EVP, Chief Admin Ofr, GC & Sec

SVP & Advisor to the CFO

Director

Other

American Tower owns and operates about 150,000 wireless towers throughout the US, Asia, Latin America, Europe, and Africa. It also owns and/or operates 30 data centers in 11 US markets through its CoreSite segment. The company's customer base in the tower business is very concentrated, with most revenue in each market generated by the top three or four mobile carriers. The company operates 42,000 towers in the US, which accounted for about half of total revenue in 2025. Outside the US, American Tower operates about 47,000 towers in Latin America (dominated by Brazil), 33,000 towers in Europe, and 28,000 towers in Africa. American Tower operates as a REIT.

Institution	Shares	Value	Change
Davenport &	1,049,635	$172M	INCREASED
Sarasin & Partners	849,693	$139M	DECREASED
Commonwealth of Pennsylvania Public School Empls Retrmt Sys	848,826	$139M	DECREASED
Swedbank AB	489,581	$80M	DECREASED
Rathbones Group	459,693	$75M	DECREASED

Insider	Type	Shares	Value	Date
Ruth T Dowling (EVP, Chief Admin Ofr, GC & Sec)	SELL	1,106	$194K	2026-07-28
Ruth T Dowling (EVP, Chief Admin Ofr, GC & Sec)	SELL	685	$116K	2026-07-28
Robert Joseph Meyer (SVP & Advisor to the CFO)	SELL	153	$29K	2026-06-01
Pamela D A Reeve (Director)	GIFT	810		2026-05-28
Robert D Hormats (Other)	OTHER			2026-05-20

American Tower Corporation (AMT) Ownership & Trading Activity

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