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: 51
Latest filed: Mar 26, 2026
| Form | Count |
|---|---|
| 4 | 31 |
| 8-K | 11 |
| 144 | 7 |
| SCHEDULE 13G/A | 1 |
| SCHEDULE 13D/A | 1 |
Latest files
| Filed | Form | Report period | Accession | SEC |
|---|---|---|---|---|
| Mar 26, 2026 | SCHEDULE 13G/A | — | 0000102909-26-000653 | View |
| Mar 12, 2026 | 4 | Mar 10, 2026 | 0001053507-26-000050 | View |
| Mar 12, 2026 | 4 | Mar 10, 2026 | 0001053507-26-000052 | View |
| Mar 12, 2026 | 4 | Mar 10, 2026 | 0001053507-26-000055 | View |
| Mar 12, 2026 | 4 | Mar 10, 2026 | 0001053507-26-000057 | View |
| Mar 12, 2026 | 4 | Mar 10, 2026 | 0001053507-26-000058 | View |
| Mar 12, 2026 | 4 | Mar 10, 2026 | 0001053507-26-000059 | View |
| Mar 12, 2026 | 4 | Mar 10, 2026 | 0001053507-26-000061 | View |
| Mar 12, 2026 | 4 | Mar 10, 2026 | 0001053507-26-000062 | View |
| Mar 12, 2026 | 4 | Mar 10, 2026 | 0001053507-26-000064 | View |
| Mar 12, 2026 | 4 | Mar 10, 2026 | 0001053507-26-000066 | View |
| Mar 12, 2026 | 4 | Mar 10, 2026 | 0001053507-26-000068 | View |
| Mar 12, 2026 | 4 | Mar 10, 2026 | 0001053507-26-000070 | View |
| Mar 12, 2026 | 4 | Mar 10, 2026 | 0001053507-26-000072 | View |
| Mar 12, 2026 | 4 | Mar 10, 2026 | 0001053507-26-000074 | View |
| Mar 12, 2026 | 4 | Mar 10, 2026 | 0001053507-26-000076 | View |
| Mar 12, 2026 | 4 | Mar 10, 2026 | 0001053507-26-000078 | View |
| Mar 12, 2026 | 4 | Mar 10, 2026 | 0001053507-26-000080 | View |
| Mar 12, 2026 | 4 | Mar 10, 2026 | 0001053507-26-000082 | View |
| Mar 10, 2026 | 8-K | Mar 06, 2026 | 0001053507-26-000048 | View |
| Mar 06, 2026 | 4 | Mar 04, 2026 | 0001053507-26-000043 | View |
| Mar 06, 2026 | 4 | Mar 04, 2026 | 0001053507-26-000045 | View |
| Mar 05, 2026 | 8-K | Mar 05, 2026 | 0001053507-26-000041 | View |
| Mar 04, 2026 | 144 | — | 0001950047-26-002151 | View |
| Mar 04, 2026 | 4 | Mar 02, 2026 | 0002000070-26-000002 | View |
| Mar 03, 2026 | 4 | Feb 27, 2026 | 0001363889-26-000002 | View |
| Mar 03, 2026 | 4 | Feb 27, 2026 | 0001960785-26-000004 | View |
| Mar 02, 2026 | 144 | — | 0001950047-26-001969 | View |
| Feb 27, 2026 | 4 | Feb 25, 2026 | 0001749304-26-000002 | View |
| Feb 27, 2026 | 4 | Feb 25, 2026 | 0001807541-26-000004 | View |
| Feb 27, 2026 | 4 | Feb 25, 2026 | 0001960785-26-000002 | View |
| Feb 27, 2026 | 8-K | Feb 25, 2026 | 0001053507-26-000038 | View |
| Feb 27, 2026 | 144 | — | 0001950047-26-001886 | View |
| Feb 27, 2026 | 144 | — | 0001950047-26-001914 | View |
| Feb 25, 2026 | 144 | — | 0001969223-26-000235 | View |
| Feb 24, 2026 | 8-K | Feb 24, 2026 | 0001053507-26-000032 | View |
| Feb 19, 2026 | 4 | Feb 17, 2026 | 0001807541-26-000002 | View |
| Feb 17, 2026 | 144 | — | 0001950047-26-001321 | View |
| Jan 29, 2026 | 8-K | Jan 26, 2026 | 0001053507-26-000028 | View |
| Jan 28, 2026 | 8-K | Jan 28, 2026 | 0001053507-26-000026 | View |
| Jan 06, 2026 | 4 | Jan 02, 2026 | 0001754833-26-000002 | View |
| Jan 06, 2026 | 4 | Jan 03, 2026 | 0001733553-26-000002 | View |
| Dec 11, 2025 | SCHEDULE 13D/A | — | 0001193125-25-315968 | View |
| Dec 11, 2025 | 4 | Dec 09, 2025 | 0001193125-25-315966 | View |
| Dec 09, 2025 | 144 | — | 0001193125-25-313217 | View |
| Dec 05, 2025 | 8-K | Dec 05, 2025 | 0001193125-25-309718 | View |
| Dec 04, 2025 | 8-K | Dec 04, 2025 | 0001053507-25-000157 | View |
| Dec 02, 2025 | 8-K | Dec 02, 2025 | 0001053507-25-000155 | View |
| Nov 07, 2025 | 8-K | Nov 05, 2025 | 0001053507-25-000153 | View |
| Nov 04, 2025 | 4 | Oct 31, 2025 | 0001053507-25-000151 | View |
| Oct 28, 2025 | 8-K | Oct 28, 2025 | 0001053507-25-000147 | View |