 C. The Trustee shall tender that number of unallocated shares of Common Stock of the
Company which is determined by multiplying the total number of unallocated shares by a fraction of which the numerator is the number of shares of Common Stock of the Company allocated to Participants’ accounts for which the Trustee has received
instructions from Participants to tender (and such instructions have not been withdrawn as of the date of determination) and the denominator is the total number of shares of Common Stock of the Company allocated to Participants’ accounts.

 D. A Participant who has directed the Trustee to tender shares of Common Stock of the Company allocated to such Participant’s account may, at any
time prior to the tender offer withdrawal date, instruct the Trustee to withdraw, and the Trustee shall withdraw such shares of Common Stock from the tender offer prior to the withdrawal deadline. 
 Prior to such withdrawal deadline, if unallocated shares of Common Stock of the Company have already been tendered, the Trustee shall redetermine the number of shares of
Common Stock of the Company which would be tendered under paragraph 7.C. hereunder as if the date of such withdrawal were the date of determination, and withdraw the number of unallocated shares necessary to reduce the number of unallocated shares
tendered to the amount so redetermined. A Participant shall not be limited as to the number of instructions to tender or withdraw which he/she may give to the Trustee. 
 E. The Trustee shall credit the proceeds received in exchange for tendered shares of Common Stock of the Company to the account from which the tendered stock originated. Notwithstanding paragraph 3. of this Article
IX, each Participant to whose account amounts have been allocated pursuant to this subparagraph E. shall have the right to direct the Trustee to immediately invest such amounts in any of the Options then available for investment under the Plan.

  

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 F. Notwithstanding the foregoing, a Participant who is a Section 16 Person shall be subject to the limitations,
restrictions and other provisions of paragraph 8. of this Article IX, below, with respect to any tender of shares of Common Stock allocated to such Participant’s account that is a Discretionary Transaction, as defined in such paragraph 8.

 8. Section 16 Person Limitations; Discretionary Transactions 
 A Section 16 Person shall be allowed to direct or have a Discretionary Transaction as defined below, effected under the Plan only if such Discretionary Transaction is effected pursuant to an election made at
least six (6) months following the date of the most recent election, with respect to any employee benefit plan of the Company, that effected a Discretionary Transaction that was: 
  

	 	(1)	an acquisition, if the current proposed Discretionary Transaction would be a disposition; or 

  

	 	(2)	a disposition, if the current proposed Discretionary Transaction would be an acquisition. 

 For purposes of this Article IX, the term “Discretionary Transaction” shall mean a transaction involving equity securities of the Company pursuant to an employee benefit plan of the Company that: 

 

	 	(i)	is at the volition of the Participant; 

  

	 	(ii)	is not made in connection with the Participant’s death, disability, retirement or termination of employment; 

  

	 	(iii)	is not required to be made available to the Participant pursuant to a provision of the Internal Revenue Code; and 

  

	 	(iv)	results in either an intra-plan transfer involving a Company equity securities fund under the Plan, or a cash distribution funded by a volitional disposition of a Company equity
security. 

 Except to the extent otherwise expressly stated herein, all terms and provisions contained in this paragraph 8. are intended to
have the same meaning and effect as when used in Rule 16b-3 of the Securities and Exchange Commission promulgated under the Securities Exchange Act of 1934, as amended (“SEC Rule 16b-3”). Transactions under the Plan by or with respect to
Section 16 Persons are intended to qualify for exemptions allowable under SEC Rule 16b-3, unless the Committee specifically determines otherwise; and the provisions of the Plan shall be administered, interpreted and construed to carry out such
intention, and any provision that cannot be so administered, interpreted and construed shall, to the extent permissible under the Code and the Employee Retirement Income Security Act of 1974, as amended, be disregarded. 
 9. Employee Stock Ownership Plan (ESOP) 
 The portion of this Plan and
the Trust under which investment in ONEOK, Inc. Common Stock is directed by Participants pursuant to paragraph 1. of this Article IX, above, is intended to be an 

  

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Employee Stock Ownership Plan designed to invest primarily in Qualifying Employer Securities, including all shares of ONEOK, Inc. Common Stock held by the
Plan at the time such portion of the Plan and Trust is first made an Employee Stock Ownership Plan by amendment of the Plan. The investment in such stock shall be made and administered in accordance with the provisions of Code
Section 4975(e)(7), or succeeding provisions of the federal tax law, the Treasury regulations thereunder, and the provisions of the Plan more specifically providing for such Employee Stock Ownership Plan, including without limitation, the
provisions of this paragraph 9., stated below; paragraph 3. of Article III, providing for deemed deferrals equal to ESOP Dividends paid and distributed; paragraph 1.E. of this Article IX providing for diversification of investments; paragraph 6. of
this Article IX providing for the voting of ONEOK, Inc. Common Stock; paragraph 2. of Article X providing for payment and distribution of ESOP Dividends on ONEOK, Inc. Common Stock; paragraph 5. of Article XI providing for the time of distribution
of ONEOK, Inc. Common Stock from the Plan; and paragraph 12. of Article XI providing for Participant rights to distribution of ONEOK, Inc. Common Stock. 
 It is intended that the Employee Stock Ownership Plan provided for herein shall not acquire any Plan assets or Company securities by use of an exempt loan under Code Section 4975(d)(3), or otherwise, but notwithstanding the foregoing,
if and to the extent any such exempt loan is ever made to or received by the Plan, then any such loan shall conform in all respects to the requirements of Code Section 4975(e) and the Treasury regulations thereunder, and must be primarily for
the benefit of Participants and their beneficiaries, and shall comply with the following terms and conditions: (1) The interest rate respecting such loan shall not exceed a reasonable rate of interest; and the Trustee shall consider all
relevant factors in determining a reasonable rate of interest, including the amount and duration of the loan, the security and guarantee (if any) involved, the credit standing of the ESOP and the Company (if and to the extent that the Company acts
as guarantor), and the interest rate prevailing for comparable loans; and upon due consideration of the foregoing factors, a variable interest rate may be reasonable; (2) At the time that such loan is made or entered into, the interest rate and
the price of securities to be acquired should not be such that Plan assets might be dissipated; (3) The terms of such loan, whether or not between independent parties, must be at such time at least as favorable to the Trust as the terms of a
comparable loan resulting from arm’s-length negotiations between independent parties; (4) The proceeds of such loan must be used within a reasonable time after their receipt by the Trust only to acquire ONEOK, Inc. Common Stock, to repay
such loan, or to repay a prior loan to the Trust; (5) Such loan must be without recourse against the Trust; the only assets of the Trust that may be given as collateral on such loan are shares of ONEOK, Inc. Common Stock acquired therewith; no
person entitled to payment under such loan shall have any right to assets of the Trust other than collateral given for such loan, cash contributions of the Company made to meet the obligations of the Trust under such loan, and earnings attributable
to such collateral and the investment of such contributions; the payments made with respect to such loan by the Trust during a Plan Year must not exceed an amount equal to the sum of such contributions and earnings received during or prior to the
year less such payments in prior years; such contributions and earnings must be accounted for separately on the books of account of the Trust, until the loan is repaid; (6) In the event of default on such loan, the value of Plan assets
transferred in satisfaction of the loan must not exceed the amount of default; (7) Shares of ONEOK, Inc. Common Stock used as collateral for such loan shall be released from the encumbrance thereof, in accordance with the provisions stated in
this paragraph 9., below; and (8) Except as otherwise provided hereinbelow under the terms of this Plan and Trust, or as 

  

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otherwise required by applicable law, no ONEOK, Inc. Common Stock or other Company security acquired with the proceeds of such loan shall be subject to a
put, call or other option, or buy-sell or similar arrangement while held by and when distributed from the Trust, whether or not the Trust is then an employee stock ownership plan as described in Code Section 4975(e)(7). 
 All shares of ONEOK, Inc. Common Stock acquired by the Trust and pledged as collateral on any such loan shall be added to and maintained in a suspense account. Said
shares shall be released from such encumbrance as follows: (1) For each Plan Year during the duration of the loan, the number of shares of ONEOK, Inc. Common Stock released shall equal the number of encumbered shares held immediately before
release by a fraction. The numerator of the fraction is the amount of principal and interest paid to the lender by the Trust for the year, and the denominator of the fraction is the sum of the numerator plus the principal and interest to be paid for
all future years; (2) For purposes of the foregoing determination, the number of future years under the loan must be definitely ascertainable, and shall be determined without taking into account any possible extensions or renewal periods. If
the interest rate under the loan is variable, the interest to be paid in future years shall be computed by using the interest rate applicable as of the end of the Plan Year; and (3) To the extent of the foregoing release from encumbrance,
shares shall be withdrawn from the suspense account, and nonmonetary units representing the Participants’ interest therein shall be allocated, for each Plan Year. The shares of ONEOK, Inc. Common Stock held in the above-described suspense
account shall be voted by the Trustee. With respect to shares released from encumbrance, said shares shall be voted as provided in paragraph 6. of this Article IX of the Plan. 
 To the extent any Company security is acquired by the Plan with the proceeds of an exempt loan, which security is not publicly traded when distributed or is subject to a trading limitation when distributed, then such
security shall be subject to a put option exercisable only by Participant (“Participant” meaning for purposes of these provisions, the Participant and beneficiaries of the Participant), such Participant’s donees, or by a person
(including an estate or its distributee) to whom such security passes by reason of such Participant’s death. Such put option must permit the Participant to put such security to the Company, and under no circumstances may the put option bind the
Plan, except that such put option may grant the Plan an option to assume the rights and obligations of the Company at the time that the put option is exercised; the put option must be exercisable at least during a fifteen (15)-month period which
begins on the date the security subject to the put option is distributed by the Plan, except that if the security is publicly traded without restriction when distributed but ceases to be so traded within fifteen (15) months after the
distribution, the Company shall notify each security holder in writing within ten (10) days after the security ceases to be so traded that for the remainder of the fifteen (15)-month period the security is subject to a put option. Such
notification shall inform the individual distributees of the terms of the put options that they are to hold. Any such put option is to be exercised by the holder notifying the Company in writing that the put option is being exercised. The period
during which such a put option is exercisable shall not include any time when the distributee is unable to exercise it because the party bound by the put option is prohibited from honoring it by applicable federal and state law. The price at which
any such put option must be exercisable is the value of the security, determined under Section 54.4795-11(d)(5) of the Treasury regulations. The terms and provisions for payment under any such put option must be reasonable terms within the
meaning of Section 54.4975-7(b)(12)(iv) of the Treasury regulations. The payment under any such put option shall not be restricted by the provisions of a loan or any other arrangement, including the Company’s certificate of incorporation,
unless so required by applicable state law. 
  

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 10. Investment Diversification 
 The investment options offered to Participants under the Plan shall be established, maintained and administered in accordance with the provisions of Code Section 401(a)(35) that are applicable to the Plan.

 11. No Guarantee or Indemnity 
 Nothing contained in
this Plan shall be construed as a guarantee by the Company or by the Trustee of the value of any security in which funds held by the Trustee under the Plan are invested or as an indemnity against any loss resulting from such investments. 

 

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 ARTICLE X. 
 CREDITS AND CHARGES TO A PARTICIPANT’S ACCOUNT 
 PARAGRAPH 
 1. General Charges and Credits 
 All interest, dividends, and other
income received by the Trustee in respect to assets included in a Participant’s Account, and all gains or losses upon the sale of securities in the Participant’s Account, as determined by the Trustee, shall be credited or charged, as the
case may be, to the Participant’s Account. 
 2. ESOP Dividend Distributions 
 A. The Committee may cause ESOP Dividends on ONEOK, Inc. Common Stock in a Participant’s Account to be paid in cash to the Participant (or his/her beneficiaries), and cause the Trustee to distribute in cash to a
Participant (or his/her beneficiaries) ESOP Dividends paid in cash to the Trust on ONEOK, Inc. Common Stock in such Participant’s Account. Such payment and distribution in cash to a Participant (or his/her beneficiaries) shall be in the amount
determined pursuant to subparagraphs B., C., and D., below. The payment and distribution of ESOP Dividends on ONEOK, Inc. Common Stock in the Account of a retired Employee or former Employee may be made as provided in subparagraph E., below. The
distribution of such ESOP Dividends from the Trust shall be made in cash to the Participant (or his/her beneficiaries) not later than ninety (90) days after the close of the Plan Year in which such dividends are paid to the Trust of the Plan.

 B. Unless a Participant who is an Employee elects otherwise pursuant to subparagraph C., below, the amount of the ESOP Dividend Distribution, which shall
be paid and distributed in cash to a Participant who is an Employee pursuant to this paragraph 2. shall be the amount of ESOP Dividends paid on ONEOK, Inc. Common Stock in such Participant’s Account that is equal to such Participant’s ESOP
Dividend/401(k) Deferrable Amount for the year. 
 C. In lieu of receiving payment and distribution of ESOP Dividends in cash pursuant to subparagraph B.,
above, a Participant who is an Employee may elect to receive payment and distribution in cash of either (i) one hundred percent (100%) of the Participant’s ESOP Dividends, or (ii) fifty percent (50%) of the
Participant’s ESOP Dividends. If a Participant elects to receive one hundred percent (100%) of his/her ESOP Dividends in cash, no ESOP Dividend Distribution/Additional Deferral Contribution shall be made with respect to such payment and
distribution under paragraph 3. of Article III, above; and if a Participant elects to receive payment and distribution of fifty percent (50%) of his/her ESOP Dividends in cash, no ESOP Dividend Distribution/Additional Deferral Contribution
shall be made with respect to such amount under paragraph 3. of Article III, above. 
 D. If a Participant who is an Employee elects to receive payment and
distribution of fifty percent (50%) of his/her ESOP Dividends under subparagraph C., above, then an additional payment and distribution in cash of and from the other fifty percent (50%) of such Participant’s ESOP Dividends shall be
made to such Participant in an amount equivalent to the amount, if any, 

  

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of such Participant’s ESOP Dividend/401(k) Deferrable Amount, and an ESOP Dividend Distribution/Additional Deferral Contribution equal to such
additional payment and distribution of ESOP Dividends shall be made to the extent provided for in paragraph 3. of Article III, above. 
 E. Each individual
who is a retired Employee, or a former Employee who has separated from service with the Company, may elect in writing to receive and take a payment and distribution in cash of either (i) one hundred percent (100%) of his/her ESOP
Dividends, or (ii) fifty percent (50%) of his/her ESOP Dividends, notwithstanding that such individual shall have no right to elect any deferral of Compensation with respect to the dividend distribution to be received. 
 F. The elections provided to a Participant who is an Employee under the foregoing provisions of subparagraph C., above, are intended to allow such Participant to elect
to receive payment and distribution of ESOP Dividends from the Company and/or the Trust so as to increase the dollar amount of cash he/she receives in the form of ESOP Dividends by the percentage elected, without any corresponding offset of such
amount by any ESOP Dividend Distribution/401(k) Deferral Contribution or Reduction in Compensation under the Plan. 
 G. It is also intended that unless a
Participant elects otherwise, a corresponding ESOP Dividend Distribution/Additional Deferral Contribution will be made with respect to ESOP Dividends paid and distributed in cash to a Participant under subparagraphs B. or D., above, to the extent
provided therein and in paragraph 3. of Article III. 
 H. Notwithstanding the foregoing, the payment and distribution in cash of ESOP Dividends with respect
to ONEOK, Inc. Common Stock in a Participant Account may be limited in a uniform and consistent manner, as determined by the Committee, so as to maximize the application of the limitations on elective deferrals and contributions contained in Code
Sections 402(g) and 415 to a Participant’s regularly designated elective deferrals of Compensation, and Company Matching Contributions thereon during a Plan Year, before application of such limitations with respect to any ESOP Dividend
Distribution/Additional Deferral Contributions made by and for Participant arising during the Plan Year. 
 I. The payment and distribution of ESOP Dividends
in cash pursuant to this paragraph 2. and the making of ESOP Dividend Distribution/ Additional Deferral Contributions shall be administered by the Company and the Trustee, as determined, prescribed and found mutually acceptable by the Committee and
the Trustee. Any amount of ESOP Dividends not so paid and distributed in cash to a Participant, retired Employee or former Employee under the foregoing provisions shall be credited to and remain in the Participant Account and shall not thereafter be
distributable under the provisions of this paragraph, unless otherwise directed and approved by the Committee. 
 J. The elections made by Participants,
retired Employees and former Employees to receive distributions of ESOP Dividends hereunder shall be made in writing at the time and in the form prescribed by the Committee. 
  

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 3. Calculation of Charges and Credits to Participant Accounts 
 Except as otherwise directed by the Committee, within its discretion, the cost to be charged to a Participant’s Account of any security purchased by the Trustee
according to the Participant’s direction shall be the cost of such security at the closing market price on the date such purchase is directed; and the proceeds credited to a Participant’s Account upon the sale or redemption of any
securities shall be the actual proceeds thereof. 
 4. Commissions, Taxes, and Charges on Security Purchases and Sales 
 Brokerage commissions, transfer taxes, and other charges and expenses in connection with the purchase or sale of securities shall be added to the cost of such securities
or deducted from the proceeds thereof, as the case may be. 
 5. Investment Management Fees 
 Investment management fees charged or incurred by any person, firm, or entity for the management of investments made in or by any fund in connection with a
Participant’s investment in particular investment options shall be charged against the Participant’s Account as the Committee may prescribe and direct from time to time. 
 6. Allocation of Plan Administrative Expenses 
 The Committee may direct and cause all or part of reasonable Plan
administrative expenses to be allocated and charged to the Plan accounts of current and former employees and their beneficiaries on a pro rata or other reasonable basis; and such allocation may from time to time be made by allocating all or part of
certain reasonable Plan expenses to the Plan accounts of former employees on pro rata or other reasonable basis without similarly allocating and charging such expenses to the Plan accounts of current employees. Any allocation of such expenses to the
Plan accounts of current and former employees pursuant to this paragraph may be made on a pro rata or other reasonable basis as determined and set forth in written rules or procedures adopted by the Committee which shall be consistently applied in a
manner that complies with the requirements of Code Section 411(a)(11), Title I of ERISA, and applicable guidelines on such allocation published by the Internal Revenue Service and Department of Labor, including, without limitation, Revenue
Ruling 2004-10 and Department of Labor Field Assistance Bulletin (FAB) 2003-3. 
 7. Calculation of Credits for Redemption 
 Upon the redemption or maturity or any nontransferable Government bonds included in a Participant’s Account, the difference between the cost thereof and the amount
received upon such redemption or maturity shall be credited to the Participant’s Account as income. 
 8. Taxes 
 Taxes, if any, on any assets held by the Trustee or income therefrom which are payable by the Trustee shall be charged against the Participants’ Accounts as the
Trustee shall determine. 
  

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 ARTICLE XI. 
 VESTING AND LIQUIDATION OF ACCOUNTS 
 PARAGRAPH 
 1. Vesting of Participant and Company Contributions 
 A
Participant’s contributions under Article IV and his/her rights in the accrued benefit derived therefrom are nonforfeitable. The Company’s 401(k) Contributions and Matching Contributions for the account of a Participant, and any income and
earnings therefrom and accretions thereon, shall become vested in such Participant immediately upon payment of such contributions to the Trustee and receipt by the Trustee of such income, earnings and accretions, and (subject to subsequent loss
through decline in value of investments) the Participant may not thereafter be deprived of such funds under any provision of the Plan. All accounts of a Participant under the Plan shall be nonforfeitable. The vesting of benefits under the Plan for a
Participant shall be provided in accordance with the provisions of USERRA contained in Code Section 414(u), or corresponding provision of any future tax code. 
 2. Withdrawals 
 The Company’s contributions and Participant After-Tax Deposits credited to the account of a Participant, and the income
and earnings on and accretions to a Participant’s account whether derived from the Participant’s deposits or the Company’s contributions or from any other funds at any time in said account, may be withdrawn by or paid to the
Participant upon request by the Participant as provided for in Article XII or upon complete liquidation of the Participant’s account as provided for in paragraphs 3., 7., and 8. of this Article XI, or upon termination of the Plan as provided in
paragraph 10. of Article XII or upon adverse modification of the Plan as provided in paragraph 3. of Article XXIV or upon termination of the Trust as provided in paragraph 5. of Article XXIV. 
 3. Distribution of Participant Accounts 
 Except as provided in
paragraph 6. of this Article XI, when a Participant dies or his/her employment with the Company is terminated by retirement or for any other reason (except transfer of employment to a subsidiary of the Company participating in the Plan), the account
of such Participant under the Plan will be completely liquidated, and the entire balance of the account will be distributed in a single payment to the Participant, or his/her surviving spouse, beneficiaries or legatees, or heirs, respectively,
whichever is entitled thereto. The determination of the distributee or distributees in the event of a Participant’s death shall be made in accordance with Article XIII of the Plan. Every distribution on death of a Participant shall be an
immediate distribution by a single payment of the entire account. It is intended by this paragraph 3. that distribution of the entire balance in the account of a Participant is to be made as soon as reasonably practicable after the death of a
Participant, or termination of employment by retirement or for any other reason and in no event shall distribution by reason of the Participant’s death be made later than five (5) years after the death of the Participant; provided, that if
the Participant’s account exceeds five thousand dollars ($5,000), it shall not be immediately 

  

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distributed until the Participant attains age sixty-five (65) without the written consent of the Participant; but no consent to immediate distribution
shall be required in the event of the death of a Participant, and such requirement of consent shall not give a Participant a right to any form or method of payment of his/her account, and his/her account shall be maintained and distributed
thereafter only in accordance with the rights to, and sequence of requested distribution stated in paragraphs 7. and 9. of this Article XI, below. Any such undistributed balance of the Participant’s account shall be distributed upon his/her
attaining age sixty-five (65); provided that a Participant, who has separated from employment with the Company by retirement or for any reason other than death, may make the affirmative election to defer distribution of his/her account beyond age
sixty-five (65) pursuant to paragraph 6. of this Article XI, below. 
 4. Time of Distribution 
 Unless the Participant elects otherwise under paragraph 6. of this Article XI, notwithstanding any other provisions of the Plan, the payment of benefits under the Plan to
the Participant will begin not later than the sixtieth (60th) day after the latest of the close of the Plan Year in which: 
 A. the Participant attains
the age sixty-five (65), 
 B. occurs the tenth (10th) anniversary of the year in which the Participant commenced participation in the Plan, or

 C. the Participant terminates employment with the Company. 
 5. ESOP Stock Distributions 
 Notwithstanding any other provisions of the Plan, the ONEOK, Inc. Common Stock in a Participant’s Account
to which the Employee Stock Ownership Plan provisions of the Plan are applicable (hereinafter referred to as “ESOP Account Balance”), shall be distributed on the earlier of (i) time when distribution would otherwise be made under the
Plan, or (ii) if the Participant so elects, will be distributed commencing not later than one (1) year after the close of the Plan Year (I) in which the Participant separates from service by reason of attainment of normal retirement
age under the Plan, disability or death, or (II) which is the fifth (5th) Plan Year in which the Participant otherwise separates from service, except that this clause (II) shall not apply if the Participant is reemployed by the Company before
distribution is required to begin under this clause (II). If distribution of a Participant’s ESOP Account Balance is ever required to be made under clause (ii) in the preceding sentence, then in such case, unless the Participant elects
otherwise, the distribution of the Participant’s ESOP Account Balance will be in substantially equal periodic payments (not less frequently than annually) over a period not longer than the greater of five (5) years, or in the case of a
Participant with an Account balance in excess of Five Hundred Thousand Dollars ($500,000), five (5) years plus one (1) additional year (but not more than five (5) additional years) for each One Hundred Thousand Dollars ($100,000) or
fraction thereof by which such balance exceeds Five Hundred Thousand Dollars ($500,000), as such dollar amounts are adjusted for cost-of-living increases pursuant to Code Sections 409(o)(2) and 415(d). The foregoing provisions of this paragraph 5
are intended to provide for distribution of a Participant’s ESOP Account Balance at least as soon as provided in Code Section 409(o) only if such form and timing of distribution would be earlier than otherwise generally provided by the
Plan. 
  

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 6. Participant Election to Defer Distribution 
 A Participant, whose employment with the Company is terminated by retirement or for any reason other than death, may make an affirmative election to defer the distribution of his/her account if it exceeds five
thousand dollars ($5,000) on the date of his/her retirement or separation from service. Such affirmative election of deferral of distribution is separate and distinct from the requirement of consent to immediate distribution stated in paragraph 3.
of this Article XI, and shall apply independently thereof. It shall be made by written statement describing the Participant’s account in a form prescribed by the Committee, signed by the Participant and delivered by him/her to the Committee not
later than sixty (60) days following the Participant’s retirement or separation from service. 
 7. Sequence of Deferred Distribution of
Accounts 
 A. Subject to subparagraph 7.B., below, if a Participant refuses consent to immediate distribution of his/her account under paragraph 3. of
this Article XI, above, or a Participant makes the affirmative election of deferral of distribution provided in paragraph 6. of this Article XI, his/her account shall continue to be maintained in the Trust in the manner provided by the Plan. Subject
to the prior approval and consent of the Committee, the Participant may at any time thereafter request in writing that distribution of his/her account be made. When such a request is approved by the Committee, the Participant’s account shall be
distributed to the Participant within a reasonable time following receipt and approval of that request; provided that such a deferred distribution of a Participant’s account shall be only in the following sequence: first, either all of his/her
account, or all of his/her Participant contributions; second, the balance of the account not previously distributed; thus, all of a Participant’s contributions must be distributed to him/her at one time, and no Company contributions can be
distributed without previous or concurrent distribution of all Participant contributions. A Participant who has withdrawn all of his/her own contributions prior to deferral of distribution hereunder may thereafter request and receive only a single
distribution of the balance of his/her account. No earnings credited to the account of a Participant can be distributed to him/her after his/her termination of employment with the Company without liquidating the total account balance. 
 B. Notwithstanding the foregoing, a Participant (or former Employee) shall have the right to withdrawal of all or a portion of that part of his/her Pre-1999 KGS 401(k)
Thrift Plan Account of which distribution was deferred pursuant to the provisions of the KGS 401(k) Thrift Plan in accordance with those provisions, which are incorporated herein by reference. 
 8. Deferred Distribution at Age 70 1/2 
 A Participant whose employment with the Company is
terminated and who makes the affirmative election to defer the distribution of his/her account under paragraph 6. of this Article XI, shall in all events have any undistributed balance of his/her account paid and distributed to him/her not later
than April 1 of the calendar year following the end of the calendar year which he/she attains age 70 1/2.

  

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 9. Distribution of Deferred Accounts at Death of Participant 
 If a Participant who has refused to consent to immediate distribution under paragraph 3. of this Article XI, above, or who has made the affirmative election to defer
receipt of his/her account under paragraph 6. of this Article XI, dies before a complete distribution of the account has been made, then upon his/her death, his/her entire account balance shall be distributed to his/her surviving spouse,
beneficiaries, or legatees in the same manner and within the same time periods following such death as are provided for under paragraph 3. of this Article XI in the case of a Participant’s death prior to other termination of his/her employment
with the Company. 
 10. Mandatory Time of Distribution 
 Notwithstanding the foregoing, in no event will the entire balance in the account of any Participant be distributed to such
Participant later than the Required Beginning Date which shall be the later of April 1 of the calendar year following the calendar year in which the Participant attains age seventy and one-half (70 1/2) or retires, except that benefit distributions to a 5-percent owner must commence by April 1 of the calendar year following the calendar year in
which the Participant attains age 70 1/2; provided, the allowance of April 1 of the calendar year following
the calendar year the Participant retires as the Required Beginning Date is applicable to Plan Years beginning after December 31, 1996. Provided, in the event a Participant dies before the distribution of the Participant’s interest has
begun, then the entire interest of the Participant will, in any event, be distributed within five (5) years after the death of the Participant. Notwithstanding the preceding sentence which states the minimum distribution requirement of Code
Section 401(a)(9), it is nevertheless intended that every distribution of a Participant’s account under the Plan on his/her death shall be made at least as rapidly as the immediate total distribution generally provided for distributions
hereunder, without any deferral allowed. A Participant shall be treated as a 5-percent owner for purposes of the provisions of this paragraph if such Participant is a 5-percent owner as defined in Code Section 416 at any time during the Plan
Year ending with or within the calendar year in which such Participant (owner) attains age 70 1/2.

 11. Form of Distributions 
 In so
far as practicable, upon any complete liquidation of a Participant’s account, upon distributions under paragraphs 7. or 8. of this Article XI, and upon withdrawals provided for in Article XII, any securities held in the account of the
Participant will be distributed in kind if the Participant so requests, but where this form of distribution is impracticable, cash will be paid in an amount equal to the value at the time of distribution, as determined by the Trustee, of any
investment that it is impracticable to distribute in kind. No other form of distribution (neither annuity contract nor other item) shall be made from the Trust; provided, that accrued benefits of accounts transferred to the Trust from the trust of a
subsidiary plan pursuant to paragraphs 1. or 2. of Article V, which are subject to the provisions of Articles XXII and XXIII hereof shall be distributed as provided therein. 
  

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 12. Participant’s Right to Demand Employer Securities 
 Notwithstanding any other provisions herein, each Participant who has his/her Participant Account invested in ONEOK, Inc. Common Stock, and each Participant who is
participating in the Employee Stock Ownership Plan part of the Plan and is entitled to a distribution from the Plan shall have a right to demand that his/her Participant Account and benefits under the Plan be distributed in the form of ONEOK, Inc.
Common Stock. Prior to commencement of a distribution from a Participant’s Account to the Participant, the Committee and the Trustee shall notify the Participant in writing that the Participant has the right to demand that his/her Participant
Account and benefits be distributed in the form of ONEOK, Inc. Common Stock. Such right shall expire at the time specified in such notice, which shall be not less than thirty (30) days after the delivery of such notice to the Participant. A
Participant who has the stock of a former employer in his/her Plan account by reason of a merger, spin-off or transfer of plan accounts from a former employer plan shall have a similar right to demand distribution of such stock in accordance with
the provisions of this paragraph 12. 
 13. Qualified Domestic Relations Orders; Distributions 
 Notwithstanding any other provisions of the Plan, if a Participant’s account is ordered paid, transferred, or assigned, in whole or in part, to an alternate payee
pursuant to an order determined by the Plan Administrator to be a Qualified Domestic Relations Order within the meaning of Code Section 414(p), the payment and distribution to such alternate payee of amounts attributable to the
Participant’s account shall be made by the Plan and Trustee in a single lump sum distribution, and such distribution to such alternate payee shall be made pursuant to such a Qualified Domestic Relations Order prior to the date on which the
Participant attains the earliest retirement age under the Plan, and within a reasonable period of time after such determination, if such payment is otherwise permissible under Code Section 414(p). For purposes of this paragraph 13., the term
“earliest retirement age” shall mean the earlier of (i) the date on which the Participant is entitled to a distribution under the Plan, or (ii) the later of (a) the date the Participant attains age fifty (50), or
(b) the earliest date on which the Participant could begin receiving benefits under the Plan if the Participant separated from service. Periodic distributions authorized from plan accounts assigned to alternate payees under the KGS 401(k)
Thrift Plan pursuant to a Qualified Domestic Relations Order shall be made in accordance with such Order, notwithstanding the foregoing provisions generally providing for immediate distribution. 
  

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 ARTICLE XII. 
 WTHDRAWALS, DISTRIBUTIONS, PLAN LOANS 
 PARAGRAPH 
 1. Withdrawals from 401(k) Contribution Account 
 Subject to paragraph
10, and the limitations of paragraph 5. of this Article XII, below, a Participant may withdraw amounts from his/her 401(k) Contribution Account by submitting his/her written request to the Committee at such time and in such manner as shall be
prescribed by the Committee under the following conditions: 
 A. The withdrawal request must be on account of an immediate and heavy financial need
(sometimes hereinafter referred to as “hardship”) of the Participant and the withdrawal must be necessary to satisfy such hardship, all as determined by the Committee in accordance with the nondiscriminatory and objective standards
set forth herein. 
 B. No hardship withdrawal shall be made in an amount in excess of the amount of the immediate and heavy financial need of the
Participant. The amount of an immediate and heavy financial need may include any amounts necessary to pay any federal, state, or local income taxes or penalties reasonably anticipated to result from the distribution. 
 C. No hardship withdrawal shall be permitted unless the Participant has obtained all distributions other than hardship distributions from the Company’s 401(k)
Contributions in the Participant’s Account, and has obtained all nontaxable loans currently available under all plans maintained by the Company. 
 D. A
withdrawal will be deemed to be made on account of an immediate and heavy financial need if it is on account of: 
  

	 	1.	Expenses for (or necessary to obtain) medical care that would be deductible under Code Section 213(d)(determined without regard to whether the expenses exceed 7.5% of adjusted
gross income described in Code Section 213(d) previously incurred by the Participant, the Participant’s spouse, or any dependents; 

  

	 	2.	Costs directly related to the purchase of a principal residence for the Participant (excluding mortgage payments); 

  

	 	3.	Payment of tuition, related educational fees and room and board expenses, for up to the next twelve (12) months of post-secondary education for the Participant, or the
Participant’s spouse, children, or dependents, as defined in Code Section 152, and for taxable years beginning on and after January 1, 2005, without regard to Code Section 152(b)(1),(b)(2) and (d)(1)(B); 

 

	 	4.	Payments necessary to prevent the eviction of the Participant from his/her principal residence or foreclosure on the mortgage on that residence; 

  

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	 	5.	Payments for burial or funeral expenses for the Participant’s deceased parent, spouse, children or dependents (as defined in Code Section 152, and, for taxable years
beginning on or after January 1, 2005, without regard to Code Section 152(d)(1)(B); 

  

	 	6.	Expenses for the repair or damage to the Participant’s principal residence that would qualify for the casualty deduction under Code Section 165 (determined without regard
to whether the loss exceeds ten percent (10%) of adjusted gross income; and 

  

	 	7.	Such other facts and circumstances as the Commissioner of Internal Revenue lists as deemed immediate and heavy financial needs through publication of regulations, revenue rulings,
notices, and other documents of general applicability. 

 E. Notwithstanding anything otherwise expressed or implied in the Plan, or under Code
Section 401(k), or the regulations under that section, a hardship distribution shall not be determined or allowed under the Plan on account of an event or condition of immediate and heavy financial need of a person who is a beneficiary of a
Participant under the Plan, unless such person, in addition to being such a beneficiary, also has a relationship of being the spouse or a dependent of the Participant that comes within the applicable terms and provisions of paragraph1.D, above; and
a hardship distribution shall not otherwise be allowed under the Plan for or with respect to circumstances of immediate and heavy financial need of a beneficiary of a Participant if such beneficiary is not either the spouse or a dependent of the
Participant. 
 F. If a hardship withdrawal is made to a Participant, then: 
  

	 	1.	The Participant’s elective Reductions in Compensation and 401(k) Contributions attributable thereto, and all other Participant deposits and contributions to the Plan and all
other plans (as defined in Treasury Regulation 1.401(k)-1(d)(2)(iv)(B)(4)) of the Company will be suspended for twelve (12) months after the hardship withdrawal is made; and 

  

	 	2.	The Participant may not make elective Reductions in Compensation for the Participant’s taxable year immediately following the taxable year of the hardship withdrawal in excess
of the applicable limit under Code Section 402(g) for such next taxable year less such Participant’s elective Reduction in Compensation for the taxable year of the hardship withdrawal. 

 G. The hardship withdrawal, if approved by the Committee, shall be paid to the Participant as soon as practicable following the date the Participant’s written
request is submitted to the Committee. A hardship withdrawal for payment of tuition under subparagraph D.(3), above, may be made in two (2) parts over the twelve (12) month period to conform the withdrawal to the amount of tuition
determined to be needed by the student. 
  

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 H. A hardship withdrawal and distribution is not an eligible rollover distribution under Code Section 402(c) and the
Plan shall be administered consistent with such classification and treatment. 
 I. A Participant who has received a hardship withdrawal pursuant to the
foregoing provisions of the Plan, and who has thereby been suspended from making Participant deposits and contributions for twelve (12) months, shall be reinstated to the amount of his/her elected Reduction in Compensation and other
contributions in effect at the time of the hardship withdrawal unless the Participant changes such amount after notice from the Committee which shall be provided not less than thirty (30) days prior to the end of the suspension. A Participant
may be required to provide such other written application or election to the Committee, as it may determine under rules prescribed by it, in order to resume making Participant contributions under the Plan. 
 2. Participant Withdrawals of After-Tax Deposits 
 A Participant may
request to withdraw in a lump sum all or any part of the value of his/her After-Tax Deposits in his/her Account, provided that the withdrawal is for a least $500 or the full value of the Account, if less. A Participant may request a withdrawal in
writing on a form prescribed by the Committee. 
 The amount of the withdrawal shall be withdrawn from the Participant’s After-Tax Deposits in
proportion to the value of the Participant=s total Plan Account balance. 
 A withdrawal pursuant to this paragraph may be made once per quarter and shall be
paid as soon as practicable after the appropriate request is received by the Trustee. A withdrawal shall be paid in cash, except that if a Participant=s After-Tax Deposits are invested in the ONEOK, Inc. Common Stock, the Participant may request
that the value withdrawn be distributed in whole shares of ONEOK, Inc. Common Stock. Any fractional shares shall be paid in cash, the amount of such payment to be based upon the closing price of ONEOK, Inc. Common Stock on the New York Stock
Exchange Consolidated Tape, on a trading date which does not precede the date of the distribution by more than 10 days. A Participant who has After-Tax Deposits in his/her Plan Account invested in stock of a prior employer which has been transferred
to the Trust pursuant to any merger, acquisition or similar transaction may also request distribution of such stock in a manner comparable to that provided in the foregoing provisions with respect to ONEOK, Inc. Common Stock. 
 3. Withdrawal Penalty 
 In the event a Participant makes a withdrawal
of After-Tax Deposits in his/her Plan Account pursuant to paragraph 2., above, such Participant shall not be entitled to Company Matching Contributions otherwise required to be made under the Plan until the first of the next month following the
expiration of six (6) months from the date of such withdrawal by such Participant. Provided, such suspension of Company Matching Contributions shall not apply to withdrawal of any After-Tax Deposits that were made by a Participant to the Plan
prior to January 1, 1987. This suspension and abatement of the Participant=s right to receive Company Matching Contributions shall not affect the Participant=s right to elect a Reduction in Compensation or make After-Tax Deposits to the extent
otherwise permissible under the Plan. 
  

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 4. Participant Withdrawals of Matching Contributions or Other Amounts 
 Except as otherwise provided in paragraph 10, below, or as expressly provided differently herein, a Participant shall not be permitted or allowed to withdraw any Company
Matching Contributions or other amounts in excess of the amount of 401(k) Contributions or After-Tax Deposits coming into his/her account after August 31, 1989. 
 5. Sequence of Permitted Withdrawals 
 In the event a Participant desires to withdraw funds credited to his/her
accounts from After-Tax Deposits, the withdrawal sequence shall be: first, the Participant’s contributions which are in the Participant’s Prior ONEOK Thrift Plan Pre-1987 Employee Contribution Account Balance; second, the Participant=s KGS
401(k) Thrift Plan Account Balances (to the extent they are subject to withdrawal pursuant to paragraph 10 of this Article XII, below); third, the Participant’s Separate Section 72(d) Employee Contribution Account; and fourth, the balance
of the Participant’s Account, if any, which may be withdrawn under this Article XII. 
 6. Voluntary Withdrawal
After Age Fifty-Nine and One-Half (59 1/2) 
 Except as otherwise provided in paragraph 10, below, subject to prior approval of the Committee, a Participant who has completed five
(5) years of participation in this Plan may be allowed to withdraw a single sum amount not exceeding the entire balance in his/her Accounts at any time after his/her attainment of age fifty-nine and one-half (59 1/2). Such a voluntary withdrawal may be made only one (1) time by any Participant. 
 7. Distributions in Certain Events 
 Notwithstanding any other
provisions hereof limiting the distribution or withdrawal of a Participant’s 401(k) Contribution Account or other amounts of a Participant’s Account, a Participant’s Account may be distributed in the event of (i) the termination
of the Plan without establishment or maintenance of another defined contribution plan by the Company (other than an employee stock ownership plan as defined in Code Section 4975(e)(7)), (ii) the disposition by the Company of substantially
all of the assets (within the meaning of Code Section 409(d)(2)) used by the Company in a trade or business of the Company, but only with respect to a Participant who continues employment with the corporation acquiring such assets, or
(iii) the disposition by the Company of the Company’s interest in a subsidiary (within the meaning of Code Section 409(d)(3)), but only with respect to a Participant who continues employment with such subsidiary. No such distribution
shall be permitted to a Participant unless it is made in the form of a lump sum distribution as defined in Code Section 401(k)(10)(B)(ii); and a distribution by reason of an event described in clause (ii) or (iii) of the preceding
sentence of this paragraph 7. shall not be permitted unless the transferor corporation continues to maintain the Plan after the disposition. Payment and distribution of ESOP Dividends to Participants and retired or terminated Employees may be made
to the extent otherwise provided for in the Plan, and as allowed and authorized by Code Sections 4975(e) and 404(k) and Treasury regulations pertaining to such payments and distributions. 
  

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 8. ESOP Dividend Distributions 
 The Committee and Trustee may have ESOP dividends paid and distributed to a Participant, and to a retired or terminated Employee in accordance with and to the extent provided in paragraph 2. of Article X, above.

 9. No Withdrawal of Deferred Account 
 Subject to
paragraph 10, below, when a Participant’s employment with the Company is terminated by retirement or for any other reason other than death, and he/she either does not consent to immediate distribution of his/her account under paragraph 3. of
Article XI, or he/she elects to defer the distribution of his/her account under paragraph 6. of Article XI, he/she shall thereafter receive distribution of his/her account only in accordance with the provisions of paragraphs 7., 8., and 9. of
Article XI, and he/she shall not be permitted thereafter to make withdrawal of the funds in his/her account pursuant to the withdrawal provisions of this Article XII. 
 10. Limited Withdrawal Rights; Pre-1999 KGS 401(k) Thrift Plan Account 
 Notwithstanding anything to the contrary
expressed herein a Participant shall have the right to make a withdrawal from his/her Pre-1999 KGS 401(k) Thrift Plan Account balance at January 11, 1999, pursuant to the following provisions: 
 A. Withdrawal from Matching Contribution Account. In the event that a Participant withdraws the full value of the After Tax Deposits under the provisions of
paragraph 2., above, a Participant who has been a Participant in the Plan for a period of five (5) years or more may additionally withdraw in a lump sum any or all of the Company Matching Contributions (Company Matching Account) in such
Participant’s Pre-1999 KGS 401(k) Thrift Plan Account, provided that the aggregate amount of the withdrawal from the Participant’s After Tax Deposits and Company Matching Contributions is for at least $500 or the full value of the Account,
if less. A Participant may request a withdrawal in writing on a form prescribed by the Committee. 
 The amount of the withdrawal shall be withdrawn from the
Participant=s Company Matching Contributions in proportion to the value of the Participant=s total Account balance. 
 A withdrawal may be made once per
quarter and shall be paid as soon as practicable after the appropriate request is received by the Trustee. A withdrawal shall be paid in cash, except that if a Participant=s Company Matching Contributions are invested in ONEOK, Inc. Common Stock a
Participant may request that the value withdrawn be distributed in whole shares of ONEOK, Inc. Common Stock. Any fractional shares shall be paid in cash, the amount of such payment to be based upon the closing price of ONEOK, Inc. Common Stock on
the New York Stock Exchange Consolidated Tape, on a trading date which does not precede the date of the distribution by more than 10 days. 
  

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 B. Withdrawal From Rollover Account. In the event that a Participant withdraws the full value of the After-Tax
Deposits and the Company Matching Contributions under the provisions of paragraphs 2. and 10.A., above, the Participant may additionally withdraw in a lump sum any or all of the Participant’s Rollover Account in his/her Pre-1999 KGS 401(k)
Thrift Plan Account provided that the aggregate amount of the withdrawal from the Participant’s After Tax Deposits Account, Company Matching Contributions, and rollover balance in the Participant’s account is at least $500 or the full
value of the Account, if less. A Participant may request a withdrawal in writing on a form prescribed by the Committee. The amount of the withdrawal shall be withdrawn from the Participant’s After Tax Deposits, Company Matching Contributions,
and Rollover balance in his/her account. 
 A withdrawal may be made once per quarter and shall be paid as soon as practicable after the appropriate
withdrawal request is received by the Trustee. A withdrawal shall be paid in cash, except that if a Participant=s Rollover balance in his/her Account is invested in ONEOK, Inc. Common Stock, a Participant may request that the value withdrawn be
distributed in whole shares of ONEOK, Inc. Common Stock. Any fractional shares shall be paid in cash, the amount of such payment to be based upon the closing price of ONEOK, Inc. Common Stock on the New York Stock Exchange Consolidated Tape, on a
trading date which does not precede the date of the distribution by more than 10 trading days. 
 C. Prior Employer Stock. A Participant who has
After-Tax Deposits in his/her Plan account invested in stock of a prior employer which has been transferred to the Trust pursuant to any merger, acquisition or similar transaction may request distribution of such stock in a manner comparable to that
provided in subparagraphs 10.A. and 10.B., above, with respect to ONEOK, Inc. Common Stock. 
 D. Withdrawals After
Age 59 1/2. A Participant who has attained age
59 1/2 may withdraw all or a portion of his/her 401(k) Account contributions in his/her Pre-1999 KGS 401(k)
Thrift Plan Account as of the end of the month next following such Participant’s delivery of request for withdrawal to the Trustee. A withdrawal may be made once per quarter and shall be paid as soon as practicable after the appropriate request
is received by the Trustee. 
 E. Hardship Withdrawals. A Participant may request an in-service distribution from his/her 401(k)
Contribution Account in his/her Pre-1999 KGS 401(k) Thrift Plan Account on the basis of a hardship in accordance with paragraph 1, of this Article XII. 
 F.
Withdrawal Penalty. In the event a Participant withdraws sums pursuant to subparagraphs 10.A. or 10.B., above, such Participant shall not be entitled to Company Matching Contributions until the first of the next month following the expiration
of six (6) months from the date of such withdrawal by such Participant. This abatement of the Participant=s right to receive Company Matching Contributions shall not affect the Participant=s right to elect a Reduction in Compensation or make
After-Tax Deposits to the extent otherwise permissible under the Plan. 
 In the event a Participant withdraws sums pursuant to the hardship distribution
provisions of paragraph 1. of this Article XII, Participant shall not be entitled to Company Matching Contributions until the first of the month next following the expiration of twelve (12) months from the date of such withdrawal by the
participant. 
  

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 11. Suspension During Approved Leave of Absence 
 A Participant’s deposits and the corresponding Company Matching Contributions will be suspended automatically for the period of any Company-approved leave of absence without pay, including military and other
governmental service. The Participant’s employment with the Company shall not be treated as terminated thereby for the purposes of paragraph 3. of Article XI. 
 12. Effect of Termination or Suspension of Participation 
 Any termination or suspension under any provision of this Plan, except suspension
of deposits under paragraph 11. of this Article XII, shall have the effect of ending the period of the Participant’s current Plan participation. Upon or at any time after expiration of the required period following any termination, the
Participant may again commence participation in the manner provided in paragraph 2. of Article II hereof as of the first day of the calendar month following the month in which he/she elects to recommence participation and a new period of such
Participant’s current Plan participation shall thereupon commence. 
 13. No Forfeiture for Suspension or Termination 
 No termination or suspension of participation in the Plan or failure to resume participation at any time shall affect the Participant’s right to receive distribution
of his/her account upon complete liquidation upon the terms and at the time provided in paragraph 3. of Article XI, or upon termination of the Plan as provided in this paragraph 13. of this Article XII or upon adverse modification of the Plan as
provided in paragraph 3. of Article XXIV, or upon termination of the Trust as provided in paragraph 5. of Article XXIV. Furthermore, and notwithstanding any other terms or provisions of this Plan, no suspension or termination of participation under
the Plan shall operate to alter a Participant’s rights, privileges, or obligations thereunder with respect to the management or disposition of his/her account with the Trustee. 
 14. Termination of Plan 
 Upon a partial termination of the Plan, or upon a termination of the Plan as an entirety or
as to any subsidiary of the Company, each Participant of the Company or of such subsidiary then participating, as the case may be, will receive distribution of the entire balance of his/her account. 
 15. Valuation of Securities 
 For the purpose of valuing a
Participant’s Account in connection with any withdrawal under the provisions of this Article XII and for the purpose of any distribution in kind, any nontransferable Government bonds shall be valued at the then current redemption price thereof,
and other securities shall be valued at prices determined by the Trustee, as near as practicable to those then obtainable upon a sale in the open market. 
  

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 16. Participant Loan Program 
 The Committee and the Trustee shall have the power and duty to establish a nondiscriminatory Participant loan program for the Plan, which the Trustee shall observe in making loans, if any, to Participants and under which loans may be made
available to all Participants under the Plan who are parties in interest with respect to the Plan, within the meaning of Section 3(14) of the Employee Retirement Income Security Act of 1974 as amended, on a reasonably equivalent basis and not
made available in an amount to Highly Compensated Employees which is greater than the amount available to other Employees, which loans shall be made in accordance with specific provisions regarding such loans set forth in the Plan or in a separate
written document forming a part of the Plan, and which loans shall bear a reasonable rate of interest and be adequately secured. 
 The loan program to be
established for the Plan shall be contained in a written document separate from this Plan but forming part of the Plan and incorporated herein by reference for all purposes, which shall include the following: (i) the identity of the person or
positions authorized to administer the Participant loan program; (ii) a procedure for applying for loans; (iii) the basis on which loans will be approved or denied; (iv) limitations (if any) on the types and amount of loans offered;
(v) the procedure under the program for determining a reasonable rate of interest; (vi) the types of collateral which may secure a Participant loan; (vii) the events constituting default and steps that will be taken to preserve Plan
assets in the event of such default; and (viii) the other requirements, policies, and procedures with respect to the Participant loan program which the Committee determines should be included therein from time to time. The separate written
document containing such provisions of the Plan loan program shall be maintained by the Committee in the office of the Secretary of the Company, or by such other person as may be designated by the Committee, and shall be made available for
inspection or copying upon the request of Participants of the Plan. 
 Notwithstanding anything to the contrary expressed herein, there shall be no reduction
of the accrued benefit of a Participant in his/her account in the Plan by reason of any default on a plan loan to such Participant prior to the time at which an actual distribution of the amount of such reduction to the Participant would otherwise
be permissible under the Plan. A plan loan will not be considered to be a distribution or reduction of the Participant’s accrued benefit in his/her account solely by reason of its inclusion in his/her gross income under Code Section 72(p).

 Any such loan shall be made upon application of the Participant, and on terms acceptable to the Committee in an amount
which when added to the outstanding balance of all other loans from the Plan to the Participant does not exceed the lesser of (i) fifty thousand dollars ($50,000), reduced by the excess (if any) of (a) the highest outstanding balance of
loans from the Plan during the one (1)-year period ending on the day before the date on which such loan was made, over (b) the outstanding balance of loans from the Plan on the date on which such loan was made, or (ii) one-half ( 1/2) of the present value of the nonforfeitable accrued benefit of the Participant under the Plan. Such loan shall
bear interest at such reasonable rate as the Committee may establish, and the Committee shall make such arrangements for adequate security and repayment as are reasonable under the circumstances. The Committee shall require the prior written consent
of the Participant and, if married, the Participant’s spouse, with respect to any loan which is secured by such married Participant’s accrued benefit under this Plan. The written 

  

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consent of the Participant’s spouse shall acknowledge the effect thereof and be witnessed by a Plan representative or notary public. Any such loan shall
by its terms be required to be repaid within five (5) years, except a longer term loan may be made in the case of a loan used to acquire any dwelling unit which within a reasonable time is to be used (determined at the time the loan is made) as
the principal residence of the Participant. Except as permitted by regulations, any loan shall provide for substantially level amortization thereof (with payments to be made not less frequently than quarterly) over the term of the loan. 

In its discretion, the Committee may direct not more than two (2) loans may be made and outstanding to a Participant at any time, but the aggregate amount of all
such loans outstanding at any time shall not exceed the maximum amount hereinabove stated. In the event of default in repayment, separation from service, or death of the Participant, while a loan is outstanding, the unpaid balance and any interest
due thereon shall immediately become due and payable and shall be charged first against the balance to the Participant’s credit in the Participant’s Pre-1987 Employee Contribution Account Balance, if any, then against the
Participant’s Separate Section 72(d) Employee Contribution Account Balance, if any, then against the rest of the Participant’s Employee Contribution Account, and then against the balance of the Participant’s Account. For purposes
of the foregoing limitations, the rules applicable to affiliated corporations and employers under Code Sections 414(b),(c), and (m) shall apply, and all plans of the Company determined (after the application of such sections) shall be treated
as one (1) plan. Loan repayments will be suspended under this Plan and the Participant Loan program as permitted by USERRA under Code Section 414(u)(4). 
 17. No Withdrawal of Loan Amount 
 Participant to whom a loan has been made pursuant to the provisions of paragraph 16. of this Article XII,
shall not be allowed at any time to withdraw any amount from his/her Account in excess of the amount which is equal to the current value of his/her Account minus the outstanding unpaid balance of such loan together with any accrued interest thereon.

  

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 ARTICLE XIII. 
 BENEFICIARIES IN THE EVENT OF DEATH 
 PARAGRAPH 
 1. Surviving Spouse as Primary Beneficiary 
 A Participant’s
nonforfeitable Accrued Benefit (reduced by any security interest held by the Plan by reason of a loan outstanding to such Participant) shall be payable in full, on the death of the Participant, to the Participant’s surviving spouse, or if there
is no surviving spouse or the surviving spouse consents, in the manner provided in paragraph 2. of this Article XIII, below, then to a designated beneficiary of the Participant under paragraph 3. of this Article XIII. 
 2. Election and Consent to Alternate Beneficiary or Beneficiaries 
 A
Participant may elect at any time to waive the required distribution and payment of his/her Account to his/her surviving spouse in the event of his/her death. Any such election must be made in writing by the Participant in the form prescribed by the
Committee. Any election by a Participant to waive the surviving spouse benefit may be revoked at any time by the Participant by a written declaration of revocation delivered to the Committee in such form as it may prescribe. Any election to waive
the surviving spouse benefit provided under paragraph 1. of this Article XIII above shall not take effect unless the spouse of the Participant consents in writing to such election, such election designates a beneficiary which may not be changed
without spousal consent (or the consent of the spouse expressly permits designations by the Participant without requirement of further consent by the spouse), and the spouse’s consent acknowledges the effect of such election and is witnessed by
a Plan representative or notary public; or it is established to the satisfaction of the Plan representative that the consent required of the spouse, as hereinabove provided, may not be obtained because the spouse cannot be located, or because of
such other circumstances as may be prescribed by Treasury Regulations; provided, that any such consent by a spouse shall be effective only with respect to such spouse. 
 3. Designation of Beneficiary or Beneficiaries 
 A Participant who has no spouse, or who with his/her spouse’s
consent has elected to waive the surviving spouse benefit as hereinabove provided, may file with the Committee, a written designation, in the form prescribed by the Committee, of the beneficiary or the beneficiaries to receive all or part of his/her
account upon his/her death, and the Participant shall also file with the Committee such information as to the identity of the beneficiary or beneficiaries and the relationship of the beneficiary or beneficiaries to the Participant as the Committee
may from time to time require. The last designation received by the Committee shall be controlling over any testamentary or other disposition; provided, however, that no designation, or change or cancellation thereof, under this Plan shall be
effective unless received by the Committee prior to the Participant’s death, and in no event shall it be effective as of a date prior to such receipt. 
  

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 4. Payment and Distribution to Beneficiary or Beneficiaries 
 Upon the death of a Participant, his/her account shall be paid or distributed to the Participant’s spouse, or beneficiary or beneficiaries designated by him/her as
provided in the preceding paragraphs 1. through 3. of this Article XIII, or, in the absence of such designation, to the estate of the Participant or to the beneficiary or beneficiaries entitled thereto under the intestacy laws governing the
disposition of his/her estate, and thereupon the Trustee, the Company, and the Committee shall not be under any further liability to anyone. Provided, that the provisions for payment of a distribution to a surviving spouse of a deceased Participant
in the KGS 401(k) Thrift Plan for a designated period of time shall remain in effect and be applicable until such distribution is completed pursuant to such provisions. 
  

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 ARTICLE XIV. 
 SUBSIDIARIES 
 PARAGRAPH 
 1. The Plan may be modified and amended from time to time pursuant to the provisions of Article XXIV hereof for purposes of extending its benefits to one (1) or more Subsidiaries of the Company. 
  

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 ARTICLE XV. 
 ADMINISTRATION 
 PARAGRAPH 
 1. Thrift Plan Committee 
 The Plan shall be administered by a Committee consisting of not less than three
(3) members, who shall be appointed from time to time by the Board of Directors and shall serve at the pleasure of the Board. Each of the members of the Committee shall from time to time designate an alternate who shall have full power to act
in his/her absence or inability to act. Members of the Committee may participate in the benefits under the Plan provided they are otherwise eligible to do so. Except as otherwise provided by the Board of Directors, no member of the Committee shall
receive any compensation for his/her services as such. No bond or other security shall be required of any member of the Committee in such capacity in any jurisdiction. In the absence of the Chairman of the Committee, the alternate designated by the
Chairman shall preside at the meetings of the Committee. 
 2. Trust, Trustee and Committee 
 The Company and the Bank of Oklahoma, N.A., have entered into a Trust Agreement pursuant to which the Bank of Oklahoma, N.A., is to act as Trustee under the Plan. The
Company may, without further reference to or action by any Employee, Participant, or any subsidiary of the Company participating in the Plan, (a) from time to time enter into such further agreements with the Trustee or other parties, and make
such amendments to said Trust Agreement or such further agreements, as the Company may deem necessary or desirable to carry out the Plan; (b) from time to time designate successor Trustees which in each case shall be a bank or trust company
having capital and surplus of not less than five hundred million dollars ($500,000,000); and (c) from time to time take such other steps and execute such other instruments as the Company may deem necessary or desirable to put the Plan into
effect or to carry it out. The Board shall determine the manner in which the Company shall take any such action. The Committee shall advise the Trustee in writing with respect to all benefits which become payable under the terms of the Plan and
shall direct the Trustee to pay such benefits from the respective Participants’ Accounts. The Committee shall have such other powers and duties as are specified in this instrument as the same may from time to time be constituted, and not in
limitation but in amplification of the foregoing, the Committee shall have power, to the exclusion of all other persons, in its sole discretion, to make all determinations and interpretations with respect to administration of the Plan, to interpret
or construe the provisions of this instrument and to determine all questions that may arise hereunder as to the status and rights of Participants and others hereunder, to decide any disputes which may arise hereunder; to construe and determine the
effect of beneficiary designations; to determine all questions that shall arise under the Plan, including questions as to the rights of Employees to become Participants, as to the rights of Participants, and including questions submitted by the
Trustee on all matters necessary for it properly to discharge its duties, powers, and obligations; to employ legal counsel, accountants, actuaries, consultants and agents; to establish and modify such rules and regulations for carrying out the
provisions of the Plan not inconsistent with the terms and provisions hereof, as the 

  

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Committee may consider proper and desirable; and in all things and respects whatsoever, without limitation, to direct the administration of the Plan and
Trust with the Trustee being subject to the direction of the Committee. The Committee shall establish and maintain reasonable procedures governing the filing of benefit claims, notification of benefit determinations and appeal of adverse benefit
determinations, as described in and consistent with paragraph 7 of this Article, below, and which shall also be described in the summary plan description for the Plan. The Committee may supply any omission or reconcile any inconsistency in this
instrument in such manner and to such extent as it shall deem expedient to carry the same into effect and it shall be the sole and final judge of such expediency. The Committee may adopt such regulations with respect to the signature by an Employee,
Participant and/or the spouse of an Employee or Participant to any directions or other papers to be signed by Employees or Participants and similar matters as the Committee shall determine in view of the laws of any state or states. 
 3. Plan Fiduciaries 
 The Fiduciary of the Plan, who shall have
authority to control and manage the operation and administration of the Plan, is the Committee. The Fiduciary may serve in more than one (1) fiduciary capacity under the Plan. It may employ one (1) or more persons to render advice to it.
It may delegate ministerial functions to any person or persons. The Trustee and the Company may by agreement in writing arrange for the delegation by the Trustee to the Committee of any of the Trustee’s functions except the custody of the
assets, the voting with respect to shares held by the Trustee, and the purchase and sale or redemption of securities. Any action in accordance with this paragraph will be subject to advance approval of the Board of Directors of the Company.

 4. Action by Thrift Plan Committee 
 Any act which this
instrument authorizes or requires the Committee to do may be done by a majority of the then members of the Committee. The action of such majority of the members expressed either by a vote at a meeting or in writing without a meeting, shall
constitute the action of the Committee and shall have the same effect for all purposes as if assented to by all of the members of the Committee at the time in office, provided, however, that the Committee may, in specific instances, authorize one
(1) of its members to act for the Committee when and if it is found desirable and convenient to do so. 
 5. Costs of Plan Administration

 Except as provided in paragraphs 4., 5., 6. and 8. of Article X hereof, or otherwise determined and directed by the Committee, the Company shall pay
all costs and expenses incurred in administering the Plan including without limitation the expenses of the Committee, the fees and expenses of the Trustee, the fees of its counsel, and other administrative expenses. 
 6. Uniform and Nondiscriminatory Application 
 All rules and decisions
of the Committee shall be uniformly and consistently applied to all Employees and Participants in similar circumstances. The Committee shall be entitled to rely upon information furnished by the Company pertinent to any calculation or determination
made pursuant to this Plan. 
  

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 7. Summary Plan Description; Committee Decisions; Procedures 
 The Committee shall cause to be furnished to each Participant a written summary plan description of the Plan and any amendment thereto. Such summary plan description
shall include the designation of the plan administrator, name of the Trustee, and shall set forth the Participant’s rights and duties with respect to the benefits available to him/her under the Plan. The summary plan description shall include a
description of claims procedures, which shall contain provisions that are consistent with the following terms of this paragraph. Any decisions of the Committee respecting an Employee’s right to become a Participant in the Plan or the right of a
Participant or beneficiary to benefits shall be delivered to the Employee, Participant or beneficiary in writing. If an Employee, Participant or beneficiary is denied benefits under the Plan, the Committee shall notify the Employee, Participant or
beneficiary of its decision with a written or electronic notification. Such notification shall set forth (i) the specific reason or reasons for the denial or adverse determination, (ii) the specific Plan provisions on which the
determination is based, (iii) a description of any additional material or information necessary for the Employee, Participant or beneficiary (hereinafter also referred to as a “claimant”) to perfect the claim and an explanation of why
such material or information is necessary, and (iv) a description of the Plan’s review procedures and time limits applicable to such procedures, including a statement of the right of a claimant to bring a civil action under ERISA following
an adverse benefit determination on review. 
 A claimant shall have a right to a full and fair review of a claim and adverse benefit determination, and in
all cases of such review (i) a claimant shall have at least sixty (60) days following receipt of notification of an adverse benefit determination within which to appeal such determination, (ii) a claimant shall have the opportunity to
submit written comments, documents, records and other information relating to the claim for benefits (iii) a claimant shall be provided, upon request and free of charge, reasonable access to and copies of all documents, records and other
information the Committee determines to be relevant to the claimant’s claim for benefits, and (iv) a review that takes into account all comments, documents, records and other information submitted by the claimant relating to the claim,
without regard to whether such information was submitted or considered in the initial benefit determination. A claimant shall be notified of the determination of the Committee and Plan on review within a reasonable time, but not later than sixty
(60) days after the receipt of the claimant’s request for review, unless the Committee and Plan determine that special circumstances require an extension of time for processing of the claim and review, in which event written notice of such
extension shall be furnished to the claimant prior to the termination of the initial sixty (60) day period, and in no event shall such extension exceed a period of sixty (60) days from the end of such initial period; and such notice of
extension shall indicate the special circumstances requiring an extension of time and the date by which the Committee and Plan expect to render the determination on review. A claimant shall be provided by the Committee and Plan a written or
electronic notification of a benefit determination on review. In the case of an adverse benefit determination on review, such notification shall set forth (i) the specific reason or reasons for the adverse determination, (ii) reference to
the specific Plan provisions on which the benefit determination is based, (iii) a statement that the claimant is entitled to receive, upon request and free of charge, reasonable access to, and copies of, all documents, records, or other
information the Committee determines to be relevant to the claimant’s claim for benefits, and (iv) a statement describing any voluntary appeal procedures offered by the Plan and the claimant’s right to obtain information about such
procedures, and a statement of the claimant’s right to bring an action under section 502(a) of ERISA. 
  

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 8. Recognition of Agency Relationships 
 The Trustee need not recognize the agency of any party for an Employee or Participant unless it shall receive documentary evidence thereof satisfactory to it and thereafter from time to time, as the Trustee may
determine, additional documentary evidence showing the continuance of such agency; provided that the Trustee shall not be required to recognize any agency which the Trustee deems to be a device for violating the provisions of Article XVII. Until
such time as the Trustee shall receive documentary evidence satisfactory to it of the cessation or modification of any agency, the Trustee shall be entitled to rely upon the continuance of such agency and to deal with the agent as if he/she or it
were the Employee or Participant. 
 9. Valuation of Trust Assets 
 The Trustee shall value the assets of the Plan Trust as of the close of the last day of the Plan Year, and more frequently, if directed by the Committee. The assets of the Trust shall be valued at their fair market value and the Committee
shall, in accordance with a method consistently followed and uniformly applied, allocate the sums contributed by the Company and Participants, plus the net income or minus the net loss of the Trust, and plus the net appreciation or minus the net
depreciation in the Trust assets, to the separate Participants’ Accounts of the respective Participants under the Plan in accordance with the foregoing and the provisions of Article X of the Plan. 
 10. Audit 
 The independent accountants who audit the books and
accounts of the Company shall annually examine the records of the Company and the Committee in respect of the Plan and, on the basis of such examination, make such report to the Trustee as it may request. The records of the Trustee and (subject to
such report by said independent accountants) the records of the Company and the Committee shall be conclusive in respect of all matters involved in the administration of the Plan. 
 11. Annual Reports 
 The Committee shall annually, mail to each Participant a statement as of the end of the previous
Plan Year, at such time and in such form as the Committee shall determine, setting forth the account of such Participant. Such statement shall be deemed to have been accepted as correct unless written notice to the contrary is received by the
Trustee within thirty (30) days after the mailing of such statement to the Participant. 
 12. ONECU Plan Sponsorship 
 The Plan was heretofore sponsored and maintained by the ONEOK Employees Federal Credit Union, a credit union organized and chartered under federal law, hereinafter
referred to as (“ONECU”) pursuant to the provisions and requirements of Code Section 413(c) pertaining to a plan maintained by more than one (1) employer. ONECU has terminated its sponsorship and maintenance of the Plan pursuant
to Code Section 413(c). The company has entered into a separate arrangement to administer such terminated plan for ONECU. 
  

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 ARTICLE XVI. 
 NOTICES AND OTHER COMMUNICATIONS 
 PARAGRAPH 
 1. Delivery of Notices and Other Documents 
 All notices, reports, and
statements given, made, delivered, or transmitted to a Participant shall be deemed duly given, made, delivered, or transmitted when mailed, by such class of mail as the Trustee may deem appropriate, with postage prepaid and addressed to the
Participant at the address last appearing on the books of the Company. A Participant may change his/her address from time to time by written notice in form prescribed by the Committee. 
 2. Delivery of Communications by Participants 
 Written directions, notices, and other communications from
Participants to the Company, the Trustee, or the Committee shall be mailed by first-class mail or delivered to such location as shall be specified in regulations or upon the forms prescribed by the Committee, and shall be deemed to have been given
when received at such location. 
  

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 ARTICLE XVII. 
 NON-ASSIGNABILITY 
 PARAGRAPH 
 1. General 
 To the extent permitted by law, it is a condition of the Plan, and all rights of each Participant shall
be subject thereto, that no right or interest of any Participant in the Plan or in his/her account shall be assignable or transferable in whole or in part, either directly or by operation of law or otherwise, including (but without limitation)
execution, levy, garnishment, attachment, pledge, bankruptcy, or in any other manner, but excluding devolution by death or mental incompetency; and no right or interest of any Participant in the Plan or in his/her account shall be liable for or
subject to any obligation or liability of such Participant. 
 2. Loans 
 The foregoing limitation in paragraph 1. shall not apply to a loan made to a Participant if such loan is secured by the Participant’s accrued nonforfeitable benefit and such loan is made in accordance with the
nondiscriminatory loan policy prescribed in paragraph 16. of Article XII. 
 3. Qualified Domestic Relations Orders 
 The foregoing limitation shall not apply to a Qualified Domestic Relations Order, and payments shall be made hereunder in accordance with the applicable requirements of
any such Qualified Domestic Relations Order in accordance with written procedures to be established by the Committee to determine the qualified status of domestic relations orders and to administer distributions under such orders in accordance with
Section 206(d)(3) of ERISA, and regulations thereunder. For purposes of this Plan a “Qualified Domestic Relations Order” means any judgment, decree, or order (including approval of a property settlement) which creates or recognizes
the existence of an alternate payee’s right to, or assigns to an alternate payee the right to receive all or a portion of the benefits payable with respect to a Participant under this Plan, and relates to the provision of child support, alimony
payments, or marital property rights to a spouse, former spouse, child, or other dependent of a Participant, is made pursuant to a state domestic relations law (including a community property law), and which meets the requirements of
Section 206(d)(3)(C) and (D) of ERISA. For purposes of the foregoing, an “alternate payee” means any spouse, former spouse, child, or other dependent of a Participant who is recognized by a Qualified Domestic Relations Order as
having a right to receive all or a portion of, the benefits payable under the Plan with respect to such Participant. 
  

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 ARTICLE XVIII. 
 TERMS OF EMPLOYMENT UNAFFECTED 
 PARAGRAPH 
 1. Participation in the Plan by a Participant shall in no way affect any of the Company’s rights to assign such Participant to a different job or position; to change
his/her title, authority, duties, or rate of compensation; or to terminate his/her employment. 
  

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 ARTICLE XIX. 
 CONSTRUCTION OF PLAN 
 PARAGRAPH 
 1. The Plan shall be governed by and construed in accordance with the laws of the State of Oklahoma. Any interpretation of the Plan by the Committee shall be conclusive and may be relied upon by the Trustee and all
parties in interest. 
  

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 ARTICLE XX. 
 EFFECTIVE DATE 
 PARAGRAPH 
 1. The Plan shall not go into effect unless (a) it shall have been duly approved by the Stockholders of the Company; (b) rulings satisfactory to the Company with respect to the Plan shall have been obtained
under the Code and any other applicable legislation; (c) all other legal requirements pertaining to the Plan shall have been complied with; and (d) all other steps necessary for the operation of the Plan shall have been taken. Upon the
satisfaction of such conditions, the Plan shall go into effect on the first day of such month as the Board of Directors shall specify. 
  

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 ARTICLE XXI. 
 TOP-HEAVY RULES 
 PARAGRAPH 
 1. Minimum Contribution 
 If this Plan is top heavy in any Plan Year, the Plan guarantees a minimum contribution of
three percent (3%) of Compensation for each Non-key Employee who is a Participant employed by the Company on the last day of the Plan Year. If the contribution rate for the Key Employee with the highest contribution rate is less than three
percent (3%), the guaranteed minimum contribution for Non-key Employees under this paragraph 1. shall equal the highest contribution rate received by a Key Employee. The contribution rate is the sum of Company contributions (not including Company
contributions to Social Security) and any forfeitures allocated to the Participant’s Account for the Plan Year divided by his/her Compensation for the Plan Year taking into consideration amounts contributed as a result of a salary reduction
arrangement in determining the contributions made on behalf of Key Employees. All qualified defined contribution plans maintained by the Company shall be considered as a single plan for purposes of determining the contribution rate. For any year in
which the Plan is top heavy, each Non-key Employee shall receive a minimum contribution if not separated from service at the end of the Plan Year regardless of whether such Non-key Employee has declined to make any mandatory contribution otherwise
required by the Plan. 
 If this Plan is top heavy and any Participant in the Plan is a Participant in any other top-heavy defined contribution plan(s)
maintained by the Company, then this Plan shall provide the defined contribution plan minimum contribution for all such top-heavy defined contribution plans. 
 If any Participant in the Plan is also covered by a top-heavy defined benefit plan of the Company, the aggregate top-heavy minimum benefit requirement for such Participant for all plans affected shall be satisfied by such Participant
receiving a safe haven minimum defined contribution under this Plan equal to at least five percent (5%) of his/her Compensation for each Plan Year such plans are top-heavy, all in accordance with and pursuant to the provisions of Treasury
Regulations, Section 1.416-1, M-12, and any amendment thereto. 
 2. Rate of Minimum Contribution 
 To the extent the contribution rate with respect to a Non-key Employee for a Plan Year as described in paragraph 1. above, is less than the minimum contribution, the
Company will increase its contribution for such Employee to the extent necessary so his/her contribution rate for the Plan Year shall equal the guaranteed minimum contribution. The required additional contribution shall be made from net profits of
the Company to the extent available, but if for a particular Plan Year there are no profits out of which to make contributions to the Plan, the Company shall nevertheless make the minimum guaranteed contribution for each Non-key Employee. The
Committee shall allocate the additional contribution to the account of the Non-key Employee for whom the Company makes the contribution. 
  

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 3. Top-Heavy Status Determination 
 The Plan is top heavy for a Plan Year if the top-heavy ratio as of the Determination Date exceeds sixty percent (60%). The top-heavy ratio is a fraction, the numerator of which is the present value of the Accrued
Benefit of all Key Employees as of the Determination Date, the contributions due as of the Determination Date, and distributions made within the five (5)-year period immediately preceding the Determination Date, and the denominator of which is a
similar sum determined for all Participants under this Plan; provided, that if any individual has not performed services for the Company at any time during the five (5)-year period ending on the Determination Date, any accrued benefit for such
individual (and on account of such individual) shall not be taken into account. The foregoing determination of top-heaviness, and the top-heavy ratio shall also apply to distributions under a terminated plan which if it had not been terminated would
have been required to be included in an aggregation group including the Plan. The Committee shall calculate the top-heavy ratio without regard to any Non-key Employee who was formerly a Key Employee. The Committee shall calculate the top-heavy
ratio, including the extent to which it must take into account any distributions, rollovers, and other transfers, in accordance with Code Section 416 and the regulations thereunder. 
 If the Company maintains any other qualified plans, this Plan is a top-heavy plan only if it is part of the Top-Heavy Aggregation Group, and the top-heavy ratio for both the Top-Heavy Aggregation Group and the
Additional Aggregation Group exceeds sixty percent (60%). The Committee shall calculate the top-heavy ratio and determine top-heavy status for the aggregation of plans for a particular year by the following procedures: 
 A. The present value of accrued benefits (including distribution to Key Employees) is determined separately for each plan as of each plan’s Determination Date;

 B. The plans are then aggregated by adding together the results for each plan as of the Determination Dates for such plans that fall within the same
calendar year, and 
 C. The combined results shall indicate whether or not the plans so aggregated are top heavy. 
 4. Top-Heavy Contribution Limits 
 If the Plan is a top-heavy plan,
paragraphs 2(B) and 3(B) of Code Section 415(e) shall be applied by substituting “1.0” for “1.25” therein. Such substitution need not be made if the minimum contribution provided for under paragraph 1. of this Article XXI is
applied by substituting “four percent (4%)” for “three percent (3%)” therein, and if the Plan would not be a top-heavy plan if “ninety percent (90%)” were substituted for “sixty percent (60%)” wherever it
appears in paragraph 3. of this Article XXI. 
 5. Vesting 
 The vesting in Plan benefits for Participants provided in paragraph 1. of Article XI, shall be applicable to this Plan as a top-heavy plan. 
  

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 6. Definitions 
 For
purposes of applying the provisions of this Article XXI, the following definitions shall be applicable: 
 A. “Key Employee” means as of any
Determination Date, any Participant or former Employee (and his/her beneficiaries) who at any time during the Plan Year (which includes the Determination Date) or during the four (4) preceding Plan Years, is (i) an officer of the Company
having an annual compensation greater than fifty percent (50%) of the amount in effect under Code Section 415(b)(1)(A) for any such Plan Year; (ii) one (1) of the top ten (10) Employees having annual compensation from the
Company of more than the limitation in effect under Code Section 415(c)(1)(A) and owning (or considered as owning within the meaning of Code Section 318) the largest interests in the Company; (iii) a five-percent (5%) owner of
the Company, or (iv) a one-percent (1%) owner of the Company who has total annual compensation from the Company of more than one hundred fifty thousand dollars ($150,000). For purposes of clause (i) above, no more than fifty
(50) Employees (or, if lesser, the greater of three or ten percent (3 or 10%) of the Employees) shall be treated as officers. For purposes of clause (ii) above, if two (2) Employees of the Company have the same interest in the
Company, the Employee having the greater annual compensation from the Company shall be treated as having the larger interest. Such term shall not include any officer or employee of an entity referred to in Code Section 414(d); and for purposes
of determining the number of officers taken into account under clause (I), employees described in Code Section 414(q)(8) shall be excluded. 
 B.
“Non-key Employee” means a Participant who does not meet the definition of Key Employee, and such Participant’s beneficiary or beneficiaries. 
 C. “Five percent (5%) owner” means any person who owns (or is considered as owning within the meaning of Code Section 318) more than five percent (5) of the outstanding stock of the Company or stock possessing more
than five percent (5%) of the total combined voting power of all stock of the Company. 
 D. “One percent (1%) owner” means any person
who would be described in subparagraph c., above, if “one percent (1%)” were substituted for “five percent (5%)” each place it appears in subparagraph c., above. 
 For purposes of the foregoing, subparagraph (C) of Code Section 318(a)(2) shall be applied by substituting “five percent (5%)” for “fifty percent (50%);” the rules of Subsection (b),(c),
and (m) of Code Section 414 shall not apply for purposes of determining ownership of the Company; and the term “compensation” shall have the meaning given such term by Code Section 414(q)(7). 
 E. “Accrued Benefit” shall mean the amount of the Participant’s account under this Plan as of any particular date derived. 
 F. “Compensation” means the first two hundred thousand dollars ($200,000) (or greater amount prescribed hereafter by the Internal Revenue Service) of the
Participant’s total annual compensation, which includes the Participant’s earned income, wages, salaries, fees, for professional service and other amounts received for personal services actually rendered in the course of employment with
the Company (including, but not limited to, commissions paid 

  

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salesmen, compensation for services on the basis of a percentage of profits, commissions on insurance premiums, tips and bonuses). The term
“Compensation” shall not include: 
  

	 	1.	Company contributions to a plan of deferred compensation to the extent the contributions are not included in the gross income of the Employee for the taxable year in which
contributed, on behalf of an Employee to a Simplified Employee Pension Plan to the extent such contributions are deductible by the Employee, and any distributions from a plan of deferred compensation, regardless of whether such amounts are
includible in the gross income of the Employee when distributed. 

  

	 	2.	Amounts realized from the exercise of a non-qualified stock option, or when restricted stock (or property) held by an Employee either becomes freely transferable or is no longer
subject to a substantial risk of forfeiture. 

  

	 	3.	Amounts realized from the sale, exchange, or other disposition of stock acquired under a qualified stock option. 

  

	 	4.	Other amounts which receive special tax benefits, such as premiums for group term life insurance (but only to the extent that the premiums are not includible in the gross income of
the Employee), or contributions made by an Employer (whether or not under a salary reduction agreement) towards the purchase of an annuity contract described in Code 403(b) (whether or not the contributions are excludible from the gross income of
the Employee). 

 The provisions of this subparagraph F. shall apply solely to purposes of this Article XXI, and such compensation is those
amounts actually paid or made available to a Participant or includible in his/her gross income within the limitation year for this Plan. 
 G.
“Top-Heavy Aggregation Group” means each qualified plan of the Company in which at least one (1) Key Employee participates (in the Plan Year containing the Determination Date or any of the four (4) preceding Plan Years) and any
other qualified plan of the Company which, when considered with such qualified plans with Key Employee participants, enables such plans (those with at least one (1) Key Employee) to meet the coverage and nondiscrimination rules of
Section 401(a)(4) or 410 of the Internal Revenue Code. 
 H. “Additional Aggregation Group” means the Top-Heavy Aggregation Group plus any
other qualified plans maintained by the Company, but only if such group would satisfy in the aggregate the requirements of Sections 401(a)(4) and 410 of the Internal Revenue Code. The Committee shall determine which plan or plans to consider in
determining the Additional Aggregation group. 
 I. “Determination Date” for any Plan Year is the last day of the preceding Plan Year. 

J. “Valuation Date” means the annual date on which Plan assets are to be valued hereunder for the purpose of determining the value of account balances,
which occurred most recently within a twelve (12)-month period ending on the determination date. 
  

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 ARTICLE XXII. 
 TRANSFERRED SUBSIDIARY PLAN ACCOUNTS 
 PARAGRAPH 
 1. General 
 If a Participant was a participant in a defined
contribution plan of a subsidiary of the Company that is subject to Code Sections 401(a)(11) and 417 with respect to that Participant, from which assets in which the Participant had a vested account and benefits have been transferred directly or
indirectly on or after January 1, 1985, to the Trust of this Plan pursuant to paragraphs 1. and 2. of Article V, that vested account and benefits (hereinafter referred to as “Transferred Participant Account”) of the Participant shall
be held, invested, maintained and distributed in accordance with this Article XXII. 
 2. Separate Accounting and Accrual 
 A Participant’s Transferred Participant Account shall be accounted for separately from all other of his/her contributions hereunder and the Company’s
contributions to his/her regular Participant Account. The Participant’s rights in his/her accrued benefit derived from his/her Transferred Participant Account shall be nonforfeitable, and any income and earnings therefrom and accretions
thereon, shall be separately accounted for and become vested in such Participant immediately upon receipt thereof by the Trustee of such income, earnings and accretions, and (subject to subsequent loss through decline in value of investments) and
the Participant may not thereafter be deprived of such funds under any provision of the Plan. 
 3. Other Plan Provisions Applicable 
 Except as otherwise provided in this Article XXII, the Transferred Participant Account of any Participant shall be separately held, accounted for, and distributed, but in
the same manner and subject to the same rules, requirements, and limitations as generally apply to a Participant’s account under all provisions of this Plan. 
 4. ONEOK Drilling Plan Transferred Account Annuity Conversion 
 Subject to the provisions of paragraphs 5. through 10. of this Article XXII,
below, a Participant who has a Transferred Participant Account from a transfer thereof to the Trust of this Plan from the trust of the ONEOK Drilling Company Profit-Sharing Thrift Plan (“ONEOK Drilling Company Plan”) may elect distribution
of such Transferred Participant Account in one (1) or a combination of (i) conversion of such Transferred Participant Account to annuities under a group annuity contract of the type provided by the ONEOK Drilling Company Plan at the time
of transfer of the Transferred Participant Account to the Trust of this Plan, if reasonably available, with distributions being made pursuant to the terms and conditions thereof and in such amounts and for such durations as specified in said group
annuity contract, or (ii) conversion of such Transferred Participant Account to annuities under an annuity contract or contracts selected and approved by the Committee with terms and provisions comparable to such group annuity contract
available under the ONEOK Drilling Company Plan at the time of such transfer, or (iii) payment in a single lump-sum. 
  

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 5. Distributions 
 Subject to paragraphs 8. and 9., below, the Transferred Participant Account of a Participant shall not be distributed under a method of payment which, as of the Required Beginning Date, does not satisfy the minimum distribution requirements
established by this Article XXII or paragraph 10. of Article XI, or which is not consistent with Treasury regulations. The minimum distribution for a calendar year equals the Participant’s nonforfeitable accrued benefit in his/her Transferred
Participant Account at the beginning of the year divided by the Participant’s life expectancy or, if applicable, the life expectancy of such Participant and his/her designated beneficiary. For the purposes of this Article XXII, the
“Required Beginning Date” shall mean the latest date for distribution to a Participant stated in paragraph 10. of Article XI. In computing a minimum distribution, the life expectancy multiples under Treasury Regulations,
Section 1.72-9 shall be used. For purposes of such computation, a Participant’s life expectancy may be recalculated no more frequently than annually, but the life expectancy of a nonspouse beneficiary may not be recalculated. If the
Participant’s spouse is not the designated beneficiary, the method of distribution selected must provide that the present value of the payments to be made to the Participant is more than fifty percent (50%) of the present value of the
total payments to the Participant and his/her beneficiaries. 
 6. Consent of Distribution 
 A Participant and the spouse of the Participant (or where the Participant has died, the surviving spouse) must consent to the form of the distribution of the Transferred
Participant Account the Committee directs the Trustee to make if: (i) the present value of the Participant’s nonforfeitable accrued benefit exceeds five thousand dollars ($5,000); (ii) the Qualified Joint and Survivor Annuity
provisions stated below in this Article XXII apply to the distribution; and (iii) a distribution in a form other than a Qualified Joint and Survivor Annuity is to be made. 
 7. Time of Distribution 
 If distribution of a Participant’s Transferred
Participant Account in other than lump-sum is authorized by this Article XXII, then upon the death of the Participant, the Participant’s Transferred Participant Account shall be paid in accordance with this paragraph. If the Participant’s
death occurs after payment of the Participant’s Transferred Participant Account has begun, payment thereof shall be completed over a period which does not exceed the payment period which had commenced. If the Participant’s death occurs
prior to the time payment of the Participant’s benefit from the Transferred Participant Account has begun, the payment thereof shall be made over a period not exceeding (i) five (5) years after the date of the Participant’s
death, or (ii) if the beneficiary is a designated beneficiary, over the designated beneficiary’s life expectancy; but payment of the Participant’s Transferred Participant Account over a period described in (ii) shall not be made
unless such payment to the designated beneficiary begins no later than one (1) year after the date of the Participant’s death or, if later, and the designated beneficiary is the Participant’s surviving spouse, the date the Participant
would have attained age seventy and one-half (70 1/2). 
  

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 8. Qualified Joint and Survivor Annuity; Qualified Preretirement Survivor Annuity 
 For Plan Years beginning after December 31, 1984, the Committee shall direct the Trustee to distribute a married or unmarried Participant’s Transferred
Participant Account, otherwise payable in annuity form, in the form of a Qualified Joint and Survivor Annuity or a Qualified Preretirement Survivor Annuity, unless the Participant makes a valid election to waive the Qualified Joint and Survivor
Annuity or Qualified Preretirement Survivor Annuity under paragraph 9. of this Article XXII, below. 
 “A Qualified Joint and Survivor Annuity” is
an annuity which is purchasable with the Participant’s Transferred Participant Account and which is payable for the life of the Participant with, if the Participant is married on the Annuity Starting Date, a survivor annuity payable for the
life of the Participant’s surviving spouse equal to fifty percent (50%) of the amount of the annuity payable during the joint lives of the Participant and his/her spouse, and which is the actuarial equivalent of a single annuity for the
life of the Participant. On or before the Annuity Starting Date, the Committee, in its sole discretion without Participant or spousal consent, may direct the Trustee to pay the Participant’s Transferred Participant Account in a lump sum, in
lieu of a Qualified Joint and Survivor Annuity, if the present value of the Participant’s Transferred Participant Account (excluding accumulated deductible employee contributions) does not exceed five thousand dollars ($5,000). 
 If a married Participant dies before the Annuity Starting Date and such Participant has a surviving spouse, the Committee shall direct the Trustee to distribute the
Participant’s Transferred Participant Account to the Participant’s surviving spouse in the form of a Qualified Preretirement Survivor Annuity, unless the Participant has a valid waiver election in effect. A “Qualified Preretirement
Survivor Annuity” is an annuity which is actuarially equivalent to fifty percent (50%) of the Participant’s Transferred Participant Account (determined as of the date of the Participant’s death) and which is payable for the life
of the Participant’s surviving spouse. Any security interest held by reason of a loan outstanding to the Participant shall be taken into account in determining the amount of the Qualified Preretirement Survivor Annuity. The Participant’s
surviving spouse may elect to have the Trustee commence payment of the Qualified Preretirement Survivor Annuity within a reasonable period of time following the date of the Participant’s death. Furthermore, if the present value of the
Participant’s Transferred Participant Account exceeds five thousand dollars ($5,000), the Committee shall not direct the Trustee to distribute the Qualified Preretirement Survivor Annuity to the Participant’s surviving spouse prior to the
date the Participant would have attained age sixty-five (65) without the written consent of the surviving spouse. The Committee, in its sole discretion, may direct the Trustee to make a lump-sum distribution to the Participant’s surviving
spouse in lieu of a Qualified Preretirement Survivor Annuity, if the present value of the Participant’s Transferred Participant Account is not greater than five thousand dollars ($5,000). 
 If the Participant has in effect a valid waiver election regarding the Qualified Joint and Survivor Annuity or the Qualified Preretirement Survivor Annuity, the
Committee shall direct the Trustee to distribute the Participant’s Transferred Participant Account in accordance with paragraphs 3. and 4., above. For purposes of applying this Article XXII, the Committee shall treat a former spouse as the
Participant’s spouse or surviving spouse to the extent provided under a Qualified Domestic Relations Order (as defined in Code Section 414(p)). 
  

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 9. Notices; Waiver Election 
 Within the Applicable Notice Period with respect to such Participant, the Company shall provide the Participant a written explanation of the terms and conditions of the Qualified Joint and Survivor Annuity, the Participant’s right to
make and the effect of an election to waive the Qualified Joint and Survivor Annuity form of benefit, the rights of the Participant’s spouse to consent to such a waiver election, and the right to make and the effect of a revocation of the
Participant’s waiver election. A Participant may elect at any time during the Applicable Election Period to waive the Qualified Joint and Survivor Annuity form of benefit. The Participant may revoke a waiver of the Qualified Joint and Survivor
Annuity or make a new waiver at any time during the Applicable Election Period. 
 The Annuity Starting Date for a distribution in a form other than a
Qualified Joint and Survivor Annuity may be less than thirty (30) days after receipt of the written explanation described in the preceding paragraph provided: (1) the Participant has been provided with information that clearly indicates
that the Participant has at least thirty (30) days to consider whether to waive the Qualified Joint and Survivor Annuity and elect (with spousal consent) to a form of distribution other than a Qualified Joint and Survivor Annuity; (2) the
Participant is permitted to revoke any affirmative distribution election at least until the Annuity Starting Date or, if later, at any time prior to the expiration of the 7-day period that begins the day after the explanation of the Qualified Joint
and Survivor Annuity is provided to the Participant; and (3) the Annuity Starting Date is a date after the date that the written explanation was provided to the Participant. 
 A married Participant’s waiver election is not valid after December 31, 1984, unless (i) the Participant’s spouse (to whom the survivor annuity is payable under the Qualified Joint and Survivor
Annuity) has consented in writing to the waiver election, (ii) such election designates a beneficiary (or form of benefit) which may not be changed without spousal consent (or the consent of the spouse expressly permits designations by the
Participant without any requirement of further consent by the spouse), and (iii) the spouse’s consent acknowledges the effect of the election, and a notary public or the Company (or its Plan representative) witnesses the spouse’s
consent. The spouse’s consent to a waiver of the Qualified Joint and Survivor Annuity shall be irrevocable unless the Participant revokes the waiver election. 
 The Company may accept as valid a waiver election which does not satisfy the spousal consent requirements, if the Company establishes the Participant does not have a spouse, the Company is not able to locate the Participant’s spouse,
or other circumstances exist under which the Treasury Regulations excuse the consent requirement. 
 Notwithstanding the foregoing, a Qualified Joint and
Survivor Annuity and Qualified Preretirement Survivor Annuity will not be provided unless the Participant and spouse had been married throughout the one-year period ending on the earlier of (i) the Participant’s Annuity Starting Date or
(ii) the date of the Participant’s death; except that if a Participant marries within one (1) year before the Annuity Starting Date, and the Participant and the Participant’s spouse in such marriage have been married for at least
a one-year period ending on or before the date of the Participant’s death, such Participant and such spouse shall be treated as having been married throughout the one-year period ending on the Participant’s Annuity Starting Date.

  

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 With respect to any Participant’s Transferred Participant Account subject to paragraph 8., the Company shall provide
to each Participant, within the Applicable Notice Period with respect to such Participant in a manner consistent with Treasury Regulations, a written explanation of the terms and conditions of the Qualified Preretirement Survivor Annuity comparable
to the explanation of the Qualified Joint and Survivor Annuity required hereunder. If the Participant’s Transferred Participant Account is not subject to paragraph 8. above prior to the time the Company must provide the written explanation of
the Qualified Preretirement Survivor Annuity, the Company shall provide the written explanation within a reasonable period consistent with Treasury Regulations following the time the Participant’s Transferred Participant Account first is
subject to this Article XXII, but not later than the close of the second Plan Year following the Plan Year in which the Participant enters the Plan or first becomes subject to paragraph 8. A Participant may elect at any time during the Applicable
Election Period to waive the Qualified Preretirement Survivor Annuity form of benefit. A Participant may revoke a waiver of the Qualified Preretirement Survivor Annuity or make a new waiver at any time during the Applicable Election Period.

 A Participant’s waiver election of the Qualified Preretirement Survivor Annuity is not valid unless (i) the Participant makes the waiver
election no earlier than the first day of the Plan Year in which he/she attains age thirty-five (35), and (ii) after December 31, 1984, the Participant’s spouse (to whom the Qualified Preretirement Survivor Annuity is payable)
satisfies the consent requirements described above. The spouse’s consent to a waiver of the Qualified Preretirement Survivor Annuity is irrevocable unless the Participant revokes the waiver election. Irrespective of the time of election
requirement described in (I), if the Participant separates from service prior to the first day of the Plan Year in which he/she attains age thirty-five (35), the Company may accept a waiver election with respect to the Transferred Participant
Account attributable to his/her service prior to his/her separation from service. 
 10. Definitions; and Applicable Rules 
 For purposes of paragraphs 8. and 9. of this Article XXII, the term “Annuity Starting Date” means with respect to the Participant’s Transferred Participant
Account (i) the first day of the first period for which an amount is payable as an annuity, or (ii) in the case of a benefit not payable in the form of an annuity, the first day on which all events have occurred which entitle the
Participant to such benefit. 
 The term “Earliest Retirement Age” means the earliest date on which, under the Plan, the Participant could elect to
receive retirement benefits with respect to his/her Transferred Participant Account. The term “Applicable Notice Period” means, with respect to a Qualified Joint and Survivor Annuity for a Participant, a reasonable period of time of not
less than thirty (30) days and not more than ninety (90) days before the Annuity Starting Date (as consistent with applicable Treasury Regulations). 
 With respect to a Qualified Preretirement Survivor Annuity for a Participant, the “Applicable Notice Period” means whichever of the following periods ends last: (i) the period beginning with the first day of the Plan Year in
which the Participant attains age thirty-two (32) and ending with the close of the Plan Year preceding the Plan Year in which the Participant attains age thirty-five (35); (ii) a reasonable period after the individual becomes a
Participant; (iii) a reasonable period 

  

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ending after the Plan ceases to fully subsidize costs of the benefit, if applicable; or (iv) a reasonable period ending after Code
Section 401(a)(11) applies to the Participant provided that in the case of a Participant who separates from service before attaining age thirty-five (35), the Applicable Notice Period shall be a reasonable period after separation. 

The term “Applicable Election Period” means (i) with respect to a Qualified Joint and Survivor Annuity, the ninety-day (90) period ending on the
Annuity Starting Date and (ii) with respect to a Qualified Preretirement Survivor Annuity, the period which begins on the first day of the Plan Year in which the Participant attains age thirty-five (35) and ends on the Participant’s
death. 
 The present value of a qualified joint and survivor annuity benefit or a qualified preretirement survivor annuity benefit shall be calculated by
using the Applicable Mortality Table and the Applicable Interest Rate. For purposes of the preceding sentence the term “Applicable Mortality Table” shall mean the table prescribed by the Secretary of Treasury, pursuant to Code
Section 417(e)(3)(A)(i)(I) (or corresponding provision of any future federal tax code), and the term “Applicable Interest Rate” shall mean the annual rate of the interest on 30-year Treasury securities for the month before the date of
distribution or such other time as may be prescribed by Treasury Regulations under Code Section 417(e)(3)(A)(i)(II) (or corresponding provision of any future federal tax code). Provided, notwithstanding the foregoing, for this Plan, which was
adopted and in effect before the date of the enactment of the Retirement Protection Act of 1994, the present value of any distribution made before the earlier of (i) the later of the date an amendment to this Plan applying the rule for
calculating present value first stated above is adopted or made effective, or (ii) the first day of the first Plan Year beginning after December 31, 2000, the present value of any distribution shall be calculated by using the interest rate
determined under the regulations of the Pension Benefit Guaranty Corporation for determining the present value of a lump sum distribution on plan termination that were in effect on September 1, 1993, and by using the provisions of the Plan as
in effect on the day before such date of enactment but only if such provisions of the Plan met the requirements of Code Section 417(e)(3) as in effect on the day before such date of enactment. 
  

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 ARTICLE XXIII. 
 NGC PROFIT SHARING/401(k) SAVINGS PLAN 
 TRANSFERRED ACCOUNTS 
 PART A. 
 General
Provisions/Administration of Transferred NGC Accounts 
 PARAGRAPH 
 1. General 
 If a Participant was a participant in the NGC Profit Sharing/401(k) Savings Plan (“NGC Plan”)
from which assets in which the Participant had a vested account and benefits have been transferred directly to the Trust of this Plan pursuant to Paragraph 3 of Article V, that vested account and benefits (hereinafter referred to as
“Transferred NGC Account”) of the Participant shall be held, invested, maintained, administered and distributed in accordance with this Article XXIII. 
 2. Separate Accounting and Accrual 
 A Participant’s Transferred NGC Account shall be accounted for separately from all other of his/her
contributions hereunder and the Company’s contributions to his/her regular Participant Account. The Participant’s rights in his/her accrued benefit derived from his/her Transferred NGC Account shall be fully vested and nonforfeitable, and
any income and earnings therefrom and accretions thereon, shall be separately accounted for and become vested in such Participant immediately upon receipt thereof by the Trustee of such income, earnings and accretions, and (subject to subsequent
loss through decline in value of investments) and the Participant may not thereafter be deprived of such funds under any provision of the Plan. The Transferred NGC Account of a Participant shall be paid and distributed in the forms of benefit
provided under the NGC Plan prior to the transfer thereof to this Plan in such manner as is required to satisfy the applicable provisions of Section 411(d)(6) of the Code, and Treasury Regulations thereunder. 
 3. Other Plan Provisions Applicable 
 Except as otherwise provided in
this Article XXIII, the Transferred NGC Account of any Participant shall be separately held, accounted for, and distributed, but in the same manner and subject to the same rules, requirements, and limitations as generally apply to a
Participant’s Account or parts thereof pertinent under all provisions of this Plan. 
  

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 PART B. 
 Transferred NGC Accounts; Retirement Benefits 
 A Participant who terminates his/her employment on or after
his/her Normal Retirement Date shall be entitled to a retirement benefit, payable at the time and in the form provided in Part F of this Article XXIII, equal in value to the aggregate amount in his/her Transferred NGC Account on his/her Annuity
Starting Date. Any contribution or addition allocable to a Participant’s Transferred NGC Account after his/her Annuity Starting Date shall be distributed, if his/her benefit was paid in a lump sum, or used to increase his/her payments, if
his/her benefit is being paid on a periodic basis, as soon as administratively feasible after the date that such contribution or addition is paid to the Trust of the Plan. 
 PART C. 
 Transferred NGC Accounts; Disability Benefits 
 1. Disability Benefits 
 In the event a Participant’s employment
is terminated, and such Participant is totally and permanently disabled, as determined pursuant to Paragraph 2 of this Part C, below, such Participant shall be entitled to a disability benefit, payable at the time and in the form provided in Part F
of this Article XXIII equal in value to the aggregate amount in his/her Transferred NGC Account on his/her Annuity Starting Date. Any contribution or addition allocable to a Participant’s Transferred NGC Account after his/her Annuity Starting
Date shall be distributed, if his/her benefit was paid in a lump sum, or used to increase his/her payments, if his/her benefit is being paid on a periodic basis, as soon as administratively feasible after the date that such contribution or addition
is paid to the Trust of the Plan. 
 2. Total and Permanent Disability Determined 
 A Participant shall be considered totally and permanently disabled if the Committee determines, based on a written medical opinion (unless waived by the Committee as unnecessary), that such Participant is permanently
incapable of performing his/her job for physical or mental reasons. 
 PART D. 
 Transferred NGC Accounts; Severance Benefits 
 Each Participant whose employment is terminated prior to his/her Normal Retirement Date for any reason other than total and permanent disability (as defined in Paragraph 2 of Part C of this Article XXIII) or death shall be entitled to a
severance benefit, payable at the time and in the form provided in Part F of this Article XXIII, equal in value to his/her Vested Interest in the aggregate amount in his/her Transferred NGC Account on his/her Annuity Starting Date. A
Participant’s Vested Interest in any contribution allocable to such Participant’s Transferred NGC Account after his/her Annuity Starting Date shall be distributed, if his/her benefit was paid in a lump sum, or used to increase his/her
payments, if his/her benefit is being paid on a periodic basis, as soon as administratively feasible after the date that such contribution is paid to the Trust of the Plan. 
  

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 PART E. 
 Transferred NGC Accounts; Death Benefits 
 Upon the death of a Participant while an Employee, the
Participant’s Eligible Surviving Spouse or designated beneficiary shall be entitled to a death benefit, payable at the time and in the form provided in Part F of this Article XXIII, equal in value to the aggregate amount in his/her Transferred
NGC Account on his/her Annuity Starting Date. Any contribution allocable to a Participant’s Transferred NGC Account after his/her Annuity Starting Date shall be distributed, if his/her benefit was paid in a lump sum, or used to increase
payments, if his/her benefit is being paid on a periodic basis, as soon as administratively feasible after the date that such contribution is paid to the Trust of the Plan. 
 PART F. 
 Transferred NGC Accounts; Time and Form of Payment of
Benefits 
 1. Time of Payment 
 A. Subject to the
provisions of the remaining Paragraphs of this Part, a Participant’s Annuity Starting Date shall be the date that is as soon as administratively feasible after the date the Participant or his/her beneficiary becomes entitled to a benefit
pursuant to Parts B, C, D and E, of this Article XXIII, but no earlier than the expiration of the seven-day period that begins the day after the information required to be furnished pursuant to Paragraph 2(C) of this Part F, has been furnished to
the Participant. 
 B. Unless a Participant (1) has attained age sixty-five, (2) has died (A) without leaving an Eligible Surviving Spouse or
(B) with an election in effect, pursuant to Paragraph 3(b) of this Part F, not to receive the standard death benefit set forth in Paragraph 3(a) of this Part F, or (3) consents to a distribution pursuant to Paragraph 1(a) of this Part F,
and, if such Participant has an Eligible Surviving Spouse, unless such Eligible Surviving Spouse consents (with such consent being irrevocable) in accordance with the requirements of section 417 of the Code and applicable Treasury regulations
thereunder) within the ninety-day period ending on the date payment of his/her benefit hereunder is to commence pursuant to Paragraph 1(a) of this Part F, his/her Annuity Starting Date shall be deferred to the date which is as soon as
administratively feasible after the date the Participant attains (or would have attained) age sixty-five, or such earlier date as the Participant (with the consent of his/her Eligible Surviving Spouse, if applicable) may elect by written notice to
the Committee prior to such date. Consent of the Participant’s Eligible Surviving Spouse under this Paragraph shall not be required if the Participant’s benefit is to be paid in the form of the standard benefit described in this part. The
Committee shall furnish information pertinent to his/her consent to each Participant no less than thirty days (unless such thirty-day period is waived by an affirmative election in accordance with applicable Treasury regulations) and no more than
ninety days before his/her Annuity Starting Date, and the furnished information shall include a general description of the material features of, and an explanation of the relative values of, the alternative forms of benefit available under the Plan
and must inform the Participant of his/her right to defer his/her Annuity Starting Date and of his/her Direct Rollover right pursuant to Paragraph 5 of this Part F, below, if applicable. In the case of a married Participant who dies before his/her
Annuity Starting Date without electing not to receive the standard death benefit set forth in Paragraph 3A of this Part F, the consent and election set forth in this Paragraph may be made by his/her Eligible Surviving Spouse. 
  

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 C. A Participant’s Annuity Starting Date shall in no event be later than the sixtieth day following the close of the
Plan Year during which such Participant attains, or would have attained, his/her Normal Retirement Date or, if later, terminates his/her employment with the Company. 
 D. A Participant’s Annuity Starting Date shall be in compliance with the provisions of section 401(a)(9) of the Code and applicable Treasury regulations and shall in no event be later than: 
  

	 	 1.
	 For Participants attaining age seventy and one-half (70 1/2) before January 1, 1999, April 1 of the calendar year following the calendar year in which such Participant attains the age of seventy
and one-half (70 1/2); 

  

	 	 2.
	 For Participants attaining age seventy and one-half (70 1/2) after December 31, 1998, April 1 of the calendar year following the later of (A) the calendar year in which such Participant
attains the age of seventy and one-half (70 1/2) or (B) the calendar year in which such Participant
terminates his/her employment with the Employer (provided, however, that clause (B) of this sentence shall not apply in the case of a Participant who is a “five-percent owner” (as defined in section 416 of the Code) with respect to
the Plan Year ending in the calendar year in which such Participant attains the age of seventy and one-half (70 1/2); and 

  

	 	 3.
	 In the case of a benefit payable pursuant to Part E of this Article XXIII, (A) if payable to other than the
Participant’s spouse, the last day of the one-year period following the death of such Participant or (B) if payable to the Participant’s spouse, after the date upon which such Participant would have attained the age of seventy and
one-half (70 1/2), unless such surviving spouse dies before payments commence, in which case the Annuity Starting
Date may not be deferred beyond the last day of the one-year period following the death of such surviving spouse. 

 The preceding provisions of this Part F, notwithstanding, a Participant may not elect to defer the receipt of his/her benefit hereunder to the extent that such deferral creates a death benefit that is more than
incidental within the meaning of section 401(a)(9)(G) of the Code and applicable Treasury regulations thereunder. Further, in determining compliance with the provisions of section 401(a)(9) of the Code, the life expectancies of a Participant and the
Participant’s spouse shall not be recalculated after the Annuity Starting Date. Finally, a Participant (other than a Participant who is a “five-percent owner” (as defined in section 416 of the Code) with respect to the Plan Year
ending in the calendar year in which such Participant attains the age of seventy and one-half (70 1/2) who
attains age seventy and one-half (70 1/2) in calendar years 1996, 1997, or 1998 may elect to defer his/her
Annuity Starting Date until no later than April 1 of the calendar year following the later of (A) the calendar year in which such Participant attains the age of seventy and one-half (70 1/2) or (B) the calendar year in which such Participant terminates his/her employment with the Employer, provided, that such election is made by the
later of the end of the calendar year in which such Participant attains age seventy and one-half (70 1/2) or
December 31, 1997. 
  

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 E. Subject to the provisions of Subparagraph (D), a Participant’s Annuity Starting Date shall not occur unless the
events under Parts B, C, D and E of this Article XXIII entitling the Participant (or his/her beneficiary) to a benefit constitutes a distributable event described in section 401(k)(2)(B) of the Code and shall not occur while the Participant is
employed by the Employer or any Controlled Entity (irrespective of whether the Participant has become entitled to a distribution of his/her benefit pursuant to Part B, C, D, or E of this Article XXIII). 
 F. Subparagraphs (A), (B) and (C), above, notwithstanding, a Participant whose vested interest in his/her Transferred NGC Account is $5,000 or more may elect to
defer his/her Annuity Starting Date beyond the date specified in such subparagraphs, subject to the provisions of Subparagraph (D), above, by submitting to the Committee a written statement, signed by the Participant, which describes the benefit and
designates the date on which the payment of such benefit shall commence. 
 2. Standard and Alternative Forms of Benefit for Participants 

A. For purposes of Parts B, C or E of this Article XXIII, the standard benefit for any Participant who is married on his/her Annuity Starting Date shall be a joint and
survivor annuity. Such joint and survivor annuity shall be a commercial annuity which is payable for the life of the Participant with a survivor annuity for the life of the Participant’s Eligible Surviving Spouse which shall be one-half of the
amount of the annuity payable during the joint lives of the Participant and the Participant’s Eligible Surviving Spouse. The standard benefit for any Participant who is not married on his/her Annuity Starting Date shall be a commercial annuity
which is payable for the life of the Participant. 
 B. Any Participant who would otherwise receive the standard benefit may elect not to take his/her
benefit in such form by executing the form prescribed by the Committee for such election during the election period described in Subparagraph (C), below. Any election may be revoked and subsequent elections may be made or revoked at any time during
such election period. Notwithstanding the foregoing, an election by a married Participant not to receive the standard benefit as provided in Subparagraph (A), above, shall not be effective unless (1) the Eligible Surviving Spouse has consented
thereto in writing (including consent to the specific designated beneficiary to receive payments following the Participant’s death or to the specific benefit form elected, which designation or election may not subsequently be changed by the
Participant without spousal consent) and such consent acknowledges the effect of such election and is witnessed by a Plan representative (other than the Participant) or a notary public, or (2) the consent of such spouse cannot be obtained
because the Eligible Surviving Spouse cannot be located or because of other circumstances described by applicable Treasury regulations. Any such consent by such Eligible Surviving Spouse shall be irrevocable. 
 C. The Committee shall furnish certain information, pertinent to the Subparagraph (B) election, to each Participant no less than thirty (30) days (unless such
thirty-day period is waived by an affirmative election in accordance with applicable Treasury regulations) and no more than ninety (90) days before his/her Annuity Starting Date. The furnished information shall include 

  

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an explanation of (1) the terms and conditions of the standard benefit, (2) the Participant’s right to elect to waive the standard benefit and
the effect of such election, (3) the rights of the Participant’s Eligible Surviving Spouse, if any, (4) the right to revoke such election and the effect of such revocation, (5) a general description of the eligibility conditions
and other material features of the alternative forms of benefit available pursuant to Subparagraph (D), below, and (6) sufficient additional information to explain the relative values of such alternative forms of benefit. The period of time
during which a Participant may make or revoke such election shall be the ninety-day period ending on such Participant’s Annuity Starting Date provided that such election may also be revoked at any time prior to the expiration of the seven-day
period that begins the day after the information required to be furnished pursuant to this Paragraph has been furnished to the Participant. 
 D. For
purposes of Parts B, C or D of this Article XXIII, the benefit for any Participant who has elected not to receive the standard benefit shall be paid in one of the following alternative forms to be selected by the Participant or, in the absence of
such election, by the Committee; provided, however, that the period and method of payment of any such form shall be in compliance with the provisions of section 401(a)(9) of the Code and applicable Treasury regulations thereunder: 
  

	 	1.	A commercial annuity in the form of a single life annuity for the life of such Participant. 

  

	 	2.	A commercial annuity (a) for the joint lives of the Participant and any person designated by the Participant, (b) for a term certain (of 5, 10, or 15 years) and continuous
for the life of the Participant if he/she survives such term certain, or (c) for a term certain to the Participant and any designated beneficiary of the Participant if the Participant does not survive such term certain.

  

	 	3.	A lump sum. 

  

	 	4.	Periodic installment payments to such Participant for a term certain or, in the event of such Participant’s death before the end of such term certain, to his/her designated
beneficiary; provided, however, that such term certain shall not exceed the lesser of (i) ten years or (ii) the life expectancy of the Participant or the joint and last survivor expectancy of the Participant and his/her designated
beneficiary. Upon the death of a beneficiary who is receiving installment payments under this Paragraph, the remaining balance in the Participant’s Transferred NGC Account shall be paid as soon as administratively feasible, in one lump sum cash
payment, to the beneficiary’s executor or administrator or to his/her heirs at law if there is no administration of such beneficiary’s estate. 

 The Annuity Starting Date for a distribution in a form other than a survivor annuity may be less than thirty (30) days after receipt of the written explanation described in the preceding paragraph provided:
(1) the Participant has been provided with information that clearly indicates that the Participant has at least thirty (30) days to consider whether to waive the survivor annuity and elect (with spousal consent) to a form of distribution
other than a survivor annuity; (2) the Participant is permitted to revoke any affirmative distribution election at least until the Annuity 

  

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Starting Date, or, if later, at any time prior to the expiration of the 7-day period that begins the day after the explanation of the survivor annuity is
provided to the Participant; and (3) the Annuity Starting Date is a date after the date that the written explanation was provided to the Participant. 
 E. If a Participant, who terminated his/her employment under circumstances such that he/she was entitled to a benefit pursuant to Parts B, C, or D, dies prior to his/her Annuity Starting Date, the amount of the benefit to which he/she was
entitled shall be paid pursuant to Paragraph 3 of this Part F, just as if such Participant had died while employed by the Employer except that his/her vested interest shall be determined pursuant to Parts B, C, or D, whichever is applicable.

 3. Standard and Alternative Forms of Death Benefit 
 A.
For purposes of Part E, the standard death benefit for a deceased Participant who leaves an Eligible Surviving Spouse shall be a survivor annuity. Such survivor annuity shall be a commercial annuity which is payable for the life of such Eligible
Surviving Spouse. 
 B. Any Participant who would otherwise have his/her death benefit paid in the standard survivor annuity form may elect not to have
his/her benefit paid in such form by executing the beneficiary designation form prescribed by the Committee and filing same with the Committee, designating a primary beneficiary other than his/her Eligible Surviving Spouse or electing some form of
payment other than a survivor annuity. Any election may be revoked and subsequent elections may be made or revoked at any time prior to a Participant’s date of death. 
 C. Subparagraph B., above, to the contrary notwithstanding: 
  

	 	1.	An election not to have the death benefit paid in the standard survivor annuity form as provided in Subparagraph A, above, shall not be effective unless (a) the Eligible
Surviving Spouse has consented thereto in writing and such consent (i) acknowledges the effect of such election, (ii) either consents to the specific designated beneficiary (which designation may not subsequently be changed by the
Participant without spousal consent) or expressly permits such designation by the Participant without the requirement of further consent by the spouse, and (iii) is witnessed by a Plan representative (other than the Participant) or a notary
public or (b) the consent of such spouse cannot be obtained because the Eligible Surviving Spouse cannot be located or because of other circumstances described by applicable Treasury regulations. Any such consent by such Eligible Surviving
Spouse shall be irrevocable. 

  

	 	2.	An election not to have the death benefit paid in the standard survivor annuity form may be made before the first day of the Plan Year in which a Participant attains the age of
thirty-five (35) only (a) after the Participant separates from service and only with respect to benefits accrued under the Plan before the date of such separation and (b) in the case of a Participant who has not separated from
service, if the Participant has been furnished the information described in Subparagraph D, with such election to become invalid upon the first day of the Plan Year in which the Participant attains the age of thirty-five (35), whereupon a new
election may be made by such Participant. 

  

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 D. The Committee shall furnish certain information pertinent to the Subparagraph B election to each Participant within
the period beginning with the first day of the Plan Year in which he/she attains the age of thirty-two (32) (but no earlier than the date such Participant begins participation in the Plan) and ending with the later of (1) the last day of
the Plan Year preceding the Plan Year in which the Participant attains the age of thirty-five (35), or (2) a reasonable time after the Employee becomes a Participant. If a Participant separates from service before attaining age thirty-five
(35), such information shall be furnished to such Participant within the period beginning one year before the Participant separates from service and ending one year after such separation. Such information shall also be furnished to a Participant who
has not attained the age of thirty-five (35) or terminated employment, within a reasonable time after written request by such Participant. The furnished information shall include an explanation of (1) the terms and conditions of the
survivor annuity, (2) the Participant’s right to elect to waive the survivor annuity and the effect of such election, (3) the rights of the Participant’s Eligible Surviving Spouse, (4) the right to revoke such election and
the effect of such revocation, (5) a general description of the eligibility conditions and other material features of the alternative forms of benefit available pursuant to Subparagraph F, below, and (6) sufficient additional information
to explain the relative value of such alternative forms of benefit. 
 E. In the event a survivor annuity is to be paid to a Participant’s Eligible
Surviving Spouse, such Eligible Surviving Spouse may elect to receive the benefit in one of the alternative forms set forth in Subparagraph 3F. Within a reasonable time after written request by such Eligible Surviving Spouse, the Committee shall
provide to such Eligible Surviving Spouse a written explanation of such survivor annuity form and the alternative forms of payment which may be selected along with the financial effect of each such form. 
 F. For purposes of Part E, the death benefit of a deceased Participant who is not survived by an Eligible Surviving Spouse or who has elected not to have his/her death
benefit paid in the standard survivor annuity form set forth in Subparagraph 3A. shall be paid to his/her designated beneficiary in one of the following alternative forms to be selected by such beneficiary or, in the absence of such selection, by
the Committee; provided, however, that the period and method of payment of any such form shall be in compliance with the provisions of section 401(a)(9) of the Code and applicable Treasury regulations thereunder: 
  

	 	1.	A commercial annuity in the form of a single life annuity for the life of the designated beneficiary. 

  

	 	2.	A lump sum. 

 G. If a deceased Participant who either is not survived by
an Eligible Surviving Spouse or has elected (with spousal consent) not to have his/her standard death benefit paid in the standard survivor annuity form set forth in Subparagraph 3A. does not have a valid beneficiary designation on file with
the Committee at the time of his/her death, the designated beneficiary or beneficiaries to receive such Participant’s death benefit shall be as follows: 
  

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	 	1.	If a Participant leaves an Eligible Surviving Spouse, his/her designated beneficiary shall be such Eligible Surviving Spouse; 

  

	 	2.	If a Participant leaves no Eligible Surviving Spouse, his/her designated beneficiary shall be (a) such Participant’s executor or administrator or (b) his/her heirs at
law if there is no administration of such Participant’s estate. 

 4. Cash-Out of Benefit 
 If a Participant terminates his/her employment and his/her vested interest in his/her Transferred NGC Account is not in excess of $5,000, such Participant’s benefit
shall be paid in one lump sum payment in lieu of any other form of benefit herein provided. Any such payment shall be made at the time specified in Subparagraph 1A. of this Part F, without regard to the consent restrictions of Subparagraph 1B. of
this Part F, and the election and spousal consent requirements of Paragraphs 2 and 3 of this Part F, except that a married Participant’s death benefit shall be paid to his/her Eligible Surviving Spouse unless another beneficiary has been
designated pursuant to the provisions of Subparagraph 3B. The provisions of this Paragraph shall not be applicable to a Participant following his/her Annuity Starting Date. 
 5. Direct Rollover Election 
 Notwithstanding any provision of the Plan to the contrary that would otherwise limit a
Distributee’s election under this Part F, a Distributee may elect, at the time and in the manner prescribed by the Committee, to have all or any portion of an Eligible Rollover Distribution (other than any portion attributable to the offset of
an outstanding loan balance of such Participant pursuant to the Plan’s loan procedure) paid directly to an Eligible Retirement Plan specified by the Distributee in a Direct Rollover. The preceding sentence notwithstanding, a Distributee may
elect a Direct Rollover pursuant to this Paragraph only if such Distributee’s Eligible Rollover Distributions during the Plan Year are reasonably expected to total $200 or more. Furthermore, if less than 100% of the Participant’s Eligible
Rollover Distribution is to be a Direct Rollover, the amount of the Direct Rollover must be $500 or more. Prior to any Direct Rollover pursuant to this Paragraph, the Committee may require the Distributee to furnish the Committee with a statement
from the plan, account, or annuity to which the benefit is to be transferred verifying that such plan, account, or annuity is, or is intended to be, an Eligible Retirement Plan. 
 6. Benefits from Account Balances 
 With respect to any benefit payable in any form pursuant to the Plan, such benefit
shall be provided from the Transferred NGC Account balance(s) to which the particular Participant or beneficiary is entitled. 
 7. Commercial Annuities

 At the direction of the Committee, the Trustee may pay any form of benefit provided hereunder other than a lump sum payment or a Direct Rollover
pursuant to Paragraph 5 of this Part F by the purchase of a commercial annuity contract and the distribution of such contract to the Participant or beneficiary. Thereupon, the Plan shall have no further liability with respect to the amount 

  

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used to purchase the annuity contract and such Participant or beneficiary shall look solely to the company issuing such contract for such annuity payments.
All certificates for commercial annuity benefits shall be nontransferable, except for surrender to the issuing company, and no benefit thereunder may be sold, assigned, discounted, or pledged (other than as collateral for a loan from the company
issuing same). Notwithstanding the foregoing, the terms of any such commercial annuity contract shall conform with the time of payment, form of payment, and consent provisions of Paragraphs 1, 2, and 3 of this Part F. 
 8. Present Value Determinations 
 The present value of a qualified
joint and survivor annuity benefit or a qualified preretirement survivor annuity benefit shall be calculated by using the Applicable Mortality Table and the Applicable Interest Rate. For purposes of the preceding sentence the term “Applicable
Mortality Table” shall mean the table prescribed by the Secretary of Treasury, pursuant to Code Section 417(e)(3)(A)(i)(I) (or corresponding provision of any future federal tax code), and the term “Applicable Interest Rate” shall
mean the annual rate of the interest on 30-year Treasury securities for the month before the date of distribution or such other time as may be prescribed by Treasury Regulations under Code Section 417(e)(3)(A)(i)(II) (or corresponding provision
of any future federal tax code). Provided, notwithstanding the foregoing, for this Plan, which was adopted and in effect before the date of the enactment of the Retirement Protection Act of 1994, the present value of any distribution made before the
earlier of (i) the later of the date an amendment to this Plan applying the rule for calculating present value first stated above is adopted or made effective, or (ii) the first day of the first Plan Year beginning after December 31,
2000, the present value of any distribution shall be calculated by using the interest rate determined under the regulations of the Pension Benefit Guaranty Corporation for determining the present value of a lump sum distribution on plan termination
that were in effect on September 1, 1993, and by using the provisions of the Plan as in effect on the day before such date of enactment but only if such provisions of the Plan met the requirements of Code Section 417(e)(3) as in effect on
the day before such date of enactment. 
 9. Unclaimed Benefits 
 In the case of a benefit payable on behalf of a Participant, if the Committee is unable to locate the Participant or beneficiary to whom such benefit is payable, upon the Committee’s determination thereof, such benefit shall be
forfeited. Notwithstanding the foregoing, if subsequent to any such forfeiture the Participant or beneficiary to whom such benefit is payable makes a valid claim for such benefit, such forfeited benefit shall be restored to the Plan. 
 10. Claims Review 
 A. In any case in which a claim for Plan benefits
of a Participant or beneficiary is denied or modified, the Committee shall furnish written notice to the claimant within ninety (90) days (or within 180 days if additional information requested by the Committee necessitates an extension of the
ninety-day period and the claimant is informed of such extension in writing within the original ninety-day period), which notice shall: 
  

	 	1.	State the specific reason or reasons for the denial or modification; 

  

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	 	2.	Provide specific reference to pertinent Plan provisions on which the denial or modification is based; 

  

	 	3.	Provide a description of any additional material or information necessary for the Participant, his/her beneficiary, or representative to perfect the claim and an explanation of why
such material or information is necessary; and 

  

	 	4.	Explain the Plan’s claim review procedure as described in Subparagraph 10(b), below. 

 B. In the event a claim for Plan benefits is denied or modified, if the Participant, his/her beneficiary, or a representative of such Participant or beneficiary desires to have such denial or modification reviewed, he
must, within sixty (60) days following receipt of the notice of such denial or modification, submit a written request for review by the Committee of its initial decision. In connection with such request, the Participant, his/her beneficiary, or
the representative of such Participant or beneficiary may review any pertinent documents upon which such denial or modification was based and may submit issues and comments in writing. Within sixty (60) days following such request for review
the Committee shall, after providing a full and fair review, render its final decision in writing to the Participant, his/her beneficiary, or the representative of such Participant or beneficiary stating specific reasons for such decision and making
specific references to pertinent Plan provisions upon which the decision is based. If special circumstances require an extension of such sixty-day period, the Committee’s decision shall be rendered as soon as possible, but not later than one
hundred twenty (120) days after receipt of the request for review. If an extension of time for review is required, written notice of the extension shall be furnished to the Participant, beneficiary, or the representative of such Participant or
beneficiary prior to the commencement of the extension period. 
 PART G. 
 Transferred NGC Accounts; In-Service Withdrawals 
 1. In-Service Withdrawals 
 A. A Participant may withdraw any or all amounts held in his/her Transferred NGC After-Tax Account. 

B. A Participant who has a financial hardship, as determined by the Committee, and who has made all available withdrawals pursuant to Subparagraph 1(a), above, and
Paragraphs 3 and 4 of this Part G, below, as applicable, and pursuant to the provisions of any other plans of the Company of which he is a Participant and who has obtained all loans available pursuant to Article XII of the Plan and pursuant to the
provisions of any other plans of the Company of which he is a Participant may withdraw from his/her Transferred NGC Rollover Contribution Account and his/her Transferred NGC Before-Tax Account amounts not to exceed the amount determined by the
Committee as being available for withdrawal pursuant to this Paragraph. Such withdrawal shall come, first, from the Participant’s Transferred NGC Rollover Contribution Account and, second, from his/her Transferred NGC Before-Tax Account. For
purposes of this Paragraph, financial hardship shall mean the immediate and heavy financial needs of the Participant. A withdrawal based upon financial hardship pursuant to this Paragraph shall not 

  

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exceed the amount required to meet the immediate financial need created by the hardship and not reasonably available from other resources of the Participant.
The amount required to meet the immediate financial need may include any amounts necessary to pay any federal, state, or local income taxes or penalties reasonably anticipated to result from the distribution. The determination of the existence of a
Participant’s financial hardship and the amount required to be distributed to meet the need created by the hardship shall be made by the Committee. The decision of the Committee shall be final and binding, provided that all Participants
similarly situated shall be treated in a uniform and nondiscriminatory manner. A withdrawal shall be deemed to be made on account of an immediate and heavy financial need of a Participant if the withdrawal is for: 
  

	 	1.	Expenses for medical care described in section 213(d) of the Code previously incurred by the Participant, the Participant’s spouse, or any dependents of the Participant (as
defined in section 152 of the Code) or necessary for those persons to obtain medical care described in section 213(d) of the Code and not reimbursed or reimbursable by insurance; 

  

	 	2.	Costs directly related to the purchase of a principal residence of the Participant (excluding mortgage payments); 

  

	 	3.	Payment of tuition and related educational fees, and room and board expenses, for the next twelve months of post-secondary education for the Participant or the Participant’s
spouse, children, or dependents (as defined in section 152 of the Code); 

  

	 	4.	Payments necessary to prevent the eviction of the Participant from his/her principal residence or foreclosure on the mortgage of the Participant’s principal residence; or

  

	 	5.	Such other financial needs that the Commissioner of Internal Revenue may deem to be immediate and heavy financial needs through the publication of revenue rulings, notices, and
other documents of general applicability. 

 The above notwithstanding, (1) withdrawals under this Paragraph from a Participant’s
Transferred NGC Before-Tax Account shall be limited to the sum of the Participant’s Transferred NGC Before-Tax Contributions to the Plan, plus income allocable thereto and credited to the Participant’s Transferred NGC Before-Tax Account as
of December 31, 1988, less any previous withdrawals of such amounts, and (2) amounts allocated to a Participant’s Transferred NGC Before-Tax Account pursuant to the provisions of Subparagraph 2(e), below, of this Part G shall not be
subject to withdrawal. A Participant who makes a withdrawal from his/her Transferred NGC Before-Tax Account under this Paragraph may not make elective contributions or employee contributions to the Plan or any other qualified or nonqualified plan of
the Company for a period of twelve (12) months following the date of such withdrawal. Further, such Participant may not make elective contributions under the Plan or any other plan maintained by the Company for such Participant’s taxable
year immediately following the taxable year of the withdrawal in excess of the applicable limit set forth in Code section 402(g) for such next taxable year less the amount of such Participant’s elective contributions for the taxable year of the
withdrawal. 
  

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 2. Restriction on In-Service Withdrawals 
 A. All withdrawals pursuant to this Part G shall be made in accordance with the provisions and within the time period prescribed by the Committee prior to the proposed date of withdrawal. 
 B. Notwithstanding the provisions of this Part G, not more than one withdrawal pursuant to Subparagraph 1(a) shall be made in any one calendar quarter, and (ii) no
withdrawal shall be made from a Transferred NGC Account to the extent such Account has been pledged to secure a loan from the Plan. 
 C. If a
Participant’s Transferred NGC Account from which a withdrawal is made is invested in more than one investment option under the Plan, the withdrawal shall be made pro rata from each investment option under the Plan in which such Transferred NGC
Account is invested. 
 D. All withdrawals under this paragraph shall be paid in cash. 
 E. Any withdrawal hereunder shall be subject to the Direct Rollover election described in Paragraph 5 of Part F of this Article XXIII. 
 F. Except as provided in Paragraph 3 of this Part G, below, this Part G shall not be applicable to a Participant following termination of employment and the amounts in such Participant’s Transferred NGC Account
shall be distributable only in accordance with the provisions of Part F. 
 3. Withdrawal Exception Following Termination 
 Withdrawal following a termination of employment may be allowed to the extent such withdrawal would be permissible under the provisions of Appendices A and B and related
provisions of the NGC Plan with respect to withdrawals from a Trident Account or Destec Account, if applicable, which provisions are incorporated herein and made a part of this paragraph and the Plan by reference for all purposes. 
 PART H. 
 Definitions

 Where the following words and phrases appear in this Article XXIII of the Plan, they shall have the respective meanings set forth below, unless
their use in a particular context indicates to the contrary. 
 1. Annuity Starting Date 
 With respect to each Participant or beneficiary, the first day of the first period for which an amount is payable to the Participant or beneficiary from the Trust of the Plan as an annuity or in any other form.

  

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 2. Eligible Surviving Spouse 
  

	 	(a)	In the case of a Participant who is living on his/her Annuity Starting Date, the spouse to whom a deceased Participant was married on his/her Annuity Starting Date and

  

	 	(b)	in the case of a Participant who dies before his/her Annuity Starting Date, the spouse to whom a deceased Participant was married on the date of his/her death.

 3. Normal Retirement Date 
 The date the
Participant attains age sixty-five (65). 
 4. Transferred NGC After-Tax Account 
 An individual account for each Participant which is credited with the balance, if any, of such Participant’s Prior Employee (Post-Tax) Contribution Account under the NGC Plan as of December 31, 1997, and
which is credited with (or debited for) such account’s allocation of net income (or net loss) and changes in value of the trust fund of said Plan and this Plan. 
 5. Transferred NGC Before-Tax Account 
 An individual account for each Participant, which 
  

	 	(a)	is credited with 

  

	 	(1)	the balance in such Participant’s Elective Deferral Contributions Account (also known as the Pre-tax Contributions Account) under the NGC Plan as of December 31, 1997, and

  

	 	(2)	the Before-Tax Contributions made by the Employer on such Participant’s behalf and the Employer Safe Harbor Contributions, if any, made on such Participant’s behalf
pursuant to Section 3.5 of said Plan to satisfy the restrictions set forth in Section 3.1(e) thereof, and 

  

	 	(3)	is credited with (or debited for) such account’s allocation of net income (or net loss) and changes in value of the Trust of said plan and this Plan. 

6. Transferred NGC Rollover Contribution Account 
 An individual
account for a Participant, which is credited with the sum of 
  

	 	(a)	the amount, if any, credited to such Participant’s Rollover Contributions Account under the NGC Plan as of December 31, 1997, and 

  

	 	(b)	the Rollover Contributions of such Participant and which is credited with (or debited for) such account’s allocation of net income (or net loss) and changes in value of the
Trust Fund. 

 7. Vested Interest 
 The
portion of the Participant’s Transferred NGC Account which, pursuant to the Plan, is nonforfeitable. 
  

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 ARTICLE XXIV. 
 MODIFICATION AND TERMINATION 
 PARAGRAPH 
 1. Amendment and Termination of Plan 
 The Company hopes and expects to continue the Plan indefinitely. However, the
right to amend, modify or terminate the Plan is necessarily reserved by the Company. The amendment or modification of the Plan may be made by the Chief Executive Officer of the Company, upon approval by the Thrift Plan Committee, executing a written
instrument containing such amendment or modification as he deems necessary or advisable (pursuant to authority which has been duly delegated to him by the Board and is hereby acknowledged and recognized); provided, that no amendment or modification
of the Plan which would increase the benefits provided to Participants or increase contributions required to be made by the Company under the Plan, or to terminate the Plan, shall be made unless such amendment or modification is authorized pursuant
to a resolution adopted by the Board of Directors. 
 2. Limit to Effect of Modification 
 A modification may affect Participants at the time thereof as well as future Participants, but no modification, termination or partial termination or discontinuance of the Plan for any reason may diminish the account
of any Participant as of the effective date of such modification or discontinuance. No modification may alter the allocation of the benefits as between Officers and Directors on the one hand and other Employees on the other hand. A modification
which affects the rights or duties of the Trustee may be made only with the consent of the Trustee. 
 3. Participant Rights in Case of Modification

 In the event that any modification of the Plan shall adversely affect the rights of any Participant as to the use of or withdrawal from his/her
account, such Participant, for a period of ninety (90) days after the effective date of such modification, shall have the option, to be exercised by written notice to the Trustee in form prescribed by the Committee (a copy of which form of
notice shall accompany the notice of modification), to have liquidated and distributed to him/her his/her entire account as of the effective date of such modification; provided, that such right of distribution shall be subject to any applicable
qualification requirements of the Code and regulations thereunder, and shall not be permitted to the extent the Committee determines that such distribution will adversely affect the qualified status of the Plan, or is otherwise not permissible or
authorized under the Code and regulations. 
 4. Nonforfeitability 
 Notwithstanding any other provisions of the Plan, in the case of any merger or consolidation with, or transfer of assets or liabilities to, any other plan after the date of the enactment of the Employee Retirement
Income Security Act of 1974, each Participant in the Plan shall (if the Plan then terminated) receive a benefit immediately after the merger, consolidation, or transfer which is equal to or greater than the benefit he/she would have been entitled to
receive immediately before the merger, consolidation, or transfer (if the Plan had then terminated). 
  

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 5. Termination Distributions 
 The Company reserves the right to terminate the trust under the Trust Agreement, but upon any termination or partial termination of the trust, each Participant will receive distribution of the entire balance of his/her account held under
the Trust, provided that if the Participant’s Account exceeds $5,000, it shall not be immediately distributed prior to his/her attaining age sixty-five (65) without the written consent of the Participant; but no consent to immediate
distribution shall be required in the event of death of the Participant, and such requirement of consent shall not give a Participant a right to any form or method of payment of his/her account other than immediate distribution of his/her entire
account balance. 
  

			
	ONEOK, Inc.
		
	By	 	 /s/ John W. Gibson

		 	John W. Gibson
		 	Chief Executive Officer

  

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