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American Tower

XNYS · REAL ESTATE INVESTMENT TRUSTS

3 articles20 insider tx0 holders0 supply chain2 selling intent filings2 new insiders

Research articles

Includes notes from domestic 8-K and foreign private issuer 6-K disclosures.

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Recent insider activity

Insider net $ (monthly)open-market Form 4 only - grants, exercises, tax withholding excluded$20.0M$10.0M$0-$10.0M-$20.0M2024-10 $02024-11 $02024-12 $02025-01 -$3.0M2025-02 -$5.3M2025-03 -$864K2025-04 $02025-05 $02025-06 $02025-07 -$150K2025-08 $02025-09 $02025-10 $994K2025-11 $02025-12 $02026-01 $02026-02 -$7.6M2026-03 -$13.8M2026-04 -$173K2026-05 $02026-06 $02026-07 -$1.2M2026-08 $501K2026-09 $0Oct 24Dec 24Feb 25Apr 25Jun 25Aug 25Oct 25Dec 25Feb 26Apr 26Jun 26Aug 26~ derived from SEC-reported shares x price. Hatched: excluded (implausible price) or unpriced.

open-market Form 4 only - grants, exercises, tax withholding excluded

1 buyers - 2 unique sellers · Institutional activity: not available - insufficient comparable institutions for the latest complete quarter.

Date Insider Title Type Shares Price Value
August 21, 2026 Kalathur Rajesh — BUY 2,829 $177 ~$0.5M
July 29, 2026 Dowling Ruth T EVP, Chief Admin Ofr, GC & Sec SELL -1,106 $175 ~$0.2M
July 29, 2026 Meyer Robert Joseph SVP & Advisor to the CFO SELL -5,000 $179 ~$0.9M
July 28, 2026 Dowling Ruth T EVP, Chief Admin Ofr, GC & Sec SELL -685 $170 ~$0.1M
June 1, 2026 Meyer Robert Joseph SVP & Advisor to the CFO TAX_WITHHOLD -153 $188 ~$29K
May 28, 2026 Reeve Pamela D A — GIFT -810 — —
April 29, 2026 Dowling Ruth T EVP, Chief Admin Ofr, GC & Sec SELL -416 $178 ~$74K
April 28, 2026 Dowling Ruth T EVP, Chief Admin Ofr, GC & Sec SELL -556 $178 ~$99K
March 11, 2026 Rossi Richard C EVP & President, U.S. Tower TAX_WITHHOLD -684 $183 ~$0.1M
March 11, 2026 Font Juan SVP, Pres. & CEO, CoreSite TAX_WITHHOLD -928 $183 ~$0.2M
March 11, 2026 Smith Rodney M EVP, CFO & Treasurer TAX_WITHHOLD -1,295 $183 ~$0.2M
March 11, 2026 Meyer Robert Joseph SVP & Chief Accounting Officer TAX_WITHHOLD -684 $183 ~$0.1M
March 11, 2026 Dowling Ruth T EVP, Chief Admin Ofr, GC & Sec TAX_WITHHOLD -863 $183 ~$0.2M
March 11, 2026 Noel Eugene M EVP & Chief Operating Officer TAX_WITHHOLD -719 $183 ~$0.1M
March 11, 2026 Vondran Steven O President and CEO TAX_WITHHOLD -2,158 $183 ~$0.4M
March 10, 2026 Rossi Richard C EVP & President, U.S. Tower GRANT 6,448 — —
March 10, 2026 Rossi Richard C EVP & President, U.S. Tower TAX_WITHHOLD -1,544 $186 ~$0.3M
March 10, 2026 Font Juan SVP, Pres. & CEO, CoreSite GRANT 8,060 — —
March 10, 2026 Font Juan SVP, Pres. & CEO, CoreSite TAX_WITHHOLD -1,834 $186 ~$0.3M
March 10, 2026 Smith Rodney M EVP, CFO & Treasurer GRANT 10,531 — —

Insider Selling Intent (Form 144)

Date Filer Relationship Est. shares Filing
July 29, 2026 Robert Meyer — 5,000 SEC
July 28, 2026 Ruth T Dowling — 1,791 SEC

New Insiders (Form 3)

Date Insider Title Relationship Shares Filing
September 23, 2026 — — — — SEC
April 30, 2026 — — — — SEC
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