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AMERICAN TOWER CORP /MA/

Real Estate Investment Trusts · DE · CIK 1053507

Owns, operates, and develops communications real estate, leasing space on towers and in data centers

red 8-K · 90d🔥 High media attention
$87.21B
Market cap
$168.67
Last close
-3.9%
1D
-4.4%
5D
3.6M
Volume
Price · last 39 sessions-6.8%
May 4L $168.67 · H $194.12Jun 29
324
Total filings
Jun 4, 2026
Last filing
12/31
Fiscal year end
8-KCompany UpdateJun 4, 20268-KCompany UpdateJun 2, 20268-KMaterial Agreement · New Debt / ObligationMay 27, 20268-KExecutive Change · Shareholder VoteMay 21, 20268-KCompany UpdateMay 19, 2026424B5424B5May 19, 20268-KMaterial Agreement · New Debt / ObligationMay 7, 2026DEFA14ADEFA14AApr 28, 202610-Q10-QApr 28, 20268-KResults of OperationsApr 28, 2026DEFA14ADEFA14AApr 8, 2026DEF 14ADEF 14AApr 8, 20268-KExecutive ChangeMar 10, 20268-KCompany UpdateMar 5, 20268-KExecutive ChangeFeb 27, 202610-K10-KFeb 24, 20268-KResults of OperationsFeb 24, 20268-KExecutive ChangeJan 29, 20268-KCompany UpdateJan 28, 2026SC 13D/ASC 13D/ADec 11, 20258-KMaterial Agreement · New Debt / ObligationDec 5, 20258-KCompany UpdateDec 4, 20258-KCompany UpdateDec 2, 2025424B5424B5Dec 2, 20258-KExecutive ChangeNov 7, 202510-Q10-QOct 28, 20258-KResults of OperationsOct 28, 20258-KReg FD DisclosureSep 24, 20258-KExecutive Change · Company UpdateSep 18, 20258-KMaterial Agreement · New Debt / ObligationSep 16, 20258-KCompany UpdateSep 11, 2025424B5424B5Sep 11, 20258-KReg FD DisclosureSep 5, 20258-KExecutive ChangeAug 25, 202510-Q10-QJul 29, 20258-KResults of OperationsJul 29, 20258-KMaterial Agreement · New Debt / ObligationMay 30, 20258-KCompany UpdateMay 21, 2025424B5424B5May 21, 20258-KShareholder Vote · Company UpdateMay 15, 202510-Q10-QApr 29, 20258-KResults of OperationsApr 29, 2025DEFA14ADEFA14AApr 2, 2025DEF 14ADEF 14AApr 2, 20258-KExecutive ChangeMar 20, 20258-KMaterial Agreement · New Debt / ObligationMar 14, 20258-KCompany UpdateMar 11, 2025424B5424B5Mar 11, 20258-KCompany UpdateMar 6, 20258-KExecutive ChangeMar 5, 202510-K10-KFeb 25, 20258-KResults of OperationsFeb 25, 20258-KExecutive ChangeFeb 5, 20258-KMaterial Agreement · New Debt / ObligationJan 28, 20258-KExecutive Change · Bylaw AmendmentJan 7, 20258-KCompany UpdateDec 5, 20248-KMaterial Agreement · New Debt / ObligationNov 21, 20248-KCompany UpdateNov 19, 2024424B5424B5Nov 18, 20248-KExecutive ChangeOct 31, 202410-Q10-QOct 29, 20248-KResults of OperationsOct 29, 20248-KCompany UpdateSep 12, 20248-KReg FD DisclosureSep 12, 202410-Q10-QJul 30, 20248-KResults of OperationsJul 30, 20248-KMaterial Agreement · New Debt / ObligationMay 29, 20248-KExecutive Change · Shareholder VoteMay 24, 20248-KCompany UpdateMay 22, 2024424B5424B5May 22, 202410-Q10-QApr 30, 20248-KResults of OperationsApr 30, 2024DEFA14ADEFA14AApr 10, 2024DEF 14ADEF 14AApr 10, 20248-KExecutive Change · Company UpdateMar 14, 20248-KMaterial Agreement · New Debt / ObligationMar 7, 20248-KCompany UpdateMar 4, 2024424B5424B5Mar 4, 20248-KExecutive ChangeMar 1, 202410-K10-KFeb 27, 2024

Insider Activity

In the 90 days to Mar 10, 2026: 1 insider bought $495K · 5 sold $21.9M.

DateInsiderActionSharesPriceValue
Mar 10, 2026Kalathur RajeshDirectorBuy2,671$185.30$495K
Mar 4, 2026Vondran Steven OPresident and CEOSell16,625$188.82$3.1M
Mar 4, 2026Vondran Steven OPresident and CEOSell15,084$187.90$2.8M
Mar 4, 2026Vondran Steven OPresident and CEOSell1,773$189.82$337K
Mar 4, 2026Dowling Ruth TEVP, Chief Admin Ofr, GC & SecSell682$188.51$129K
Mar 2, 2026Noel Eugene MEVP & Chief Operating OfficerSell21,604$191.40$4.1M
Mar 2, 2026Noel Eugene MEVP & Chief Operating OfficerSell7,378$190.29$1.4M
Mar 2, 2026Noel Eugene MEVP & Chief Operating OfficerSell6,985$192.03$1.3M
Mar 2, 2026Noel Eugene MEVP & Chief Operating OfficerSell5,242$189.36$993K
Feb 27, 2026Meyer Robert JosephSVP & Chief Accounting OfficerSell4,454$186.73$832K
Feb 27, 2026Dowling Ruth TEVP, Chief Admin Ofr, GC & SecSell656$186.16$122K
Feb 17, 2026Smith Rodney MEVP, CFO & TreasurerSell22,658$192.49$4.4M
Feb 17, 2026Smith Rodney MEVP, CFO & TreasurerSell9,596$191.52$1.8M
Feb 17, 2026Smith Rodney MEVP, CFO & TreasurerSell2,086$190.35$397K
Feb 17, 2026Smith Rodney MEVP, CFO & TreasurerSell1$193.13$193
Oct 31, 2025Reilly Eugene FDirectorBuy5,554$178.99$994K

Open-market buys & sells (Form 4, transaction codes P/S). Source: SEC structured insider data.

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