American Tower (NYSE: AMT) adds $575M to 2030 and 2035 note series

Rhea-AI Filing Summary

American Tower Corporation has priced a registered public offering of senior unsecured notes, adding $200.0 million of notes due 2030 and $375.0 million of notes due 2035.

The new 2030 notes carry a 4.900% annual interest rate and are being issued at 102.452% of face value, and will form a single, fully fungible series with the company’s existing $650,000,000 4.900% senior unsecured notes due 2030 issued on March 14, 2025.

The new 2035 notes carry a 5.350% annual interest rate and are being issued at 103.567% of face value, and will consolidate into the existing $350,000,000 5.350% senior unsecured notes due 2035 from March 14, 2025, effectively increasing both series’ total size.

Insights

Corporate debt and capital structure analyst

American Tower upsizes its 2030 and 2035 bond series by $575 million at a premium to par.

American Tower Corporation is issuing an additional $200.0 million of 4.900% senior unsecured notes due 2030 and $375.0 million of 5.350% senior unsecured notes due 2035. Both tranches are being sold above face value, at 102.452% and 103.567% of par, which indicates investor demand strong enough to support pricing at a premium.

The 2030 issuance will be consolidated with the existing $650,000,000 4.900% notes due 2030, while the 2035 issuance will join the existing $350,000,000 5.350% notes due 2035. This creates two larger, more liquid bond series with uniform terms, which can be operationally simpler for both the company and bondholders compared with multiple smaller lines.

The transaction increases total outstanding long-term debt in these specific maturities but does not disclose uses of proceeds in this excerpt. The pricing details and consolidation language are set as of September 11, 2025, and future filings may provide additional context on how this incremental capital fits into the broader funding and refinancing strategy.

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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): September 11, 2025

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.)

116 Huntington Avenue

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
1.950% Senior Notes due 2026			AMT 26B			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
4.100% 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 September 11, 2025, American Tower Corporation (the “Company”) issued a press release (the “Press Release”) announcing that it had priced its registered public offering of senior unsecured notes due 2030 (the “2030 notes”) in an aggregate principal amount of $200.0 million and senior unsecured notes due 2035 (the “2035 notes”) in an aggregate principal amount of $375.0 million. The 2030 notes will be consolidated, form a single series and be fully fungible, with the Company’s outstanding $650,000,000 4.900% senior unsecured notes due 2030 and the 2035 notes will be consolidated, form a single series and be fully fungible, with the Company’s outstanding $350,000,000 5.350% senior unsecured notes due 2035, each issued on March 14, 2025.

The 2030 notes will have an interest rate of 4.900% per annum and are being issued at a price equal to 102.452% of their face value. The 2035 notes will have an interest rate of 5.350% per annum and are being issued at a price equal to 103.567% of their face value.

A copy of the Press Release is filed herewith as Exhibit 99.1 and is incorporated herein by reference.

Item 9.01    Financial Statements and Exhibits.

(d)    Exhibits

Exhibit No.						Description
99.1						Press Release, dated September 11, 2025.
104						Cover Page Interactive Data File (embedded within the Inline XBRL document).

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:			September 11, 2025			By:			/s/ Rodney M. Smith
									Rodney M. Smith
									Executive Vice President, Chief Financial Officer and Treasurer

FAQ

What did American Tower (AMT) announce in this 8-K?

American Tower Corporation announced that it has priced a registered public offering of senior unsecured notes, adding $200.0 million of notes due 2030 and $375.0 million of notes due 2035.

How much new debt is American Tower issuing in the 2030 and 2035 notes?

American Tower is issuing $200.0 million of senior unsecured notes due 2030 and $375.0 million of senior unsecured notes due 2035, for a combined $575.0 million in additional notes.

What are the interest rates on American Tower’s new 2030 and 2035 senior notes?

The new 2030 senior notes have a fixed interest rate of 4.900% per year, while the new 2035 senior notes carry a fixed interest rate of 5.350% per year.

At what prices relative to face value are the new American Tower notes being issued?

The 2030 notes are being issued at 102.452% of face value, and the 2035 notes are being issued at 103.567% of face value, meaning both tranches are priced at a premium to par.

How will the new American Tower 2030 notes interact with existing 2030 debt?

The new 4.900% senior unsecured notes due 2030 will be consolidated, form a single series and be fully fungible with American Tower’s existing $650,000,000 4.900% senior unsecured notes due 2030 issued on March 14, 2025.

How will the new American Tower 2035 notes interact with existing 2035 debt?

The new 5.350% senior unsecured notes due 2035 will be consolidated, form a single series and be fully fungible with American Tower’s existing $350,000,000 5.350% senior unsecured notes due 2035 issued on March 14, 2025.

Where can investors find the full details of American Tower’s note offering?

Details are summarized in the 8-K, and a related press release dated September 11, 2025 is filed as Exhibit 99.1 and incorporated by reference.