AMERICAN TOWER CORP /MA/

8-K · amt-20260602.htm iXBRL

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 UNITED STATES
 SECURITIES AND EXCHANGE COMMISSION
 WASHINGTON D.C. 20549

 FORM 8-K

 CURRENT REPORT PURSUANT
 TO SECTION 13 OR 15(d) OF THE
 SECURITIES EXCHANGE ACT OF 1934
 Date of Report (Date of Earliest Event Reported): June 2, 2026

 AMERICAN TOWER CORPORATION
 (Exact Name of Registrant as Specified in Charter)

 Delaware
 001-14195
 65-0723837

 (State or Other Jurisdiction of Incorporation)
 (Commission File Number)
 (I.R.S. Employer Identification No.)

 222 Berkeley Street
 Boston , Massachusetts 02116
 (Address of Principal Executive Offices) (Zip Code)
 ( 617 )  375-7500
 (Registrant's telephone number, including area code)
 Not Applicable
 (Former name or former address, if changed since last report.)
 Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):
 ☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
 ☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
 ☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
 ☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))
 Securities registered pursuant to Section 12(b) of the Act:
 Title of each class Trading Symbol(s) Name of each exchange on which registered
 Common Stock, $0.01 par value   AMT New York Stock Exchange
 0.450% Senior Notes due 2027 AMT 27C New York Stock Exchange
 0.400% Senior Notes due 2027 AMT 27D New York Stock Exchange
 4.125% Senior Notes due 2027 AMT 27F New York Stock Exchange
 0.500% Senior Notes due 2028 AMT 28A New York Stock Exchange
 0.875% Senior Notes due 2029 AMT 29B New York Stock Exchange
 0.950% Senior Notes due 2030 AMT 30C New York Stock Exchange
 3.900% Senior Notes due 2030 AMT 30D New York Stock Exchange
 4.625% Senior Notes due 2031 AMT 31B New York Stock Exchange
 1.000% Senior Notes due 2032 AMT 32 New York Stock Exchange
 3.625% Senior Notes due 2032 AMT 32B New York Stock Exchange
 1.250% Senior Notes due 2033 AMT 33 New York Stock Exchange
 4.000% Senior Notes due 2033 AMT 33D New York Stock Exchange
 4.100% Senior Notes due 2034 AMT 34A New York Stock Exchange

 Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).
 Emerging growth company ☐
 If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.☐

 Item 8.01    Other Events.

 On June 2, 2026, American Tower Corporation (the “Company”) sent a notice of partial redemption for €250,000,000 of its outstanding €600,000,000 aggregate principal amount 4.125% senior unsecured notes due 2027 (the “4.125% Notes”).

 In accordance with the redemption provisions of the 4.125% Notes and the Indenture, dated as of June 1, 2022 (the “Base Indenture”), as supplemented by the Supplemental Indenture No. 2, dated as of May 16, 2023 (“Supplemental Indenture No. 2” and, together with the Base Indenture, the “4.125% Indenture”) among the Company, U.S. Bank Trust Company, National Association, as trustee, and U.S. Bank Europe DAC, UK Branch (f/k/a Elavon Financial Services DAC, UK Branch), as paying agent, the 4.125% Notes will be redeemed at a price equal to the principal amount of the 4.125% Notes to be redeemed then outstanding plus a make-whole premium calculated pursuant to the terms of the 4.125% Indenture, together with accrued and unpaid interest, if any, up to, but excluding, the redemption date, which has been set for June 18, 2026. Upon completion of the redemption, €350,000,000 of the 4.125% Notes will remain outstanding.

 SIGNATURE

 Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

 AMERICAN TOWER CORPORATION
 (Registrant)

 Date: June 2, 2026 By: /s/ Rodney M. Smith
 Rodney M. Smith
 Executive Vice President, Chief Financial Officer and Treasurer