This press release shall not constitute an offer to sell or a solicitation to buy any securities, nor shall there be any sale of these securities in any state or jurisdiction in which such an offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such state or jurisdiction. The offering was made only by means of a prospectus and related prospectus supplement, which may be obtained by visiting the Securities and Exchange Commission's website at www.sec.gov. Alternatively, you may request these documents by calling BofA Securities, Inc. at 1-800-294-1322, Citigroup Global Markets Inc. at 1-800-831-9146, J.P. Morgan Securities LLC collect at 1-212-834-4533, Morgan Stanley & Co. LLC at 1-866-718-1649 or Santander Investment Securities Inc. at 1-855-403-3636.

American Tower, one of the largest global REITs, is a leading independent owner, operator and developer of multitenant communications real estate with a portfolio of approximately 186,000 communications sites. For more information about American Tower, please visit www.americantower.com.

This press release 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 in Item 1A of its Form 10-K for the year ended December 31, 2020 under the caption "Risk Factors." The Company undertakes no obligation to update the information contained in this press release to reflect subsequently occurring events or circumstances.