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 |
|---|---|---|---|---|
| 424B5 | 424B5 | 0001193125-25-304622 | Dec 2, 2025 | — |
| FWP | FWP | 0001193125-25-305390 | Dec 2, 2025 | — |
| 8-K | 8-K | 0001053507-25-000153 | Nov 7, 2025 | Nov 5, 2025 |
| 4 | FORM 4 | 0001053507-25-000151 | Nov 4, 2025 | Oct 31, 2025 |
| 8-K | 8-K | 0001053507-25-000147 | Oct 28, 2025 | — |
| 10-Q | 10-Q | 0001053507-25-000149 | Oct 28, 2025 | Sep 30, 2025 |
| 4 | FORM 4 | 0001053507-25-000144 | Oct 3, 2025 | Oct 1, 2025 |
| 8-K | 8-K | 0001053507-25-000143 | Sep 24, 2025 | Sep 23, 2025 |
| 4 | FORM 4 | 0001053507-25-000141 | Sep 23, 2025 | Sep 19, 2025 |
| 8-K | 8-K | 0001053507-25-000139 | Sep 18, 2025 | Sep 16, 2025 |
| 8-K | 8-K | 0001193125-25-205004 | Sep 16, 2025 | — |
| 424B2 | 424B2 | 0001193125-25-202219 | Sep 12, 2025 | — |
| 424B5 | 424B5 | 0001193125-25-200816 | Sep 11, 2025 | — |
| FWP | FWP | 0001193125-25-201400 | Sep 11, 2025 | — |
| 8-K | 8-K | 0001053507-25-000132 | Sep 11, 2025 | — |
| 8-K | 8-K | 0001053507-25-000129 | Sep 5, 2025 | Sep 3, 2025 |
| 3 | FORM 3 | 0001053507-25-000127 | Aug 29, 2025 | Aug 22, 2025 |
| 8-K | 8-K | 0001053507-25-000124 | Aug 25, 2025 | Aug 22, 2025 |
| 4 | FORM 4 | 0001053507-25-000122 | Aug 1, 2025 | Jul 31, 2025 |
| 144 | — | 0001950047-25-005297 | Jul 31, 2025 | — |
| 10-Q | 10-Q | 0001053507-25-000120 | Jul 29, 2025 | Jun 30, 2025 |
| 8-K | 8-K | 0001053507-25-000117 | Jul 29, 2025 | — |
| 4 | FORM 4 | 0001053507-25-000114 | Jun 3, 2025 | Jun 1, 2025 |
| CERT | NYSE CERTIFICATION | 0000876661-25-000421 | Jun 2, 2025 | — |
| S-3ASR | S-3ASR | 0001193125-25-132847 | Jun 2, 2025 | — |
| 8-K | FORM 8-K | 0001193125-25-131504 | May 30, 2025 | — |
| 8-A12B | 8-A12B | 0001053507-25-000111 | May 30, 2025 | — |
| 424B2 | 424B2 | 0001193125-25-125067 | May 22, 2025 | — |
| 8-K | 8-K | 0001053507-25-000109 | May 21, 2025 | — |
| 424B5 | 424B5 | 0001193125-25-123578 | May 21, 2025 | — |
| FWP | FWP | 0001193125-25-123989 | May 21, 2025 | — |
| 4 | FORM 4 | 0001053507-25-000107 | May 16, 2025 | May 14, 2025 |
| 8-K | 8-K | 0001053507-25-000105 | May 15, 2025 | May 14, 2025 |
| 8-K | 8-K | 0001053507-25-000100 | Apr 29, 2025 | — |
| 10-Q | 10-Q | 0001053507-25-000102 | Apr 29, 2025 | Mar 31, 2025 |
| 25-NSE | — | 0001143362-25-000103 | Apr 4, 2025 | — |
| DEFA14A | DEFA14A | 0001053507-25-000094 | Apr 2, 2025 | — |
| ARS | ARS | 0001193125-25-070910 | Apr 2, 2025 | Dec 31, 2024 |
| 4 | FORM 4 | 0001053507-25-000096 | Apr 2, 2025 | Mar 31, 2025 |
| DEF 14A | DEF 14A | 0001053507-25-000092 | Apr 2, 2025 | May 14, 2025 |
| 8-K | 8-K | 0001053507-25-000087 | Mar 20, 2025 | Mar 17, 2025 |
| 4 | FORM 4 | 0001053507-25-000084 | Mar 19, 2025 | Mar 17, 2025 |
| 144 | — | 0001972362-25-000318 | Mar 17, 2025 | — |
| 8-K | FORM 8-K | 0001193125-25-054806 | Mar 14, 2025 | — |
| 4 | FORM 4 | 0001053507-25-000066 | Mar 12, 2025 | Mar 10, 2025 |
| 4 | FORM 4 | 0001053507-25-000068 | Mar 12, 2025 | Mar 10, 2025 |
| 4 | FORM 4 | 0001053507-25-000070 | Mar 12, 2025 | Mar 10, 2025 |
| 4 | FORM 4 | 0001053507-25-000072 | Mar 12, 2025 | Mar 10, 2025 |
| 4 | FORM 4 | 0001053507-25-000074 | Mar 12, 2025 | Mar 10, 2025 |
| 4 | FORM 4 | 0001053507-25-000076 | Mar 12, 2025 | Mar 10, 2025 |