AMERICAN TOWER CORP /MA/ — All Filings
1,004 total filings on record
Public companies registered with the SEC are required to file periodic reports, disclosures, and notices throughout the year. The most important are the 10-K (annual report), 10-Q (quarterly report), and 8-K (material event notice). Use the filters below to narrow by form type.
All
10-K
10-K/A
10-Q
10-Q/A
11-K
144
15-12B
25-NSE
3
3/A
305B2
305B2/A
4
4/A
424A
424B2
424B3
424B4
424B5
424B8
425
5
8-A12B
8-K
8-K/A
ARS
CERT
CERTNYS
CORRESP
CT ORDER
DEF 14A
DEFA14A
DEFM14A
DEFR14A
EFFECT
FWP
NO ACT
NT 10-K
NT 10-Q
POS AM
POSASR
PRE 14A
PRER14A
PX14A6G
RW
S-1
S-1/A
S-1MEF
S-3
S-3/A
S-3ASR
S-3MEF
S-4
S-4/A
S-8
S-8 POS
SC 13D
SC 13D/A
SC 13G
SC 13G/A
SC TO-C
SC TO-I
SC TO-I/A
SC TO-T
SC TO-T/A
SCHEDULE 13D/A
SCHEDULE 13G/A
UPLOAD
| Form | Description | Accession Number | Filed | Period |
|---|---|---|---|---|
| SCHEDULE 13G/A | — | 0000102909-26-000653 | Mar 26, 2026 | — |
| 4 | FORM 4 | 0001053507-26-000082 | Mar 12, 2026 | Mar 10, 2026 |
| 4 | FORM 4 | 0001053507-26-000080 | Mar 12, 2026 | Mar 10, 2026 |
| 4 | FORM 4 | 0001053507-26-000078 | Mar 12, 2026 | Mar 10, 2026 |
| 4 | FORM 4 | 0001053507-26-000076 | Mar 12, 2026 | Mar 10, 2026 |
| 4 | FORM 4 | 0001053507-26-000074 | Mar 12, 2026 | Mar 10, 2026 |
| 4 | FORM 4 | 0001053507-26-000072 | Mar 12, 2026 | Mar 10, 2026 |
| 4 | FORM 4 | 0001053507-26-000070 | Mar 12, 2026 | Mar 10, 2026 |
| 4 | FORM 4 | 0001053507-26-000068 | Mar 12, 2026 | Mar 10, 2026 |
| 4 | FORM 4 | 0001053507-26-000066 | Mar 12, 2026 | Mar 10, 2026 |
| 4 | FORM 4 | 0001053507-26-000064 | Mar 12, 2026 | Mar 10, 2026 |
| 4 | FORM 4 | 0001053507-26-000062 | Mar 12, 2026 | Mar 10, 2026 |
| 4 | FORM 4 | 0001053507-26-000061 | Mar 12, 2026 | Mar 10, 2026 |
| 4 | FORM 4 | 0001053507-26-000059 | Mar 12, 2026 | Mar 10, 2026 |
| 4 | FORM 4 | 0001053507-26-000058 | Mar 12, 2026 | Mar 10, 2026 |
| 4 | FORM 4 | 0001053507-26-000057 | Mar 12, 2026 | Mar 10, 2026 |
| 4 | FORM 4 | 0001053507-26-000055 | Mar 12, 2026 | Mar 10, 2026 |
| 4 | FORM 4 | 0001053507-26-000052 | Mar 12, 2026 | Mar 10, 2026 |
| 4 | FORM 4 | 0001053507-26-000050 | Mar 12, 2026 | Mar 10, 2026 |
| 8-K | 8-K | 0001053507-26-000048 | Mar 10, 2026 | Mar 6, 2026 |
| 4 | FORM 4 | 0001053507-26-000045 | Mar 6, 2026 | Mar 4, 2026 |
| 4 | FORM 4 | 0001053507-26-000043 | Mar 6, 2026 | Mar 4, 2026 |
| 8-K | 8-K | 0001053507-26-000041 | Mar 5, 2026 | — |
| 4 | FORM 4 | 0002000070-26-000002 | Mar 4, 2026 | Mar 2, 2026 |
| 144 | — | 0001950047-26-002151 | Mar 4, 2026 | — |
| 4 | FORM 4 | 0001363889-26-000002 | Mar 3, 2026 | Feb 27, 2026 |
| 4 | FORM 4 | 0001960785-26-000004 | Mar 3, 2026 | Feb 27, 2026 |
| 144 | — | 0001950047-26-001969 | Mar 2, 2026 | — |
| 144 | — | 0001950047-26-001914 | Feb 27, 2026 | — |
| 144 | — | 0001950047-26-001886 | Feb 27, 2026 | — |
| 8-K | 8-K | 0001053507-26-000038 | Feb 27, 2026 | Feb 25, 2026 |
| 4 | FORM 4 | 0001960785-26-000002 | Feb 27, 2026 | Feb 25, 2026 |
| 4 | FORM 4 | 0001807541-26-000004 | Feb 27, 2026 | Feb 25, 2026 |
| 4 | FORM 4 | 0001749304-26-000002 | Feb 27, 2026 | Feb 25, 2026 |
| 144 | — | 0001969223-26-000235 | Feb 25, 2026 | — |
| 10-K | 10-K | 0001053507-26-000035 | Feb 24, 2026 | Dec 31, 2025 |
| 8-K | 8-K | 0001053507-26-000032 | Feb 24, 2026 | — |
| 4 | FORM 4 | 0001807541-26-000002 | Feb 19, 2026 | Feb 17, 2026 |
| 144 | — | 0001950047-26-001321 | Feb 17, 2026 | — |
| 8-K | 8-K | 0001053507-26-000028 | Jan 29, 2026 | Jan 26, 2026 |
| 8-K | 8-K | 0001053507-26-000026 | Jan 28, 2026 | — |
| 4 | FORM 4 | 0001733553-26-000002 | Jan 6, 2026 | Jan 3, 2026 |
| 4 | FORM 4 | 0001754833-26-000002 | Jan 6, 2026 | Jan 2, 2026 |
| 4 | 4 | 0001193125-25-315966 | Dec 11, 2025 | Dec 9, 2025 |
| SCHEDULE 13D/A | — | 0001193125-25-315968 | Dec 11, 2025 | — |
| 144 | — | 0001193125-25-313217 | Dec 9, 2025 | — |
| 8-K | 8-K | 0001193125-25-309718 | Dec 5, 2025 | — |
| 8-K | 8-K | 0001053507-25-000157 | Dec 4, 2025 | — |
| 424B2 | 424B2 | 0001193125-25-306736 | Dec 3, 2025 | — |
| 8-K | 8-K | 0001053507-25-000155 | Dec 2, 2025 | — |