American Tower — Oct 28, 2025 release

Subsequent to September 30, 2025, through October 21, 2025, the Company repurchased approximately 151,000 shares of its common stock for an aggregate of approximately $28.0 million, including commissions and fees. There are no amounts remaining under the Company’s 2011 buyback program. The Company expects to continue managing the pacing of the remaining approximately $2.0 billion under the Company’s 2017 buyback program in response to general market conditions and other relevant factors. F ULL YEAR 2025 OUTLOOK The following full year 2025 estimates are based on a number of assumptions that management believes to be reasonable and reflect the Company’s expectations as of October 28, 2025. Actual results may differ materially from these estimates as a result of various factors, and the Company refers you to the cautionary language regarding “forward-looking statements” included in this press release when considering this information. The Company’s outlook is based on the following average foreign currency exchange rates to 1.00 U.S. Dollar for October 28, 2025 through December 31, 2025: (a) 1,404 Argentinean Pesos; (b) 124 Bangladeshi Taka; (c) 5.55 Brazilian Reais; (d) 1.38 Canadian Dollars; (e) 965 Chilean Pesos; (f) 4,190 Colombian Pesos; (g) 0.86 Euros; (h) 12.30 Ghanaian Cedis; (i) 132 Kenyan Shillings; (j) 19.30 Mexican Pesos; (k) 1,550 Nigerian Naira; (l) 7,390 Paraguayan Guarani; (m) 3.60 Peruvian Soles; (n) 58 Philippine Pesos; (o) 17.50 South African Rand; (p) 3,580 Ugandan Shillings; and (q) 560 West African CFA Francs. The Company’s outlook refl