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~~is providing an update regarding its relationship with DISH Wireless L.L.C., a ~~notice~~subsidiary of ~~partial~~DISH ~~redemption~~Network ~~for~~Corporation ~~€250,000,000~~(“DISH”). The Company delivered a notice of ~~its~~termination, ~~outstanding~~effective ~~€600~~June 2,~~000~~ 2026,~~000~~ ~~aggregate~~to ~~principal~~DISH ~~amount~~of ~~4.125%~~the ~~senior~~Company’s ~~unsecured~~Strategic ~~notes~~Collocation ~~due~~Agreement ~~2027~~entered into in March 2021 (the “4SCA”) and related agreements with DISH.~~125~~ Beginning on January 1, 2026, 100% ~~Notes”)~~of DISH revenue has been reflected in churn and this termination is not expected to impact the Company’s financial results for the year ending December 31, 2026. The Company continues to pursue litigation against DISH with respect to its obligations under the SCA.

InCautionary ~~accordance~~Language ~~with~~Regarding 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 makeForward-~~whole~~Looking 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.Statements

This current report on Form 8-K contains “forward-looking statements” concerning the Company’s goals, beliefs, expectations, strategies, objectives, plans, future operating results and underlying assumptions and other statements that are not necessarily based on historical facts. Actual results may differ materially from those indicated in the Company’s forward-looking statements as a result of various factors, including those factors set forth under the caption “Risk Factors” in Item 1A of its most recent annual report on Form 10-K, and other risks described in documents the Company subsequently files from time to time with the Securities and Exchange Commission. The Company undertakes no obligation to update the information contained in this current report on Form 8-K to reflect subsequently occurring events or circumstances.

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 24, 2026	By:	/s/ Rodney M. Smith
			Rodney M. Smith
			Executive Vice President, Chief Financial Officer and Treasurer

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