AMT · Insider Trading
American Tower Corporation
Every open-market purchase and sale reported by AMT officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-08-25 | Rajesh Kalathur | Director | Buy | +2,829 | +$500.73K |
| 2026-07-31 | Robert Joseph Meyer | SVP & Advisor to the CFO | Sell | −5,000 | −$894.45K |
| 2026-07-30 | Ruth T Dowling | EVP, Chief Admin Ofr, GC & Sec | Sell | −1,791 | −$309.64K |
| 2026-06-03 | Robert Joseph Meyer | SVP & Advisor to the CFO | F | −153 | −$28.69K |
| 2026-06-01 | Pamela D A Reeve | Director | G | −810 | — |
| 2026-05-20 | Robert D Hormats | — | — | — | — |
| 2026-04-30 | Ruth T Dowling | EVP, Chief Admin Ofr, GC & Sec | Sell | −972 | −$173.09K |
| 2026-03-12 | Kenneth R Frank | Director | A | +1,209 | — |
| 2026-03-12 | Grace Lieblein | Director | A | +1,209 | — |
| 2026-03-12 | Bruce L Tanner | Director | A | +1,209 | — |
| 2026-03-12 | Eugene F Reilly | Director | A | +1,209 | — |
| 2026-03-12 | Neville R Ray | Director | A | +1,209 | — |
| 2026-03-12 | Pamela D A Reeve | Director | A | +1,209 | — |
| 2026-03-12 | Teresa Hillary Clarke | Director | A | +1,209 | — |
| 2026-03-12 | Robert D Hormats | Director | A | +1,209 | — |
| 2026-03-12 | Rajesh Kalathur | Director | MIXED | +3,880 | +$494.94K |
| 2026-03-12 | Craig Macnab | Director | A | +1,209 | — |
| 2026-03-12 | Kelly C Chambliss | Director | A | +1,209 | — |
| 2026-03-12 | Steven O Vondran | President and CEO | MIXED | +3,528 | −$3.24M |
| 2026-03-12 | Eugene M Noel | EVP & Chief Operating Officer | MIXED | +4,950 | −$596.40K |
| 2026-03-12 | Ruth T Dowling | EVP, Chief Admin Ofr, GC & Sec | MIXED | −614 | −$1.39M |
| 2026-03-12 | Robert Joseph Meyer | SVP & Chief Accounting Officer | MIXED | +1,978 | −$379.68K |
| 2026-03-12 | Rodney M Smith | EVP, CFO & Treasurer | MIXED | −3,197 | −$2.55M |
| 2026-03-12 | Juan Font | SVP, Pres. & CEO, CoreSite | MIXED | +5,298 | −$511.03K |
| 2026-03-12 | Richard C Rossi | EVP & President, U.S. Tower | MIXED | +4,220 | −$412.44K |
| 2026-03-06 | Ruth T Dowling | EVP, Chief Admin Ofr, GC & Sec | Sell | −682 | −$128.56K |
| 2026-03-06 | Steven O Vondran | President and CEO | MIXED | — | −$3.14M |
| 2026-03-04 | Eugene M Noel | EVP & Chief Operating Officer | MIXED | — | −$3.97M |
| 2026-03-03 | Ruth T Dowling | EVP, Chief Admin Ofr, GC & Sec | Sell | −656 | −$122.12K |
| 2026-03-03 | Robert Joseph Meyer | SVP & Chief Accounting Officer | Sell | −4,454 | −$831.70K |
| 2026-02-27 | Steven O Vondran | President and CEO | A | +24,626 | — |
| 2026-02-27 | Rodney M Smith | EVP, CFO & Treasurer | A | +21,425 | — |
| 2026-02-27 | Ruth T Dowling | EVP, Chief Admin Ofr, GC & Sec | A | +11,083 | — |
| 2026-02-19 | Rodney M Smith | EVP, CFO & Treasurer | MIXED | — | −$3.34M |
| 2026-01-06 | Olivier Puech | — | — | — | — |
| 2026-01-06 | Juan Font | SVP, Pres. & CEO, CoreSite | F | −419 | −$73.24K |
| 2025-11-04 | Eugene F Reilly | Director | Buy | +5,554 | +$994.11K |
| 2025-10-03 | Ruth T Dowling | EVP, Chief Admin Ofr, GC & Sec | F | −55 | −$10.63K |
| 2025-09-23 | Eugene F Reilly | Director | E | — | — |
| 2025-08-01 | Juan Font | SVP, Pres. & CEO, CoreSite | Sell | −720 | −$150.00K |
| 2025-06-03 | Robert Joseph Meyer JR | SVP & Chief Accounting Officer | F | −162 | −$34.77K |
| 2025-05-16 | Joann A Reed | — | — | — | — |
| 2025-04-02 | Sanjay Goel | — | — | — | — |
| 2025-03-19 | Sanjay Goel | EVP & President, Asia-Pacific | Sell | −4,000 | −$863.68K |
| 2025-03-12 | Kenneth R Frank | Director | A | +1,056 | — |
| 2025-03-12 | Bruce L Tanner | Director | A | +1,056 | — |
| 2025-03-12 | Grace Lieblein | Director | A | +1,056 | — |
| 2025-03-12 | Robert D Hormats | Director | A | +1,056 | — |
| 2025-03-12 | Kelly C Chambliss | Director | A | +1,056 | — |
| 2025-03-12 | Teresa Hillary Clarke | Director | A | +1,056 | — |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| Steven O Vondran | President and CEO | 126,329 | $20.49M |
| Rodney M Smith | EVP, CFO & Treasurer | 93,837 | $15.22M |
| Joann A Reed | Director | 62,940 | $10.21M |
| Olivier Puech | EVP & President, International | 38,144 | $6.19M |
| Eugene M Noel | EVP & Chief Operating Officer | 34,542 | $5.60M |
| Juan Font | SVP, Pres. & CEO, CoreSite | 28,352 | $4.60M |
| Ruth T Dowling | EVP, Chief Admin Ofr, GC & Sec | 27,711 | $4.49M |
| Sanjay Goel | EVP & President, Asia-Pacific | 25,408 | $4.12M |
| Robert Joseph Meyer | SVP & Advisor to the CFO | 21,428 | $3.48M |
| Pamela D A Reeve | Director | 21,089 | $3.42M |
| Richard C Rossi | EVP & President, U.S. Tower | 18,202 | $2.95M |
| Craig Macnab | Director | 15,315 | $2.48M |
| Robert D Hormats | Director | 9,597 | $1.56M |
| Grace Lieblein | Director | 9,141 | $1.48M |
| Rajesh Kalathur | Director | 7,936 | $1.29M |
| Bruce L Tanner | Director | 6,940 | $1.13M |
| Eugene F Reilly | Director | 6,898 | $1.12M |
| Kenneth R Frank | Director | 6,188 | $1.00M |
| Teresa Hillary Clarke | Director | 5,307 | $860.80K |
| Kelly C Chambliss | Director | 4,426 | $717.90K |
| Neville R Ray | Director | 2,265 | $367.38K |
Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.
Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.
Full filing history and per-insider positions are on the AMT quote page; the site-wide leaderboard is on the insider transactions hub.
Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.