American Tower AMT SEC Filings

NYSE AMT
$177.60 -5.96 (-3.25%)
As of: Oct 21, 2026 · 3:59 PM EDT
EDGAR Disclosures

SEC Filings

Source SEC EDGAR

Every SEC filing American Tower Corp /Ma/ (AMT) has made, as reported on EDGAR — annual and quarterly reports, current reports, insider transactions and ownership disclosures. Filter by form group, form type or period, and open any filing or its index directly.

Form Type
# Form Type Form Group Accession Date Filing Index
14Insider Transaction0001053507-26-000149Oct 5, 2026 12:07 AM
23Insider Transaction0001053507-26-000147Sep 23, 2026 8:12 PM
38-KCurrent Report0001053507-26-000145Sep 18, 2026 12:50 PM
48-KCurrent Report0001193125-26-390605Sep 14, 2026 8:16 PM
5424B2Prospectus0001193125-26-387901Sep 10, 2026 8:15 PM
68-KCurrent Report0001053507-26-000141Sep 9, 2026 9:29 PM
7FWPOthers0001193125-26-386613Sep 9, 2026 9:10 PM
8424B5Prospectus0001193125-26-385967Sep 9, 2026 12:58 PM
94Insider Transaction0001053507-26-000139Aug 25, 2026 8:23 PM
104Insider Transaction0001053507-26-000137Jul 31, 2026 8:08 PM
114Insider Transaction0001053507-26-000135Jul 30, 2026 8:11 PM
12144Insider Transaction0001950047-26-007402Jul 29, 2026 8:19 PM
13144Insider Transaction0001950047-26-007366Jul 28, 2026 8:28 PM
1410-QQuarterly & Annual Report0001053507-26-000133Jul 28, 2026 8:07 PM
158-KCurrent Report0001053507-26-000131Jul 28, 2026 11:05 AM
16CERTOthers0000876661-26-000508Jun 8, 2026 1:08 PM
178-KCurrent Report0001053507-26-000127Jun 4, 2026 8:39 PM
184Insider Transaction0001053507-26-000125Jun 3, 2026 8:17 PM
198-KCurrent Report0001053507-26-000123Jun 2, 2026 8:18 PM
204Insider Transaction0001053507-26-000121Jun 1, 2026 8:28 PM
218-A12BOthers0001053507-26-000118May 27, 2026 8:13 AM-
228-KCurrent Report0001193125-26-240535May 27, 2026 8:00 AM-
23S-8Prospectus0001193125-26-239419May 26, 2026 4:29 PM-
248-KCurrent Report0001053507-26-000116May 21, 2026 8:17 PM
25424B2Prospectus0001193125-26-232586May 20, 2026 8:11 PM
264Insider Transaction0001053507-26-000113May 20, 2026 8:09 PM
278-KCurrent Report0001053507-26-000111May 19, 2026 8:14 PM
28FWPOthers0001193125-26-230766May 19, 2026 8:10 PM
29424B5Prospectus0001193125-26-229552May 19, 2026 10:02 AM
308-KCurrent Report0001053507-26-000108May 7, 2026 8:38 PM
318-KCurrent Report0001053507-26-000108May 7, 2026 8:38 PM
328-KCurrent Report0001053507-26-000108May 7, 2026 8:38 PM
334Insider Transaction0001053507-26-000105Apr 30, 2026 4:16 PM
344Insider Transaction0001053507-26-000105Apr 30, 2026 4:16 PM
354Insider Transaction0001053507-26-000105Apr 30, 2026 4:16 PM
363Insider Transaction0001053507-26-000103Apr 30, 2026 4:12 PM
373Insider Transaction0001053507-26-000103Apr 30, 2026 4:12 PM
383Insider Transaction0001053507-26-000103Apr 30, 2026 4:12 PM
39SCHEDULE 13GBeneficial Ownership Report0002100119-26-000148Apr 29, 2026 8:41 PM
40DEFA14AOthers0001053507-26-000101Apr 28, 2026 8:13 PM
4110-QQuarterly & Annual Report0001053507-26-000099Apr 28, 2026 8:11 PM
42SCHEDULE 13GBeneficial Ownership Report0002100121-26-000094Apr 28, 2026 8:06 PM
438-KCurrent Report0001053507-26-000094Apr 28, 2026 11:04 AM
44ARSOthers0001193125-26-146429Apr 8, 2026 12:50 PM
45DEFA14AOthers0001053507-26-000090Apr 8, 2026 12:35 PM
46DEF 14AOthers0001053507-26-000088Apr 8, 2026 12:32 PM
47SCHEDULE 13GBeneficial Ownership Report0000102909-26-000653Mar 26, 2026 7:44 PM
484Insider Transaction0001053507-26-000082Mar 12, 2026 8:44 PM
494Insider Transaction0001053507-26-000082Mar 12, 2026 8:44 PM
504Insider Transaction0001053507-26-000082Mar 12, 2026 8:44 PM
...

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