SEC Form 4 · Updated Daily
AMT
— AMERICAN TOWER CORPORATION OwnershipInsider and institutional ownership derived from SEC Form 4 filings. Click any owner to see their holdings across every company they’ve filed on, and how their position has changed over time.
Current Reporting Owners
| Owner | Role | Shares Owned | As Of | Last Activity |
|---|---|---|---|---|
| Sharma Amit | Reporting Owner | 363,750 | 2021-05-14 | M |
| TAICLET JAMES D JR | Director · Officer | 331,345 | 2020-06-04 | G |
| Bartlett Thomas A | Director | 269,557 | 2024-05-01 | F |
| Marshall Steven C. | Officer | 176,633 | 2018-10-30 | M |
| DiSanto Edmund | Reporting Owner | 162,611 | 2023-03-10 | F |
| MOSKOWITZ STEVEN J | Director · Officer | 158,616 | 2008-11-26 | M |
| Vondran Steven O | Director · Officer | 126,329 | 2026-03-10 | A |
| Smith Rodney M | Officer | 106,270 | 2026-03-10 | A |
| SINGER BRADLEY E | Director | 80,000 | 2008-05-14 | M |
| REED JOANN A | Reporting Owner | 62,940 | 2025-03-10 | A |
| HESS WILLIAM H | Reporting Owner | 60,793 | 2019-06-18 | G |
| Puech Olivier | Reporting Owner | 47,223 | 2025-03-10 | A |
| BUA JEAN A | Officer | 42,500 | 2010-08-18 | M |
| Noel Eugene M | Officer | 37,759 | 2026-03-10 | A |
| Font Juan | Officer | 31,114 | 2026-03-10 | A |
| Dowling Ruth T | Officer | 28,817 | 2026-07-28 | S |
| Goel Sanjay | Reporting Owner | 25,408 | 2025-03-17 | S |
| THOMPSON SAMME L | Director | 24,260 | 2024-03-11 | A |
| Meyer Robert Joseph | Officer | 21,428 | 2026-07-29 | S |
| REEVE PAMELA D A | Director | 21,089 | 2026-05-28 | G |
| DYKES RONALD M | Director | 21,079 | 2015-03-10 | A |
| Rossi Richard C | Officer | 19,746 | 2026-03-10 | A |
| DOLAN RAYMOND P | Reporting Owner | 19,634 | 2024-03-11 | A |
| Blanchett Paul | Officer | 16,299 | 2026-10-01 | A |
| MACNAB CRAIG | Officer | 15,315 | 2026-03-10 | A |
| KATZ CAROLYN | Director | 12,905 | 2017-03-10 | A |
| Lara Gustavo | Reporting Owner | 12,530 | 2022-03-10 | A |
| HORMATS ROBERT D | Director | 9,597 | 2026-03-10 | A |
| Lieblein Grace | Director | 9,141 | 2026-03-10 | A |
| Kalathur Rajesh | Director | 7,765 | 2026-08-21 | P |
| Tanner Bruce L | Director | 6,940 | 2026-03-10 | A |
| REILLY EUGENE F | Officer | 6,898 | 2026-03-10 | A |
| Frank Kenneth R | Director | 6,188 | 2026-03-10 | A |
| Clarke Teresa Hillary | Director | 5,645.234 | 2026-10-20 | P |
| Chambliss Kelly C | Director | 4,426 | 2026-03-10 | A |
| SHARBUTT DAVID E | Reporting Owner | 2,858 | 2023-03-10 | A |
| Ray Neville R | Director | 2,265 | 2026-03-10 | A |
| Kearns Mark | Officer | 1,177 | 2011-06-01 | M |
Recent Filings
| Date | Owner | Activity | Shares | Price | Owned After |
|---|---|---|---|---|---|
| 2026-10-20 | Clarke Teresa Hillary | Open-market buy | 42.926 | $183.20 | 5,645.234 |
| 2026-10-01 | Blanchett Paul | Grant / award | 16,299 | $0.00 | 16,299 |
| 2026-08-21 | Kalathur Rajesh | Open-market buy | 2,829 | $177.00 | 7,765 |
| 2026-07-29 | Dowling Ruth T | Open-market sale | 1,106 | $174.96 | 27,711 |
| 2026-07-29 | Meyer Robert Joseph | Open-market sale | 5,000 | $178.89 | 21,428 |
| 2026-07-28 | Dowling Ruth T | Open-market sale | 685 | $169.54 | 28,817 |
| 2026-07-13 | Clarke Teresa Hillary | Open-market buy | 46.448 | $167.52 | 5,602.308 |
| 2026-06-01 | Meyer Robert Joseph | Tax withholding | 153 | $187.53 | 26,286 |
| 2026-05-28 | REEVE PAMELA D A | Gift | 810 | $0.00 | 21,089 |
| 2026-04-29 | Dowling Ruth T | Open-market sale | 416 | $177.54 | 29,461 |
| 2026-04-28 | Clarke Teresa Hillary | Open-market buy | 43.5 | $177.08 | 5,555.86 |
| 2026-04-28 | Dowling Ruth T | Open-market sale | 556 | $178.48 | 29,877 |
| 2026-03-11 | Vondran Steven O | Tax withholding | 2,158 | $182.85 | 108,902 |
| 2026-03-11 | Noel Eugene M | Tax withholding | 719 | $182.85 | 34,542 |
| 2026-03-11 | Dowling Ruth T | Tax withholding | 863 | $182.85 | 30,433 |
| 2026-03-11 | Meyer Robert Joseph | Tax withholding | 684 | $182.85 | 26,439 |
| 2026-03-11 | Smith Rodney M | Tax withholding | 1,295 | $182.85 | 92,542 |
| 2026-03-11 | Font Juan | Tax withholding | 928 | $182.85 | 28,352 |
| 2026-03-11 | Rossi Richard C | Tax withholding | 684 | $182.85 | 17,518 |
| 2026-03-10 | Frank Kenneth R | Grant / award | 1,209 | $0.00 | 6,188 |
| 2026-03-10 | Lieblein Grace | Grant / award | 1,209 | $0.00 | 9,141 |
| 2026-03-10 | Tanner Bruce L | Grant / award | 1,209 | $0.00 | 6,940 |
| 2026-03-10 | REILLY EUGENE F | Grant / award | 1,209 | $0.00 | 6,898 |
| 2026-03-10 | Ray Neville R | Grant / award | 1,209 | $0.00 | 2,265 |
| 2026-03-10 | REEVE PAMELA D A | Grant / award | 1,209 | $0.00 | 21,899 |
| 2026-03-10 | Clarke Teresa Hillary | Grant / award | 1,209 | $0.00 | 5,307 |
| 2026-03-10 | HORMATS ROBERT D | Grant / award | 1,209 | $0.00 | 9,597 |
| 2026-03-10 | Kalathur Rajesh | Open-market buy | 2,671 | $185.30 | 4,936 |
| 2026-03-10 | Kalathur Rajesh | Grant / award | 1,209 | $0.00 | 2,265 |
| 2026-03-10 | MACNAB CRAIG | Grant / award | 1,209 | $0.00 | 15,315 |
| 2026-03-10 | Chambliss Kelly C | Grant / award | 1,209 | $0.00 | 4,426 |
| 2026-03-10 | Vondran Steven O | Tax withholding | 15,269 | $186.12 | 111,060 |
| 2026-03-10 | Vondran Steven O | Grant / award | 20,955 | $0.00 | 126,329 |
| 2026-03-10 | Noel Eugene M | Tax withholding | 2,498 | $186.12 | 35,261 |
| 2026-03-10 | Noel Eugene M | Grant / award | 8,167 | $0.00 | 37,759 |
| 2026-03-10 | Dowling Ruth T | Tax withholding | 6,629 | $186.12 | 31,296 |
| 2026-03-10 | Dowling Ruth T | Grant / award | 6,878 | $0.00 | 37,925 |
| 2026-03-10 | Meyer Robert Joseph | Tax withholding | 1,368 | $186.12 | 27,123 |
| 2026-03-10 | Meyer Robert Joseph | Grant / award | 4,030 | $0.00 | 28,491 |
| 2026-03-10 | Smith Rodney M | Tax withholding | 12,433 | $186.12 | 93,837 |
Source: SEC EDGAR Form 4 filings. For informational purposes only — not investment advice.