Common use of Cash Settlement Option Clause in Contracts

Cash Settlement Option. The undersigned Existing Tranche B Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Tranche B Term Loans held by such Existing Tranche B Term Lender repaid on the Fifth Amendment Effective Date and to purchase by assignment Tranche C Term Loans in a like principal amount. By choosing this option, each undersigned Existing Tranche B Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche C Term Loans to such Existing Tranche B Term Lender or to allocate less than 100% of the principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans in Tranche C Term Loans. XXXXXX PERMANENTE GROUP TRUST BY: Xxxxxx Foundation Health Plan, Inc., as named fiduciary By: Ares Management LLC, as portfolio manager By: /s/ Xxx Xxxxxx Name: Xxx Xxxxxx Title: Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Ares Management LLC Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Tranche B Term Loans (“you”), hereby consents to the Fifth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January 31, 2017, by the Third Amendment to First Lien Credit Agreement dated as of January 31, 2017 and by the Fourth Amendment to the First Lien Credit Agreement dated as of August 14, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around February 15, 2018 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Tranche B Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Tranche B Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Existing Tranche B Term Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Tranche B Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Tranche B Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Tranche B Term Loans held by such Existing Tranche B Term Lender for a Tranche C Term Loan in a like principal amount. By choosing this option, each undersigned Existing Tranche B Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Tranche B Term Lender’s Tranche B Term Loans for Tranche C Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans for Tranche C Term Loans, in which case the difference between the current principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans and the allocated principal amount of Tranche C Term Loans will be prepaid on, and subject to the occurrence of, the Fifth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Tranche B Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Tranche B Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Tranche B Term Loans held by such Existing Tranche B Term Lender repaid on the Fifth Amendment Effective Date and to purchase by assignment Tranche C Term Loans in a like principal amount. By choosing this option, each undersigned Existing Tranche B Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche C Term Loans to such Existing Tranche B Term Lender or to allocate less than 100% of the principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans in Tranche C Term Loans. XXXXXX PERMANENTE GROUP TRUST BY: Xxxxxx Foundation Health Plan, Inc., as named fiduciary STATE OF NEW MEXICO STATE INVESTMENT COUNCIL By: Ares Management authority delegated to the New Mexico State Investment Office By: Credit Suisse Asset Management, LLC, as portfolio its investment manager By: /s/ Xxx Xxxxx Xxxxxx Name: Xxx Xxxxx Xxxxxx Title: Authorized Signatory Managing Director If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Ares Management Credit Suisse Asset Management, LLC Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Tranche B Term Loans (“you”), hereby consents to the Fifth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January 31, 2017, by the Third Amendment to First Lien Credit Agreement dated as of January 31, 2017 and by the Fourth Amendment to the First Lien Credit Agreement dated as of August 14, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around February 15, 2018 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Tranche B Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Tranche B Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Existing Tranche B Term Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Tranche B Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x o CASHLESS ROLLOVER OPTION Each undersigned Existing Tranche B Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Tranche B Term Loans held by such Existing Tranche B Term Lender for a Tranche C Term Loan in a like principal amount. By choosing this option, each undersigned Existing Tranche B Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Tranche B Term Lender’s Tranche B Term Loans for Tranche C Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans for Tranche C Term Loans, in which case the difference between the current principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans and the allocated principal amount of Tranche C Term Loans will be prepaid on, and subject to the occurrence of, the Fifth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Tranche B Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Tranche B Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Tranche B Term Loans held by such Existing Tranche B Term Lender repaid on the Fifth Amendment Effective Date and to purchase by assignment Tranche C Term Loans in a like principal amount. By choosing this option, each undersigned Existing Tranche B Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche C Term Loans to such Existing Tranche B Term Lender or to allocate less than 100% of the principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans in Tranche C Term Loans. XXXXXX PERMANENTE GROUP TRUST BY: Xxxxxx Foundation Health PlanXxxxxxxx Park CLO, Inc., as named fiduciary Ltd. By: Ares GSO / Blackstone Debt Funds Management LLCLLC as Collateral Manager to Warehouse Parent, as portfolio manager Ltd. By: /s/ Xxx Xxxxxx Xxxxxxxxx Name: Xxx Xxxxxx Xxxxxxxxx Title: Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Ares Management LLC GSO Capital Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Tranche B Term Loans (“you”), hereby consents to the Fifth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January 31, 2017, by the Third Amendment to First Lien Credit Agreement dated as of January 31, 2017 and by the Fourth Amendment to the First Lien Credit Agreement dated as of August 14, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around February 15, 2018 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Tranche B Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Tranche B Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Existing Tranche B Term Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Tranche B Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x o CASHLESS ROLLOVER OPTION Each undersigned Existing Tranche B Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Tranche B Term Loans held by such Existing Tranche B Term Lender for a Tranche C Term Loan in a like principal amount. By choosing this option, each undersigned Existing Tranche B Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Tranche B Term Lender’s Tranche B Term Loans for Tranche C Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans for Tranche C Term Loans, in which case the difference between the current principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans and the allocated principal amount of Tranche C Term Loans will be prepaid on, and subject to the occurrence of, the Fifth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Tranche B Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Tranche B Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Tranche B Term Loans held by such Existing Tranche B Term Lender repaid on the Fifth Amendment Effective Date and to purchase by assignment Tranche C Term Loans in a like principal amount. By choosing this option, each undersigned Existing Tranche B Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche C Term Loans to such Existing Tranche B Term Lender or to allocate less than 100% of the principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans in Tranche C Term Loans. XXXXXX PERMANENTE GROUP TRUST BYNHIT: Xxxxxx Foundation Health Plan, Inc., as named fiduciary U.S. High Yield Bond Trust By: Ares Management Xxxxxx, Xxxxxx Trust Company, LLC, as portfolio manager . its Trustee By: /s/ Xxx Xxxxxx Xxxx XxXxxxxx Name: Xxx Xxxxxx Xxxx XxXxxxxx Title: Authorized Signatory Vice President, Legal and Compliance Analyst If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Ares Management LLC Xxxxxx Xxxxxx Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Tranche B Term Loans (“you”), hereby consents to the Fifth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January 31, 2017, by the Third Amendment to First Lien Credit Agreement dated as of January 31, 2017 and by the Fourth Amendment to the First Lien Credit Agreement dated as of August 14, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around February 15, 2018 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Tranche B Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Tranche B Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Existing Tranche B Term Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Tranche B Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Tranche B Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Tranche B Term Loans held by such Existing Tranche B Term Lender for a Tranche C Term Loan in a like principal amount. By choosing this option, each undersigned Existing Tranche B Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Tranche B Term Lender’s Tranche B Term Loans for Tranche C Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans for Tranche C Term Loans, in which case the difference between the current principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans and the allocated principal amount of Tranche C Term Loans will be prepaid on, and subject to the occurrence of, the Fifth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Tranche B Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Tranche B Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Tranche B Term Loans held by such Existing Tranche B Term Lender repaid on the Fifth Amendment Effective Date and to purchase by assignment Tranche C Term Loans in a like principal amount. By choosing this option, each undersigned Existing Tranche B Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche C Term Loans to such Existing Tranche B Term Lender or to allocate less than 100% of the principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans in Tranche C Term Loans. XXXXXX PERMANENTE GROUP TRUST BY: Xxxxxx Foundation Health Plan, Inc., as named fiduciary SENIOR SECURED FLOATING RATE LOAN FUND By: Ares Management By: Credit Suisse Asset Management, LLC, as portfolio the Portfolio Manager for Propel Capital Corporation, the manager for Senior Secured Floating Rate Loan Fund By: /s/ Xxx Xxxxx Xxxxxx Name: Xxx Xxxxx Xxxxxx Title: Authorized Signatory Managing Director If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Ares Management Credit Suisse Asset Management, LLC Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Tranche B Term Loans (“you”), hereby consents to the Fifth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January 31, 2017, by the Third Amendment to First Lien Credit Agreement dated as of January 31, 2017 and by the Fourth Amendment to the First Lien Credit Agreement dated as of August 14, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around February 15, 2018 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Tranche B Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Tranche B Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Existing Tranche B Term Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Tranche B Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Tranche B Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Tranche B Term Loans held by such Existing Tranche B Term Lender for a Tranche C Term Loan in a like principal amount. By choosing this option, each undersigned Existing Tranche B Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Tranche B Term Lender’s Tranche B Term Loans for Tranche C Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans for Tranche C Term Loans, in which case the difference between the current principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans and the allocated principal amount of Tranche C Term Loans will be prepaid on, and subject to the occurrence of, the Fifth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Tranche B Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Tranche B Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Tranche B Term Loans held by such Existing Tranche B Term Lender repaid on the Fifth Amendment Effective Date and to purchase by assignment Tranche C Term Loans in a like principal amount. By choosing this option, each undersigned Existing Tranche B Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche C Term Loans to such Existing Tranche B Term Lender or to allocate less than 100% of the principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans in Tranche C Term Loans. XXXXXX PERMANENTE GROUP TRUST BY: Xxxxxx Foundation Health Plan, Inc., as named fiduciary Ares XL CLO Ltd. By: Ares CLO Management II LLC, as portfolio its asset manager By: /s/ Xxx Xxxxxx Name: Xxx Xxxxxx Title: Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Ares Management LLC Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Tranche B Term Loans (“you”), hereby consents to the Fifth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January 31, 2017, by the Third Amendment to First Lien Credit Agreement dated as of January 31, 2017 and by the Fourth Amendment to the First Lien Credit Agreement dated as of August 14, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around February 15, 2018 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Tranche B Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Tranche B Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Existing Tranche B Term Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Tranche B Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Tranche B Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Tranche B Term Loans held by such Existing Tranche B Term Lender for a Tranche C Term Loan in a like principal amount. By choosing this option, each undersigned Existing Tranche B Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Tranche B Term Lender’s Tranche B Term Loans for Tranche C Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans for Tranche C Term Loans, in which case the difference between the current principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans and the allocated principal amount of Tranche C Term Loans will be prepaid on, and subject to the occurrence of, the Fifth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Tranche B Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Tranche B Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Tranche B Term Loans held by such Existing Tranche B Term Lender repaid on the Fifth Amendment Effective Date and to purchase by assignment Tranche C Term Loans in a like principal amount. By choosing this option, each undersigned Existing Tranche B Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche C Term Loans to such Existing Tranche B Term Lender or to allocate less than 100% of the principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans in Tranche C Term Loans. XXXXXX PERMANENTE GROUP TRUST BY: Xxxxxx Foundation Health PlanXxxxxxx Xxxxx Lux Investment Funds for the benefit of Xxxxxxx Sachs High Yield Floating Rate Portfolio (Lux) by Xxxxxxx Xxxxx Asset Management, Inc., L.P. solely as named fiduciary By: Ares Management LLC, its investment advisor and not as portfolio manager principal By: /s/ Xxxxx Xxx Xxxxxx Name: Xxxxx Xxx Xxxxxx Title: Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Ares Management LLC Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Tranche B Term Loans (“you”), hereby consents to the Fifth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January 31, 2017, by the Third Amendment to First Lien Credit Agreement dated as of January 31, 2017 and by the Fourth Amendment to the First Lien Credit Agreement dated as of August 14, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around February 15, 2018 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Tranche B Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Tranche B Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Existing Tranche B Term Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Tranche B Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Tranche B Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Tranche B Term Loans held by such Existing Tranche B Term Lender for a Tranche C Term Loan in a like principal amount. By choosing this option, each undersigned Existing Tranche B Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Tranche B Term Lender’s Tranche B Term Loans for Tranche C Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans for Tranche C Term Loans, in which case the difference between the current principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans and the allocated principal amount of Tranche C Term Loans will be prepaid on, and subject to the occurrence of, the Fifth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Tranche B Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Tranche B Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Tranche B Term Loans held by such Existing Tranche B Term Lender repaid on the Fifth Amendment Effective Date and to purchase by assignment Tranche C Term Loans in a like principal amount. By choosing this option, each undersigned Existing Tranche B Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche C Term Loans to such Existing Tranche B Term Lender or to allocate less than 100% of the principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans in Tranche C Term Loans. XXXXXX PERMANENTE GROUP TRUST BY: Xxxxxx Foundation Health PlanBandera Strategic Credit Partners I, Inc., as named fiduciary LP By: Ares Management LLCHighland Capital Management, as portfolio manager L.P., As Investment Manager By: /s/ Xxx Xxxxxx Xxxxx Name: Xxx Xxxxxx Charter Xxxxx Title: Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Ares Management LLC Highland Capital Management, L.P. (Institutional) Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Tranche B Term Loans (“you”), hereby consents to the Fifth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January 31, 2017, by the Third Amendment to First Lien Credit Agreement dated as of January 31, 2017 and by the Fourth Amendment to the First Lien Credit Agreement dated as of August 14, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around February 15, 2018 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Tranche B Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Tranche B Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Existing Tranche B Term Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Tranche B Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Tranche B Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Tranche B Term Loans held by such Existing Tranche B Term Lender for a Tranche C Term Loan in a like principal amount. By choosing this option, each undersigned Existing Tranche B Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Tranche B Term Lender’s Tranche B Term Loans for Tranche C Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans for Tranche C Term Loans, in which case the difference between the current principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans and the allocated principal amount of Tranche C Term Loans will be prepaid on, and subject to the occurrence of, the Fifth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Tranche B Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Tranche B Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Tranche B Term Loans held by such Existing Tranche B Term Lender repaid on the Fifth Amendment Effective Date and to purchase by assignment Tranche C Term Loans in a like principal amount. By choosing this option, each undersigned Existing Tranche B Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche C Term Loans to such Existing Tranche B Term Lender or to allocate less than 100% of the principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans in Tranche C Term Loans. XXXXXX PERMANENTE GROUP TRUST Ares Senior Loan Trust BY: Xxxxxx Foundation Health PlanAres Senior Loan Trust Management, Inc.L.P., as named fiduciary Its Investment Adviser By: Ares Management Senior Loan Trust Management, LLC, as portfolio manager Its General Partner By: /s/ Xxx Xxxxxx Name: Xxx Xxxxxx Title: Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Ares Management LLC Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Tranche B Term Loans (“you”), hereby consents to the Fifth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January 31, 2017, by the Third Amendment to First Lien Credit Agreement dated as of January 31, 2017 and by the Fourth Amendment to the First Lien Credit Agreement dated as of August 14, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around February 15, 2018 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Tranche B Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Tranche B Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Existing Tranche B Term Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Tranche B Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Tranche B Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Tranche B Term Loans held by such Existing Tranche B Term Lender for a Tranche C Term Loan in a like principal amount. By choosing this option, each undersigned Existing Tranche B Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Tranche B Term Lender’s Tranche B Term Loans for Tranche C Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans for Tranche C Term Loans, in which case the difference between the current principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans and the allocated principal amount of Tranche C Term Loans will be prepaid on, and subject to the occurrence of, the Fifth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Tranche B Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Tranche B Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Tranche B Term Loans held by such Existing Tranche B Term Lender repaid on the Fifth Amendment Effective Date and to purchase by assignment Tranche C Term Loans in a like principal amount. By choosing this option, each undersigned Existing Tranche B Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche C Term Loans to such Existing Tranche B Term Lender or to allocate less than 100% of the principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans in Tranche C Term Loans. XXXXXX PERMANENTE GROUP TRUST BY: Xxxxxx Foundation Health Plan, Inc., as named fiduciary AUSTRALIANSUPER By: Ares Management Credit Suisse Asset Management, LLC, as portfolio sub-advisor to Xxxxxxx Asset Management Pty Ltd. in its capacity as agent of and investment manager for AustralianSuper Pty Ltd. in its capacity as trustee of AustralianSuper By: /s/ Xxx Xxxxx Xxxxxx Name: Xxx Xxxxx Xxxxxx Title: Authorized Signatory Managing Director If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Ares Management Credit Suisse Asset Management, LLC Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Tranche B Term Loans (“you”), hereby consents to the Fifth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January 31, 2017, by the Third Amendment to First Lien Credit Agreement dated as of January 31, 2017 and by the Fourth Amendment to the First Lien Credit Agreement dated as of August 14, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around February 15, 2018 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Tranche B Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Tranche B Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Existing Tranche B Term Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Tranche B Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Tranche B Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Tranche B Term Loans held by such Existing Tranche B Term Lender for a Tranche C Term Loan in a like principal amount. By choosing this option, each undersigned Existing Tranche B Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Tranche B Term Lender’s Tranche B Term Loans for Tranche C Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans for Tranche C Term Loans, in which case the difference between the current principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans and the allocated principal amount of Tranche C Term Loans will be prepaid on, and subject to the occurrence of, the Fifth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Tranche B Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Tranche B Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Tranche B Term Loans held by such Existing Tranche B Term Lender repaid on the Fifth Amendment Effective Date and to purchase by assignment Tranche C Term Loans in a like principal amount. By choosing this option, each undersigned Existing Tranche B Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche C Term Loans to such Existing Tranche B Term Lender or to allocate less than 100% of the principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans in Tranche C Term Loans. XXXXXX PERMANENTE GROUP TRUST BYXxxxxxx Syndicated Loan Fund By: Xxxxxx Foundation Health PlanCredit Suisse Asset Management, Inc.LLC., as named fiduciary By: Ares Management LLCAgent (Sub Advisor) for Challenger Investment Services Limited, as portfolio manager the Responsible Entity for Xxxxxxx Syndicated Loan Fund By: /s/ Xxx Xxxxx Xxxxxx Name: Xxx Xxxxx Xxxxxx Title: Authorized Signatory Managing Director If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Ares Management Credit Suisse Asset Management, LLC Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Tranche B Term Loans (“you”), hereby consents to the Fifth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January 31, 2017, by the Third Amendment to First Lien Credit Agreement dated as of January 31, 2017 and by the Fourth Amendment to the First Lien Credit Agreement dated as of August 14, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around February 15, 2018 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Tranche B Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Tranche B Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Existing Tranche B Term Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Tranche B Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Tranche B Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Tranche B Term Loans held by such Existing Tranche B Term Lender for a Tranche C Term Loan in a like principal amount. By choosing this option, each undersigned Existing Tranche B Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Tranche B Term Lender’s Tranche B Term Loans for Tranche C Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans for Tranche C Term Loans, in which case the difference between the current principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans and the allocated principal amount of Tranche C Term Loans will be prepaid on, and subject to the occurrence of, the Fifth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Tranche B Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Tranche B Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Tranche B Term Loans held by such Existing Tranche B Term Lender repaid on the Fifth Amendment Effective Date and to purchase by assignment Tranche C Term Loans in a like principal amount. By choosing this option, each undersigned Existing Tranche B Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche C Term Loans to such Existing Tranche B Term Lender or to allocate less than 100% of the principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans in Tranche C Term Loans. XXXXXX PERMANENTE GROUP TRUST BY: Xxxxxx Foundation Health Plan, Inc., as named fiduciary ATRIUM IX By: Ares Management Credit Suisse Asset Management, LLC, as portfolio manager By: /s/ Xxx Xxxxx Xxxxxx Name: Xxx Xxxxx Xxxxxx Title: Authorized Signatory Managing Director If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Ares Management Credit Suisse Asset Management, LLC Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Tranche B Term Loans (“you”), hereby consents to the Fifth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January 31, 2017, by the Third Amendment to First Lien Credit Agreement dated as of January 31, 2017 and by the Fourth Amendment to the First Lien Credit Agreement dated as of August 14, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around February 15, 2018 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Tranche B Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Tranche B Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Existing Tranche B Term Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Tranche B Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Tranche B Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Tranche B Term Loans held by such Existing Tranche B Term Lender for a Tranche C Term Loan in a like principal amount. By choosing this option, each undersigned Existing Tranche B Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Tranche B Term Lender’s Tranche B Term Loans for Tranche C Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans for Tranche C Term Loans, in which case the difference between the current principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans and the allocated principal amount of Tranche C Term Loans will be prepaid on, and subject to the occurrence of, the Fifth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Tranche B Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Tranche B Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Tranche B Term Loans held by such Existing Tranche B Term Lender repaid on the Fifth Amendment Effective Date and to purchase by assignment Tranche C Term Loans in a like principal amount. By choosing this option, each undersigned Existing Tranche B Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche C Term Loans to such Existing Tranche B Term Lender or to allocate less than 100% of the principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans in Tranche C Term Loans. XXXXXX PERMANENTE GROUP TRUST BYLeveraged Loan (JPY hedged) fund a Series Trust of Cayman World Invest Trust By: Xxxxxx Foundation Health PlanPGIM, Inc., as named fiduciary By: Ares Management LLC, as portfolio manager Investment Manager By: /s/ Xxx Xxxxxx Xxxxx Xxxxxxx Name: Xxx Xxxxxx Xxxxx Xxxxxxx Title: Authorized Signatory Vice President If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Ares Management LLC PGIM, Inc. Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Tranche B Term Loans (“you”), hereby consents to the Fifth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January 31, 2017, by the Third Amendment to First Lien Credit Agreement dated as of January 31, 2017 and by the Fourth Amendment to the First Lien Credit Agreement dated as of August 14, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around February 15, 2018 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Tranche B Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Tranche B Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Existing Tranche B Term Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Tranche B Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Tranche B Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Tranche B Term Loans held by such Existing Tranche B Term Lender for a Tranche C Term Loan in a like principal amount. By choosing this option, each undersigned Existing Tranche B Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Tranche B Term Lender’s Tranche B Term Loans for Tranche C Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans for Tranche C Term Loans, in which case the difference between the current principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans and the allocated principal amount of Tranche C Term Loans will be prepaid on, and subject to the occurrence of, the Fifth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Tranche B Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Tranche B Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Tranche B Term Loans held by such Existing Tranche B Term Lender repaid on the Fifth Amendment Effective Date and to purchase by assignment Tranche C Term Loans in a like principal amount. By choosing this option, each undersigned Existing Tranche B Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche C Term Loans to such Existing Tranche B Term Lender or to allocate less than 100% of the principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans in Tranche C Term Loans. XXXXXX PERMANENTE GROUP TRUST BYAres XXXI CLO Ltd. By: Xxxxxx Foundation Health PlanAres CLO Management XXXI, Inc.L.P., as named fiduciary its Portfolio Manager By: Ares Management LLC, as portfolio manager its General Partner By: /s/ Xxx Xxxxxx Name: Xxx Xxxxxx Title: Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Ares Management LLC Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Tranche B Term Loans (“you”), hereby consents to the Fifth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January 31, 2017, by the Third Amendment to First Lien Credit Agreement dated as of January 31, 2017 and by the Fourth Amendment to the First Lien Credit Agreement dated as of August 14, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around February 15, 2018 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Tranche B Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Tranche B Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Existing Tranche B Term Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Tranche B Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Tranche B Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Tranche B Term Loans held by such Existing Tranche B Term Lender for a Tranche C Term Loan in a like principal amount. By choosing this option, each undersigned Existing Tranche B Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Tranche B Term Lender’s Tranche B Term Loans for Tranche C Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans for Tranche C Term Loans, in which case the difference between the current principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans and the allocated principal amount of Tranche C Term Loans will be prepaid on, and subject to the occurrence of, the Fifth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Tranche B Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Tranche B Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Tranche B Term Loans held by such Existing Tranche B Term Lender repaid on the Fifth Amendment Effective Date and to purchase by assignment Tranche C Term Loans in a like principal amount. By choosing this option, each undersigned Existing Tranche B Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche C Term Loans to such Existing Tranche B Term Lender or to allocate less than 100% of the principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans in Tranche C Term Loans. XXXXXX PERMANENTE GROUP TRUST BYPrudential Bank Loan Fund of the Prudential Trust Company Collective Trust By: Xxxxxx Foundation Health PlanPGIM, Inc., as named fiduciary By: Ares Management LLC, as portfolio manager investment advisor By: /s/ Xxx Xxxxxx Xxxxx Xxxxxxx Name: Xxx Xxxxxx Xxxxx Xxxxxxx Title: Authorized Signatory Vice President If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Ares Management LLC PGIM, Inc. Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Tranche B Term Loans (“you”), hereby consents to the Fifth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January 31, 2017, by the Third Amendment to First Lien Credit Agreement dated as of January 31, 2017 and by the Fourth Amendment to the First Lien Credit Agreement dated as of August 14, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around February 15, 2018 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Tranche B Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Tranche B Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Existing Tranche B Term Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Tranche B Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Tranche B Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Tranche B Term Loans held by such Existing Tranche B Term Lender for a Tranche C Term Loan in a like principal amount. By choosing this option, each undersigned Existing Tranche B Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Tranche B Term Lender’s Tranche B Term Loans for Tranche C Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans for Tranche C Term Loans, in which case the difference between the current principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans and the allocated principal amount of Tranche C Term Loans will be prepaid on, and subject to the occurrence of, the Fifth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Tranche B Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Tranche B Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Tranche B Term Loans held by such Existing Tranche B Term Lender repaid on the Fifth Amendment Effective Date and to purchase by assignment Tranche C Term Loans in a like principal amount. By choosing this option, each undersigned Existing Tranche B Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche C Term Loans to such Existing Tranche B Term Lender or to allocate less than 100% of the principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans in Tranche C Term Loans. XXXXXX PERMANENTE GROUP TRUST Lloyds Banking Group Pensions Trustees Limited as trustee of Lloyds Bank Pension Scheme No. 2 BY: Xxxxxx Foundation Health Plan, Inc., as named fiduciary By: Ares Management LLCLimited, as portfolio manager its Investment Manager By: /s/ Xxx Xxxxxx Name: Xxx Xxxxxx Title: Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Ares Management LLC Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Tranche B Term Loans (“you”), hereby consents to the Fifth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January 31, 2017, by the Third Amendment to First Lien Credit Agreement dated as of January 31, 2017 and by the Fourth Amendment to the First Lien Credit Agreement dated as of August 14, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around February 15, 2018 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Tranche B Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Tranche B Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Existing Tranche B Term Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Tranche B Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Tranche B Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Tranche B Term Loans held by such Existing Tranche B Term Lender for a Tranche C Term Loan in a like principal amount. By choosing this option, each undersigned Existing Tranche B Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Tranche B Term Lender’s Tranche B Term Loans for Tranche C Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans for Tranche C Term Loans, in which case the difference between the current principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans and the allocated principal amount of Tranche C Term Loans will be prepaid on, and subject to the occurrence of, the Fifth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Tranche B Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Tranche B Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Tranche B Term Loans held by such Existing Tranche B Term Lender repaid on the Fifth Amendment Effective Date and to purchase by assignment Tranche C Term Loans in a like principal amount. By choosing this option, each undersigned Existing Tranche B Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche C Term Loans to such Existing Tranche B Term Lender or to allocate less than 100% of the principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans in Tranche C Term Loans. XXXXXX PERMANENTE GROUP SEI INSTITUTIONAL MANAGED TRUST - ENHANCED INCOME FUND BY: Xxxxxx Foundation Health Plan, Inc., as named fiduciary By: Ares Management ARES MANAGEMENT LLC, as portfolio manager AS SUB- ADVISER By: /s/ Xxx Xxxxxx Name: Xxx Xxxxxx Title: Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Ares Management LLC Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Tranche B Term Loans (“you”), hereby consents to the Fifth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January 31, 2017, by the Third Amendment to First Lien Credit Agreement dated as of January 31, 2017 and by the Fourth Amendment to the First Lien Credit Agreement dated as of August 14, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around February 15, 2018 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Tranche B Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Tranche B Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Existing Tranche B Term Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Tranche B Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Tranche B Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Tranche B Term Loans held by such Existing Tranche B Term Lender for a Tranche C Term Loan in a like principal amount. By choosing this option, each undersigned Existing Tranche B Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Tranche B Term Lender’s Tranche B Term Loans for Tranche C Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans for Tranche C Term Loans, in which case the difference between the current principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans and the allocated principal amount of Tranche C Term Loans will be prepaid on, and subject to the occurrence of, the Fifth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Tranche B Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Tranche B Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Tranche B Term Loans held by such Existing Tranche B Term Lender repaid on the Fifth Amendment Effective Date and to purchase by assignment Tranche C Term Loans in a like principal amount. By choosing this option, each undersigned Existing Tranche B Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche C Term Loans to such Existing Tranche B Term Lender or to allocate less than 100% of the principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans in Tranche C Term Loans. XXXXXX PERMANENTE GROUP TRUST BY: Xxxxxx Foundation Health Plan, Inc., as named fiduciary ARES XXVIII CLO LTD. By: Ares CLO Management XXVIII, L.P., its Asset Manager By: Ares CLO GP XXVIII, LLC, as portfolio manager its General Partner By: /s/ Xxx Xxxxxx Name: Xxx Xxxxxx Title: Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Ares Management LLC Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Tranche B Term Loans (“you”), hereby consents to the Fifth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January 31, 2017, by the Third Amendment to First Lien Credit Agreement dated as of January 31, 2017 and by the Fourth Amendment to the First Lien Credit Agreement dated as of August 14, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around February 15, 2018 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Tranche B Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Tranche B Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Existing Tranche B Term Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Tranche B Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Tranche B Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Tranche B Term Loans held by such Existing Tranche B Term Lender for a Tranche C Term Loan in a like principal amount. By choosing this option, each undersigned Existing Tranche B Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Tranche B Term Lender’s Tranche B Term Loans for Tranche C Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans for Tranche C Term Loans, in which case the difference between the current principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans and the allocated principal amount of Tranche C Term Loans will be prepaid on, and subject to the occurrence of, the Fifth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Tranche B Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Tranche B Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Tranche B Term Loans held by such Existing Tranche B Term Lender repaid on the Fifth Amendment Effective Date and to purchase by assignment Tranche C Term Loans in a like principal amount. By choosing this option, each undersigned Existing Tranche B Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche C Term Loans to such Existing Tranche B Term Lender or to allocate less than 100% of the principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans in Tranche C Term Loans. XXXXXX PERMANENTE GROUP WESPATH FUNDS TRUST BYBy: Xxxxxx Foundation Health PlanCredit Suisse Asset Management, LLC, the investment adviser for UMC Benefit Board, Inc., as named fiduciary By: Ares Management LLC, as portfolio manager the trustee for Wespath Funds Trust By: /s/ Xxx Xxxxx Xxxxxx Name: Xxx Xxxxx Xxxxxx Title: Authorized Signatory Managing Director If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Ares Management Credit Suisse Asset Management, LLC Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Tranche B Term Loans (“you”), hereby consents to the Fifth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January 31, 2017, by the Third Amendment to First Lien Credit Agreement dated as of January 31, 2017 and by the Fourth Amendment to the First Lien Credit Agreement dated as of August 14, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around February 15, 2018 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Tranche B Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Tranche B Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Existing Tranche B Term Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Tranche B Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Tranche B Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Tranche B Term Loans held by such Existing Tranche B Term Lender for a Tranche C Term Loan in a like principal amount. By choosing this option, each undersigned Existing Tranche B Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Tranche B Term Lender’s Tranche B Term Loans for Tranche C Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans for Tranche C Term Loans, in which case the difference between the current principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans and the allocated principal amount of Tranche C Term Loans will be prepaid on, and subject to the occurrence of, the Fifth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Tranche B Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Tranche B Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Tranche B Term Loans held by such Existing Tranche B Term Lender repaid on the Fifth Amendment Effective Date and to purchase by assignment Tranche C Term Loans in a like principal amount. By choosing this option, each undersigned Existing Tranche B Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche C Term Loans to such Existing Tranche B Term Lender or to allocate less than 100% of the principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans in Tranche C Term Loans. XXXXXX PERMANENTE GROUP TRUST BY: Xxxxxx Foundation Health Plan, Inc., as named fiduciary COMMONWEALTH OF PENNSYLVANIA TREASURY DEPARTMENT By: Ares Management Credit Suisse Asset Management, LLC, as portfolio manager investment adviser By: /s/ Xxx Xxxxx Xxxxxx Name: Xxx Xxxxx Xxxxxx Title: Authorized Signatory Managing Director If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Ares Management Credit Suisse Asset Management, LLC Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Tranche B Term Loans (“you”), hereby consents to the Fifth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January 31, 2017, by the Third Amendment to First Lien Credit Agreement dated as of January 31, 2017 and by the Fourth Amendment to the First Lien Credit Agreement dated as of August 14, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around February 15, 2018 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Tranche B Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Tranche B Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Existing Tranche B Term Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Tranche B Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Tranche B Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Tranche B Term Loans held by such Existing Tranche B Term Lender for a Tranche C Term Loan in a like principal amount. By choosing this option, each undersigned Existing Tranche B Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Tranche B Term Lender’s Tranche B Term Loans for Tranche C Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans for Tranche C Term Loans, in which case the difference between the current principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans and the allocated principal amount of Tranche C Term Loans will be prepaid on, and subject to the occurrence of, the Fifth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Tranche B Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Tranche B Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Tranche B Term Loans held by such Existing Tranche B Term Lender repaid on the Fifth Amendment Effective Date and to purchase by assignment Tranche C Term Loans in a like principal amount. By choosing this option, each undersigned Existing Tranche B Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche C Term Loans to such Existing Tranche B Term Lender or to allocate less than 100% of the principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans in Tranche C Term Loans. XXXXXX PERMANENTE GROUP TRUST BYNHIT: Senior Floating Rate and Fixed Income Trust By: Xxxxxx Foundation Health PlanXxxxxx Trust Company, Inc., as named fiduciary By: Ares Management LLC, as portfolio manager its Trustee By: /s/ Xxx Xxxxxx Xxxx XxXxxxxx Name: Xxx Xxxxxx Xxxx XxXxxxxx Title: Authorized Signatory Vice President, Legal and Compliance Analyst If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Ares Management LLC Xxxxxx Xxxxxx Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Tranche B Term Loans (“you”), hereby consents to the Fifth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January 31, 2017, by the Third Amendment to First Lien Credit Agreement dated as of January 31, 2017 and by the Fourth Amendment to the First Lien Credit Agreement dated as of August 14, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around February 15, 2018 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Tranche B Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Tranche B Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Existing Tranche B Term Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Tranche B Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x o CASHLESS ROLLOVER OPTION Each undersigned Existing Tranche B Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Tranche B Term Loans held by such Existing Tranche B Term Lender for a Tranche C Term Loan in a like principal amount. By choosing this option, each undersigned Existing Tranche B Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Tranche B Term Lender’s Tranche B Term Loans for Tranche C Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans for Tranche C Term Loans, in which case the difference between the current principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans and the allocated principal amount of Tranche C Term Loans will be prepaid on, and subject to the occurrence of, the Fifth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Tranche B Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Tranche B Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Tranche B Term Loans held by such Existing Tranche B Term Lender repaid on the Fifth Amendment Effective Date and to purchase by assignment Tranche C Term Loans in a like principal amount. By choosing this option, each undersigned Existing Tranche B Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche C Term Loans to such Existing Tranche B Term Lender or to allocate less than 100% of the principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans in Tranche C Term Loans. XXXXXX PERMANENTE GROUP TRUST BY: Xxxxxx Foundation Health PlanGrippen Park CLO, Inc., as named fiduciary Ltd. By: Ares GSO / Blackstone Debt Funds Management LLCLLC as Collateral Manager to Warehouse Parent, as portfolio manager Ltd. By: /s/ Xxx Xxxxxx Xxxxxxxxx Name: Xxx Xxxxxx Xxxxxxxxx Title: Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Ares Management LLC GSO Capital Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Tranche B Term Loans (“you”), hereby consents to the Fifth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January 31, 2017, by the Third Amendment to First Lien Credit Agreement dated as of January 31, 2017 and by the Fourth Amendment to the First Lien Credit Agreement dated as of August 14, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around February 15, 2018 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Tranche B Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Tranche B Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Existing Tranche B Term Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Tranche B Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Tranche B Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Tranche B Term Loans held by such Existing Tranche B Term Lender for a Tranche C Term Loan in a like principal amount. By choosing this option, each undersigned Existing Tranche B Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Tranche B Term Lender’s Tranche B Term Loans for Tranche C Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans for Tranche C Term Loans, in which case the difference between the current principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans and the allocated principal amount of Tranche C Term Loans will be prepaid on, and subject to the occurrence of, the Fifth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Tranche B Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Tranche B Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Tranche B Term Loans held by such Existing Tranche B Term Lender repaid on the Fifth Amendment Effective Date and to purchase by assignment Tranche C Term Loans in a like principal amount. By choosing this option, each undersigned Existing Tranche B Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche C Term Loans to such Existing Tranche B Term Lender or to allocate less than 100% of the principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans in Tranche C Term Loans. XXXXXX PERMANENTE GROUP TRUST BY: Xxxxxx Foundation Health PlanXXXX CLO 6, Inc.Limited By Xxxx Leveraged Loan Master Manager, as named fiduciary By: Ares Management LLC, as portfolio LLC its collateral manager By: Xxxx Group, LLC, its sole member By: /s/ Xxx Xxxxxxx Xxxxxx Name: Xxx Xxxxxxx Xxxxxx Title: Authorized Signatory Managing Director If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Ares Management XXXX Group, LLC Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Tranche B Term Loans (“you”), hereby consents to the Fifth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January 31, 2017, by the Third Amendment to First Lien Credit Agreement dated as of January 31, 2017 and by the Fourth Amendment to the First Lien Credit Agreement dated as of August 14, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around February 15, 2018 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Tranche B Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Tranche B Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Existing Tranche B Term Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Tranche B Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Tranche B Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Tranche B Term Loans held by such Existing Tranche B Term Lender for a Tranche C Term Loan in a like principal amount. By choosing this option, each undersigned Existing Tranche B Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Tranche B Term Lender’s Tranche B Term Loans for Tranche C Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans for Tranche C Term Loans, in which case the difference between the current principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans and the allocated principal amount of Tranche C Term Loans will be prepaid on, and subject to the occurrence of, the Fifth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Tranche B Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Tranche B Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Tranche B Term Loans held by such Existing Tranche B Term Lender repaid on the Fifth Amendment Effective Date and to purchase by assignment Tranche C Term Loans in a like principal amount. By choosing this option, each undersigned Existing Tranche B Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche C Term Loans to such Existing Tranche B Term Lender or to allocate less than 100% of the principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans in Tranche C Term Loans. XXXXXX PERMANENTE GROUP TRUST BY: Xxxxxx Foundation Health Plan, Inc., as named fiduciary CVP CLO 2017-1 Ltd By: Ares Management LLCCVP CLO Advisors, LLC as portfolio manager Investment Manager By: /s/ Xxx Xxxxxx Xxxxxx Name: Xxx Xxxxxx Xxxxxx Title: Authorized Signatory Partner If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Ares Management LLC Credit Value Partners LP Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Tranche B Term Loans (“you”), hereby consents to the Fifth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January 31, 2017, by the Third Amendment to First Lien Credit Agreement dated as of January 31, 2017 and by the Fourth Amendment to the First Lien Credit Agreement dated as of August 14, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around February 15, 2018 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Tranche B Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Tranche B Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Existing Tranche B Term Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Tranche B Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Tranche B Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Tranche B Term Loans held by such Existing Tranche B Term Lender for a Tranche C Term Loan in a like principal amount. By choosing this option, each undersigned Existing Tranche B Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Tranche B Term Lender’s Tranche B Term Loans for Tranche C Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans for Tranche C Term Loans, in which case the difference between the current principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans and the allocated principal amount of Tranche C Term Loans will be prepaid on, and subject to the occurrence of, the Fifth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Tranche B Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Tranche B Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Tranche B Term Loans held by such Existing Tranche B Term Lender repaid on the Fifth Amendment Effective Date and to purchase by assignment Tranche C Term Loans in a like principal amount. By choosing this option, each undersigned Existing Tranche B Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche C Term Loans to such Existing Tranche B Term Lender or to allocate less than 100% of the principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans in Tranche C Term Loans. XXXXXX PERMANENTE GROUP TRUST Blackstone / GSO Long-Short Credit Income Fund BY: Xxxxxx Foundation Health Plan, Inc., GSO / Blackstone Debt Funds Management LLC as named fiduciary By: Ares Management LLC, as portfolio manager Investment Advisor By: /s/ Xxx Xxxxxx Xxxxxxxxx Name: Xxx Xxxxxx Xxxxxxxxx Title: Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Ares Management LLC GSO Capital Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Tranche B Term Loans (“you”), hereby consents to the Fifth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January 31, 2017, by the Third Amendment to First Lien Credit Agreement dated as of January 31, 2017 and by the Fourth Amendment to the First Lien Credit Agreement dated as of August 14, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around February 15, 2018 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Tranche B Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Tranche B Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Existing Tranche B Term Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Tranche B Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Tranche B Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Tranche B Term Loans held by such Existing Tranche B Term Lender for a Tranche C Term Loan in a like principal amount. By choosing this option, each undersigned Existing Tranche B Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Tranche B Term Lender’s Tranche B Term Loans for Tranche C Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans for Tranche C Term Loans, in which case the difference between the current principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans and the allocated principal amount of Tranche C Term Loans will be prepaid on, and subject to the occurrence of, the Fifth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Tranche B Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Tranche B Term Hereby (i) elects to have the full amount (or such lesser amount allocated to such Converting Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% by Jefferies as a Lead Arranger) of the outstanding principal amount of the Tranche B Existing Term Loans held by of such Existing Tranche B 2024 Refinancing Term Lender repaid or purchased and agrees to promptly (but in any event, on or prior to the Fifth date that is 30 days following the First Amendment Effective Date Date) purchase (via assignment and to purchase by assignment Tranche C assumption) an equal amount of 2024 Refinancing Term Loans in a like principal amount. By choosing this option, each undersigned Existing Tranche B Term Lender hereby acknowledges and agrees that (ii) represents and warrants to the Administrative Agent maythat it has the organizational power and authority to execute, in deliver and perform its sole discretionobligations under this 2024 Refinancing Participation Notice and the Amendment (including, elect not without limitation, with respect to allocate Tranche C Term Loans any exchange contemplated hereby) and has taken all necessary corporate and other organizational action to such Existing Tranche B Term Lender or to allocate less than 100% authorize the execution, delivery and performance of this 2024 Refinancing Participation Notice and the principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans in Tranche C Term LoansAmendment. XXXXXX PERMANENTE GROUP TRUST BY: Xxxxxx Foundation Health PlanVery truly yours, Inc.____________________________________, as named fiduciary By: Ares Management LLC, as portfolio manager By: /s/ Xxx Xxxxxx Name: Xxx Xxxxxx Title: Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager By:1 Name: Title: 1 NTD: Include if a second signature is required. EXHIBIT B Amended Credit Agreement (if any): Ares Management LLC Attached) Exhibit B Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Tranche B Term Loans (“you”), hereby consents to the Fifth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated CREDIT AGREEMENT Dated as of November 30December 19, 20152023 by and among SP HOLDCO I, by an Increase Supplement dated INC., as of October 5Holdings, 2016SURGERY CENTER HOLDINGS, by INC., as the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January 31, 2017, by the Third Amendment to First Lien Credit Agreement dated as of January 31, 2017 and by the Fourth Amendment to the First Lien Credit Agreement dated as of August 14, 2017Borrower, the “Existing First Lien several Lenders and Letter of Credit Agreement”)Issuers from time to time parties hereto, among LBM BORROWERJXXXXXXXX FINANCE LLC, as the Administrative Agent and the Collateral Agent, and JXXXXXXXX FINANCE LLC, BARCLAYS BANK PLC, JPMORGAN CHASE BANK, N.A., BANK OF AMERICA, N.A., WXXXX FARGO SECURITIES, LLC, a Delaware limited liability company (the “Borrower”)CAPITAL ONE, LBM MIDCONATIONAL ASSOCIATION, RBC CAPITAL MARKETS*, MIZUHO CORPORATE BANK, LTD., FIFTH THIRD BANK, NATIONAL ASSOCIATION, SILICON VALLEY BANK, KKR CAPITAL MARKETS LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCHSUMITOMO MITSUI BANKING CORPORATION, as Administrative Agent (in such capacity, Lead Arrangers and Bookrunners * RBC Capital Markets is a brand name for the “Administrative Agent”) capital markets activities of Royal Bank of Canada and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around February 15, 2018 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Tranche B Term Lender Signature Page to the Amendmentits affiliates. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Tranche B Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Existing Tranche B Term Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Tranche B Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Tranche B Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Tranche B Term Loans held by such Existing Tranche B Term Lender for a Tranche C Term Loan in a like principal amount. By choosing this option, each undersigned Existing Tranche B Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Tranche B Term Lender’s Tranche B Term Loans for Tranche C Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans for Tranche C Term Loans, in which case the difference between the current principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans and the allocated principal amount of Tranche C Term Loans will be prepaid on, and subject to the occurrence of, the Fifth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Tranche B Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.TABLE OF CONTENTS Page

Cash Settlement Option. The undersigned Existing Tranche B Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Tranche B Term Loans held by such Existing Tranche B Term Lender repaid on the Fifth Amendment Effective Date and to purchase by assignment Tranche C Term Loans in a like principal amount. By choosing this option, each undersigned Existing Tranche B Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche C Term Loans to such Existing Tranche B Term Lender or to allocate less than 100% of the principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans in Tranche C Term Loans. XXXXXX PERMANENTE GROUP SEI INSTITUTIONAL INVESTMENTS TRUST - OPPORTUNISTIC INCOME FUND BY: Xxxxxx Foundation Health Plan, Inc., as named fiduciary By: Ares Management ARES MANAGEMENT LLC, as portfolio manager AS SUB- ADVISOR By: /s/ Xxx Xxxxxx Name: Xxx Xxxxxx Title: Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Ares Management LLC Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Tranche B Term Loans (“you”), hereby consents to the Fifth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January 31, 2017, by the Third Amendment to First Lien Credit Agreement dated as of January 31, 2017 and by the Fourth Amendment to the First Lien Credit Agreement dated as of August 14, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around February 15, 2018 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Tranche B Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Tranche B Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Existing Tranche B Term Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Tranche B Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Tranche B Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Tranche B Term Loans held by such Existing Tranche B Term Lender for a Tranche C Term Loan in a like principal amount. By choosing this option, each undersigned Existing Tranche B Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Tranche B Term Lender’s Tranche B Term Loans for Tranche C Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans for Tranche C Term Loans, in which case the difference between the current principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans and the allocated principal amount of Tranche C Term Loans will be prepaid on, and subject to the occurrence of, the Fifth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Tranche B Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Tranche B Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Tranche B Term Loans held by such Existing Tranche B Term Lender repaid on the Fifth Amendment Effective Date and to purchase by assignment Tranche C Term Loans in a like principal amount. By choosing this option, each undersigned Existing Tranche B Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche C Term Loans to such Existing Tranche B Term Lender or to allocate less than 100% of the principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans in Tranche C Term Loans. XXXXXX PERMANENTE GROUP TRUST BY: Xxxxxx Foundation Health Plan, Inc., as named fiduciary CALIFORNIA STATE TEACHERS’ RETIREMENT SYSTEM By: Ares Management Credit Suisse Asset Management, LLC, as portfolio investment manager By: /s/ Xxx Xxxxx Xxxxxx Name: Xxx Xxxxx Xxxxxx Title: Authorized Signatory Managing Director If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Ares Management Credit Suisse Asset Management, LLC Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Tranche B Term Loans (“you”), hereby consents to the Fifth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January 31, 2017, by the Third Amendment to First Lien Credit Agreement dated as of January 31, 2017 and by the Fourth Amendment to the First Lien Credit Agreement dated as of August 14, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around February 15, 2018 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Tranche B Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Tranche B Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Existing Tranche B Term Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Tranche B Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Tranche B Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Tranche B Term Loans held by such Existing Tranche B Term Lender for a Tranche C Term Loan in a like principal amount. By choosing this option, each undersigned Existing Tranche B Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Tranche B Term Lender’s Tranche B Term Loans for Tranche C Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans for Tranche C Term Loans, in which case the difference between the current principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans and the allocated principal amount of Tranche C Term Loans will be prepaid on, and subject to the occurrence of, the Fifth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Tranche B Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Tranche B Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Tranche B Term Loans held by such Existing Tranche B Term Lender repaid on the Fifth Amendment Effective Date and to purchase by assignment Tranche C Term Loans in a like principal amount. By choosing this option, each undersigned Existing Tranche B Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche C Term Loans to such Existing Tranche B Term Lender or to allocate less than 100% of the principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans in Tranche C Term Loans. XXXXXX PERMANENTE GROUP TRUST BY: Xxxxxx Foundation Health Plan, Inc., as named fiduciary Xxxxxxx Sachs Trust on behalf of the Xxxxxxx Xxxxx High Yield Floating Rate Fund By: Ares Management LLCXxxxxxx Sachs Asset Management, L.P. as portfolio manager investment advisor and not as principal By: /s/ Xxxxx Xxx Xxxxxx Name: Xxxxx Xxx Xxxxxx Title: Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Ares Management LLC Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Tranche B Term Loans (“you”), hereby consents to the Fifth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January 31, 2017, by the Third Amendment to First Lien Credit Agreement dated as of January 31, 2017 and by the Fourth Amendment to the First Lien Credit Agreement dated as of August 14, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around February 15, 2018 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Tranche B Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Tranche B Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Existing Tranche B Term Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Tranche B Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Tranche B Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Tranche B Term Loans held by such Existing Tranche B Term Lender for a Tranche C Term Loan in a like principal amount. By choosing this option, each undersigned Existing Tranche B Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Tranche B Term Lender’s Tranche B Term Loans for Tranche C Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans for Tranche C Term Loans, in which case the difference between the current principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans and the allocated principal amount of Tranche C Term Loans will be prepaid on, and subject to the occurrence of, the Fifth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Tranche B Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Tranche B Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Tranche B Term Loans held by such Existing Tranche B Term Lender repaid on the Fifth Amendment Effective Date and to purchase by assignment Tranche C Term Loans in a like principal amount. By choosing this option, each undersigned Existing Tranche B Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche C Term Loans to such Existing Tranche B Term Lender or to allocate less than 100% of the principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans in Tranche C Term Loans. XXXXXX PERMANENTE GROUP TRUST BY: Xxxxxx Foundation Health Plan, Inc., as named fiduciary Ares XLVI CLO Ltd. By: Ares CLO Management LLC, as portfolio manager its Asset Manager By: /s/ Xxx Xxxxxx Name: Xxx Xxxxxx Title: Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Ares Management LLC Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Tranche B Term Loans (“you”), hereby consents to the Fifth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January 31, 2017, by the Third Amendment to First Lien Credit Agreement dated as of January 31, 2017 and by the Fourth Amendment to the First Lien Credit Agreement dated as of August 14, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around February 15, 2018 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Tranche B Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Tranche B Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Existing Tranche B Term Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Tranche B Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Tranche B Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Tranche B Term Loans held by such Existing Tranche B Term Lender for a Tranche C Term Loan in a like principal amount. By choosing this option, each undersigned Existing Tranche B Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Tranche B Term Lender’s Tranche B Term Loans for Tranche C Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans for Tranche C Term Loans, in which case the difference between the current principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans and the allocated principal amount of Tranche C Term Loans will be prepaid on, and subject to the occurrence of, the Fifth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Tranche B Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Tranche B Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Tranche B Term Loans held by such Existing Tranche B Term Lender repaid on the Fifth Amendment Effective Date and to purchase by assignment Tranche C Term Loans in a like principal amount. By choosing this option, each undersigned Existing Tranche B Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche C Term Loans to such Existing Tranche B Term Lender or to allocate less than 100% of the principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans in Tranche C Term Loans. XXXXXX PERMANENTE GROUP TRUST BYERIE INSURANCE EXCHANGE By: Xxxxxx Foundation Health PlanCredit Suisse Asset Management, Inc.LLC., as named fiduciary By: Ares Management LLCits investment manager for Erie Indemnity Company, as portfolio manager Attorney-in-Fact for Erie Insurance Exchange By: /s/ Xxx Xxxxx Xxxxxx Name: Xxx Xxxxx Xxxxxx Title: Authorized Signatory Managing Director If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Ares Management Credit Suisse Asset Management, LLC Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Tranche B Term Loans (“you”), hereby consents to the Fifth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January 31, 2017, by the Third Amendment to First Lien Credit Agreement dated as of January 31, 2017 and by the Fourth Amendment to the First Lien Credit Agreement dated as of August 14, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around February 15, 2018 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Tranche B Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Tranche B Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Existing Tranche B Term Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Tranche B Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Tranche B Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Tranche B Term Loans held by such Existing Tranche B Term Lender for a Tranche C Term Loan in a like principal amount. By choosing this option, each undersigned Existing Tranche B Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Tranche B Term Lender’s Tranche B Term Loans for Tranche C Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans for Tranche C Term Loans, in which case the difference between the current principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans and the allocated principal amount of Tranche C Term Loans will be prepaid on, and subject to the occurrence of, the Fifth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Tranche B Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Tranche B Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Tranche B Term Loans held by such Existing Tranche B Term Lender repaid on the Fifth Amendment Effective Date and to purchase by assignment Tranche C Term Loans in a like principal amount. By choosing this option, each undersigned Existing Tranche B Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche C Term Loans to such Existing Tranche B Term Lender or to allocate less than 100% of the principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans in Tranche C Term Loans. XXXXXX PERMANENTE GROUP TRUST BY: Xxxxxx Foundation Health Plan, Inc., as named fiduciary JFIN CLO 2014 LTD By: Ares Management Apex Credit Partners LLC, as portfolio manager Portfolio Manager By: /s/ Xxx Xxxxxx Xxxxx Name: Xxx Xxxxxx Xxxxx Title: Authorized Signatory Managing Director If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Ares Management Apex Credit Partners LLC Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Tranche B Term Loans (“you”), hereby consents to the Fifth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January 31, 2017, by the Third Amendment to First Lien Credit Agreement dated as of January 31, 2017 and by the Fourth Amendment to the First Lien Credit Agreement dated as of August 14, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around February 15, 2018 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Tranche B Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Tranche B Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Existing Tranche B Term Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Tranche B Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Tranche B Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Tranche B Term Loans held by such Existing Tranche B Term Lender for a Tranche C Term Loan in a like principal amount. By choosing this option, each undersigned Existing Tranche B Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Tranche B Term Lender’s Tranche B Term Loans for Tranche C Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans for Tranche C Term Loans, in which case the difference between the current principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans and the allocated principal amount of Tranche C Term Loans will be prepaid on, and subject to the occurrence of, the Fifth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Tranche B Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Tranche B Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Tranche B Term Loans held by such Existing Tranche B Term Lender repaid on the Fifth Amendment Effective Date and to purchase by assignment Tranche C Term Loans in a like principal amount. By choosing this option, each undersigned Existing Tranche B Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche C Term Loans to such Existing Tranche B Term Lender or to allocate less than 100% of the principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans in Tranche C Term Loans. XXXXXX PERMANENTE GROUP TRUST BY: Xxxxxx Foundation Health Plan, Inc., as named fiduciary PENSIONDANMARK PENSIONSFORSIKRINGSAKTIESELSKAB By: Ares Management LLCHighland Capital Management, as portfolio manager L.P., As Investment Manager By: /s/ Xxx Xxxxxx Xxxxx Name: Xxx Xxxxxx Xxxxx Title: Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Ares Management LLC Highland Capital Management, L.P. (Institutional) Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Tranche B Term Loans (“you”), hereby consents to the Fifth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January 31, 2017, by the Third Amendment to First Lien Credit Agreement dated as of January 31, 2017 and by the Fourth Amendment to the First Lien Credit Agreement dated as of August 14, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around February 15, 2018 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Tranche B Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Tranche B Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Existing Tranche B Term Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Tranche B Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Tranche B Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Tranche B Term Loans held by such Existing Tranche B Term Lender for a Tranche C Term Loan in a like principal amount. By choosing this option, each undersigned Existing Tranche B Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Tranche B Term Lender’s Tranche B Term Loans for Tranche C Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans for Tranche C Term Loans, in which case the difference between the current principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans and the allocated principal amount of Tranche C Term Loans will be prepaid on, and subject to the occurrence of, the Fifth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Tranche B Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Tranche B Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Tranche B Term Loans held by such Existing Tranche B Term Lender repaid on the Fifth Amendment Effective Date and to purchase by assignment Tranche C Term Loans in a like principal amount. By choosing this option, each undersigned Existing Tranche B Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche C Term Loans to such Existing Tranche B Term Lender or to allocate less than 100% of the principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans in Tranche C Term Loans. XXXXXX PERMANENTE GROUP TRUST Lloyds Banking Group Pensions Trustees Limited as trustee of Lloyds Bank Pension Scheme No. 1 BY: Xxxxxx Foundation Health Plan, Inc., as named fiduciary By: Ares Management LLCLimited, as portfolio manager its Investment Manager By: /s/ Xxx Xxxxxx Name: Xxx Xxxxxx Title: Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Ares Management LLC Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Tranche B Term Loans (“you”), hereby consents to the Fifth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January 31, 2017, by the Third Amendment to First Lien Credit Agreement dated as of January 31, 2017 and by the Fourth Amendment to the First Lien Credit Agreement dated as of August 14, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around February 15, 2018 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Tranche B Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Tranche B Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Existing Tranche B Term Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Tranche B Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Tranche B Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Tranche B Term Loans held by such Existing Tranche B Term Lender for a Tranche C Term Loan in a like principal amount. By choosing this option, each undersigned Existing Tranche B Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Tranche B Term Lender’s Tranche B Term Loans for Tranche C Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans for Tranche C Term Loans, in which case the difference between the current principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans and the allocated principal amount of Tranche C Term Loans will be prepaid on, and subject to the occurrence of, the Fifth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Tranche B Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Tranche B Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Tranche B Term Loans held by such Existing Tranche B Term Lender repaid on the Fifth Amendment Effective Date and to purchase by assignment Tranche C Term Loans in a like principal amount. By choosing this option, each undersigned Existing Tranche B Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche C Term Loans to such Existing Tranche B Term Lender or to allocate less than 100% of the principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans in Tranche C Term Loans. XXXXXX PERMANENTE GROUP TRUST BLACKSTONE/GSO STRATEGIC CREDIT FUND BY: Xxxxxx Foundation Health Plan, Inc., GSO / Blackstone Debt Funds Management LLC as named fiduciary By: Ares Management LLC, as portfolio manager Collateral Manager By: /s/ Xxx Xxxxxx Xxxxxxxxx Name: Xxx Xxxxxx Xxxxxxxxx Title: Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Ares Management LLC GSO Capital Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Tranche B Term Loans (“you”), hereby consents to the Fifth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January 31, 2017, by the Third Amendment to First Lien Credit Agreement dated as of January 31, 2017 and by the Fourth Amendment to the First Lien Credit Agreement dated as of August 14, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around February 15, 2018 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Tranche B Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Tranche B Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Existing Tranche B Term Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Tranche B Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Tranche B Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Tranche B Term Loans held by such Existing Tranche B Term Lender for a Tranche C Term Loan in a like principal amount. By choosing this option, each undersigned Existing Tranche B Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Tranche B Term Lender’s Tranche B Term Loans for Tranche C Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans for Tranche C Term Loans, in which case the difference between the current principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans and the allocated principal amount of Tranche C Term Loans will be prepaid on, and subject to the occurrence of, the Fifth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Tranche B Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Tranche B Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Tranche B Term Loans held by such Existing Tranche B Term Lender repaid on the Fifth Amendment Effective Date and to purchase by assignment Tranche C Term Loans in a like principal amount. By choosing this option, each undersigned Existing Tranche B Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche C Term Loans to such Existing Tranche B Term Lender or to allocate less than 100% of the principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans in Tranche C Term Loans. XXXXXX PERMANENTE GROUP TRUST BY: Xxxxxx Foundation Health Plan, Inc., as named fiduciary HPS WAREHOUSE SARATOGA 2016 LTD. By: Ares Management HPS Investment Partners CLO (US), LLC, as portfolio manager its Asset Manager By: /s/ Xxx Xxxxx Xxxxxx Name: Xxx Xxxxx Xxxxxx Title: Authorized Signatory Senior Vice President If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Ares Management HPS Investment Partners, LLC Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Tranche B Term Loans (“you”), hereby consents to the Fifth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January 31, 2017, by the Third Amendment to First Lien Credit Agreement dated as of January 31, 2017 and by the Fourth Amendment to the First Lien Credit Agreement dated as of August 14, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around February 15, 2018 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Tranche B Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Tranche B Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Existing Tranche B Term Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Tranche B Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Tranche B Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Tranche B Term Loans held by such Existing Tranche B Term Lender for a Tranche C Term Loan in a like principal amount. By choosing this option, each undersigned Existing Tranche B Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Tranche B Term Lender’s Tranche B Term Loans for Tranche C Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans for Tranche C Term Loans, in which case the difference between the current principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans and the allocated principal amount of Tranche C Term Loans will be prepaid on, and subject to the occurrence of, the Fifth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Tranche B Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Tranche B Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Tranche B Term Loans held by such Existing Tranche B Term Lender repaid on the Fifth Amendment Effective Date and to purchase by assignment Tranche C Term Loans in a like principal amount. By choosing this option, each undersigned Existing Tranche B Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche C Term Loans to such Existing Tranche B Term Lender or to allocate less than 100% of the principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans in Tranche C Term Loans. XXXXXX PERMANENTE GROUP TRUST BY: Xxxxxx Foundation Health Plan, Inc., as named fiduciary JFIN CLO 2013 LTD. By: Ares Management Apex Credit Partners LLC, as portfolio manager Portfolio Manager By: /s/ Xxx Xxxxxx Xxxxx Name: Xxx Xxxxxx Xxxxx Title: Authorized Signatory Managing Director If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Ares Management Apex Credit Partners LLC Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Tranche B Term Loans (“you”), hereby consents to the Fifth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January 31, 2017, by the Third Amendment to First Lien Credit Agreement dated as of January 31, 2017 and by the Fourth Amendment to the First Lien Credit Agreement dated as of August 14, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around February 15, 2018 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Tranche B Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Tranche B Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Existing Tranche B Term Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Tranche B Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Tranche B Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Tranche B Term Loans held by such Existing Tranche B Term Lender for a Tranche C Term Loan in a like principal amount. By choosing this option, each undersigned Existing Tranche B Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Tranche B Term Lender’s Tranche B Term Loans for Tranche C Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans for Tranche C Term Loans, in which case the difference between the current principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans and the allocated principal amount of Tranche C Term Loans will be prepaid on, and subject to the occurrence of, the Fifth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Tranche B Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Tranche B Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Tranche B Term Loans held by such Existing Tranche B Term Lender repaid on the Fifth Amendment Effective Date and to purchase by assignment Tranche C Term Loans in a like principal amount. By choosing this option, each undersigned Existing Tranche B Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche C Term Loans to such Existing Tranche B Term Lender or to allocate less than 100% of the principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans in Tranche C Term Loans. XXXXXX PERMANENTE GROUP TRUST BY: Xxxxxx Foundation Health Plan, Inc., as named fiduciary CREDIT SUISSE NOVA (LUX) By: Ares Credit Suisse Asset Management, LLC or Credit Suisse Asset Management LLCLimited, each as portfolio manager Co- Investment Adviser to Credit Suisse Fund Management S.A., management company for Credit Suisse Nova (Lux) By: /s/ Xxx Xxxxx Xxxxxx Name: Xxx Xxxxx Xxxxxx Title: Authorized Signatory Managing Director If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Ares Management Credit Suisse Asset Management, LLC Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Tranche B Term Loans (“you”), hereby consents to the Fifth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January 31, 2017, by the Third Amendment to First Lien Credit Agreement dated as of January 31, 2017 and by the Fourth Amendment to the First Lien Credit Agreement dated as of August 14, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around February 15, 2018 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Tranche B Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Tranche B Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Existing Tranche B Term Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Tranche B Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Tranche B Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Tranche B Term Loans held by such Existing Tranche B Term Lender for a Tranche C Term Loan in a like principal amount. By choosing this option, each undersigned Existing Tranche B Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Tranche B Term Lender’s Tranche B Term Loans for Tranche C Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans for Tranche C Term Loans, in which case the difference between the current principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans and the allocated principal amount of Tranche C Term Loans will be prepaid on, and subject to the occurrence of, the Fifth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Tranche B Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Tranche B Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Tranche B Term Loans held by such Existing Tranche B Term Lender repaid on the Fifth Amendment Effective Date and to purchase by assignment Tranche C Term Loans in a like principal amount. By choosing this option, each undersigned Existing Tranche B Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche C Term Loans to such Existing Tranche B Term Lender or to allocate less than 100% of the principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans in Tranche C Term Loans. XXXXXX PERMANENTE GROUP TRUST BY: Xxxxxx Foundation Health PlanInstitutional Credit Fund Subsidiary, Inc., as named fiduciary L.P. By: Ares Management LLCHighbridge Capital Management, LLC as portfolio manager Trading Manager and not in its individual capacity By: /s/ Xxx Xxxxxx Xxxxx Xxxx Name: Xxx Xxxxxx Xxxxx Xxxx Title: Authorized Signatory Managing Director If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Ares Management HPS Investment Partners, LLC Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Tranche B Term Loans (“you”), hereby consents to the Fifth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January 31, 2017, by the Third Amendment to First Lien Credit Agreement dated as of January 31, 2017 and by the Fourth Amendment to the First Lien Credit Agreement dated as of August 14, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around February 15, 2018 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Tranche B Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Tranche B Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Existing Tranche B Term Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Tranche B Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Tranche B Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Tranche B Term Loans held by such Existing Tranche B Term Lender for a Tranche C Term Loan in a like principal amount. By choosing this option, each undersigned Existing Tranche B Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Tranche B Term Lender’s Tranche B Term Loans for Tranche C Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans for Tranche C Term Loans, in which case the difference between the current principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans and the allocated principal amount of Tranche C Term Loans will be prepaid on, and subject to the occurrence of, the Fifth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Tranche B Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Tranche B Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Tranche B Term Loans held by such Existing Tranche B Term Lender repaid on the Fifth Amendment Effective Date and to purchase by assignment Tranche C Term Loans in a like principal amount. By choosing this option, each undersigned Existing Tranche B Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche C Term Loans to such Existing Tranche B Term Lender or to allocate less than 100% of the principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans in Tranche C Term Loans. XXXXXX PERMANENTE GROUP TRUST BYPrudential Investment Portfolios, Inc. 14 - Prudential Floating Rate Income Fund By: Xxxxxx Foundation Health PlanPGIM, Inc., as named fiduciary By: Ares Management LLC, as portfolio manager Investment Advisor By: /s/ Xxx Xxxxxx Xxxxx Xxxxxxx Name: Xxx Xxxxxx Xxxxx Xxxxxxx Title: Authorized Signatory Vice President If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Ares Management LLC PGIM, Inc. Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Tranche B Term Loans (“you”), hereby consents to the Fifth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January 31, 2017, by the Third Amendment to First Lien Credit Agreement dated as of January 31, 2017 and by the Fourth Amendment to the First Lien Credit Agreement dated as of August 14, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around February 15, 2018 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Tranche B Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Tranche B Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Existing Tranche B Term Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Tranche B Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Tranche B Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Tranche B Term Loans held by such Existing Tranche B Term Lender for a Tranche C Term Loan in a like principal amount. By choosing this option, each undersigned Existing Tranche B Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Tranche B Term Lender’s Tranche B Term Loans for Tranche C Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans for Tranche C Term Loans, in which case the difference between the current principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans and the allocated principal amount of Tranche C Term Loans will be prepaid on, and subject to the occurrence of, the Fifth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Tranche B Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Tranche B Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Tranche B Term Loans held by such Existing Tranche B Term Lender repaid on the Fifth Amendment Effective Date and to purchase by assignment Tranche C Term Loans in a like principal amount. By choosing this option, each undersigned Existing Tranche B Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche C Term Loans to such Existing Tranche B Term Lender or to allocate less than 100% of the principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans in Tranche C Term Loans. XXXXXX PERMANENTE GROUP TRUST Blackstone / GSO Senior Floating Rate Term Fund BY: Xxxxxx Foundation Health Plan, Inc., GSO / Blackstone Debt Funds Management LLC as named fiduciary By: Ares Management LLC, as portfolio manager Investment Advisor By: /s/ Xxx Xxxxxx Xxxxxxxxx Name: Xxx Xxxxxx Xxxxxxxxx Title: Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Ares Management LLC GSO Capital Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Tranche B Term Loans (“you”), hereby consents to the Fifth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January 31, 2017, by the Third Amendment to First Lien Credit Agreement dated as of January 31, 2017 and by the Fourth Amendment to the First Lien Credit Agreement dated as of August 14, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around February 15, 2018 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Tranche B Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Tranche B Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Existing Tranche B Term Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Tranche B Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Tranche B Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Tranche B Term Loans held by such Existing Tranche B Term Lender for a Tranche C Term Loan in a like principal amount. By choosing this option, each undersigned Existing Tranche B Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Tranche B Term Lender’s Tranche B Term Loans for Tranche C Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans for Tranche C Term Loans, in which case the difference between the current principal amount of such Existing Tranche B Term Lender’s Tranche B Term Loans and the allocated principal amount of Tranche C Term Loans will be prepaid on, and subject to the occurrence of, the Fifth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Tranche B Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.