American Tower Corporation (AMT) Insider Trading

Over the last 3 months, AMT insiders made 1 open-market buy and 3 sales, a net sale of -$703K (SEC Form 4). Over the last 6 months, 1399 institutions increased and 1344 reduced their position (13F).

Insider Activity

Sentiment
26/100
Buys (3m)
1
Sells (3m)
3
Net (3m)
-$703.4K
Insiders buyingFirst buy in 2 quarters
Insider trades by month Buys Sells
Nov
Feb
Mar
Apr
Jul
Aug
Context3-month price -6.3%Institutions mixed (13F)
DateInsiderTypeSharesPrice
Aug 25, 2026Kalathur RajeshdirectorBuy2,829$177.00
Jul 31, 2026Meyer Robert Josephofficer: SVP & Advisor to the CFOSell5,000$178.89
Jul 30, 2026Dowling Ruth Tofficer: EVP, Chief Admin Ofr, GC & SecSell685$169.54
Jul 30, 2026Dowling Ruth Tofficer: EVP, Chief Admin Ofr, GC & SecSell1,106$174.96
Apr 30, 2026Dowling Ruth Tofficer: EVP, Chief Admin Ofr, GC & SecSell416$177.54
Apr 30, 2026Dowling Ruth Tofficer: EVP, Chief Admin Ofr, GC & SecSell556$178.48
Mar 12, 2026Chambliss Kelly CdirectorGrant1,209
Mar 12, 2026Tanner Bruce LdirectorGrant1,209
Mar 12, 2026REILLY EUGENE FdirectorGrant1,209
Mar 12, 2026MACNAB CRAIGdirectorGrant1,209
Mar 12, 2026Ray Neville RdirectorGrant1,209
Mar 12, 2026Lieblein GracedirectorGrant1,209
Mar 12, 2026Vondran Steven Odirector, officer: President and CEOGrant20,955
Mar 12, 2026Font Juanofficer: SVP, Pres. & CEO, CoreSiteGrant8,060
Mar 12, 2026Dowling Ruth Tofficer: EVP, Chief Admin Ofr, GC & SecTax6,629$186.12
Mar 12, 2026Noel Eugene Mofficer: EVP & Chief Operating OfficerGrant8,167
Mar 12, 2026Vondran Steven Odirector, officer: President and CEOTax15,269$186.12
Mar 12, 2026Meyer Robert Josephofficer: SVP & Chief Accounting OfficerTax1,368$186.12
Mar 12, 2026Kalathur RajeshdirectorBuy2,671$185.30
Mar 12, 2026Frank Kenneth RdirectorGrant1,209
Mar 12, 2026Kalathur RajeshdirectorGrant1,209
Mar 12, 2026Meyer Robert Josephofficer: SVP & Chief Accounting OfficerGrant4,030
Mar 12, 2026Vondran Steven Odirector, officer: President and CEOTax2,158$182.85
Mar 12, 2026Clarke Teresa HillarydirectorGrant1,209
Mar 12, 2026Smith Rodney Mofficer: EVP, CFO & TreasurerGrant10,531
Mar 12, 2026Font Juanofficer: SVP, Pres. & CEO, CoreSiteTax928$182.85
Mar 12, 2026Noel Eugene Mofficer: EVP & Chief Operating OfficerTax719$182.85
Mar 12, 2026Noel Eugene Mofficer: EVP & Chief Operating OfficerTax2,498$186.12
Mar 12, 2026Font Juanofficer: SVP, Pres. & CEO, CoreSiteTax1,834$186.12
Mar 12, 2026Smith Rodney Mofficer: EVP, CFO & TreasurerTax1,295$182.85

Source: AMT SEC Form 4 filings, latest Aug 25, 2026. For informational purposes only — not investment advice.

Institutional activity (13F)

How institutions changed their AMT positions over the last 6 months (SEC Form 13F).

Increased
1399
New positions
342
Reduced
1344
Sold out
164
Largest moves
InstitutionActionSharesFiled
BlackRock, Inc.Increased45.8MAug 7, 2026
BLACKROCK, INC.Increased45.0MMay 13, 2026
VANGUARD CAPITAL MANAGEMENT LLCIncreased30.4MAug 13, 2026
VANGUARD CAPITAL MANAGEMENT LLCNew Position30.4MMay 15, 2026
VANGUARD PORTFOLIO MANAGEMENT LLCIncreased27.9MAug 13, 2026
VANGUARD PORTFOLIO MANAGEMENT LLCNew Position27.6MMay 8, 2026
STATE STREET CORPIncreased22.1MAug 7, 2026
STATE STREET CORPIncreased21.4MMay 15, 2026
JPMORGAN CHASE & COIncreased15.1MMay 13, 2026
GEODE CAPITAL MANAGEMENT, LLCIncreased13.9MMay 15, 2026
GEODE CAPITAL MANAGEMENT, LLCReduced13.8MAug 12, 2026
COHEN & STEERS, INC.Increased13.8MAug 14, 2026
COHEN & STEERS, INC.Increased12.6MMay 15, 2026
FMR LLCIncreased11.4MAug 13, 2026
FMR LLCReduced11.3MMay 15, 2026

Source: SEC Form 13F filings. For informational purposes only — not investment advice.