AMT American Tower Corp.
American Tower Corp. (AMT) Insider Activity
What the officers, directors and large holders did with their own shares. Only open-market purchases and sales count toward the totals — grants, option exercises and shares withheld for tax are compensation mechanics, not decisions, and they're listed separately below.
How much of that selling was preplanned? 35% planned / 65% discretionary
Largest single sale: $894.5K.
Where they traded
Last open-market purchase: August 21, 2026 , by Kalathur Rajesh .
Recent open-market activity
| Date | Insider | Role | Action | Shares | Price | Value | Held after |
|---|---|---|---|---|---|---|---|
| Kalathur Rajesh | Director | Buy | 2,829 | $177.00 | $500.7K | 7,765 | |
| Meyer Robert Joseph | SVP & Advisor to the CFO | Sell | 5,000 | $178.89 | $894.5K | 21,428 −18.9% of holding | |
| Dowling Ruth T | EVP, Chief Admin Ofr, GC & Sec | Sell 10b5-1 | 1,106 | $174.96 | $193.5K | 27,711 −3.8% of holding | |
| Dowling Ruth T | EVP, Chief Admin Ofr, GC & Sec | Sell 10b5-1 | 685 | $169.54 | $116.1K | 28,817 −2.3% of holding | |
| Dowling Ruth T | EVP, Chief Admin Ofr, GC & Sec | Sell 10b5-1 | 416 | $177.54 | $73.9K | 29,461 −1.4% of holding | |
| Dowling Ruth T | EVP, Chief Admin Ofr, GC & Sec | Sell 10b5-1 | 556 | $178.48 | $99.2K | 29,877 −1.8% of holding |
Form 4s are due within two business days of a transaction, so this is close to real time — unlike the quarterly 13F data on the Institutional tab. A single large sale often reflects a prearranged 10b5-1 plan rather than a fresh view, so read a pattern of sales rather than any one of them.