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)
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| Aug 25, 2026 | Kalathur Rajeshdirector | Buy | 2,829 | $177.00 |
| Jul 31, 2026 | Meyer Robert Josephofficer: SVP & Advisor to the CFO | Sell | 5,000 | $178.89 |
| Jul 30, 2026 | Dowling Ruth Tofficer: EVP, Chief Admin Ofr, GC & Sec | Sell | 685 | $169.54 |
| Jul 30, 2026 | Dowling Ruth Tofficer: EVP, Chief Admin Ofr, GC & Sec | Sell | 1,106 | $174.96 |
| Apr 30, 2026 | Dowling Ruth Tofficer: EVP, Chief Admin Ofr, GC & Sec | Sell | 416 | $177.54 |
| Apr 30, 2026 | Dowling Ruth Tofficer: EVP, Chief Admin Ofr, GC & Sec | Sell | 556 | $178.48 |
| Mar 12, 2026 | Chambliss Kelly Cdirector | Grant | 1,209 | — |
| Mar 12, 2026 | Tanner Bruce Ldirector | Grant | 1,209 | — |
| Mar 12, 2026 | REILLY EUGENE Fdirector | Grant | 1,209 | — |
| Mar 12, 2026 | MACNAB CRAIGdirector | Grant | 1,209 | — |
| Mar 12, 2026 | Ray Neville Rdirector | Grant | 1,209 | — |
| Mar 12, 2026 | Lieblein Gracedirector | Grant | 1,209 | — |
| Mar 12, 2026 | Vondran Steven Odirector, officer: President and CEO | Grant | 20,955 | — |
| Mar 12, 2026 | Font Juanofficer: SVP, Pres. & CEO, CoreSite | Grant | 8,060 | — |
| Mar 12, 2026 | Dowling Ruth Tofficer: EVP, Chief Admin Ofr, GC & Sec | Tax | 6,629 | $186.12 |
| Mar 12, 2026 | Noel Eugene Mofficer: EVP & Chief Operating Officer | Grant | 8,167 | — |
| Mar 12, 2026 | Vondran Steven Odirector, officer: President and CEO | Tax | 15,269 | $186.12 |
| Mar 12, 2026 | Meyer Robert Josephofficer: SVP & Chief Accounting Officer | Tax | 1,368 | $186.12 |
| Mar 12, 2026 | Kalathur Rajeshdirector | Buy | 2,671 | $185.30 |
| Mar 12, 2026 | Frank Kenneth Rdirector | Grant | 1,209 | — |
| Mar 12, 2026 | Kalathur Rajeshdirector | Grant | 1,209 | — |
| Mar 12, 2026 | Meyer Robert Josephofficer: SVP & Chief Accounting Officer | Grant | 4,030 | — |
| Mar 12, 2026 | Vondran Steven Odirector, officer: President and CEO | Tax | 2,158 | $182.85 |
| Mar 12, 2026 | Clarke Teresa Hillarydirector | Grant | 1,209 | — |
| Mar 12, 2026 | Smith Rodney Mofficer: EVP, CFO & Treasurer | Grant | 10,531 | — |
| Mar 12, 2026 | Font Juanofficer: SVP, Pres. & CEO, CoreSite | Tax | 928 | $182.85 |
| Mar 12, 2026 | Noel Eugene Mofficer: EVP & Chief Operating Officer | Tax | 719 | $182.85 |
| Mar 12, 2026 | Noel Eugene Mofficer: EVP & Chief Operating Officer | Tax | 2,498 | $186.12 |
| Mar 12, 2026 | Font Juanofficer: SVP, Pres. & CEO, CoreSite | Tax | 1,834 | $186.12 |
| Mar 12, 2026 | Smith Rodney Mofficer: EVP, CFO & Treasurer | Tax | 1,295 | $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
| Institution | Action | Shares | Filed |
|---|---|---|---|
| BlackRock, Inc. | Increased | 45.8M | Aug 7, 2026 |
| BLACKROCK, INC. | Increased | 45.0M | May 13, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | Increased | 30.4M | Aug 13, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | New Position | 30.4M | May 15, 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Increased | 27.9M | Aug 13, 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | New Position | 27.6M | May 8, 2026 |
| STATE STREET CORP | Increased | 22.1M | Aug 7, 2026 |
| STATE STREET CORP | Increased | 21.4M | May 15, 2026 |
| JPMORGAN CHASE & CO | Increased | 15.1M | May 13, 2026 |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 13.9M | May 15, 2026 |
| GEODE CAPITAL MANAGEMENT, LLC | Reduced | 13.8M | Aug 12, 2026 |
| COHEN & STEERS, INC. | Increased | 13.8M | Aug 14, 2026 |
| COHEN & STEERS, INC. | Increased | 12.6M | May 15, 2026 |
| FMR LLC | Increased | 11.4M | Aug 13, 2026 |
| FMR LLC | Reduced | 11.3M | May 15, 2026 |
Source: SEC Form 13F filings. For informational purposes only — not investment advice.