As of the latest Form 4 filed Jun 3, 2026.
What American Tower Corp insiders — officers, directors and 10% owners — have bought and sold in their own stock, straight from their SEC Form 4 filings. Values are shares × the reported transaction price where both are disclosed.
Buys plotted up, sells down; bar height is the disclosed dollar value (shares × reported price). Our Form 4 history is only complete from mid-2026, so early months are sparse — the series fills in as more filings land. Open-market purchases and sales only.
Newest filing first — the 59 most recent filings for AMT.
| Filed | Trade date | Insider | Transaction | Shares | Price | Value | 10b5-1 | Filing |
|---|---|---|---|---|---|---|---|---|
| 2026-06-03 | 2026-06-01 | Meyer Robert Joseph SVP & Advisor to the CFO | FTax | −153.00 | $187.53 | $28.7K | No | Form 4 ↗ |
| 2026-06-01 | 2026-05-28 | REEVE PAMELA D A Director | GGift | −810.00 | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-04-30 | 2026-04-29 | Dowling Ruth T EVP, Chief Admin Ofr, GC & Sec | SSale | −416.00 | $177.54 | $73.9K | Yes (planned) | Form 4 ↗ |
| 2026-04-30 | 2026-04-28 | Dowling Ruth T, EVP, Chief Admin Ofr, GC & Sec | SSale | −556.00 | $178.48 | $99.2K | Yes (planned) | Form 4 ↗ |
| 2026-03-12 | 2026-03-11 | Rossi Richard C EVP & President, U.S. Tower | FTax | −684.00 | $182.85 | $125K | No | Form 4 ↗ |
| 2026-03-12 | 2026-03-11 | Font Juan SVP, Pres. & CEO, CoreSite | FTax | −928.00 | $182.85 | $170K | No | Form 4 ↗ |
| 2026-03-12 | 2026-03-11 | Smith Rodney M EVP, CFO & Treasurer | FTax | −1.29K | $182.85 | $237K | No | Form 4 ↗ |
| 2026-03-12 | 2026-03-11 | Meyer Robert Joseph SVP & Chief Accounting Officer | FTax | −684.00 | $182.85 | $125K | No | Form 4 ↗ |
| 2026-03-12 | 2026-03-11 | Dowling Ruth T EVP, Chief Admin Ofr, GC & Sec | FTax | −863.00 | $182.85 | $158K | No | Form 4 ↗ |
| 2026-03-12 | 2026-03-11 | Noel Eugene M EVP & Chief Operating Officer | FTax | −719.00 | $182.85 | $131K | No | Form 4 ↗ |
| 2026-03-12 | 2026-03-11 | Vondran Steven O President and CEO | FTax | −2.16K | $182.85 | $395K | No | Form 4 ↗ |
| 2026-03-12 | 2026-03-10 | Rossi Richard C EVP & President, U.S. Tower | FTax | −1.54K | $186.12 | $287K | No | Form 4 ↗ |
| 2026-03-12 | 2026-03-10 | Rossi Richard C, EVP & President, U.S. Tower | AAward | +6.45K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-12 | 2026-03-10 | Font Juan SVP, Pres. & CEO, CoreSite | FTax | −1.83K | $186.12 | $341K | No | Form 4 ↗ |
| 2026-03-12 | 2026-03-10 | Font Juan, SVP, Pres. & CEO, CoreSite | AAward | +8.06K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-12 | 2026-03-10 | Smith Rodney M EVP, CFO & Treasurer | FTax | −12.4K | $186.12 | $2.31M | No | Form 4 ↗ |
| 2026-03-12 | 2026-03-10 | Smith Rodney M, EVP, CFO & Treasurer | AAward | +10.5K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-12 | 2026-03-10 | Meyer Robert Joseph SVP & Chief Accounting Officer | FTax | −1.37K | $186.12 | $255K | No | Form 4 ↗ |
| 2026-03-12 | 2026-03-10 | Meyer Robert Joseph, SVP & Chief Accounting Officer | AAward | +4.03K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-12 | 2026-03-10 | Dowling Ruth T EVP, Chief Admin Ofr, GC & Sec | FTax | −6.63K | $186.12 | $1.23M | No | Form 4 ↗ |
| 2026-03-12 | 2026-03-10 | Dowling Ruth T, EVP, Chief Admin Ofr, GC & Sec | AAward | +6.88K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-12 | 2026-03-10 | Noel Eugene M EVP & Chief Operating Officer | FTax | −2.50K | $186.12 | $465K | No | Form 4 ↗ |
| 2026-03-12 | 2026-03-10 | Noel Eugene M, EVP & Chief Operating Officer | AAward | +8.17K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-12 | 2026-03-10 | Vondran Steven O President and CEO | FTax | −15.3K | $186.12 | $2.84M | No | Form 4 ↗ |
| 2026-03-12 | 2026-03-10 | Vondran Steven O, President and CEO | AAward | +21.0K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-12 | 2026-03-10 | Chambliss Kelly C Director | AAward | +1.21K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-12 | 2026-03-10 | MACNAB CRAIG Director | AAward | +1.21K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-12 | 2026-03-10 | Kalathur Rajesh Director | PPurchase | +2.67K | $185.30 | $495K | No | Form 4 ↗ |
| 2026-03-12 | 2026-03-10 | Kalathur Rajesh, Director | AAward | +1.21K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-12 | 2026-03-10 | HORMATS ROBERT D Director | AAward | +1.21K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-12 | 2026-03-10 | Clarke Teresa Hillary Director | AAward | +1.21K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-12 | 2026-03-10 | REEVE PAMELA D A Director | AAward | +1.21K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-12 | 2026-03-10 | Ray Neville R Director | AAward | +1.21K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-12 | 2026-03-10 | REILLY EUGENE F Director | AAward | +1.21K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-12 | 2026-03-10 | Tanner Bruce L Director | AAward | +1.21K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-12 | 2026-03-10 | Lieblein Grace Director | AAward | +1.21K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-12 | 2026-03-10 | Frank Kenneth R Director | AAward | +1.21K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-06 | 2026-03-04 | Vondran Steven O President and CEO | SSale | −1.77K | $189.82 | $337K | Yes (planned) | Form 4 ↗ |
| 2026-03-06 | 2026-03-04 | Vondran Steven O, President and CEO | SSale | −16.6K | $188.82 | $3.14M | Yes (planned) | Form 4 ↗ |
| 2026-03-06 | 2026-03-04 | Vondran Steven O, President and CEO | SSale | −15.1K | $187.90 | $2.83M | Yes (planned) | Form 4 ↗ |
| 2026-03-06 | 2026-03-04 | Vondran Steven O, President and CEO | MExercise | +33.5K | $94.71 | $3.17M | Yes (planned) | Form 4 ↗ |
| 2026-03-06 | 2026-03-04 | Dowling Ruth T EVP, Chief Admin Ofr, GC & Sec | SSale | −682.00 | $188.51 | $129K | Yes (planned) | Form 4 ↗ |
| 2026-03-04 | 2026-03-02 | Noel Eugene M EVP & Chief Operating Officer | SSale | −6.99K | $192.03 | $1.34M | Yes (planned) | Form 4 ↗ |
| 2026-03-04 | 2026-03-02 | Noel Eugene M, EVP & Chief Operating Officer | SSale | −21.6K | $191.40 | $4.14M | Yes (planned) | Form 4 ↗ |
| 2026-03-04 | 2026-03-02 | Noel Eugene M, EVP & Chief Operating Officer | SSale | −7.38K | $190.29 | $1.40M | Yes (planned) | Form 4 ↗ |
| 2026-03-04 | 2026-03-02 | Noel Eugene M, EVP & Chief Operating Officer | SSale | −5.24K | $189.36 | $993K | Yes (planned) | Form 4 ↗ |
| 2026-03-04 | 2026-03-02 | Noel Eugene M, EVP & Chief Operating Officer | MExercise | +41.2K | $94.71 | $3.90M | Yes (planned) | Form 4 ↗ |
| 2026-03-03 | 2026-02-27 | Dowling Ruth T EVP, Chief Admin Ofr, GC & Sec | SSale | −656.00 | $186.16 | $122K | Yes (planned) | Form 4 ↗ |
| 2026-03-03 | 2026-02-27 | Meyer Robert Joseph SVP & Chief Accounting Officer | SSale | −4.45K | $186.73 | $832K | No | Form 4 ↗ |
| 2026-02-27 | 2026-02-25 | Dowling Ruth T EVP, Chief Admin Ofr, GC & Sec | AAward | +11.1K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-02-27 | 2026-02-25 | Smith Rodney M EVP, CFO & Treasurer | AAward | +21.4K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-02-27 | 2026-02-25 | Vondran Steven O President and CEO | AAward | +24.6K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-02-19 | 2026-02-17 | Smith Rodney M EVP, CFO & Treasurer | SSale | −1.00 | $193.13 | $193.13 | Yes (planned) | Form 4 ↗ |
| 2026-02-19 | 2026-02-17 | Smith Rodney M, EVP, CFO & Treasurer | SSale | −22.7K | $192.49 | $4.36M | Yes (planned) | Form 4 ↗ |
| 2026-02-19 | 2026-02-17 | Smith Rodney M, EVP, CFO & Treasurer | SSale | −9.60K | $191.52 | $1.84M | Yes (planned) | Form 4 ↗ |
| 2026-02-19 | 2026-02-17 | Smith Rodney M, EVP, CFO & Treasurer | SSale | −2.09K | $190.35 | $397K | Yes (planned) | Form 4 ↗ |
| 2026-02-19 | 2026-02-17 | Smith Rodney M, EVP, CFO & Treasurer | MExercise | +34.3K | $94.71 | $3.25M | Yes (planned) | Form 4 ↗ |
| 2024-05-03 | 2024-05-01 | Smith Rodney M EVP, CFO & Treasurer | FTax | −330.00 | $176.84 | $58.4K | No | Form 4 ↗ |
| 2024-05-03 | 2024-05-01 | Bartlett Thomas A Insider | FTax | −575.00 | $176.84 | $102K | No | Form 4 ↗ |
Insiders — a company’s officers, directors and holders of more than 10% of its stock — must report any trade in that stock to the SEC on a Form 4 within two business days. Each row here is one transaction from those filings.
The transaction code tells you what happened: Purchase (P) and Sale (S) are open-market trades — the ones markets watch most; Award (A) is a granted stock or unit, Option exercise (M) converts options into shares, and Gift (G) is a transfer for no consideration. Awards, exercises and gifts are largely compensation or administrative, not a directional bet.
One caveat on sales: many are made under a Rule 10b5-1 plan scheduled months in advance, so a sale is not automatically a bearish signal. Insider activity is a noisy input — read it alongside the filings, not on its own.
See also AMT’s full analysis or the market-wide insider trading feed. The tabs above jump to AMT’s other SEC data.
Source: SEC Form 4 filings for AMT, parsed from EDGAR. Transaction prices are as reported in the filing — SEC public-domain data, not market quotes. Values are shares × reported price where both are disclosed; grants and gifts often carry no price. A delayed record of what insiders reported, not a live position or a recommendation.
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