Document:

exv4w4

Exhibit 4.4

THIRD SUPPLEMENTAL INDENTURE

     Third Supplemental Indenture (this “Supplemental Indenture”), dated as of November 5, 2010,
among American Fiber Systems Holding Corporation., a Delaware corporation (“Holding”), American
Fiber Systems, Inc., a Delaware corporation (“AFS” and together with Holding, the “Guaranteeing
Subsidiaries”), each a subsidiary of Zayo Group, LLC, a Delaware limited liability company (the
“Company”), and/or Zayo Capital, Inc., a Delaware corporation (the “Co-Issuer” and, together with
the Company, the “Issuers”), and The Bank of New York Mellon Trust Company, N.A., a national
banking association organized and existing under the bank of the United States of America, as
trustee (the “Trustee”).

W I T N E S S E T H

     WHEREAS, each of the Company, the Co-Issuer, and the Guarantors (as defined in the Indenture
referred to below) have heretofore executed and delivered to the Trustee an indenture, dated as of
March 12, 2010 (the “Base Indenture”), among the Issuers, the Guarantors party thereto and the
Trustee, as supplemented by the First Supplemental Indenture, dated as of September 13, 2010 (the
“First Supplemental Indenture”), between Zayo Fiber Solutions, LLC, and the Trustee, and the Second
Supplemental Indenture, dated as of September 20, 2010 (the “Second Supplemental Indenture”), among
the Issuers, the Guarantors party thereto and the Trustee (such Base Indenture, as supplemented by
the First Supplemental Indenture and the Second Supplemental Indenture, the “Indenture”).

     WHEREAS, the Indenture provides for the issuance of an unlimited aggregate principal amount of
10.25% Senior Secured First-Priority Notes due 2017 (the “Notes”);

     WHEREAS, the Indenture provides that under certain circumstances each Guaranteeing Subsidiary
shall execute and deliver to the Trustee a supplemental indenture pursuant to which each such
Guaranteeing Subsidiary shall unconditionally guarantee all of the Issuers’ Obligations under the
Notes and the Indenture on the terms and conditions set forth herein and under the Indenture; and

     WHEREAS, pursuant to Section 9.01 of the Indenture, the Trustee is authorized to execute and
deliver this Supplemental Indenture;

     NOW THEREFORE, in consideration of the foregoing and for other good and valuable
consideration, the receipt of which is hereby acknowledged, the parties mutually covenant and agree
for the equal and ratable benefit of the Holders of the Notes as follows:

     (1) Capitalized Terms. Capitalized terms used herein without definition shall have
the meanings assigned to them in the Indenture.

     (2) Agreement to be Bound. Each Guaranteeing Subsidiary hereby becomes a party to the
Indenture as a Guarantor and as such will have all of the rights and be subject to all of the
obligations and agreements of a Guarantor under the Indenture.

 

 

     (3) Guarantee. Each Guaranteeing Subsidiary agrees, on a joint and several basis with
all the existing Guarantors, to Guarantee to each Holder of the Notes and the Trustee the Indenture
Obligations pursuant to Article 13 of the Indenture.

     (4) No Recourse Against Others. No director, officer, employee, incorporator, or
stockholder of either Guaranteeing Subsidiary shall have any liability for any obligations of the
Issuers or the Guarantors (including such Guaranteeing Subsidiary) under the Notes, any Note
Guarantees, the Indenture, or this Supplemental Indenture, or for any claim based on, in respect
of, or by reason of, such obligations or their creation. Each Holder, by accepting Notes, waives
and releases all such liability. The waiver and release are part of the consideration for issuance
of the Notes and the Note Guarantees.

     (5) Governing Law. THIS SUPPLEMENTAL INDENTURE WILL BE GOVERNED BY AND CONSTRUED IN
ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK.

     (6) Counterparts. The parties may sign any number of copies of this Supplemental
Indenture. Each signed copy shall be an original, but all of them together represent the same
agreement.

     (7) Effect of Headings. The Section headings herein are for convenience only and
shall not affect the construction hereof.

     (8) The Trustee. The Trustee shall not be responsible in any manner whatsoever for or
in respect of the validity or sufficiency of this Supplemental Indenture or for or in respect of
the recitals contained herein, all of which recitals are made solely by each Guaranteeing
Subsidiary.

     (9) Benefits Acknowledged. Each Guaranteeing Subsidiary’s Guarantee is subject to the
terms and conditions set forth in the Indenture. Each Guaranteeing Subsidiary acknowledges that it
will receive direct and indirect benefits from the financing arrangements contemplated by the
Indenture and this Supplemental Indenture and that the guarantee and waivers made by it pursuant to
this Note Guarantee are knowingly made in contemplation of such benefits.

     (10) Successors. All agreements of each Guaranteeing Subsidiary in this Supplemental
Indenture shall bind its successors, except as otherwise provided in the Indenture. All agreements
of the Trustee in this Supplemental Indenture shall bind its successors.

2

 

     IN WITNESS WHEREOF, the parties hereto have caused this Supplemental Indenture to be duly
executed, all as of the date first above written.

	 	 	 	 	 
	 	AMERICAN FIBER SYSTEMS HOLDING CORP.

 	 
	 	By:  	/s/  Kenneth des Garennes
 	 
	 	 	Name:  	Kenneth desGarennes 	 
	 	 	Title:  	Vice President and Chief Financial Officer 	 
	 
	 	AMERICAN FIBER SYSTEMS, INC.

 	 
	 	By:  	/s/ Kenneth des Garennes
 	 
	 	 	Name:  	Kenneth desGarennes 	 
	 	 	Title:  	Vice President and Chief Financial Officer 	 
	 
	 	THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A., as Trustee

 	 
	 	By:  	/s/ Melonee Young
 	 
	 	 	Name:  	Melonee Young 	 
	 	 	Title:  	Vice Presidentexv10w3

Exhibit 10.3

EXECUTION VERSION

GUARANTY SUPPLEMENT

     Reference is made to that certain Credit Agreement, dated as of March 12, 2010, by and among
Zayo Group, LLC, a Delaware limited liability company (the “Administrative Borrower”), Zayo
Capital, Inc., a Delaware corporation (“Zayo Capital”; and together with the Administrative
Borrower, each, individually a “Borrower” and, collectively, the “Borrowers”), the Persons party
thereto from time to time as Guarantors, SunTrust Bank, as the Issuing Bank, SunTrust Bank, as the
Collateral Agent, the financial institutions party thereto from time to time as lenders (the
“Lenders”), and SunTrust Bank, as the administrative agent (the “Administrative Agent”), as amended
by that certain First Amendment to Credit Agreement, dated as of September 13, 2010, among the
Administrative Borrower, Zayo Capital, the Guarantors party thereto, SunTrust Bank and the other
financial institutions named therein, and as supplemented by the Guaranty Supplement, dated as of
August 16, 2010, by Zayo Fiber Solutions, LLC, in favor of the Administrative Agent (as further
amended, restated, supplemented or otherwise modified from time to time, the “Credit Agreement”;
capitalized terms used herein without definition shall have the meanings ascribed thereto in the
Credit Agreement).

     Whereas, pursuant to Section 6.18 of the Credit Agreement, a new Domestic Subsidiary (whether
by acquisition, creation or designation) of the Borrowers is required to join the Credit Agreement
as a Guarantor and become a Borrower Party by executing and delivering in favor of the
Administrative Agent this Guaranty Supplement. Upon the execution and delivery of this Guaranty
Supplement by such Domestic Subsidiary, such Domestic Subsidiary shall become a Guarantor of the
Obligations and become a Borrower Party under the Credit Agreement with the same force and effect
as if originally named as a Guarantor therein.

     The undersigned (the “New Guarantor”) hereby agrees as follows:

     1. In accordance with Section 6.18 of the Credit Agreement, the New Guarantor, by its
signature below, becomes a “Guarantor” and a “Borrower Party” under the Credit Agreement with the
same force and effect as if originally named therein as a “Guarantor” and as a “Borrower Party”,
and the New Guarantor hereby agrees to all of the terms and provisions of the Credit Agreement
applicable to it as a “Guarantor” and as a “Borrower Party” thereunder. In furtherance of the
foregoing, the New Guarantor, as security for the payment and performance in full of the
Obligations, does hereby guarantee, subject to the limitations set forth in Section 3.1(g) of the
Credit Agreement, to the Administrative Agent, for the benefit of the Lender Group, the full and
prompt payment of the Obligations, including, without limitation, any interest thereon (including,
without limitation, interest, as provided in the Credit Agreement, accruing after the filing of a
petition initiating any Insolvency Proceedings, whether or not such interest accrues or is
recoverable against the Borrowers after the filing of such petition for purposes of the Bankruptcy
Code or is an allowed claim in such proceeding), plus reasonable attorneys’ fees and expenses if
the obligations represented by the Credit Agreement are collected by law, through an
attorney-at-law, or under advice therefrom. Each reference to a

 

 

“Guarantor” and “Borrower Party”
in the Credit Agreement shall be deemed to include the New Guarantor. The Credit Agreement is
incorporated herein by reference.

     2. The New Guarantor represents and warrants to the Administrative Agent and the other members
of the Lender Group that this Guaranty Supplement has been duly executed and delivered by the New
Guarantor and constitutes its legal, valid and binding obligation, enforceable against it in
accordance with its terms, except to the extent that the enforceability thereof may be limited by
applicable bankruptcy, insolvency, reorganization, or similar laws affecting the enforcement of
creditors’ rights generally or by general principles of equity (regardless of whether such
enforcement is considered in a proceeding in equity or at law).

     3. This Guaranty Supplement may be executed in any number of counterparts, each of which shall
be deemed to be an original, but all such separate counterparts shall together constitute but one
and the same agreement. In proving this Guaranty Supplement in any judicial proceedings, it shall
not be necessary to produce or account for more than one such counterpart signed by the party
against whom such enforcement is sought. Any signatures delivered by a party by facsimile
transmission or other electronic transmission shall be deemed an original signature hereto.

     4. Except as expressly supplemented hereby, the Credit Agreement shall remain in full force
and effect.

     5. THIS GUARANTY SUPPLEMENT SHALL BE CONSTRUED IN ACCORDANCE WITH AND GOVERNED BY THE LAWS OF
THE STATE OF NEW YORK.

     6. This Guaranty Supplement shall be considered a Loan Document for all purposes.

[remainder of this page intentionally left blank]

 

 

     IN WITNESS WHEREOF, the New Guarantor has duly executed this Guaranty Supplement as of
November 5, 2010.

	 	 	 	 	 	 	 

	NEW GUARANTOR:	 	AMERICAN FIBER SYSTEMS INC.
	 
	 	 	 	 	 	 
	 

	 	By:	 	/s/ Scott E. Beer	 	 
	 

	 	Name:
	 	 

Scott E. Beer
	 	 
	 

	 	Title:
	 	Secretary	 	 

[Signature Page to American Fiber Systems Inc. Guaranty Supplement]

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