AMERICAN TOWER CORP /MA/ — 8-K Filings
557 8-K filings on record
This page lists all 8-K filings submitted to the SEC by AMERICAN TOWER CORP /MA/ (AMT), sorted by most recent first. Each row links to the full filing on EdgarLookup. AMERICAN TOWER CORP /MA/ has filed 557 8-K documents with the SEC since 2017. To view all SEC filings by AMERICAN TOWER CORP /MA/, see the full filings list.
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 |
|---|---|---|---|---|
| 8-K | 8-K | 0001053507-26-000048 | Mar 10, 2026 | Mar 6, 2026 |
| 8-K | 8-K | 0001053507-26-000041 | Mar 5, 2026 | — |
| 8-K | 8-K | 0001053507-26-000038 | Feb 27, 2026 | Feb 25, 2026 |
| 8-K | 8-K | 0001053507-26-000032 | Feb 24, 2026 | — |
| 8-K | 8-K | 0001053507-26-000028 | Jan 29, 2026 | Jan 26, 2026 |
| 8-K | 8-K | 0001053507-26-000026 | Jan 28, 2026 | — |
| 8-K | 8-K | 0001193125-25-309718 | Dec 5, 2025 | — |
| 8-K | 8-K | 0001053507-25-000157 | Dec 4, 2025 | — |
| 8-K | 8-K | 0001053507-25-000155 | Dec 2, 2025 | — |
| 8-K | 8-K | 0001053507-25-000153 | Nov 7, 2025 | Nov 5, 2025 |
| 8-K | 8-K | 0001053507-25-000147 | Oct 28, 2025 | — |
| 8-K | 8-K | 0001053507-25-000143 | Sep 24, 2025 | Sep 23, 2025 |
| 8-K | 8-K | 0001053507-25-000139 | Sep 18, 2025 | Sep 16, 2025 |
| 8-K | 8-K | 0001193125-25-205004 | Sep 16, 2025 | — |
| 8-K | 8-K | 0001053507-25-000132 | Sep 11, 2025 | — |
| 8-K | 8-K | 0001053507-25-000129 | Sep 5, 2025 | Sep 3, 2025 |
| 8-K | 8-K | 0001053507-25-000124 | Aug 25, 2025 | Aug 22, 2025 |
| 8-K | 8-K | 0001053507-25-000117 | Jul 29, 2025 | — |
| 8-K | FORM 8-K | 0001193125-25-131504 | May 30, 2025 | — |
| 8-K | 8-K | 0001053507-25-000109 | May 21, 2025 | — |
| 8-K | 8-K | 0001053507-25-000105 | May 15, 2025 | May 14, 2025 |
| 8-K | 8-K | 0001053507-25-000100 | Apr 29, 2025 | — |
| 8-K | 8-K | 0001053507-25-000087 | Mar 20, 2025 | Mar 17, 2025 |
| 8-K | FORM 8-K | 0001193125-25-054806 | Mar 14, 2025 | — |
| 8-K | 8-K | 0001053507-25-000044 | Mar 11, 2025 | — |
| 8-K | 8-K | 0001053507-25-000042 | Mar 6, 2025 | — |
| 8-K | 8-K | 0001053507-25-000039 | Mar 5, 2025 | Feb 27, 2025 |
| 8-K | 8-K | 0001053507-25-000022 | Feb 25, 2025 | — |
| 8-K | 8-K | 0001053507-25-000012 | Feb 5, 2025 | — |
| 8-K | 8-K | 0001053507-25-000010 | Jan 28, 2025 | — |
| 8-K | 8-K | 0001053507-25-000002 | Jan 7, 2025 | Jan 2, 2025 |
| 8-K | 8-K | 0001053507-24-000140 | Dec 5, 2024 | — |
| 8-K | 8-K | 0001193125-24-263434 | Nov 21, 2024 | — |
| 8-K | 8-K | 0001053507-24-000138 | Nov 19, 2024 | Nov 18, 2024 |
| 8-K | 8-K | 0001053507-24-000132 | Oct 31, 2024 | Oct 28, 2024 |
| 8-K | 8-K | 0001053507-24-000128 | Oct 29, 2024 | — |
| 8-K | 8-K | 0001053507-24-000121 | Sep 12, 2024 | — |
| 8-K | 8-K | 0001053507-24-000119 | Sep 12, 2024 | — |
| 8-K | 8-K | 0001053507-24-000103 | Jul 30, 2024 | — |
| 8-K | FORM 8-K | 0001193125-24-149168 | May 29, 2024 | — |
| 8-K | 8-K | 0001053507-24-000095 | May 24, 2024 | May 22, 2024 |
| 8-K | 8-K | 0001053507-24-000091 | May 22, 2024 | — |
| 8-K | 8-K | 0001053507-24-000081 | Apr 30, 2024 | — |
| 8-K | 8-K | 0001053507-24-000067 | Mar 14, 2024 | Mar 11, 2024 |
| 8-K | 8-K | 0001193125-24-062192 | Mar 7, 2024 | — |
| 8-K | 8-K | 0001053507-24-000023 | Mar 4, 2024 | — |
| 8-K | 8-K | 0001053507-24-000015 | Mar 1, 2024 | Feb 28, 2024 |
| 8-K | 8-K | 0001053507-24-000009 | Feb 27, 2024 | — |
| 8-K | 8-K | 0001053507-24-000005 | Feb 7, 2024 | Feb 5, 2024 |
| 8-K | 8-K | 0001053507-24-000003 | Jan 5, 2024 | Jan 4, 2024 |