AMERICAN TOWER CORP /MA/ Insider Trading Activity
Every SEC Form 4 insider transaction reported for AMERICAN TOWER CORP /MA/ (AMT), sourced directly from SEC EDGAR and updated as new filings are accepted.
By Trabud · Insider-trading data from SEC EDGAR
Latest filing:
Compiled automatically from SEC EDGAR Form 4 filings and refreshed daily. Figures count purchases (code P) and sales (code S) only — not grants, option exercises, or gifts. How this page is built. Not investment advice.
Quick Answer
Are AMT insiders buying or selling?
In the last 12 months, AMERICAN TOWER CORP /MA/ insiders reported 3 open-market purchases ($2.0M) and 9 sales ($23.2M) — net selling of $21.2M. Since January 2018, Trabud has recorded 180 Form 4 filings for AMT: 6 buys ($2.0M) and 174 sells ($357.4M).
Source: SEC EDGAR Form 4
What stands out
- The largest open-market purchase in the last 12 months was $994.1K by Eugene F Reilly (Director) on Nov 4, 2025. SEC ↗
- The most recent open-market purchase was reported on Aug 25, 2026 (54 days ago).
Key Statistics (January 2018 – Aug 25, 2026)
Total Form 4 filings
180
SEC EDGAR
Insider filers
25
Insider buys (6)
$2.0M
Insider sells (174)
$357.4M
Insider sentiment
Net sellingNet insider flow of $355.4M in net selling since January 2018, and $21.2M in net selling over the last 12 months. 1 insider buy in the last 90 days.
Recent AMT insider transactions
| Date | Insider | Role | Type | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| Aug 25, 2026 | Rajesh Kalathur | Director | Purchase | 2.8K | $177.00 | $500.7K | SEC ↗ |
| Jul 31, 2026 | Robert Joseph Meyer | SVP & Advisor to the CFO | Sale | 5.0K | $178.89 | $894.5K | SEC ↗ |
| Jul 30, 2026 | Ruth T Dowling | EVP, Chief Admin Ofr, GC & Sec | Sale | 1.8K | $172.89 | $309.6K | SEC ↗ |
| Apr 30, 2026 | Ruth T Dowling | EVP, Chief Admin Ofr, GC & Sec | Sale | 972 | $178.08 | $173.1K | SEC ↗ |
| Mar 12, 2026 | Rajesh Kalathur | Director | Purchase | 2.7K | $185.30 | $494.9K | SEC ↗ |
| Mar 6, 2026 | Steven O Vondran | President and CEO | Sale | 33.5K | $188.46 | $6.3M | SEC ↗ |
| Mar 6, 2026 | Ruth T Dowling | EVP, Chief Admin Ofr, GC & Sec | Sale | 682 | $188.51 | $128.6K | SEC ↗ |
| Mar 4, 2026 | Eugene M Noel | EVP & Chief Operating Officer | Sale | 41.2K | $191.05 | $7.9M | SEC ↗ |
| Mar 3, 2026 | Robert Joseph Meyer | SVP & Chief Accounting Officer | Sale | 4.5K | $186.73 | $831.7K | SEC ↗ |
| Mar 3, 2026 | Ruth T Dowling | EVP, Chief Admin Ofr, GC & Sec | Sale | 656 | $186.16 | $122.1K | SEC ↗ |
| Feb 19, 2026 | Rodney M Smith | EVP, CFO & Treasurer | Sale | 34.3K | $192.09 | $6.6M | SEC ↗ |
| Nov 4, 2025 | Eugene F Reilly | Director | Purchase | 5.6K | $178.99 | $994.1K | SEC ↗ |
| Aug 1, 2025 | Juan Font | SVP, Pres. & CEO, CoreSite | Sale | 720 | $208.33 | $150.0K | SEC ↗ |
| Mar 19, 2025 | Sanjay Goel | EVP & President, Asia-Pacific | Sale | 4.0K | $215.92 | $863.7K | SEC ↗ |
| Feb 28, 2025 | Robert Joseph Meyer | SVP & Chief Accounting Officer | Sale | 5.7K | $201.67 | $1.1M | SEC ↗ |
| Feb 28, 2025 | A D Reeve Pamela | Director | Sale | 5.0K | $202.97 | $1.0M | SEC ↗ |
| Feb 18, 2025 | Rodney M Smith | EVP, CFO & Treasurer | Sale | 16.6K | $189.70 | $3.1M | SEC ↗ |
| Jan 17, 2025 | Rodney M Smith | EVP, CFO & Treasurer | Sale | 16.6K | $181.10 | $3.0M | SEC ↗ |
| Sep 17, 2024 | Sanjay Goel | EVP & President, Asia-Pacific | Sale | 5.0K | $238.00 | $1.2M | SEC ↗ |
| Sep 12, 2024 | Eugene M Noel | EVP & President, U.S. Tower | Sale | 33.1K | $240.00 | $8.0M | SEC ↗ |
| Sep 5, 2024 | Olivier Puech | EVP & President, LatAm & EMEA | Sale | 19.0K | $230.00 | $4.4M | SEC ↗ |
| Aug 28, 2024 | Olivier Puech | EVP & President, LatAm & EMEA | Sale | 10.0K | $226.35 | $2.3M | SEC ↗ |
| Aug 6, 2024 | Olivier Puech | EVP & President, LatAm & EMEA | Sale | 10.0K | $233.27 | $2.3M | SEC ↗ |
| Aug 6, 2024 | Steven O Vondran | President and CEO | Sale | 21.5K | $230.00 | $5.0M | SEC ↗ |
| Aug 6, 2024 | Sanjay Goel | EVP & President, Asia-Pacific | Sale | 4.8K | $235.39 | $1.1M | SEC ↗ |
Showing the 25 most recent of 180 Form 4 filings for AMERICAN TOWER CORP /MA/.
Most active AMT insiders
- Robert D Hormats24 filings
- Olivier Puech18 filings
- Rodney M Smith16 filings
- Steven O Vondran16 filings
- Samme L Thompson14 filings
Ask anything about AMT insider activity
Use Trabud's AI agent to query AMERICAN TOWER CORP /MA/'s Form 4 history in plain English — "Show me AMT CEO purchases this year" or compare it against any other ticker.
Open the AI agentAMT insider trading FAQ
Are AMERICAN TOWER CORP /MA/ insiders buying or selling?
In the last 12 months, AMERICAN TOWER CORP /MA/ insiders reported 3 open-market purchases ($2.0M) and 9 sales ($23.2M) — net selling of $21.2M. Since January 2018, Trabud has recorded 180 Form 4 filings for AMT: 6 buys ($2.0M) and 174 sells ($357.4M). Over the full record that is net selling of $355.4M.
How many insiders trade AMT stock?
25 distinct insider filers — officers, directors, 10%+ owners, and investment groups filing jointly — have reported Form 4 transactions for AMERICAN TOWER CORP /MA/. The most recent filing was accepted on Aug 25, 2026.
Where does Trabud get AMT insider trading data?
All AMT insider trading data comes directly from official SEC EDGAR Form 4 filings, which corporate insiders must submit within two business days of a transaction under Section 16(a) of the Securities Exchange Act of 1934.