Execution Version  REGISTRATION RIGHTS AGREEMENT  BY AND BETWEEN  CENTURI HOLDINGS, INC.,  AND  SOUTHWEST GAS HOLDINGS, INC.  DATED APRIL 11, 2024    
 
 
  i  TABLE OF CONTENTS  ARTICLE I DEFINITIONS  Section 1.1 Definitions 1  ARTICLE II DEMAND AND SHELF REGISTRATION  Section 2.1 Right to Demand; Demand Notices 4  Section 2.2 Shelf Registration 5  Section 2.3 Deferral or Suspension of Registration 6  Section 2.4 Effective Registration Statement 7  Section 2.5 Selection of Underwriters; Cutback 7  Section 2.6 Lock-up 8  Section 2.7 Participation in Underwritten Offering; Information by Holder 9  Section 2.8 Registration Expenses 9  Section 2.9 Permitted Transferees 9  ARTICLE III PIGGYBACK REGISTRATION9  Section 3.1 Notices 10  Section 3.2 Underwriter’s Cutback 10  Section 3.3 Company Control 11  Section 3.4 Selection of Underwriters 11  Section 3.5 Withdrawal of Registration 11  ARTICLE IV REGISTRATION PROCEDURES  Section 4.1 Registration Procedures 11  ARTICLE V INDEMNIFICATION  Section 5.1 Indemnification by the Company 15  Section 5.2 Indemnification by Selling Investors 15  Section 5.3 Conduct of Indemnification Proceedings 15  Section 5.4 Settlement Offers 16  Section 5.5 Other Indemnification 16  Section 5.6 Contribution 16  ARTICLE VI EXCHANGE ACT COMPLIANCE; LEGEND REMOVAL  Section 6.1 Exchange Act Compliance 16  
 
 
  ii  Section 6.2 Legend Removal 17  ARTICLE VII TERMINATION  Section 7.1 Termination 17  ARTICLE VIII MISCELLANEOUS   Section 8.1 Severability 17  Section 8.2 Governing Law; Submission to Jurisdiction 17  Section 8.3 Other Registration Rights 18  Section 8.4 [Reserved] 18  Section 8.5 Successors and Assigns 18  Section 8.6 Notices 18  Section 8.7 Headings 19  Section 8.8 Additional Parties 19  Section 8.9 Entire Agreement 19  Section 8.10 Counterparts; Facsimile or .pdf Signature 19  Section 8.11 Amendment 19  Section 8.12 Extensions; Waivers 19  Section 8.13 Further Assurances 19  Section 8.14 No Third-Party Beneficiaries 19  Section 8.15 Interpretation; Construction 19    
 
 
  THIS REGISTRATION RIGHTS AGREEMENT, dated as of April 11, 2024 (this “Agreement”), is  entered into by and between Centuri Holdings, Inc., a Delaware corporation (together with any successor entity  thereto, the “Company”), and Southwest Gas Holdings, Inc. (“Southwest”).  WHEREAS, Southwest currently owns all of the issued and outstanding shares of Common Stock (as  defined below) of the Company;  WHEREAS, Southwest intends to preserve its ability to evaluate strategic options with respect to its  remaining ownership interest in the Company after the completion of the Company’s initial public offering in a manner  consistent with its rights and obligations under the Separation Agreement (as defined below), including pursuant to  Section 3.3 thereunder after the Separation Date (as defined in the Separation Agreement); and  WHEREAS, Southwest and the Company desire to make certain arrangements to provide Southwest with  registration rights with respect to the Shares of Common Stock owned by Southwest.  NOW, THEREFORE, in consideration of the promises and of the mutual consents and obligations  hereinafter set forth, the parties hereby agree as follows:  ARTICLE I  DEFINITIONS  Section 1.1 Definitions. As used herein, the following terms shall have the following respective meanings:  “Affiliate” means, with respect to any specified Person, any other Person that, directly or indirectly, through  one or more intermediaries, Controls, or is Controlled by, or is under common Control with, such Person.  Notwithstanding the foregoing, solely for purposes of this Agreement, (a) the Company and its Affiliates shall not be  considered Affiliates of any Holder and (b) no Holder or its Affiliates shall be considered an Affiliate of the Company.  “Agreement” shall have the meaning ascribed to it in the introductory paragraph.  “Automatic Shelf Registration Statement” shall mean an “automatic shelf registration statement” as defined  in Rule 405 (or successor rule) promulgated under the Securities Act.  “beneficially owned,” “beneficial ownership” and similar phrases have the same meanings as such terms  have under Rule 13d-3 (or any successor rule then in effect) under the Exchange Act, except that in calculating the  beneficial ownership of any Holder, such Holder shall be deemed to have beneficial ownership of all securities that  such Holder has the right to acquire, whether such right is currently exercisable or is exercisable upon the occurrence  of a subsequent event.  “Business Day” shall mean any day other than a Saturday, a Sunday or a day on which banks in New York,  New York are authorized or obligated by law or executive order to close.  “Commission” shall mean the Securities and Exchange Commission or any other Federal agency at the time  administering the Securities Act.  “Common Stock” shall mean, collectively, the Company’s common stock, par value $0.01 per share, any  additional security paid, issued or distributed in respect of any such Common Stock by way of a dividend, stock split  or distribution, or in connection with a combination of shares, and any security into which such Common Stock or  additional securities shall have been converted or exchanged in connection with a recapitalization, reorganization,  reclassification, merger, consolidation, exchange, distribution or otherwise.  “Company” shall have the meaning ascribed to it in the introductory paragraph.  “Control,” and its correlative meanings, “Controlling,” and “Controlled,” shall mean the possession, direct  or indirect (including through one or more intermediaries), of the power to direct or cause the direction of the  management of a Person, whether through the ownership of voting securities, by contract or otherwise.  
 
 
  2  “Demand Notice” shall have the meaning ascribed to it in Section 2.1(b).  “Demand Registration” shall mean a registration of Shares pursuant to Section 2.1.  “Demand Right” shall have the meaning ascribed to it in Section 2.1(a).  “Determination Date” shall have the meaning ascribed to it in Section 2.2(d).  “Disadvantageous Condition” shall have the meaning ascribed to it in Section 2.3(a).  “Equity Equivalents” means any securities, rights, options or warrants (or similar securities) to purchase  Common Stock, and or obligations of any type whatsoever that are, or may become, convertible into or exercisable  for or exchangeable into Common Stock.  “Exchange Act” shall mean the Securities Exchange Act of 1934, as amended, and the rules and regulations  promulgated thereunder.  “FINRA” shall mean the Financial Industry Regulatory Authority or any successor regulatory authority.  “Fully Diluted Outstanding Shares” means, at the relevant time, the number of Shares of Common Stock  outstanding, assuming all Equity Equivalents then outstanding have been converted, exercised, or exchanged, as the  case may be, into Shares of Common Stock at (if applicable) the then applicable conversion or exercise price.  “Holders” shall mean (i) Southwest and (ii) any Permitted Transferees.  “Information” shall have the meaning ascribed to it in Section 4.1(i).  “Initial Notice” shall have the meaning ascribed to it in Section 3.1.  “Inspectors” shall have the meaning ascribed to it in Section 4.1(i).  “Lock-Up Period” shall have the meaning ascribed to it in Section 2.6(a).  “Marketed Underwritten Shelf Take-Down” shall have the meaning ascribed to it in Section 2.2(c)(i).  “Permitted Transferee” shall have the meaning ascribed to it in Section 2.9.   “Person” shall be construed broadly and shall include, without limitation, an individual, a partnership, a  limited liability company, a corporation, an association, a joint stock company, a trust, a joint venture, an  unincorporated organization and a governmental entity or any department, agency or political subdivision thereof.  “Piggyback Notice” shall have the meaning ascribed to it in Section 3.1(a).  “Piggyback Registration” shall mean any registration pursuant to Section 3.1(a).  “Prospectus” shall mean the prospectus included in any Registration Statement, as amended or supplemented  by any prospectus supplement with respect to the terms of the offering of any portion of the securities covered by such  Registration Statement and, in each case, by all other amendments and supplements to such prospectus, including  post-effective amendments and, in each case, all material incorporated by reference in such prospectus.  “Records” shall have the meaning ascribed to it in Section 4.1(i).  “Registrable Securities” shall mean, with respect to any Holder, at any time, the Shares held or beneficially  owned by such Holder at such time or which such Holder has the right to acquire pursuant to the exercise of any  option, warrant or right or the conversion or exchange of any convertible or exchangeable security held or beneficially  owned by such Holder at such time, regardless of whether then exercisable, convertible or exchangeable (including,  for the avoidance of doubt, any Company securities issued or issuable with respect to, or in exchange for, or upon  conversion or in replacement of, any Shares as a result of any stock split, stock dividend, recapitalization,  reclassification, merger, reorganization, exchange, conversion or similar event); provided, however, that as to any  
 
 
  3  Registrable Securities, such securities shall cease to be Registrable Securities (i) upon the sale thereof pursuant to an  effective Registration Statement, (ii) upon the sale thereof pursuant to Rule 144 or Rule 145, (iii) when the Holder of  such securities holds or beneficially owns less than one percent (1%) of the then issued and outstanding shares of  Common Stock (determined as the aggregate number of Registrable Securities held or beneficially owned by such  Holder with all of its Affiliates, and the Company shall promptly, upon the request of any Holder, furnish to such  Holder evidence of the number of shares of Common Stock then outstanding) and such securities are eligible for sale  pursuant to Rule 144 without compliance with the manner of sale and volume limitations under such rule and are not  otherwise subject to any transfer restriction, (iv) when such securities cease to be outstanding or (v) if such securities  shall have been otherwise transferred and new certificates or book-entries for them not bearing a legend restricting  transfer shall have been delivered by the Company and such securities may be publicly resold without registration  under the Securities Act and without being subject to any volume limitations or manner of sale restrictions pursuant  to Rule 144.  “Registration Statement” shall mean any Registration Statement of the Company which covers the  Registrable Securities, including any preliminary Prospectus and the Prospectus, amendments and supplements to  such Registration Statement, including post-effective amendments, all exhibits thereto and all material incorporated  by reference in such Registration Statement.  “Registration Suspension” shall have the meaning ascribed to it in Section 2.3(a).  “Requesting Holder” shall mean the Holder exercising a Demand Right.  “Restricted Shelf Take-Down” shall have the meaning ascribed to it in Section 2.2(c)(iii).  “Restricted Shelf Take-Down Notice” shall have the meaning ascribed to it in Section 2.2(c)(iii).  “Rule 144” shall mean Rule 144 under the Securities Act as such rule may be amended from time to time (or  any successor rule).  “Rule 145” shall mean Rule 145 under the Securities Act as such rule may be amended from time to time (or  any successor rule).  “Securities Act” shall mean the Securities Act of 1933, as amended, and the rules and regulations  promulgated thereunder.  “Selling Investors” shall mean the Holders selling Registrable Securities pursuant to a Registration Statement  under this Agreement.  “Selling Investors’ Counsel” shall have the meaning set forth in Section 4.1(b).  “Separation Agreement” shall mean that certain Separation Agreement, by and between Southwest and the  Company, dated as of April 11, 2024.  “Shares” shall mean shares of Common Stock.  “Shelf Holder” shall have the meaning ascribed to it in Section 2.2(b).  “Shelf Registration” shall have the meaning ascribed to it in Section 2.2(a).  “Shelf Registration Statement” shall have the meaning ascribed to it in Section 2.2(a).  “Shelf Take-Down” shall have the meaning ascribed to it in Section 2.2(b).  “Short-Form Registration Statement” shall mean a registration statement on Form S-3 or any similar short- form registration statement, as it may be amended from time to time, or any similar successor form.  “Southwest” shall have the meaning ascribed to it in the introductory paragraph.  
 
 
  4  “Transfer” shall mean any direct or indirect sale, assignment, transfer, conveyance, gift, bequest by will or  under intestacy laws, pledge, hypothecation or other encumbrance, or any other disposition, of the stated security (or  any interest therein or right thereto, including the issuance of any total return swap or other derivative whose economic  value is primarily based upon the value of the stated security) or of all or part of the voting power (other than the  granting of a revocable proxy) associated with the stated security (or any interest therein) whatsoever, or any other  transfer of beneficial ownership of the stated security, with or without consideration and whether voluntarily or  involuntarily (including by operation of law).  “Underwritten Offering” shall mean a sale, on the Company’s or any Holder’s behalf, of Shares by the  Company or a Holder to an underwriter for reoffering to the public.  “Underwritten Shelf Take-Down” shall have the meaning ascribed to it in Section 2.2(c)(i).  “Underwritten Shelf Take-Down Notice” shall have the meaning ascribed to it in Section 2.2(c)(i).  “Well-Known Seasoned Issuer” shall mean a “well-known seasoned issuer” as defined in Rule 405 (or  successor rule) promulgated under the Securities Act.  ARTICLE II  DEMAND AND SHELF REGISTRATION  Section 2.1 Right to Demand; Demand Notices.  (a) Demand for Registration. Subject to the provisions of this Article II, at any time and from time  to time, each Holder shall have the right to request in writing that the Company register the offer and sale under the  Securities Act of all or part of the Registrable Securities beneficially owned by such Holder (a “Demand Right”).  Notwithstanding the foregoing, if the Company has previously effected a Demand Registration pursuant to  this Section 2.1, the Company shall not be required to effect an additional Demand Registration pursuant to  this Section 2.1 until a period of 60 days shall have elapsed from the date on which such previous Registration  Statement became effective. Furthermore, the Company shall not be obligated to effect more than three (3) Demand  Registrations in any twelve (12)-month period.  (b) Demand Notices. All requests made pursuant to this Section 2.1 shall be made by providing  written notice to the Company (each such written notice, a “Demand Notice”), which notice shall (i) specify the  aggregate number and class or classes of Registrable Securities proposed to be registered by the Holder providing  such Demand Notice and (ii) state the intended methods of disposition in the offering (including whether or not such  offering shall be an Underwritten Offering).  (c) Demand Filing. Subject to Section 2.3, the Company shall use reasonable best efforts to file a  Registration Statement in respect of a Demand Notice as soon as practicable (and in any event within 30 days (in the  case of a Registration Statement on Form S-3 or Form S-4) or 75 days (in the case of all other Registration Statements)  after receiving a Demand Notice) and shall use reasonable best efforts to cause the same to be declared effective by  the Commission or otherwise become effective as promptly as practicable after such filing.  (d) Demand Registration Form. Registrations under this Section 2.1 shall be on such appropriate  registration form of the Commission that the Company is eligible to use (i) as reasonably requested by the Requesting  Holder (which form may include a confidential submission if permitted under applicable rules of the Commission)  and (ii) as shall permit the disposition of the Registrable Securities in accordance with the intended method or methods  of disposition specified in the Demand Notice. If, in connection with any registration under this Section 2.1 that is  requested by the Requesting Holder to be on a Short-Form Registration Statement, the managing underwriter, if any,  shall advise the Company that in its opinion, or if the Company independently determines in good faith, the use of  another permitted form is of material importance to the success of the offering, then such registration shall be permitted  to be on such other permitted form.  (e) Demand Withdrawal. A Requesting Holder may withdraw all or any portion of its Registrable  Securities from a Demand Registration by providing written notice to the Company at least five (5) Business Days  
 
 
  5  prior to the earliest of (i) effectiveness of the applicable Registration Statement, (ii) the filing of any Registration  Statement relating to such Demand Registration that includes a pricing range or (iii) the commencement of a roadshow  relating to the Registration Statement for such Demand Registration.  Section 2.2 Shelf Registration.  (a) Filing. Notwithstanding anything contained in this Agreement to the contrary, (i) from and after  such time as the Company shall have qualified for the use of a Short-Form Registration Statement, upon the written  request by Southwest, the Company shall use its reasonable best efforts to file as soon as reasonably practicable and  in any event within 30 days with the Commission a Short-Form Registration Statement (a “Shelf Registration  Statement”) to register the offer and sale of all or a portion of the Registrable Securities then outstanding on a delayed  or continuous basis in accordance with Rule 415 under the Securities Act (a “Shelf Registration”) and (ii) the  Company shall use its reasonable best efforts to cause the Shelf Registration Statement to be declared effective by the  Commission or otherwise become effective as promptly as practicable after such filing. In no event shall the Company  be required to file, and maintain effectiveness of, more than one Shelf Registration Statement at any one time pursuant  to this Section 2.2. For the avoidance of doubt, no request for the filing of a Shelf Registration Statement pursuant to  this Section 2.2(a) shall count as a Demand Registration for purposes of Section 2.1(a).  (b) Shelf Take-Downs. Any Holder whose Registrable Securities are included in an effective Shelf  Registration Statement (a “Shelf Holder”) may initiate an offering or sale of all or part of such Registrable Securities  (a “Shelf Take-Down”), in which case the provisions of this Section 2.2 shall apply.  (c) Underwritten Shelf Take-Downs.  (i) Subject to Section 2.2(b), if a Holder that is a Shelf Holder so elects in a written request  delivered to the Company (an “Underwritten Shelf Take-Down Notice”), a Shelf Take-Down may be in the form of  an Underwritten Offering (an “Underwritten Shelf Take-Down”) and, if necessary, the Company shall use its  reasonable best efforts to file and effect an amendment or supplement to its Shelf Registration Statement for such  purpose as soon as practicable. Such initiating Shelf Holder shall indicate in such Underwritten Shelf Take-Down  Notice the number of Registrable Securities of such Shelf Holder to be included in such Underwritten Shelf Take- Down and whether it intends for such Underwritten Shelf Take-Down to involve a customary “road show” (including  an “electronic road show”) or other marketing effort by the underwriters (a “Marketed Underwritten Shelf Take- Down”).  (ii) Promptly upon delivery of an Underwritten Shelf Take-Down Notice with respect to a  Marketed Underwritten Shelf-Take Down (but in no event more than ten (10) days prior to the expected date of such  Marketed Underwritten Shelf Take-Down), the Company shall promptly deliver a written notice of such Marketed  Underwritten Shelf Take-Down to all Shelf Holders with Registrable Securities under such Shelf Registration  Statement and, in each case, subject to Section 2.5(b) and Section 2.7, the Company shall include in such Marketed  Underwritten Shelf Take-Down all such Registrable Securities of such Shelf Holders that are registered on such Shelf  Registration Statement for which the Company has received written requests, which requests must specify the  aggregate amount of such Registrable Securities of such Holder to be offered and sold pursuant to such Marketed  Underwritten Shelf Take-Down, for inclusion therein at least three (3) Business Days prior to the expected date of  such Marketed Underwritten Shelf Take-Down.  (iii) If a Shelf Holder desires to effect an Underwritten Shelf Take-Down that is not a  Marketed Underwritten Shelf Take-Down (a “Restricted Shelf Take-Down”), the Shelf Holder initiating such  Restricted Shelf Take-Down shall provide written notice (a “Restricted Shelf Take-Down Notice”) of such Restricted  Shelf Take-Down to the other Shelf Holders as far in advance of the completion of such Restricted Shelf Take-Down  as shall be reasonably practicable in light of the circumstances applicable to such Restricted Shelf Take-Down, which  Restricted Shelf Take-Down Notice shall set forth (A) the total number of Registrable Securities expected to be offered  and sold in such Restricted Shelf Take-Down, (B) the expected plan of distribution of such Restricted Shelf Take- Down, (C) an invitation to the other Shelf Holders to elect to include in the Restricted Shelf Take-Down Registrable  Securities held by such other Shelf Holders (but subject to Section 2.5(b) and Section 2.7) and (D) the action or actions  required (including the timing thereof) in connection with such Restricted Shelf Take-Down with respect to the other  Shelf Holders if any such Shelf Holder elects to exercise such right.  
 
 
  6  (iv) Upon delivery of a Restricted Shelf Take-Down Notice, the other Shelf Holders may  elect to sell Registrable Securities in such Restricted Shelf Take-Down, at the same price per Registrable Security and  pursuant to the same terms and conditions with respect to payment for the Registrable Securities as agreed to by the  initiating Shelf Holder, by sending an irrevocable written notice to the initiating Shelf Holder, indicating its election  to participate in the Restricted Shelf Take-Down and the total number of its Registrable Securities to include in the  Restricted Shelf Take-Down (but, in all cases, subject to Section 2.5(b) and Section 2.7).  (v) Notwithstanding the delivery of any Underwritten Shelf Take-Down Notice, all  determinations as to whether to complete any Underwritten Shelf Take-Down and as to the timing, manner, price and  other terms of any Underwritten Shelf Take-Down shall be at the discretion of the Shelf Holder initiating the  Underwritten Shelf Take-Down.  (d) Filing for Well-Known Seasoned Issuer. If the Company qualifies as a Well-Known Seasoned  Issuer, then, upon the Company becoming a Well-Known Seasoned Issuer, (x) the Company shall give written notice  to all of the Holders as promptly as practicable but in no event later than ten (10) Business Days thereafter and such  notice shall describe, in reasonable detail, the basis on which the Company has become a Well-Known Seasoned  Issuer, and (y) if the Company then qualifies for the use of a Short-Form Registration Statement, the Company shall,  upon written request by Southwest, as promptly as practicable, but in no event later than 20 Business Days after  receiving such request, use its reasonable best efforts to register, under an Automatic Shelf Registration Statement,  the offer and sale of all of the Registrable Securities in accordance with the terms of this Agreement. The Company  agrees that if any Holder beneficially owns any Registrable Securities three years after the filing of the most recent  Automatic Shelf Registration Statement in compliance with this Section 2.2(d), the Company shall (x) give written  notice of the third anniversary of the filing of the most recent Automatic Shelf Registration Statement to all such  Holders no later than ten (10) Business Days prior to such third anniversary and (y) upon written request by Southwest,  as promptly as practicable, but in no event later than 20 Business Days after receiving such request, use its reasonable  best efforts to file and cause to remain effective a new Automatic Shelf Registration Statement that registers the offer  and sale of any Registrable Securities that remain outstanding at such time. The Company shall give written notice of  filing such Registration Statement to all of the Holders as promptly as practicable thereafter. At any time after the  filing of an Automatic Shelf Registration Statement by the Company, if the Company is required to re-evaluate its  status as a Well-Known Seasoned Issuer for the continued use of such Automatic Shelf Registration Statement and  the Company is no longer a Well-Known Seasoned Issuer (the “Determination Date”), within ten (10) Business Days  after such Determination Date, the Company shall (A) give written notice thereof to all of the Holders and (B) to the  extent the Company continues to qualify for the use of a Short-Form Registration Statement and there is not a  then-effective Shelf Registration Statement covering all of the Registrable Securities, the Company shall file a Short- Form Registration Statement (or a post-effective amendment converting the Automatic Shelf Registration Statement  to a Short-Form Registration Statement) covering all of the Registrable Securities, and the Company shall use its  reasonable best efforts to have such Short-Form Registration Statement declared effective as promptly as practicable  after the date the Automatic Shelf Registration Statement is no longer useable by the Holders to sell their Registrable  Securities.  (e) Continued Effectiveness. The Company shall use its reasonable best efforts to keep the Shelf  Registration Statement filed pursuant to Section 2.2(a) or Section 2.2(d), as applicable, continuously effective under  the Securities Act in order to permit the Prospectus forming a part thereof to be usable by a Shelf Holder until the  earlier of (i) the date as of which all Registrable Securities registered by such Shelf Registration Statement no longer  constitute Registrable Securities and (ii) such shorter period as Shelf Holders holding a majority of the Registrable  Securities may reasonably determine.  Section 2.3 Deferral or Suspension of Registration.   (a) If the Board of Directors (the “Board”) of the Company reasonably determines in good faith that  the filing (but not the preparation), initial effectiveness or continued use of a Registration Statement would (i) require  the disclosure of material nonpublic information, the disclosure of which would be reasonably likely to have a material  adverse effect on the Company, (ii) materially impede, delay or interfere with any material acquisition, divestiture,  joint venture, merger, consolidation, other business combination, corporate reorganization, tender offer or other  material transaction of the Company or (iii) render the Company unable to comply with SEC requirements for  effectiveness of such Registration Statement (each of clauses (i) through (iii), a “Disadvantageous Condition”), the  Company may, upon giving prompt written notice of such action to the Holders, postpone the filing or effectiveness  
 
 
  7  (but not the preparation) or continued use of such Registration Statement (a “Registration Suspension”) until the earlier  of (A) seven (7) days after the date on which the Disadvantageous Condition no longer exists or (B) forty-five (45)  days after the date on which the Board makes such determination that a Disadvantageous Condition exists; provided,  however, that the Company may not exercise a Registration Suspension pursuant to this Section 2.3(a) with respect to  a Registration relating to an Distribution; provided further, that the Company may exercise a Registration Suspension  no more than once during any twelve (12)-month period following the Separation Date.  (c) Notwithstanding the foregoing, no deferral or suspension pursuant to this Section 2.3 delay shall  exceed such number of days the Company determines in good faith to be reasonably necessary. In the event of any  deferral or suspension pursuant to this Section 2.3, the Company shall (i) promptly notify the Requesting Holder or  Shelf Holders, as applicable, of the deferral or suspension but not the reason therefor; (ii) use its reasonable best efforts  to keep the Requesting Holder or Shelf Holders, as applicable, apprised of the estimated length of the anticipated  delay; (iii) use its reasonable best efforts to limit the length of any delay; and (iv) notify the Requesting Holder or  Shelf Holders, as applicable, promptly upon termination of the deferral or suspension. The Company shall not register  the offer and sale of any securities for its own account or that of any other Holder(s) during any such deferral or  suspension period; provided, that, for the avoidance of doubt, the previous clause shall not apply to a registration  on Form S-8, or any successor of such form, or a registration relating solely to the offer and sale to the Company’s  directors or employees pursuant to any employee stock plan or other employee benefit plan or arrangement. Notices  given by the Company pursuant to this Section 2.3 shall not contain any material non-public information. After the  expiration of the deferral or suspension period and without any further request from the Requesting Holder or Shelf  Holders, as applicable, to the extent such Requesting Holder has not withdrawn the Demand Notice, if applicable, the  Company shall as promptly as reasonably practicable prepare and file a Registration Statement or post-effective  amendment or supplement to the applicable Registration Statement or document, or file any other required document,  as applicable, so that, as thereafter delivered to purchasers of the Registrable Securities included therein, the  Prospectus will not include a material misstatement or omission and will be effective and useable for the sale of  Registrable Securities.  Section 2.4 Effective Registration Statement. A registration requested pursuant to this Article II shall not be  deemed to have been effected:  (a) unless a Registration Statement with respect thereto has been declared effective by the  Commission (or otherwise becomes effective) and remains effective in compliance with the provisions of the  Securities Act and the laws of any U.S. state or other jurisdiction applicable to the disposition of Registrable Securities  covered by such Registration Statement for not less than 180 days (or such shorter period as will terminate when all  of such Registrable Securities shall have been disposed of in accordance with such Registration Statement) or, if such  Registration Statement relates to an Underwritten Offering, such longer period as, in the opinion of counsel for the  Company, a Prospectus is required by law to be delivered in connection with sales of Registrable Securities by an  underwriter or dealer;  (b) if, after it becomes effective, such registration is interfered with by any stop order, injunction or  other order or requirement of the Commission or other governmental authority or court for any reason other than a  violation of applicable law solely by any Selling Investor and has not thereafter become effective; or  (c) if, in the case of an Underwritten Offering, the conditions to closing specified in an underwriting  agreement applicable to the Company are not satisfied or waived other than by reason of any breach or failure by any  Selling Investor.  Section 2.5 Selection of Underwriters; Cutback.  (a) Selection of Underwriters. If a Requesting Holder intends to offer and sell the Registrable  Securities covered by its request under this Article II by means of an Underwritten Offering, such Requesting Holder  shall, in reasonable consultation with other participating Holders (if any), select the managing underwriter or  underwriters to administer such offering, which managing underwriter or underwriters shall be firms of nationally  recognized standing. If a Shelf Holder intends to offer and sell the Registrable Securities covered by its request under  this Article II by means of an Underwritten Shelf Take-Down, the participating Shelf Holders shall mutually select  the managing underwriter or underwriters to administer such offering, which managing underwriter or underwriters  shall be firms of nationally recognized standing.  
 
 
  8  (b) Underwriter’s Cutback. Notwithstanding any other provision of this Article II or Section 3.1, if  the managing underwriter or underwriters of an Underwritten Offering in connection with a Demand Registration or  a Shelf Registration advise the Company in writing in their good faith opinion that the inclusion of all such Registrable  Securities proposed to be included in the Registration Statement or such Underwritten Offering would be reasonably  likely to interfere with the successful marketing, including, but not limited to, the pricing, timing or distribution, of  the Registrable Securities to be offered thereby or in such Underwritten Offering, and no Holder has delivered a  Piggyback Notice with respect to such Underwritten Offering, then the number of Registrable Securities proposed to  be included in such Registration Statement or Underwritten Offering shall be allocated among the Company, the  Selling Investors and all other Persons selling Registrable Securities in such Underwritten Offering in the following  order:  (i) first, the Registrable Securities of the class or classes proposed to be registered held by  the Holder that initiated such Demand Registration, Shelf Registration or Underwritten Offering;   (ii) second, all other securities of the same class or classes (or convertible at the Holder’s  option into such class or classes) requested to be included in such Demand Registration, Shelf Registration or  Underwritten Offering other than Registrable Securities to be offered and sold by the Company; and  (iii) third, the Registrable Securities of the same class or classes to be offered and sold by  the Company.  No Registrable Securities excluded from the underwriting by reason of the managing underwriter’s marketing  limitation shall be included in such registration or offering. If the managing underwriter has not limited the number  of Registrable Securities to be underwritten, the Company may include Registrable Securities for its own account (or  for the account of any other Persons) in such registration if the managing underwriter so agrees and if the number of  Registrable Securities would not thereby be limited.  Section 2.6 Lock-up.  (a) If requested by the managing underwriters in connection with any Underwritten Offering, each  Holder (i) who beneficially owns 1% or more of the outstanding Shares or (ii) who is a natural person and serving as  a director or executive officer of the Company shall agree to be bound by customary lock-up agreements providing  that such Holder shall not, directly or indirectly, effect any Transfer (including sales pursuant to Rule 144) of any such  Shares without prior written consent from the underwriters managing such Underwritten Offering during a period  beginning on the date of launch of such Underwritten Offering and ending up to 90 days from and including the date  of pricing or such shorter period as reasonably requested by the underwriters managing such Underwritten Offering  (the “Lock-Up Period”); provided that (A) the foregoing shall not apply to any Shares that are offered for sale as part  of such Underwritten Offering and (B) such Lock-Up Period shall be no longer than and on substantially the same  terms as the lock-up period applicable to the Company and the executive officers and directors of the Company. Each  such Holder agrees to execute a customary lock-up agreement in favor of the underwriters to such effect.  (b) Nothing in Section 2.6(a) shall prevent: (i) any Holder that is a partnership, limited liability  company or corporation from (A) making a distribution of Shares to the partners, members or stockholders thereof or  (B) Transferring Shares to an Affiliate of such Holder; (ii) any Holder who is an individual from Transferring Shares  to (A) an individual by will or the laws of descent or distribution or by gift without consideration of any kind or (B) a  trust or estate planning-related entity for the sole benefit of such Holder or a lineal descendant or antecedent or spouse;  (iii) any Holder from (A) pledging, hypothecating or otherwise granting a security interest in Shares or securities  convertible into or exchangeable for Shares to one or more lending institutions as collateral or security for any loan,  advance or extension of credit and any transfer upon foreclosure upon such Shares or such securities or  (B) Transferring Shares pursuant to a final non-appealable order of a court or regulatory agency or (iv) any Holder  from Transferring Shares in a manner that was permitted under, but subject to the conditions described in, the lockups  entered into in connection with the Company’s initial public offering; provided that, in the case of clauses (i), (ii), (iii)  and (iv), such Transfer is otherwise in compliance with applicable securities laws and; provided, further, that, in the  case of clause (i), clause (ii), subclause (A) of clause (iii) and, if applicable, clause (iv), each such Permitted  Transferee agrees in writing to become subject to the terms of this Agreement and agrees to be bound by the applicable  underwriter lock-up.  
 
 
  9  Section 2.7 Participation in Underwritten Offering; Information by Holder. No Holder may participate in an  Underwritten Offering hereunder unless such Holder (a) agrees to sell such Holder’s Shares on the basis provided in  any underwriting arrangements, and in accordance with the terms and provisions of this Agreement, including  any lock-up arrangements, and (b) completes and executes all questionnaires, indemnities, underwriting agreements  and other documents required under the terms of such underwriting arrangements. In addition, the Holders shall  furnish to the Company such information regarding such Holder or Holders and the distribution proposed by such  Holders, as applicable, as the Company may reasonably request in writing and as shall be required in connection with  any registration, qualification or compliance referred to in this Article II. Nothing in this Section 2.7 shall be construed  to create any additional rights regarding the registration of the offer and sale of Shares in any Person otherwise than  as set forth herein.  Section 2.8 Registration Expenses. All expenses incident to the Company’s performance of or compliance  with this Agreement, including without limitation (i) all registration and filing fees, and any other fees and expenses  associated with filings required to be made with any stock exchange, the Commission and FINRA (including, if  applicable, the fees and expenses of any “qualified independent underwriter” and its counsel as may be required by  the rules and regulations of FINRA), (ii) all fees and expenses of compliance with state securities or blue sky laws  (including fees and disbursements of counsel for the underwriters or Selling Investors in connection with blue sky  qualifications of the Shares and determination of their eligibility for investment under the laws of such jurisdictions  as the managing underwriters or the Selling Investors may designate), (iii) all printing and related messenger and  delivery expenses (including expenses of printing certificates for the Shares in a form eligible for deposit with The  Depository Trust Company and of printing prospectuses), (iv) all fees and disbursements of counsel for the Company  and of all independent certified public accountants of the Company and its subsidiaries (including the expenses of any  special audit and “cold comfort” letters required by or incident to such performance and, for the avoidance of doubt,  any comfort letters relating to any financial statements as may be required by Rule 3-05 of Regulation S-X), (v) all  fees and expenses incurred in connection with the listing of the Shares on any securities exchange and all transfer  agent fees, (vi) all fees and reasonable and documented out-of-pocket expenses and disbursements of the Selling  Investors’ Counsel, (vii) all fees and reasonable and documented out-of-pocket disbursements of underwriters  customarily paid by the issuer or sellers of securities, including liability insurance if the Company so desires or if the  underwriters so require and expenses of any special experts retained in connection with the requested registration  (excluding fees and disbursements of counsel to underwriters (other than such fees and disbursements incurred in  connection with any FINRA filing or registration or qualification of Shares under the securities or blue sky laws of  any state)), (viii) Securities Act liability insurance or similar insurance if the Company or the underwriters so require  in accordance with then-customary underwriting practice, (ix) fees and expenses of other Persons retained by the  Company, and (x) any other expenses customarily paid by the issuers of securities, will be borne by the Company,  regardless of whether the Registration Statement becomes effective (or such offering is completed) and whether or  not all or any portion of the Registrable Securities originally requested to be included in such registration are ultimately  included in such registration; provided, however, that (x) any underwriting discounts, commissions or fees in  connection with the sale of the Registrable Securities will be borne by the Holders pro rata on the basis of the number  of Shares so registered and sold, (y) transfer taxes with respect to the sale of Registrable Securities will be borne by  the Holder of such Registrable Securities and (z) the fees and expenses of any other counsel, accountants or other  persons retained or employed by any Holder will be borne by such Holder.  Section 2.9 Permitted Transferees. As used in this Agreement, “Permitted Transferee” shall mean any  transferee, whether direct or indirect, of Registrable Securities that (a) (i) as of the time of transfer of the Registrable  Securities to such transferee is, and as of immediately prior to the sale of Registrable Securities pursuant to the Demand  Registration or Piggyback Registration, as the case may be, will be, a member of the Southwest Group (as defined in  the Separation Agreement) or (ii) is a third-party lender participating in an equity-for-debt exchange (i.e., any transfer  of the Common Stock by a member of the Southwest Group to one or more third-party lenders in repayment of  indebtedness of any member of the Southwest Group owed to such lenders or their affiliates) and (b) is designated by  Southwest (or a subsequent Holder) in a written notice to the Company. Any Permitted Transferee of the Registrable  Securities shall be subject to and bound by and benefit from all of the terms and conditions herein applicable to  Holders. For the avoidance of doubt, any Permitted Transferee of Registrable Securities shall be subject to and bound  by and benefit from all of the terms and conditions applicable to Holders generally and not those applicable to  Southwest (or any member of the Southwest Group) specifically. The notice required by this Section 2.9 shall be  signed by both the transferring Holder and the Permitted Transferees so designated and shall include an undertaking  by the Permitted Transferees to comply with the terms and conditions of this Agreement applicable to Holders.  
 
 
  10  ARTICLE III  PIGGYBACK REGISTRATION  Section 3.1 Notices.  (a) If the Company at any time proposes for any reason to register the offer and sale of a class or  classes of Shares under the Securities Act (other than a registration on Form S-4 or Form S-8, or any successor of  either such form, or a registration relating solely to the offer and sale to the Company’s directors or employees pursuant  to any employee stock plan or other employee benefit plan or arrangement), including the filing of a prospectus  supplement to an already effective Registration Statement, whether or not Shares are to be sold by the Company or  otherwise, and whether or not in connection with any Demand Registration pursuant to Section 2.1, any Shelf  Registration pursuant to Section 2.2 or any other agreement (such registration, a “Piggyback Registration”), the  Company shall give to each Holder holding Shares of the same class or classes proposed to be registered (or  convertible at the Holder’s option into such class or classes) written notice of its intention to so register the offer and  sale of the Shares at least ten (10) days (or such shorter period as reasonably practical) prior to the expected date of  filing of such Registration Statement or amendment thereto in which the Company first intends to identify the selling  stockholders and the number of Registrable Securities to be sold (each such notice, an “Initial Notice”). The Company  shall, subject to the provisions of Section 3.2 and Section 3.3 below, use its reasonable best efforts to include in such  Piggyback Registration on the same terms and conditions as the securities otherwise being sold, all Registrable  Securities of the same class or classes as the Shares proposed to be registered (or convertible at the Holder’s option  into such class or classes) with respect to which the Company has received written requests from Holders for inclusion  therein within the time period specified by the Company in the applicable Initial Notice, which time period shall be  not less than five (5) Business Days after sending the applicable Initial Notice (each such written request, a “Piggyback  Notice”), which Piggyback Notice shall specify the number of Shares proposed to be included in the Piggyback  Registration.  (b) If a Holder does not deliver a Piggyback Notice within the period specified in Section 3.1(a),  such Holder shall be deemed to have irrevocably waived any and all rights under this Article III with respect to such  registration (but not with respect to future registrations in accordance with this Article III).  (c) No registration effected under this Section 3.1 shall relieve the Company of its obligation to  effect any registration upon request under Section 2.1 or Section 2.2, and no registration effected pursuant to  this Section 3.1 shall be deemed to have been effected pursuant to Section 2.1 or Section 2.2. The Initial Notice, the  Piggyback Notice and the contents thereof shall be kept confidential until the public filing of the Registration  Statement.  Section 3.2 Underwriter’s Cutback. If the managing underwriter or underwriters of an Underwritten Offering  (including an offering pursuant to Section 2.1 or Section 2.2) that includes a Piggyback Registration advises the  Company in writing that it is the managing underwriter’s good faith opinion that the inclusion of all such Registrable  Securities proposed to be included in the Registration Statement for such Underwritten Offering would be reasonably  likely to interfere with the successful marketing, including, but not limited to, the pricing, timing or distribution, of  the Registrable Securities to be offered thereby, then the number of Shares proposed to be included in such  Underwritten Offering shall be allocated among the Company, the Selling Investors and all other Persons selling  Shares in such Underwritten Offering in the following order:  (a) If the Piggyback Registration referred to in Section 3.1 is initiated as an underwritten primary  registration on behalf of the Company, then, with respect to each class proposed to be registered:  (i) first, the Shares that the Company proposes to offer and sell;  (ii) second, all Registrable Securities of the same class or classes (or convertible at the  Holder’s option into such class or classes) held by Holders requested to be included in such Piggyback Registration  (for each such Holder, the number of Registrable Securities to be included in any such registration shall be the lesser  of (x) the pro rata number of Registrable Securities among the respective Holders of such Registrable Securities in  proportion, as nearly as practicable, to the amounts of Registrable Securities held by each such Holder at the time of  
 
 
  11  such Piggyback Registration and (y) the number of Registrable Securities requested to be included in such registration  by each such Holder); and  (iii) third, all other securities of the same class or classes (or convertible at the Holder’s  option into such class or classes) requested to be included in such Piggyback Registration.  (b) if the Piggyback Registration referred to in Section 3.1 is an underwritten secondary registration  on behalf of any Requesting Holder, then, with respect to each class proposed to be registered:  (i) first, the Registrable Securities of the class or classes proposed to be registered held by  such Requesting Holder and the Registrable Securities of the same class or classes (or convertible at the Holder’s  option into such class or classes) held by other Holders requested to be included in such Piggyback Registration (for  each such Holder, the number of Registrable Securities to be included in any such registration shall be the lesser of  (x) the pro rata number of Registrable Securities among the respective Holders of such Registrable Securities in  proportion, as nearly as practicable, to the amounts of Registrable Securities held by each such Holder at the time of  such Piggyback Registration and (y) the number of Registrable Securities requested to be included in such registration  by each such Holder);  (ii) second, all other securities of the same class or classes (or convertible at the Holder’s  option into such class or classes) requested to be included in such Piggyback Registration other than Shares to be  offered and sold by the Company; and  (iii) third, the Shares of the same class or classes to be offered and sold by the Company.  Section 3.3 Company Control. Except for a Registration Statement being filed in connection with the exercise  of a Demand Right or a Shelf Registration, the Company may decline to file a Registration Statement after an Initial  Notice has been given or after receipt by the Company of a Piggyback Notice, and the Company may withdraw a  Registration Statement after filing and after such Initial Notice or Piggyback Notice, but prior to the effectiveness of  the Registration Statement, provided that (i) the Company shall promptly notify the Selling Investors in writing of any  such action and (ii) nothing in this Section 3.3 shall prejudice the right of any Holder to immediately request that such  registration be effected as a registration under Section 2.1 or Section 2.2 to the extent permitted thereunder.  Section 3.4 Selection of Underwriters. If the Company intends to offer and sell Shares by means of an  Underwritten Offering (other than an offering pursuant to Section 2.1 or Section 2.2), the Company shall select the  managing underwriter or underwriters to administer such Underwritten Offering, which managing underwriter or  underwriters shall be firms of nationally recognized standing.  Section 3.5 Withdrawal of Registration. Any Holder shall have the right to withdraw all or a part of its  Piggyback Notice by giving written notice to the Company of such withdrawal at least five (5) Business Days prior to  the earliest of (i) effectiveness of the applicable Registration Statement, (ii) the filing of any Registration Statement  relating to such Piggyback Registration that includes a price range or (iii) commencement of a roadshow relating to  the Registration Statement for such Piggyback Registration.  ARTICLE IV  REGISTRATION PROCEDURES  Section 4.1 Registration Procedures. If and whenever the Company is under an obligation pursuant to the  provisions of this Agreement to use its reasonable best efforts to effect the registration of any Registrable Securities,  the Company shall, as expeditiously as practicable:  (a) in the case of Registrable Securities, use its reasonable best efforts to cause a Registration  Statement that registers the offer and sale such Registrable Securities to become and remain effective for a period of  180 days or, if earlier, until all of such Registrable Securities covered thereby have been disposed of; provided, that,  in the case of any registration of Registrable Securities on a Shelf Registration Statement which are intended to be  offered on a continuous or delayed basis, such 180-day period shall be extended, if necessary, to keep the Registration  Statement continuously effective, supplemented and amended (including by way of the filing of an Automatic Shelf  
 
 
  12  Registration Statement pursuant to Section 2.2(e)) to the extent necessary to ensure that it is available for sales of such  Registrable Securities, and to ensure that it conforms with the requirements of this Agreement, the Securities Act and  the policies, rules and regulations of the Commission as announced from time to time, until the date as of which all  Registrable Securities registered by such Shelf Registration Statement no longer constitute Registrable Securities;  (b) furnish to each Selling Investor, at least ten (10) Business Days before filing a Registration  Statement, or such shorter period as reasonably practical, copies of such Registration Statement or any amendments  or supplements thereto, which documents shall be subject to the review, comment and approval by one lead counsel  (and any reasonably necessary local counsel) selected by the Holders who beneficially own a majority of such  Registrable Securities, which counsel (who may also be counsel to the Company), in each case, shall be subject to the  reasonable approval of each Holder whose Registrable Securities are included in such registration, and who shall  represent all Selling Investors as a group (the “Selling Investors’ Counsel”) (it being understood that such ten  (10) Business Day period need not apply to successive drafts of the same document proposed to be filed so long as  such successive drafts are supplied to the Selling Investors’ Counsel in advance of the proposed filing by a period of  time that is customary and reasonable under the circumstances);  (c) furnish to each Selling Investor and each underwriter, if any, such number of copies of final  conformed versions of the applicable Registration Statement and of each amendment and supplement thereto (in each  case including all exhibits and any documents incorporated by reference) reasonably requested by such Selling  Investor or underwriter in writing;  (d) in the case of Registrable Securities, prepare and file with the Commission such amendments,  including post-effective amendments, and supplements to such Registration Statement and the applicable Prospectus  or prospectus supplement, including any free writing prospectus as defined in Rule 405 under the Securities Act, used  in connection therewith as may be  (i) reasonably requested by any Holder (to the extent such request relates to information  relating to such Holder), or  (ii) necessary to keep such Registration Statement effective for at least the period  specified in Section 4.1(a) and to comply with the provisions of this Agreement and the Securities Act with respect  to the sale or other disposition of such Registrable Securities, and furnish to each Selling Investor and to the  managing underwriter(s), if any, within a reasonable period of time prior to the filing thereof a copy of any  amendment or supplement to such Registration Statement or Prospectus; provided, however, that, with respect to  each free writing prospectus or other materials to be delivered to purchasers at the time of sale of the Registrable  Securities, the Company shall (i) ensure that no Registrable Securities are sold “by means of” (as defined in  Rule 159A(b) under the Securities Act) such free writing prospectus or other materials without the prior written  consent of the sellers of the Registrable Securities, which free writing prospectus or other materials shall be subject  to the review of counsel to such sellers and (ii) make all required filings of all free writing prospectuses or other  materials with the Commission as are required;  (e) notify in writing each Holder promptly (i) of the receipt by the Company of any notification with  respect to any comments by the Commission with respect to such Registration Statement or any amendment or  supplement thereto or any request by the Commission for the amending or supplementing thereof or for additional  information with respect thereto, (ii) of the receipt by the Company of any notification with respect to the issuance by  the Commission of any stop order suspending the effectiveness of such Registration Statement or any amendment or  supplement thereto or the initiation or threatening of any proceeding for that purpose and (iii) of the receipt by the  Company of any notification with respect to the suspension of the qualification of such Registrable Securities for sale  in any jurisdiction or the initiation or threatening of any proceeding for such purposes and, in any such case as promptly  as reasonably practicable thereafter, prepare and file an amendment or supplement to such Registration Statement or  Prospectus which will correct such statement or omission or effect such compliance;  (f) use its reasonable best efforts to register or qualify such Registrable Securities under such other  securities or blue sky laws of such jurisdictions as the Holders reasonably request and do any and all other acts and  things which may be reasonably necessary or advisable to enable such Holders to consummate their disposition in  such jurisdictions; provided, however, that the Company will not be required to qualify generally to do business,  
 
 
  13  subject itself to general taxation or consent to general service of process in any jurisdiction where it would not  otherwise be required to do so but for this Section 4.1(f);  (g) furnish to each Selling Investor such number of copies of a summary prospectus or other  prospectus, including a preliminary prospectus and any other prospectus filed under Rule 424 under the Securities  Act, in conformity with the requirements of the Securities Act, and such other documents as such Selling Investors or  any underwriter may reasonably request in writing;  (h) notify on a timely basis each Holder of such Registrable Securities at any time when a Prospectus  relating to such Registrable Securities is required to be delivered under the Securities Act, of the happening of any  event as a result of which the Prospectus included in such Registration Statement, as then in effect, includes an untrue  statement of a material fact or omits to state a material fact required to be stated therein or necessary to make the  statements therein not misleading in light of the circumstances then existing and, at the request of such Holder, as  soon as practicable prepare and furnish to such Holder a reasonable number of copies of a supplement to or an  amendment of such Prospectus as may be necessary so that, as thereafter delivered to the offeree of such securities,  such Prospectus shall not include an untrue statement of a material fact or omit to state a material fact required to be  stated therein or necessary to make the statements therein not misleading in light of the circumstances then existing;  (i) make available for inspection by the Selling Investors, the Selling Investors’ Counsel or any  underwriter participating in any disposition pursuant to such Registration Statement and any attorney, accountant or  other agent retained by any such Selling Investor or underwriter (collectively, the “Inspectors”), all pertinent financial  and other records, pertinent corporate documents and properties of the Company (collectively, the “Records”), as shall  be necessary to enable them to exercise their due diligence responsibility, and cause the Company’s officers, directors  and employees to supply all information (together with the Records, the “Information”) requested by any such  Inspector in connection with such Registration Statement and request that the independent public accountants who  have certified the Company’s financial statements make themselves available, at reasonable times and for reasonable  periods, to discuss the business of the Company. Any of the Information which the Company determines in good faith  to be confidential, and of which determination the Inspectors are so notified, shall not be disclosed by the Inspectors  to any other Person unless (i) the disclosure of such Information is necessary to avoid or correct a misstatement or  omission in the Registration Statement, (ii) the release of such Information is requested or required pursuant to a  subpoena, order from a court of competent jurisdiction or other interrogatory by a governmental entity or similar  process; (iii) such Information has been made generally available to the public; or (iv) such Information is or becomes  available to such Inspector on a non-confidential basis other than through the breach of an obligation of confidentiality  (contractual or otherwise). The Holder(s) of Registrable Securities agree that they will, upon learning that disclosure  of such Information is sought in a court of competent jurisdiction or by another governmental entity, give notice to  the Company and allow the Company, at the Company’s expense, to undertake appropriate action to prevent disclosure  of the Information deemed confidential;  (j) in the case of an Underwritten Offering, deliver or cause to be delivered to the underwriters of  such Underwritten Offering a “comfort” letter in customary form and at customary times and covering matters of the  type customarily covered by such comfort letters from its independent certified public accountants;  (k) in the case of an Underwritten Offering, deliver or cause to be delivered to the underwriters of  such Underwritten Offering a written and signed legal opinion or opinions in customary form from its outside or in- house legal counsel dated the closing date of the Underwritten Offering;  (l) provide a transfer agent and registrar (which may be the same entity and which may be the  Company) for such Registrable Securities and deliver to such transfer agent and registrar such customary forms, legal  opinions from its outside or in-house legal counsel, agreements and other documentation as such transfer agent and/or  registrar so request;  (m) in connection with any non-marketed, non-underwritten offering taking the form of a block  trade to a financial institution, “qualified institutional buyer” (as defined in Rule 144A under the Securities Act) or  institutional “accredited investor” (as defined in Rule 501(a) of Regulation D under the Securities Act) or other  disposition of Registrable Securities by any Holder, use its commercially reasonable efforts to timely furnish any  information or take any actions reasonably requested by the Holders in connection with such a block trade, including  the delivery of customary comfort letters, customary legal opinions and customary underwriter due diligence, in each  
 
 
  14  case subject to receipt by the Company, its auditors and legal counsel of representation and documentation by such  Persons to permit the delivery of such comfort letter and legal opinions;  (n) upon the request of any Holder of the Registrable Securities included in such registration, use  reasonable best efforts to cause such Registrable Securities to be listed on any national securities exchange on which  any Shares are listed or, if the Shares are not listed on a national securities exchange, use its reasonable best efforts to  qualify such Registrable Securities for inclusion on such national securities exchange as the Company shall designate;  (o) otherwise use its reasonable best efforts to comply with all applicable rules and regulations of  the Commission and make available to its security holders, as soon as reasonably practicable, earnings statements  (which need not be audited) covering a period of 12 months beginning within three months after the effective date of  the Registration Statement, which earnings statements shall satisfy the provisions of Section 11(a) of the Securities  Act;  (p) notify the Holders and the lead underwriter or underwriters, if any, and (if requested) confirm  such advice in writing, as promptly as reasonably practicable after notice thereof is received by the Company when  the applicable Registration Statement or any amendment thereto has been filed or becomes effective and when the  applicable Prospectus or any amendment or supplement thereto has been filed;  (q) use its reasonable best efforts to prevent the entry of, and use its reasonable best efforts to obtain  as promptly as reasonably practicable the withdrawal of, any stop order with respect to the applicable Registration  Statement or other order suspending the use of any preliminary or final Prospectus;  (r) promptly incorporate in a prospectus supplement or post-effective amendment to the applicable  Registration Statement such information as the lead underwriter or underwriters, if any, and the Holders holding a  majority of each class of Registrable Securities being sold agree (with respect to the relevant class) should be included  therein relating to the plan of distribution with respect to such class of Registrable Securities; and make all required  filings of such prospectus supplement or post-effective amendment as promptly as reasonably practicable after being  notified of the matters to be incorporated in such prospectus supplement or post-effective amendment;  (s) cooperate with each Holder and each underwriter or agent, if any, participating in the disposition  of such Registrable Securities and their respective counsel in connection with any filings required to be made with  FINRA;  (t) provide a CUSIP number or numbers for all such shares, in each case not later than the effective  date of the applicable Registration Statement;  (u) to the extent reasonably requested by the managing underwriter(s) in connection with an  Underwritten Offering (including an Underwritten Offering pursuant to Section 2.1 or Section 2.2), send appropriate  officers of the Company to attend any “road shows” scheduled in connection with any such Underwritten Offering,  with all out-of-pocket costs and expenses incurred by the Company or such officers in connection with such attendance  to be paid by the Company;  (v) enter into such agreements (including an underwriting agreement in customary form) and take  such other actions as the Selling Investor or Selling Investors, as the case may be, owning at least a majority of the  Registrable Securities covered by any applicable Registration Statement, shall reasonably request in order to expedite  or facilitate the disposition of such Registrable Securities, including customary indemnification and contribution to  the effect and to the extent provided in Article V; and  (w) subject to all the other provisions of this Agreement, use its reasonable best efforts to take all  other steps necessary to effect the registration, marketing and sale of such Registrable Securities contemplated hereby.  ARTICLE V  INDEMNIFICATION  Section 5.1 Indemnification by the Company. The Company agrees to indemnify and hold harmless, to the  full extent permitted by law, each Selling Investor, its Affiliates and their respective officers, directors, managers,  
 
 
  15  partners, members and representatives, and each of their respective successors and assigns, and each Person who  Controls a Selling Investor, against any losses, claims, damages, liabilities and expenses caused by any violation by  the Company of the Securities Act or the Exchange Act applicable to the Company and relating to action or inaction  required of the Company in connection with the registration contemplated by a Registration Statement or any untrue  or alleged untrue statement of a material fact contained in any Registration Statement, Prospectus, or preliminary  Prospectus or any amendment thereof or supplement thereto, or any other disclosure document (including reports and  other documents filed under the Exchange Act and any document incorporated by reference therein) or any omission  or alleged omission to state therein a material fact required to be stated therein or necessary to make the statements  therein not misleading; provided, however, that the Company shall not be liable in any such case to the extent that any  such loss, claim, damage, liability or expense arises out of or is based upon an untrue statement or alleged untrue  statement or omission or alleged omission made in any Registration Statement, Prospectus, or preliminary Prospectus  or any amendment thereof or supplement thereto in reliance upon and in conformity with information furnished to the  Company in writing by the Person asserting such loss, claim, damage, liability or expense specifically for use therein.  The Company will also indemnify underwriters, selling brokers, dealer managers and similar securities industry  professionals participating in the distribution, their officers and directors and each Person who Controls such Persons  to the same extent as provided above with respect to the indemnification of the Selling Investor, if requested.  Section 5.2 Indemnification by Selling Investors. Each Selling Investor agrees to indemnify and hold  harmless, to the full extent permitted by law, the Company, the Company’s Controlled Affiliates and their respective  officers, directors, managers, partners, members and representatives, and each of their respective successors and  assigns, and each Person who Controls the Company, against any losses, claims, damages, liabilities and expenses  caused by any untrue or alleged untrue statement of a material fact contained in any Registration Statement,  Prospectus, or preliminary Prospectus or any amendment thereof or supplement thereto or any omission or alleged  omission to state therein a material fact required to be stated therein or necessary to make the statements therein not  misleading, to the extent, but only to the extent, that such untrue statement or omission was made in reliance on and  in conformity with any information furnished in writing by such Selling Investor to the Company expressly for  inclusion in such Registration Statement and has not been corrected in a subsequent writing prior to or concurrently  with the sale of the Registrable Securities to the Person asserting such loss, claim, damage, liability or  expense; provided that the obligation to indemnify shall be several, not joint and several, for each Selling Investor and  in no event shall the liability of any Selling Investor hereunder be greater in amount than the dollar amount of the net  proceeds received by such Selling Investor upon the sale of the Registrable Securities giving rise to such  indemnification obligation.  Section 5.3 Conduct of Indemnification Proceedings. Any Person entitled to indemnification hereunder will  (i) give prompt (but in any event within 30 days after such Person has actual knowledge of the facts constituting the  basis for indemnification) written notice to the indemnifying party of any claim with respect to which it seeks  indemnification and (ii) permit such indemnifying party to assume the defense of such claim with counsel reasonably  satisfactory to the indemnified party; provided, however, that any delay or failure to so notify the indemnifying party  shall relieve the indemnifying party of its obligations hereunder only to the extent, if at all, that it is prejudiced by  reason of such delay or failure. Any Person entitled to indemnification hereunder shall have the right to select and  employ separate counsel and to participate in the defense of such claim, but the fees and expenses of such counsel  shall be at the expense of such Person unless (a) the indemnifying party has agreed in writing to pay such fees or  expenses, (b) the indemnifying party shall have failed to assume the defense of such claim within a reasonable time  after receipt of notice of such claim from the Person entitled to indemnification hereunder and employ counsel  reasonably satisfactory to such Person, (c) the indemnified party has reasonably concluded, based on the advice of  counsel, that there may be legal defenses available to it or other indemnified parties that are different from or in  addition to those available to the indemnifying party or (d) in the reasonable judgment of any such Person, based upon  advice of counsel, a conflict of interest may exist between such Person and the indemnifying party with respect to  such claims (in which case, if such Person notifies the indemnifying party in writing that such Person elects to employ  separate counsel at the expense of the indemnifying party, the indemnifying party shall not have the right to assume  the defense of such claim on behalf of such Person). If such defense is not assumed by the indemnifying party, the  indemnifying party will not be subject to any liability for any settlement made without its consent (but such consent  will not be unreasonably withheld, conditioned or delayed). No indemnifying party shall, without the prior written  consent of the indemnified party, effect any settlement of any pending or threatened action or claim in respect of which  any indemnified party is or could have been a party and indemnity could have been sought hereunder by such  indemnified party unless such settlement includes (i) an unconditional release of such indemnified party from all  
 
 
  16  liability on any claims that are the subject matter of such action, (ii) does not include a statement as to or an admission  of fault, culpability or failure to act by or on behalf of any indemnified party and (iii) does not commit any indemnified  party to take, or hold back from taking, any action. No indemnified party shall, without the written consent of the  indemnifying party, effect the settlement or compromise of, or consent to the entry of any judgment with respect to,  any pending or threatened action or claim in respect of which indemnification or contribution may be sought  hereunder, and no indemnifying party shall be liable for any settlement or compromise of, or consent to the entry of  judgment with respect to, any such action or claim effected without its consent, in each case which consent shall not  be unreasonably withheld, conditioned or delayed.  Section 5.4 Settlement Offers. Whenever the indemnified party or the indemnifying party receives a firm  offer to settle a claim for which indemnification is sought hereunder, it shall promptly notify the other of such offer.  If the indemnifying party refuses to accept such offer within 20 Business Days after receipt of such offer (or of notice  thereof), such claim shall continue to be contested and, if such claim is within the scope of the indemnifying party’s  indemnity contained herein, the indemnified party shall be indemnified pursuant to the terms hereof. An indemnifying  party who is not entitled to, or elects not to, assume the defense of a claim will not be obligated to pay the fees and  expenses of more than one counsel for all parties indemnified by such indemnifying party with respect to such claim  in any one jurisdiction, unless in the written opinion of counsel to the indemnified party, reasonably satisfactory to  the indemnifying party, use of one counsel would be expected to give rise to a conflict of interest between such  indemnified party and any other of such indemnified parties with respect to such claim, in which event the  indemnifying party shall be obligated to pay the fees and expenses of one additional counsel.  Section 5.5 Other Indemnification. Indemnification similar to that specified in this Article V (with  appropriate modifications) shall be given by the Company and each Selling Investor with respect to any required  registration or other qualification of Registrable Securities under Federal or state law or regulation of governmental  authority other than the Securities Act.  Section 5.6 Contribution. If for any reason the indemnification provided for in Section 5.1 or Section 5.2 is  unavailable to an indemnified party or insufficient to hold it harmless as contemplated by Section 5.1 and Section 5.2,  then (i) the indemnifying party shall contribute to the amount paid or payable by the indemnified party as a result of  such loss, claim, damage, liability or expense in such proportion as is appropriate to reflect the relative fault of the  indemnified party and the indemnifying party or (ii) if the allocation provided by clause (i) above is not permitted by  applicable law, in such proportion as shall be appropriate to reflect the relative benefits received by the Company, on  the one hand, and such prospective sellers, on the other hand, from their sale of the Registrable  Securities, provided that, no Selling Investor shall be required to contribute in an amount greater than the dollar  amount of the net proceeds received by such Selling Investor with respect to the sale of the Registrable Securities  giving rise to such indemnification obligation. The amount paid or payable by an indemnified party as a result of the  losses, claims, damages, liabilities or expenses (or actions in respect thereof) referred to above shall be deemed to  include any legal or other fees or expenses reasonably incurred by such indemnified party in connection with  investigating or, except as provided in Section 5.3, defending any such action or claim. No Person guilty of fraudulent  misrepresentation (within the meaning of Section 11(f) of the Securities Act) shall be entitled to contribution from  any Person who was not guilty of such fraudulent misrepresentation. The Holders’ obligations in this Section 5.6 to  contribute shall be several in proportion to the amount of Registrable Securities registered by them and not joint.  ARTICLE VI  EXCHANGE ACT COMPLIANCE; LEGEND REMOVAL  Section 6.1 Exchange Act Compliance. So long as the Company (a) has registered a class of securities under  Section 12 or Section 15 of the Exchange Act and (b) files reports under Section 13 of the Exchange Act, then the  Company shall take all actions reasonably necessary to enable Holders to sell Registrable Securities without  registration under the Securities Act within the limitation of the exemptions provided by Rule 144, including, without  limiting the generality of the foregoing, (i) making and keeping public information available, as those terms are  understood and defined in Rule 144, (ii) filing with the Commission in a timely manner all reports and other  documents required of the Company under the Exchange Act and (iii) at the request of any Holder if such Holder  proposes to sell securities in compliance with Rule 144, forthwith furnish to such Holder, as applicable, a written  statement of compliance with the reporting requirements of the Commission as set forth in Rule 144 and make  available to such Holder such information as will enable the Holder to make sales pursuant to Rule 144.  
 
 
  17  Section 6.2 Legend Removal. The legend on any Shares shall be removed if (i) such Shares are sold pursuant  to an effective Registration Statement, (ii) (A) a Registration Statement covering the resale of such Shares is effective  under the Securities Act and the applicable Holder of such Shares delivers to the Company a representation letter  agreeing that such Shares will be sold under such effective Registration Statement, or (B) at any time after the date  the Company first has a class of securities registered under Section 12 or Section 15 of the Exchange Act, of this  Agreement, such Holder has held (taking into account the provisions of Rule 144(d)(3)) such Shares for at least six  months and is not, and has not been in the preceding three months, an Affiliate of the Company (as defined in Rule  144), and such Holder or permitted assignee provides to the Company any other information the Company deems  reasonably necessary to deliver to the transfer agent an instruction to so remove such legend, (iii) such Shares may be  sold by the Holder thereof free of restrictions pursuant to Rule 144(b) under the Securities Act or (iv) such Shares are  being sold, assigned or otherwise transferred pursuant to Rule 144 under the Securities Act. The Company shall  cooperate with the applicable Holder of Shares covered by this Agreement to effect removal of the legend on such  shares pursuant to this Section 6.2 as soon as reasonably practicable after delivery of notice from such Holder that the  conditions to removal are satisfied (together with any documentation required to be delivered by such Holder pursuant  to the immediately preceding sentence). The Company shall bear all direct costs and expenses associated with the  removal of a legend pursuant to this Section 6.2.  ARTICLE VII  TERMINATION  Section 7.1 Termination. The rights hereunder shall cease to apply to any particular Registrable Security  when it no longer constitutes a Registrable Security, and this Agreement shall terminate when there are no longer any  Registrable Securities outstanding.  ARTICLE VIII  MISCELLANEOUS  Section 8.1 Severability. If any provision of this Agreement is adjudicated by a court of competent  jurisdiction to be invalid, prohibited or unenforceable for any reason, such provision, as to such jurisdiction, shall be  ineffective, without invalidating the remaining provisions of this Agreement or affecting the validity or enforceability  of such provision in any other jurisdiction. Notwithstanding the foregoing, if such provision could be more narrowly  drawn so as not to be invalid, prohibited or unenforceable in such jurisdiction, it shall, as to such jurisdiction, be so  narrowly drawn, without invalidating the remaining provisions of this Agreement or affecting the validity or  enforceability of such provision in any other jurisdiction.  Section 8.2 Governing Law; Submission to Jurisdiction. This Agreement. and all rights and remedies in  connection herewith, shall be governed by and construed in accordance with the laws of the State of Delaware,  excluding any conflict-of-laws rule or principle (whether under the laws of Delaware or any other jurisdiction) that  might refer the governance or the construction of this Agreement to the law of another jurisdiction. THE PARTIES  HERETO VOLUNTARILY AND IRREVOCABLY SUBMIT TO THE JURISDICTION OF ANY U.S. DISTRICT  COURT OR DELAWARE STATE CHANCERY COURT LOCATED, IN EACH CASE, IN WILMINGTON,  DELAWARE, OVER ANY DISPUTE BETWEEN OR AMONG THE PARTIES HERETO ARISING OUT OF THIS  AGREEMENT. EACH PARTY HERETO IRREVOCABLY AGREES THAT ALL SUCH CLAIMS IN RESPECT  OF SUCH DISPUTE SHALL BE HEARD AND DETERMINED IN SUCH COURTS. THE PARTIES HERETO  HEREBY IRREVOCABLY WAIVE, TO THE FULLEST EXTENT PERMITTED BY LAW, ANY OBJECTION  WHICH THEY MAY NOW OR HEREAFTER HAVE TO THE VENUE OF ANY SUCH DISPUTE ARISING OUT  OF THIS AGREEMENT BROUGHT IN SUCH COURT OR ANY DEFENSE OF INCONVENIENT FORUM FOR  THE MAINTENANCE OF SUCH DISPUTE. EACH PARTY HERETO AGREES THAT A JUDGMENT IN ANY  SUCH DISPUTE MAY BE ENFORCED IN OTHER JURISDICTIONS BY SUIT ON THE JUDGMENT OR IN  ANY OTHER MANNER PROVIDED BY LAW. A COPY OF ANY SERVICE OF PROCESS SERVED UPON  THE PARTIES SHALL BE MAILED BY REGISTERED MAIL TO THE RESPECTIVE PARTY EXCEPT THAT,  UNLESS OTHERWISE PROVIDED BY LAW, ANY FAILURE TO MAIL SUCH COPY SHALL NOT AFFECT  THE VALIDITY OF SERVICE OF PROCESS. IF ANY AGENT APPOINTED BY A PARTY REFUSES TO  ACCEPT SERVICE, EACH PARTY AGREES THAT SERVICE UPON THE APPROPRIATE PARTY BY  REGISTERED MAIL SHALL, TO THE FULLEST EXTENT PERMITTED BY LAW, CONSTITUTE  
 
 
  18  SUFFICIENT SERVICE. NOTHING HEREIN SHALL AFFECT THE RIGHT OF A PARTY TO SERVE  PROCESS IN ANY OTHER MANNER PERMITTED BY LAW. EACH PARTY HERETO HEREBY  IRREVOCABLY WAIVES ALL RIGHT TO TRIAL BY JURY IN ANY ACTION, PROCEEDING OR  COUNTERCLAIM ARISING OUT OF OR RELATING TO THIS AGREEMENT.  Section 8.3 Other Registration Rights. From and after the date hereof, the Company shall not, without the  prior written consent of Southwest, enter into any agreement with any current or future holder of any securities of the  Company that would allow such current or future holder to require the Company to include securities in any  registration statement filed by the Company for such Holders on a basis other than pari passu with, or expressly  subordinate to, the piggyback rights of the Holders hereunder provided, that in no event shall the Company enter into  any agreement that would permit another holder of securities of the Company to participate on a pari passu basis (in  terms of priority of cut-back based on advice of underwriters) with a Requesting Holder or a Holder exercising  piggyback rights in a Shelf Take-Down.  Section 8.4 [Reserved].  Section 8.5 Successors and Assigns. Subject to Section 8.5, this Agreement shall inure to the benefit of and  be binding upon the successors and permitted assigns of each of the parties hereto, each of which, in the case of the  Permitted Transferees, shall agree to become subject to the terms of this Agreement as provided for in Section 2.9.  The Company may not assign any of its rights or delegate any of its duties hereunder without the prior written consent  of Southwest.  Section 8.6 Notices. All notices, requests, claims, demands and other communications under this Agreement  shall be in English, shall be in writing and shall be given or made (and shall be deemed to have been duly given or  made upon receipt) by delivery in person, by overnight courier service, or by facsimile or electronic mail with receipt  confirmed (followed by delivery of an original via overnight courier service) to the respective parties at the following  addresses (or at such other address for a party as shall be specified in a notice given in accordance with  this Section 8.6).  (a) if to the Company to:  Centuri Holdings, Inc.  19820 North 7th Avenue, Suite 120  Phoenix, Arizona 85027  Attention: General Counsel  Email:     (b) if to Southwest Gas to:    Southwest Gas Holdings, Inc.  8360 S. Durango Drive  Las Vegas, Nevada 89113  Attention: General Counsel  Email:   All such notices, requests, consents and other communications shall be deemed to have been received (i) in the case  of personal delivery or delivery by facsimile or electronic mail, on the date of such delivery, (ii) in the case of dispatch  by nationally recognized overnight courier, on the next Business Day following such dispatch and (iii) in the case of  mailing, on the fifth (5th) Business Day after the posting thereof.  Section 8.7 Headings. The headings contained in this Agreement are for the sole purpose of convenience of  reference, and shall not in any way limit or affect the meaning or interpretation of any of the terms or provisions of  this Agreement.  Section 8.8 Adjustments. If, and as often as, there are any changes in the Shares or securities convertible into  or exchangeable into or exercisable for Shares as a result of any reclassification, recapitalization, stock split (including  a reverse stock split) or subdivision or combination, exchange or readjustment of shares, or any stock dividend or  
 
 
  19  stock distribution, merger or other similar transaction affecting such Shares or such securities, appropriate adjustment  shall be made in the provisions of this Agreement, as may be required, so that the rights, privileges, duties and  obligations hereunder shall continue with respect to such Shares or such securities as so changed.  Section 8.9 Entire Agreement. This Agreement and the other writings referred to herein constitute the entire  agreement among the parties hereto with respect to the subject matter hereof and supersedes all prior agreements and  understandings, oral or written, with respect to such subject matter.  Section 8.10 Counterparts; Facsimile or .pdf Signature. This Agreement may be executed in one or more  counterparts, each of which shall be deemed an original instrument, but all of which together shall constitute one and  the same document. This Agreement may be executed by facsimile or.pdf signature and a facsimile or.pdf signature  shall constitute an original for all purposes.  Section 8.11 Amendment. This Agreement may not be amended, modified or supplemented without the  written consent of Southwest and the Holders of a majority of the Registrable Securities; provided, however, that, with  respect to a particular Holder or group of Holders, any such amendment, supplement, modification or waiver that  (a) would materially and adversely affect such Holder or group of Holders in any respect or (b) would  disproportionately benefit any other Holder or group of Holders or confer any benefit on any other Holder or group  of Holders to which such Holder of group of Holders would not be entitled, shall not be effective against such Holder  or group of Holders unless approved in writing by such Holder or the Holders of a majority of the Registrable  Securities held by such group of Holders, as the case may be.  Section 8.12 Extensions; Waivers. Any party may, for itself only, (a) extend the time for the performance of  any of the obligations of any other party under this Agreement, (b) waive any inaccuracies in the representations and  warranties of any other party contained herein or in any document delivered pursuant hereto and (c) waive compliance  with any of the agreements or conditions for the benefit of such party contained herein. Any extension or waiver  pursuant to this Section 8.12 will be valid only if set forth in a writing signed by the party to be bound thereby.  No waiver by any party of any default, misrepresentation or breach of warranty or covenant hereunder,  whether intentional or not, may be deemed to extend to any prior or subsequent default, misrepresentation or breach  of warranty or covenant hereunder or affect in any way any rights arising because of any prior or subsequent such  occurrence. Neither the failure nor any delay on the part of any party to exercise any right or remedy under this  Agreement shall operate as a waiver thereof, nor shall any single or partial exercise of any right or remedy preclude  any other or further exercise of the same or of any other right or remedy.  Section 8.13 Further Assurances. Each of the parties hereto shall execute all such further instruments and  documents and take all such further action as the Company may reasonably require in order to effectuate the terms  and purposes of this Agreement.  Section 8.14 No Third-Party Beneficiaries. Except pursuant to Article V, this Agreement shall not confer any  rights or remedies upon any Person other than the parties hereto and their respective successors and permitted assigns  and other Persons expressly named herein.  Section 8.15 Interpretation; Construction. This Agreement has been freely and fairly negotiated among the  parties. If an ambiguity or question of intent or interpretation arises, this Agreement will be construed as if drafted  jointly by the parties and no presumption or burden of proof will arise favoring or disfavoring any party because of  the authorship of any provision of this Agreement. Any reference to any law will be deemed to refer to such law as  amended and all rules and regulations promulgated thereunder, unless the context requires otherwise. The words  “include,” “includes,” and “including” will be deemed to be followed by “without limitation.” Pronouns in masculine,  feminine, and neuter genders will be construed to include any other gender, and words in the singular form will be  construed to include the plural and vice versa, unless the context otherwise requires. The words “this Agreement,”  “herein,” “hereof,” “hereby,” “hereunder” and words of similar import refer to this Agreement as a whole, including  the schedules, exhibits and annexes, as the same may from time to time be amended, modified or supplemented, and  not to any particular subdivision unless expressly so limited. All references to sections, schedules, annexes and exhibits  mean the sections of this Agreement and the schedules, annexes and exhibits attached to this Agreement, except where  otherwise stated. The parties intend that each representation, warranty, and covenant contained herein will have  independent significance. If any party has breached any covenant contained herein in any respect, the fact that there  
 
 
  20  exists another covenant relating to the same subject matter (regardless of the relative levels of specificity) that the  party has not breached will not detract from or mitigate the party’s breach of the first covenant.  * * * *  
 
 
  [Signature Page to Registration Rights Agreement]  IN WITNESS WHEREOF, the parties hereto have executed this Agreement on the date first above written.        CENTURI HOLDINGS, INC.     By:    /s/ William J. Fehrman     Name: William J. Fehrman     Title: Chief Executive Officer     
 
 
  [Signature Page to Registration Rights Agreement]  IN WITNESS WHEREOF, the parties hereto have executed this Agreement on the date first above written.        SOUTHWEST GAS HOLDINGS, INC.:     By:    /s/ Karen S. Haller     Name: Karen S. Haller      Title:   Chief Executive Officer and              President