American Tower Corporation (AMT) Insider Trading
Over the last 3 months, AMT insiders made 1 open-market buy and 2 sales, a net purchase of $322K (SEC Form 4). Over the last 6 months, 1386 institutions increased and 1504 reduced their position (13F).
Insider Activity
Sentiment
74/100
Buys (3m)
1
Sells (3m)
2
Net (3m)
$321.8K
Insiders buyingFirst buy in 1 quarters
Insider trades by month Buys Sells
Mar
Aug
Nov
Feb
Mar
Apr
Context3-month price +3.3%Institutions mixed (13F)
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| 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 | Noel Eugene Mofficer: EVP & Chief Operating Officer | Tax | 2,498 | $186.12 |
| Mar 12, 2026 | REEVE PAMELA D Adirector | Grant | 1,209 | — |
| Mar 12, 2026 | Noel Eugene Mofficer: EVP & Chief Operating Officer | Tax | 719 | $182.85 |
| Mar 12, 2026 | Noel Eugene Mofficer: EVP & Chief Operating Officer | Grant | 8,167 | — |
| Mar 12, 2026 | REILLY EUGENE Fdirector | Grant | 1,209 | — |
| Mar 12, 2026 | Rossi Richard Cofficer: EVP & President, U.S. Tower | Tax | 684 | $182.85 |
| Mar 12, 2026 | Ray Neville Rdirector | Grant | 1,209 | — |
| Mar 12, 2026 | Smith Rodney Mofficer: EVP, CFO & Treasurer | Grant | 10,531 | — |
| Mar 12, 2026 | Meyer Robert Josephofficer: SVP & Chief Accounting Officer | Tax | 1,368 | $186.12 |
| Mar 12, 2026 | Dowling Ruth Tofficer: EVP, Chief Admin Ofr, GC & Sec | Tax | 863 | $182.85 |
| Mar 12, 2026 | MACNAB CRAIGdirector | Grant | 1,209 | — |
| Mar 12, 2026 | Kalathur Rajeshdirector | Buy | 2,671 | $185.30 |
| Mar 12, 2026 | Rossi Richard Cofficer: EVP & President, U.S. Tower | Tax | 1,544 | $186.12 |
| Mar 12, 2026 | Vondran Steven Odirector, officer: President and CEO | Tax | 15,269 | $186.12 |
| Mar 12, 2026 | Kalathur Rajeshdirector | Grant | 1,209 | — |
| Mar 12, 2026 | Clarke Teresa Hillarydirector | Grant | 1,209 | — |
| Mar 12, 2026 | Dowling Ruth Tofficer: EVP, Chief Admin Ofr, GC & Sec | Tax | 6,629 | $186.12 |
| Mar 12, 2026 | Smith Rodney Mofficer: EVP, CFO & Treasurer | Tax | 12,433 | $186.12 |
| Mar 12, 2026 | Meyer Robert Josephofficer: SVP & Chief Accounting Officer | Tax | 684 | $182.85 |
| Mar 12, 2026 | Frank Kenneth Rdirector | Grant | 1,209 | — |
| Mar 12, 2026 | Vondran Steven Odirector, officer: President and CEO | Grant | 20,955 | — |
| Mar 12, 2026 | Dowling Ruth Tofficer: EVP, Chief Admin Ofr, GC & Sec | Grant | 6,878 | — |
| Mar 12, 2026 | Chambliss Kelly Cdirector | Grant | 1,209 | — |
| Mar 12, 2026 | Font Juanofficer: SVP, Pres. & CEO, CoreSite | Tax | 928 | $182.85 |
| Mar 12, 2026 | Meyer Robert Josephofficer: SVP & Chief Accounting Officer | Grant | 4,030 | — |
| Mar 12, 2026 | Tanner Bruce Ldirector | Grant | 1,209 | — |
| Mar 12, 2026 | Vondran Steven Odirector, officer: President and CEO | Tax | 2,158 | $182.85 |
| Mar 12, 2026 | HORMATS ROBERT Ddirector | Grant | 1,209 | — |
Source: AMT SEC Form 4 filings, latest Apr 30, 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
1386
New positions
323
Reduced
1504
Sold out
332
Largest moves
| Institution | Action | Shares | Filed |
|---|---|---|---|
| VANGUARD GROUP INC | Increased | 63.8M | Jan 29, 2026 |
| BLACKROCK, INC. | Increased | 45.0M | May 13, 2026 |
| BLACKROCK, INC. | Reduced | 44.0M | Feb 12, 2026 |
| J. STERN & CO. LLP | Increased | 37.7M | Feb 24, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | New Position | 30.4M | May 15, 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | New Position | 27.6M | May 8, 2026 |
| STATE STREET CORP | Increased | 21.4M | May 15, 2026 |
| STATE STREET CORP | Increased | 21.0M | Feb 13, 2026 |
| JPMORGAN CHASE & CO | Increased | 15.1M | May 13, 2026 |
| JPMORGAN CHASE & CO | Reduced | 14.4M | Feb 11, 2026 |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 13.9M | May 15, 2026 |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 13.5M | Feb 9, 2026 |
| COHEN & STEERS, INC. | Increased | 12.6M | May 15, 2026 |
| COHEN & STEERS, INC. | Reduced | 12.5M | Feb 13, 2026 |
| FMR LLC | Reduced | 12.0M | Feb 17, 2026 |
Source: SEC Form 13F filings. For informational purposes only — not investment advice.