AMERICAN TOWER CORP /MA/ (AMT) Insider Transactions
Over the last 12 months, 18 AMERICAN TOWER CORP /MA/ (AMT) insiders filed 65 SEC Form 4 transactions — $1.5M in open-market purchases ( 2 distinct buyers) and $22.2M in open-market sales. 3% of all transactions were executed under a pre-scheduled Rule 10b5-1 trading plan.
- $1.5MOpen-market buys (1y)
- $22.2MOpen-market sells (1y)
- 18Distinct insiders
- 65Transactions filed
- 3%Under Rule 10b5-1 plan
- 2026-06-01Latest filing
Recent Form 4 Filings Most recent 50 of 65 (1-year window)
Each row is a single Form 4 filing event for AMT, sourced directly from SEC EDGAR. The Type column classifies the SEC transaction code into Buy / Sell / Grant / Exercise / Other; the 10b5-1 badge marks trades executed under a pre-scheduled SEC Rule 10b5-1 plan.
| Date | Insider | Title | Type | SEC Code | Value | Shares | Price |
|---|---|---|---|---|---|---|---|
| 2026-06-01 | Meyer Robert Joseph | SVP & Advisor to the CFO | Other | F | $28.7K | 153 | $187.53 |
| 2026-05-28 | REEVE PAMELA D A | — | Other | G | $0 | 810 | $0.00 |
| 2026-04-29 | Dowling Ruth T | EVP, Chief Admin Ofr, GC & Sec | Sell 10b5-1 | S | $73.9K | 416 | $177.54 |
| 2026-04-28 | Dowling Ruth T | EVP, Chief Admin Ofr, GC & Sec | Sell 10b5-1 | S | $99.2K | 556 | $178.48 |
| 2026-03-11 | Rossi Richard C | EVP & President, U.S. Tower | Grant | — | $125.1K | 684 | $182.85 |
| 2026-03-11 | Font Juan | SVP, Pres. & CEO, CoreSite | Grant | — | $169.7K | 928 | $182.85 |
| 2026-03-11 | Smith Rodney M | EVP, CFO & Treasurer | Grant | — | $236.8K | 1,295 | $182.85 |
| 2026-03-11 | Meyer Robert Joseph | SVP & Chief Accounting Officer | Grant | — | $125.1K | 684 | $182.85 |
| 2026-03-11 | Dowling Ruth T | EVP, Chief Admin Ofr, GC & Sec | Grant | — | $157.8K | 863 | $182.85 |
| 2026-03-11 | Noel Eugene M | EVP & Chief Operating Officer | Grant | — | $131.5K | 719 | $182.85 |
| 2026-03-11 | Vondran Steven O | President and CEO | Grant | — | $394.6K | 2,158 | $182.85 |
| 2026-03-10 | Kalathur Rajesh | — | Buy | — | $494.9K | 2,671 | $185.30 |
| 2026-03-10 | Rossi Richard C | EVP & President, U.S. Tower | Grant | — | $0 | 6,448 | $0.00 |
| 2026-03-10 | Rossi Richard C | EVP & President, U.S. Tower | Grant | — | $287.4K | 1,544 | $186.12 |
| 2026-03-10 | Font Juan | SVP, Pres. & CEO, CoreSite | Grant | — | $0 | 8,060 | $0.00 |
| 2026-03-10 | Font Juan | SVP, Pres. & CEO, CoreSite | Grant | — | $341.3K | 1,834 | $186.12 |
| 2026-03-10 | Smith Rodney M | EVP, CFO & Treasurer | Grant | — | $0 | 10,531 | $0.00 |
| 2026-03-10 | Smith Rodney M | EVP, CFO & Treasurer | Grant | — | $2.3M | 12,433 | $186.12 |
| 2026-03-10 | Meyer Robert Joseph | SVP & Chief Accounting Officer | Grant | — | $0 | 4,030 | $0.00 |
| 2026-03-10 | Meyer Robert Joseph | SVP & Chief Accounting Officer | Grant | — | $254.6K | 1,368 | $186.12 |
| 2026-03-10 | Dowling Ruth T | EVP, Chief Admin Ofr, GC & Sec | Grant | — | $0 | 6,878 | $0.00 |
| 2026-03-10 | Dowling Ruth T | EVP, Chief Admin Ofr, GC & Sec | Grant | — | $1.2M | 6,629 | $186.12 |
| 2026-03-10 | Noel Eugene M | EVP & Chief Operating Officer | Grant | — | $0 | 8,167 | $0.00 |
| 2026-03-10 | Noel Eugene M | EVP & Chief Operating Officer | Grant | — | $464.9K | 2,498 | $186.12 |
| 2026-03-10 | Vondran Steven O | President and CEO | Grant | — | $0 | 20,955 | $0.00 |
| 2026-03-10 | Vondran Steven O | President and CEO | Grant | — | $2.8M | 15,269 | $186.12 |
| 2026-03-10 | Chambliss Kelly C | — | Grant | — | $0 | 1,209 | $0.00 |
| 2026-03-10 | MACNAB CRAIG | — | Grant | — | $0 | 1,209 | $0.00 |
| 2026-03-10 | Kalathur Rajesh | — | Grant | — | $0 | 1,209 | $0.00 |
| 2026-03-10 | HORMATS ROBERT D | — | Grant | — | $0 | 1,209 | $0.00 |
| 2026-03-10 | Clarke Teresa Hillary | — | Grant | — | $0 | 1,209 | $0.00 |
| 2026-03-10 | REEVE PAMELA D A | — | Grant | — | $0 | 1,209 | $0.00 |
| 2026-03-10 | Ray Neville R | — | Grant | — | $0 | 1,209 | $0.00 |
| 2026-03-10 | REILLY EUGENE F | — | Grant | — | $0 | 1,209 | $0.00 |
| 2026-03-10 | Tanner Bruce L | — | Grant | — | $0 | 1,209 | $0.00 |
| 2026-03-10 | Lieblein Grace | — | Grant | — | $0 | 1,209 | $0.00 |
| 2026-03-10 | Frank Kenneth R | — | Grant | — | $0 | 1,209 | $0.00 |
| 2026-03-04 | Vondran Steven O | President and CEO | Grant | — | $3.2M | 33,482 | $94.71 |
| 2026-03-04 | Vondran Steven O | President and CEO | Grant | — | $0 | 33,482 | $0.00 |
| 2026-03-04 | Vondran Steven O | President and CEO | Sell | — | $2.8M | 15,084 | $187.90 |
| 2026-03-04 | Vondran Steven O | President and CEO | Sell | — | $3.1M | 16,625 | $188.82 |
| 2026-03-04 | Vondran Steven O | President and CEO | Sell | — | $336.6K | 1,773 | $189.82 |
| 2026-03-04 | Dowling Ruth T | EVP, Chief Admin Ofr, GC & Sec | Sell | — | $128.6K | 682 | $188.51 |
| 2026-03-02 | Noel Eugene M | EVP & Chief Operating Officer | Grant | — | $3.9M | 41,209 | $94.71 |
| 2026-03-02 | Noel Eugene M | EVP & Chief Operating Officer | Grant | — | $0 | 41,209 | $0.00 |
| 2026-03-02 | Noel Eugene M | EVP & Chief Operating Officer | Sell | — | $992.6K | 5,242 | $189.36 |
| 2026-03-02 | Noel Eugene M | EVP & Chief Operating Officer | Sell | — | $1.4M | 7,378 | $190.29 |
| 2026-03-02 | Noel Eugene M | EVP & Chief Operating Officer | Sell | — | $4.1M | 21,604 | $191.40 |
| 2026-03-02 | Noel Eugene M | EVP & Chief Operating Officer | Sell | — | $1.3M | 6,985 | $192.03 |
| 2026-02-27 | Meyer Robert Joseph | SVP & Chief Accounting Officer | Sell | — | $831.7K | 4,454 | $186.73 |
Showing the most recent 50 of 65 transactions. For the full 1-year history with sorting, filtering, and cross-ticker industry context, open the full insider transactions drilldown.
Top Insider Buyers of AMT By dollar volume, 1-year window
- REILLY EUGENE F $994.1K
- Kalathur Rajesh $494.9K
Methodology & FAQ
How We Track AMT Insider Transactions
Form 4 disclosures are sourced directly from SEC EDGAR and re-ingested on every pipeline cycle. A complete description of transaction-code handling, the open-market vs grant distinction, and the Rule 10b5-1 plan-reference heuristic is documented in the Methodology.
What is an SEC Form 4 filing for AMERICAN TOWER CORP /MA/?
Form 4 is a transaction-level disclosure that corporate insiders — officers, directors, and beneficial owners of more than 10% of a registered class of equity securities — must file with the SEC within two business days of any change in their beneficial ownership of AMERICAN TOWER CORP /MA/ (AMT) shares.
What is a Rule 10b5-1 trading plan?
Rule 10b5-1 is an SEC rule that lets insiders schedule trades in advance under a written plan, providing an affirmative defense against insider-trading allegations as long as the plan was adopted in good faith and not while in possession of material non-public information. Form 4 rows marked "10b5-1" on this page indicate the underlying trade was executed under such a plan; rows without the badge are discretionary or did not reference a plan in the Form 4 footnotes.
How is "insider buying" different from a stock grant or option exercise?
An insider buy (SEC transaction code P) is an open-market purchase of AMERICAN TOWER CORP /MA/ (AMT) stock executed at the prevailing market price using the insider's personal capital. Stock grants (code A) and option exercises (code M) are compensation events, not directional trades; they are tracked separately and excluded from the "conviction" signal because they are not discretionary purchases.
How recent is the data?
Form 4 transactions are typically reported within two business days of execution. Pactolio re-ingests the EDGAR feed on a nightly cycle and reflects new filings on the next ingest run, typically within 24 hours of EDGAR acceptance. The table on this page covers the most recent 1-year window.