Document:

EX-4.1

 Exhibit 4.1 
  

FOURTH SUPPLEMENTAL INDENTURE 

Dated as of November 12, 2014 

Among 
 OWENS CORNING, 

As Issuer 
 Each of the SUBSIDIARY
GUARANTORS party hereto 
 and 

WELLS FARGO BANK, NATIONAL ASSOCIATION, 

As Trustee 
  

4.20% Senior Notes Due 2024 

 THIS FOURTH SUPPLEMENTAL INDENTURE (the “Fourth Supplemental Indenture”),
dated as of November 12, 2014, among OWENS CORNING, a Delaware corporation (“Company”), the SUBSIDIARY GUARANTORS listed on the signature pages hereto (“Subsidiary Guarantors”), and WELLS FARGO BANK, NATIONAL
ASSOCIATION, a national banking association duly incorporated and existing under the laws of the United Sates of America, as Trustee (“Trustee”). 

W I T N E S S E T H: 

WHEREAS, the Company, certain Subsidiary Guarantors and the Trustee have heretofore executed and delivered an Indenture, dated as of
June 2, 2009 (the “Original Indenture”) (as supplemented by that certain First Supplemental Indenture, dated as of June 8, 2009, as further supplemented by that certain Second Supplemental Indenture, dated as of
May 26, 2010, as further supplemented by that certain Third Supplemental Indenture, dated as of October 22, 2012 and as hereby further supplemented, the “Indenture”), providing for the issuance from time to time of one or
more series of the Company’s Securities; 
 WHEREAS, pursuant to the terms of the Indenture, the Company desires to
provide for the establishment of a series of Securities to be designated as the “4.20% Senior Notes due 2024” (herein referred to as the “2024 Notes”), the form and substance of the 2024 Notes and the terms, provisions and
conditions thereof to be set forth as provided in the Original Indenture and this Fourth Supplemental Indenture; 
 WHEREAS,
Section 2.03 of the Original Indenture provides that various matters with respect to any series of Securities issued under the Indenture may be established in a supplemental indenture to the Indenture; 

WHEREAS, Section 9.01(vii) of the Original Indenture provides that the Company, the Subsidiary Guarantors and the Trustee may enter into
a supplemental indenture to the Indenture to establish the form or terms of Securities of any series as permitted by the Original Indenture; 

WHEREAS, Section 9.01(iv) of the Original Indenture provides that the Company, the Subsidiary Guarantors and the Trustee may enter into a
supplemental indenture to change or eliminate any of the provisions of the Indenture with respect to any series of Securities (other than any outstanding Securities of any series to which such modification would apply); and 

WHEREAS, all acts and things necessary to make this Fourth Supplemental Indenture, when duly executed and delivered, a valid, binding and
legal instrument in accordance with its terms and for the purposes herein expressed, have been done and performed; and the execution and delivery of this Fourth Supplemental Indenture have been in all respects duly authorized. 

NOW, THEREFORE, in consideration of the foregoing and for other good and valuable consideration, the receipt whereof is hereby acknowledged,
it is agreed by and among the Company, the Subsidiary Guarantors, and the Trustee as follows: 

  
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 ARTICLE ONE 

Relation to Indenture; Additional Definitions 

1.01 Relation to Indenture. This Fourth Supplemental Indenture constitutes an integral part of the Indenture. 

1.02 Additional Definitions. For all purposes of this Fourth Supplemental Indenture, capitalized terms used herein shall have
the respective meanings specified below or in the Original Indenture, as the case may be. 
 “Beneficial
Owner” has the meaning assigned to such term in Rule 13d-3 and Rule 13d-5 under the Exchange Act, except that in calculating the beneficial ownership of any particular “person” (as that term is used in Section 13(d)(3) of the
Exchange Act), such “person” will be deemed to have beneficial ownership of all securities that such “person” has the right to acquire by conversion or exercise of other securities, whether such right is currently exercisable or
is exercisable only after the passage of time. The terms “Beneficially Owns” and “Beneficially Owned” have a corresponding meaning. 

“Change of Control” means the occurrence of any of the following: 

1) the direct or indirect sale, lease, transfer, conveyance or other disposition (other than by way of merger or
consolidation), in one or a series of related transactions, of all or substantially all of the properties or assets of the Company and its Subsidiaries taken as a whole to any “person” (as that term is used in Section 13(d) of the
Exchange Act); 
 2) the adoption of a plan relating to the liquidation or dissolution of the Company; 

3) the consummation of any transaction (including, without limitation, any merger or consolidation), the result of which is
that any “person” (as defined above) becomes the Beneficial Owner, directly or indirectly, of more than 50% of the Voting Stock of the Company, measured by voting power rather than number of shares; or 

4) the first day on which a majority of the members of the Board of Directors of the Company are not Continuing Directors. 

“Change of Control Offer” has the meaning set forth in Section 2.11(a). 

“Change of Control Payment” has the meaning set forth in Section 2.11(a). 

“Change of Control Payment Date” has the meaning set forth in Section 2.11(a)(2). 

“Change of Control Repurchase Event” means the occurrence of a Change of Control and a Ratings Downgrade. 

“Comparable Treasury Issue” means the United States Treasury security selected

  
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by the Quotation Agent as having a maturity comparable to the remaining term of the 2024 Notes to be redeemed that would be utilized, at the time of selection and in accordance with customary
financial practice, in pricing new issues of corporate notes of comparable maturity to the remaining term of the 2024 Notes. 

“Comparable Treasury Price” means, with respect to any redemption date, (1) the average of four Reference
Treasury Dealer Quotations for such redemption date, after excluding the highest and lowest such Reference Treasury Dealer Quotations, or (2) if the Quotation Agent obtains fewer than four such Reference Treasury Dealer Quotations, the average
of all such quotations. 
 “Continuing Directors” means, as of any date of determination, any member of the
Board of Directors of the Company who: 
 1) was a member of such Board of Directors on the date of the indenture; or 

2) was nominated for election or elected to such Board of Directors with the approval of a majority of the Continuing Directors
who were members of such Board of Directors at the time of such nomination or election. 
 “Corporate Trust
Office” means the office of the Trustee at which the corporate trust business of the Trustee with respect to the Indenture is principally administered, which at the date of this Fourth Supplemental Indenture is located at the offices
of Wells Fargo Bank, National Association, CMES, 150 East 42nd Street, 40th Floor, New York, NY 10017. 

“Credit Agreement” means the Credit Agreement dated as of May 26, 2010, among the Company, the
lending institutions party thereto and Wells Fargo Bank, National Association, as administrative agent, and any related notes, guarantees, collateral documents, instruments and agreements executed in connection therewith, and in each case, as
amended, restated, modified, renewed, refunded, replaced (whether upon termination or otherwise) or refinanced in whole or in part from time to time. 

“Global Notes” has the meaning set forth in Section 2.07(a). 

“Interest Payment Dates” means June 1 and December 1 of each year, or if any such day is not
a Business Day, the next succeeding Business Day, until maturity, beginning on June 1, 2015. 
 “Maturity
Date” has the meaning set forth in Section 2.03. 
 “Notation of Guarantee” has the meaning
set forth in Section 2.08. 
 “Note Registrar” means Wells Fargo Bank, National Association, hereby
appointed as an agency of the Company in accordance with Section 2.05 of the Indenture. 
 “Optional Redemption
Date” means September 1, 2024. 

  
 3 

 “Original Indenture” has the meaning set forth in the
first paragraph of the Recitals hereof. 
 “Quotation Agent” means a Reference Treasury Dealer appointed by
the Company. 
 “Rating Agency” means each of Moody’s Investors Service Inc. and Standard &
Poor’s Ratings Services, a division of The McGraw-Hill Companies, Inc., or any of their successors. 
 “Ratings
Downgrade” means when, at the time of a Change of Control, the 2024 Notes carry: 
 1) an investment grade credit
rating (BBB-/Baa3, or equivalent, or better) from both Rating Agencies, and such rating from both Rating Agencies is within 60 days of the occurrence of the Change of Control (which period shall be extended so long as the rating of the 2024 Notes is
under publicly announced consideration for possible downgrade by either Rating Agency) either downgraded to a non-investment grade credit rating (BB+/Ba1 or equivalent, or worse) or withdrawn and is not within such period subsequently (in the case
of a downgrade) upgraded to an investment grade credit rating or (in the case of a withdrawal) replaced by an investment grade credit rating; 

2) a non-investment grade credit rating (BB+/Ba1, or equivalent, or worse) from both Rating Agencies, and such rating from both
Rating Agencies is within 60 days of the occurrence of the Change of Control (which period shall be extended so long as the rating of the 2024 Notes is under publicly announced consideration for possible downgrade by either Rating Agency) downgraded
by one or more notches (for illustration, Ba1 to Ba2 being one notch) and is not within such period subsequently upgraded to its earlier credit rating or better by both Rating Agencies; 

3) both (A) an investment grade credit rating (BBB-/Baa3, or equivalent, or better) from one Rating Agency, and such
rating is within 60 days of the occurrence of the Change of Control (which period shall be extended so long as the rating of the 2024 Notes is under publicly announced consideration for possible downgrade by either Rating Agency) either downgraded
to a non-investment grade credit rating (BB+/Ba1, or equivalent, or worse) or withdrawn and is not within such period subsequently (in the case of a downgrade) upgraded to an investment grade credit rating by such Rating Agency or (in the case of a
withdrawal) replaced by an investment grade credit rating from such Rating Agency and (B) a non-investment grade credit rating (BB+/Ba1, or equivalent, or worse) from one Rating Agency, and such rating is within 60 days of the occurrence of the
Change of Control (which period shall be extended so long as the rating of the 2024 Notes is under publicly announced consideration for possible downgrade by either Rating Agency) downgraded by one or more notches (for illustration, Ba1 to Ba2 being
one notch) and is not within such period subsequently upgraded to its earlier credit rating or better by such Rating 

  
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 Agency; 

4) both (A) an investment grade credit rating (BBB-/Baa3, or equivalent, or better) from one Rating Agency, and such
rating is within 60 days of the occurrence of the Change of Control (which period shall be extended so long as the rating of the 2024 Notes is under publicly announced consideration for possible downgrade by either Rating Agency) either downgraded
to a non-investment grade credit rating (BB+/Ba1, or equivalent, or worse) or withdrawn and is not within such period subsequently (in the case of a downgrade) upgraded to an investment grade credit rating by such Rating Agency or (in the case of a
withdrawal) replaced by an investment grade credit rating from such Rating Agency and (B) no credit rating from one Rating Agency, and such Rating Agency does not assign within 60 days of the occurrence of the Change of Control an investment
grade credit rating to the 2024 Notes; 
 5) both (A) a non-investment grade credit rating (BB+/Ba1, or equivalent, or
worse) from one Rating Agency, and such rating is within 60 days of the occurrence of the Change of Control (which period shall be extended so long as the rating of the 2024 Notes is under publicly announced consideration for possible downgrade by
either Rating Agency) downgraded by one or more notches (for illustration, Ba1 to Ba2 being one notch) and is not within such period subsequently upgraded to its earlier credit rating or better by such Rating Agency and (B) no credit rating
from one Rating Agency, and such Rating Agency does not assign within 60 days of the occurrence of the Change of Control an investment grade credit rating to the 2024 Notes; or 

6) no credit rating from either Rating Agency and both Rating Agencies do not assign within 60 days of the occurrence of the
Change of Control an investment grade credit rating to the 2024 Notes; 
 and in making the relevant decision(s) referred to above to
downgrade or withdraw such ratings, as applicable, the relevant Rating Agency announces publicly or confirms in writing to the Company that such decision(s) resulted, in whole or in part, from the occurrence of the Change of Control. 

“Reference Treasury Dealer” means (i) each of Goldman, Sachs & Co., Citigroup Global Markets
Inc., J.P. Morgan Securities LLC and a Primary Treasury Dealer (as defined herein) selected by Wells Fargo Securities, LLC, or their respective successors or affiliates, and at least one other primary U.S. Government securities dealer in New York
City (a “Primary Treasury Dealer”) selected by the Company; provided, however, that if any of the foregoing shall cease to be a Primary Treasury Dealer, the Company will substitute therefor another Primary Treasury Dealer; and
(ii) any other Primary Treasury Dealer selected by the Company. 
 “Reference Treasury Dealer
Quotations” means, with respect to each Reference Treasury Dealer and any redemption date, the average, as determined by the Company, of the bid and asked prices for the Comparable Treasury Issue (expressed in each case as a percentage of
its principal amount) quoted in writing to the Quotation Agent by such Reference Treasury Dealer at 5:00 p.m., New York City time, on the third Business Day 

  
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preceding such redemption date. 
 “Treasury Rate”
means, with respect to any redemption date, the rate per annum equal to the semi-annual equivalent yield to maturity of the Comparable Treasury Issue, assuming a price for the Comparable Treasury Issue (expressed as a percentage of its principal
amount) equal to the Comparable Treasury Price for such redemption date. 
 “2024 Notes” has the meaning set
forth in the second paragraph of the Recitals hereof. 
 All references herein to Articles, Sections or Exhibits, unless otherwise
specified, refer to the corresponding Articles, Sections or Exhibits of this Fourth Supplemental Indenture. The terms “herein,” “hereof,” “hereunder” and other words of similar import refer to this
Fourth Supplemental Indenture. 
 ARTICLE TWO 

The Series of Notes 
 2.01
Title of the Notes. The 2024 Notes shall be designated as the “4.20% Senior Notes due 2024.” 
 2.02 Limitation on
Aggregate Principal Amount. The aggregate principal amount of 2024 Notes that may initially be outstanding shall not exceed $400,000,000. 

2.03 Stated Maturity. The stated maturity of the 2024 Notes shall be December 1, 2024 (the “Maturity Date”). 

2.04 Interest and Interest Rate. 

(a) The 2024 Notes shall bear interest at the rate of 4.20% per annum, from and including their Original Issue Date of November 12,
2014, or from the most recent Interest Payment Date on which interest has been paid or provided for, but excluding, the Maturity Date. Such interest shall be payable semiannually in arrears, on the Interest Payment Dates of June 1 and
December 1 in each year, commencing on June 1, 2015. Interest accrued on the 2024 Notes from the last Interest Payment Date before the Maturity Date shall be payable on the Maturity Date. 

(b) The interest so payable on any Interest Payment Date shall be paid to the Persons in whose names the 2024 Notes are registered at the
close of business on the record date for such Interest Payment Date, being the immediately preceding May 15 and November 15, as the case may be, whether or not such day is a Business Day. 

(c) The Company will pay interest (including post-petition interest in any proceeding under any Bankruptcy Law) on overdue principal and
premium, if any, from time to time on demand at a rate that is 1% per annum in excess of 4.20% to the extent lawful; it will pay interest (including post-petition interest in any proceeding under any Bankruptcy Law) on overdue

  
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installments of interest (without regard to any applicable grace periods) from time to time on demand at a rate that is 1% per annum in excess of 4.20% to the extent lawful. 

2.05 Place of Payment. The place or places where the principal of and interest on the 2024 Notes shall be payable is the office or
agency of the Company maintained for such purpose, which shall initially be the Corporate Trust Office of the Trustee, and any other place or places designated by the Company pursuant to the Indenture, provided that while the 2024 Notes are
represented by one or more Registered Global Securities registered in the name of the Depositary, or its nominee, the Company will cause payments of principal and interest on such Registered Global Securities to be made to the Depositary or its
nominee, as the case may be, by wire transfer to the extent, in the funds and in the manner required by agreements with, or regulations or procedures prescribed from time to time by the Depositary or its nominee, and otherwise in accordance with
such agreements, regulations or procedures. 
 2.06 Place of Registration or Exchange; Notices and Demands With Respect to the
2024 Notes. The place where the Holders of the 2024 Notes may present the 2024 Notes for registration of transfer or exchange and may make notices and demands to or upon the Company in respect of the 2024 Notes shall be the Corporate Trust
Office of the Trustee. 
 2.07 Global Notes. 

(a) The 2024 Notes shall be issuable in whole or in part in the form of one or more global notes (the “Global Notes”) in
definitive, full registered, book-entry form, without interest coupons, only in denominations of $2,000 and integral multiples of $1,000 in excess of $2,000. The Global Notes shall be deposited on their Original Issue Date with, or on behalf of, the
Depositary. 
 (b) The Depository Trust Company (“DTC”) shall initially serve as Depositary with respect to the Global
Notes. Such Global Notes shall bear the legend set forth in the form of 2024 Notes attached as Exhibit A. 
 2.08 Form of
Securities. The Global Notes shall be substantially in the form attached as Exhibit A. The notation of the Note Guarantee of each Subsidiary Guarantor (the “Notation of Guarantee”) shall be substantially in the form attached as
Exhibit B. 
 2.09 Note Registrar. The Trustee shall initially serve as the Note Registrar for the 2024 Notes. 

2.10 Sinking Fund Obligations. The Company shall have no obligation to redeem or purchase any 2024 Notes pursuant to any sinking fund
or analogous requirement. 
 2.11 Offer to Repurchase Upon Change of Control Repurchase Event. 

(a) Upon the occurrence of a Change of Control Repurchase Event, the Company will make an offer (a “Change of Control Offer”)
to each Holder of the 2024 Notes to repurchase all or any part (equal to $2,000 or integral multiples of $1,000 in excess of $2,000) of that Holder’s 2024 Notes at a purchase price in cash equal to 101% of the aggregate principal amount of 2024
Notes repurchased plus accrued and unpaid interest on the 2024 Notes repurchased to the 

  
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date of repurchase, subject to the rights of Holders of the 2024 Notes on the relevant record date to receive interest due on the relevant interest payment date (the “Change of Control
Payment”). Within 30 days following any Change of Control Repurchase Event, the Company will mail or deliver in accordance with DTC procedures a notice to each Holder and the Trustee describing the transaction or transactions that
constitute the Change of Control Repurchase Event and stating: 
 (1) that the Change of Control Offer is being made pursuant
to this section of the Fourth Supplemental Indenture and that all 2024 Notes tendered will be accepted for payment; 
 (2)
the purchase price and the purchase date, which shall be no earlier than 30 days and no later than 60 days from the date such notice is mailed (the “Change of Control Payment Date”); 

(3) that any 2024 Note not tendered will continue to accrue interest; 

(4) that, unless the Company defaults in the payment of the Change of Control Payment, all 2024 Notes accepted for payment
pursuant to the Change of Control Offer will cease to accrue interest after the Change of Control Payment Date; 
 (5) that
Holders electing to have any 2024 Notes purchased pursuant to a Change of Control Offer will be required to surrender the 2024 Notes, with the form entitled “Option of Holder to Elect Purchase” attached to the 2024 Notes completed, or
transfer by book-entry transfer, to the Paying Agent at the address specified in the notice prior to the close of business on the third Business Day preceding the Change of Control Payment Date; 

(6) that Holders of the 2024 Notes will be entitled to withdraw their election if the Paying Agent receives, not later than the
close of business on the second Business Day preceding the Change of Control Payment Date, a telegram, telex, facsimile transmission or letter setting forth the name of such Holder, the principal amount of 2024 Notes delivered for purchase, and a
statement that such Holder is withdrawing his election to have the 2024 Notes purchased; and 
 (7) that Holders whose 2024
Notes are being purchased only in part will be issued new 2024 Notes equal in principal amount to the unpurchased portion of the 2024 Notes surrendered, which unpurchased portion must be equal to $2,000 in principal amount or an integral multiple of
$1,000 in excess of $2,000. 
 The Company will comply with the requirements of Rule 14e-1 under the Exchange Act and any other securities
laws and regulations thereunder to the extent those laws and regulations are applicable in connection with the repurchase of the 2024 Notes as a result of a Change of Control Repurchase Event. To the extent that the provisions of any securities laws
or regulations conflict with the provisions of this Section 2.11, the Company will comply with the applicable securities laws and regulations and will not be deemed to have breached its obligations under this Section 2.11 by virtue of such
compliance. 

  
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 (b) On the Change of Control Payment Date, the Company will, to the extent lawful: 

(1) accept for payment all the 2024 Notes or portions of the 2024 Notes properly tendered pursuant to the Change of Control
Offer; 
 (2) deposit with the Paying Agent an amount equal to the Change of Control Payment in respect of all the 2024 Notes
or portions of the 2024 Notes properly tendered; and 
 (3) deliver or cause to be delivered to the Trustee the 2024 Notes
properly accepted together with an Officers’ Certificate stating the aggregate principal amount of the 2024 Notes or portions of the 2024 Notes being purchased by the Company. 

The Paying Agent will promptly mail (but in any case not later than five days after the Change of Control Payment Date) to each Holder of the
2024 Notes properly tendered the Change of Control Payment for such 2024 Notes, and the Trustee will promptly authenticate and mail (or cause to be transferred by book entry) to each Holder a new 2024 Note equal in principal amount to any
unpurchased portion of the 2024 Notes surrendered, if any. The Company will publicly announce the results of the Change of Control Offer on or as soon as practicable after the Change of Control Payment Date. 

(c) Notwithstanding anything to the contrary herein, the Company will not be required to make a Change of Control Offer upon a Change of
Control Repurchase Event if a third party makes the Change of Control Offer in the manner, at the times and otherwise in compliance with the requirements set forth herein and purchases all 2024 Notes properly tendered and not withdrawn under
the Change of Control Offer. 
 2.12 Other Terms. The provisions of Article Three and Article Four shall apply to the 2024 Notes as
set forth therein. 
 ARTICLE THREE 

Optional Redemption of the 2024 Notes 

3.01 Redemption Price Prior to the Optional Redemption Date. The Company shall have the right to redeem the 2024 Notes, at its option,
in whole at any time or in part from time to time. If the Company redeems the 2024 Notes prior to the Optional Redemption Date, the Company shall pay a redemption price equal to the greater of: 

(a) 100% of the principal amount of the 2024 Notes to be redeemed; and 

(b) as determined by the Quotation Agent, the sum of the present values of the remaining scheduled payments of principal and interest on the
2024 Notes being redeemed (excluding any portion of such payments of interest accrued as of the date of redemption), discounted to the date of redemption on a semi-annual basis (assuming a 360-day year consisting of twelve 30-day months) at the
Treasury Rate, plus 35 basis points; 
 plus, in each case, accrued and unpaid interest thereon to, but not including, the

  
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redemption date. 
 3.02 Redemption Price On or After the Optional Redemption
Date. At any time on or after the Optional Redemption Date, the Company shall have the right to redeem the 2024 Notes, at its option, in whole at any time or in part from time to time, at a redemption price of 100% of the principal amount of the
2024 Notes to be redeemed, plus accrued and unpaid interest thereon to, but not including, the redemption date. 
 ARTICLE FOUR 

Modification of Section 4.07 of the Original Indenture 

Section 4.07 of the Original Indenture is hereby amended and restated solely with respect to the 2024 Notes and any other series of
Securities issued pursuant to the Indenture after the date hereof (such affected Securities, the “Affected Securities”) (but, for the avoidance of doubt, not with respect to any series of Securities issued under the Indenture prior to the
date hereof (each, an “Outstanding Series”) or any additional Securities of an Outstanding Series issued under the Indenture after the date hereof) as follows, and all references in the Original Indenture to Section 4.07 thereof and
to the provisions specified therein shall, with respect to the 2024 Notes and each other Affected Security, be deemed to be references to this Article Four and to the provisions specified herein, respectively: 

“Section 4.07. Reports by the Company. 

(a) The Company and each Subsidiary Guarantor covenants to file with the Trustee, within 15 days after the Company and each Subsidiary
Guarantor is required to file with the Commission, copies of the annual reports and of the information, documents, and other reports which the Company and each Subsidiary Guarantor is required to file with the Commission pursuant to Section 13
or Section 15(d) of the Exchange Act. Delivery of such reports, information and documents to the Trustee is for informational purposes only and the Trustee’s receipt of such shall not constitute notice or constructive notice of any
information contained therein or determinable from information contained therein, including the Company’s or any Subsidiary Guarantor’s compliance with any of its covenants hereunder (as to which the Trustee is entitled to rely exclusively
on Officers’ Certificates or certificates delivered to the Trustee pursuant to Section 4.03); and 
 (b) If the Company is not
subject to the reporting requirements pursuant to Section 13 or 15(d) of the Exchange Act, so long as any Securities are outstanding, the Company will furnish to the Trustee and the Holders, no later than 90 days after the end of each fiscal
year (in the case of annual financial statements) and 45 days after the end of each fiscal quarter other than the last fiscal quarter (in the case of quarterly financial statements), audited annual consolidated financial statements and unaudited
quarterly consolidated financial statements, which may be condensed (including balance sheets, statements of earnings, statements of comprehensive earnings and statements of cash flows that would be required from a Commission registrant on an Annual
Report on Form 10-K or a Quarterly Report on Form 10-Q, as the case may be), prepared in accordance with GAAP, subject, with respect to the quarterly financial statements, as modified 

  
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by the applicable rules of the Commission, all reported on by independent public accountants of recognized national standing.” 

ARTICLE FIVE 

Miscellaneous Provisions 

5.01 The Indenture, as supplemented by this Fourth Supplemental Indenture, is in all respects hereby adopted, ratified and confirmed. 

5.02 This Fourth Supplemental Indenture may be executed in any number of counterparts, each of which shall be an original, but such
counterparts shall together constitute but one and the same instrument. The exchange of copies of this Fourth Supplemental Indenture and of signature pages by facsimile or PDF transmission shall constitute effective execution and delivery of this
Fourth Supplemental Indenture as to the parties hereto and may be used in lieu of the original Fourth Supplemental Indenture for all purposes. Signatures of the parties hereto transmitted by facsimile or PDF shall be deemed to be their original
signatures for all purposes. 
 5.03 THIS FOURTH SUPPLEMENTAL INDENTURE AND EACH 2024 NOTE SHALL BE GOVERNED BY AND DEEMED TO BE A CONTRACT
MADE UNDER, AND CONSTRUED IN ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW YORK AND FOR ALL PURPOSES SHALL BE CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK WITHOUT REGARD TO CONFLICTS OF LAWS PRINCIPLES THEREOF. 

5.04 If any provision in this Fourth Supplemental Indenture limits, qualifies or conflicts with another provision hereof that is required to
be included herein by any provisions of the Trust Indenture Act, such required provision shall control. 
 5.05 In case any provision in
this Fourth Supplemental Indenture or the 2024 Notes shall be invalid, illegal or unenforceable, the validity, legality and enforceability of the remaining provisions shall not in any way be affected or impaired thereby. 

5.06 The recitals contained herein shall be taken as the statements of the Company, and the Trustee assumes no responsibility for their
correctness. The Trustee makes no representations as to the proper authorization or due execution hereof or of the 2024 Notes by the Company or the Subsidiary Guarantors or as to the validity or sufficiency of this Fourth Supplemental Indenture, any
Notation of Guarantee or the 2024 Notes. The Trustee shall not be accountable for the use or application by the Company of the 2024 Notes or the proceeds of the 2024 Notes. 

*        *        *       
 * 

  
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 IN WITNESS WHEREOF, the parties hereto have caused this Fourth Supplemental Indenture to be duly
executed as of the day and year first above written. 
  

			
	OWENS CORNING
		
	By:	 	 /s/ Michael McMurray

	Name:	 	Michael McMurray
	Title:	 	 Senior Vice President and Chief Financial Officer

		
	By:	 	 /s/ John W. Christy

	Name:	 	John W. Christy
	Title:	 	 Senior Vice President, General Counsel and Secretary

	
	 CDC CORPORATION,
 ENGINEERED PIPE
SYSTEMS, INC.,
 ERIC COMPANY,
 IPM INC.,

OCCV1, INC.,
 OCCV2, LLC,

OWENS CORNING COMPOSITE MATERIALS, LLC,
 OWENS CORNING
CONSTRUCTION SERVICES, LLC,
 OCV INTELLECTUAL CAPITAL, LLC,

OWENS CORNING FOAM INSULATION, LLC,
 OWENS CORNING FRANCHISING,
LLC,
 OWENS-CORNING FUNDING CORPORATION,
 OWENS CORNING
HOMEXPERTS, INC.,
 OWENS CORNING HT, INC.,
 OWENS CORNING
INSULATING SYSTEMS, LLC,
 OWENS CORNING INTELLECTUAL CAPITAL, LLC,

OWENS CORNING ROOFING AND ASPHALT, LLC,
 OWENS CORNING SALES,
LLC,
 OWENS CORNING SCIENCE AND TECHNOLOGY, LLC,
 OWENS CORNING
U.S. HOLDINGS, LLC, and
 SOLTECH, INC.

		
	By:	 	 /s/ John W. Christy

	Name:	 	John W. Christy
	Title:	 	Authorized Signatory
	
	OC CANADA HOLDINGS GENERAL PARTNERSHIP by OC CANADA HOLDINGS COMPANY, its Managing Partner
		
	By:	 	 /s/ Lisa Lay

	Name:	 	Lisa Lay
	Title:	 	Authorized Signatory

 
			
	 WELLS FARGO BANK, NATIONAL

ASSOCIATION, as Trustee

		
	By:	 	/s/ Gregory S. Clarke
	Name:	 	Gregory S. Clarke
	Title:	 	Vice President

 Exhibit A 

FORM OF NOTE CERTIFICATE 
  

 
  
  

 
 CUSIP/ISIN: 690742 AE1 / US690742AE13 

4.20% Senior Notes due 2024 
  

			
	 No. 1
	  	$400,000,000

 Owens Corning 

promises to pay to Cede & Co., or registered assigns, 

the principal sum of $400,000,000 on December 1, 2024. 

Interest Payment Dates: June 1 and December 1 
 Record
Dates: May 15 and November 15 
 Dated: November 12, 2014 
  

 

			
	Owens Corning
		
	By:	 	  

			
	Name:	 	
	Title:	 	

  
 This is one of the Securities referred to 

in the within-mentioned Indenture: 
  

			
	 WELLS FARGO BANK, NATIONAL ASSOCIATION,

    as Trustee

		
	By:	 	  

		 	Authorized Signatory

  
  

  
 A-1 

 4.20% Senior Notes due 2024 

THIS SECURITY IS A REGISTERED GLOBAL SECURITY WITHIN THE MEANING OF THE INDENTURE HEREINAFTER REFERRED TO AND IS REGISTERED IN THE NAME OF A DEPOSITARY OR A
NOMINEE THEREOF. THIS SECURITY IS EXCHANGEABLE FOR SECURITIES REGISTERED IN THE NAME OF A PERSON OTHER THAN THE DEPOSITARY OR ITS NOMINEE ONLY IN THE LIMITED CIRCUMSTANCES DESCRIBED IN THE INDENTURE AND, UNLESS AND UNTIL IT IS EXCHANGED IN WHOLE OR
IN PART FOR SECURITIES IN DEFINITIVE REGISTERED FORM, THIS SECURITY MAY NOT BE TRANSFERRED EXCEPT AS A WHOLE BY THE DEPOSITARY TO THE NOMINEE OF THE DEPOSITARY OR BY A NOMINEE OF THE DEPOSITARY TO THE DEPOSITARY OR ANOTHER NOMINEE OF THE DEPOSITARY
OR BY THE DEPOSITARY OR ANY SUCH NOMINEE TO A SUCCESSOR DEPOSITARY OR A NOMINEE OF SUCH SUCCESSOR DEPOSITARY. 
 Capitalized terms used
herein have the meanings assigned to them in the Indenture referred to below unless otherwise indicated. 
 (1)
INTEREST. Owens Corning, a Delaware corporation (the “Company”), promises to pay interest on the principal amount of this Security at 4.20% per annum from November 12, 2014 until maturity. The Company will pay
interest semi-annually in arrears on June 1 and December 1 of each year, or if any such day is not a Business Day, on the next succeeding Business Day (each, an “Interest Payment Date”). Interest on the Securities will
accrue from the most recent date to which interest has been paid or, if no interest has been paid, from the date of issuance; provided that if there is no existing Default in the payment of interest, and if this Security is authenticated
between a record date referred to on the face hereof and the next succeeding Interest Payment Date, interest shall accrue from such next succeeding Interest Payment Date; provided further that the first Interest Payment Date shall be
June 1, 2015. The Company will pay interest (including post-petition interest in any proceeding under any Bankruptcy Law) on overdue principal and premium, if any, from time to time on demand at a rate that is 1% per annum in excess of
4.20% to the extent lawful; it will pay interest (including post-petition interest in any proceeding under any Bankruptcy Law) on overdue instalments of interest (without regard to any applicable grace periods) from time to time on demand at a rate
that is 1% per annum in excess of 4.20% to the extent lawful. Interest will be computed on the basis of a 360-day year of twelve 30-day months. 

(2) METHOD OF PAYMENT. The Company will pay interest on the Securities (except defaulted interest) to the Persons who
are registered Holders of Securities at the close of business on the May 15 or November 15 next preceding the Interest Payment Date, even if such Securities are cancelled after such record date and on or before such Interest Payment Date,
except as provided in Section 2.13 of the Indenture with respect to defaulted interest. The Securities will be payable as to principal, premium, if any, and interest at the office or agency of the Company maintained for such purpose within or
without the City of Chicago in the State of Illinois, or, at the option of the Company, payment of interest may be made by check mailed to the Holders at their addresses set forth in the register of Holders; provided that payment by wire
transfer of immediately available funds will be required with respect to principal of and interest and premium, if any, on, all Global Securities and all other Securities the Holders of which will have provided wire transfer instructions to the
Company or the Paying Agent. Such payment will be in such coin or currency of the United States of America as at the time of payment is legal tender for payment of public and private debts. 

(3) PAYING AGENT AND REGISTRAR. Initially, Wells Fargo Bank, National Association, the Trustee under the Indenture, will
act as Paying Agent and Registrar. The Company may change any Paying Agent or Registrar without notice to any Holder. The Company or any Affiliate of the Company may act in any such capacity. 

(4) INDENTURE. The Company issued the Securities under an Indenture (the “Original Indenture”), dated
as of June 2, 2009 (as supplemented by the First Supplemental Indenture, dated as of June 8, 2009, the Second Supplemental Indenture, dated as of May 26, 2010, the Third Supplemental 

  
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Indenture, dated as of October 22, 2012 and the Fourth Supplemental Indenture (the “Fourth Supplemental Indenture”), dated as of November 12, 2014, the
“Indenture”) among the Company, the Subsidiary Guarantors party thereto and the Trustee. The terms of the Securities include those stated in the Indenture and those made part of the Indenture by reference to the Trust Indenture Act
(the “TIA”). The Third Supplemental Indenture modifies Section 4.10 of the Original Indenture as it applies to the Securities. The Fourth Supplemental Indenture modifies Section 4.07 of the Original Indenture as it applies
to the Securities. The Securities are subject to all such terms, and Holders are referred to the Indenture and the TIA for a statement of such terms. To the extent any provision of this Security conflicts with the express provisions of the
Indenture, the provisions of the Indenture shall govern and be controlling. The Securities are unsecured obligations of the Company. The Indenture does not limit the aggregate principal amount of Securities that may be issued thereunder. 

(5) OPTIONAL REDEMPTION. 

(a) The Company may redeem, in whole at any time or in part from time to time, any Securities, at its option. If the Company
elects to redeem the Securities prior to the Optional Redemption Date, the Company will pay a redemption price equal to the greater of (i) 100% of the principal amount of the Securities to be redeemed and (ii) as determined by the
Quotation Agent, the sum of the present values of the remaining scheduled payments of principal and interest on the Securities to be redeemed (excluding any portion of such payments of interest accrued as of the date of redemption), discounted to
the date of redemption on a semi-annual basis (assuming a 360-day year, consisting of twelve 30-day months) at the Treasury Rate plus 35 basis points, plus, in each case, accrued and unpaid interest thereon to, but not including, the date of
redemption. If the Company elects to redeem the Securities on or after the Optional Redemption Date, the redemption price will equal 100% of the aggregate principal amount of the notes being redeemed, plus accrued and unpaid interest thereon to, but
not including, the date of redemption. 
 (b) Unless the Company defaults in payment of the redemption price, on and after
the date of redemption, interest will cease to accrue on the Securities or portions thereof called for redemption. 
 (c) Any
redemption pursuant to Article 3 of the Indenture shall be made pursuant to the provisions of Sections 3.01 through 3.05 of the Indenture. 

(6) REPURCHASE AT THE OPTION OF HOLDER. If there is a Change of Control Repurchase Event, the Company will be required
to make an offer (a “Change of Control Offer”) to each Holder to repurchase all or any part (equal to $2,000 or integral multiples of $1,000 in excess of $2,000) of each Holder’s Securities at a purchase price in cash equal to
101% of the aggregate principal amount thereof plus accrued and unpaid interest thereon to the date of repurchase, subject to the rights of Holders on the relevant record date to receive interest due on the relevant Interest Payment Date (the
“Change of Control Payment”). Within 30 days following any Change of Control Repurchase Event, the Company will mail a notice to each Holder setting forth the procedures governing the Change of Control Offer as required by the
Indenture. 
 (7) NOTICE OF REDEMPTION. Notice of redemption will be mailed at least 30 days but not more than 60 days
before the redemption date to each Holder whose Securities are to be redeemed at its registered address. Securities in denominations larger than $2,000 may be redeemed in part but only in whole multiples of $1,000, unless all of the Securities held
by a Holder are to be redeemed. 
 (8) DENOMINATIONS, TRANSFER, EXCHANGE. The Securities are in registered form
without coupons in denominations of $2,000 and integral multiples of $1,000 in excess of $2,000. The transfer of Securities may be registered and Securities may be exchanged as provided in the Indenture. The Registrar and the Trustee may require a
Holder, among other things, to furnish appropriate endorsements and transfer documents and the Company may require a Holder to pay any taxes and fees required by law or permitted by the Indenture. The Company need not exchange or register the
transfer of any Security or portion of a Security selected for redemption, except for the unredeemed portion of any Security being redeemed in part. Also, the Company need not exchange or register the transfer of any Securities for a period of 15
days before a selection of Securities to be redeemed or during the period between a record date and the corresponding Interest Payment Date. 

  
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 (9) PERSONS DEEMED OWNERS. The registered Holder of a Security may be
treated as its owner for all purposes. 
 (10) AMENDMENT, SUPPLEMENT AND WAIVER. Subject to certain exceptions, the
Indenture or the Securities or the Note Guarantees may be amended or supplemented with the consent of the Holders of at least a majority in aggregate principal amount of the then outstanding Securities including additional Securities, if any, voting
as a single class, and any existing Default or Event of Default or compliance with any provision of the Indenture or the Securities or Note Guarantees may be waived with the consent of the Holders of a majority in aggregate principal amount of the
then outstanding Securities including additional Securities, if any, voting as a single class. Without the consent of any Holder of a Security, the Indenture or the Securities or Note Guarantees may be amended or supplemented to correct any mistakes
or defects in the Indenture, but only if such action does not adversely affect the interests of the Holders of the Securities in any material respect or otherwise amend the Indenture in any respect that does not adversely affect the interests of the
Holders of the Securities; to add or change any of the provisions of the Indenture relating to the issuance or exchange of the Securities in registered form, but only if such action does not adversely affect the interests of the Holders of the
Securities or related coupons in any material respect; to provide for the assumption of the Company’s or a Subsidiary Guarantor’s obligations to Holders of the Securities and Note Guarantees by a successor Person; to impose additional
covenants and Events of Default or to add Note Guarantees of other Persons for the benefit of the Holders; to change or eliminate any of the provisions of the Indenture, but only if the change or elimination becomes effective when there are no
outstanding Securities or related coupons, which are entitled to the benefit of such provision and as to which such modification would apply; to secure the Securities; to comply with the requirements of the SEC in order to effect or maintain the
qualification of the Indenture under the TIA; to conform the text of the Indenture, the Securities or the Note Guarantees to any provision of the “Description of the Notes” section of the Company’s Prospectus Supplement dated as of
November 4, 2014, relating to the initial offering of the Securities, to the extent that such provision in that “Description of the Notes” was intended to be a verbatim recitation of a provision of the Indenture, the Note Guarantees
or the Securities; to supplement any of the provisions of the Indenture to permit or facilitate the defeasance and discharge of the Securities, but only if such action does not adversely affect the interests of the Holders of the Securities or
related coupons in any material respect; to establish the form or terms of the Securities or related coupons, as permitted by the Indenture; to evidence and provide for the acceptance of appointment by a successor Trustee and to add to or change any
of the provisions of the Indenture to facilitate the administration of the trusts by more than one Trustee or to allow any Subsidiary Guarantor to execute a supplemental indenture to the Indenture and/or a Note Guarantee with respect to the
Securities. 
 (11) DEFAULTS AND REMEDIES. Events of Default include: (i) default for 30 days in the payment when
due of interest on the Securities; (ii) default in the payment when due (at maturity, upon redemption or otherwise) of the principal of, or premium, if any, on, the Securities, (iii) failure by the Company or any of its Subsidiaries for 60
days after notice to the Company by the Trustee or the Holders of at least 25% in aggregate principal amount of the Securities then outstanding voting as a single class to comply with any of the other agreements in the Indenture or the Securities;
(iv) default under certain other agreements relating to Indebtedness for money borrowed by the Company or any of its Subsidiaries, which default is a Payment Default or results in the acceleration of such Indebtedness prior to its express
maturity, but only if the aggregate principal amount of such Indebtedness under which there has been a Payment Default or which has been accelerated is $75 million or more; (v) certain events of bankruptcy or insolvency with respect to the
Company or any of its Subsidiaries that is a Significant Subsidiary or any group of Subsidiaries that, taken together, would constitute a Significant Subsidiary; and (vi) except as permitted by the Indenture, any Note Guarantee is held in any
judicial proceeding to be unenforceable or invalid or ceases for any reason to be in full force and effect or any Subsidiary Guarantor or any Person acting on its behalf denies or disaffirms its obligations under such Subsidiary Guarantor’s
Note Guarantee. If any Event of Default occurs and is continuing, the Trustee or the Holders of at least 25% in aggregate principal amount of the then outstanding Securities may declare all the Securities to be due and payable immediately.
Notwithstanding the foregoing, in the 

  
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case of an Event of Default arising from certain events of bankruptcy or insolvency, all outstanding Securities will become due and payable immediately without further action or notice. Holders
may not enforce the Indenture or the Securities except as provided in the Indenture. Subject to certain limitations, Holders of a majority in aggregate principal amount of the then outstanding Securities may direct the Trustee in its exercise of any
trust or power. The Trustee may withhold from Holders of the Securities notice of any continuing Default or Event of Default (except a Default or Event of Default relating to the payment of principal or interest or premium, if any) if it determines
that withholding notice is in their interest. The Holders of a majority in aggregate principal amount of the then outstanding Securities by notice to the Trustee may, on behalf of the Holders of all of the Securities, rescind an acceleration or
waive any existing Default or Event of Default and its consequences under the Indenture except a continuing Default or Event of Default in the payment of interest or premium on, or the principal of, the Securities. The Company is required to deliver
to the Trustee annually a statement regarding compliance with the Indenture, and the Company is required, upon becoming aware of any Default or Event of Default, to deliver to the Trustee a statement specifying such Default or Event of Default. 

(12) TRUSTEE DEALINGS WITH COMPANY. The Trustee, in its individual or any other capacity, may make loans to, accept
deposits from, and perform services for the Company or its Affiliates, and may otherwise deal with the Company or its Affiliates, as if it were not the Trustee. 

(13) NO RECOURSE AGAINST OTHERS. A director, officer, employee, incorporator or stockholder of the Company or any of the
Subsidiary Guarantors, as such, will not have any liability for any obligations of the Company or the Subsidiary Guarantors under the Securities, the Note Guarantees or the Indenture or for any claim based on, in respect of, or by reason of, such
obligations or their creation. Each Holder by accepting a Security waives and releases all such liability. The waiver and release are part of the consideration for the issuance of the Securities. 

(14) AUTHENTICATION. This Security will not be valid until authenticated by the manual signature of the Trustee or an
authenticating agent. 
 (15) ABBREVIATIONS. Customary abbreviations may be used in the name of a Holder or an
assignee, such as: TEN COM (= tenants in common), TEN ENT (= tenants by the entireties), JT TEN (= joint tenants with right of survivorship and not as tenants in common), CUST (= Custodian), and U/G/M/A (= Uniform Gifts to Minors Act). 

(16) CUSIP NUMBERS. Pursuant to a recommendation promulgated by the Committee on Uniform Security Identification
Procedures, the Company has caused CUSIP numbers to be printed on the Securities, and the Trustee may use CUSIP numbers in notices of redemption as a convenience to Holders. No representation is made as to the accuracy of such numbers either as
printed on the Securities or as contained in any notice of redemption, and reliance may be placed only on the other identification numbers placed thereon. 

(17) GOVERNING LAW. THE INTERNAL LAW OF THE STATE OF NEW YORK WILL GOVERN AND BE USED TO CONSTRUE THE INDENTURE, THIS
SECURITY AND THE NOTE GUARANTEES 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. 

The Company will furnish to any Holder upon written request and without charge a copy of the Indenture. Requests may be made to: 

Owens Corning 
 One Owens Corning Parkway 

Toledo, OH 43659 
 Attention: Investor Relations 

  
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 ASSIGNMENT FORM 

To assign this Security, fill in the form below: 
  

			
	(I) or (we) assign and transfer this Security to: 	  	  

			
	  
	  	

 (Insert assignee’s legal name) 
  

 
 (Insert assignee’s soc. sec. or
tax I.D. no.) 
  
  

 
  
  

 
  

 
 (Print or type assignee’s name,
address and zip code) 
  

			
	and irrevocably appoint 	 	  

			
	  
	 	

 to transfer this Security on the books of the Company. The agent may substitute another to act for him. 

 

			
	 Date:
	 	  

  

			
	Your Signature:	 	  

	(Sign exactly as your name appears on the face of this Security)

 

			
	Signature Guarantee*: 	 	  

  
  

	*	Participant in a recognized Signature Guarantee Medallion Program (or other signature guarantor acceptable to the Trustee). 

  
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 Option of Holder to Elect Purchase 

If you want to elect to have this Security purchased by the Company pursuant to Section 2.11 of the Fourth Supplemental Indenture, check
the box below: 
  ̈ Section 2.11 

If you want to elect to have only part of the Security purchased by the Company pursuant to Section 2.11 of the Fourth Supplemental
Indenture, state the amount you elect to have purchased: 

$                       
  
 Date:                     

  

	
	Your Signature:                                
                                         
               
	(Sign exactly as your name appears on the face of this Security)

  

	
	Tax Identification No.:                              
   

 Signature Guarantee*:
                                     

 
  

	*	Participant in a recognized Signature Guarantee Medallion Program (or other signature guarantor acceptable to the Trustee). 

  
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 SCHEDULE OF EXCHANGES OF INTERESTS IN THE GLOBAL SECURITY 

The following exchanges of a part of this Registered Global Security for an interest in another Registered Global Security or for a definitive
Registered Security, or exchanges of a part of another Registered Global Security or definitive Registered Security for an interest in this Registered Global Security, have been made: 

 

									
	 Date of Exchange
	  	Amount of decrease in
Principal Amount
of
this Global Security	  	Amount of increase in
Principal Amount
of
this Global Security	  	Principal Amount
of this Global Security
following such
decrease
(or increase)	  	Signature of authorized
officer of Trustee or
Custodian
		  		  		  		  	
		  		  		  		  	
		  		  		  		  	

  
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 Exhibit B 

FORM OF NOTATION OF GUARANTEE 

For value received, each Subsidiary Guarantor (which term includes any successor Person under the Indenture) has, jointly and severally,
unconditionally guaranteed, to the extent set forth in the Indenture and subject to the provisions in the Indenture dated as of June 2, 2009 (as supplemented by the First Supplemental Indenture dated as of June 8, 2009, the Second
Supplemental Indenture, dated May 26, 2010, the Third Supplemental Indenture dated October 22, 2012 and the Fourth Supplemental Indenture dated November 12, 2014, the “Indenture”) among Owens Corning, (the
“Company”), the Subsidiary Guarantors party thereto and Wells Fargo Bank, National Association, as trustee (the “Trustee”), (a) the due and punctual payment of the principal of, premium, if any, and interest
on, the Securities when due, whether at maturity, by acceleration or otherwise, the due and punctual payment of interest on overdue principal of and interest on the Securities, if any, if lawful, and the due and punctual performance of all other
obligations of the Company to the Holders or the Trustee all in accordance with the terms of the Indenture and (b) in case of any extension of time of payment or renewal of any Securities or any of such other obligations, that the same will be
promptly paid in full when due or performed in accordance with the terms of the extension or renewal, whether at stated maturity, by acceleration or otherwise. The obligations of the Subsidiary Guarantors to the Holders of Securities and to the
Trustee pursuant to the Note Guarantee and the Indenture are expressly set forth in Article 10 of the Indenture and reference is hereby made to the Indenture for the precise terms of the Note Guarantee. 

Capitalized terms used but not defined herein have the meanings given to them in the Indenture. 

  
 B-1 

 
			
	[GUARANTOR]
		
	By	 	  

		 	Name:
		 	Title:

  
 B-2EX-10.1

 Exhibit 10.1 

AMENDMENT NUMBER ONE TO AMENDED AND RESTATED CREDIT AGREEMENT 

THIS AMENDMENT NUMBER ONE TO AMENDED AND RESTATED CREDIT AGREEMENT (this “Amendment”), dated as of June 24, 2014,
is entered into by and among LANTHEUS MI INTERMEDIATE, INC., a Delaware corporation (the “Parent”), LANTHEUS MEDICAL IMAGING, INC., a Delaware corporation (the “Borrower”), the lenders identified on
the signature pages hereof (such lenders, and the other lenders party to the below-defined Credit Agreement, together with their respective successors and permitted assigns, each individually, a “Lender”, and collectively, the
“Lenders”), each subsidiary of the Parent listed as a “Guarantor” on the signature pages hereto (together with the Parent, each a “Guarantor” and individually and collectively, jointly and severally, the
“Guarantors”; Borrower and Guarantors, each a “Loan Party” and individually and collectively, jointly and severally, the “Loan Parties”), and WELLS FARGO BANK, NATIONAL ASSOCIATION, a
national banking association, in its capacity as collateral agent for the Lenders (in such capacity, together with its successors and assigns in such capacity, if any, the “Collateral Agent”) and as administrative agent for the
Lenders (in such capacity, together with its successors and assigns in such capacity, if any, the “Administrative Agent”), and in light of the following: 

W I T N E S S E T H 

WHEREAS, Loan Parties, Lenders, Agents, and the other parties signatory thereto are parties to that certain Amended and Restated Credit
Agreement, dated as of July 3, 2013 (as amended, restated, supplemented, or otherwise modified from time to time, the “Credit Agreement”); 

WHEREAS, Loan Parties have requested that Agents and Lenders make certain amendments to the Credit Agreement; 

WHEREAS, upon the terms and conditions set forth herein, Agents and Lenders are willing to make certain amendments to the Credit
Agreement. 
 NOW, THEREFORE, in consideration of the foregoing and the mutual covenants herein contained, and for other good and
valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the parties hereby agree as follows: 

1.    Defined Terms. All initially capitalized terms used herein (including the preamble and recitals hereof)
without definition shall have the meanings ascribed thereto in the Credit Agreement. 
 2.    Amendments to Credit
Agreement. Subject to the satisfaction (or waiver in writing by Agent) of the conditions precedent set forth in Section 3 hereof, the Credit Agreement shall be amended as follows: 

(a)    Section 1.01 of the Credit Agreement is hereby amended by amending and restating or adding (as the case
may be) each of the following defined terms in their entirety: 
 “Applicable Margin” means, for any day, (a) with
respect to any Reference Rate Loan, 1.00%, and (b) with respect to any LIBOR Rate Loan, 2.00%. 
 “Change of Control”
means each occurrence of any of the following: 
 (a)    prior to a Qualifying IPO, the Sponsor shall cease to
beneficially and of record own and control, directly or indirectly, at least 51% on a fully diluted basis of the aggregate ordinary voting power of the Capital Stock of the Parent; 

  
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 (b) on or after a Qualifying IPO, any “person” or “group” (as such terms are
used in Sections 13(d) and 14(d) of the Exchange Act, but excluding any employee benefit plan of such person and its subsidiaries and any person acting in its capacity as trustee, agent or other fiduciary or administrator of any such plan), shall
have acquired beneficial ownership, directly or indirectly, of the Capital Stock of Parent representing the greater of (i) 35% or more on a fully diluted basis of the aggregate ordinary voting power of the Capital Stock of the Parent, and
(ii) a percentage equal to or greater than the percentage owned and controlled by Sponsor on such date on a fully diluted basis of the aggregate ordinary voting power of the Capital Stock of the Parent; 

(c) the Parent shall cease to beneficially and of record own and control 100% on a fully diluted basis of the economic and voting interests
in the Capital Stock of the Borrower; 
 (d) the Parent shall cease to have beneficial ownership (as defined in Rule 13d-3 under the
Exchange Act) of 100% of the aggregate voting power of the Capital Stock of each other Loan Party, free and clear of all Liens (other than any Liens granted hereunder and Permitted Liens), except for any shares of Capital Stock of a Foreign
Subsidiary issued to directors to qualify such directors if so required by applicable law and as otherwise expressly permitted herein; or 

(e) the occurrence of any “Change of Control” as defined under the Senior Note Documents. 

“Commitment Fee Rate” means 0.375% per annum. 

“Excluded Contribution” has the meaning specified therefor in the Senior Note Indenture. 

“Inventory Threshold” means, as of any date of determination, the greater of (a) $20,000,000, and (b) the lesser
of (i) $22,500,000, and (ii) the sum of (y) $20,000,000, plus (z) the aggregate amount of M&E Depreciation Amounts that have resulted in a reduction to the amount set forth in clause (a) of the definition of M&E
Component since the Effective Date. 
 “Public Company Costs” means (a) costs, expenses and disbursements associated
with, related to or incurred in anticipation of, or preparation for compliance with (x) the requirements of the Sarbanes-Oxley Act of 2002 and the rules and regulations promulgated in connection therewith, (y) the provisions of the
Securities Act and the Exchange Act, as applicable to companies with equity or debt securities held by the public, and (z) the rules of national securities exchange companies with listed equity or debt securities, (b) costs and expenses
associated with investor relations, shareholder meetings and reports to shareholders or debtholders and listing fees, and (c) directors’ and officers’ compensation, fees, indemnification, expense reimbursement (including legal and
other professional fees, expenses and disbursements), and insurance. 
 (b)    The definition of “Consolidated
EBITDA” in Section 1.01 of the Credit Agreement is hereby amended by (i) adding the parenthetical “(including, without limitation, any such fees and expenses payable pursuant to the early termination of the Management
Services Agreement)” at the end of subclause (a)(i)(H) thereof before the comma (“,”), and (ii) deleting the “and” at the end of clause (a)(i)(L) thereof and adding the following new clause (a)(i)(N) immediately after
clause (a)(i)(M) thereof: 
 and (N) Public Company Costs, 

  
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 (c)    Sections 3.01(a)(i) and 3.01(a)(ii) of the Credit
Agreement are hereby amended and restated in their entirety as follows: 
 (i) shall specify (A) the amount of such Letter of Credit,
(B) the date of issuance, amendment, renewal, or extension of such Letter of Credit, (C) the proposed expiration date of such Letter of Credit, (D) the name and address of the beneficiary of the Letter of Credit, and (E) such
other information (including, the conditions to drawing, and, in the case of an amendment, renewal, or extension, identification of the Letter of Credit to be so amended, renewed, or extended) as shall be necessary to prepare, amend, renew, or
extend such Letter of Credit, (ii) if any Senior Notes are outstanding, shall be accompanied by a certification with respect to such Letter of Credit that is in the form of the certification contained in the second to last paragraph of Exhibit
D (but replacing each reference to “Proposed Revolving Loan” with “proposed Letter of Credit”), and (iii) shall be accompanied by such Issuer Documents as the L/C Issuer may request or require, to the extent that such
requests or requirements are consistent with the Issuer Documents that L/C Issuer generally requests for Letters of Credit in similar circumstances. L/C Issuer’s records of the content of any such request will be conclusive absent manifest
error. 
 (d)    Section 5.02 of the Credit Agreement is hereby amended by adding the following new clause
(d): 
 (d)    Senior Notes Documents. 

(i)    If any Senior Notes are outstanding, the making of such Revolving Loan or the issuance of such Letter of Credit to
Borrower shall not result in Borrower or any Guarantor being in breach of, or out of compliance with, Section 10.10 or Section 10.11 of the Senior Note Indenture. 

(ii)    If any Senior Notes are outstanding, if the making of such Revolving Loan or the issuance of such Letter of
Credit would cause the aggregate outstanding amount of the Revolving Loans and the outstanding Letter of Credit Obligations to exceed $42,500,000, (A) such excess amount of Indebtedness is permitted under a provision of Section 10.10 of
the Senior Note Indenture other than Section 10.10(1), (B) the Lien securing such excess amount of Indebtedness constitutes a “Permitted Lien” under, and as defined in, the Senior Note Indenture other than a “Permitted
Lien” under clause (19) of the definition of “Permitted Liens” set forth in the Senior Note Indenture, and (C) after giving effect to the incurrence of such excess amount of Indebtedness, Borrower would be able to incur an
additional $3,000,000 of secured Indebtedness under the Loan Documents under a provision of Section 10.10 of the Senior Note Indenture other than Section 10.10(1) and under a clause of the definition of “Permitted Liens” set
forth in the Senior Note other than clause (19) of the definition of “Permitted Liens” set forth in the Senior Note Indenture. 

(e)    Section 7.02(b) of the Credit Agreement is hereby amended by adding the following sentence at the end
thereof: 
 Permit any Indebtedness of Parent or its Subsidiaries to utilize the basket set forth in Section 10.10(1) of the Senior
Note Indenture other than Revolving Loans and Letter of Credit Obligations. 
 (f)    Section 7.02(c) of the
Credit Agreement is hereby amended by (i) deleting the phrase “the Borrower is the surviving Person in the case of any merger or consolidation involving the Borrower, and” from clause (i)(E) thereof, (ii) deleting the period at
the end of clause (ii)(L) thereof and replacing it with “; and”, and (iii) adding the following new clause (iii) at the end thereof: 

  
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 (iii)    Parent may merge with and into Ultimate Parent, so long as
(A) Parent gives the Agents at least 3 Business Days’ prior written notice of such merger, (B) no Default or Event of Default shall have occurred and be continuing either before or after giving effect to such transaction, (C) the
Agents’ and Lender’s rights in any Collateral (including the Capital Stock of Borrower), including, without limitation, the existence, perfection, and priority of any Lien thereon, are not adversely affected by such merger, (E) if
Ultimate Parent is the surviving Person of such merger, Ultimate Parent is joined as a Loan Party hereunder and becomes a party to a Guaranty and a Security Agreement (pursuant to which the Capital Stock of Borrower and any other Subsidiary of
Ultimate Parent is pledged to Collateral Agent), in each case, which is in full force and effect on the date of and immediately after giving effect to such merger, and (F) if Ultimate Parent is the surviving Person of such merger, after the
consummation of such merger, each reference in the Credit Agreement and the other Loan Documents to “Parent” shall be deemed to be a reference to “Ultimate Parent”. 

(g)    Section 7.02(h) of the Credit Agreement is hereby amended by (i) amending and restating clause
(A)(4) thereof as follows: (4) to pay Public Company Costs or any other amounts required for the Parent, the Ultimate Parent, or any direct or indirect parent thereof that is a holding company solely in respect of the Loan Parties to pay
reasonable fees and expenses, other than to Affiliates of the Borrower, directly related to any equity or debt offering of such Person where such transaction would not be prohibited by the terms hereof (whether or not such transaction is
successful), (ii) adding the following parenthetical to clause (H) thereof immediately prior to the semi-colon contained therein: (including any fees and actual out-of-pocket indemnities, reimbursements and reasonable expenses payable
under the Management Services Agreement (as in effect on the date hereof) as a result of the early termination thereof), (iii) deleting the “and” at the end of clause (I) thereof, (iv) deleting the period at the end of
clause (J) thereof and replacing it with “,”, and (v) adding the following new clause (K) immediately after clause (J) thereof: 

(K)    the declaration and payment of dividends on Parent’s common Capital Stock (or the payment of dividends to any
direct or indirect parent company of Parent to fund a payment of dividends on such company’s common Capital Stock), following consummation of the first Qualifying IPO of Parent’s common Capital Stock or the common Capital Stock of any
direct or indirect parent company of Parent after the Effective Date, of up to 6.00% per annum of the net cash proceeds received by or contributed to Parent in or from any such Qualifying IPO, other than any public sale constituting an Excluded
Contribution; provided that (x) no Event of Default exists at the time any such dividend is made, and (y) immediately after giving effect to each such dividend on a pro forma basis, Excess Availability is not less than $25,000,000.

 (h)    Section 7.02(j) of the Credit Agreement is hereby amended by (i) deleting the “and”
at the end of clause (iv) thereof, (ii) deleting the period at the end of clause (v) thereof and replacing it with “, and”, and (iii) adding the following new clause (vi) immediately after clause (v) thereof:

 (vi) the Borrower may pay any Public Company Costs directly on behalf of Parent or any direct or indirect parent thereof. 

(i)    Section 7.02(l)(v) of the Credit Agreement is hereby amended by amending and restating such clause in
its entirety as follows: 
 (v)    make any voluntary or optional payment, prepayment, redemption, defeasance, sinking
fund payment or other acquisition for value of any of its or its Subsidiaries’ Subject Indebtedness (including, without limitation, by way of depositing money or securities with the trustee therefor before the date required for the purpose of
paying any portion of such Subordinated Indebtedness 

  
 4 

 
when due), except (A) where (x) no Event of Default exists at the time thereof, and (y) Excess Availability is not less than $25,000,000 after giving effect thereto, or (B) so
long as no Event of Default has occurred and is continuing or would result therefrom, on or within 1 year after the date of consummation of any Qualifying IPO, Borrower may redeem or repurchase Senior Notes with the net cash proceeds of such
Qualifying IPO; provided that no more than 35% of the aggregate original principal amount of Senior Notes may be redeemed or repurchased in connection with all of such redemptions or repurchases; or 

(j)    Section 7.02(o) of the Credit Agreement is hereby amended by adding the following text before the
period (“.”) at the end thereof: 
 , it being agreed that the early termination of the Management Services Agreement is not
prohibited under the terms of this Agreement 
 (k)    Section 7.02(p)(iii) of the Credit Agreement is
hereby amended by (i) deleting the “and” at the end of clause (D) thereof; and (ii) adding the following new clause (F) immediately after subclause (E) thereof before the semicolon (“;”): 

and (F) engaging in activities typical for a holding company subject to Section 13 or 15(d) of the Exchange Act and other
activities incidental thereto 
 (l)    Section 7.02(p)(iv) of the Credit Agreement is hereby amended by
adding “except to the extent expressly permitted pursuant to Section 7.02(c)(iii)” before the comma at the end thereof. 

(m)    Exhibit D to the Credit Agreement is hereby amended by (i) deleting such Exhibit in its
entirety, and (ii) inserting the Exhibit D hereto in lieu thereof. 
 (n)    Exhibit F to the Credit
Agreement is hereby amended by (i) deleting such Exhibit in its entirety, and (ii) inserting the Exhibit F hereto in lieu thereof. 

(o)    Schedule 1.01(A) to the Credit Agreement is hereby amended by (i) deleting such Schedule in its
entirety, and (ii) inserting the Schedule 1.01(A) attached hereto in lieu thereof. 

3.    Conditions Precedent to Amendment. The satisfaction (or waiver in writing by Agents) of each of the following
shall constitute conditions precedent to the effectiveness of the Amendment (such date being the “Amendment Effective Date”): 

(a)    Agents shall have received this Amendment, duly executed by the parties hereto, and the same shall be in full force
and effect. 
 (b)    The Administrative Agent (or its counsel) shall have received an executed legal opinion, in
customary form, of Weil, Gotshal & Manges LLP. 
 (c)    The Administrative Agent (or its counsel) shall have
received a certificate of each Loan Party, dated as of the Amendment Effective Date, in form and substance reasonably satisfactory to Administrative Agent, executed by the President or any Vice President and the Secretary or any Assistant Secretary
of such Loan Party, attaching the documents referred to in Section 3(d)(i), (ii) and (iv) below (or, with respect to clause (ii) of such Section 3(d), certifying that there have been no
modifications to the Governing Documents of such Loan Party since the Effective Date), and in the case of the Borrower certifying as to the matters in Sections 3(f), 3(g) and 3(h) below. 

  
 5 

 (d)    The Administrative Agent shall have received (i) a copy of the
resolutions of the board of directors or other managers of each Loan Party (or a duly authorized committee thereof) authorizing (A) the execution, delivery, and performance of this Amendment and (B) the extensions of credit contemplated
under the Credit Agreement as amended hereby, (ii) the Governing Documents, (iii) long-form good standing certificates, certificates of status, certificates of good standing, or other comparable certificates of each Loan Party, and
(iv) signature and incumbency certificates (or other comparable documents evidencing the same) of the Authorized Officers of each Loan Party executing this Amendment. 

(e)    After giving effect to this Amendment, the representations and warranties contained herein shall be true and
correct in all material respects (except that such materiality qualifier shall not be applicable to any representations and warranties that already are qualified or modified as to “materiality” or “Material Adverse Effect” in the
text thereof, which representations and warranties shall be true and correct in all respects subject to such qualification) on and as of the date hereof, as though made on and as of such date (except to the extent that any such representation or
warranty expressly relates solely to an earlier date, in which case such representation or warranty shall be true and correct in all material respects (except that such materiality qualifier shall not be applicable to any representations or
warranties that already are qualified or modified as to “materiality” or “Material Adverse Effect” in the text thereof, which representations and warranties shall be true and correct in all respects subject to such qualification)
on and as of such earlier date). 
 (f)    No injunction, writ, restraining order, or other order of any nature
prohibiting, directly or indirectly, the consummation of the transactions contemplated herein shall have been issued and remain in force by any Governmental Authority against any Loan Party, any Agent, any Lender, or any Secured Party. 

(g)    No Default or Event of Default shall have occurred and be continuing as of the Amendment Effective Date, nor shall
either result from the consummation of the transactions contemplated herein. 
 (h)    Borrower shall pay concurrently
with the closing of the transactions evidenced by this Amendment, all costs and expenses then payable pursuant to the Credit Agreement and Section 5 of this Amendment. 

(i)    Administrative Agent shall have received, in immediately available funds, the Amendment Fee referred to in
Section 6 hereof. 
 4.    Representations and Warranties. Each Loan Party hereby represents and
warrants to each Agent and each Lender as follows: 
 (a)    It (i) is a corporation, limited liability company or
limited partnership duly organized, validly existing and in good standing under the laws of the state or jurisdiction of its organization, (ii) is duly qualified to do business and is in good standing in each jurisdiction in which the character
of the properties owned or leased by it or in which the transaction of its business makes such qualification necessary, except, in the case of this clause (ii), where the failure to be so qualified and in good standing, either individually or in the
aggregate, could not reasonably be expected to have a Material Adverse Effect, and (iii) has all requisite power and authority to conduct its business as now conducted and as presently contemplated and, in the case of the Borrower, to make the
borrowings hereunder, to execute and deliver this Amendment and the other Loan Documents to which it is a party and to consummate the transactions contemplated hereby and thereby. 

  
 6 

 (b)    The execution, delivery, and performance by it of this Amendment and
the performance by it of each Loan Document to which it is or will be a party (i) have been duly authorized by all necessary action, (ii) do not and will not contravene (A) any of its Governing Documents, (B) any applicable Law,
or (C) any Contractual Obligation binding on or otherwise affecting it or any of its properties, (iii) do not and will not result in or require the creation of any Lien (other than pursuant to any Loan Document) upon or with respect
to any of its properties, and (iv) do not and will not result in any default, noncompliance, suspension, revocation, impairment, forfeiture or nonrenewal of any permit, license, authorization or approval applicable to its operations or any of
its properties, except in the case of clauses (ii)(B), (ii)(C) and (iv) to the extent such could not reasonably be expected, either individually or in the aggregate, to have a Material Adverse Effect. 

(c)    No authorization or approval or other action by, and no notice to or filing with, any Governmental Authority is
required in connection with the due execution, delivery and performance by any Loan Party of this Amendment or any other Loan Document to which it is or will be a party except for (i) consents, authorizations, notices and filings which have
been obtained or made and are in full force and effect, (ii) filings to perfect the Liens created by the Loan Documents, and (iii) consents, authorizations, filings, notices or other acts the failure to make or obtain could not reasonably
be expected, either individually or in the aggregate, to be adverse in any material respect to the rights or interests of the Agents, the Lenders or the L/C Issuer. 

(d)    This Amendment is, and each other Loan Document to which it is or will be a party, when executed and delivered by
each Person that is a party thereto, will be the legal, valid and binding obligation of such Person, enforceable against such Person in accordance with its terms, except as may be limited by applicable bankruptcy, insolvency, reorganization,
moratorium or other similar laws or principles of equity. 
 (e)    No injunction, writ, restraining order, or other
order of any nature prohibiting, directly or indirectly, the consummation of the transactions contemplated herein has been issued and remains in force by any Governmental Authority against any Loan Party, any Agent, any Lender, or any Secured Party.

 (f)    No Default or Event of Default has occurred and is continuing as of the date of the effectiveness of this
Amendment, and no condition exists which constitutes a Default or an Event of Default. 
 (g)    The representations and
warranties set forth in the Credit Agreement, as amended by this Amendment and after giving effect to this Amendment, and the other Loan Documents to which it is a party are true and correct in all material respects (except that such materiality
qualifier shall not be applicable to any representations and warranties that already are qualified or modified as to “materiality” or “Material Adverse Effect” in the text thereof, which representations and warranties shall be
true and correct in all respects subject to such qualification) on and as of the date hereof, as though made on and as of such date (except to the extent that any such representation or warranty expressly relates solely to an earlier date, in which
case such representation or warranty shall be true and correct in all material respects (except that such materiality qualifier shall not be applicable to any representations or warranties that already are qualified or modified as to
“materiality” or “Material Adverse Effect” in the text thereof, which representations and warranties shall be true and correct in all respects subject to such qualification) on and as of such earlier date). 

5.    Payment of Costs and Fees. Borrower shall pay to each Agent and each Lender all costs and expenses in
connection with the preparation, negotiation, execution and delivery of this Amendment and any documents and instruments relating hereto in accordance with Section 12.04 of the Credit Agreement. 

  
 7 

 6.    Amendment Fee. On or before the date hereof, Borrower shall pay
to Administrative Agent, for the ratable benefit of the Lenders party hereto, an amendment fee in the amount of $75,000 (“Amendment Fee”) in immediately available funds. Such Amendment Fee shall be fully earned and non-refundable on
the date hereof. 
 7.    Mortgage Amendment. Borrower covenants and agrees that on or before the date that is 5
Business Days after the date hereof (or such later date as the Administrative Agent may agree in its sole discretion), the Administrative Agent shall have received an amendment to the Mortgage, duly executed by Lantheus MI Real Estate, LLC
(“Real Estate”), and the same shall be in form and substance reasonably satisfactory to the Agents. Borrower further agrees that its or Real Estate’s failure to timely comply with the foregoing shall constitute an immediate
Event of Default. 
 8.    GOVERNING LAW; CONSENT TO JURISDICTION; SERVICE OF PROCESS AND VENUE; JUDICIAL
REFERENCE; WAIVER OF JURY TRIAL, ETC. THIS AMENDMENT SHALL BE SUBJECT TO THE PROVISIONS REGARDING GOVERNING LAW, CONSENT TO JURISDICTION, SERVICE OF PROCESS AND VENUE, JUDICIAL REFERENCE, AND WAIVER OF JURY TRIAL, ETC. SET FORTH IN SECTIONS
12.09, 12.10, AND 12.11 OF THE CREDIT AGREEMENT, AND SUCH PROVISIONS ARE INCORPORATED HEREIN BY THIS REFERENCE, MUTATIS MUTANDIS. 

9.    Amendments. This Amendment cannot be altered, amended, changed or modified in any respect except in
accordance with Section 12.02 of the Credit Agreement. 
 10.    Counterpart Execution. This
Amendment may be executed in any number of counterparts and by different parties on separate counterparts, each of which, when executed and delivered, shall be deemed to be an original, and all of which, when taken together, shall constitute but one
and the same Amendment. Delivery of an executed counterpart of this Amendment by telefacsimile or other electronic method of transmission shall be equally as effective as delivery of an original executed counterpart of this Amendment. Any party
delivering an executed counterpart of this Amendment by telefacsimile or other electronic method of transmission also shall deliver an original executed counterpart of this Amendment, but the failure to deliver an original executed counterpart shall
not affect the validity, enforceability, and binding effect of this Amendment. 
 11.    Effect on Loan
Documents. 
 (a)    The Credit Agreement, as amended hereby, and each of the other Loan Documents shall be and
remain in full force and effect in accordance with their respective terms and hereby are ratified and confirmed in all respects. The execution, delivery, and performance of this Amendment shall not operate, except as expressly set forth herein, as a
modification or waiver of any right, power, or remedy of any Agent, any Lender, or any Secured Party under the Credit Agreement or any other Loan Document. Except for the amendments to the Credit Agreement expressly set forth herein, the Credit
Agreement and the other Loan Documents shall remain unchanged and in full force and effect. The amendments set forth herein are limited to the specifics hereof (including facts or occurrences on which the same are based), shall not apply with
respect to any facts or occurrences other than those on which the same are based, shall neither excuse any future non-compliance with the Loan Documents nor operate as a waiver of any Default or Event of Default, shall not operate as a consent to
any further waiver, consent or amendment or other matter under the Loan Documents, and shall not be construed as an indication that any future waiver or amendment of covenants or any other provision of the Credit

  
 8 

 
Agreement will be agreed to, it being understood that the granting or denying of any waiver or amendment which may hereafter be requested by any Loan Party remains in the sole and absolute
discretion of Agent and Lenders. To the extent that any terms or provisions of this Amendment conflict with those of the Credit Agreement or the other Loan Documents, the terms and provisions of this Amendment shall control. 

(b)    Upon and after the effectiveness of this Amendment, each reference in the Credit Agreement to “this
Agreement”, “hereunder”, “herein”, “hereof” or words of like import referring to the Credit Agreement, and each reference in the other Loan Documents to “the Credit Agreement”, “thereunder”,
“therein”, “thereof” or words of like import referring to the Credit Agreement, shall mean and be a reference to the Credit Agreement as modified and amended hereby. 

(c)    To the extent that any of the terms and conditions in any of the Loan Documents shall contradict or be in conflict
with any of the terms or conditions of the Credit Agreement, after giving effect to this Amendment, such terms and conditions are hereby deemed modified or amended accordingly to reflect the terms and conditions of the Credit Agreement as modified
or amended hereby. 
 (d)    This Amendment is a Loan Document. 

(e)    This Amendment shall be subject to the rules of construction set forth in Section 1.02 of the Credit
Agreement, and such provisions are incorporated herein by this reference, mutatis mutandis. 
 12.    Entire
Agreement. This Amendment, and the terms and provisions hereof, the Credit Agreement and the other Loan Documents constitute the entire understanding and agreement between the parties hereto with respect to the subject matter hereof and
supersede any and all prior or contemporaneous amendments or understandings with respect to the subject matter hereof, whether express or implied, oral or written. 

13.    Integration. This Amendment, together with the other Loan Documents, incorporates all negotiations of the
parties hereto with respect to the subject matter hereof and is the final expression and agreement of the parties hereto with respect to the subject matter hereof. 

14.    Reaffirmation of Obligations. Each Loan Party hereby (a) acknowledges and reaffirms its obligations
owing to each Agent, each Lender, and each other Secured Party under each Loan Document to which it is a party, and (b) agrees that each of the Loan Documents to which it is a party is and shall remain in full force and effect. Each Loan Party
hereby (i) further ratifies and reaffirms the validity and enforceability of all of the Liens and security interests heretofore granted, pursuant to and in connection with the Security Agreement or any other Loan Document to Collateral Agent,
on behalf and for the benefit of each Secured Party, as collateral security for its obligations under the Loan Documents in accordance with their respective terms, and (ii) acknowledges that all of such Liens and security interests, and all
Collateral heretofore pledged as security for such obligations, continue to be and remain collateral for such obligations from and after the date hereof (including, without limitation, from after giving effect to this Amendment). Each Guarantor
hereby reaffirms, acknowledges, agrees and confirms that it has granted a perfected security interest in the Collateral pursuant to and in connection with the Security Agreement to Collateral Agent in order to secure all of its present and future
Guaranteed Obligations. 
 15.    Ratification. Each Loan Party hereby restates, ratifies and reaffirms each and
every term and condition set forth in the Credit Agreement and the Loan Documents effective as of the date hereof and as modified hereby. All Obligations (including the Guaranteed Obligations, as applicable) owing by each Loan Party are
unconditionally owing by such Loan Party to Agents and the Lenders, without offset, defense, withholding, counterclaim, or deduction of any kind, nature, or description whatsoever. 

  
 9 

 16.    Severability. In case any provision in this Amendment shall be
invalid, illegal or unenforceable, such provision shall be severable from the remainder of this Amendment and the validity, legality and enforceability of the remaining provisions shall not in any way be affected or impaired thereby. 

17.    Guarantors. Although the undersigned Guarantors have been informed of the matters set forth herein and have
acknowledged and agreed to same, the undersigned understands that neither Agent nor any Lender has any obligations to inform it of amendments or waivers in the future or to seek their acknowledgment or agreement to future amendments and waivers, and
nothing herein shall create such a duty. 
 [Signature pages follow] 

  
 10 

 IN WITNESS WHEREOF, the parties have entered into this Amendment as of the date first above
written. 
  

			
	BORROWER:
	
	LANTHEUS MEDICAL IMAGING, INC., a Delaware corporation
		
	By:	 	/s/ Michael Duffy
	Name: Michael Duffy
	Title: Vice President and Secretary

  

			
	PARENT and GUARANTOR:
	
	LANTHEUS MI INTERMEDIATE, INC., a Delaware corporation
		
	By:	 	/s/ Michael Duffy
	Name: Michael Duffy
	Title: Vice President and Secretary

  

			
	GUARANTOR:
	
	LANTHEUS MI REAL ESTATE, LLC, a Delaware limited liability company
		
	By:	 	/s/ Michael Duffy
	Name: Michael Duffy
	Title: Vice President and Secretary

			
	COLLATERAL AGENT, ADMINISTRATIVE AGENT, and LENDER:
	
	WELLS FARGO BANK, NATIONAL ASSOCIATION, a national banking association
		
	By:	 	/s/ Steve Scott

			
	Name:	 	Steve Scott
		 	Its Authorized Signatory

 EXHIBIT D 

FORM OF NOTICE OF BORROWING 

[LETTERHEAD OF THE BORROWER] 

[Date] 
 Wells Fargo Bank, National Association

 as the Administrative Agent for the Lenders 
 party to the
Credit Agreement referred to below 
     2450 Colorado Avenue, Suite 3000 West 

    Santa Monica, California 90404 
 Ladies
and Gentlemen: 
 The undersigned, LANTHEUS MEDICAL IMAGING, INC., a Delaware corporation (the “Borrower”),
(i) refers to that certain Amended and Restated Credit Agreement, dated as of July 3, 2013 (as amended, restated, supplemented, or otherwise modified from time to time, the “Credit Agreement”), by and among LANTHEUS MI
INTERMEDIATE, INC., a Delaware corporation (the “Parent”), the Borrower, the “Guarantors” from time to time party thereto, the lenders from time to time party thereto (each a “Lender” and individually
and collectively, the “Lenders”), WELLS FARGO BANK, NATIONAL ASSOCIATION, a national banking association (“Wells Fargo”), as the collateral agent for the benefit of Agents and the other Secured Parties (in
such capacity, together with its successors and assigns in such capacity, if any, the “Collateral Agent”) and as the administrative agent for the Lenders (in such capacity, together with its successors and assigns in such capacity,
if any, the “Administrative Agent” and together with the Collateral Agent, each an “Agent” and individually and collectively, the “Agents”), and Wells Fargo, as sole lead arranger, bookrunner, and
syndication agent, and (ii) hereby gives you notice pursuant to Section 2.02 of the Credit Agreement that the undersigned hereby requests a Revolving Loan under the Credit Agreement, and in that connection sets forth below the
information relating to such Revolving Loan (the “Proposed Revolving Loan”) as required by Section 2.02(a) of the Credit Agreement. All initially capitalized terms used herein without definition shall have the meanings
ascribed thereto in the Credit Agreement. 
  

	 	(i)	The aggregate principal amount of the Proposed Revolving Loan is $            .1 

 

	 	(ii)	The borrowing date of the Proposed Revolving Loan is                  , 20    .2 

  

	 	(iii)	The Proposed Revolving Loan is a [Reference Rate Loan] [LIBOR Rate Loan]. 

(iv)      If the Proposed Revolving Loan is a LIBOR Rate Loan, such Proposed Revolving Loan shall have an
Interest Period of [one][two][three][six] month(s). 
  

	1 	Each Revolving Loan shall be made in a minimum amount of $1,000,000 and shall be in an integral multiple of $500,000. 

	2 	This date must be a Business Day. 

  
 -2- 

 (v)      The proceeds of the Proposed Revolving Loan should be made
available to the undersigned by wire transferring such proceeds in accordance with the payment instructions attached hereto as Exhibit A. 

[The undersigned certifies that that the making of the Proposed Revolving Loan does not result in Borrower or any Guarantor being breach of,
or out of compliance with, Section 10.10 or Section 10.11 of the Senior Note Indenture. The undersigned further certifies that, after giving effect to the Proposed Revolving Loan, the aggregate outstanding amount of the Revolving Loans and
the outstanding Letter of Credit Obligations [does][does not] exceed $42,500,000. [If, after giving effect to the Proposed Revolving Loan, the aggregate outstanding amount of the Revolving Loans and the outstanding Letter of Credit
Obligations exceeds $42,500,000, (a) such excess amount of Indebtedness is permitted under a provision of Section 10.10 of the Senior Note Indenture other than Section 10.10(1) of the Senior Note Indenture, (b) the Lien securing
such excess amount of Indebtedness constitutes a “Permitted Lien” under, and as defined in, the Senior Note Indenture other than a “Permitted Lien” under clause (19) of the definition of “Permitted Liens” set forth
in the Senior Note Indenture, and (c) after giving effect to the incurrence of such excess amount of Indebtedness, Borrower would be able to incur an additional $3,000,000 of secured Indebtedness under the Loan Documents under a provision of
Section 10.10 of the Senior Note Indenture other than Section 10.10(1) and under a clause of the definition of “Permitted Liens” set forth in the Senior Note Indenture other than clause (19) of the definition of
“Permitted Liens” set forth in the Senior Note Indenture.]3]4 

The undersigned certifies that (a) the representations and warranties contained in ARTICLE VI of the Credit Agreement and in each
other Loan Document, certificate, financial statement, report or statement of fact delivered to any Agent or any Lender pursuant thereto on or prior to the date of the Proposed Revolving Loan are true and correct in all material respects (except
that such materiality qualifier shall not be applicable to any representations or warranties that already are qualified or modified as to “materiality” or “Material Adverse Effect” in the text thereof, which representations and
warranties shall be true and correct in all respects subject to such qualification) on and as of such date as though made on and as of such date except to the extent that any such representation or warranty expressly relates solely to an
earlier date (in which case such representation or warranty shall be true and correct in all material respects (except that such materiality qualifier shall not be applicable to any representations or warranties that already are qualified or
modified as to “materiality” or “Material Adverse Effect” in the text thereof, which representations and warranties shall be true and correct in all respects subject to such qualification) on and as of such earlier date),
(b) no Default or Event of Default has occurred and is continuing or would result from the making of the Proposed Revolving Loan, (c) after giving effect to the making of the Proposed Revolving Loan, the Total Revolving Exposure does not
exceed the Line Cap, and (d) the making of the Proposed Revolving Loan shall not contravene any law, rule or regulation applicable to any Agent, any Lender or the L/C Issuer. 

 

	3 	Include bracketed language if “does” is chosen in the sentence immediately prior to the bracketed language. 

	4 	Include bracketed language only if any Senior Notes are outstanding. 

  
 -3- 

 
			
	Very truly yours,
	
	LANTHEUS MEDICAL IMAGING, INC., a Delaware corporation, as the Borrower
		
	By:	 	 

 
			
	Name:	 	 

 
			
	Title:	 	 

  
 -4- 

 EXHIBIT A 

Payment Instructions 

 EXHIBIT F 

FORM OF BORROWING BASE CERTIFICATE 

[See attached] 

 Schedule 1.01(A)
            Lenders and Lenders’ Revolving Credit Commitments 
  

					
	 Lender
	 	 Revolving Credit Commitment
	 	 Total Commitment

	 Wells Fargo Bank, National Association
	 	$50,000,000	 	$50,000,000
			
	 All Lenders
	 	$50,000,000	 	$50,000,000

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