AMERICAN TOWER CORP /MA/ - AMT
All tracked SEC files for this issuer. Showing up to 200 latest records.
Need parsed ownership details (13D/13G with shares/percent)?
Open ownership details
Form 4 = insider transactions report. Form 144 = notice of proposed sale (not a completed trade confirmation).
Files summary
Total files loaded: 22
Latest filed: Sep 18, 2026
| Form | Count |
|---|---|
| 8-K | 11 |
| 4 | 7 |
| 144 | 2 |
| SCHEDULE 13G | 2 |
Latest files
| Filed | Form | Report period | Accession | SEC |
|---|---|---|---|---|
| Sep 18, 2026 | 8-K | Sep 17, 2026 | 0001053507-26-000145 | View |
| Sep 14, 2026 | 8-K | Sep 14, 2026 | 0001193125-26-390605 | View |
| Sep 09, 2026 | 8-K | Sep 09, 2026 | 0001053507-26-000141 | View |
| Aug 25, 2026 | 4 | Aug 21, 2026 | 0001053507-26-000139 | View |
| Jul 31, 2026 | 4 | Jul 29, 2026 | 0001053507-26-000137 | View |
| Jul 30, 2026 | 4 | Jul 28, 2026 | 0001053507-26-000135 | View |
| Jul 29, 2026 | 144 | — | 0001950047-26-007402 | View |
| Jul 28, 2026 | 144 | — | 0001950047-26-007366 | View |
| Jul 28, 2026 | 8-K | Jul 28, 2026 | 0001053507-26-000131 | View |
| Jun 04, 2026 | 8-K | Jun 02, 2026 | 0001053507-26-000127 | View |
| Jun 03, 2026 | 4 | Jun 01, 2026 | 0001053507-26-000125 | View |
| Jun 02, 2026 | 8-K | Jun 02, 2026 | 0001053507-26-000123 | View |
| Jun 01, 2026 | 4 | May 28, 2026 | 0001053507-26-000121 | View |
| May 27, 2026 | 8-K | May 27, 2026 | 0001193125-26-240535 | View |
| May 21, 2026 | 8-K | May 20, 2026 | 0001053507-26-000116 | View |
| May 20, 2026 | 4 | May 20, 2026 | 0001053507-26-000113 | View |
| May 19, 2026 | 8-K | May 19, 2026 | 0001053507-26-000111 | View |
| May 07, 2026 | 8-K | May 07, 2026 | 0001053507-26-000108 | View |
| Apr 30, 2026 | 4 | Apr 28, 2026 | 0001053507-26-000105 | View |
| Apr 29, 2026 | SCHEDULE 13G | — | 0002100119-26-000148 | View |
| Apr 28, 2026 | SCHEDULE 13G | — | 0002100121-26-000094 | View |
| Apr 28, 2026 | 8-K | Apr 28, 2026 | 0001053507-26-000094 | View |