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AMT 424B2: Secondary offering

Filed with the SEC on · accession 0001193125-26-455424

AMT filed a 424B2 (prospectus (offering)) with the SEC on Nov 10, 2026. American Tower Corporation priced a $1.5 billion public offering of three series of senior unsecured notes due 2031, 2033, and 2036, which will be consolidated and fungible with existing notes of the same series. The stock moved +0.7% by the first close after the filing.

Summary of the filing

American Tower Corporation priced a $1.5 billion public offering of three series of senior unsecured notes due 2031, 2033, and 2036, which will be consolidated and fungible with existing notes of the same series. Net proceeds before expenses are approximately $1.479 billion.

For details, click here →How to read a 424B2 →

Key details

Total offering amount$1.5B
2031 notes principal amount$450.0M
2033 notes principal amount$500.0M
2036 notes principal amount$550.0M
Net proceeds before expenses$1.5B
Underwriting discount$9.4M
IssuerAmerican Tower Corporation
Joint book-running managerTD Securities
Joint book-running managerING
Joint book-running managerMizuho
Joint book-running managerRBC Capital Markets
Joint book-running managerSMBC Nikko

How AMT stock reacted

Close before

$189.00

Nov 9, 2026

First close after

+0.72%

$190.37

5 trading days

—

Since filing

+1.40%

$191.64

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Frequently asked questions

What did AMT file with the SEC on Nov 10, 2026?

AMT filed a 424B2 (Secondary offering). American Tower Corporation priced a $1.5 billion public offering of three series of senior unsecured notes due 2031, 2033, and 2036, which will be consolidated and fungible with existing notes of the same series. Net proceeds before expenses are approximately $1.479 billion.

What does a secondary offering mean for AMT stock?

New shares dilute existing holders and are often sold at a discount to the market price.

How do I read a 424B2?

The final terms of an offering of shares or bonds. Look at price, number of shares and the discount to the market price. Large offerings dilute existing shareholders.

Why are SEC filings important?

Public companies must tell the SEC about anything that can change their value — results, leadership changes, big deals, new shares, bankruptcy. Filings are the official source, often before the news. A 424B2 (prospectus (offering)): The final terms of an offering of shares or bonds.

How did AMT stock react to this filing?

AMT closed at $189.00 before the filing and $190.37 on Nov 10, 2026 (+0.72%).

Other AMT SEC filings

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