Document:

EX-10.4

 Exhibit 10.4 

 
  
 SECURITY AGREEMENT 
 dated as of 

January 30, 2012 

among 
 THE
GRANTORS IDENTIFIED HEREIN 
 and 
 BANK OF AMERICA, N.A., 
 as Collateral Agent 

 
  

 TABLE OF CONTENTS 

 

							
	 	 	 	  	Page	 
		 	ARTICLE I	  			
			
		 	DEFINITIONS	  			
			
	Section 1.01	 	Credit Agreement	  	 	1	  
	Section 1.02	 	Other Defined Terms	  	 	1	  
			
		 	ARTICLE II	  			
			
		 	PLEDGE OF SECURITIES	  			
			
	Section 2.01	 	Pledge	  	 	5	  
	Section 2.02	 	Delivery of the Pledged Securities	  	 	6	  
	Section 2.03	 	Representations, Warranties and Covenants	  	 	6	  
	Section 2.04	 	Certification of Limited Liability Company and Limited Partnership Interests	  	 	8	  
	Section 2.05	 	Registration in Nominee Name; Denominations	  	 	8	  
	Section 2.06	 	Voting Rights; Dividends and Interest	  	 	8	  
			
		 	ARTICLE III	  			
			
		 	SECURITY INTERESTS IN PERSONAL PROPERTY	  			
			
	Section 3.01	 	Security Interest	  	 	10	  
	Section 3.02	 	Representations and Warranties	  	 	12	  
	Section 3.03	 	Covenants	  	 	13	  
			
		 	ARTICLE IV	  			
			
		 	REMEDIES	  			
			
	Section 4.01	 	Remedies Upon Default	  	 	15	  
	Section 4.02	 	Application of Proceeds	  	 	16	  
	Section 4.03	 	Grant of License to Use Intellectual Property	  	 	17	  
			
		 	ARTICLE V	  			
			
		 	SUBORDINATION	  			
			
	Section 5.01	 	Subordination	  	 	17	  

							
		 	ARTICLE VI	  			
			
		 	MISCELLANEOUS	  			
			
	Section 6.01	 	Notices	  	 	18	  
	Section 6.02	 	Waivers; Amendment	  	 	18	  
	Section 6.03	 	Collateral Agent’s Fees and Expenses; Indemnification	  	 	18	  
	Section 6.04	 	Successors and Assigns	  	 	18	  
	Section 6.05	 	Survival of Agreement	  	 	19	  
	Section 6.06	 	Counterparts; Effectiveness; Several Agreement	  	 	19	  
	Section 6.07	 	Severability	  	 	19	  
	Section 6.08	 	Right of Set-Off	  	 	19	  
	Section 6.09	 	Governing Law; Jurisdiction; Venue; Waiver of Jury Trial; Consent to Service of Process	  	 	20	  
	Section 6.10	 	Headings	  	 	20	  
	Section 6.11	 	Security Interest Absolute	  	 	20	  
	Section 6.12	 	Termination or Release	  	 	20	  
	Section 6.13	 	Additional Grantors	  	 	21	  
	Section 6.14	 	Collateral Agent Appointed Attorney-in-Fact	  	 	21	  
	Section 6.15	 	General Authority of the Collateral Agent	  	 	22	  
	Section 6.16	 	Reasonable Care	  	 	22	  
	Section 6.17	 	Delegation; Limitation	  	 	22	  
	Section 6.18	 	Reinstatement	  	 	22	  
	Section 6.19	 	Miscellaneous	  	 	23	  

Schedule I Subsidiary Parties 
 Schedule II
Pledged Equity and Pledged Debt 
 Schedule III Commercial Tort Claims 
 Exhibits 
  

			
	Exhibit I	  	Form of Security Agreement Supplement
	Exhibit II	  	Form of Perfection Certificate
	Exhibit III	  	Form of Patent Security Agreement
	Exhibit IV	  	Form of Trademark Security Agreement
	Exhibit V	  	Form of Copyright Security Agreement

  
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 SECURITY AGREEMENT dated as of January 30, 2012, among the Grantors (as defined below)
and Bank of America, N.A., as Collateral Agent for the Secured Parties (in such capacity, the “Collateral Agent”). 
 Reference is made to the Credit Agreement dated as of January 30, 2012 (as amended, amended and restated, supplemented or otherwise modified from time to time, the “Credit
Agreement”), among Summit Materials, LLC, a Delaware limited liability company (the “Borrower”), certain other Guarantors from time to time party thereto, Bank of America, N.A., as Administrative Agent and Collateral Agent,
each lender from time to time party thereto (collectively, the “Lenders” and individually, a “Lender”), Bank of America, N.A., as L/C Issuer and Swing Line Lender, and the other agents named therein. The Lenders
have agreed to extend credit to the Borrower subject to the terms and conditions set forth in the Credit Agreement. The obligations of the Lenders to extend such credit are conditioned upon, among other things, the execution and delivery of this
Agreement. Holdings and the Subsidiary Parties are affiliates of the Borrower, will derive substantial benefits from the extension of credit to the Borrower pursuant to the Credit Agreement, and are willing to execute and deliver this Agreement in
order to induce the Lenders to extend such credit. Accordingly, the parties hereto agree as follows: 
 ARTICLE I

 Definitions 
 Section 1.01 Credit Agreement. 
 (a) Capitalized terms used in this
Agreement and not otherwise defined herein have the meanings specified in the Credit Agreement. All terms defined in the UCC (as defined herein) and not defined in this Agreement have the meanings specified therein; the term “instrument”
shall have the meaning specified in Article 9 of the UCC. 
 (b) The rules of construction specified in Article I of the Credit
Agreement also apply to this Agreement. 
 Section 1.02 Other Defined Terms. As used in this Agreement, the
following terms have the meanings specified below: 
 “Account Debtor” means any Person who is or who may
become obligated to any Grantor under, with respect to or on account of an Account. 
 “Accounts” has the
meaning specified in Article 9 of the UCC. 
 “Agreement” means this Security Agreement. 

“Article 9 Collateral” has the meaning assigned to such term in Section 3.01(a). 

“Borrower” has the meaning assigned to such term in the recitals of this Agreement. 

“Collateral” means the Article 9 Collateral and the Pledged Collateral. 

“Collateral Agent” has the meaning assigned to such term in the recitals of the Agreement. 

 “Commercial Tort Claims” has the meaning specified in Article 9 of the
UCC. 
 “Copyright License” means any written agreement, now or hereafter in effect, granting any right to any
third party under any Copyright now owned or hereafter acquired by any Grantor or that such Grantor otherwise has the right to license, or granting any right to any Grantor under any Copyright now owned or hereafter acquired by any third party, and
all rights of such Grantor under any such agreement. 
 “Copyrights” means all of the following now owned or
hereafter acquired by any Person: (a) all copyright rights in any work subject to the copyright laws of the United States, whether as author, assignee, transferee or otherwise, and (b) all registrations and applications for registration of
any such copyright in the United States, including registrations and pending applications for registration in the USCO. 

“Credit Agreement” has the meaning assigned to such term in the preliminary statement of this Agreement. 

“Excluded Assets” means: 
 (a) any General Intangible, Investment Property, Intellectual Property or rights of a Grantor with respect to any contract, lease, license or other agreement if (but only to the extent that) the grant of
a security interest therein would (x) constitute a violation (including a breach or default) of, a restriction in respect of, or result in the abandonment, invalidation or unenforceability of, such General Intangible, Investment Property,
Intellectual Property or rights in favor of a third party or in conflict with any law, regulation, permit, order or decree of any Governmental Authority, unless and until all required consents shall have been obtained (for the avoidance of doubt,
the restrictions described herein shall not include negative pledges or similar undertakings in favor of a lender or other financial counterparty) or (y) expressly give any other party (other than another Grantor or its Affiliates) in respect
of any such contract, lease, license or other agreement, the right to terminate its obligations thereunder, provided, however, that the limitation set forth in this clause (a) shall not affect, limit, restrict or impair the grant
by a Grantor of a security interest pursuant to this Agreement in any such Collateral to the extent that an otherwise applicable prohibition or restriction on such grant is rendered ineffective by any applicable Law, including the UCC;
provided, further, that, at such time as the condition causing the conditions in subclauses (x) and (y) of this clause (a) shall be remedied, whether by contract, change of law or otherwise, the contract, lease, instrument,
license or other documents shall immediately cease to be an Excluded Asset, and any security interest that would otherwise be granted herein shall attach immediately to such contract, lease, instrument, license or other agreement, or to the extent
severable, to any portion thereof that does not result in any of the conditions in subclauses (x) or (y) above; 
 (b)
any assets to the extent and for so long as (i) the pledge of or security interest in such assets is prohibited by law and such prohibition is not overridden by the UCC or other applicable law or (ii) the grant of such security interest
would require governmental consent, approval, license or authorization (except that the cash Proceeds of dispositions thereof in accordance with applicable law, including, without limitation, rules and regulations of any governmental authority or
agency shall not be an Excluded Asset); 
 (c) motor vehicles and other assets subject to certificates of title, letters of
credit with a face value of less than $5,000,000 and commercial tort claims where the amount of damages claimed by the applicable Grantor is less than $5,000,000, the perfection of a security interest in which cannot be perfected through the filing
of financing statements under the UCC in the relevant jurisdiction; 

  
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 (d) Margin Stock; 
 (e) Excluded Security; 
 (f) any Intellectual Property to the extent that the
attachment of the security interest of this Agreement thereto, or any assignment thereof, would result in the forfeiture, cancellation, invalidation, unenforceability, or other loss of the Grantors’ rights in such property including, without
limitation, any License pursuant to which Grantor is licensee under terms which prohibit the granting of a security interest or under which granting such an interest would give rise to a breach or default by Grantor, and any Trademark applications
filed in the USPTO on the basis of such Grantor’s “intent-to-use” such Trademark, unless and until acceptable evidence of use of such Trademark has been filed with and accepted by the USPTO pursuant to Section 1(c) or
Section 1(d) of the Lanham Act (15 U.S.C. 1051, et seq.), to the extent that granting a lien in such Trademark application prior to such filing would adversely affect the enforceability, validity, or other rights in such Trademark application;

 (g) assets (including Equity Interests) owned by any Grantor on the date hereof or hereafter acquired that are subject to
(A) a Lien of the type described in Section 7.01 (u), (w) and (aa) (to the extent relating to Liens originally incurred pursuant to Section 7.01(u) or (w)) of the Credit Agreement that is permitted to be incurred pursuant to the
provisions of the Credit Agreement or (B) a contract or agreement permitted under clauses (i) or (xii) of the proviso to Section 7.09 of the Credit Agreement, in each case, if and to the extent that the contract or other
agreement pursuant to which such Lien is granted or to which such assets are subject (or the documentation relating thereto) prohibits the creation of any other Lien on such asset; 

(h) any particular assets if, in the reasonable judgment of the Borrower evidenced in writing and with the consent of the Administrative
Agent (not to be unreasonably withheld or delayed), creating a pledge thereof or security interest therein to the Collateral Agent for the benefit of the Secured Parties would result in any material adverse tax consequences to the Borrower or its
Subsidiaries; and 
 (i) any particular assets if, in the reasonable judgment of the Administrative Agent, determined in
consultation with the Borrower and evidenced in writing, the burden, cost or consequence (including any material adverse tax consequences) to the Borrower or its Subsidiaries of creating or perfecting such pledges or security interests in such
assets in favor of the Collateral Agent for the benefit of the Secured Parties is excessive in relation to the benefits to be obtained therefrom by the Secured Parties. 
 “Excluded Security” means 
 (a) more than 65% of the issued and
outstanding Equity Interests of any Foreign Subsidiary; 
 (b) more than 65% of the issued and outstanding Equity Interests of
any Domestic Subsidiary that is a disregarded entity under the Code if substantially all of its assets consist of the Equity Interests of one or more Subsidiaries that are controlled foreign corporations within the meaning of Section 957 of the
Code; 
 (c) any interest in a joint venture or Excluded Subsidiary to the extent the granting of a security interest therein is
prohibited by the terms of the Organizational Documents of such joint venture or Excluded Subsidiary; 
 (d) any Equity Interest
of any Subsidiary the pledge of which is prohibited by applicable Law or by agreements permitted under the Credit Agreement containing anti-assignment clauses to the extent not over-ridden by the UCC or the pledge of which would require governmental
(including regulatory) consent, approval, license or authorization; 

  
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 (e) any Equity Interest of any not-for-profit Subsidiaries; and 

(f) any Equity Interest of any special purpose securitization vehicle or a captive insurance subsidiary. 

“General Intangibles” has the meaning specified in Article 9 of the UCC. 

“Grantor” means the Borrower, each Subsidiary Guarantor that is a party hereto, and each Subsidiary Guarantor that is a
Domestic Subsidiary that becomes a party to this Agreement after the Closing Date. 
 “Immaterial Subsidiary”
means any Subsidiary that does not have total assets or annual revenues in excess of 5.0% of Consolidated Total Assets of the Borrower and its Subsidiaries individually or in the aggregate with all other Immaterial Subsidiaries. 

“Intellectual Property” means all intellectual property now owned or hereafter acquired by any Person, including
inventions, designs, Patents, Copyrights, Trademarks, trade secrets, the intellectual property rights in software and databases and related documentation, and all additions and improvements to the foregoing. 

“Intellectual Property Security Agreements” means the short-form Patent Security Agreement, short-form Trademark
Security Agreement, and short-form Copyright Security Agreement, each substantially in the form attached hereto as Exhibits III, IV and V, respectively. 
 “License” means any Patent License, Trademark License, Copyright License or other Intellectual Property license or sublicense agreement to which any Grantor is a party, together with any
and all (i) renewals, extensions, supplements and continuations thereof, (ii) income, fees, royalties, damages, claims and payments now and hereafter due and/or payable thereunder or with respect thereto including damages and payments for
past, present or future infringements or violations thereof, and (iii) rights to sue for past, present and future violations thereof. 
 “Patent License” means any written agreement, now or hereafter in effect, granting to any third party any right to make, use or sell any invention on which a Patent, now owned or
hereafter acquired by any Grantor or that any Grantor otherwise has the right to license, is in existence, or granting to any Grantor any right to make, use or sell any invention on which a Patent, now owned or hereafter acquired by any third party,
is in existence, and all rights of any Grantor under any such agreement. 
 “Patents” means all of the
following now owned or hereafter acquired by any Person: (a) all letters Patent of the United States in or to which any Grantor now or hereafter has any right, title or interest therein, all registrations thereof, and all applications for
letters Patent of the United States, including registrations and pending applications in the USPTO, and (b) all reissues, continuations, divisions, continuations-in-part, renewals or extensions thereof, and the inventions disclosed or claimed
therein, including the right to make, use and/or sell the inventions disclosed or claimed therein. 
 “Perfection
Certificate” means a certificate substantially in the form of Exhibit II, completed and supplemented with the schedules and attachments contemplated thereby, and duly executed by a Responsible Officer of the Borrower. 

  
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 “Pledged Collateral” has the meaning assigned to such term in
Section 2.01. 
 “Pledged Debt” has the meaning assigned to such term in Section 2.01. 

“Pledged Equity” has the meaning assigned to such term in Section 2.01. 

“Pledged Securities” means the Pledged Equity and Pledged Debt. 

“Secured Obligations” means the “Obligations” (as defined in the Credit Agreement). 

“Security Agreement Supplement” means an instrument substantially in the form of Exhibit I hereto. 

“Security Interest” has the meaning assigned to such term in Section 3.01. 

“Subsidiary Parties” means (a) the Subsidiaries identified on Schedule I and (b) each other Subsidiary that
becomes a party to this Agreement as a Subsidiary Party after the Closing Date. 
 “Trademark License” means
any written agreement, now or hereafter in effect, granting to any third party any right to use any trademark now or hereafter owned by any Grantor or that any Grantor otherwise has the right to license, or granting to any Grantor any right to use
any trademark now or hereafter owned by any third party, and all rights of any Grantor under any such agreement. 

“Trademarks” means all of the following now owned or hereafter acquired by any Person: (a) all trademarks, service
marks, trade names, corporate names, trade dress, logos, designs, fictitious business names other source or business identifiers, now owned or hereafter acquired, all registrations and recordings thereof, and all registration and recording
applications filed in connection therewith, including registrations and registration applications in the USPTO or any similar offices in any State of the United States or any jurisdiction thereof, and all extensions or renewals thereof, and
(b) all goodwill associated therewith. 
 “UCC” means the Uniform Commercial Code as the same may from
time to time be in effect in the State of New York or the Uniform Commercial Code (or similar code or statute) of another jurisdiction, to the extent it may be required to apply to any item or items of Collateral. 

“USCO” means the United States Copyright Office. 

“USPTO” means the United States Patent and Trademark Office. 

ARTICLE II 
 Pledge of Securities 
 Section 2.01 Pledge. As security
for the payment or performance, as the case may be, in full of the Secured Obligations, including the Guarantees, each of the Grantors hereby assigns and pledges to the Collateral Agent, its successors and assigns, for the benefit of the Secured
Parties, and hereby grants to the Collateral Agent, its successors and assigns, for the benefit of the Secured Parties, a security interest in all of such Grantors’ right, title and interest in, to and under 

(i) all Equity Interests held by it that are listed on Schedule II and any other Equity Interests obtained in the
future by such Grantor and the certificates representing all such Equity 

  
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Interests (the “Pledged Equity”) of (x) any Subsidiary that is not an Excluded Subsidiary and (y) Excluded Subsidiaries to the extent permitted by the terms of the
Organizational Documents of such Excluded Subsidiaries; provided that the Pledged Equity shall not include (a) Excluded Assets and (b) the Equity Interests of an Immaterial Subsidiary; 

(ii) (A) the debt securities owned by it and listed opposite the name of such Grantor on Schedule II, (B) any
debt securities obtained in the future by such Grantor and (C) the promissory notes and any other instruments evidencing such debt securities (the “Pledged Debt”); provided that the Pledged Debt shall not include any
Excluded Assets; 
 (iii) all other property that may be delivered to and held by the Collateral Agent pursuant
to the terms of this Section 2.01; 
 (iv) subject to Section 2.06, all payments of principal or
interest, dividends, cash, instruments and other property from time to time received, receivable or otherwise distributed in respect of, in exchange for or upon the conversion of, and all other Proceeds received in respect of, the securities
referred to in clauses (i) and (ii) above; 
 (v) subject to Section 2.06, all rights and
privileges of such Grantor with respect to the securities and other property referred to in clauses (i), (ii), (iii) and (iv) above; and 
 (vi) all Proceeds of any of the foregoing (the items referred to in clauses (i) through (v) above being collectively referred to as the “Pledged Collateral”). 

TO HAVE AND TO HOLD the Pledged Collateral, together with all right, title, interest, powers, privileges and preferences pertaining or incidental
thereto, unto the Collateral Agent, its successors and assigns, for the benefit of the Secured Parties, forever, subject, however, to the terms, covenants and conditions hereinafter set forth. 

Section 2.02 Delivery of the Pledged Securities. 
 (a) Each Grantor agrees promptly (but in any event within 30 days after receipt by such Grantor) to deliver or cause to be delivered to the Collateral Agent, for the benefit of the Secured Parties, any
and all (i) Pledged Equity to the extent certificated and (ii) to the extent required to be delivered pursuant to paragraph (b) of this Section 2.02, Pledged Debt. 

(b) Each Grantor will cause any Indebtedness for borrowed money having an aggregate principal amount in excess of $2,500,000 owed to such
Grantor by any Person that is evidenced by a duly executed promissory note to be pledged and delivered to the Collateral Agent, for the benefit of the Secured Parties, pursuant to the terms hereof. 

(c) Upon delivery to the Collateral Agent, any Pledged Securities shall be accompanied by stock or security powers duly executed in blank
or other instruments of transfer reasonably satisfactory to the Collateral Agent and by such other instruments and documents as the Collateral Agent may reasonably request. Each delivery of Pledged Securities shall be accompanied by a schedule
describing the securities, which schedule shall be deemed to supplement Schedule II and made a part hereof; provided that failure to supplement Schedule II shall not affect the validity of such pledge of such Pledged Security.
Each schedule so delivered shall supplement any prior schedules so delivered. 
 Section 2.03 Representations,
Warranties and Covenants. Each Grantor represents, warrants and covenants to and with the Collateral Agent, for the benefit of the Secured Parties, that: 
 (a) As of the date hereof, Schedule II includes all Equity Interests, debt securities and promissory notes required to be pledged by such Grantor hereunder in order to satisfy the Collateral and
Guarantee Requirement; 

  
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 (b) the Pledged Equity issued by the Borrower or a Subsidiary have been duly and validly
authorized and issued by the issuers thereof and are fully paid and nonassessable; 
 (c) except for the security interests
granted hereunder, such Grantor (i) is, subject to any transfers made in compliance with the Credit Agreement, the direct owner, beneficially and of record, of the Pledged Equity indicated on Schedule II, (ii) holds the same free and clear
of all Liens, other than Liens created by the Collateral Documents or permitted pursuant to Section 7.01 of the Credit Agreement, and (iii) if requested by the Collateral Agent, will defend its title or interest thereto or therein against
any and all Liens (other than the Liens permitted pursuant to this Section 2.03(c)), however arising, of all Persons whomsoever; 
 (d) except for restrictions and limitations (i) imposed or permitted by the Loan Documents or securities laws generally or (ii) described in the Perfection Certificate, the Pledged Collateral is
freely transferable and assignable, and none of the Pledged Collateral is subject to any option, right of first refusal, shareholders agreement, charter or by-law provisions or contractual restriction of any nature that might prohibit, impair, delay
or otherwise affect in any manner material and adverse to the Secured Parties the pledge of such Pledged Collateral hereunder, the sale or disposition thereof pursuant hereto or the exercise by the Collateral Agent of rights and remedies hereunder;

 (e) the execution and performance by the Grantors of this Agreement are within each Grantor’s corporate, limited
liability or limited partnership powers and have been duly authorized by all necessary corporate, limited liability or limited partnership action or other organizational action; 

(f) no consent or approval of any Governmental Authority, any securities exchange or any other Person was or is necessary to the validity
of the pledge effected hereby, except for (i) filings and registrations necessary to perfect the Liens on the Collateral granted by the Loan Parties in favor of the Secured Parties and (ii) the approvals, consents, exemptions,
authorizations, actions, notices and filings which have been duly obtained, taken, given or made and are in full force and effect (except to the extent not required to be obtained, taken, given, or made or to be in full force and effect pursuant to
the Collateral and Guarantee Requirement); 
 (g) by virtue of the execution and delivery by each Grantor of this Agreement, and
delivery of the Pledged Securities to and continued possession by the Collateral Agent in the State of New York, the Collateral Agent for the benefit of the Secured Parties has a legal, valid and perfected lien upon and security interest in such
Pledged Security as security for the payment and performance of the Secured Obligations to the extent such perfection is governed by the UCC; and 
 (h) the pledge effected hereby is effective to vest in the Collateral Agent, for the benefit of the Secured Parties, the rights of the Collateral Agent in the Pledged Collateral to the extent intended
hereby. 
 Subject to the terms of this Agreement and to the extent permitted by Applicable Law, each Grantor hereby agrees that
upon the occurrence and during the continuance of an Event of Default, it will comply with instructions of the Collateral Agent with respect to the Equity Interests in such Grantor that constitute Pledged Equity hereunder that are not certificated
without further consent by the applicable owner or holder of such Equity Interests. 

  
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 Notwithstanding anything to the contrary in this Agreement, to the extent any provision of
this Agreement or the Credit Agreement excludes any assets from the scope of the Pledged Collateral, or from any requirement to take any action to perfect any security interest in favor of the Collateral Agent in the Pledged Collateral (including
the Equity Interests of Immaterial Subsidiaries), the representations, warranties and covenants made by any relevant Grantor in this Agreement with respect to the creation, perfection or priority (as applicable) of the security interest granted in
favor of the Collateral Agent (including, without limitation, this Section 2.03) shall be deemed not to apply to such excluded assets. 
 Section 2.04 Certification of Limited Liability Company and Limited Partnership Interests. No interest in any limited liability company or limited partnership controlled by any Grantor that
constitutes Pledged Equity shall be represented by a certificate unless (i) the limited liability company agreement or partnership agreement expressly provides that such interests shall be a “security” within the meaning of Article 8
of the UCC of the applicable jurisdiction, and (ii) such certificate shall be delivered to the Collateral Agent in accordance with Section 2.02. Any limited liability company and any limited partnership controlled by any Grantor shall
either (a) not include in its operative documents any provision that any Equity Interests in such limited liability company or such limited partnership be a “security” as defined under Article 8 of the Uniform Commercial Code or
(b) certificate any Equity Interests in any such limited liability company or such limited partnership. To the extent an interest in any limited liability company or limited partnership controlled by any Grantor and pledged under
Section 2.01 is certificated or becomes certificated, (i) each such certificate shall be delivered to the Collateral Agent, pursuant to Section 2.02(a) and (ii) such Grantor shall fulfill all other requirements under
Section 2.02 applicable in respect thereof. Such Grantor hereby agrees that if any of the Pledged Collateral are at any time not evidenced by certificates of ownership, then each applicable Grantor shall, to the extent permitted by applicable
law, if necessary or desirable to perfect a security interest in such Pledged Collateral, upon the reasonable request of the Collateral Agent, cause such pledge to be recorded on the equity holder register or the books of the issuer, execute any
customary pledge forms or other documents necessary or appropriate to complete the pledge and give the Collateral Agent the right to transfer such Pledged Collateral under the terms hereof. 

Section 2.05 Registration in Nominee Name; Denominations. If an Event of Default shall have occurred and be continuing and
the Collateral Agent shall give the Borrower prior notice of its intent to exercise such rights, (a) the Collateral Agent, on behalf of the Secured Parties, shall have the right to hold the Pledged Securities in its own name as pledgee, the
name of its nominee (as pledgee or as sub-agent) or the name of the applicable Grantor, endorsed or assigned in blank or in favor of the Collateral Agent and each Grantor will promptly give to the Collateral Agent copies of any notices or other
communications received by it with respect to Pledged Equity registered in the name of such Grantor and (b) the Collateral Agent shall have the right to exchange the certificates representing Pledged Equity for certificates of smaller or larger
denominations for any purpose consistent with this Agreement, to the extent permitted by the documentation governing such Pledged Securities. 
 Section 2.06 Voting Rights; Dividends and Interest. 
 (a) Unless and
until an Event of Default shall have occurred and be continuing and the Collateral Agent shall have provided prior notice to the Borrower that the rights of the Grantors under this Section 2.06 are being suspended: 

(i) Each Grantor shall be entitled to exercise any and all voting and/or other consensual rights and powers inuring to an
owner of Pledged Securities or any part thereof, and each Grantor agrees that it shall exercise such rights for purposes consistent with the terms of this Agreement, the Credit Agreement and the other Loan Documents; 

  
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 (ii) The Collateral Agent shall promptly (after reasonable advance notice)
execute and deliver to each Grantor, or cause to be executed and delivered to such Grantor, all such proxies, powers of attorney and other instruments as such Grantor may reasonably request for the purpose of enabling such Grantor to exercise the
voting and/or consensual rights and powers it is entitled to exercise pursuant to subparagraph (i) above; and 
 (iii) Each Grantor shall be entitled to receive and retain any and all dividends, interest, principal and other distributions paid on or distributed in respect of the Pledged Securities to the extent and
only to the extent that such dividends, interest, principal and other distributions are permitted by, and otherwise paid or distributed in accordance with, the terms and conditions of the Credit Agreement, the other Loan Documents and applicable
Laws; provided that any noncash dividends, interest, principal or other distributions that would constitute Pledged Equity or Pledged Debt, whether resulting from a subdivision, combination or reclassification of the outstanding Equity
Interests of the issuer of any Pledged Securities or received in exchange for Pledged Securities or any part thereof, or in redemption thereof, or as a result of any merger, consolidation, acquisition or other exchange of assets to which such issuer
may be a party or otherwise, shall be and become part of the Pledged Collateral, and, if received by any Grantor, shall not be commingled by such Grantor with any of its other funds or property but shall be held separate and apart therefrom, shall
be held in trust for the benefit of the Collateral Agent and the Secured Parties and shall be promptly (and in any event within 10 Business Days) delivered to the Collateral Agent in the same form as so received (with any necessary endorsement
reasonably requested by the Collateral Agent). So long as no Default or Event of Default has occurred and is continuing, the Collateral Agent shall promptly deliver to each Grantor any Pledged Securities in its possession if requested to be
delivered to the issuer thereof in connection with any exchange or redemption of such Pledged Securities permitted by the Credit Agreement in accordance with this Section 2.06(a)(iii). 

(b) Upon the occurrence and during the continuance of an Event of Default, after the Collateral Agent shall have notified the Borrower of
the suspension of the Grantors’ rights under paragraph (a)(iii) of this Section 2.06, then all rights of any Grantor to dividends, interest, principal or other distributions that such Grantor is authorized to receive pursuant to paragraph
(a)(iii) of this Section 2.06 shall cease, and all such rights shall thereupon become vested in the Collateral Agent, which shall have the sole and exclusive right and authority to receive and retain such dividends, interest, principal or other
distributions. All dividends, interest, principal or other distributions received by any Grantor contrary to the provisions of this Section 2.06 shall be held in trust for the benefit of the Collateral Agent, shall be segregated from other
property or funds of such Grantor and shall be promptly (and in any event within 10 days) delivered to the Collateral Agent upon demand in the same form as so received (with any necessary endorsement reasonably requested by the Collateral Agent).
Any and all money and other property paid over to or received by the Collateral Agent pursuant to the provisions of this paragraph (b) shall be retained by the Collateral Agent in an account to be established by the Collateral Agent upon
receipt of such money or other property and shall be applied in accordance with the provisions of Section 4.02. After all Events of Default have been cured or waived, the Collateral Agent shall promptly repay to each Grantor (without interest)
all dividends, interest, principal or other distributions that such Grantor would otherwise be permitted to retain pursuant to the terms of paragraph (a)(iii) of this Section 2.06 and that remain in such account. 

(c) Upon the occurrence and during the continuance of an Event of Default, after the Collateral Agent shall have provided the Borrower
with notice of the suspension of the rights of the Grantors under paragraph (a)(i) of this Section 2.06, then, all rights of any Grantor to exercise the voting and consensual rights and powers it is entitled to exercise pursuant to paragraph
(a)(i) of this Section 2.06, and the obligations of the Collateral Agent under paragraph (a)(ii) of this Section 2.06, shall cease, and all 

  
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such rights shall thereupon become vested in the Collateral Agent, which shall have the sole and exclusive right and authority to exercise such voting and consensual rights and powers;
provided that, unless otherwise directed by the Required Lenders, the Collateral Agent shall have the right from time to time following and during the continuance of an Event of Default to permit the Grantors to exercise such rights. After
all Events of Default have been cured or waived, each Grantor shall have the exclusive right to exercise the voting and/or consensual rights and powers that such Grantor would otherwise be entitled to exercise pursuant to the terms of paragraph
(a)(i) above, and the obligations of the Collateral Agent under paragraph (a)(ii) of this Section 2.06 shall be reinstated. 
 (d) Any notice given by the Collateral Agent to the Borrower under Section 2.05 or Section 2.06 (i) shall be given in writing, (ii) may be given with respect to one or more Grantors at
the same or different times and (iii) may suspend the rights of the Grantors under paragraph (a)(i) or paragraph (a)(iii) of this Section 2.06 in part without suspending all such rights (as specified by the Collateral Agent in its sole and
absolute discretion) and without waiving or otherwise affecting the Collateral Agent’s rights to give additional notices from time to time suspending other rights so long as an Event of Default has occurred and is continuing. 

ARTICLE III 
 Security Interests in Personal Property 
 Section 3.01
Security Interest. 
 (a) As security for the payment or performance, as the case may be, in full of the Secured
Obligations, including the Guarantees, each Grantor hereby collaterally assigns and pledges to the Collateral Agent, its successors and assigns, for the benefit of the Secured Parties, and hereby grants to the Collateral Agent, its successors and
assigns, for the benefit of the Secured Parties, a security interest (the “Security Interest”) in, all right, title or interest in or to any and all of the following assets and properties now owned or at any time hereafter acquired
by such Grantor or in which such Grantor now has or at any time in the future may acquire any right, title or interest (collectively, the “Article 9 Collateral”): 

(i) all Accounts; 
 (ii) all Chattel Paper; 
 (iii) all Documents; 

(iv) all Equipment; 
 (v) all General Intangibles; 
 (vi) all Goods; 

(vii) all Instruments; 
 (viii) all Inventory; 
 (ix) all Investment Property; 

(x) all books and records pertaining to the Article 9 Collateral; 

  
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 (xi) all Fixtures; 

(xii) all Letter of Credit and Letter-of-Credit Rights in excess of $5,000,000; 

(xiii) all Intellectual Property; 
 (xiv) all Commercial Tort Claims listed on Schedule III and on any supplement thereto received by the Collateral Agent pursuant to Section 3.03(g); and 

(xv) to the extent not otherwise included, all Proceeds and products of any and all of the foregoing and all supporting
obligations, collateral security and guarantees given by any Person with respect to any of the foregoing; 
 provided that,
notwithstanding anything to the contrary in this Agreement, this Agreement shall not constitute a grant of a security interest in any Excluded Asset. 
 (b) Subject to Section 3.01(e), each Grantor hereby irrevocably authorizes the Collateral Agent for the benefit of the Secured Parties at any time and from time to time to file in any relevant
jurisdiction any initial financing statements with respect to the Article 9 Collateral or any part thereof and amendments thereto that (i) indicate the Article 9 Collateral as “all assets” or “all personal property” of such
Grantor or words of similar effect as being of an equal or lesser scope or with greater detail and (ii) contain the information required by Article 9 of the UCC or the analogous legislation of each applicable jurisdiction for the filing of any
financing statement or amendment, including whether such Grantor is an organization, the type of organization and, if required, any organizational identification number issued to such Grantor. Each Grantor agrees to provide such information to the
Collateral Agent promptly upon any reasonable request. 
 (c) The Security Interest is granted as security only and shall not
subject the Collateral Agent or any other Secured Party to, or in any way alter or modify, any obligation or liability of any Grantor with respect to or arising out of the Article 9 Collateral. 

(d) The Collateral Agent is authorized to file with the USPTO or the USCO (or any successor office) such documents executed by any
Grantor as may be necessary or advisable for the purpose of perfecting, confirming, continuing, enforcing or protecting the Security Interest in United States registered and applied for Intellectual Property of each Grantor in which a security
interest has been granted by each Grantor and naming any Grantor or the Grantor as debtors and the Collateral Agent as secured party. 
 (e) Notwithstanding anything to the contrary in the Loan Documents, none of the Grantors shall be required, nor is the Collateral Agent authorized, (i) to perfect the Security Interests granted by
this Security Agreement (including Security Interests in Investment Property and Fixtures) by any means other than by (A) filings pursuant to the Uniform Commercial Code in the office of the secretary of state (or similar central filing office)
of the relevant State(s), and filings in the applicable real estate records with respect to any fixtures relating to Mortgaged Property, (B) filings in United States government offices with respect to United States registered and applied for
Intellectual Property of Grantor as expressly required elsewhere herein, (C) delivery to the Collateral Agent to be held in its possession of all Collateral consisting of Instruments as expressly required elsewhere herein or (D) other
methods expressly provided herein, (ii) to enter into any deposit account control agreement, securities account control agreement or any other control agreement with respect to any deposit account, securities account or any other Collateral
that requires perfection by “control”, (iii) to take any action (other than the actions listed in clause (i)(A) and (C) above) with respect to any assets located outside of the United States, (iv) to perfect in any assets
subject to a certificate of title statute or (v) to deliver any Equity Interests except as expressly provided in Section 2.02. 

  
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 Section 3.02 Representations and Warranties. Each Grantor represents and
warrants to the Collateral Agent and the Secured Parties that: 
 (a) Subject to Liens permitted by Section 7.01 of the
Credit Agreement, each Grantor has good and valid rights in and title to the Article 9 Collateral with respect to which it has purported to grant a Security Interest hereunder and has full power and authority to grant to the Collateral Agent the
Security Interest in such Article 9 Collateral pursuant hereto and to execute, deliver and perform its obligations in accordance with the terms of this Agreement, without the consent or approval of any other Person other than any consent or approval
that has been obtained. 
 (b) The Perfection Certificate has been duly prepared, completed and executed and the information set
forth therein is correct and complete in all material respects (except the information therein with respect to the exact legal name of each Grantor shall be correct and complete in all respects) as of the Closing Date. Subject to
Section 3.01(e), the UCC financing statements or other appropriate filings, recordings or registrations prepared by the Collateral Agent based upon the information provided to the Collateral Agent in the Perfection Certificate for filing in the
applicable filing office (or specified by notice from the Borrower to the Collateral Agent after the Closing Date in the case of filings, recordings or registrations (other than filings required to be made in the USPTO and the USCO in order to
perfect the Security Interest in Article 9 Collateral consisting of United States registered and applied for Patents, Trademarks and Copyrights), in each case, as required by Section 6.11 of the Credit Agreement), are all the filings,
recordings and registrations that are necessary to establish a legal, valid and perfected security interest in favor of the Collateral Agent (for the benefit of the Secured Parties) in respect of all Article 9 Collateral in which the Security
Interest may be perfected by filing, recording or registration in the United States (or any political subdivision thereof) and its territories and possessions pursuant to the Uniform Commercial Code, and no further or subsequent filing, re-filing,
recording, rerecording, registration or re-registration is necessary in any such jurisdiction, except as provided under applicable Law with respect to the filing of continuation statements. 

(c) Each Grantor represents and warrants that short-form Intellectual Property Security Agreements substantially in the form attached
hereto as Exhibits III, IV and V and containing a description of all Article 9 Collateral consisting of material United States registered and applied for Patents, United States registered Trademarks (and Trademarks for which United States
registration applications are pending, unless it constitutes an Excluded Asset) and United States registered Copyrights, respectively, have been delivered to the Collateral Agent for recording by the USPTO and the USCO pursuant to 35 U.S.C. §
261, 15 U.S.C. § 1060 or 17 U.S.C. § 205 and the regulations thereunder, as applicable, (for the benefit of the Secured Parties) in respect of all Article 9 Collateral consisting of registrations and applications for United States Patents,
Trademarks and Copyrights. To the extent a security interest may be perfected by filing, recording or registration in USPTO or USCO under the Federal intellectual property laws, then no further or subsequent filing, re-filing, recording,
rerecording, registration or re-registration is necessary (other than (i) such filings and actions as are necessary to perfect the Security Interest with respect to any Article 9 Collateral consisting of United States registered and applied for
Patents, Trademarks and Copyrights acquired or developed by any Grantor after the date hereof and (ii) the UCC financing and continuation statements contemplated in Section 3.02(b)). 

(d) The Security Interest constitutes (i) a legal and valid security interest in all the Article 9 Collateral securing the payment
and performance of the Secured Obligations and (ii) subject to the filings described in Section 3.02(b), a perfected security interest in all Article 9 Collateral in which a security interest may be perfected by filing, recording or
registering a financing statement or analogous 

  
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document in the United States (or any political subdivision thereof) and its territories and possessions pursuant to the Uniform Commercial Code in the relevant jurisdiction. Subject to
Section 3.01(e) of this Agreement, the Security Interest is and shall be prior to any other Lien on any of the Article 9 Collateral, other than (i) any statutory or similar Lien that has priority as a matter of Law and (ii) any Liens
expressly permitted pursuant to Section 7.01 of the Credit Agreement. 
 (e) The Article 9 Collateral is owned by the
Grantors free and clear of any Lien, except for Liens expressly permitted pursuant to Section 7.01 of the Credit Agreement. None of the Grantors has filed or consented to the filing of (i) any financing statement or analogous document
under the Uniform Commercial Code or any other applicable Laws covering any Article 9 Collateral, (ii) any assignment in which any Grantor assigns any Article 9 Collateral owned by any Grantor or any security agreement or similar instrument
covering any Article 9 Collateral owned by any Grantor with the USPTO or the USCO, or (iii) any assignment in which any Grantor assigns any Article 9 Collateral or any security agreement or similar instrument covering any Article 9 Collateral
with any foreign governmental, municipal or other office, which financing statement or analogous document, assignment, security agreement or similar instrument is still in effect, except, in each case, for Liens expressly permitted pursuant to
Section 7.01 of the Credit Agreement and assignments permitted by the Credit Agreement. 
 (f) As of the date hereof, no
Grantor has any Commercial Tort Claim in excess of $5,000,000, other than the Commercial Tort Claims listed on Schedule III. 

Section 3.03 Covenants. 
 (a) The Borrower agrees to notify the Collateral Agent in writing promptly, but in any event within 60 days, after any change in (i) the legal name of any Grantor, (ii) the identity or type of
organization or corporate structure of any Grantor or (iii) the jurisdiction of organization of any Grantor. 
 (b) Subject
to Section 3.01(e), each Grantor shall, at its own expense, upon the reasonable request of the Collateral Agent, take any and all commercially reasonable actions necessary to defend title to the Article 9 Collateral against all Persons and to
defend the Security Interest of the Collateral Agent in the Article 9 Collateral and the priority thereof against any Lien not expressly permitted pursuant to Section 7.01 of the Credit Agreement; provided that, nothing in this Agreement
shall prevent any Grantor from discontinuing the operation or maintenance of any of its assets or properties if such discontinuance is (x) determined by such Grantor to be desirable in the conduct of its business and (y) permitted by the
Credit Agreement. 
 (c) Subject to Section 3.01(e), each Grantor agrees, at its own expense, to execute, acknowledge,
deliver and cause to be duly filed all such further instruments and documents and take all such actions as the Collateral Agent may from time to time reasonably request to better assure, preserve, protect and perfect the Security Interest and the
rights and remedies created hereby, including the payment of any fees and taxes required in connection with the execution and delivery of this Agreement, the granting of the Security Interest and the filing of any financing statements or other
documents in connection herewith or therewith. If any amount payable under or in connection with any of the Article 9 Collateral that is in excess of $2,500,000 shall be or become evidenced by any promissory note, other instrument or debt security,
such note, instrument or debt security shall be promptly (and in any event within 30 days of its acquisition) pledged and delivered to the Collateral Agent, for the benefit of the Secured Parties, duly endorsed in a manner reasonably satisfactory to
the Collateral Agent. 
 (d) At its option, the Collateral Agent may discharge past due taxes, assessments, charges, fees,
Liens, security interests or other encumbrances at any time levied or placed on the Article 9 Collateral and not permitted pursuant to Section 7.01 of the Credit Agreement, and may pay for the

  
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maintenance and preservation of the Article 9 Collateral to the extent any Grantor fails to do so as required by the Credit Agreement or any other Loan Document and within a reasonable period of
time after the Collateral Agent has requested that it do so, and each Grantor jointly and severally agrees to reimburse the Collateral Agent within 10 Business Days after demand for any payment made or any reasonable expense incurred by the
Collateral Agent pursuant to the foregoing authorization; provided, however, the Grantors shall not be obligated to reimburse the Collateral Agent with respect to any Intellectual Property that any Grantor has failed to maintain or
pursue, or otherwise allowed to lapse, terminate or be put into the public domain in accordance with Section 3.03(f)(iv). Nothing in this paragraph shall be interpreted as excusing any Grantor from the performance of, or imposing any obligation
on the Collateral Agent or any Secured Party to cure or perform, any covenants or other promises of any Grantor with respect to taxes, assessments, charges, fees, Liens, security interests or other encumbrances and maintenance as set forth herein or
in the other Loan Documents. 
 (e) If at any time any Grantor shall take a security interest in any property of an Account
Debtor or any other Person, the value of which is in excess of $2,500,000 to secure payment and performance of an Account, such Grantor shall promptly assign such security interest to the Collateral Agent for the benefit of the Secured Parties. Such
assignment need not be filed of public record unless necessary to continue the perfected status of the security interest against creditors of and transferees from the Account Debtor or other Person granting the security interest. 

(f) Intellectual Property Covenants. 
 (i) Other than to the extent not prohibited herein or in the Credit Agreement or with respect to registrations and applications no longer used or useful, except to the extent failure to act would not, as
deemed by the applicable Grantor in its reasonable business judgment, reasonably be expected to have a Material Adverse Effect, with respect to registration or pending application of each item of its Intellectual Property for which such Grantor has
standing to do so, each Grantor agrees to take, at its expense, all reasonable steps, including, without limitation, in the USPTO, the USCO and any other governmental authority located in the United States, to pursue the registration and maintenance
of each Patent, Trademark, or Copyright registration or application, now or hereafter included in the Intellectual Property of such Grantor that are not Excluded Assets. 

(ii) Other than to the extent not prohibited herein or in the Credit Agreement, or with respect to registrations and
applications no longer used or useful, or except as would not, as deemed by the applicable Grantor in its reasonable business judgment, reasonably be expected to have a Material Adverse Effect, no Grantor shall do or permit any act or knowingly omit
to do any act whereby any of its Intellectual Property, excluding Excluded Assets, may prematurely lapse, be terminated, or become invalid or unenforceable or placed in the public domain (or in the case of a trade secret, become publicly known).

 (iii) Other than as excluded or as not prohibited herein or in the Credit Agreement, or with respect to
Patents, Copyrights or Trademarks which are no longer used or useful in the applicable Grantor’s business operations or except where failure to do so would not, as deemed by the applicable Grantor in its reasonable business judgment, reasonably
be expected to have a Material Adverse Effect, each Grantor shall take all reasonable steps to preserve and enforce each item of its Intellectual Property, including, without limitation, maintaining the quality of any and all products or services
used or provided in connection with any of the Trademarks, consistent with the quality of the products and services as of the date hereof, and taking reasonable steps necessary to ensure that all licensed users of any of the material Trademarks
abide by the applicable license’s terms with respect to standards of quality. 

  
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 (iv) Notwithstanding any other provision of this Agreement, nothing in this
Agreement or any other Loan Document prevents or shall be deemed to prevent any Grantor from disposing of, discontinuing the use or maintenance of, failing to pursue, or otherwise allowing to lapse, expire, terminate or be put into the public
domain, any of its Intellectual Property to the extent permitted by the Credit Agreement if such Grantor determines in its reasonable business judgment that such discontinuance is desirable in the conduct of its business. 

(v) Within 30 days after each March 31 and September 30, the Borrower shall provide a list of any additional
registrations of Intellectual Property of all Grantors with the USPTO and USCO not previously disclosed to the Collateral Agent including such information as is necessary for such Grantor to make appropriate filings in the USPTO and USCO.

 (g) Commercial Tort Claims. If the Grantors shall at any time hold or acquire a Commercial Tort Claim in an amount
reasonably estimated by such Grantor to exceed $5,000,000 for which this clause has not been satisfied and for which a complaint in a court of competent jurisdiction has been filed, such Grantor shall within 45 days after the end of the fiscal
quarter in which such complaint was filed notify the Collateral Agent thereof in a writing signed by such Grantor including a summary description of such claim and grant to the Collateral Agent, for the benefit of the Secured Parties, in such
writing a security interest therein and in the proceeds thereof, all upon the terms of this Agreement. 
 ARTICLE IV

 Remedies 
 Section 4.01 Remedies Upon Default. Upon the occurrence and during the continuance of an Event of Default, it is agreed that the Collateral Agent shall have the right to exercise any and all
rights afforded to a secured party with respect to the Secured Obligations, including the Guarantees, under the Uniform Commercial Code or other applicable Law and also may (i) require each Grantor to, and each Grantor agrees that it will at
its expense and upon request of the Collateral Agent promptly, assemble all or part of the Collateral as directed by the Collateral Agent and make it available to the Collateral Agent at a place and time to be designated by the Collateral Agent that
is reasonably convenient to both parties; (ii) occupy any premises owned or, to the extent lawful and permitted, leased by any of the Grantors where the Collateral or any part thereof is assembled or located for a reasonable period in order to
effectuate its rights and remedies hereunder or under Law, without obligation to such Grantor in respect of such occupation; provided that the Collateral Agent shall provide the applicable Grantor with notice thereof prior to such occupancy;
(iii) exercise any and all rights and remedies of any of the Grantors under or in connection with the Collateral, or otherwise in respect of the Collateral; provided that the Collateral Agent shall provide the applicable Grantor with
notice thereof prior to such exercise; and (iv) subject to the mandatory requirements of applicable Law and the notice requirements described below, sell or otherwise dispose of all or any part of the Collateral securing the Secured Obligations
at a public or private sale or at any broker’s board or on any securities exchange, for cash, upon credit or for future delivery as the Collateral Agent shall deem appropriate. The Collateral Agent shall be authorized at any such sale of
securities (if it deems it advisable to do so) to restrict the prospective bidders or purchasers to Persons who will represent and agree that they are purchasing the Collateral for their own account for investment and not with a view to the
distribution or sale thereof, and upon consummation of any such sale the Collateral Agent shall have the right to assign, transfer and deliver to the purchaser or purchasers thereof the Collateral so sold. Each such purchaser at any sale of
Collateral shall hold the property sold absolutely, free from any claim or right on the part of any Grantor, and each Grantor hereby waives (to the extent permitted by Law) all rights of redemption, stay and appraisal which such Grantor now has or
may at any time in the future have under any Law now existing or hereafter enacted. 

  
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 The Collateral Agent shall give the applicable Grantors 10 days’ written notice (which
each Grantor agrees is reasonable notice within the meaning of Section 9-611 of the UCC or its equivalent in other jurisdictions) of the Collateral Agent’s intention to make any sale of Collateral. Such notice, in the case of a public
sale, shall state the time and place for such sale and, in the case of a sale at a broker’s board or on a securities exchange, shall state the board or exchange at which such sale is to be made and the day on which the Collateral, or portion
thereof, will first be offered for sale at such board or exchange. Any such public sale shall be held at such time or times within ordinary business hours and at such place or places as the Collateral Agent may fix and state in the notice (if any)
of such sale. At any such sale, the Collateral, or portion thereof, to be sold may be sold in one lot as an entirety or in separate parcels, as the Collateral Agent may (in its sole and absolute discretion) determine. The Collateral Agent shall not
be obligated to make any sale of any Collateral if it shall determine not to do so, regardless of the fact that notice of sale of such Collateral shall have been given. The Collateral Agent may, without notice or publication, adjourn any public or
private sale or cause the same to be adjourned from time to time by announcement at the time and place fixed for sale, and such sale may, without further notice, be made at the time and place to which the same was so adjourned. In case any sale of
all or any part of the Collateral is made on credit or for future delivery, the Collateral so sold may be retained by the Collateral Agent until the sale price is paid by the purchaser or purchasers thereof, but the Collateral Agent shall not incur
any liability in case any such purchaser or purchasers shall fail to take up and pay for the Collateral so sold and, in case of any such failure, such Collateral may be sold again upon like notice. At any public (or, to the extent permitted by Law,
private) sale made pursuant to this Agreement, any Secured Party may bid for or purchase, free (to the extent permitted by Law) from any right of redemption, stay, valuation or appraisal on the part of any Grantor (all said rights being also hereby
waived and released to the extent permitted by Law), the Collateral or any part thereof offered for sale and may make payment on account thereof by using any claim then due and payable to such Secured Party from any Grantor as a credit against the
purchase price, and such Secured Party may, upon compliance with the terms of sale, hold, retain and dispose of such property without further accountability to any Grantor therefor. For purposes hereof, a written agreement to purchase the Collateral
or any portion thereof shall be treated as a sale thereof; the Collateral Agent shall be free to carry out such sale pursuant to such agreement and no Grantor shall be entitled to the return of the Collateral or any portion thereof subject thereto,
notwithstanding the fact that after the Collateral Agent shall have entered into such an agreement all Events of Default shall have been remedied and the Secured Obligations paid in full. As an alternative to exercising the power of sale herein
conferred upon it, the Collateral Agent may proceed by a suit or suits at Law or in equity to foreclose this Agreement and to sell the Collateral or any portion thereof pursuant to a judgment or decree of a court or courts having competent
jurisdiction or pursuant to a proceeding by a court-appointed receiver. Any sale pursuant to the provisions of this Section 4.01 shall be deemed to conform to the commercially reasonable standards as provided in Section 9-610(b) of the UCC
or its equivalent in other jurisdictions. 
 Section 4.02 Application of Proceeds. The Collateral Agent shall apply
the proceeds of any collection or sale of Collateral, including any Collateral consisting of cash in accordance with Section 8.04 of the Credit Agreement. 
 The Collateral Agent shall have absolute discretion as to the time of application of any such proceeds, moneys or balances in accordance with this Agreement. Upon any sale of Collateral by the Collateral
Agent (including pursuant to a power of sale granted by statute or under a judicial proceeding), the receipt of the Collateral Agent or of the officer making the sale shall be a sufficient discharge to the purchaser or purchasers of the Collateral
so sold and such purchaser or purchasers shall not be obligated to see to the application of any part of the purchase money paid over to the Collateral Agent or such officer or be answerable in any way for the misapplication thereof. 

  
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 The Collateral Agent shall have no liability to any of the Secured Parties for actions
taken in reliance on information supplied to it as to the amounts of unpaid principal and interest and other amounts outstanding with respect to the Secured Obligations, provided that nothing in this sentence shall prevent any Grantor from
contesting any amounts claimed by any Secured Party in any information so supplied. All distributions made by the Collateral Agent pursuant to this Section 4.02 shall be (subject to any decree of any court of competent jurisdiction) final
(absent manifest error), and the Collateral Agent shall have no duty to inquire as to the application by the Administrative Agent of any amounts distributed to it. 
 Section 4.03 Grant of License to Use Intellectual Property. For the exclusive purpose of enabling the Collateral Agent to exercise rights and remedies under this Agreement at such time as the
Collateral Agent shall be lawfully entitled to exercise such rights and remedies at any time after and during the continuance of an Event of Default, each Grantor hereby grants to the Collateral Agent a non-exclusive, royalty-free, limited license
(until the termination or cure of the Event of Default) to use, license or, solely to the extent necessary to exercise those rights and remedies, sublicense any of the Intellectual Property now owned or hereafter acquired by such Grantor, and
wherever the same are located, and including in such license necessary access to media in which such licensed items are recorded or stored and to computer software and programs used for the compilation or printout thereof; provided,
however, that all of the foregoing rights of the Collateral Agent to use such licenses, sublicenses and other rights, and (to the extent permitted by the terms of such licenses and sublicenses) all licenses and sublicenses granted thereunder,
shall expire immediately upon the termination or cure of all Events of Default and shall be exercised by the Collateral Agent solely during the continuance of an Event of Default and upon 10 Business Days’ prior written notice to the applicable
Grantor; provided, further, that nothing in this Section 4.03 shall require Grantors to grant any license that is prohibited by any rule of law, statute or regulation, or is prohibited by, or constitutes a breach or default under or
results in the termination of or gives rise to any right of cancellation under any contract, license, agreement, instrument or other document evidencing, giving rise to or theretofore granted, to the extent permitted by the Credit Agreement, with
respect to such property or otherwise prejudices the value thereof to the relevant Grantor; provided, further, that such licenses granted hereunder with respect to Trademarks material to the business of such Grantor shall be subject to
restrictions, including, without limitation restrictions as to goods or services associated with such Trademarks and the maintenance of quality standards with respect to the goods and services on which such Trademarks are used, sufficient to
preserve the validity and value of such Trademarks. For the avoidance of doubt, the use of such license by the Collateral Agent may be exercised, at the option of the Collateral Agent, only during the continuation of an Event of Default and upon 10
Business Days’ prior written notice to the applicable Grantor. Upon the occurrence and during the continuance of an Event of Default and upon 10 Business Days’ prior written notice to the applicable Grantor , the Collateral Agent may also
exercise the rights afforded under Section 4.01 of this Agreement with respect to Intellectual Property contained in the Article 9 Collateral. 
 ARTICLE V 
 Subordination 

Section 5.01 Subordination. 
 (a) Notwithstanding any provision of this Agreement to the contrary, all rights of the Grantors of indemnity, contribution or subrogation under applicable law or otherwise shall be fully subordinated to
the payment in full in cash of the Secured Obligations. No failure on the part of the Borrower or any Grantor to make the payments required under applicable law or otherwise shall in any respect limit the obligations and liabilities of any Grantor
with respect to its obligations hereunder, and each Grantor shall remain liable for the full amount of the obligations of such Grantor hereunder. 
 (b) Each Grantor hereby agrees that upon the occurrence and during the continuance of an Event of Default and after notice from the Collateral Agent, all Indebtedness owed to it by any other Grantor shall
be fully subordinated to the payment in full in cash of the Secured Obligations. 

  
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 ARTICLE VI 

Miscellaneous 
 Section 6.01 Notices. All communications and notices hereunder shall (except as otherwise expressly permitted herein) be in writing and given as provided in Section 10.02 of the Credit
Agreement. All communications and notices hereunder to the Borrower or any other Grantor shall be given to it in care of the Borrower as provided in Section 10.02 of the Credit Agreement. 

Section 6.02 Waivers; Amendment. 
 (a) No failure or delay by any Secured Party in exercising any right, remedy, power or privilege hereunder or under any other Loan Document shall operate as a waiver thereof, nor shall any single or
partial exercise of any such right, remedy, power or privilege hereunder preclude any other or further exercise thereof or the exercise of any other right, remedy, power or privilege. The rights, remedies, powers and privileges of the Secured
Parties herein provided, and provided under each other Loan Document, are cumulative and are not exclusive of any rights, remedies, powers and privileges provided by Law. No waiver of any provision of this Agreement or consent to any departure by
any Grantor therefrom shall in any event be effective unless the same shall be permitted by paragraph (b) of this Section 6.02, and then such waiver or consent shall be effective only in the specific instance and for the purpose for which
given. Without limiting the generality of the foregoing, the making of a Loan, the issuance of a Letter of Credit or the provision of services under Cash Management Obligations or Secured Hedge Agreements shall not be construed as a waiver of any
Default, regardless of whether any Secured Party may have had notice or knowledge of such Default at the time. 
 (b) Neither
this Agreement nor any provision hereof may be waived, amended or modified except pursuant to an agreement or agreements in writing entered into by the Collateral Agent and the Grantor or Grantors with respect to which such waiver, amendment or
modification is to apply, subject to any consent required in accordance with Section 10.01 of the Credit Agreement. 

Section 6.03 Collateral Agent’s Fees and Expenses; Indemnification. 

(a) The parties hereto agree that the Collateral Agent shall be entitled to reimbursement of its reasonable out-of-pocket expenses
incurred hereunder and indemnity for its actions in connection herewith, in each case, as provided in Sections 10.04 and 10.05 of the Credit Agreement. 
 (b) Any such amounts payable as provided hereunder shall be additional Secured Obligations secured hereby and by the other Collateral Documents. The provisions of this Section 6.03 shall remain
operative and in full force and effect regardless of the termination of this Agreement or any other Loan Document, the consummation of the transactions contemplated hereby, the repayment of any of the Secured Obligations, the invalidity or
unenforceability of any term or provision of this Agreement or any other Loan Document, or any investigation made by or on behalf of the Collateral Agent or any other Secured Party. All amounts due under this Section 6.03 shall be payable
within 10 days of written demand therefor. 
 Section 6.04 Successors and Assigns. The provisions of this Agreement
shall be binding upon and inure to the benefit of the parties hereto and their respective successors and assigns. 

  
 -18-

 Section 6.05 Survival of Agreement. All covenants, agreements, representations
and warranties made by the Grantors hereunder and in the other Loan Documents and in the certificates or other instruments prepared or delivered in connection with or pursuant to this Agreement shall be considered to have been relied upon by the
Secured Parties and shall survive the execution and delivery of the Loan Documents, the making of any Loans and issuance of any Letters of Credit and the provision of services under Cash Management Obligations or Secured Hedge Agreements, regardless
of any investigation made by any Secured Party or on its behalf and notwithstanding that any Secured Party may have had notice or knowledge of any Default at the time any credit is extended under the Credit Agreement, and shall continue in full
force and effect as long as this Agreement has not been terminated or released pursuant to Section 6.12 below. 

Section 6.06 Counterparts; Effectiveness; Several Agreement. This Agreement may be executed in one or more counterparts, each
of which shall be deemed an original, but all of which together shall constitute one and the same instrument. Delivery by facsimile or other electronic communication of an executed counterpart of a signature page to this Agreement shall be effective
as delivery of an original executed counterpart of this Agreement. This Agreement shall become effective as to any Grantor when a counterpart hereof executed on behalf of such Grantor shall have been delivered to the Collateral Agent and a
counterpart hereof shall have been executed on behalf of the Collateral Agent, and thereafter shall be binding upon such Grantor and the Collateral Agent and their respective permitted successors and assigns, and shall inure to the benefit of such
Grantor, the Collateral Agent and the other Secured Parties and their respective permitted successors and assigns, except that no Grantor shall have the right to assign or transfer its rights or obligations hereunder or any interest herein or in the
Collateral (and any such assignment or transfer shall be void) except as expressly contemplated by this Agreement or the Credit Agreement. This Agreement shall be construed as a separate agreement with respect to each Grantor and may be amended,
modified, supplemented, waived or released with respect to any Grantor without the approval of any other Grantor and without affecting the obligations of any other Grantor hereunder. 

Section 6.07 Severability. If any provision of this Agreement is held to be illegal, invalid or unenforceable, the legality,
validity and enforceability of the remaining provisions of this Agreement shall not be affected or impaired thereby. The invalidity of a provision in a particular jurisdiction shall not invalidate or render unenforceable such provision in any other
jurisdiction. 
 Section 6.08 Right of Set-Off. In addition to any rights and remedies of the Secured Parties
provided by Law, upon the occurrence and during the continuance of any Event of Default, each Secured Party and its Affiliates is authorized at any time and from time to time, without prior notice to any Grantor, any such notice being waived by each
Grantor to the fullest extent permitted by applicable Law, to set-off and apply any and all deposits (general or special, time or demand, provisional or final) at any time held by, and other Indebtedness at any time owing by, such Secured Party and
its Affiliates to or for the credit or the account of the respective Grantors against any and all Obligations owing to such Secured Party and its Affiliates hereunder, now or hereafter existing, irrespective of whether or not such Secured Party or
Affiliate shall have made demand under this Agreement and although such Obligations may be contingent or unmatured or denominated in a currency different from that of the applicable deposit or Indebtedness. Each Secured Party agrees promptly to
notify the applicable Grantor and the Collateral Agent after any such set-off and application made by such Secured Party; provided, that the failure to give such notice shall not affect the validity of such set-off and application. The rights
of each Secured Party under this Section 6.08 are in addition to other rights and remedies (including other rights of set-off) that such Secured Party may have at Law. 

  
 -19-

 Section 6.09 Governing Law; Jurisdiction; Venue; Waiver of Jury Trial; Consent to
Service of Process. 
 (a) The terms of Sections 10.15 and 10.16 of the Credit Agreement with respect to governing law,
submission of jurisdiction, venue and waiver of jury trial are incorporated herein by reference, mutatis mutandis, and the parties hereto agree to such terms. 
 (b) Each party to this Agreement irrevocably consents to service of process in the manner provided for notices in Section 6.01. Nothing in this Agreement will affect the right of any party to this
Agreement to serve process in any other manner permitted by Law. 
 Section 6.10 Headings. Article and Section
headings and the Table of Contents used herein are for convenience of reference only, are not part of this Agreement and are not to affect the construction of, or to be taken into consideration in interpreting, this Agreement. 

Section 6.11 Security Interest Absolute. To the extent permitted by Law, all rights of the Collateral Agent hereunder, the
Security Interest, the grant of a security interest in the Pledged Collateral and all obligations of each Grantor hereunder shall be absolute and unconditional irrespective of (a) any lack of validity or enforceability of the Credit Agreement,
any other Loan Document, any agreement with respect to any of the Secured Obligations or any other agreement or instrument relating to any of the foregoing, (b) any change in the time, manner or place of payment of, or in any other term of, all
or any of the Secured Obligations, or any other amendment or waiver of or any consent to any departure from the Credit Agreement, any other Loan Document or any other agreement or instrument, (c) any exchange, release or non-perfection of any
Lien on other collateral, or any release or amendment or waiver of or consent under or departure from any guarantee, securing or guaranteeing all or any of the Secured Obligations or (d) any other circumstance that might otherwise constitute a
defense available to, or a discharge of, any Grantor in respect of the Secured Obligations or this Agreement. 

Section 6.12 Termination or Release. 
 (a) This Agreement, the Security Interest and all other security interests granted hereby shall terminate with respect to all Secured Obligations and any Liens arising therefrom shall be automatically
released upon termination of the Aggregate Commitments and payment in full of all Obligations (other than (i) Cash Management Obligations or obligations under Secured Hedge Agreements not yet due and payable and (ii) contingent obligations
not yet accrued and payable) and the expiration or termination of all Letters of Credit (other than Letters of Credit in which the Outstanding Amount of the L/C Obligations related thereto have been Cash Collateralized or, if satisfactory to the
relevant L/C Issuer in its reasonable discretion, for which a backstop letter of credit is in place). 
 (b) A Subsidiary Party
shall automatically be released from its obligations under the Guaranty and the Security Interest in the Collateral of such Subsidiary Party shall be automatically released if such Person ceases to be a Subsidiary of the Borrower or becomes an
Excluded Subsidiary (other than pursuant to clause (b) of the definition thereof unless the Borrower delivers a written request to the Administrative Agent for such release and no Default has occurred and is continuing at such time) as a result
of a transaction or designation permitted under the Credit Agreement; provided that no such release shall occur if such Subsidiary Party continues to be a guarantor in respect of any Junior Financing. 

(c) Upon any sale or transfer by any Grantor of any Collateral that is permitted under the Credit Agreement (other than a sale or
transfer to another Loan Party), or upon the effectiveness of any written consent to the release of the security interest granted hereby in any Collateral pursuant to Section 10.01 of the Credit Agreement, the Security Interest in such
Collateral shall be automatically released. 

  
 -20-

 (d) In connection with any termination or release pursuant to paragraph (a), (b) or
(c) of this Section 6.12, the Collateral Agent shall execute and deliver to any Grantor, at such Grantor’s expense, all documents that such Grantor shall reasonably request to evidence such termination or release and shall perform
such other actions reasonably requested by such Grantor to effect such release, including delivery of certificates, securities and instruments. Any execution and delivery of documents pursuant to this Section 6.12 shall be without recourse to
or warranty by the Collateral Agent. 
 (e) Notwithstanding anything to the contrary set forth in this Agreement, each Hedge
Bank and each Cash Management Bank by the acceptance of the benefits under this Agreement hereby acknowledges and agrees that (i) the Security Interests granted under this Agreement of the Obligations of any Grantor and its Subsidiaries under
any Secured Hedge Agreement and any Cash Management Obligations shall be automatically released upon termination of the Commitments and payment in full of all other Obligations and the expiration or termination of all Letters of Credit (other than
Letters of Credit in which the Outstanding Amount of the L/C Obligations related thereto have been Cash Collateralized or, if satisfactory to the relevant L/C Issuer in its reasonable discretion, for which a backstop letter of credit is in place),
in each case, unless the Obligations under the Secured Hedge Agreement or the Cash Management Obligations are due and payable at such time (it being understood and agreed that this Agreement and Security Interests granted herein shall survive solely
as to such due and payable Obligations and until such time as such due and payable Obligations have been paid in full) and (ii) any release of Collateral or of a Grantor, as the case may be, effective in the manner permitted by this Agreement
shall not require the consent of any Hedge Bank or any Cash Management Bank that is not a Lender. 
 Section 6.13
Additional Grantors. Pursuant to Section 6.11 of the Credit Agreement, certain additional Subsidiaries of the Borrower may be required to enter in this Agreement as Grantors. Upon execution and delivery by the Collateral Agent and a
Subsidiary of a Security Agreement Supplement, such Subsidiary shall become a Grantor hereunder with the same force and effect as if originally named as a Grantor herein. The execution and delivery of any such instrument shall not require the
consent of any other Grantor hereunder. The rights and obligations of each Grantor hereunder shall remain in full force and effect notwithstanding the addition of any new Grantor as a party to this Agreement. 

Section 6.14 Collateral Agent Appointed Attorney-in-Fact. Each Grantor hereby appoints the Collateral Agent (and all
officers, employees or agents designated by the Collateral Agent) as such Grantor’s true and lawful agent (and attorney-in-fact) of such Grantor for the purpose of carrying out the provisions of this Agreement and taking any action and
executing any instrument that the Collateral Agent may deem necessary or advisable to accomplish the purposes hereof at any time after and during the continuance of an Event of Default, which appointment is irrevocable and coupled with an interest
(provided that the Collateral Agent shall provide the applicable Grantor with notice thereof prior to exercising such rights). Without limiting the generality of the foregoing, the Collateral Agent shall have the right, upon the occurrence and
during the continuance of an Event of Default and notice by the Collateral Agent to the applicable Grantor of the Collateral Agent’s intent to exercise such rights, with full power of substitution either in the Collateral Agent’s name or
in the name of such Grantor (a) to receive, endorse, assign and/or deliver any and all notes, acceptances, checks, drafts, money orders or other evidences of payment relating to the Collateral or any part thereof; (b) to demand, collect,
receive payment of, give receipt for and give discharges and releases of all or any of the Collateral or Mortgaged Property; (c) to sign the name of any Grantor on any invoice or bill of lading relating to any of the Collateral or Mortgaged
Property; (d) to send verifications of Accounts Receivable to any Account Debtor; (e) to commence and prosecute any and all suits, actions or proceedings at Law or in equity in any court of competent jurisdiction to collect or otherwise
realize on all or any of the Collateral or Mortgaged Property or to enforce any rights in respect of any Collateral or Mortgaged Property; (f) to settle, compromise, compound, adjust or defend any actions, suits or proceedings relating to all
or any of the Collateral or Mortgaged Property; (g) to notify, or to require any Grantor to notify, Account Debtors to make payment 

  
 -21-

 
directly to the Collateral Agent; (h) to make, settle and adjust claims in respect of Article 9 Collateral or Mortgaged Property under policies of insurance, endorsing the name of such
Grantor on any check, draft, instrument or other item of payment for the proceeds of such policies of insurance; (i) to make all determinations and decisions with respect thereto; (j) to obtain or maintain the policies of insurance
required by Section 6.07 of the Credit Agreement or paying any premium in whole or in part relating thereto; and (k) to use, sell, assign, transfer, pledge, make any agreement with respect to or otherwise deal with all or any of the
Collateral or Mortgaged Property, and to do all other acts and things necessary to carry out the purposes of this Agreement, as fully and completely as though the Collateral Agent were the absolute owner of the Collateral or Mortgaged Property for
all purposes; provided that nothing herein contained shall be construed as requiring or obligating the Collateral Agent to make any commitment or to make any inquiry as to the nature or sufficiency of any payment received by the Collateral
Agent, or to present or file any claim or notice, or to take any action with respect to the Collateral or Mortgaged Property or any part thereof or the moneys due or to become due in respect thereof or any property covered thereby. The Collateral
Agent and the other Secured Parties shall be accountable only for amounts actually received as a result of the exercise of the powers granted to them herein, and neither they nor their officers, directors, employees or agents shall be responsible to
any Grantor for any act or failure to act hereunder, except for their own gross negligence, bad faith, or willful misconduct or that of any of their Affiliates, directors, officers, employees, counsel, agents or attorneys-in-fact, in each case, as
determined by a final non-appealable judgment of a court of competent jurisdiction. All sums disbursed by the Collateral Agent in connection with this paragraph, including reasonable attorneys’ fees, court costs, expenses and other charges
relating thereto, shall be payable, within 10 days of demand, by the Grantors to the Collateral Agent and shall be additional Secured Obligations secured hereby. 
 Section 6.15 General Authority of the Collateral Agent. By acceptance of the benefits of this Agreement and any other Collateral Documents, each Secured Party (whether or not a signatory
hereto) shall be deemed irrevocably (a) to consent to the appointment of the Collateral Agent as its agent hereunder and under such other Collateral Documents, (b) to confirm that the Collateral Agent shall have the authority to act as the
exclusive agent of such Secured Party for the enforcement of any provisions of this Agreement and such other Collateral Documents against any Grantor, the exercise of remedies hereunder or thereunder and the giving or withholding of any consent or
approval hereunder or thereunder relating to any Collateral or any Grantor’s obligations with respect thereto, (c) to agree that it shall not take any action to enforce any provisions of this Agreement or any other Collateral Document
against any Grantor, to exercise any remedy hereunder or thereunder or to give any consents or approvals hereunder or thereunder except as expressly provided in this Agreement or any other Collateral Document and (d) to agree to be bound by the
terms of this Agreement and any other Collateral Documents. 
 Section 6.16 Reasonable Care. The Collateral Agent is
required to use reasonable care in the custody and preservation of any of the Collateral in its possession; provided, that the Collateral Agent shall be deemed to have used reasonable care in the custody and preservation of any of the
Collateral or Mortgaged Property, if such Collateral or Mortgaged Property is accorded treatment substantially similar to that which the Collateral Agent accords its own property. 

Section 6.17 Delegation; Limitation. The Collateral Agent may execute any of the powers granted under this Agreement or the
Mortgages and perform any duty hereunder either directly or by or through agents or attorneys-in-fact, and shall not be responsible for the gross negligence or willful misconduct of any agents or attorneys-in-fact selected by it with reasonable care
and without gross negligence or willful misconduct. 
 Section 6.18 Reinstatement. The obligations of the Grantors
under this Security Agreement shall be automatically reinstated if and to the extent that for any reason any payment by or on behalf of the Borrower or other Loan Party in respect of the Secured Obligations is rescinded or must be otherwise restored
by any holder of any of the Secured Obligations, whether as a result of any proceedings in bankruptcy or reorganization or otherwise. 

  
 -22-

 Section 6.19 Miscellaneous. The Collateral Agent shall not be deemed to have
actual, constructive, direct or indirect notice or knowledge of the occurrence of any Event of Default unless and until the Collateral Agent shall have received a notice of Event of Default or a notice from the Grantor or the Secured Parties to the
Collateral Agent in its capacity as Collateral Agent indicating that an Event of Default has occurred. 
 [Signature Pages
Follow] 

  
 -23-

 IN WITNESS WHEREOF, the parties hereto have duly executed this Agreement as of the date
first written above. 
  

					
	SUMMIT MATERIALS, LLC
		
	By:	 	 /s/ Michael Brady

		 	Name:	 	Michael Brady
		 	Title:	 	Vice President
	
	SUMMIT MATERIALS HOLDINGS I, LLC
		
	By:	 	 /s/ Michael Brady

		 	Name:	 	Michael Brady
		 	Title:	 	Vice President
	
	SUMMIT MATERIALS HOLDINGS II, LLC
		
	By:	 	 /s/ Michael Brady

		 	Name:	 	Michael Brady
		 	Title:	 	Vice President
	
	SUMMIT MATERIALS COMPANIES I, LLC
		
	By:	 	 /s/ Michael Brady

		 	Name:	 	Michael Brady
		 	Title:	 	Vice President
	
	SUMMIT MATERIALS CORPORATIONS I, INC.
		
	By:	 	 /s/ Michael Brady

		 	Name:	 	Michael Brady
		 	Title:	 	Vice President

  
 -24-

 
					
	CONTINENTAL CEMENT COMPANY, L.L.C.
		
	By:	 	 /s/ R. Michael Johnson

		 	Name:	 	R. Michael Johnson
		 	Title:	 	Chief Executive Officer
	
	B&B RESOURCES, INC.
		
	By:	 	 /s/ Michael Brady

		 	Name:	 	Michael Brady
		 	Title:	 	Vice President
	
	VALLEY READY MIX, INC.
		
	By:	 	 /s/ Anya Fonina

		 	Name:	 	Anya Fonina
		 	Title:	 	Vice President
	
	SALT LAKE VALLEY SAND & GRAVEL, INC.
		
	By:	 	 /s/ Anya Fonina

		 	Name:	 	Anya Fonina
		 	Title:	 	Vice President
	
	ELAM CONSTRUCTION, INC.
		
	By:	 	 /s/ Michael Brady

		 	Name:	 	Michael Brady
		 	Title:	 	Vice President
	
	ELAM PAVING, INC.
		
	By:	 	 /s/ Anya Fonina

		 	Name:	 	Anya Fonina
		 	Title:	 	Vice President

  
 -25-

 
					
	HAMM, INC.
		
	By:	 	 /s/ Michael Brady

		 	Name:	 	Michael Brady
		 	Title:	 	Vice President
	
	HAMM ASPHALT, LLC
		
	By:	 	 /s/ Michael Brady

		 	Name:	 	Michael Brady
		 	Title:	 	Vice President
	
	N.R. HAMM CONTRACTOR, LLC
		
	By:	 	 /s/ Michael Brady

		 	Name:	 	Michael Brady
		 	Title:	 	Vice President
	
	N.R. HAMM QUARRY, LLC
		
	By:	 	 /s/ Michael Brady

		 	Name:	 	Michael Brady
		 	Title:	 	Vice President
	
	RK HALL, LLC
		
	By:	 	 /s/ Michael Brady

		 	Name:	 	Michael Brady
		 	Title:	 	Vice President
	
	R.K. HALL CONSTRUCTION, LTD.
		
	By:	 	RKH Capital, L.L.C., its general partner
		
	By:	 	 /s/ Michael Brady

		 	Name:	 	Michael Brady
		 	Title:	 	Vice President

  
 -26-

 
					
	SCS MATERIALS, L.P.
		
	By:	 	RKH Capital, L.L.C., its general partner
		
	By:	 	 /s/ Michael Brady

		 	Name:	 	Michael Brady
		 	Title:	 	Vice President
	
	B&H CONTRACTING, L.P.
		
	By:	 	RKH Capital, L.L.C., its general partner
		
	By:	 	 /s/ Michael Brady

		 	Name:	 	Michael Brady
		 	Title:	 	Vice President
	
	RKH CAPITAL, L.L.C.
		
	By:	 	 /s/ Michael Brady

		 	Name:	 	Michael Brady
		 	Title:	 	Vice President
	
	CON-AGG OF MO, L.L.C.
		
	By:	 	Summit Materials Companies I, LLC, its sole
		 	member
		
	By:	 	 /s/ Michael Brady

		 	Name:	 	Michael Brady
		 	Title:	 	Vice President
	
	QUARRY PROPERTIES, L.L.C.
		
	By:	 	 /s/ Michael Brady

		 	Name:	 	Michael Brady
		 	Title:	 	Manager

  
 -27-

 
					
	FISCHER QUARRIES, L.L.C.
		
	By:	 	Con-Agg of MO, L.L.C., its sole member
			
		 	By:	 	 Summit Materials Companies I, LLC,
 its sole member

		
	By:	 	 /s/ Michael Brady

		 	Name:	 	Michael Brady
		 	Title:	 	Vice President
	
	HINKLE CONTRACTING COMPANY, LLC
		
	By:	 	 /s/ Michael Brady

		 	Name:	 	Michael Brady
		 	Title:	 	Vice President
	
	BOURBON LIMESTONE COMPANY
		
	By:	 	 /s/ Thomas Hinkle

		 	Name:	 	Thomas Hinkle
		 	Title:	 	Vice President
	
	KENTUCKY HAULING, INC.
		
	By:	 	 /s/ Michael Brady

		 	Name:	 	Michael Brady
		 	Title:	 	Vice President
	
	GLASS AGGREGATES, LLC
		
	By:	 	 /s/ Michael Brady

		 	Name:	 	Michael Brady
		 	Title:	 	Vice President

  
 -28-

 
					
	SOUTH CENTRAL KENTUCKY LIMESTONE, LLC
		
	By:	 	Glass Aggregates, LLC, its sole member
		
	By:	 	 /s/ Michael Brady

		 	Name:	 	Michael Brady
		 	Title:	 	Vice President
	
	KILGORE COMPANIES, LLC
		
	By:	 	 /s/ Michael Brady

		 	Name:	 	Michael Brady
		 	Title:	 	Vice President
	
	ALTAVIEW CONCRETE, LLC
		
	By:	 	 /s/ Anya Fonina

		 	Name:	 	Anya Fonina
		 	Title:	 	Vice President
	
	PEAK CONSTRUCTION MATERIALS, LLC
		
	By:	 	 /s/ Anya Fonina

		 	Name:	 	Anya Fonina
		 	Title:	 	Vice President
	
	PEAK MANAGEMENT, L.C.
		
	By:	 	 /s/ Anya Fonina

		 	Name:	 	Anya Fonina
		 	Title:	 	Vice President
	
	WASATCH CONCRETE PUMPING, LLC
		
	By:	 	 /s/ Anya Fonina

		 	Name:	 	Anya Fonina
		 	Title:	 	Vice President

  
 -29-

 
					
	KILGORE TRUCKING, LLC
		
	By:	 	 /s/ Jason T. Kilgore

		 	Name:	 	Jason T. Kilgore
		 	Title:	 	Manager
	
	KILGORE EQUIPMENT, LLC
		
	By:	 	 /s/ Jason T. Kilgore

		 	Name:	 	Jason T. Kilgore
		 	Title:	 	Manager
	
	WIND RIVER MATERIALS, LLC
		
	By:	 	 /s/ Jason T. Kilgore

		 	Name:	 	Jason T. Kilgore
		 	Title:	 	Manager
	
	CORNEJO & SONS, L.L.C.
		
	By:	 	 /s/ Michael Brady

		 	Name:	 	Michael Brady
		 	Title:	 	Vice President
	
	CORNEJO QUALITY STONE LLC
		
	By:	 	 /s/ Anya Fonina

		 	Name:	 	Anya Fonina
		 	Title:	 	Vice President
	
	AUSTIN MATERIALS, LLC
		
	By:	 	 /s/ Michael Brady

		 	Name:	 	Michael Brady
		 	Title:	 	Vice President

  
 -30-

 
			
	INDUSTRIAL ASPHALT, LLC
		
	By:	 	 /s/ Anya Fonina

		 	Name: Anya Fonina
		 	Title:   Manager
	
	ASPHALT PAVING COMPANY OF AUSTIN, LLC
		
	By:	 	 /s/ Anya Fonina

		 	Name: Anya Fonina
		 	Title:   Manager
	
	KBDJ, L.P.
	
	By: KBDJ Materials, LLC, its general partner
		
	By:	 	 /s/ Anya Fonina

		 	Name: Anya Fonina
		 	Title:   Vice President
	
	KBDJ MATERIALS, LLC
		
	By:	 	 /s/ Anya Fonina

		 	Name: Anya Fonina
		 	Title:   Vice President
	
	RTI HOT MIX, LLC
		
	By:	 	 /s/ Anya Fonina

		 	Name: Anya Fonina
		 	Title:   Vice President

  
 -31-

 
			
	RTI EQUIPMENT CO., LLC
		
	By:	 	 /s/ Anya Fonina

		 	Name: Anya Fonina
		 	Title:   Vice President
	
	J.D. RAMMING PAVING CO., LLC
		
	By:	 	 /s/ Anya Fonina

		 	Name: Anya Fonina
		 	Title:   Vice President
	
	RAMMING TRANSPORATION CO., LLC
		
	By:	 	 /s/ Anya Fonina

		 	Name: Anya Fonina
		 	Title:   Vice President

  
 -32-

 
					
	BANK OF AMERICA, N.A., as Collateral Agent
		
	By:	 	 /s/ Joon Ko

		 	Name:	 	Joon Ko
		 	Title:	 	Vice President

  
 -33-

 Schedule I to 
 the Security Agreement 
 SUBSIDIARY PARTIES 

 

							
	 Current Legal Entities Owned
	 	 Record Owner
	 	 Jurisdiction
	 	 Percent of

Ownership/Interest

	 Summit Materials Holdings I, LLC
	 	Summit Materials, LLC	 	Delaware	 	100%
	 Summit Materials Holdings II, LLC
	 	Summit Materials, LLC	 	Delaware	 	100%
	 Summit Materials Companies I, LLC
	 	Summit Materials Holdings I, LLC	 	Delaware	 	100%
	 Summit Materials Corporations I, Inc.
	 	Summit Materials Companies I, LLC	 	Delaware	 	100%
	 RK Hall, LLC
	 	Summit Materials Companies I, LLC	 	Delaware	 	100%
	 Con-Agg of MO, L.L.C.
	 	Summit Materials Companies I, LLC	 	Missouri	 	100%
	 Hinkle Contracting Company, LLC
	 	Summit Materials Companies I, LLC	 	Kentucky	 	100%
	 Kilgore Companies, LLC
	 	Summit Materials Companies I, LLC	 	Delaware	 	100%
	 Cornejo & Sons, L.L.C.
	 	Summit Materials Companies I, LLC	 	Kansas	 	100%
	 Austin Materials, LLC
	 	Summit Materials Companies I, LLC	 	Delaware	 	100%
	 B & B Resources, Inc.
	 	Summit Materials Corporations I, Inc.	 	Utah	 	100%
	 Elam Construction, Inc.
	 	Summit Materials Corporations I, Inc.	 	Colorado	 	100%
	 Hamm, Inc.
	 	Summit Materials Corporations I, Inc.	 	Kansas	 	100%
	 Salt Lake Valley Sand & Gravel, Inc.
	 	B & B Resources, Inc.	 	Utah	 	100%
	 Valley Ready Mix, Inc.
	 	B & B Resources, Inc.	 	Utah	 	100%
	 Elam Paving, Inc.
	 	Elam Construction, Inc.	 	New Mexico	 	100%
	 Hamm Asphalt, LLC
	 	Hamm, Inc.	 	Kansas	 	100%
	 N. R. Hamm Contractor, LLC
	 	Hamm, Inc.	 	Kansas	 	100%
	 N. R. Hamm Quarry, LLC
	 	Hamm, Inc.	 	Kansas	 	100%
	 R. K. Hall Construction, Ltd.
	 	RK Hall, LLC	 	Texas	 	100%
	 SCS Materials, L.P.
	 	RK Hall, LLC	 	Texas	 	100%
	 B&H Contracting, L.P.
	 	RK Hall, LLC	 	Texas	 	100%
	 RKH Capital, L.L.C.
	 	RK Hall, LLC	 	Texas	 	100%
	 Quarry Properties, L.L.C.
	 	Con-Agg of MO, L.L.C.	 	Missouri	 	100%
	 Fischer Quarries, L.L.C.
	 	Con-Agg of MO, L.L.C.	 	Missouri	 	100%

							
	 Current Legal Entities Owned
	 	 Record Owner
	 	 Jurisdiction
	 	 Percent of

Ownership/Interest

	 Bourbon Limestone Company
	 	Hinkle Contracting Company, LLC	 	Kentucky	 	100%
	 Glass Aggregates, LLC
	 	Hinkle Contracting Company, LLC	 	Kentucky	 	100%
	 Kentucky Hauling, Inc.
	 	Hinkle Contracting Company, LLC	 	Kentucky	 	100%
	 South Central Kentucky Limestone, LLC
	 	Glass Aggregates, LLC	 	Kentucky	 	100%
	 Altaview Concrete, LLC
	 	Kilgore Companies, LLC	 	Utah	 	100%
	 Peak Construction Materials, LLC
	 	Kilgore Companies, LLC	 	Utah	 	100%
	 Peak Management, L.C.
	 	Kilgore Companies, LLC	 	Utah	 	100%
	 Wasatch Concrete Pumping, LLC
	 	Kilgore Companies, LLC	 	Utah	 	100%
	 Kilgore Trucking, LLC
	 	Kilgore Companies, LLC	 	Utah	 	100%
	 Kilgore Equipment, LLC
	 	Kilgore Companies, LLC	 	Utah	 	100%
	 Wind River Materials, LLC
	 	Kilgore Companies, LLC	 	Wyoming	 	100%
	 Cornejo Quality Stone LLC
	 	Cornejo & Sons, L.L.C.	 	Delaware	 	100%
	 Industrial Asphalt, LLC
	 	Austin Materials, LLC	 	Texas	 	100%
	 Asphalt Paving Company of Austin, LLC
	 	Austin Materials, LLC	 	Texas	 	100%
	 KBDJ, L.P.
	 	Austin Materials, LLC	 	Texas	 	100%
	 KBDJ Materials, LLC
	 	Austin Materials, LLC	 	Delaware	 	100%
	 J.D. Ramming Paving Co., LLC
	 	Austin Materials, LLC	 	Texas	 	100%
	 RTI Hot Mix, LLC
	 	Austin Materials, LLC	 	Texas	 	100%
	 RTI Equipment Co., LLC
	 	Austin Materials, LLC	 	Texas	 	100%
	 Ramming Transportation Co., LLC
	 	Austin Materials, LLC	 	Texas	 	100%
	 Continental Cement Company, L.L.C.
	 	Summit Materials Holdings II, LLC	 	Delaware	 	-100% of Class A Units
 -0% of Class B Units

 Schedule II to 
 the Security Agreement 
 PLEDGED EQUITY AND PLEDGED DEBT 

PLEDGED EQUITY 
  

									
	 Issuer
	  	 Record Owner
	  	 Certificate No.
	  	 No. Shares/Interest
	  	 Percent Pledged

	 Summit Materials, LLC
	  	 Summit Materials Intermediate Holdings, LLC
	  	N/A	  	100% of interests	  	100%
	 Summit Materials Holdings I, LLC
	  	 Summit Materials, LLC
	  	N/A	  	100% of interests	  	100%
	 Summit Materials Companies I, LLC
	  	 Summit Materials Holdings I, LLC
	  	N/A	  	100% of interests	  	100%
	 Summit Materials Corporations I, Inc.
	  	 Summit Materials Companies I, LLC
	  	N/A	  	 1,000 shares of

common stock
 (100% of
shares)
	  	100%
	 B & B Resources, Inc.
	  	 Summit Materials Corporations I, Inc.
	  	N/A	  	 50,000 shares of common stock
 (100% of shares)
	  	100%
	 Salt Lake Valley Sand & Gravel, Inc.
	  	 B & B Resources, Inc.
	  	N/A	  	 50,000 shares of common stock
 (100% of shares)
	  	100%
	 Valley Ready Mix, Inc.
	  	 B & B Resources, Inc.
	  	N/A	  	 50,000 shares of

common stock
 (100% of
shares)
	  	100%
	 Elam Construction, Inc.
	  	 Summit Materials Corporations I, Inc.
	  	N/A	  	64,209 shares of common stock	  	100%
	 Elam Paving, Inc.
	  	 Elam Construction, Inc.
	  	N/A	  	 1,000 shares of

common stock
 (100% of
shares)
	  	100%
	 Hamm, Inc.
	  	 Treasury Stock
	  	Retired.	  	 7,047 (Class A

Common Stock)
	  	N/A
	  	 Summit Materials Corporations I, Inc.
	  	27A	  	 81,773 (Class A
 Common
Stock)
	  	100%
	  	 Treasury Stock
	  	Retired.	  	 37,059 (Class B

Common Stock)
	  	N/A
	  	 Summit Materials Corporations I, Inc.
	  	28B	  	 63,120.8011 (Class B

Common Stock)
	  	100%
	  	 ESOP Participants
	  	A-1 (redeemed and cancelled 12/18/09)	  	 4,356.40 shares
 (ESOP
Participants)
	  	N/A
	 Hamm Asphalt, LLC
	  	 Hamm, Inc.
	  	N/A	  	100% of interests	  	100%
	 N. R. Hamm Contractor, LLC
	  	 Hamm, Inc.
	  	N/A	  	100% of interests	  	100%
	 N. R. Hamm Quarry, LLC
	  	 Hamm, Inc.
	  	N/A	  	100% of interests	  	100%
	 RK Hall, LLC
	  	 Summit Materials Companies I, LLC
	  	N/A	  	100% of interests	  	100%
	 R. K. Hall Construction, Ltd.
	  	 RK Hall, LLC
	  	N/A	  	100% of interests	  	100%
	 SCS Materials, L.P.
	  	 RK Hall, LLC
	  	N/A	  	100% of interests	  	100%

									
	 Issuer
	  	 Record Owner
	  	 Certificate No.
	  	 No. Shares/Interest
	  	 Percent Pledged

	 B&H Contracting, L.P.    
	  	 RK Hall, LLC
	  	N/A	  	100% of interests	  	100%
	 RKH Capital, L.L.C.
	  	 RK Hall, LLC
	  	02	  	 1,000 member shares

(100% of interests)
	  	100%
	 Con-Agg of MO, L.L.C.
	  	 Summit Materials Companies I, LLC
	  	N/A	  	100% of interests	  	100%
	 Quarry Properties, L.L.C.
	  	 Con-Agg of MO, L.L.C.
	  	N/A	  	100% of interests	  	100%
	 Fischer Quarries, L.L.C.
	  	 Con-Agg of MO, L.L.C.
	  	N/A	  	100% of interests	  	100%
	 Hinkle Contracting Company, LLC
	  	 Summit Materials Companies I, LLC
	  	N/A	  	100% of interests	  	100%
	 Bourbon Limestone Company
	  	 Hinkle Contracting Company, LLC
	  	R-1	  	100% of interests	  	100%
	 Kentucky Hauling, Inc.
	  	 Hinkle Contracting Company, LLC (f/k/a Hinkle Contracting Corporation)
	  	10	  	100% of interests	  	100%
	 Glass Aggregates, LLC
	  	 Hinkle Contracting Company, LLC
	  	N/A	  	 1000 LLC interests

(100% of interests)
	  	100%
	 South Central Kentucky Limestone, LLC
	  	 Glass Aggregates, LLC
	  	2	  	 100 units

(100% of interests)
	  	100%
	 Ohio Valley Asphalt, LLC
	  	 Hinkle Contracting Company, LLC
	  	N/A	  	80% interest	  	0%
	 Kilgore Companies, LLC
	  	 Summit Materials Companies I, LLC
	  	N/A	  	100% of interests	  	100%
	 Altaview Concrete, LLC
	  	 Kilgore Companies, LLC
	  	N/A	  	100% of interests	  	100%
	 Peak Construction Materials, LLC
	  	 Kilgore Companies, LLC
	  	N/A	  	100% of interests	  	100%
	 Peak Management, L.C.
	  	 Kilgore Companies, LLC
	  	N/A	  	100% of interests	  	100%
	 Wasatch Concrete Pumping, LLC
	  	 Kilgore Companies, LLC
	  	N/A	  	100% of interests	  	100%
	 Kilgore Trucking, LLC
	  	 Kilgore Companies, LLC
	  	N/A	  	100% of interests	  	100%
	 Kilgore Equipment, LLC
	  	 Kilgore Companies, LLC
	  	N/A	  	100% of interests	  	100%
	 Wind River Materials, LLC
	  	 Kilgore Companies, LLC
	  	N/A	  	100% of interests	  	100%
	 Cornejo & Sons, L.L.C.
	  	 Summit Materials Companies I, LLC
	  	N/A	  	 2,000 units

(100% of interests)
	  	100%
	 Cornejo Quality Stone LLC
	  	 Cornejo & Sons, L.L.C.
	  	N/A	  	100% of interests	  	100%
	 Austin Materials, LLC
	  	 Summit Materials Companies I, LLC
	  	N/A	  	100% of interests	  	100%
	 Industrial Asphalt, LLC
	  	 Austin Materials, LLC
	  	N/A	  	100% of interests	  	100%

									
	 Issuer
	  	 Record Owner
	  	 Certificate No.
	  	 No. Shares/Interest
	  	 Percent Pledged

	 Asphalt Paving Company of Austin, LLC    
	  	 Austin Materials, LLC
	  	N/A	  	100% of interests	  	100%
	 KBDJ, L.P.
	  	 Austin Materials, LLC
	  	N/A	  	100% of interests	  	100%
	 KBDJ Materials, LLC
	  	 Austin Materials, LLC
	  	N/A	  	100% of interests	  	100%
	 J.D. Ramming Paving Co., LLC
	  	 Austin Materials, LLC
	  	N/A	  	100% of interests	  	100%
	 RTI Hot Mix, LLC
	  	 Austin Materials, LLC
	  	N/A	  	100% of interests	  	100%
	 RTI Equipment Co., LLC
	  	 Austin Materials, LLC
	  	N/A	  	100% of interests	  	100%
	 Ramming Transportation Co., LLC
	  	 Austin Materials, LLC
	  	N/A	  	100% of interests	  	100%
	 Summit Materials Holdings II, LLC
	  	 Summit Materials, LLC
	  	N/A	  	100% of interests	  	100%
	 Summit Materials Finance Corp.
	  	 Summit Materials, LLC
	  	N/A	  	100% of interests	  	0%
	 Continental Cement Company, L.L.C.
	  	 Summit Materials Holdings II, LLC
	  	N/A	  	 -100% of
 Class A
Units
 -0% of Class B Units
	  	100% of
 Class A Units

	 Green America Recycling, LLC
	  	 Continental Cement Company, L.L.C.
	  	N/A	  	100% of interests	  	0%

 PLEDGED DEBT 
 None. 

 Schedule III to 
 the Security Agreement 
 COMMERCIAL TORT CLAIMS 

None. 

 Exhibit I to the 
 Security Agreement 
 SUPPLEMENT NO.
             dated as of [—], to the Security Agreement (the “Security Agreement”), dated as of January 30, 2012,
among the Grantors identified therein and Bank of America, N.A., as Collateral Agent. 
 A. Reference is made to the Credit
Agreement dated as of January 30, 2012 (as amended, amended and restated, supplemented or otherwise modified from time to time, the “Credit Agreement”), among Summit Materials, LLC, a Delaware corporation (the
“Borrower”), the Guarantors from time to time party thereto, Bank of America, N.A., as Administrative Agent and Collateral Agent, each lender from time to time party thereto (collectively, the “Lenders” and
individually, a “Lender”), Bank of America, N.A., as L/C Issuer and Swing Line Lender, and the other agents named therein. 
 B. Capitalized terms used herein and not otherwise defined herein shall have the meanings assigned to such terms in the Credit Agreement and the Security Agreement. 

C. The Grantors have entered into the Security Agreement in order to induce the Lenders to make Loans and the L/C Issuers to issue
Letters of Credit. Section 6.13 of the Security Agreement provides that additional Subsidiaries of the Borrower may become Grantors under the Security Agreement by execution and delivery of an instrument in the form of this Supplement. The
undersigned (the “New Grantor”) is executing this Supplement in accordance with the requirements of the Credit Agreement to become a Grantor under the Security Agreement in order to induce the Lenders to make additional Loans and
the L/C Issuers to issue additional Letters of Credit and as consideration for Loans previously made and Letters of Credit previously issued. 
 Accordingly, the Collateral Agent and the New Grantor agree as follows: 
 SECTION
1. In accordance with Section 6.13 of the Security Agreement, the New Grantor by its signature below becomes a Grantor under the Security Agreement with the same force and effect as if originally named therein as a Grantor and the New Grantor
hereby (a) agrees to all the terms and provisions of the Security Agreement applicable to it as a Grantor thereunder and (b) represents and warrants that the representations and warranties made by it as a Grantor thereunder are true and
correct on and as of the date hereof. In furtherance of the foregoing, the New Grantor, as security for the payment and performance in full of the Secured Obligations, does hereby create and grant to the Collateral Agent, its successors and assigns,
for the benefit of the Secured Parties, their successors and assigns, a security interest in and lien on all of the New Grantor’s right, title and interest in and to the Collateral (as defined in the Security Agreement) of the New Grantor. Each
reference to a “Grantor” in the Security Agreement shall be deemed to include the New Grantor. The Security Agreement is hereby incorporated herein by reference. 
 SECTION 2. The New Grantor represents and warrants to the Collateral Agent and the other Secured Parties that this Supplement has been duly authorized, executed and delivered by it and constitutes its
legal, valid and binding obligation, enforceable against it in accordance with its terms, except as such enforceability may be limited by Debtor Relief Laws and by general principles of equity. 

SECTION 3. This Supplement may be executed in counterparts (and by different parties hereto on different counterparts), each of which
shall constitute an original, but all of which when taken together shall constitute a single contract. This Supplement shall become effective when the Collateral Agent shall have received a counterpart of this Supplement that bears the signature of
the New Grantor 

 
and the Collateral Agent has executed a counterpart hereof. Delivery of an executed signature page to this Supplement by facsimile transmission or other electronic communication shall be as
effective as delivery of a manually signed counterpart of this Supplement. 
 SECTION 4. The New Grantor hereby represents and
warrants that (a) set forth on Schedule I attached hereto is a true and correct schedule of the information required by Schedules II and III to the Security Agreement applicable to it and its and its’ subsidiaries legal name, jurisdiction
of formation and location of Chief Executive Office and (b) set forth under its signature hereto is the true and correct legal name of the New Grantor, its jurisdiction of formation and the location of its chief executive office. 

SECTION 5. Except as expressly supplemented hereby, the Security Agreement shall remain in full force and effect. 

SECTION 6. THIS SUPPLEMENT SHALL BE GOVERNED BY, AND CONSTRUED IN ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW YORK. 

SECTION 7. If any provision of this Supplement is held to be illegal, invalid or unenforceable, the legality, validity and enforceability
of the remaining provisions of this Supplement shall not be affected or impaired thereby. The invalidity of a provision in a particular jurisdiction shall not invalidate or render unenforceable such provision in any other jurisdiction. 

SECTION 8. All communications and notices hereunder shall be in writing and given as provided in Section 6.01 of the Security
Agreement. 
 SECTION 9. The New Grantor agrees to reimburse the Collateral Agent for its reasonable out-of-pocket expenses in
connection with the execution and delivery of this Supplement, including the reasonable fees, other charges and disbursements of counsel for the Collateral Agent. 
 [Signature pages follow] 

 IN WITNESS WHEREOF, the New Grantor and the Collateral Agent have duly executed this
Supplement to the Security Agreement as of the day and year first above written. 
  

			
	[NAME OF NEW GRANTOR]
		
	By:	 	  

	Name:	 	  

	Title:	 	  

	
	Legal Name:
	Jurisdiction of Formation:
	Location of Chief Executive office:

 
			
	 BANK OF AMERICA, N.A.,
 as Collateral Agent

		
	By:	 	  

	Name:	 	  

	Title:	 	  

 Schedule I 
 to the Supplement No   to the 
 Security Agreement 

• EQUITY INTERESTS 
  

									
	 • Issuer
	  	 • Number of Certificate
	  	 • Registered Owner
	  	 • Number and Class of

Equity Interest
	  	 • Percentage of

Equity Interests

	 •
	  	•	  	•	  	•	  	•
	 •
	  	•	  	•	  	•	  	•
	 •
	  	•	  	•	  	•	  	•

 INSTRUMENTS AND DEBT SECURITIES 

 

							
	 • Issuer
	  	 • Principal Amount
	  	 • Date of Note
	  	 • Maturity Date

	 •
	  	•	  	•	  	•
	 •
	  	•	  	•	  	•

 Exhibit II to the 
 Security Agreement 
 PERFECTION CERTIFICATE 

Reference is hereby made to (i) that certain Security Agreement dated as of January 30, 2012 (as amended, restated,
supplemented or amended and restated from time to time, the “Security Agreement”), between Summit Materials, LLC, a Delaware limited liability company (“Borrower”), the Guarantors party thereto (collectively, the
“Guarantors”) and the Collateral Agent (as hereinafter defined) and (ii) that certain Credit Agreement dated as of January 30, 2012 (as amended, restated, supplemented or amended and restated from time to time, the
“Credit Agreement”) among the Borrower, Summit Materials Intermediate Holdings, LLC, a Delaware limited liability company (“Holdings”), certain other U.S. Subsidiaries of the Borrower, certain other parties thereto
and Bank of America, N.A., as Administrative Agent and Collateral Agent (in such capacity, the “Collateral Agent”). Capitalized terms used but not defined herein have the meanings assigned in the Credit Agreement or the Security
Agreement, as applicable, unless otherwise noted herein. 
 As used herein, the term “Companies” means
Holdings, Borrower and each of the other Guarantors. 
 The undersigned hereby certify to the Collateral Agent as follows:

 1. Names. 
 2. The exact legal name of each Company, as such name appears in its respective certificate of incorporation or any other organizational document, is set forth in Schedule 1(a). Each Company
is (i) the type of entity disclosed next to its name in Schedule 1(a) and (ii) a registered organization except to the extent disclosed in Schedule 1(a). Also set forth in Schedule 1(a) is the
organizational identification number, if any, of each Company that is a registered organization, the Federal Taxpayer Identification Number of each Company and the jurisdiction of formation of each Company. 

3. Set forth in Schedule 1(b) is a list of any other corporate or organizational names each Company has had
in the past five years, together with the date of the relevant change. 
 4. Set forth in Schedule
1(c) is a list of all other names used by each Company, or any other business or organization to which each Company became the successor by merger, consolidation, acquisition, change in form, nature or jurisdiction of organization or
otherwise, on any filings with the Internal Revenue Service, at any time between January 1, 2007 and the date hereof. Except as set forth in Schedule 1(c), no Company has changed its jurisdiction of organization at any time during
the past four months. 
 5. Current Locations. The chief executive office of each Company is located at
the address set forth in Schedule 2. 
 6. Extraordinary Transactions. Except for those
purchases, acquisitions and other transactions described in Schedule 1(c) or Schedule 3, in the past five years, all of the Collateral with a fair market value in excess of $5,000,000 has been originated by the relevant
Company in the ordinary course of business or consists of goods which have been acquired by such Company in the ordinary course of business. 

 7. Schedule of Filings. Attached hereto as
Schedule 4 is a schedule of (i) the appropriate filing offices for the financing statements, (ii) the appropriate filing offices for the filings described in Schedule 8(c) and (iii) the appropriate
filing offices for the Mortgages and fixture filings relating to the Mortgaged Property set forth in Schedule 5. 
 8. Real Property. Attached hereto as Schedule 5A is a list of all real property owned or otherwise held by each Company located in the United States as of the Closing Date. Attached
hereto as Schedule 5B is a list of all (i) fee owned real property with a fair market value in excess of $5.0 million owned by any Loan Party on the Closing Date and (ii) to the extent available, common names, addresses and
uses of each Mortgaged Property. 
 9. Stock Ownership and Other Equity Interests. Attached hereto as
Schedule 6(a) is a true and correct list of each of all of the authorized, and the issued and outstanding, stock, partnership interests, limited liability company membership interests or other equity interest of each Company and its
Subsidiaries and the record and beneficial owners of such stock, partnership interests, membership interests or other equity interests setting forth the percentage of such equity interests pledged under the Security Agreement. Also set forth in
Schedule 6(b) is each equity investment of each Company that represents 50% or less of the equity of the entity in which such investment was made setting forth the percentage of such equity interests pledged under the Security
Agreement. 
 10. Instruments and Tangible Chattel Paper. Attached hereto as Schedule 7 is a
true and correct list of all promissory notes, instruments (other than checks to be deposited in the ordinary course of business), tangible chattel paper, electronic chattel paper and other evidence of indebtedness held by each Company as of the
Closing Date, the value of which is in excess of $2,500,000, including all intercompany notes between or among any two or more Companies or any of their Subsidiaries, stating if such instruments, chattel paper or other evidence of indebtedness is
pledged under the Security Agreement. 
 11. Intellectual Property. (a) Attached hereto as
Schedule 8(a) is a schedule setting forth all of each Company’s Patents and Trademarks (each as defined in the Security Agreement) applied for or registered with the United States Patent and Trademark Office
(“USPTO”) in the name of each Company, including the name of the registered owner or applicant and the registration, application, or publication number, as applicable, of each registered or applied for United States Patent or
Trademark owned by each Company. 
 (b) Attached hereto as Schedule 8(b) is a schedule setting forth all of
each Company’s United States Copyrights (each as defined in the Security Agreement), applied for or registered with the United States Copyright Office (the “USCO”), including the name of the registered owner and the
registration number of each registered or applied for Copyright owned by each Company. 
 (c) Attached hereto as Schedule
8(c) is a schedule setting forth all Patent Licenses, Trademark Licenses and Copyright Licenses (each as defined in the Security Agreement) in which the applicable Company is listed as an exclusive licensee, and where the licensed
intellectual property is applied for or registered with the USPTO or USCO, including the name of the registered owner and the registration, 

  
 -2-

 
application or publication number, as applicable, of each registered or applied for United States Patent, Trademark or Copyright, as the case may be, owned by each licensor along with the date of
execution thereof. 
 9. Commercial Tort Claims. Attached hereto as Schedule 9 is a true and correct list
of all Commercial Tort Claims (as defined in the Security Agreement) in excess of $5,000,000, held by each Company, including a brief description thereof. 
 10. Deposit Accounts, Securities Accounts and Commodity Accounts. No information is provided with respect to the Deposit Accounts, Securities Accounts and/or Commodity Accounts since they are not
required to be subject to Collateral Agent’s control pursuant to the Security Agreement. 
 11. Letter-of-Credit
Rights. Attached hereto as Schedule 11 is a true and correct list of all Letters of Credit issued in favor of each Company, as beneficiary thereunder, stating if letter-of-credit rights with respect to such Letters of Credit are
required to be subject to a control arrangement pursuant to the Security Agreement. 
 [The Remainder of this Page has been
intentionally left blank] 

  
 -3-

 IN WITNESS WHEREOF, we have hereunto signed this Perfection Certificate as of this
            day of January [    ], 2012. 
  

					
	SUMMIT MATERIALS, LLC
		
	By:	 	  

		 	Name:	 	
		 	Title:	 	
	
	SUMMIT MATERIALS INTERMEDIATE HOLDINGS, LLC
		
	By:	 	  

		 	Name:	 	
		 	Title:	 	
	
	[Each of the Guarantors]
		
	By:	 	  

		 	Name:	 	
		 	Title:	 	

  
 -4-

 Schedule 1(a) 

Legal Names, Etc. 
  

											
	 Legal Name
	  	 Type of Entity
	  	 Registered
Organization

(Yes/No)
	  	 Organizational
Number1
	  	 Federal Taxpayer
Identification
Number
	  	 State of Formation

		  		  		  		  		  	
		  		  		  		  		  	
		  		  		  		  		  	

  

	1 	If none, so state. 

  
 -5-

 Schedule 1(b) 

Prior Organizational Names 
  

					
	 Company/Subsidiary
	  	 Prior Name
	  	Date of Change
		  		  	
		  		  	
		  		  	
		  		  	

  
 -6-

 Schedule 1(c) 

Changes in Corporate Identity; Other Names 
  

									
	 Company/Subsidiary
	  	Action	  	Date of
Action	  	State of
Formation	  	 List of All Other Names Used on Any

Filings with the Internal Revenue
 Service During Past Five Years

		  		  		  		  	
		  		  		  		  	
		  		  		  		  	
		  		  		  		  	
		  		  		  		  	
		  		  		  		  	
		  		  		  		  	
		  		  		  		  	
		  		  		  		  	

 [Add Information required by Section 1 to the extent required by Section 1(c) of the Perfection Certificate]

  
 -7-

 Schedule 2 

Chief Executive Offices 
  

							
	 Company/Subsidiary
	  	 Address
	  	 County
	  	 State

		  		  		  	
		  		  		  	
		  		  		  	
		  		  		  	
		  		  		  	
		  		  		  	
		  		  		  	

  
 -8-

 Schedule 3 

Transactions Other Than in the Ordinary Course of Business 

 

					
	 Company/Subsidiary
	  	 Description of Transaction Including Parties
Thereto
	  	 Date of Transaction

		  		  	
		  		  	
		  		  	

  
 -9-

 Schedule 4 

Filings/Filing Offices 
  

							
	 Type of Filing2
	  	 Entity
	  	 Applicable

Collateral Document
 [Mortgage, Security
 Agreement or Other]
	  	 Filing Office

		  		  		  	
		  		  		  	
		  		  		  	
		  		  		  	

  

	2 	UCC-1 financing statement, fixture filing, mortgage, intellectual property filing or other necessary filing. 

  
 -10-

 Schedule 5 

Real Property 

I. Owned Real Property 
  

									
	 Entity of Record
	  	 Purpose/Use
	  	 Legal Description

(if Encumbered by
Mortgage and/or
 Fixture Filing)
	  	 To be Encumbered by
Mortgage and Fixture
Filing
	  	 Option to Purchase/ Right
of First
Refusal

	 [    ]
	  	[    ]	  	[See Schedule A to Mortgage and/or fixture filing encumbering this property.]	  	[YES/NO]	  	[YES/NO]
		  		  		  		  	

  
 -11-

 II. Leased Real Property 

 

													
	 Entity of Record
	  	 Description of
Lease
	  	 Purpose/Use
	  	 Legal Description
(if Encumbered by
Mortgage
and/or
Fixture Filing)
	  	 To be Encumbered
by Mortgage
	  	 To be Encumbered
by Fixture Filing
	  	 Option to
Purchase/
Right of
First
Refusal

	 [    ]
	  	[    ]	  	[    ]	  	[See Schedule A to Mortgage and/or fixture filing encumbering this property.]	  	[YES/NO]	  	[YES/NO]	  	[YES/NO]
		  		  		  		  		  		  	

  
 -12-

 Schedule 6 

(a) Equity Interests of Companies and Subsidiaries 

 

									
	 Current Legal

Entities Owned
	  	 Record Owner
	  	 Certificate No.
	  	 No. Shares/Interest
	  	 Percent Pledged

		  		  		  		  	
		  		  		  		  	
		  		  		  		  	
		  		  		  		  	

 (b) Other Equity Interests 

 

									
	 Current Legal

Entities Owned
	  	 Record Owner
	  	 Certificate No.
	  	 No. Shares/Interest
	  	 Percent Pledged

 Schedule 7 

Instruments and Tangible Chattel Paper 
  

	1.	Promissory Notes: 

  

											
	 Entity
	  	 Principal Amount
	  	 Date of Issuance
	  	 Interest Rate
	  	 Maturity Date
	  	 Pledged

[Yes/No]

		  		  		  		  		  	
		  		  		  		  		  	
		  		  		  		  		  	

  

	2.	Chattel Paper: 

  

			
	 Description
	  	Pledged
[Yes/No]
		  	
		  	
		  	

  
 -2-

 Schedule 8(a) 

Patents and Trademarks 
 UNITED STATES PATENTS: 
 Registrations: 

 

					
	 OWNER
	  	 REGISTRATION

NUMBER
	  	 DESCRIPTION

		  		  	

 Applications: 
  

					
	 OWNER
	  	 APPLICATION

NUMBER
	  	 DESCRIPTION

		  		  	

 UNITED STATES TRADEMARKS: 
 Registrations: 
  

					
	 OWNER
	  	 REGISTRATION

NUMBER
	  	 TRADEMARK

		  		  	

 Applications: 
  

					
	 OWNER
	  	 APPLICATION

NUMBER
	  	 TRADEMARK

		  		  	

  
 -3-

 Schedule 8(b) 

Copyrights 

UNITED STATES COPYRIGHTS 
 Registrations:

  

					
	 OWNER
	  	 TITLE
	  	 REGISTRATION NUMBER

		  		  	

 Applications: 
  

			
	 OWNER
	  	 APPLICATION NUMBER

		  	

  
 -4-

 Schedule 8(c) 

Intellectual Property Licenses 
 Patent Licenses: 
  

									
	 LICENSEE
	  	 LICENSOR
	  	 COUNTRY/STATE
	  	 REGISTRATION/
APPLICATION

NUMBER
	  	 DESCRIPTION

Trademark Licenses 
  

									
	 LICENSEE
	  	 LICENSOR
	  	 COUNTRY/STATE
	  	 REGISTRATION/
APPLICATION

NUMBER
	  	 TRADEMARK

Copyright Licenses: 
  

									
	 LICENSEE
	  	 LICENSOR
	  	 COUNTRY/STATE
	  	 REGISTRATION/
APPLICATION

NUMBER
	  	 DESCRIPTION

  
 -5-

 Schedule 9 

Commercial Tort Claims 
  

			
	 Description
	  	Pledged
[Yes/No]
		  	
		  	
		  	

  
 -6-

 Schedule 11 

Letter of Credit Rights 
  

											
	 Issuer
	  	 Beneficiary
	  	 Principal Amount
	  	 Date of Issuance
	  	 Maturity Date
	  	 Subject to Control
Requirement

[Yes/No]

		  		  		  		  		  	
		  		  		  		  		  	

  
 -7-

 Exhibit III to the 
 Security Agreement 
 FORM OF 

PATENT SECURITY AGREEMENT (SHORT FORM) 
 PATENT SECURITY AGREEMENT 
 Patent Security Agreement, dated
as of [    ], by [    ] and [            ] (the “Grantor”), in favor of BANK OF AMERICA, N.A., in its capacity as collateral agent
pursuant to the Credit Agreement (in such capacity, the “Collateral Agent”). 
 W
I T N E S S
E T H: 
 WHEREAS, the Grantor
is party to a Security Agreement dated as of January 30, 2012 (as amended, amended and restated, supplemented or otherwise modified from time to time, the “Security Agreement”) in favor of the Collateral Agent pursuant to which
the Grantor is required to execute and deliver this Patent Security Agreement; 
 NOW, THEREFORE, in consideration of the
premises and to induce the Collateral Agent, for the benefit of the Secured Parties, to enter into the Credit Agreement, the Grantor hereby agrees with the Collateral Agent as follows: 

SECTION 1. Defined Terms. Unless otherwise defined herein, terms defined in the Security Agreement and used herein have the
meaning given to them in the Security Agreement. 
 SECTION 2. Grant of Security Interest in Patent Collateral. The
Grantor hereby pledges and grants to the Collateral Agent for the benefit of the Secured Parties a lien on and security interest in and to all of its right, title and interest in, to and under all the following Pledged Collateral (excluding any
Excluded Assets) of the Grantor: 
 (a) Patents of the Grantor listed on Schedule I attached hereto. 

SECTION 3. The Security Agreement. The security interest granted pursuant to this Patent Security Agreement is granted in
conjunction with the security interest granted to the Collateral Agent pursuant to the Security Agreement and the Grantor hereby acknowledges and affirms that the rights and remedies of the Collateral Agent with respect to the security interest in
the Patents made and granted hereby are more fully set forth in the Security Agreement. In the event that any provision of this Patent Security Agreement is deemed to conflict with the Security Agreement, the provisions of the Security Agreement
shall control unless the Collateral Agent shall otherwise determine. 
 SECTION 4. Termination. Upon the termination of
the Security Agreement in accordance with Section 6.12 thereof, the Collateral Agent shall, at the expense of the Grantor, execute, acknowledge, and deliver to the Grantor an instrument in writing in recordable form releasing the lien on and
security interest in the Patents under this Patent Security Agreement and any other documents required to evidence the termination of the Collateral Agent’s interest in the Patents. 

SECTION 5. Counterparts. This Patent Security Agreement may be executed in any number of counterparts, all of which shall
constitute one and the same instrument, and any party hereto may execute this Patent Security Agreement by signing and delivering one or more counterparts. 

 [Signature pages follow.] 

  
 -2-

 
			
	[GRANTOR]
		
	By:	 	  

		 	Name:
		 	Title:

  
 -3-

 
			
	BANK OF AMERICA, N.A.,
	as Collateral Agent
		
	By:	 	  

		 	Name:
		 	Title:

  
 -4-

 Schedule I 
 to 
 PATENT SECURITY AGREEMENT 

UNITED STATES PATENTS AND PATENT APPLICATIONS 
 Patents: 
  

					
	 • OWNER
	  	 • PATENT NUMBER
	  	 • TITLE

	 •
	  	•	  	•

 Patent Applications: 
  

					
	 • OWNER
	  	 • APPLICATION NUMBER
	  	 • TITLE

	 •
	  	•	  	•

 Exhibit IV to the 
 Security Agreement 
 FORM OF 

TRADEMARK SECURITY AGREEMENT (SHORT FORM) 
 TRADEMARK SECURITY AGREEMENT 
 Trademark Security Agreement,
dated as of [    ], by [    ] and [                    ] (the “Grantor”), in favor of BANK
OF AMERICA, N.A., in its capacity as collateral agent pursuant to the Credit Agreement (in such capacity, the “Collateral Agent”). 
 W I T N E S S E T H: 
 WHEREAS, the Grantor is party to a Security Agreement dated as of January 30, 2012 (as amended, amended and restated, supplemented or otherwise modified from time to time, the “Security
Agreement”) in favor of the Collateral Agent pursuant to which the Grantor is required to execute and deliver this Trademark Security Agreement; 
 NOW, THEREFORE, in consideration of the premises and to induce the Collateral Agent, for the benefit of the Secured Parties, to enter into the Credit Agreement, the Grantor hereby agrees with the
Collateral Agent as follows: 
 SECTION 1. Defined Terms. Unless otherwise defined herein, terms defined in the Security
Agreement and used herein have the meaning given to them in the Security Agreement. 
 SECTION 2. Grant of Security Interest
in Trademark Collateral. The Grantor hereby pledges and grants to the Collateral Agent for the benefit of the Secured Parties a lien on and security interest in and to all of its right, title and interest in, to and under all the following
Pledged Collateral (excluding any Excluded Assets) of the Grantor: 
 (a) registered Trademarks of the Grantor listed on
Schedule I attached hereto. 
 SECTION 3. The Security Agreement. The security interest granted pursuant to this
Trademark Security Agreement is granted in conjunction with the security interest granted to the Collateral Agent pursuant to the Security Agreement and Grantor hereby acknowledges and affirms that the rights and remedies of the Collateral Agent
with respect to the security interest in the Trademarks made and granted hereby are more fully set forth in the Security Agreement. In the event that any provision of this Trademark Security Agreement is deemed to conflict with the Security
Agreement, the provisions of the Security Agreement shall control unless the Collateral Agent shall otherwise determine. 

SECTION 4. Termination. Upon the termination of the Security Agreement in accordance with Section 6.12 thereof, the
Collateral Agent shall, at the expense of the Grantor, execute, acknowledge, and deliver to the Grantor an instrument in writing in recordable form releasing the lien on and security interest in the Trademarks under this Trademark Security Agreement
and any other documents required to evidence the termination of the Collateral Agent’s interest in the Trademarks. 

 SECTION 5. Counterparts. This Trademark Security Agreement may be executed in any
number of counterparts, all of which shall constitute one and the same instrument, and any party hereto may execute this Trademark Security Agreement by signing and delivering one or more counterparts. 

[Signature pages follow] 

  
 -2-

 
					
	[GRANTOR]
		
	By:	 	  

		 	Name:
		 	Title:

  
 -3-

 
					
	 BANK OF AMERICA, N.A.,
 as Collateral Agent

		
	By:	 	  

		 	 Name:

		 	 Title:

  
 -4-

 Schedule I 
 to 
 TRADEMARK SECURITY AGREEMENT 

UNITED STATES TRADEMARK REGISTRATIONS AND APPLICATIONS 
 Trademark Registrations: 
  

					
	 —

OWNER
	  	 —

REGISTRATION NUMBER
	  	 —

— TRADEMARK

	 —
	  	—	  	—

 Trademark Applications: 
  

					
	 —

OWNER
	  	 —

APPLICATION NUMBER
	  	 —

— TRADEMARK

	 —
	  	—	  	—

 Exhibit V to the 
 Security Agreement 
 FORM OF 

COPYRIGHT SECURITY AGREEMENT (SHORT FORM) 
 COPYRIGHT SECURITY AGREEMENT 
 Copyright Security Agreement,
dated as of [    ], by [    ] and [                    ] (the “Grantor”), in favor of BANK
OF AMERICA, N.A., in its capacity as collateral agent pursuant to the Credit Agreement (in such capacity, the “Collateral Agent”). 
 W I T N E S S E T H: 
 WHEREAS, the Grantor is party to a Security Agreement dated as of January 30, 2012 (as amended, amended and restated, supplemented or otherwise modified from time to time, the “Security
Agreement”) in favor of the Collateral Agent pursuant to which the Grantor is required to execute and deliver this Copyright Security Agreement; 
 NOW, THEREFORE, in consideration of the premises and to induce the Collateral Agent, for the benefit of the Secured Parties, to enter into the Credit Agreement, the Grantor hereby agrees with the
Collateral Agent as follows: 
 SECTION 1. Defined Terms. Unless otherwise defined herein, terms defined in the Security
Agreement and used herein have the meaning given to them in the Security Agreement. 
 SECTION 2. Grant of Security Interest
in Copyright Collateral. The Grantor hereby pledges and grants to the Collateral Agent for the benefit of the Secured Parties a lien on and security interest in and to all of its right, title and interest in, to and under all the following
Pledged Collateral (excluding any Excluded Assets) of the Grantor: 
 (a) registered Copyrights of the Grantor listed on
Schedule I attached hereto. 
 SECTION 3. The Security Agreement. The security interest granted pursuant to this
Copyright Security Agreement is granted in conjunction with the security interest granted to the Collateral Agent pursuant to the Security Agreement and the Grantor hereby acknowledges and affirms that the rights and remedies of the Collateral Agent
with respect to the security interest in the Copyrights made and granted hereby are more fully set forth in the Security Agreement. In the event that any provision of this Copyright Security Agreement is deemed to conflict with the Security
Agreement, the provisions of the Security Agreement shall control unless the Collateral Agent shall otherwise determine. 

SECTION 4. Termination. Upon termination of the Security Agreement in accordance with Section 6.12 thereof, the Collateral
Agent shall, at the expense of the Grantor, execute, acknowledge, and deliver to the Grantor an instrument in writing in recordable form releasing the lien on and security interest in the Copyrights under this Copyright Security Agreement and any
other documents required to evidence the termination of the Collateral Agent’s interest in the Copyrights. 

 SECTION 5. Counterparts. This Copyright Security Agreement may be executed in any
number of counterparts, all of which shall constitute one and the same instrument, and any party hereto may execute this Copyright Security Agreement by signing and delivering one or more counterparts. 

[Signature pages follow.] 

  
 -2-

 
					
	[GRANTOR]
		
	By:	 	  

		 	Name:
		 	Title:

  
 -3-

 
					
	 BANK OF AMERICA, N.A.,
 as Collateral Agent

		
	By:	 	  

		 	Name:
		 	Title:

  
 -4-

 Schedule I 
 to 
 COPYRIGHT SECURITY AGREEMENT 

UNITED STATES COPYRIGHT REGISTRATIONS 
  

					
	 —

OWNER
	  	 —

REGISTRATION NUMBER
	  	 —

COPYRIGHT TITLE

	 —
	  	—	  	—EX-10.5

 Exhibit 10.5 
 EXECUTION COPY 
 EMPLOYMENT AGREEMENT 

(THOMAS HILL) 
 EMPLOYMENT AGREEMENT (the “Agreement”) dated July 30, 2009 by and between Summit Materials Holdings L.P. (the “Company”) and Thomas Hill
(“Executive”). 
 The Company desires to employ Executive and to enter into an agreement embodying the terms of
such employment; 
 Executive desires to accept such employment and enter into such an agreement; 

In consideration of the premises and mutual covenants herein and for other good and valuable consideration, the parties agree as follows:

 1. Term of Employment. Subject to the provisions of Section 6 of this Agreement, Executive shall be employed by
the Company for a period commencing on July 30, 2009 (the “Commencement Date”) and ending on the third anniversary of the Commencement Date (the “Employment Term”) on the terms and subject to the conditions set
forth in this Agreement; provided, however, that (a) commencing with third anniversary of the Commencement Date and on each anniversary thereafter (each an “Extension Date”), the Employment Term shall be automatically
extended for an additional one-year period, unless the Company or Executive provides the other party hereto 60 days prior written notice before the next Extension Date that the Employment Term shall not be so extended and (b) if the Company is
dissolved pursuant to the terms of the LP Agreement (a “Dissolution”), then the Employment Term shall automatically and immediately be terminated and, except as expressly provided in Section 6(d), no Person shall have any
obligation hereunder except to the extent such obligation arose prior to, or directly as a result of, such termination. 
 2.
Position. 
 a. During the Employment Term, Executive shall serve as the Chief Executive Officer of the Company and the
Chief Executive Officer of Summit Materials Holdings GP, Ltd. (the “General Partner”). In such positions, Executive shall have such duties and authority as shall be determined from time to time by the Board of Directors of the
General Partner (the “Board”). Executive shall also serve as a member of the Board so long as he serves in the foregoing capacities, and if requested by the General Partner, as a member of any committees thereof or a member of the
board of directors (and any committees thereof) of any of the Company’s affiliates, in each respect without additional compensation. 
 b. During the Employment Term, Executive will devote Executive’s full business time and best efforts to the performance of Executive’s duties hereunder and will not engage in any other business,
profession or occupation for compensation or otherwise which would conflict or interfere with the rendition of such services either directly or indirectly, without the prior written consent of the Board; provided that nothing herein shall
preclude Executive, subject to the prior approval of the Board, from accepting appointment to or 

 
continuing to serve on any board of directors or trustees of any business corporation or any charitable organization; provided in each case, and in the aggregate, that such activities do
not conflict or interfere with the performance of Executive’s duties hereunder or conflict with Sections 7 and 8. 
 3.
Compensation. 
 a. During the Employment Term, the Company shall pay Executive a base salary at the annual rate of
$300,000, payable in regular installments in accordance with the Company’s usual payment practices. The rate of Executive’s base salary will be reviewed annually by the Board, and may be increased (but not decreased). Executive’s
annual base salary, as in effect from time to time, is hereinafter referred to as the “Base Salary.” 
 b.
Unless and until the Company completes an acquisition (the “Initial Acquisition”) of a company primarily engaged in the U.S. and Canadian aggregates and related downstream product sectors (including, but not limited to, asphalt,
paving, cement, concrete and concrete products), Executive shall not be eligible to earn an annual bonus award (an “Annual Bonus”). With respect to each full or partial fiscal year during the Employment Term following an Initial
Acquisition, Executive shall be eligible to earn an Annual Bonus of up to one-hundred percent (100%) of Executive’s Base Salary (the “Target”) based upon the achievement of performance targets (which may be based on EBITDA
and/or free cash flow targets) established by the Board within the first three months of each fiscal year during the Employment Term; provided, however, the Board, in its sole discretion, may appropriately adjust such performance targets in
any fiscal year to reflect any merger, acquisition or divestiture effected by the Company during such fiscal year. In respect of the fiscal year during which the Initial Acquisition occurs, Executive shall be eligible to earn a pro-rated portion of
the Target Annual Bonus based upon the number of days Executive was employed by the Company during such year after the date of such Initial Acquisition. The Annual Bonus, if any, shall be paid by the Company to Executive during the calendar year
immediately following the year in which it is earned, promptly after the Company receives its audited financial statements with respect to the year in which the Annual Bonus was earned. 

c. Executive and the Company have entered into separate agreements relating to the Company’s grant of equity awards to Executive
and the Executive’s investment in the equity of the Company. 
 4. Employee Benefits. During the Employment Term,
Executive shall be entitled to participate in the Company’s employee benefit plans as in effect from time to time (collectively “Employee Benefits”), on the same basis as those benefits are generally made available to other
senior executives of the Company. 
 5. Business Expenses. During the Employment Term, reasonable business expenses
incurred by Executive in the performance of Executive’s duties hereunder shall be reimbursed by the Company in accordance with Company policies. 
 6. Termination. The Employment Term and Executive’s employment hereunder may be terminated by either party at any time and for any reason; provided that Executive will be

  
 2 

 
required to give the Company at least 60 days advance written notice of any resignation of Executive’s employment. Notwithstanding any other provision of this Agreement, the provisions of
this Section 6 shall exclusively govern Executive’s rights upon termination of employment with the Company and its affiliates. 
 a. By the Company With Cause or By Executive Other Than As a Result of a Constructive Termination; No Initial Acquisition by December 1, 2010. 

(i) The Employment Term and Executive’s employment hereunder may be terminated by the Company with Cause (as defined below) and
shall terminate automatically upon the effective date of Executive’s resignation other than as a result of a Constructive Termination (as defined in Section 6(c)); provided that Executive will be required to give the Company at
least 60 days advance written notice of a resignation other than as a result of a Constructive Termination. 
 (ii) For
purposes of this Agreement, “Cause” shall mean that the Board, based on information then known to the Company or the General Partner, determines in good faith (A) Executive’s willful or grossly negligent continued failure
to substantially perform Executive’s material duties hereunder (other than as a result of total or partial incapacity due to physical or mental illness) for a period of 10 days following written notice by the Company or the General Partner to
Executive of such failure, (B) dishonesty in the performance of Executive’s material duties hereunder, (C) an act or acts on Executive’s part constituting, or plea of guilty or nolo contendere to a crime
constituting, (x) a felony under the laws of the United States or any state thereof or (y) a misdemeanor involving moral turpitude, (D) Executive’s willful malfeasance or willful misconduct in connection with Executive’s
duties hereunder or (E) Executive’s breach, in a material respect, of Sections 7 or 8 of this Agreement that is not cured (to the extent curable) for a period of 10 days following written notice by the Company or the General Partner to
Executive of such breach. 
 (iii) If Executive’s employment is terminated by the Company with Cause, if Executive resigns
other than as a result of a Constructive Termination, or if Executive’s employment terminates for any reason (other than due to death or Disability) after December 1, 2010 if no Initial Acquisition occurs on or before such termination
date, Executive shall be entitled to receive: 
 (A) the Base Salary accrued through the date of termination,
payable in accordance with the Company’s usual payment practices; 
 (B) any Annual Bonus earned, but
unpaid, as of the date of termination for the immediately preceding fiscal year, paid in accordance with Section 3(b) (except to the extent payment is otherwise deferred pursuant to any applicable deferred compensation arrangement with the
Company); 
 (C) reimbursement, within 60 days following submission by Executive to the Company of appropriate
supporting documentation) for any unreimbursed business expenses properly incurred by Executive in accordance with Company policy prior to the date of Executive’s termination; provided that claims for such

  
 3 

 
reimbursement (accompanied by appropriate supporting documentation) are submitted to the Company within 90 days following the date of Executive’s termination of employment; and 

(D) such fully vested and nonforfeitable Employee Benefits, if any, as to which Executive may be entitled under the
employee benefit plans of the Company (the amounts described in clauses (A) through (D) hereof being referred to as the “Accrued Rights”). 
 Following such termination of Executive’s employment by the Company with Cause or resignation by Executive other than as a result of a Constructive Termination, except as set forth in this
Section 6(a)(iii), Executive shall have no further rights to any compensation or any other benefits under this Agreement. 

b. Disability or Death. 
 (i) The Employment Term and Executive’s employment hereunder shall terminate upon Executive’s death and may be terminated by the Company if Executive becomes physically or mentally incapacitated
and is therefore unable for a period of six (6) consecutive months or for an aggregate of nine (9) months in any twenty-four (24) consecutive month period to perform Executive’s duties (such incapacity is hereinafter referred to
as “Disability”). Any question as to the existence of the Disability of Executive as to which Executive and the Company cannot agree shall be determined in writing by a qualified independent physician mutually acceptable to
Executive and the Company. If Executive and the Company cannot agree as to a qualified independent physician, each shall appoint such a physician and those two physicians shall select a third who shall make such determination in writing. The
determination of Disability made in writing to the Company and Executive shall be final and conclusive for all purposes of this Agreement. 
 (ii) Upon termination of Executive’s employment hereunder for either Disability or death, Executive or Executive’s estate (as the case may be) shall be entitled to receive: 

(A) the Accrued Rights; and 
 (B) a pro-rata portion of the Annual Bonus, if any, that Executive would have been entitled to receive pursuant to Section 3(b) hereof in such year based upon the percentage of the fiscal year that
shall have elapsed through the date of Executive’s termination of employment, payable when such Annual Bonus would have otherwise been payable to Executive pursuant to Section 3(b) had Executive’s employment not terminated (the
“Pro-Rata Bonus”). 
 Following Executive’s termination of employment due to death or Disability, except
as set forth in this Section 6(b)(ii), Executive shall have no further rights to any compensation or any other benefits under this Agreement. 

  
 4 

 c. By the Company Without Cause or Resignation by Executive as a result of a
Constructive Termination. 
 (i) The Employment Term and Executive’s employment hereunder may be terminated by the
Company without Cause or by Executive’s resignation as a result of a Constructive Termination. 

(ii) For purposes of this Agreement, a “Constructive Termination” shall mean any of the following,
without the Executive’s prior written consent: (A) a material reduction in the Executive’s Base Salary or Target Annual Bonus; (B) a material diminution of the Executive’s authority, duties or responsibilities; (C) an
acquisition, within five years following the date of this Agreement, by Blackstone Capital Partners (Cayman) V L.P. or any of its subsidiaries (“Blackstone”) of an equity interest of more than $200 million in any entity that engages
in a Competitive Business, other than any such acquisition that is consummated by the Company or any of its subsidiaries; (D) a required relocation of the Executive’s primary place of business by more than fifty (50) miles from its
location as of the Commencement Date; (E) the failure of the Company to pay or cause to be paid Executive’s Base Salary or Annual Bonus, when due hereunder or (F) any material breach by the Company of this Agreement or any agreement
between the Company and the Executive relating to Executive’s compensation (including any equity awards); provided that either of the events described in clauses (A), (B), (D), (E) and (F) of this Section 6(c)(ii) shall
constitute a Constructive Termination only if the Company fails to cure such event within 30 days after receipt from Executive of written notice of the event which constitutes such Constructive Termination; provided, further, that a
“Constructive Termination” shall cease to exist for an event on the 60th day following the later of its occurrence or Executive’s knowledge thereof, unless Executive has given the Company written notice thereof prior to such date. 

(iii) If Executive’s employment is terminated by the Company without Cause (other than by reason of death or Disability) or if
Executive resigns as a result of a Constructive Termination, in each case other than a termination or resignation after December 1, 2010 if no Initial Acquisition occurs on or before such termination date, Executive shall be entitled to
receive: 
 (A) the Accrued Rights; and 

(B) subject to Executive’s continued compliance with the provisions of Sections 7 and 8 and execution, within 30
days after the date of Executive’s termination of employment, and non-revocation of a general release of claims against the Company and its affiliates in a form and substance reasonably satisfactory to the Company, 

(1) continued payment of the Base Salary in accordance with the Company’s normal payroll practices, as in effect on
the date of termination of Executive’s employment, until eighteen months after the date of such termination (twelve months after the date of such termination if Section 7(a)(8) applies); and 

(2) following the Initial Acquisition, an amount equal to one and one-half (1.5) times (one (1) times if
Section 7(a)(8) applies) Executive’s Annual Bonus in respect of the fiscal year immediately 

  
 5 

 
preceding the applicable year of Executive’s termination of employment, except that, if the Executive’s employment is terminated in the fiscal year in which the Initial Acquisition
occurs, such amount shall be in an amount equal to one and one-half (1.5) times (one (1) times if Section 7(a)(8) applies) the Target Annual Bonus, payable in each case in equal monthly installments for eighteen months after the date
of such termination; 
 provided that the aggregate amounts described in this clause (B) shall be reduced by the
present value of any other cash severance or termination benefits payable to Executive under any other plans, programs or arrangements of the Company or its affiliates. 
 Following Executive’s termination of employment by the Company without Cause (other than by reason of Executive’s death or Disability) or by Executive’s resignation as a result of a
Constructive Termination, except as set forth in this Section 6(c)(iii), Executive shall have no further rights to any compensation or any other benefits under this Agreement. 

d. Expiration of Employment Term or Dissolution. In the event (A) Executive elects not to extend the Employment Term
pursuant to Section 1 of this Agreement or (B) of a Dissolution with a Negative Return, unless Executive’s employment is earlier terminated pursuant to paragraphs (a), (b) or (c) of this Section 6, Executive’s
termination of employment hereunder (whether or not Executive continues as an employee of the Company thereafter) shall be deemed to occur on the close of business on the earlier of the effective date of Dissolution or the day immediately preceding
the next scheduled Extension Date, and Executive shall be entitled to receive the Accrued Rights. Following such termination of Executive’s employment hereunder, Executive shall have no further rights to any compensation or any other benefits
under this Agreement. In the event (A) that the Company elects not to extend the Employment Term pursuant to Section 1 of this Agreement or (B) of a Dissolution with a Positive Return, Executive shall be treated as terminated without
Cause effective as of (as applicable) the close of business on the day immediately preceding the next scheduled Extension Date or the effective date of the Dissolution, and shall be entitled to receive the amounts and benefits specified in
Section 6(c)(iii). For purposes hereof, “Positive Return” means the Sponsor shall have received aggregate cash proceeds and the fair market value of property in respect of its Class A-1 Interests in the Company equal to
more than 100% of its aggregate Capital Contributions (as defined in the LP Agreement) in respect of such Class A-1 Interests, and “Negative Return” means that the Sponsor shall have received aggregate cash proceeds and the
fair market value of property in respect of its Class A-1 Interests in the Company of equal to or less than 100% of its aggregate Capital Contributions (as defined in the LP Agreement) in respect of such Class A-1 Interests. Capitalized
terms in the immediately-preceding sentence shall have the same meaning as specified in the Management Interest Subscription Agreement between Executive and the Company, dated as of the date of the Initial Acquisition Closing (as defined in the
Amended and Restated Agreement of Exempted Limited Partnership of the Company dated July 30, 2009). 
 e. Notice of
Termination. Any purported termination of employment by the Company or by Executive (other than due to Executive’s death) shall be communicated by written Notice of Termination to the other party hereto in accordance with Section 10(i)
hereof. For purposes of this Agreement, a “Notice of Termination” shall mean a notice which shall 

  
 6 

 
indicate the specific termination provision in this Agreement relied upon and shall set forth in reasonable detail the facts and circumstances claimed to provide a basis for termination of
employment under the provision so indicated. 
 f. Board/Committee Resignation. Upon termination of Executive’s
employment from the Company for any reason, Executive agrees to resign, as of the date of such termination and to the extent applicable, from the Board (and any committees thereof) and the board of directors (and any committees thereof) of any of
the Company’s affiliates and any positions held at the General Partner. 
 7. Restrictive Covenants. 

a. Executive acknowledges and recognizes the highly competitive nature of the businesses of the Company and its affiliates and
accordingly agrees as follows: 
 (1) During the Employment Term and, for a period of eighteen months following the date
Executive ceases to be employed by the Company (or such shorter time as provided in Section 7(a)(8)) (the “Restricted Period”), Executive will not, whether on Executive’s own behalf or on behalf of or in conjunction with
any person, firm, partnership, joint venture, association, corporation or other business organization, entity or enterprise whatsoever (“Person”), directly or indirectly solicit or assist in soliciting in competition with the
Company, the business of any client or prospective client: 
  

	 	(i)	with whom Executive had personal contact or dealings on behalf of the Company during the one-year period preceding Executive’s termination of employment;

  

	 	(ii)	with whom employees reporting to Executive have had personal contact or dealings on behalf of the Company during the one year immediately preceding the Executive’s
termination of employment; or 

  

	 	(iii)	for whom Executive had direct or indirect responsibility during the one year immediately preceding Executive’s termination of employment. 

(2) During the Restricted Period, Executive will not directly or indirectly: 

 

	 	(i)	engage in any business involved, either directly or indirectly, in (x) the acquisition of companies primarily engaged in the U.S. and Canadian aggregates and
related downstream product sectors (including, but not limited to, asphalt, paving, cement, concrete and concrete products) (any such company, a “Business”) or (y) the operation of any Business (any such business as described
in subclauses (x) or (y), a “Competitive Business”); 

  

	 	(ii)	enter the employ of, or render any services to, any Person (or any division or controlled or controlling affiliate of any Person) who or which engages in a Competitive
Business; 

  
 7 

	 	(iii)	acquire a financial interest in, or otherwise become actively involved with, any Competitive Business, directly or indirectly, as an individual, partner, shareholder,
officer, director, principal, agent, trustee or consultant; or 

  

	 	(iv)	interfere with, or attempt to interfere with, business relationships (whether formed before, on or after the date of this Agreement) between the Company or any of its
affiliates, customers, clients, suppliers, partners, members, investors or acquisition targets. 

 (3)
Notwithstanding anything to the contrary in this Agreement, Executive may, directly or indirectly own, solely as an investment, securities of any Person engaged in a Competitive Business which are publicly traded on a national or regional stock
exchange or on the over-the-counter market if Executive (i) is not a controlling Person of, or a member of a group which controls, such Person and (ii) does not, directly or indirectly, own 5% or more of any class of securities of such
Person. 
 (4) During the Restricted Period, Executive will not, whether on Executive’s own behalf or on behalf of or in
conjunction with any Person, directly or indirectly: 
  

	 	(i)	solicit or encourage any employee of the Company or its affiliates to leave the employment of the Company or its affiliates; or 

 

	 	(ii)	hire any such employee who was employed by the Company or its affiliates as of the date of Executive’s termination of employment with the Company or who left the
employment of the Company or its affiliates coincident with, or within one year prior to or after, the termination of Executive’s employment with the Company. 

(5) During the Restricted Period, Executive will not, directly or indirectly, solicit or encourage to cease to work with the Company or
its affiliates any consultant then under contract with the Company or its affiliates. 
 (6) Executive will not, other than as
required by law or by order of a court or other competent authority, make or publish, or cause any other person to make or publish, any statement that is disparaging or that reflects negatively upon the Company or its affiliates, or that is or
reasonably would be expected to be damaging to the reputation of the Company or its affiliates. 
 (7) If total equity
investments by the Company are less than $200 million, there is a proposed Dissolution, and the Executive is not terminated for Cause and does not resign other than due to a Constructive Termination before the Dissolution is completed (or such
earlier time as determined by the Company), (a) the Restricted Period shall be twelve months following termination of employment with the Company, and (b) the term Competitive Business for purposes hereof shall be limited to operations
within 100 miles of a Company facility. 

  
 8 

 (8) Notwithstanding the above, the covenants in this Section 7(a) shall not apply if
(i) an Initial Acquisition does not occur on or before December 1, 2010 and Executive’s employment terminates prior to an Initial Acquisition, or (ii) Blackstone acquires, within five years following the date of this Agreement,
an equity interest of more than $200 million in any entity that engages in a Competitive Business, other than any such acquisition that is consummated by the Company or its subsidiaries. 

b. It is expressly understood and agreed that although Executive and the Company consider the restrictions contained in this
Section 7 to be reasonable, if a final judicial determination is made by a court of competent jurisdiction that the time or territory or any other restriction contained in this Agreement is an unenforceable restriction against Executive, the
provisions of this Agreement shall not be rendered void but shall be deemed amended to apply as to such maximum time and territory and to such maximum extent as such court may judicially determine or indicate to be enforceable. Alternatively, if any
court of competent jurisdiction finds that any restriction contained in this Agreement is unenforceable, and such restriction cannot be amended so as to make it enforceable, such finding shall not affect the enforceability of any of the other
restrictions contained herein. 
 8. Confidentiality; Intellectual Property. 

a. Confidentiality. 
 (i) Executive will not at any time (whether during or after Executive’s employment with the Company) (x) retain or use for the benefit, purposes or account of Executive or any other Person; or
(y) disclose, divulge, reveal, communicate, share, transfer or provide access to any Person outside the Company (other than its professional advisers who are bound by confidentiality obligations), any non-public, proprietary or confidential
information — including without limitation trade secrets, know-how, research and development, software, databases, inventions, processes, formulae, technology, designs and other intellectual property, information concerning finances,
investments, profits, pricing, costs, products, services, vendors, customers, clients, partners, investors, personnel, compensation, recruiting, training, advertising, sales, marketing, promotions, government and regulatory activities and approvals
— concerning the past, current or future business, activities and operations of the Company, its subsidiaries or affiliates and/or any third party that has disclosed or provided any of same to the Company on a confidential basis
(“Confidential Information”) without the prior written authorization of the Board, except as specifically necessary during the term of the Executive’s employment in order to perform the duties of his or her position and in the
best interests of the Company. 
 (ii) “Confidential Information” shall not include any information that is
(a) generally known to the industry or the public other than as a result of Executive’s breach of this covenant or any breach of other confidentiality obligations by third parties; (b) made legitimately available to Executive by a
third party without breach of any confidentiality obligation; or (c) required by law to be disclosed; provided that Executive shall give prompt written notice to the Company of such requirement, disclose no more information than is so
required, and cooperate with any attempts by the Company to obtain a protective order or similar treatment. 

  
 9 

 (iii) Except as required by law, Executive will not disclose to anyone, other than
Executive’s immediate family and legal or financial advisors, the existence or contents of this Agreement; provided that Executive may disclose to any prospective future employer the provisions of Sections 7 and 8 of this Agreement
provided they agree to maintain the confidentiality of such terms. 
 (iv) Upon termination of Executive’s employment with
the Company for any reason, Executive shall (x) cease and not thereafter commence use of any Confidential Information or intellectual property (including without limitation, any patent, invention, copyright, trade secret, trademark, trade name,
logo, domain name or other source indicator) owned or used by the Company, its subsidiaries or affiliates; (y) immediately destroy, delete, or return to the Company, at the Company’s option, all originals and copies in any form or medium
(including memoranda, books, papers, plans, computer files, letters and other data) in Executive’s possession or control (including any of the foregoing stored or located in Executive’s office, home, laptop or other computer, whether or
not Company property) that contain Confidential Information or otherwise relate to the business of the Company, its affiliates and subsidiaries, except that Executive may retain only those portions of any personal notes, notebooks and diaries that
do not contain any Confidential Information; and (z) notify and fully cooperate with the Company regarding the delivery or destruction of any other Confidential Information of which Executive is or becomes aware. 

b. Intellectual Property. 
 (i) If Executive has created, invented, designed, developed, contributed to or improved any works of authorship, inventions, intellectual property, materials, documents or other work product (including
without limitation, research, reports, software, databases, systems, applications, presentations, textual works, content, or audiovisual materials) (“Works”), either alone or with third parties, prior to Executive’s employment
by the Company, that are relevant to or implicated by such employment (“Prior Works”), Executive hereby grants the Company a perpetual, non-exclusive, royalty-free, worldwide, assignable, sublicensable license under all rights and
intellectual property rights (including rights under patent, industrial property, copyright, trademark, trade secret, unfair competition and related laws) therein for all purposes in connection with the Company’s current and future business.

 (ii) If Executive creates, invents, designs, develops, contributes to or improves any Works, either alone or with third
parties, at any time during Executive’s employment by the Company and within the scope of such employment and/or with the use of any the Company resources (“Company Works”), Executive shall promptly and fully disclose same to
the Company and hereby irrevocably assigns, transfers and conveys, to the maximum extent permitted by applicable law, all rights and intellectual property rights therein (including rights under patent, industrial property, copyright, trademark,
trade secret, unfair competition and related laws) to the Company to the extent ownership of any such rights does not vest originally in the Company. 
 (iii) Executive agrees to keep and maintain adequate and current written records (in the form of notes, sketches, drawings, and any other form or media requested by the Company) of all Company Works. The
records will be available to and remain the sole property and intellectual property of the Company at all times. 

  
 10 

 (iv) Executive shall take all requested actions and execute all requested documents
(including any licenses or assignments required by a government contract) at the Company’s expense (but without further remuneration) to assist the Company in validating, maintaining, protecting, enforcing, perfecting, recording, patenting or
registering any of the Company’s rights in the Prior Works and Company Works. If the Company is unable for any other reason to secure Executive’s signature on any document for this purpose, then Executive hereby irrevocably designates and
appoints the Company and its duly authorized officers and agents as Executive’s agent and attorney in fact, to act for and on Executive’s behalf and stead to execute any documents and to do all other lawfully permitted acts in connection
with the foregoing. 
 (v) Executive shall not improperly use for the benefit of, bring to any premises of, divulge, disclose,
communicate, reveal, transfer or provide access to, or share with the Company any confidential, proprietary or non-public information or intellectual property relating to a former employer or other third party without the prior written permission of
such third party. Executive hereby indemnifies, holds harmless and agrees to defend the Company and its officers, directors, partners, employees, agents and representatives from any breach of the foregoing covenant. Executive shall comply with all
relevant policies and guidelines of the Company, including regarding the protection of confidential information and intellectual property and potential conflicts of interest. Executive acknowledges that the Company may amend any such policies and
guidelines from time to time, and that Executive remains at all times bound by their most current version. 
 (vi) The
provisions of Sections 7, 8 and 9 shall survive the termination of Executive’s employment for any reason. 
 9. Specific
Performance. Executive acknowledges and agrees that the Company’s remedies at law for a breach or threatened breach of any of the provisions of Section 7 or Section 8 would be inadequate and the Company would suffer irreparable
damages as a result of such breach or threatened breach. In recognition of this fact, Executive agrees that, in the event of such a breach or threatened breach, in addition to any remedies at law, the Company, without posting any bond, shall be
entitled to cease making any payments or providing any benefit otherwise required by this Agreement and obtain equitable relief in the form of specific performance, temporary restraining order, temporary or permanent injunction or any other
equitable remedy which may then be available. 
 10. Miscellaneous. 

a. Governing Law. This Agreement shall be governed by and construed in accordance with the laws of the State of New York, without
regard to conflicts of laws principles thereof that would direct the application of the laws of any other jurisdiction. 
 b.
Entire Agreement/Amendments. This Agreement contains the entire understanding of the parties with respect to the employment of Executive by the Company, and supersedes any prior agreements or understandings between the parties relating to the
subject 

  
 11 

 
matter of this Agreement (except that matters relating to the Company’s grant of equity awards to Executive and Executive’s investment in the equity of the Company shall be governed by
the separate agreements relating thereto). There are no restrictions, agreements, promises, warranties, covenants or undertakings between the parties with respect to the subject matter herein other than those expressly set forth herein. This
Agreement may not be altered, modified, or amended except by written instrument signed by the parties hereto. 
 c. No
Waiver. The failure of a party to insist upon strict adherence to any term of this Agreement on any occasion shall not be considered a waiver of such party’s rights or deprive such party of the right thereafter to insist upon strict
adherence to that term or any other term of this Agreement. 
 d. Severability. In the event that any one or more of the
provisions of this Agreement shall be or become invalid, illegal or unenforceable in any respect, the validity, legality and enforceability of the remaining provisions of this Agreement shall not be affected thereby. 

e. Assignment. This Agreement, and all of Executive’s rights and duties hereunder, shall not be assignable or delegable by
Executive. Any purported assignment or delegation by Executive in violation of the foregoing shall be null and void ab initio and of no force and effect. This Agreement may be assigned by the Company to a Person or entity which is an
affiliate or a successor in interest to substantially all of the business operations of the Company. Upon such assignment, the rights and obligations of the Company hereunder shall become the rights and obligations of such affiliate or successor
Person or entity. 
 f. No Mitigation. Executive shall not be obligated to mitigate the amount of severance payments
payable hereunder by seeking other employment, or otherwise, nor shall the amounts payable to Executive hereunder be reduced by compensation earned by Executive by any subsequent employer. 

g. Compliance with IRC Section 409A. Notwithstanding anything herein to the contrary, (i) if at the time of
Executive’s termination of employment with the Company Executive is a “specified employee” as defined in Section 409A of the Internal Revenue Code of 1986, as amended (the “Code”) and the deferral of the
commencement of any payments or benefits otherwise payable hereunder or pursuant to any other agreement with the Company as a result of such termination of employment is necessary in order to prevent any accelerated or additional tax under
Section 409A of the Code, then the Company will defer the commencement of the payment of any such payments or benefits hereunder (without any reduction in such payments or benefits ultimately paid or provided to Executive) until the date that
is six months following Executive’s termination of employment with the Company (or the earliest date as is permitted under Section 409A of the Code without any accelerated or additional tax) and (ii) if any other payments of money or
other benefits due to Executive hereunder could cause the application of an accelerated or additional tax under Section 409A of the Code, such payments or other benefits shall be deferred if deferral will make such payment or other benefits
compliant under Section 409A of the Code, or otherwise such payment or other benefits shall be restructured, to the extent possible, in a manner, determined by the Board, that is reasonably expected not to cause such an accelerated or
additional tax. For purposes of 

  
 12 

 
Section 409A of the Code, each payment made under this Agreement shall be designated as a “separate payment” within the meaning of the Section 409A of the Code, and references
herein to Executive’s “termination of employment” shall refer to Executive’s separation from service with the Company Group within the meaning of Section 409A. To the extent any reimbursements or in-kind benefits due to
Executive under this Agreement constitute “deferred compensation” under Section 409A of the Code, any such reimbursements or in-kind benefits shall be paid to Executive in a manner consistent with Treas. Reg.
Section 1.409A-3(i)(1)(iv). The Company shall consult with Executive in good faith regarding the implementation of the provisions of this Section 10(g); provided that neither the Company nor any of its employees or representatives
shall have any liability to Executive with respect thereto. 
 h. Successors; Binding Agreement. This Agreement shall
inure to the benefit of and be binding upon personal or legal representatives, executors, administrators, successors, heirs, distributees, devisees and legatees. 
 i. Notice. For the purpose of this Agreement, notices and all other communications provided for in this Agreement shall be in writing and shall be deemed to have been duly given when delivered by
hand or overnight courier or three days after it has been mailed by United States registered mail, return receipt requested, postage prepaid, addressed to the respective addresses set forth below in this Agreement, or to such other address as either
party may have furnished to the other in writing in accordance herewith, except that notice of change of address shall be effective only upon receipt. 
 If to the Company: 
 Summit Materials Holdings L.P. 

2900 K Street, NW, #450 
 Harbourside North Tower Building 
 Washington, D.C. 20007 

Attention: Office of General Counsel/Chief Legal Officer 
 with a copy (which shall not constitute notice) to: 
 Silverhawk Capital Partners

 4725 Piedmont Row Drive, Suite 420 
 Charlotte, NC 28210 
 Attention: Ted Gardner 

with a copy (which shall not constitute notice) to: 
 The Blackstone Group L.P. 
 345 Park Avenue 

New York, New York 10154 
 Attention: Neil Simpkins 
 Fax: 212-583-5712 

with a copy (which shall not constitute notice) to: 
 Simpson Thacher & Bartlett LLP 
 425 Lexington Avenue 

  
 13 

 New York, New York 10017 

Telecopy: (212) 455-2502 
 Attention: Gregory Grogan 
 If to Executive: 

To the most recent address of Executive set forth in the personnel records of the Company. 

j. Executive Representation. Executive hereby represents to the Company that the execution and delivery of this Agreement by
Executive and the Company and the performance by Executive of Executive’s duties hereunder shall not constitute a breach of, or otherwise contravene, the terms of any employment agreement or other agreement or policy to which Executive is a
party or otherwise bound. 
 k. Prior Agreements. This Agreement supersedes all prior agreements and understandings
(including verbal agreements) between Executive and the Company and/or its affiliates regarding the terms and conditions of Executive’s employment with the Company and/or its affiliates. 

l. Cooperation. Executive shall provide Executive’s reasonable cooperation in connection with any action or proceeding (or
any appeal from any action or proceeding) which relates to events occurring during Executive’s employment with the Company and its affiliates. This provision shall survive any termination of this Agreement. 

m. Withholding Taxes. The Company may withhold from any amounts payable under this Agreement such Federal, state and local taxes
as may be required to be withheld pursuant to any applicable law or regulation. 
 n. No Recourse. Notwithstanding
anything to the contrary herein, Executive agrees and acknowledges that with respect to any payment, benefit or any other obligation or right under this Agreement, Executive shall have no recourse against The Blackstone Group L.P., Silverhawk
Capital Partners or any of their respective affiliates (other than the Company). 
 o. Counterparts. This Agreement may
be signed in counterparts, each of which shall be an original, with the same effect as if the signatures thereto and hereto were upon the same instrument. 

  
 14 

 IN WITNESS WHEREOF, the parties hereto have duly executed this Agreement as of the day and
year first above written. 
  

									
	SUMMIT MATERIALS HOLDINGS L.P.	 		 	THOMAS HILL
				
	By:	 	 Summit Materials Holdings GP, Ltd.,
 its general partner
	 		 	
				
	By:	 	 /s/ Neil Simpkins
	 		 	 /s/ Thomas Hill

		 	Name:	 	Neil Simpkins	 		 	
		 	Title:	 	Authorized Person	 		 	

 [SIGNATURE PAGE TO TOM HILL EMPLOYMENT AGREEMENT]

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