American Tower AMT SEC Filings

NYSE AMT
$190.33 +1.13 (+0.60%)
At close: Nov 10, 2026 · 4:00 PM EST
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
1424B2Prospectus0001193125-26-455424Nov 10, 2026 4:05 PM
28-KCurrent Report0001053507-26-000163Nov 9, 2026 9:49 PM
3FWPOthers0001193125-26-453746Nov 9, 2026 9:45 PM
4424B5Prospectus0001193125-26-452770Nov 9, 2026 2:03 PM
54Insider Transaction0001053507-26-000161Nov 3, 2026 9:07 PM
64Insider Transaction0001053507-26-000159Oct 30, 2026 8:46 PM
7144Insider Transaction0001950047-26-010510Oct 30, 2026 8:23 PM
810-QQuarterly & Annual Report0001053507-26-000157Oct 27, 2026 8:08 PM
98-KCurrent Report0001053507-26-000154Oct 27, 2026 11:03 AM
104Insider Transaction0001053507-26-000151Oct 22, 2026 1:42 AM
114Insider Transaction0001053507-26-000149Oct 5, 2026 12:07 AM
123Insider Transaction0001053507-26-000147Sep 23, 2026 8:12 PM
138-KCurrent Report0001053507-26-000145Sep 18, 2026 12:50 PM
148-KCurrent Report0001193125-26-390605Sep 14, 2026 8:16 PM
15424B2Prospectus0001193125-26-387901Sep 10, 2026 8:15 PM
168-KCurrent Report0001053507-26-000141Sep 9, 2026 9:29 PM
17FWPOthers0001193125-26-386613Sep 9, 2026 9:10 PM
18424B5Prospectus0001193125-26-385967Sep 9, 2026 12:58 PM
194Insider Transaction0001053507-26-000139Aug 25, 2026 8:23 PM
204Insider Transaction0001053507-26-000137Jul 31, 2026 8:08 PM
214Insider Transaction0001053507-26-000135Jul 30, 2026 8:11 PM
22144Insider Transaction0001950047-26-007402Jul 29, 2026 8:19 PM
23144Insider Transaction0001950047-26-007366Jul 28, 2026 8:28 PM
2410-QQuarterly & Annual Report0001053507-26-000133Jul 28, 2026 8:07 PM
258-KCurrent Report0001053507-26-000131Jul 28, 2026 11:05 AM
26CERTOthers0000876661-26-000508Jun 8, 2026 1:08 PM
278-KCurrent Report0001053507-26-000127Jun 4, 2026 8:39 PM
284Insider Transaction0001053507-26-000125Jun 3, 2026 8:17 PM
298-KCurrent Report0001053507-26-000123Jun 2, 2026 8:18 PM
304Insider Transaction0001053507-26-000121Jun 1, 2026 8:28 PM
318-A12BOthers0001053507-26-000118May 27, 2026 12:13 PM
328-KCurrent Report0001193125-26-240535May 27, 2026 12:00 PM
33S-8Prospectus0001193125-26-239419May 26, 2026 8:29 PM
3425-NSEOthers0000876661-26-000446May 22, 2026 1:44 PM
358-KCurrent Report0001053507-26-000116May 21, 2026 8:17 PM
36424B2Prospectus0001193125-26-232586May 20, 2026 8:11 PM
374Insider Transaction0001053507-26-000113May 20, 2026 8:09 PM
388-KCurrent Report0001053507-26-000111May 19, 2026 8:14 PM
39FWPOthers0001193125-26-230766May 19, 2026 8:10 PM
40424B5Prospectus0001193125-26-229552May 19, 2026 10:02 AM
418-KCurrent Report0001053507-26-000108May 7, 2026 8:38 PM
424Insider Transaction0001053507-26-000105Apr 30, 2026 8:16 PM
433Insider Transaction0001053507-26-000103Apr 30, 2026 8:12 PM
44SCHEDULE 13GBeneficial Ownership Report0002100119-26-000148Apr 29, 2026 8:41 PM
45DEFA14AOthers0001053507-26-000101Apr 28, 2026 8:13 PM
4610-QQuarterly & Annual Report0001053507-26-000099Apr 28, 2026 8:11 PM
47SCHEDULE 13GBeneficial Ownership Report0002100121-26-000094Apr 28, 2026 8:06 PM
488-KCurrent Report0001053507-26-000094Apr 28, 2026 11:04 AM
49ARSOthers0001193125-26-146429Apr 8, 2026 12:50 PM
50DEFA14AOthers0001053507-26-000090Apr 8, 2026 12:35 PM
...

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