Document:

Indenture

 Exhibit 4.8 
 AMERICAN TOWER CORPORATION 
 ISSUER 

THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A. 
 TRUSTEE 
  

 
 FIRST
SUPPLEMENTAL INDENTURE 
 Dated as of December 2, 2008 

to 

Indenture Dated as of October 1, 2007 

 
  

 FIRST SUPPLEMENTAL INDENTURE dated as of December 2, 2008 (this “First
Supplemental Indenture”) to the Indenture dated as of October 1, 2007 (the “Original Indenture” and, as supplemented by this First Supplemental Indenture, the “Indenture”) between American Tower
Corporation, a Delaware corporation (together with any and all successors, the “Company”), and The Bank of New York Mellon Trust Company, N.A. (formerly known as The Bank of New York Trust Company, N.A.), a banking association, as
trustee (together with any and all successors, the “Trustee”). 
 Capitalized terms used herein and not
otherwise defined shall have the respective meanings assigned thereto in the Original Indenture. All definitions in the Original Indenture shall be read in a manner consistent with the terms of this First Supplemental Indenture for the purpose of
this First Supplemental Indenture. 
 WHEREAS, the Company and the Trustee heretofore executed and delivered the Original
Indenture; 
 WHEREAS, the Company, pursuant to the Original Indenture, issued its 7.000% Senior Notes due 2017 (the
“Notes”); 
 WHEREAS, there are currently $500.0 million aggregate principal amount of Notes outstanding, for
which the Global Notes bear Restricted Notes Legends and restricted CUSIP and ISIN numbers; 
 WHEREAS, Article 9 of the
Original Indenture provides, among other things, that the Company and the Trustee may from time to time and at any time, without the consent of the Holders, enter into an indenture or indentures supplemental to the Original Indenture to, among other
things, alter the provisions of Article 2 of the Original Indenture (including the related definitions) in a manner that does not materially adversely affect any Holder; 
 WHEREAS, in light of the amendments to Rule 144 under the Securities Act of 1933, as amended (“Rule 144”), the Company desires to amend the Original Indenture to permit it to issue Global
Notes that do not bear Restricted Notes Legends and bear unrestricted CUSIP and ISIN numbers in exchange for and in lieu of the existing Global Notes following the holding period contemplated by Rule 144; 

WHEREAS, the amendments contained herein do not materially adversely affect any Holder; 

WHEREAS, the Company desires and has requested the Trustee to join with it in entering into this First Supplemental Indenture; and

 WHEREAS, the execution of this First Supplemental Indenture has been duly authorized by a Board Resolution and, in accordance
with such Board Resolution, an Officers’ Certificate. 

  
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 NOW, THEREFORE, in consideration of the above premises, the Company and the Trustee agree as
follows for the benefit of each other and for the equal and ratable benefit of the Holders of the Notes: 
 ARTICLE 1

 LEGENDS 
 Section 1.01 Transfer and Exchange of Global Notes. 

Section 2.06(a) of the Original Indenture is hereby amended by adding the following words at the end of the last sentence of the
first paragraph thereof: 
 “and a Global Note may be exchanged for another Global Note as provided in Section 2.06(f)
hereof”. 
 Section 1.02. Securities Act Legends. 

Section 2.06(f)(iv)(4) of the Original Indenture is hereby amended by deleting the phrase “(other than a Global Note)”
therefrom. 
 Section 2.06(f)(iv)(6) of the Original Indenture is hereby amended by deleting the phrase “(other than a
Global Note)” therefrom. 
 ARTICLE 2 
 MISCELLANEOUS 
 Section 2.01. Governing Law. 

THE INTERNAL LAW OF THE STATE OF NEW YORK SHALL GOVERN AND BE USED TO CONSTRUE THIS FIRST SUPPLEMENTAL INDENTURE AND THE ADDITIONAL
NOTES 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. 
 Section 2.02. Trust Indenture Act Controls. 
 If any provision of this
First Supplemental Indenture limits, qualifies or conflicts with the duties imposed by TIA § 318(c), the imposed duties shall control. 
 Section 2.03. Severability. 
 In case any provision in this First
Supplemental Indenture 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. 

Section 2.04. Counterpart Originals. 
 The parties may sign any number of copies of this First Supplemental Indenture. Each signed copy shall be an original, but all of them together represent the same agreement. 

  
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 Section 2.05. Table of Contents, Headings, etc. 

The headings of the Articles and Sections of this First Supplemental Indenture have been inserted for convenience of reference only, are
not to be considered a part of this Indenture and shall in no way modify or restrict any of the terms or provisions hereof. 

Section 2.06. Trustee Makes No Representations. 
 The Trustee makes no representations as to the validity or sufficiency of this First Supplemental Indenture. The recitals and statements herein are deemed to be those of the Company and not of the
Trustee. 
 [Remainder of the page intentionally left blank] 

  
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 SIGNATURES 
 Dated as of December 2, 2008 
  

					
	AMERICAN TOWER CORPORATION
		
	By:	 	 /s/ Edmund DiSanto

		 	Name:	 	Edmund DiSanto
		 	Title:	 	Executive Vice President, Chief Administrative Officer, General Counsel and Secretary
	
	THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A., as Trustee
		
	By:	 	 /s/ Vaneta Bernard

		 	Name:	 	Vaneta Bernard
		 	Title:	 	Vice President

 -Signature Page to First Supplemental Indenture-Form of Restricted Stock Unit Agreement (U.S.)

 Exhibit 10.12 

 

			
	 American Tower Corporation
 Notice of Grant of Restricted Stock Units and RSU
 Agreement (U.S. Employee /
Time)
	  	 American Tower Corporation
 ID: 65-0723837
 116 Huntington Ave
 Boston, MA 02116

		
	 Administrator
 116
Huntington Avenue 11th Floor

Boston MA United States 02116
	  	 Participant Name:
 RSU
Number:
 Plan: 

ID:

 American Tower Corporation, a Delaware corporation (the “Company”), hereby grants to the Participant named
above (“you”) restricted stock units (the “RSUs”) representing the right to receive the number of shares of Common Stock, par value $0.01 per share (the “Stock”) of the Company set forth below (or, if so determined by
the Committee, the value of such shares, payable in cash or such other property as the Committee determines) on the terms of this Notice of Grant of Restricted Stock Units and RSU Agreement (this “Agreement”), subject to your acceptance of
this Agreement and the provisions of the American Tower Corporation 2007 Equity Incentive Plan, as amended from time to time (the “Plan”). 
  

					
	Date of grant:	 	                    ,
20        	  	
			
	Number of shares:	 		  	

 The RSUs will vest and the underlying shares will become issuable on the following schedule (each date, a “scheduled
vesting date”): 
 on
                    , 20    , as to
                     shares, 
 on                     , 20    , as to
                     additional shares, 
 on                     , 20    , as to
                     additional shares, and 
 on                     , 20    , as to
                     additional shares. 

By your signature below, you agree with the Company to the terms of this Agreement. 

 

							
	  
	 		  	  
	  	
	Participant	 		  	Date	  	

 Terms of Restricted Stock Units 

1. Plan Incorporated by Reference. The provisions of the Plan are incorporated into and made a part of this Agreement by this
reference. Capitalized terms used and not otherwise defined in this Agreement have the meanings given to them in the Plan. The Committee administers the Plan, and its determinations regarding the interpretation and operation of the Plan and this
Agreement are final and binding. The Board may in its sole discretion at any time terminate or from time to time modify and amend the Plan as provided therein. You may obtain a copy of the Plan without charge upon request to the Company’s Human
Resources Department. 
 2. Vesting of RSUs. The RSUs will vest, while you are employed by the Company or one of its
Affiliates, for the respective numbers of shares and on the scheduled vesting dates stated in the vesting schedule on the first page of this Agreement, subject to the other terms hereof. RSUs are an unfunded, unsecured obligation of the Company. You
shall not earn any rights under the RSUs except in conformity with such schedule and until all other conditions that are required to be met in order to issue the underlying shares have been satisfied. Subject to Section 6, within sixty
(60) days after the scheduled vesting date for any RSUs, the Company will deliver to you or your legal representative the number of shares of Stock underlying the number of vested RSUs associated with such scheduled vesting date on the vesting
schedule (or such cash or other property as the Committee determines). 
 3. Dividend Equivalents. While the RSUs, with a
grant date of January 1, 2012 or later, are outstanding and unvested, the Company will accrue dividend equivalents on your behalf. The dividend equivalent with respect to each RSU will be equal to the sum of the cash dividend declared and paid
by the Company with respect to each share of Stock while the RSU is outstanding (but not dividends declared and paid before January 1, 2012). No interest will accrue on the dividend equivalents. The dividend equivalents with respect to each RSU
shall be earned and distributed in cash at the same time as the RSU is earned and distributed. 
 4.
Termination of RSUs. Upon termination of your employment with the Company and its Affiliates for any reason, any of the RSUs that are unvested as of the termination date, together with any accrued dividend equivalents, will be canceled for no
value. Authorized leave of absence or absence on military or government service shall not constitute termination of your employment for this purpose so long as either (a) such absence is for a period of no more than 90 calendar days or
(b) your right to re-employment after such absence is guaranteed either by statute or by contract. 
 5.
Withholding Taxes. Upon the vesting of the RSUs, the Company shall withhold from issuance in settlement of such RSUs the number of shares of Stock necessary to satisfy the minimum tax withholding obligations arising from such vesting with
such shares of Stock valued at their Fair Market Value on such date; provided, that the Company may permit, at the discretion of the President and Chief Executive Officer, the Treasurer and Chief Financial Officer, or the Executive Vice President,
Chief Administrative Officer and General Counsel, you to pay the associated tax withholding obligations to the Company in cash (in lieu of the Company withholding shares of Stock), if you submit a written request therefor in advance of the vesting
date for such RSUs and remits to the Company such payment no later than the date of delivery of the remaining shares to the holder in settlement of the RSUs. The cash payment of the accrued dividend equivalents is treated as taxable income and added
to the value of the vested RSU shares. Notwithstanding the foregoing, tax withholding with respect to the issued shares of Stock and cash payment of dividend equivalents shall be first applied against the cash payment of dividend equivalents and,
accordingly, may reduce the total number of shares required to be withheld in order to satisfy the minimum withholding tax obligation. 
 6. Termination; Forfeiture. Notwithstanding any other provision of this Agreement, you shall be obligated to (a) transfer to the Company any shares, cash or other property previously issued
upon vesting of RSUs and dividend equivalents and (b) pay to the Company all gains realized by any person from the disposition of any such shares or other property if: (I) your employment with the Company or any Affiliate is terminated for
cause or (II) following termination of employment for any reason, either (A) the Company determines that you engaged in conduct while an employee that would have justified termination for cause or (B) you violate any applicable
confidentiality or non-competition agreement with the Company or any Affiliate. Termination for cause means criminal conduct involving a felony in the U.S. or the equivalent of a felony under the laws of other countries, material violations of civil
law related to your job responsibilities, fraud, dishonesty, self-dealing, breach of your obligations regarding the Company’s intellectual property, or willful misconduct that the Committee determines to be injurious to the Company. 

  
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 7. Compliance with Law; Lock-Up Agreement. The Company shall not be obligated to
issue any shares of Stock or other securities upon vesting of the RSUs unless the Company is satisfied that all requirements of law or any applicable stock exchange in connection therewith (including without limitation the effective registration or
exemption of the issuance of such shares or other securities under the Securities Act of 1933, as amended, and applicable state securities laws) have been or will be complied with, and the Committee may impose any restrictions on your rights as it
shall deem necessary or advisable to comply with any such requirements; provided that the Company will issue such shares or other securities on the earliest date at which it reasonably anticipates that such issuance will not cause such violation .
You further agree hereby that, as a condition to the issuance of shares upon vesting of the RSUs, you will enter into and perform any underwriter’s lock-up agreement requested by the Company from time to time in connection with public offerings
of the Company’s securities. 
 8. Rights as Stockholder. You shall have no rights as a stockholder with respect to
any shares of Stock or other securities covered by the RSUs until the issuance of such actual shares of Stock or other securities. 
 9. Effect on Your Employment. Neither the adoption, maintenance or operation of the Plan nor the award of the RSUs and the dividend equivalents with respect to the RSUs confers upon you any right
to continue your employment with the Company or any Affiliate, nor shall they interfere with the rights of the Company or any Affiliate to terminate or otherwise change the terms of such employment or service at any time, including, without
limitation, the right to promote, demote or reassign you from one position to another in the Company or any Affiliate. Unless the Committee otherwise provides in any case, your employment with an Affiliate shall be deemed to terminate for purposes
of the Plan when such Affiliate ceases to be an Affiliate of the Company. 
 10. Nontransferability. You may not assign
or transfer the RSUs or any rights with respect thereto, including without limitation, the dividend equivalents with respect to the RSUs, except by will or by the laws of descent and distribution or to the extent expressly permitted in writing by
the Committee. 
 11. Corporate Events. The terms of the RSUs and the dividend equivalents with respect to the RSUs may
be changed without your consent as provided in the Plan upon a change in control of, or certain other corporate events affecting, the Company. Without limiting the foregoing, the number and kind of shares or other securities or property issuable
upon vesting of the RSUs may be changed, the vesting schedule may be accelerated, the RSUs may be assumed by another issuer, or the RSUs may be terminated, as the Committee may consider equitable to the participants in the Plan and in the best
interests of the Company. 
 12. Governing Law. This Agreement shall be governed by and construed and enforced in
accordance with the applicable laws of the United States of America and the law (other than the law governing conflict of law questions) of the Commonwealth of Massachusetts except to the extent the laws of any other jurisdiction are mandatorily
applicable. 
 13. Amendment and Termination of the RSUs. The RSUs and the dividend equivalents with respect to the RSUs
may be amended or terminated by the Company with or without your consent, as permitted by the Plan.

  
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