Document:

Exhibit 4.2
FIRST SUPPLEMENTAL INDENTURE
FIRST SUPPLEMENTAL INDENTURE (this “Supplemental Indenture”) dated as of November 8, 2021, among DI SUPER HOLDINGS, INC., a Delaware corporation, DI INTERMEDIATE, INC., a Delaware corporation, DI PURCHASER, INC., a Delaware corporation, DISTRIBUTION INTERNATIONAL HOLDINGS, LLC, a Delaware limited liability company, DISTRIBUTION INTERNATIONAL HOLDING CORP., a Delaware corporation, DISTRIBUTION INTERNATIONAL, INC., a Delaware corporation, LECCO INDUSTRIES, INC., a Texas corporation, UNITED INSULATION SALES AND FABRICATION, INC., a Texas corporation, DISTRIBUTION INTERNATIONAL SOUTHWEST, INC., a Delaware corporation, MECHANICAL INSULATION SUPPLY, INC., a Michigan corporation, SILVERCOTE, LLC, a Delaware limited liability company, IDEAL PRODUCTS OF AMERICA HOLDINGS, LLC, a Delaware limited liability company, BWI DISTRIBUTION, INC., a Maryland corporation, DISTRIBUTION INTERNATIONAL NORTHEAST, INC., a New Jersey corporation, THORPE PRODUCTS COMPANY, a Texas corporation, THORPE PRODUCTS MIDWEST, LLC, a Texas limited liability company (collectively, the “New Guarantors”), direct or indirect subsidiaries of TOPBUILD CORP. (or its successor), a Delaware corporation (the “Issuer”), and U.S. BANK NATIONAL ASSOCIATION, a national banking association, as trustee under the indenture referred to below (the “Trustee”).
W I T N E S S E T H:
WHEREAS, the Issuer, certain Guarantors and the Trustee have heretofore executed an indenture, dated as of October 14, 2021 (as amended, supplemented or otherwise modified, the “Indenture”), providing for the issuance of the Issuer’s 4.125% Senior Notes due 2032 (the “Notes”), initially in the aggregate principal amount of $500,000,000;
WHEREAS, Sections 4.11 and 10.06 of the Indenture require that the Issuer cause the New Guarantors to execute and deliver to the Trustee a supplemental indenture pursuant to which the New Guarantors shall guarantee the Guaranteed Obligations; and
WHEREAS, pursuant to Sections 4.11, 10.06 and 9.01 of the Indenture, the Trustee and the Issuer are authorized to execute and deliver this Supplemental Indenture;
NOW THEREFORE, in consideration of the foregoing and for other good and valuable consideration, the receipt of which is hereby acknowledged, the New Guarantors, the Issuer and the Trustee mutually covenant and agree for the equal and ratable benefit of the holders of the Notes as follows:
1.Defined Terms. As used in this Supplemental Indenture, terms defined in the Indenture or in the preamble or recital hereto are used herein as therein defined. The words “herein,” “hereof” and “hereby” and other words of similar import used in this Supplemental Indenture refer to this Supplemental Indenture as a whole and not to any particular Section hereof.
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2.Agreement to Guarantee. Each New Guarantor hereby agrees, jointly and severally with all existing Guarantors (if any), to guarantee the Guaranteed Obligations on the terms and subject to the conditions set forth in Article X of the Indenture and to be bound by all other applicable provisions of the Indenture and the Notes and to perform all of the obligations and agreements of a Guarantor under the Indenture.
3.Notices. All notices or other communications to the New Guarantors shall be given as provided in Section 11.02 of the Indenture.
4.Ratification of Indenture; Supplemental Indentures Part of Indenture. Except as expressly amended hereby, the Indenture is in all respects ratified and confirmed and all the terms, conditions and provisions thereof shall remain in full force and effect. This Supplemental Indenture shall form a part of the Indenture for all purposes, and every holder of Notes heretofore or hereafter authenticated and delivered shall be bound hereby.
5.Governing Law. THIS SUPPLEMENTAL INDENTURE SHALL BE GOVERNED BY, AND CONSTRUED IN ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW YORK WITHOUT GIVING EFFECT TO APPLICABLE PRINCIPLES OF CONFLICTS OF LAW TO THE EXTENT THAT THE APPLICATION OF THE LAWS OF ANOTHER JURISDICTION WOULD BE REQUIRED THEREBY.
6.Trustee Makes No Representation. The Trustee accepts the amendments of the Indenture effected by this Supplemental Indenture on the terms and conditions set forth in the Indenture, including the terms and provisions defining and limiting the liabilities and responsibilities of the Trustee. Without limiting the generality of the foregoing, the Trustee shall not be responsible in any manner whatsoever for or with respect to any of the recitals or statements contained herein, all of which recitals or statements are made solely by the Issuer, or for or with respect to (i) the validity or sufficiency of this Supplemental Indenture or any of the terms or provisions hereof, (ii) the proper authorization hereof by the Issuer and each New Guarantor, in each case, by action or otherwise, (iii) the due execution hereof by the Issuer and each New Guarantor or (iv) the consequences of any amendment herein provided for, and the Trustee makes no representation with respect to any such matters.
7.Counterparts. The parties may sign any number of copies of this Supplemental Indenture. Each signed copy shall be an original, but all of them together represent the same agreement. One signed copy is enough to prove this Supplemental Indenture. Notwithstanding the foregoing, the exchange of copies of this Supplemental Indenture and of signature pages by facsimile or PDF transmission shall constitute effective execution and delivery of this Supplemental Indenture as to the parties hereto and may be used in lieu of the original Supplemental Indenture and signature pages for all purposes.
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8.Effect of Headings. The Section headings of this Supplemental Indenture have been inserted for convenience of reference only, are not intended to be considered a part hereof and shall not modify or restrict any of the terms or provisions here.
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IN WITNESS WHEREOF, the parties have caused this Supplemental Indenture to be duly executed as of the date first written above.
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	TOPBUILD CORP.

	By:
	/s/ John S. Peterson

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	Name:John S. Peterson

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	Title:

Vice President and Chief Financial Officer

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[Signature Page to Supplemental Indenture]

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	DI SUPER HOLDINGS, INC., as a Guarantor;

	DI INTERMEDIATE, INC., as a Guarantor;

	DI PURCHASER, INC., as a Guarantor;

	DISTRIBUTION INTERNATIONAL HOLDINGS, LLC, as a Guarantor;

	DISTRIBUTION INTERNATIONAL HOLDING CORP., as a Guarantor;

	DISTRIBUTION INTERNATIONAL, INC., as a Guarantor;

	LECCO INDUSTRIES, INC., as a Guarantor;

	UNITED INSULATION SALES AND FABRICATION, INC., as a Guarantor;

	DISTRIBUTION INTERNATIONAL SOUTHWEST, INC., as a Guarantor;

	MECHANICAL INSULATION SUPPLY, INC., as a Guarantor;

	SILVERCOTE, LLC, as a Guarantor;

	BWI DISTRIBUTION, INC., as a Guarantor

	IDEAL PRODUCTS OF AMERICA HOLDINGS, LLC, as a Guarantor;

	DISTRIBUTION INTERNATIONAL NORTHEAST, INC., as a Guarantor;

	THORPE PRODUCTS COMPANY, as a Guarantor; and

	THORPE PRODUCTS MIDWEST, LLC, as a Guarantor

	By:
	/s/ Luis Machado

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	Name:Luis Machado

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	Title:Vice President and Secretary
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[Signature Page to Supplemental Indenture]

U.S. BANK NATIONAL ASSOCIATION, not in its individual capacity, but solely as Trustee
	By:
	/s/ Michael C. Daly

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	Name:Michael C. Daly

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	Title:Vice President
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[Signature Page to Supplemental Indenture]‌Exhibit 10.2

THIRD AMENDMENT TO LEASE
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THIS THIRD AMENDMENT TO LEASE (this "Amendment") is entered into as of this 24th day of February, 2022 (the "Effective Date"), by and between BMR-ROGERS STREET LLC, a Delaware limited liability company ("Landlord"), and GENERATION BIO CO., a Delaware corporation ("Tenant").
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RECITALS
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A.WHEREAS, Landlord and Tenant are parties to that certain Lease dated as of August 2, 2018, as amended by that certain First Amendment to Lease dated as of July 12, 2019 (the "First Amendment"), as further amended by that certain Second Amendment to Lease dated as of June 17, 2020 (the "Second Amendment") (as amended, the "Existing Lease"), whereby Tenant leases certain Premises from Landlord located at 301 Binney Street, Cambridge, Massachusetts;
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B.WHEREAS, Tenant has requested and Landlord has agreed that Tenant surrender a portion of its mechanical space within the First Floor Premises (as defined in the First Amendment) as shown on Exhibit A, for a total aggregate area of 404 RSF (collectively, the "Surrender Premises") for use by another tenant, to substitute the Premises plans attached to the Existing Lease accordingly, and to adjust the Base Rent for the First Floor Premises accordingly; and
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C.WHEREAS, Landlord and Tenant desire to modify and amend the Existing Lease only in the respects and on the conditions hereinafter stated.
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AGREEMENT
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NOW, THEREFORE, Landlord and Tenant, in consideration of the mutual promises contained herein and for other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, and intending to be legally bound, agree as follows:
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1.Definitions. For purposes of this Amendment, capitalized terms shall have the meanings ascribed to them in the Existing Lease unless otherwise defined herein. The Existing Lease, as amended by this Amendment, is referred to collectively herein as the "Lease." From and after the Effective Date, the term "Lease," as used in the Existing Lease, shall mean the Existing Lease, as amended by this Amendment.
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2.Surrender Premises. The parties acknowledge and agree that Tenant shall be deemed to have surrendered the Surrender Premises effective as of September 1, 2020. The table set forth in Section 2.2 of the Original Lease is hereby deleted and replaced with the following, effective as of September 1, 2020:
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Definition or Provision
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Means the Following

	Approximate Rentable Area of Fourth Floor Premises
	52,252 square feet

	Approximate Rentable Area of First Floor Premises
	18,906 square feet

	Approximate Rentable Area of Premises (total)
	71,158 square feet

	Approximate Rentable Area of Building
	417,290 square feet

	Tenant's Pro Rata Share of Building
	17.05%

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3.Premises. The parties acknowledge and agree that the Premises plans attached to the Second Amendment as Exhibit A are hereby deleted in their entirety and replaced with the plans attached hereto and incorporated herein as Exhibit B.
4.Base Rent for First Floor Premises. Notwithstanding anything to the contrary set forth in the Existing Lease, from and after January 1, 2022, monthly and annual installments of Base Rent for the First Floor Premises as of January 1, 2022 and through the Term of the Lease shall be as set forth in the chart below, which chart shall replace the corresponding rows in the chart set forth in Section 2 of the First Amendment. Furthermore, the provisions of Article 8 of the Existing Lease shall not apply to the Base Rent for the First Floor Premises for the period commencing on January 1, 2022 and ending on April 30, 2029. Tenant acknowledges that notwithstanding the fact that the Surrender Premises shall be deemed surrendered by Tenant as of September 1, 2020, there shall be no adjustments made to Base Rent or Tenant's Adjusted Share with respect to the First Floor Premises previously payable by Tenant prior to January 1, 2022.
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	Dates
	Square Feet of Rentable Area 
	Base Rent per Square Foot of Rentable Area
	Monthly Base Rent
	Annual (or Annualized) Base Rent
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	1/1/2022-
7/17/2022
	18,906
	$94.23 annually
	$148,459.37
	$1,781,512.38

	7/18/2022-
7/17/2023
	18,906
	$96.88 annually
	$152,634.44
	$1,831,613.28

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	/17/2024
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	7/18/2023-
7/17/2024
	18,906
	$99.60 annually
	$156,919.80
	$1,883,037.60

	7/18/2024-
7/17/2025
	18,906
	$102.40 annually
	$161,331.20
	$1,935,974.40

	7/18/2025-
7/17/2026
	18,906
	$105.28 annually
	$165,868.64
	$1,990,423.68

	7/18/2026-
7/17/2027
	18,906
	$108.26 annually
	$170,563.63
	$2,046,763.56

	7/18/2027-
7/17/2028
	18,906
	$111.32 annually
	$175,384.66
	$2,104,615.92

	7/18/2028-
4/30/2029
	18,906
	$114.48 annually
	$180,363.24*
	$2,164,358.88*

*Tenant to pay pro-rated amount for partial month/year
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5.Notices. Landlord and Tenant confirm that, notwithstanding anything in the Lease to the contrary, notices delivered to each party pursuant to the Lease should be sent to:
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Landlord:          BMR-Rogers Street LLC 
4570 Executive Drive, Suite 400 San Diego, California 92121 
Attn: Legal Department 
Email: [**]
 
Tenant:             Generation Bio Co. 
             301 Binney Street 
                         Cambridge, Massachusetts 02142  
                         Attn: Chief Financial Officer 
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6.Broker. Tenant represents and warrants to Landlord that Tenant has not dealt with any broker or agent in the negotiation for or the obtaining of this Amendment, and agrees to reimburse, indemnify, save, defend (at Landlord's option and with counsel reasonably acceptable to Landlord, at Tenant's sole cost and expense) and hold harmless the Landlord Parties for, from and against any and all cost or liability for compensation claimed by any such broker or agent employed or engaged by Tenant or claiming to have been employed or engaged by Tenant. Landlord represents and warrants to Tenant that Landlord has not dealt with any broker or agent in the negotiation for or the obtaining of this Amendment and agrees to reimburse, indemnify, save, defend (at Tenant's option and with counsel reasonably acceptable to Tenant, at Landlord's sole cost and expense) and hold harmless the Tenant Parties for, from and against any and all cost or liability for compensation claimed by any such broker or agent employed or engaged by Landlord or claiming to have been employed or engaged by Landlord.
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7.Effect of Amendment. Except as modified by this Amendment, the Existing Lease and all the covenants, agreements, terms, provisions and conditions thereof shall remain in full force and effect and are hereby ratified and affirmed. In the event of any conflict between the terms contained in this Amendment and the Existing Lease, the terms herein contained shall supersede and control the obligations and liabilities of the parties.
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8.Successors and Assigns. Each of the covenants, conditions and agreements contained in this Amendment shall inure to the benefit of and shall apply to and be binding upon the parties hereto and their respective heirs, legatees, devisees, executors, administrators and permitted successors and assigns and sublessees. Nothing in this section shall in any way alter the provisions of the Lease restricting assignment or subletting.
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9.Miscellaneous. This Amendment becomes effective only upon execution and delivery hereof by Landlord and Tenant. The captions of the paragraphs and subparagraphs in this Amendment are inserted and included solely for convenience and shall not be considered or given any effect in construing the provisions hereof. All exhibits hereto are incorporated herein by reference. Submission of this instrument for examination or signature by Tenant does not constitute a reservation of or option for a lease, and shall not be effective as a lease, lease amendment or otherwise until execution by and delivery to both Landlord and Tenant.
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10.Authority. Tenant guarantees, warrants and represents that the individual or individuals signing this Amendment on Tenant's behalf have the power, authority and legal capacity to sign this Amendment on behalf of and to bind all entities, corporations, partnerships, limited liability companies, joint venturers or other organizations and entities on whose behalf such individual or individuals have signed. Landlord guarantees, warrants and represents that the individual or individuals signing this Amendment on Landlord's behalf have the power, authority and legal capacity to sign this Amendment on behalf of and to bind all entities, corporations, partnerships, limited liability companies, joint venturers or other organizations and entities on whose behalf such individual or individuals have signed.
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11.Counterparts: Facsimile and PDF Signatures. This Amendment may be executed in one or more counterparts, each of which, when taken together, shall constitute one and the same document. A portable document format (PDF) signature on this Amendment shall be equivalent to, and have the same force and effect as, an original signature.
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IN WITNESS WHEREOF, Landlord and Tenant have executed this Amendment as of the Effective Date first above written.
LANDLORD:
BMR-ROGERS STREET LLC,
a Delaware limited liability company
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By:    /s/ William F. Kane   
Name: William F. Kane
Title:  President, East Coast and UK Markets
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TENANT:
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GENERATION BIO CO.,
a Delaware corporation
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By:    /s/ Jennifer Elliott   
Name: Jennifer Elliott
Title:   Chief Legal Officer

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