13. Amendments, Supplements and Waivers. The Indenture or the Securities may
be amended or supplemented as provided in the Indenture.
14. Defaults and Remedies. The Events of Default
relating to the Securities are defined in Section 5.01 of the Base Indenture. If any Event of Default occurs and is continuing, the Trustee or the Holders of at least 25% in principal amount of the then outstanding Securities may declare the
principal, premium, if any, interest and any other monetary obligations on all the then outstanding Securities to be due and payable immediately. Notwithstanding the foregoing, in the case of an Event of Default arising from certain events of
bankruptcy or insolvency, all outstanding Securities shall 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 (except a Default
relating to the payment of principal, premium, if any, or interest) if it determines that withholding notice is in their interest. The Holders of a majority in aggregate principal amount of the Securities then outstanding by notice to the Trustee
may on behalf of the Holders of all of the Securities waive any existing Default and its consequences under the Indenture except a continuing Default in payment of the principal of, premium, if any, or interest, if any, on, any of the Securities
held by a non-consenting Holder. 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.
15. Trustee Dealings with the 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.
16. No Recourse Against Others. A director, officer, employee, incorporator or stockholder, of the Company, as such, shall
not have any liability for any obligations of the Company under the Securities 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.
17. Authentication. This Security shall not be valid until authenticated by the manual signature of the Trustee or an
authenticating agent in accordance with the Indenture.
18. 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).
19. CUSIP and ISIN Numbers. Pursuant to a recommendation promulgated by the Committee on Uniform Security
Identification Procedures, the Company has caused CUSIP and ISIN numbers to be printed on the Securities and the Trustee may use CUSIP and ISIN 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.
THE COMPANY SHALL FURNISH TO ANY HOLDER UPON WRITTEN REQUEST AND WITHOUT CHARGE A COPY OF THE BASE INDENTURE OR THE SUPPLEMENTAL INDENTURE.
REQUESTS MAY BE MADE TO:
American Tower Corporation
116 Huntington Avenue
Telecopier No.: (617) 375-7575
Attention: Investor Relations