Registration Rights Agreement



 Exhibit 4.2 
 Execution Version 
 $550,000,000 

CST BRANDS, INC. 
 5.0% Senior Notes due 2023 
 REGISTRATION RIGHTS AGREEMENT

 May 1, 2013 
 CREDIT SUISSE SECURITIES (USA) LLC 

WELLS FARGO SECURITIES, LLC 
 J.P. MORGAN SECURITIES LLC 
 MITSUBISHI UFJ
SECURITIES (USA), INC. 
 RBC CAPITAL MARKETS, LLC 

RBS SECURITIES INC. 
 As Representatives of the Several Purchasers (the “Representatives”), 
 c/o Credit
Suisse Securities (USA) LLC (“Credit Suisse”) 
 Eleven Madison Avenue, 
 New York, New York 10010-3629 
 Ladies and Gentlemen: 

CST Brands, Inc., a Delaware corporation (the “Issuer” or the “Company”) and, prior to the Separation
(as defined below) a wholly-owned subsidiary of Valero Energy Corporation, a Delaware Corporation (“Valero”), proposes to issue $550,000,000 in aggregate principal amount of 5.0% Senior Notes due 2023 (“Notes”). The
Notes will be issued under an indenture, to be dated as of the date of this Agreement (the “Indenture”), among the Company, the entities listed on Annex A hereto (the “Guarantors” and, together with the
Issuer, the “Company”) and U.S. Bank National Association, as Trustee (the “Trustee”). The Notes will be unconditionally guaranteed (the “Guarantees” and, together with the Notes, the
“Initial Securities”) as to payment of principal and interest by the Guarantors. The Company has entered into an agreement (the “Offering Agreement”) with the Representatives, as representatives of the several
initial purchasers named in Schedule A of the Offering Agreement (the “Purchasers”), which confirms the agreements between the Company and the Purchasers relating to the offering and sale of the Initial Securities by the Purchasers,
in order to facilitate the consummation of the Separation. 
 The Initial Securities will initially be delivered by the Company
to Valero in connection with the Separation; immediately thereafter, pursuant to an exchange agreement (the “Exchange Agreement”), dated April 25, 2013, between Valero, Credit Suisse, solely with respect to certain sections
thereof, the Company and, solely with respect to certain sections thereof, Credit Suisse AG, Cayman Islands Branch (“CSAG”), Valero will transfer to Credit Suisse the Initial Securities in a debt-for-debt exchange, which exchange
(in such capacity as holder of the Initial Securities, the “Original Purchaser”) of the Initial Securities serves as payment for and satisfaction and discharge of certain indebtedness of Valero (the “Debt
Obligations”) held by the Original Purchaser. 
 Prior to the original issue date of the Initial Securities (the
“Issue Date”), the Company and Valero will enter into certain agreements that will effect the separation of the Company’s business from Valero, provide a framework for the Company’s relationship with Valero after the
separation and provide for the allocation between the Company and Valero of Valero’s assets, employees, liabilities and obligations (including its investments, property and employee benefits assets and liabilities) attributable prior to, at and
after the Company’s separation from Valero (the “Separation”), as described in the General Disclosure Package and the Final Offering Circular under the caption “The Transactions,” pursuant to the terms of that certain
Separation and Distribution Agreement, to be dated April 29, 2013, by and between Valero and the Company. 







 As an inducement to the Purchasers, the Company is entering into this registration rights
agreement (this “Agreement”) with the Purchasers, for the benefit of the holders of the Initial Securities (including, without limitation, the Purchasers), the Exchange Securities (as defined below) and the Private Exchange
Securities (as defined below) (collectively the “Holders”), and hereby agrees as follows: 

1. Registered Exchange Offer. The Company shall, at its own cost, prepare and file with the Securities and Exchange
Commission (the “Commission”) a registration statement (the “Exchange Offer Registration Statement”) on an appropriate form under the Securities Act of 1933, as amended (the “Securities Act”), with
respect to a proposed offer (the “Registered Exchange Offer”) to the Holders of Transfer Restricted Securities (as defined in Section 6 hereof), who are not prohibited by any law or policy of the Commission from participating
in the Registered Exchange Offer, to issue and deliver to such Holders, in exchange for the Initial Securities, a like aggregate principal amount of debt securities (the “Exchange Securities”) of the Company issued under the
Indenture and identical in all material respects to the Initial Securities (except for the transfer restrictions relating to the Initial Securities and the provisions relating to the matters described in Section 6 hereof) that would be
registered under the Securities Act. 
 The Company shall file the Exchange Offer Registration Statement with the Commission on
or prior to 270 days after the original issue of the Initial Securities (the “Filing Target Date”). The Company shall use all commercially reasonable efforts to cause such Exchange Offer Registration Statement to become effective
under the Securities Act on or prior to 360 days after the Issue Date (the “Effectiveness Target Date”). 
 The
Company shall commence the Registered Exchange Offer within 30 days after the date on which the Exchange Offer Registration Statement is declared effective by the Commission, it being the objective of such Registered Exchange Offer to enable each
Holder of Transfer Restricted Securities electing to exchange the Initial Securities for Exchange Securities (assuming that such Holder (i) is not an affiliate of the Company within the meaning of the Securities Act, (ii) acquires the
Exchange Securities in the ordinary course of such Holder’s business (iii) has no arrangements with any person to participate in the distribution of the Exchange Securities and (iv) is not prohibited by any law or policy of the
Commission from participating in the Registered Exchange Offer) to trade such Exchange Securities from and after their receipt without any limitations or restrictions under the Securities Act and without material restrictions under the securities
laws of the several states of the United States. 
 The Company shall use all commercially reasonable efforts to issue on or
prior to 30 business days, or longer, if required by applicable securities laws, after the date on which the Exchange Offer commences, Exchange Securities in exchange for all Initial Securities tendered prior thereto in the Exchange Offer.

 The Company acknowledges that, pursuant to current interpretations by the Commission’s staff of Section 5 of the
Securities Act, in the absence of an applicable exemption therefrom, (i) each Holder which is a broker-dealer electing to exchange Initial Securities, acquired for its own account as a result of market making activities or other trading
activities, for Exchange Securities (an “Exchanging Dealer”), is required to deliver a prospectus containing substantially the information set forth in Section 3(a) below, and (ii) a Purchaser that elects to sell Exchange
Securities acquired in exchange for Initial Securities constituting any portion of an unsold allotment is required to deliver a prospectus containing the information required by Items 507 or 508 of Regulation S-K under the Securities Act, as
applicable, in connection with such sale. 
 The Company shall use its commercially reasonable efforts to keep the Exchange
Offer Registration Statement effective and to amend and supplement the prospectus contained therein, in order to permit such prospectus to be lawfully delivered by all persons subject to the prospectus delivery requirements of the Securities Act for
such period of time as such persons must comply with such requirements in order to resell the Exchange Securities; provided, however, that (i) in the case where such prospectus and any amendment or supplement thereto must be delivered by an
Exchanging Dealer or a Purchaser, such period shall be the lesser of 180 days and the date on which all Exchanging Dealers and the Purchasers have sold all Exchange Securities held by them (unless such period is extended pursuant to
Section 3(j) below) and (ii) the Company shall, upon request, make such prospectus and any amendment or supplement thereto, available to any broker-dealer for use in connection with any resale of any Exchange Securities for a period of not
less than 90 days after the consummation of the Registered Exchange Offer. 

  
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 If, upon consummation of the Registered Exchange Offer, any Purchaser holds Initial
Securities acquired by it as part of its initial distribution, the Company, simultaneously with the delivery of the Exchange Securities pursuant to the Registered Exchange Offer, shall issue and deliver to such Purchaser, upon the written request of
such Purchaser, in exchange (the “Private Exchange”) for the Initial Securities held by such Purchaser, a like principal amount of debt securities of the Company issued under the Indenture and identical in all material respects
(including the existence of restrictions on transfer under the Securities Act and the securities laws of the several states of the United States, but excluding provisions relating to the matters described in Section 6 hereof) to the Initial
Securities (the “Private Exchange Securities”). The Initial Securities, the Exchange Securities and the Private Exchange Securities are herein collectively called the “Securities.” 

In connection with the Registered Exchange Offer, the Company shall: 

(a) mail to each record Holder a copy of the prospectus forming part of the Exchange Offer Registration Statement,
together with an appropriate letter of transmittal and related documents; 
 (b) keep the Registered
Exchange Offer open for not less than 20 business days (or longer, if required by applicable law) after the date notice thereof is mailed to the record Holders; 
 (c) utilize the services of a depositary for the Registered Exchange Offer, which may be the Trustee or an affiliate of the Trustee; 

(d) permit Holders to withdraw tendered Securities at any time prior to the close of business, New York time, on the
last business day on which the Registered Exchange Offer shall remain open; and 
 (e) otherwise comply with
all applicable laws. 
 As soon as practicable after the close of the Registered Exchange Offer or the Private Exchange, as the
case may be, the Company shall: 
 (x) accept for exchange all the Securities validly tendered and not
withdrawn pursuant to the Registered Exchange Offer and the Private Exchange; 
 (y) deliver to the Trustee
for cancellation all the Initial Securities so accepted for exchange; and 
 (z) cause the Trustee to
authenticate and deliver promptly to each Holder of the Initial Securities, Exchange Securities or Private Exchange Securities, as the case may be, equal in principal amount to the Initial Securities of such Holder so accepted for exchange.

 The Indenture will provide that the Exchange Securities will not be subject to the transfer restrictions set forth in the
Indenture and that all the Securities will vote and consent together on all matters as one class and that none of the Securities will have the right to vote or consent as a class separate from one another on any matter. 

Interest on each Exchange Security and Private Exchange Security issued pursuant to the Registered Exchange Offer and in the Private
Exchange will accrue from the last interest payment date on which interest was paid on the Initial Securities surrendered in exchange therefor or, if no interest has been paid on the Initial Securities, from the Issue Date. 

Each Holder participating in the Registered Exchange Offer shall be required to represent to the Company that at the time of the
consummation of the Registered Exchange Offer (i) any Exchange Securities received by such Holder will be acquired in the ordinary course of business, (ii) such Holder will have no arrangements or understanding with any person to
participate in the distribution of the Initial Securities or the Exchange Securities within the meaning of the Securities Act, (iii) such Holder is not an “affiliate,” as defined in Rule 405 of the Securities Act, of the Company or if
it is an affiliate, such Holder will comply with the registration and prospectus delivery requirements of the Securities Act to the extent applicable, (iv) if such Holder is not a broker-dealer, that it is not engaged in, and does not intend to
engage in, the distribution of the Exchange Securities and (v) if such Holder is a broker-dealer, that it will receive Exchange Securities for its own account in exchange for Initial Securities that were acquired as a result of market-making
activities or other trading activities and that it will be required to acknowledge that it will deliver a prospectus in connection with any resale of such Exchange Securities. 

  
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 Notwithstanding any other provisions hereof, the Company will ensure that (i) any
Exchange Offer Registration Statement and any amendment thereto and any prospectus forming part thereof and any supplement thereto complies in all material respects with the Securities Act and the rules and regulations thereunder, (ii) any
Exchange Offer Registration Statement and any amendment thereto does not, when it becomes effective, contain 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 and (iii) any prospectus forming part of any Exchange Offer Registration Statement, and any supplement to such prospectus, does not include an untrue statement of a material fact or omit to state a material fact required
to be stated therein or necessary in order to make the statements therein, in the light of the circumstances under which they were made, not misleading. 
 2. Shelf Registration. 
 (a) If, (i) the
Company is not permitted to effect a Registered Exchange Offer, as contemplated by Section 1 hereof, because the Registered Exchange Offer or the Exchange Offer Registration Statement is not permitted by applicable law or Commission policy,
(ii) the Exchange Offer Registration Statement is not filed with the Commission by the Target Filing Date, (iii) any Purchaser so requests with respect to the Initial Securities (or the Private Exchange Securities) not eligible to be
exchanged for Exchange Securities in the Registered Exchange Offer and held by it following consummation of the Registered Exchange Offer or (iv) any Holder (other than an Exchanging Dealer) notifies the Company in writing within 20 business
days following the consummation of the Registered Exchange Offer that it is or was not eligible to participate in the Registered Exchange Offer or, in the case of any Holder (other than an Exchanging Dealer) that participates in the Registered
Exchange Offer, such Holder does not receive freely tradeable Exchange Securities on the date of the exchange, then the Company shall use its commercially reasonable efforts to (x) file with the Commission a registration statement (the
“Shelf Registration Statement” and, together with the Exchange Offer Registration Statement, a “Registration Statement”) on an appropriate form under the Securities Act relating to the offer and sale of the Transfer
Restricted Securities (as defined in Section 6 hereof) by the Holders thereof from time to time in accordance with the methods of distribution set forth in the Shelf Registration Statement and Rule 415 under the Securities Act (hereinafter, the
“Shelf Registration”) or prior to the later of (A) 45 days after such filing obligation arises and (B) the Filing Target Date and (x) cause the Shelf Registration Statement to be declared effective by the Commission
on or prior to the later of (A) 90 days after the filing of the Shelf Registration and (B) the Effectiveness Target Date; provided, however, that no Holder (other than a Purchaser) shall be entitled to have the Securities held by it
covered by such Shelf Registration Statement unless such Holder agrees in writing to be bound by all the provisions of this Agreement applicable to such Holder. 
 (b) The Company shall use its commercially reasonable efforts to keep the Shelf Registration Statement continuously effective in order to permit the prospectus included therein to be lawfully
delivered by the Holders of the relevant Securities, for a period of nine months (or for such longer period if extended pursuant to Section 3(j) below) from the date on which the Shelf Registration Statement is declared effective by the
Commission, or such shorter period that will terminate when all the Securities covered by the Shelf Registration Statement (i) have been sold pursuant thereto or (ii) may be freely sold without volume restrictions by non-affiliates
pursuant to Rule 144 under the Securities Act, do not bear a restrictive legend and do not bear a restrictive CUSIP number. 
 (c) Notwithstanding any other provisions of this Agreement to the contrary, the Company shall cause the Shelf Registration Statement and the related prospectus and any amendment or supplement
thereto, as of the effective date of the Shelf Registration Statement, amendment or supplement, (i) to comply in all material respects with the applicable requirements of the Securities Act and the rules and regulations of the Commission and
(ii) not to contain any untrue statement of a material fact or omit to state a material fact required to be stated therein or necessary in order to make the statements therein, in light of the circumstances under which they were made, not
misleading. 

  
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 3. Registration Procedures. In connection with any Shelf Registration
contemplated by Section 2 hereof and, to the extent applicable, any Registered Exchange Offer contemplated by Section 1 hereof, the following provisions shall apply: 

(a) The Company shall (i) furnish to each Purchaser, prior to the filing thereof with the Commission, a copy of
the Shelf Registration Statement and each amendment thereof and each supplement, if any, to the prospectus included therein and, in the event that a Purchaser (with respect to any portion of an unsold allotment from the original offering) is
participating in the Shelf Registration Statement, the Company shall use its commercially reasonable efforts to reflect in each such document, when so filed with the Commission, such comments as such Purchaser reasonably may propose; (ii) if
requested by a Purchaser, include the information substantially in the form set forth in Annex B hereto on the cover, in Annex C hereto in the “Exchange Offer Procedures” section and the “Purpose of the Exchange
Offer” section and in Annex D hereto in the “Plan of Distribution” section of the prospectus forming a part of the Exchange Offer Registration Statement and include the information substantially in the form set forth in
Annex E hereto in the Letter of Transmittal delivered pursuant to the Registered Exchange Offer; (iii) if requested by a Purchaser, include the information required by Items 507 or 508 of Regulation S-K under the Securities Act, as
applicable, in the prospectus forming a part of the Exchange Offer Registration Statement; (iv) if requested by a Purchaser, include within the prospectus contained in the Exchange Offer Registration Statement a section entitled “Plan of
Distribution,” which shall contain a customary summary statement of the positions taken or policies made by the staff of the Commission with respect to the potential “underwriter” status of any broker-dealer that is the beneficial
owner (as defined in Rule 13d-3 under the Securities Exchange Act of 1934, as amended (the “Exchange Act”)) of Exchange Securities received by such broker-dealer in the Registered Exchange Offer (a “Participating
Broker-Dealer”), whether such positions or policies have been publicly disseminated by the staff of the Commission or such positions or policies, represent the prevailing views of the staff of the Commission; and (v) in the case of a
Shelf Registration Statement, include in the prospectus included in the Shelf Registration Statement (or, if permitted by Commission Rule 430B(b), in a prospectus supplement that becomes a part thereof pursuant to Commission Rule 430B(f))
that is delivered to any Holder pursuant to Section 3(d) and (f), the names of the Holders, who propose to sell Securities pursuant to the Shelf Registration Statement, as selling securityholders. 

(b) The Company shall give written notice to the Purchasers, the Holders of the Securities and any Participating
Broker-Dealer from whom the Company has received prior written notice that it will be a Participating Broker-Dealer in the Registered Exchange Offer (which notice pursuant to clauses (ii)-(v) hereof shall be accompanied by an instruction to
suspend the use of the prospectus until the requisite changes have been made): 
 (i) when a Shelf
Registration Statement or any amendment thereto has been filed with the Commission and when the Registration Statement or any post-effective amendment thereto has become effective; 

(ii) of any request by the Commission for amendments or supplements to the Registration Statement or the prospectus
included therein or for additional information; 
 (iii) of the issuance by the Commission of any stop order
suspending the effectiveness of the Registration Statement or the initiation of any proceedings for that purpose, or the issuance by the Commission of a notification of objection to the use of the form on which the Registration Statement has been
filed, and of the happening of any event that causes the Company to become an “ineligible issuer,” as defined in Commission Rule 405. 
 (iv) of the receipt by the Company or its legal counsel of any notification with respect to the suspension of the qualification of the Securities for sale in any jurisdiction or the initiation or
threatening of any proceeding for such purpose; and 
 (v) of the happening of any event that requires the
Company to make changes in the Registration Statement or the prospectus in order that the Registration Statement or the prospectus 

  
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do not contain an untrue statement of a material fact nor omit to state a material fact required to be stated therein or necessary to make the statements therein (in the case of the prospectus,
in light of the circumstances under which they were made) not misleading. 
 (c) The Company shall use
commercially reasonable efforts to obtain the withdrawal at the earliest possible time, of any order suspending the effectiveness of the Registration Statement. 
 (d) The Company shall, if the Holder so requests in writing, furnish to each Holder of Securities included within the coverage of the Shelf Registration, without charge, at least one copy of the
Shelf Registration Statement and any post-effective amendment or supplement thereto, including financial statements and schedules, and all exhibits thereto (including those, if any, incorporated by reference). The Company shall not, without the
prior consent of the Purchasers, make any offer relating to the Securities that would constitute a “free writing prospectus,” as defined in Commission Rule 405. 

(e) The Company shall, upon request, deliver to each Exchanging Dealer and each Purchaser, and to any other Holder
who so requests, without charge, at least one copy of the Exchange Offer Registration Statement and any post-effective amendment thereto, including financial statements and schedules, and, if any Purchaser or any such Holder requests, all exhibits
thereto (including those incorporated by reference). 
 (f) The Company shall, during the period of
effectiveness of the Shelf Registration Statement, if the Holder so requests in writing, deliver to each Holder of Securities included within the coverage of the Shelf Registration, without charge, as many copies of the prospectus (including each
preliminary prospectus) included in the Shelf Registration Statement and any amendment or supplement thereto as such person may reasonably request. The Company consents, subject to the provisions of this Agreement, to the use of the prospectus or
any amendment or supplement thereto by each of the selling Holders of the Securities in connection with the offering and sale of the Securities covered by the prospectus, or any amendment or supplement thereto, included in the Shelf Registration
Statement. 
 (g) The Company shall, if so requested in writing, deliver to each Purchaser, any Exchanging
Dealer, any Participating Broker-Dealer and such other persons required to deliver a prospectus following the Registered Exchange Offer, without charge, as many copies of the final prospectus included in the Exchange Offer Registration Statement and
any amendment or supplement thereto as such persons may reasonably request. The Company consents, subject to the provisions of this Agreement, to the use of the prospectus or any amendment or supplement thereto by any Purchaser, if necessary, any
Participating Broker-Dealer and such other persons required to deliver a prospectus following the Registered Exchange Offer in connection with the offering and sale of the Exchange Securities covered by the prospectus, or any amendment or supplement
thereto, included in such Exchange Offer Registration Statement. 
 (h) Prior to any public offering of the
Securities pursuant to any Registration Statement, the Company shall register or qualify or cooperate with the Holders of the Securities included therein and their respective counsel in connection with the registration or qualification of the
Securities for offer and sale under the securities or “blue sky” laws of such states of the United States as any Holder of the Securities reasonably requests in writing and do any and all other acts or things reasonably necessary or
advisable to enable the offer and sale in such jurisdictions of the Securities covered by such Registration Statement; provided, however, that the Company shall not be required to (i) qualify generally to do business in any jurisdiction where
it is not then so qualified or (ii) take any action which would subject it to general service of process or to taxation in any jurisdiction where it is not then so subject. 

(i) The Company shall use commercially reasonable efforts to cooperate with the Holders of the Securities in
certificated form to facilitate the timely preparation and delivery of certificates representing the Securities to be sold pursuant to any Registration Statement free of any restrictive legends and in such denominations and registered in such names
as the Holders may request a reasonable period of time prior to sales of the Securities pursuant to such Registration Statement. 
 (j) Upon the occurrence of any event contemplated by paragraphs (ii) through (v) of Section 3(b) above during the period for which the Company is required to maintain an effective
Registration Statement, 

  
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the Company shall promptly prepare and file a post-effective amendment to the Registration Statement or a supplement to the related prospectus and any other required document so that, as
thereafter delivered to Holders of the Securities or purchasers of Securities, the prospectus will not contain an untrue statement of a material fact or omit to state any material fact required to be stated therein or necessary to make the
statements therein, in light of the circumstances under which they were made, not misleading. If the Company notifies the Purchasers, the Holders of the Securities and any known Participating Broker-Dealer in accordance with paragraphs
(ii) through (v) of Section 3(b) above to suspend the use of the prospectus until the requisite changes to the prospectus have been made, then the Purchasers, the Holders of the Securities and any such Participating Broker-Dealers
shall suspend use of such prospectus, and the period of effectiveness of the Shelf Registration Statement provided for in Section 2(b) above and the Exchange Offer Registration Statement provided for in Section 1 above shall each be
extended by the number of days from and including the date of the giving of such notice to and including the date when the Purchasers, the Holders of the Securities and any known Participating Broker-Dealer shall have received such amended or
supplemented prospectus pursuant to this Section 3(j). During the period during which the Company is required to maintain an effective Shelf Registration Statement pursuant to this Agreement, the Company will, prior to any expiration of that
Shelf Registration Statement file, and use its commercially reasonable efforts to cause to be declared effective (unless it becomes effective automatically upon filing) within a period that avoids any interruption in the ability of Holders of
Securities covered by the expiring Shelf Registration Statement to make registered dispositions, a new registration statement relating to the Securities, which shall be deemed the “Shelf Registration Statement” for purposes of this
Agreement. 
 (k) Not later than the effective date of the applicable Registration Statement, the Company
will provide a CUSIP number for the Exchange Securities or the Private Exchange Securities, as the case may be, and provide the applicable trustee with printed certificates for the Exchange Securities or the Private Exchange Securities, as the case
may be, in a form eligible for deposit with The Depository Trust Company. 
 (l) The Company will comply in
all material respects with all rules and regulations of the Commission to the extent and so long as they are applicable to the Registered Exchange Offer or the Shelf Registration and will make generally available to its security holders (or
otherwise provide in accordance with Section 11(a) of the Securities Act) an earnings statement satisfying the provisions of Section 11(a) of the Securities Act, no later than 45 days after the end of a 12-month period (or 90 days, if such
period is a fiscal year) beginning with the first month of the Company’s first fiscal quarter commencing after the effective date of the Registration Statement, which statement shall cover such 12-month period. 

(m) The Company shall cause the Indenture to be qualified under the Trust Indenture Act of 1939, as amended, in a
timely manner and containing such changes, if any, as shall be necessary for such qualification. In the event that such qualification would require the appointment of a new trustee under the Indenture, the Company shall appoint a new trustee
thereunder pursuant to the applicable provisions of the Indenture. 
 (n) Each Holder of Securities to be
sold pursuant to the Shelf Registration Statement shall, as a condition to the Company’s obligation to include such Holder’s Securities in such Shelf Registration Statement, furnish to the Company, upon the Company’s request, such
information regarding the Holder and the distribution of the Securities as the Company may from time to time reasonably require for inclusion in the Shelf Registration Statement, and the Company may exclude from such registration the Securities of
any Holder that unreasonably fails to furnish such information within a reasonable time after receiving such request. 
 (o) The Company shall enter into such customary agreements (including, if requested, an underwriting agreement in customary form) and take all such other action, if any, as any Holder of the
Securities shall reasonably request in order to facilitate the disposition of the Securities pursuant to any Shelf Registration. 
 (p) In the case of any Shelf Registration, the Company shall (i) make reasonably available for inspection by the Holders of the Securities, any underwriter participating in any disposition
pursuant to the 

  
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Shelf Registration Statement and any attorney, accountant or other agent retained by the Holders of the Securities or any such underwriter all relevant financial and other records, pertinent
corporate documents and properties of the Company and (ii) cause the Company’s officers, directors, employees, accountants and auditors to supply all relevant information reasonably requested by the Holders of the Securities or any such
underwriter, attorney, accountant or agent in connection with the Shelf Registration Statement, in each case, as shall be reasonably necessary to enable such persons, to conduct a reasonable investigation within the meaning of Section 11 of the
Securities Act; provided, however, that the foregoing inspection and information gathering shall be coordinated on behalf of the Purchasers by you and on behalf of the other parties, by one counsel designated by and on behalf of such other parties
as described in Section 4 hereof. 
 (q) In the case of any Shelf Registration, the Company, if
requested by any Holder of Securities covered thereby, shall cause (i) its counsel to deliver an opinion and updates thereof relating to the Securities in customary form addressed to such Holders and the managing underwriters, if any, thereof
and dated, in the case of the initial opinion, the effective date of such Shelf Registration Statement, which opinion and updates thereof, in form, scope and substance, shall be reasonably satisfactory to such Holders and such managing underwriters,
if any, and their respective counsel; (ii) its officers to execute and deliver all customary documents and certificates and updates thereof requested by any underwriters of the applicable Securities and (iii) its independent public
accountants to provide to the selling Holders of the applicable Securities and any underwriter therefor a comfort letter in customary form and covering matters of the type customarily covered in comfort letters in connection with primary
underwritten offerings, subject to receipt of appropriate documentation as contemplated, and only if permitted, by AU Section 634 (as amended). 
 (r) If a Registered Exchange Offer or a Private Exchange is to be consummated, upon delivery of the Initial Securities by Holders to the Company (or to such other Person as directed by the Company)
in exchange for the Exchange Securities or the Private Exchange Securities, as the case may be, the Company shall mark, or cause to be marked, on the Initial Securities so exchanged that such Initial Securities are being canceled in exchange for the
Exchange Securities or the Private Exchange Securities, as the case may be; in no event shall the Initial Securities be marked as paid or otherwise satisfied. 
 (s) In the event that any broker-dealer registered under the Exchange Act shall underwrite any Securities or participate as a member of an underwriting syndicate or selling group or “assist in
the distribution” (within the meaning of the Conduct Rules (the “Rules”) of the Financial Industry Regulatory Authority, Inc. (“FINRA”)) thereof, whether as a Holder of such Securities or as an underwriter, a
placement or sales agent or a broker or dealer in respect thereof, or otherwise, the Company will cooperate with such broker-dealer in complying with the requirements of such Rules, including, without limitation, by (i) if such Rules, including
Rule 5121, shall so require, engaging a “qualified independent underwriter” (as defined in Rule 5121) to participate in the preparation of the Registration Statement relating to such Securities, to exercise usual standards of due diligence
in respect thereto and, if any portion of the offering contemplated by such Registration Statement is an underwritten offering or is made through a placement or sales agent, to recommend the yield of such Securities, (ii) indemnifying any such
qualified independent underwriter to the extent of the indemnification of underwriters provided in Section 5 hereof and (iii) providing such information to such broker-dealer as may be required in order for such broker-dealer to comply
with the requirements of the Rules. 
 (t) The Company shall use its commercially reasonable efforts to take
all other steps necessary to effect the registration of the Securities covered by a Registration Statement contemplated hereby. The Company shall be deemed not to have used commercially reasonable efforts to effect the registration of the Securities
if the Company voluntarily takes any action that would result in Holders of Transfer Restricted Securities covered thereby not being able to offer and sell such Transfer Restricted Securities during that period, unless compliance with this section
(i) requires the public disclosure of material non-public information concerning any transaction or negotiations involving the Issuer or any of its consolidated subsidiaries that would materially interfere with such transaction or negotiations
or obtaining any financial statements relating to any such acquisition or business combination required to be included in the Shelf Registration Statement or Exchange Offer Registration Statement would be impracticable, (ii) requires the public
disclosure of material non-public information concerning the Issuer at a time when its directors and 

  
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executive officers are restricted from trading in the Issuer’s securities or (iii) otherwise materially interfere with financing plans, acquisition activities or business activities of
the Company (the period during which a Registration Statement is not available under clauses (i), (ii) or (iii) above, the “Blackout Period”). The Blackout Period shall not exceed 90 days in any twelve-month period. No
Special Interest shall accrue during any Blackout Period. 
 4. Registration Expenses. The Company shall bear all
fees and expenses incurred in connection with the performance of its obligations under Sections 1 through 3 hereof (including the reasonable fees and expenses, if any, of Latham & Watkins LLP, counsel for the Purchasers, incurred in
connection with the Registered Exchange Offer), whether or not the Registered Exchange Offer or a Shelf Registration is filed or becomes effective, and, in the event of a Shelf Registration, shall bear or reimburse the Holders of the Securities
covered thereby for the reasonable fees and disbursements of Latham & Watkins LLP (or if such firm is unable to represent such Holders, one firm of counsel designated by the Holders of a majority in principal amount of the Initial
Securities covered thereby) who shall act as counsel for the Holders of the Initial Securities in connection therewith. 

5. Indemnification. (a) The Issuer and the Guarantors, jointly and severally, will indemnify and hold harmless each
Holder of the Securities, any Participating Broker-Dealer, the officers, employees, agents, partners, members, directors and its affiliates of each such Holder or Participating Broker-Dealer and each person, if any, who controls such Holder or
Participating Broker-Dealer within the meaning of Section 15 of the Securities Act or Section 20 of the Exchange Act (each Holder, any Participating Broker-Dealer and such controlling persons are referred to collectively as the
“Indemnified Parties”) from and against any and all losses, claims, damages or liabilities, joint or several, to which such Indemnified Party may become subject, under the Securities Act, the Exchange Act, other Federal or state
statutory law or regulation or otherwise, insofar as such losses, claims, damages or liabilities (or actions in respect thereof) arise out of or are based upon any untrue statement or alleged untrue statement of any material fact contained in a
Registration Statement or prospectus or in any amendment or supplement thereto or in any preliminary prospectus or “issuer free writing prospectus,” as defined in Commission Rule 433 (“Issuer FWP”), relating to a
Shelf Registration, or arise out of or are based upon the omission or alleged omission of a material fact necessary in order to make the statements therein, in the light of the circumstances under which they were made, not misleading and will
reimburse each Indemnified Party for any legal or other expenses reasonably incurred by such Indemnified Party in connection with investigating or defending against any loss, claim, damage, liability, action, litigation, investigation or proceeding
whatsoever (whether or not such Indemnified Party is a party thereto) whether threatened or commenced and in connection with the enforcement of this provision with respect to any of the above as such expenses are incurred; provided, however, that
(i) the Issuer and the Guarantors will not be liable in any such case to the extent that any such loss, claim, damage or liability arises out of or is based upon an untrue statement or alleged untrue statement in or omission or alleged omission
from any of such documents in reliance upon and in conformity with written information pertaining to such Holder and furnished to the Company by or on behalf of such Holder specifically for inclusion therein and (ii) with respect to any untrue
statement or omission or alleged untrue statement or omission made in any preliminary prospectus relating to a Shelf Registration Statement, the indemnity agreement contained in this subsection (a) shall not inure to the benefit of any Holder
or Participating Broker-Dealer from whom the person asserting any such losses, claims, damages or liabilities purchased the Securities concerned, to the extent that a prospectus relating to such Securities was required to be delivered (including
through satisfaction of the conditions of Commission Rule 172) by such Holder or Participating Broker-Dealer under the Securities Act in connection with such purchase and any such loss, claim, damage or liability of such Holder or Participating
Broker-Dealer results from the fact that there was not conveyed to such person, at or prior to the time of the sale of such Securities to such person, an amended or supplemented prospectus or, if permitted by Section 3(d), an Issuer FWP
correcting such untrue statement or omission or alleged untrue statement or omission if the Company had previously furnished copies thereof to such Holder or Participating Broker-Dealer, and any such Holder or Participating Broker-Dealer shall
indemnify and hold harmless each Holder Indemnified Party from any such loss, claim, damage, or liability; provided further, however, that this indemnity agreement will be in addition to any liability which the Company may otherwise have to such
Indemnified Party. 
 (b) Each Holder of the Securities, severally and not jointly, will indemnify and hold harmless
(i) the Issuer and the Guarantors and each of their respective directors and officers and (ii) each person, if any, who controls the Issuer or such Guarantor within the meaning of Section 15 of the Securities Act or Section 20 of
the Exchange Act (the “Holder Indemnified Parties”) from and against any losses, claims, damages or liabilities to which such Holder Indemnified Party may become subject, under the Securities Act, the Exchange Act, other Federal or
state 

  
 9 








 
statutory law or regulation or otherwise, insofar as such losses, claims, damages or liabilities (or actions in respect thereof) arise out of or are based upon any untrue statement or alleged
untrue statement of any material fact contained in a Registration Statement or prospectus or in any amendment or supplement thereto or in any preliminary prospectus or Issuer FWP relating to a Shelf Registration, or arise out of or are based upon
the omission or the alleged omission of a material fact necessary in order to make the statements therein, in the light of the circumstances under which they were made, not misleading, in each case to the extent, but only to the extent, that such
untrue statement or alleged untrue statement or omission or alleged omission was made in reliance upon and in conformity with written information pertaining to such Holder and furnished to the Company by or on behalf of such Holder specifically for
inclusion therein; and, subject to the limitation set forth immediately preceding this clause, shall will reimburse any legal or other expenses reasonably incurred by such Holder Indemnified Party in connection with investigating or defending
against any such loss, claim, damage, liability, action, litigation, investigation or proceeding whatsoever (whether or not such Holder Indemnified Party is a party thereto) whether threatened or commenced based upon any such untrue statement or
omission, or any such alleged untrue statement or omission as such expenses are incurred. 
 (c) Promptly after receipt by
an indemnified party under this Section 5 of notice of the commencement of any action, such indemnified party will, if a claim in respect thereof is to be made against the indemnifying party under subsection (a) or (b) above, notify
the indemnifying party of the commencement thereof; but the failure to notify the indemnifying party shall not relieve it from any liability that it may have under subsection (a) or (b) above except to the extent that it has been
materially prejudiced (through the forfeiture of substantive rights or defenses) by such failure; and provided further that the failure to notify the indemnifying party shall not relieve it from any liability that it may have to an indemnified party
otherwise than under subsection (a) or (b) above. In case any such action is brought against any indemnified party and it notifies the indemnifying party of the commencement thereof, the indemnifying party will be entitled to participate
therein and, to the extent that it may wish, jointly with any other indemnifying party similarly notified, to assume the defense thereof, with counsel reasonably satisfactory to such indemnified party (who shall not, except with the consent of the
indemnified party, be counsel to the indemnifying party), and after notice from the indemnifying party to such indemnified party of its election so to assume the defense thereof, the indemnifying party will not be liable to such indemnified party
under this Section 5 for any legal or other expenses subsequently incurred by such indemnified party in connection with the defense thereof other than reasonable costs of investigation. No indemnifying party shall, without the prior written
consent of the indemnified party, effect any settlement of any pending or threatened action 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 (i) includes an unconditional release of such indemnified party from all liability on any claims that are the subject matter of such action and (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. 
 (d) If the indemnification provided for in this Section 5
is unavailable or insufficient to hold harmless an indemnified party under subsections (a) or (b) above, then each indemnifying party shall contribute to the amount paid or payable by such indemnified party as a result of the losses,
claims, damages or liabilities referred to in subsection (a) or (b) above (i) in such proportion as is appropriate to reflect the relative benefits received by the indemnifying party or parties on the one hand and the indemnified
party on the other from the exchange of the Securities, pursuant to the Registered Exchange Offer, or (ii) if the allocation provided by the foregoing clause (i) is not permitted by applicable law, in such proportion as is appropriate to
reflect not only the relative benefits referred to in clause (i) above but also the relative fault of the indemnifying party or parties on the one hand and the indemnified party on the other in connection with the statements or omissions that
resulted in such losses, claims, damages or liabilities (or actions in respect thereof) as well as any other relevant equitable considerations. The relative fault shall be determined by reference to, among other things, whether the untrue or alleged
untrue statement of a material fact or the omission or alleged omission to state a material fact relates to information supplied by the Company on the one hand or such Holder or such other indemnified party, as the case may be, on the other, and the
parties’ relative intent, knowledge, access to information and opportunity to correct or prevent such untrue statement or omission. The amount paid by an indemnified party as a result of the losses, claims, damages or liabilities referred to in
the first sentence of this subsection (d) shall be deemed to include any legal or other expenses reasonably incurred by such indemnified party in connection with investigating or defending any action or claim which is the subject of this
subsection (d). Notwithstanding the provisions of this subsection (d), no Holder of Securities shall be required to contribute any amount in excess of the amount by which the net proceeds received by such Holders from the sale of the Securities
pursuant to a Registration Statement exceeds the amount of damages which such Holders have otherwise been required to pay by reason of such untrue or alleged untrue statement or omission or alleged omission. 

(e) The agreements contained in this Section 5 shall survive the sale of the Securities pursuant to a Registration Statement
and shall remain in full force and effect, regardless of any termination or cancellation of this Agreement or any investigation made by or on behalf of any indemnified party. 

  
 10 









 6. Special Interest Under Certain Circumstances. (a) Additional interest
(the “Special Interest”) with respect to the Initial Securities shall be assessed as follows if any of the following events occur (each such event in clauses (i) through (iii) below a “Registration
Default”: 
 (i) If on or before the Filing Target Date, a Registration Statement has not been filed
with the Commission; 
 (ii) If on or before the Effectiveness Target Date, a Registration Statement has not been
declared effective by the Commission; 
 (ii) If the Company fails to consummate the Exchange Offer within 30
business days of the Effectiveness Target Date with respect to the Exchange Offer Registration Statement (or longer, if required by applicable securities laws); or 

(iv) If after a Registration Statement is declared (or becomes automatically) effective (A) such Registration
Statement thereafter ceases to be effective; or (B) such Registration Statement or the related prospectus ceases to be usable (except as permitted in paragraph (b)) in connection with resales of Transfer Restricted Securities during the
periods specified herein because either (1) any event occurs as a result of which the related prospectus forming part of such Registration Statement would include any untrue statement of a material fact or omit to state any material fact
necessary to make the statements therein in the light of the circumstances under which they were made not misleading, (2) it shall be necessary to amend such Registration Statement or supplement the related prospectus, to comply with the
Securities Act or the Exchange Act or the respective rules thereunder, or (3) such Registration Statement is a Shelf Registration Statement that has expired before a replacement Shelf Registration Statement has become effective. 

With respect to the first 90-day period immediately following the occurrence of the first Registration Default, Special Interest will be
paid in an amount equal to 0.25% per annum of the principal amount of the Transfer Restricted Securities outstanding. The amount of the Special Interest will increase by an additional 0.25% per annum with respect to each subsequent 90-day
period until all Registration Defaults have been cured, up to a maximum amount of Special Interest for all Registration Defaults of 1.0% per annum of the principal amount of the Transfer Restricted Securities outstanding. 

All accrued Special Interest will be paid by the Company and the Guarantors on the next scheduled Interest Payment Date (as defined in
the Indenture) to The Depository Trust Company in the same manner as other interest on the Securities. On the date of cure of all Registration Defaults, the accrual of Special Interest will cease. 

(b) A Registration Default referred to in Section 6(a)(iii)(B) hereof shall be deemed not to have occurred and be continuing in
relation to a Shelf Registration Statement or the related prospectus if (i) such Registration Default has occurred solely as a result of (x) the filing of a post-effective amendment to such Shelf Registration Statement to incorporate
annual audited financial information with respect to the Company where such post-effective amendment is not yet effective and needs to be declared effective to permit Holders to use the related prospectus or (y) other material events, with
respect to the Company that would need to be described in such Shelf Registration Statement or the related prospectus and (ii) in the case of clause (y), the Company is proceeding promptly and in good faith to amend or supplement such Shelf
Registration Statement and related prospectus to describe such events; provided, however, that in any case if such Registration Default occurs for a continuous period in excess of 30 days, Special Interest shall be payable in accordance with the
above paragraph from the day such Registration Default occurs until such Registration Default is cured. 

  
 11 









 (c) The remedy set forth in Section 6(a) hereof shall constitute liquidated damages and
shall be the sole and exclusive remedy of the Holders for each and any Registration Default. 
 (d) All accrued Special
Interest will be paid by the Company and the Guarantors on the next scheduled Interest Payment Date (as defined in the Indenture) to The Depository Trust Company in the same manner as other interest on the Securities. On the date of cure of all
Registration Defaults, the accrual of Special Interest will cease. 
 (e) “Transfer Restricted Securities”
means each Security until (i) the date on which such Transfer Restricted Security has been exchanged by a person other than a broker-dealer for a freely transferable Exchange Security in the Registered Exchange Offer, (ii) following the
exchange by a broker-dealer in the Registered Exchange Offer of a Initial Security for an Exchange Note, the date on which such Exchange Note is sold to a purchaser who receives from such broker-dealer on or prior to the date of such sale a copy of
the prospectus contained in the Exchange Offer Registration Statement, (iii) the date on which such Initial Security has been effectively registered under the Securities Act and disposed of in accordance with the Shelf Registration Statement or
(iv) the date on which such Security is distributed to the public pursuant to Rule 144 under the Securities Act; provided, that an Initial Security will not cease to be a Transfer Restricted Security for purposes of the Registered Exchange
Offer by virtue of this clause (iv). 
 7. Copy of Agreement. The Company will provide a copy of this Agreement
to prospective purchasers of Initial Securities identified to the Company by the Purchasers upon request. 

8. Underwritten Registrations. If any of the Transfer Restricted Securities covered by any Shelf Registration are to be
sold in an underwritten offering, the investment banker or investment bankers and manager or managers that will administer the offering (“Managing Underwriters”) will be selected by the Holders of a majority in aggregate principal
amount of such Transfer Restricted Securities to be included in such offering and shall be reasonably acceptable to the Company. 
 No person may participate in any underwritten registration hereunder unless such person (i) agrees to sell such person’s Transfer Restricted Securities on the basis reasonably provided in any
underwriting arrangements approved by the persons entitled hereunder to approve such arrangements and (ii) completes and executes all questionnaires, powers of attorney, indemnities, underwriting agreements and other documents reasonably
required under the terms of such underwriting arrangements. 
 9. Miscellaneous. 

(a) Amendments and Waivers. The provisions of this Agreement may not be amended, modified or supplemented, and waivers
or consents to departures from the provisions hereof may not be given, except by the Company and the written consent of the Holders of a majority in principal amount of the Transfer Restricted Securities affected by such amendment, modification,
supplement, waiver or consents. 
 (b) Notices. All notices and other communications provided for or permitted
hereunder shall be made in writing by hand delivery, first-class mail, facsimile transmission, or air courier which guarantees overnight delivery: 
 (1) if to a Holder of the Securities, at the most current address given by such Holder to the Company. 
 (2) if to the Purchasers; 
 Credit Suisse Securities (USA) LLC 

Eleven Madison Avenue 
 New York, NY 10010-3629 
 Fax No.: (212) 325-4296 

Attention: Transactions Advisory Group 

  
 12 









 with a copy (which shall not constitute notice) to: 

Latham & Watkins LLP 
 811 Main Street, Suite 3700 
 Houston, TX 77002 

Attention: Sean T. Wheeler 
 (3) if to the Company or any Guarantor: 
 CST Brands, Inc. 

One Valero Way, Building D, Suite 200 
 San Antonio, Texas 78249 
 Attention: Investor Relations 

with a copy to: 

Baker Botts L.L.P. 
 910 Louisiana Street 
 Houston, TX 77002 

Attention: Gerald M. Spedale 
 All such notices and communications shall be deemed to have been duly given: at the time delivered by hand, if personally delivered; three business days after being deposited in the mail, postage prepaid,
if mailed; when receipt is acknowledged by recipient’s facsimile machine operator, if sent by facsimile transmission; and on the day delivered, if sent by overnight air courier guaranteeing next day delivery. 

(c) No Inconsistent Agreements. The Company has not, as of the date hereof, entered into, nor shall it, on or after the
date hereof, enter into, any agreement with respect to its securities that is inconsistent with the rights granted to the Holders herein or otherwise conflicts with the provisions hereof. 

(d) Successors and Assigns. This Agreement shall be binding upon the each of the parties hereto and its successors and
assigns. 
 (e) Counterparts. This Agreement may be executed in any number of counterparts and by the parties
hereto in separate counterparts, each of which when so executed shall be deemed to be an original and all of which taken together shall constitute one and the same agreement. 
 (f) Headings. The headings in this Agreement are for convenience of reference only and shall not limit or otherwise affect the meaning hereof. 

(g) Governing Law. THIS AGREEMENT SHALL BE GOVERNED BY, AND CONSTRUED IN ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW
YORK WITHOUT REGARD TO PRINCIPLES OF CONFLICTS OF LAWS. 
 (h) Severability. If any one or more of the
provisions contained herein, or the application thereof in any circumstance, is held invalid, illegal or unenforceable, the validity, legality and enforceability of any such provision in every other respect and of the remaining provisions contained
herein shall not be affected or impaired thereby. 
 (i) Securities Held by the Company. Whenever the consent
or approval of Holders of a specified percentage of principal amount of Securities is required hereunder, Securities held by the Company or its affiliates (other than subsequent Holders of Securities if such subsequent Holders are deemed to be
affiliates solely by reason of their holdings of such Securities) shall not be counted in determining whether such consent or approval was given by the Holders of such required percentage. 

[Signature pages follow.] 

  
 13 









 If the foregoing is in accordance with your understanding of our agreement, please sign and
return to the Issuer a counterpart hereof, whereupon this instrument, along with all counterparts, will become a binding agreement among the several Purchasers, the Issuer and the Guarantors in accordance with its terms. 

 

					
	Very truly yours,
	
	CST BRANDS, INC.
		
	By:	 	 /s/ Clayton E. Killinger

		 	Clayton E. Killinger
		 	Senior Vice President and Chief Financial Officer
	
	CST DIAMOND, L.P.
		
	By:	 	Emerald Marketing, Inc., its General Partner
			
		 	By:	 	 /s/ Clayton E. Killinger

		 		 	Clayton E. Killinger
		 		 	Senior Vice President and Chief Financial Officer
	
	CST SECURITY SERVICES, INC.
		
	By:	 	 /s/ Clayton E. Killinger

		 	Clayton E. Killinger
		 	Senior Vice President and Treasurer



  

Signature Page 
 Registration Rights Agreement 








 
			
	AUTOTRONIC SYSTEMS, INC.
	
	BIG DIAMOND, LLC
	
	BIG DIAMOND NUMBER 1, LLC
	
	CST ARKANSAS STATIONS, LLC
	
	CST CALIFORNIA STATIONS, INC.
	
	CST MARKETING AND SUPPLY COMPANY
	
	CST SERVICES LLC
	
	CST USA INC.
	
	DIAMOND SHAMROCK ARIZONA, INC.
	
	DIAMOND SHAMROCK STATIONS, INC.
	
	EMERALD MARKETING, INC.
	
	NATIONAL CONVENIENCE STORES INCORPORATED
	
	SIGMOR BEVERAGE, INC.
	
	SIGMOR COMPANY, LLC
		
	By:	 	 /s/ Clayton E. Killinger

		 	Clayton E. Killinger
		 	Senior Vice President and Chief Financial Officer



  

Signature Page 
 Registration Rights Agreement 








 
			
	SIGMOR NUMBER 5, INC.
	
	SIGMOR NUMBER 43, INC.
	
	SIGMOR NUMBER 79, INC.
	
	SIGMOR NUMBER 80, INC.
	
	SIGMOR NUMBER 103, INC.
	
	SIGMOR NUMBER 105, INC.
	
	SIGMOR NUMBER 119, INC.
	
	SIGMOR NUMBER 178, INC.
	
	SIGMOR NUMBER 196, INC.
	
	SIGMOR NUMBER 238, INC.
	
	SIGMOR NUMBER 259, INC.
	
	SIGMOR NUMBER 422, INC.
	
	SKIPPER BEVERAGE COMPANY, LLC
	
	SUNSHINE BEVERAGE CO.
	
	TOC-DS COMPANY
	
	CST METRO LLC
	
	VALLEY SHAMROCK, INC.
	
	VRG DIAMOND HOLDINGS, LLC
		
	By:	 	 /s/ Clayton E. Killinger

		 	Clayton E. Killinger
		 	Senior Vice President and Chief Financial Officer



  

Signature Page 
 Registration Rights Agreement 









			
	The foregoing Registration Rights Agreement is hereby confirmed and accepted as of the date first above written.
	
	 Acting on behalf of themselves and as the Representatives of the several Purchasers

	
	 BY CREDIT SUISSE SECURITIES (USA) LLC
 Acting in its capacity as Original Purchaser,
 Representative and Purchaser

		
	By:	 	 /s/ Ali R. Mehdi

	Name:	 	Ali R. Mehdi
	Title:	 	Managing Director
	
	BY WELLS FARGO SECURITIES, LLC
		
	By:	 	 /s/ Lewis S. Morris, III

	Name:	 	Lewis S. Morris, III
	Title:	 	Managing Director
	
	BY J.P.MORGAN SECURITIES LLC
		
	By:	 	 /s/ Jack D. Smith

	Name:	 	Jack D. Smith
	Title:	 	Managing Director
	
	BY MITSUBISHI UFJ SECURITIES (USA), INC.
		
	By:	 	 /s/ Brian Cogliandro

	Name:	 	Brian Cogliandro
	Title:	 	Managing Director
	
	BY RBC CAPITAL MARKETS, LLC
		
	By:	 	 /s/ James S. Wolfe

	Name:	 	James S. Wolfe
	Title:	 	Managing Director
	
	BY RBS SECURITIES INC.
		
	By:	 	 /s/ Stephen A. Brinkmann

	Name:	 	Stephen A. Brinkmann
	Title:	 	Vice President


  

Signature Page 
 Registration Rights Agreement 








 ANNEX A 
 Guarantors 
  

	•	 	 AUTOTRONIC SYSTEMS, INC. 


  

	•	 	 BIG DIAMOND, LLC 


  

	•	 	 BIG DIAMOND NUMBER 1, LLC 


  

	•	 	 CST ARKANSAS STATIONS, LLC 


  

	•	 	 CST CALIFORNIA STATIONS, INC. 


  

	•	 	 CST DIAMOND, L.P. 


  

	•	 	 CST MARKETING AND SUPPLY COMPANY 


  

	•	 	 CST SECURITY SERVICES, INC. 


  

	•	 	 CST SERVICES LLC 


  

	•	 	 CST USA INC. 


  

	•	 	 DIAMOND SHAMROCK ARIZONA, INC. 


  

	•	 	 DIAMOND SHAMROCK STATIONS, INC. 


  

	•	 	 EMERALD MARKETING, INC. 


  

	•	 	 NATIONAL CONVENIENCE STORES INCORPORATED 


  

	•	 	 SIGMOR BEVERAGE, INC. 


  

	•	 	 SIGMOR COMPANY, LLC 


  

	•	 	 SIGMOR NUMBER 5, INC. 


  

	•	 	 SIGMOR NUMBER 43, INC. 


  

	•	 	 SIGMOR NUMBER 79, INC. 


  

	•	 	 SIGMOR NUMBER 80, INC. 


  

	•	 	 SIGMOR NUMBER 103, INC. 


  

	•	 	 SIGMOR NUMBER 105, INC. 


  

	•	 	 SIGMOR NUMBER 119, INC. 


  

	•	 	 SIGMOR NUMBER 178, INC. 


  

	•	 	 SIGMOR NUMBER 196, INC. 


  

	•	 	 SIGMOR NUMBER 238, INC. 


  

	•	 	 SIGMOR NUMBER 259, INC. 


  

	•	 	 SIGMOR NUMBER 422, INC. 


  

	•	 	 SKIPPER BEVERAGE COMPANY, LLC 


  

	•	 	 SUNSHINE BEVERAGE CO. 


  

	•	 	 TOC-DS COMPANY 


  

	•	 	 CST METRO LLC 


  

	•	 	 VALLEY SHAMROCK, INC. 


  

	•	 	 VRG DIAMOND HOLDINGS, LLC 



  
 A-1









 ANNEX B 
 Each broker-dealer that receives Exchange Securities for its own account pursuant to the Exchange Offer must acknowledge that it will deliver a prospectus in connection with any resale of such Exchange
Securities. The Letter of Transmittal states that by so acknowledging and by delivering a prospectus, a broker-dealer will not be deemed to admit that it is an “underwriter” within the meaning of the Securities Act. This Prospectus, as it
may be amended or supplemented from time to time, may be used by a broker-dealer in connection with resales of Exchange Securities received in exchange for Initial Securities where such Initial Securities were acquired by such broker-dealer as a
result of market-making activities or other trading activities. The Company has agreed that, for a period of 180 days after the Expiration Date (as defined herein), it will make this Prospectus available to any broker-dealer for use in connection
with any such resale. See “Plan of Distribution.” 

  
 B-1









 ANNEX C 
 Each broker-dealer that receives Exchange Securities for its own account in exchange for Securities, where such Initial Securities were acquired by such broker-dealer as a result of market-making
activities or other trading activities, must acknowledge that it will deliver a prospectus in connection with any resale of such Exchange Securities. See “Plan of Distribution.” 

  
 C-1









 ANNEX D 
 PLAN OF DISTRIBUTION 
 Each broker-dealer that receives
Exchange Securities for its own account pursuant to the Exchange Offer must acknowledge that it will deliver a prospectus in connection with any resale of such Exchange Securities. This Prospectus, as it may be amended or supplemented from time to
time, may be used by a broker-dealer in connection with resales of Exchange Securities received in exchange for Initial Securities where such Initial Securities were acquired as a result of market-making activities or other trading activities. The
Company has agreed that, for a period of 180 days after the Expiration Date, it will make this prospectus, as amended or supplemented, available to any broker-dealer for use in connection with any such resale. In addition, until
            , 201  , all dealers effecting transactions in the Exchange Securities may be required to deliver a
prospectus.(1) 
 The Company will not receive any proceeds from any sale of Exchange Securities by broker-dealers. Exchange Securities received by broker-dealers for their own account pursuant to the Exchange Offer may be
sold from time to time in one or more transactions in the over-the-counter market, in negotiated transactions, through the writing of options on the Exchange Securities or a combination of such methods of resale, at market prices prevailing at the
time of resale, at prices related to such prevailing market prices or negotiated prices. Any such resale may be made directly to purchasers or to or through brokers or dealers who may receive compensation in the form of commissions or concessions
from any such broker-dealer or the purchasers of any such Exchange Securities. Any broker-dealer that resells Exchange Securities that were received by it for its own account pursuant to the Exchange Offer and any broker or dealer that participates
in a distribution of such Exchange Securities may be deemed to be an “underwriter” within the meaning of the Securities Act and any profit on any such resale of Exchange Securities and any commission or concessions received by any such
persons may be deemed to be underwriting compensation under the Securities Act. The Letter of Transmittal states that, by acknowledging that it will deliver and by delivering a prospectus, a broker-dealer will not be deemed to admit that it is an
“underwriter” within the meaning of the Securities Act. 
 For a period of 180 days after the Expiration Date the
Company will promptly send additional copies of this Prospectus and any amendment or supplement to this Prospectus to any broker-dealer that requests such documents in the Letter of Transmittal. The Company has agreed to pay all expenses incident to
the Exchange Offer (including the expenses of one counsel for the Holders of the Securities) other than commissions or concessions of any brokers or dealers and will indemnify the Holders of the Securities (including any broker-dealers) against
certain liabilities, including liabilities under the Securities Act. 
  

	(1) 	 In addition, the legend required by Item 502(e) of Regulation S-K will appear on the back cover page of the Exchange Offer prospectus.




  
 D-1









 ANNEX E 
  ̈ CHECK HERE IF YOU ARE A BROKER-DEALER AND WISH TO RECEIVE 10 ADDITIONAL COPIES OF THE PROSPECTUS AND 10 COPIES OF ANY AMENDMENTS OR SUPPLEMENTS THERETO.

  

							
		 	Name:	 	  
	 	
		 	Address:	 	  
	 	
		 		 	  
	 	

 If the undersigned is not a broker-dealer, the undersigned represents that it is not engaged in, and does not intend to
engage in, a distribution of Exchange Securities. If the undersigned is a broker-dealer that will receive Exchange Securities for its own account in exchange for Initial Securities that were acquired as a result of market-making activities or other
trading activities, it acknowledges that it will deliver a prospectus in connection with any resale of such Exchange Securities; however, by so acknowledging and by delivering a prospectus, the undersigned will not be deemed to admit that it is an
“underwriter” within the meaning of the Securities Act. 

  
 E-1