American Tower Corporation
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American Tower Corporation (AMT) SEC Filings
Browse all American Tower Corporation SEC filings, including Annual reports (10-K), Quarterly reports (10-Q), 8-K, proxy statements (DEF 14A), and insider filings (Form 4). Access official documents by filing date, reporting period, and form type. ...more
American Tower Corporation Reports: Annual 10-K, Quarterly 10-Q & SEC Filings
SEC Filings
Date
2026
10-K
Annual financial results and management updates
8-K
Material company events (earnings, M&A, or leadership changes)
4
Insider ownership (buying, selling) activity
8-K
Material company events (earnings, M&A, or leadership changes)
8-K
Material company events (earnings, M&A, or leadership changes)
4
Insider ownership (buying, selling) activity
4
Insider ownership (buying, selling) activity
2025
SC 13D/A
Updated disclosure of active ownership changes
4
Insider ownership (buying, selling) activity
8-K
Material company events (earnings, M&A, or leadership changes)
8-K
Material company events (earnings, M&A, or leadership changes)
424B2
Prospectus variant for specific offering structures
424B5
Shelf offering prospectus with final pricing terms
8-K
Material company events (earnings, M&A, or leadership changes)
FWP
Free writing prospectus related to a securities offering
8-K
Material company events (earnings, M&A, or leadership changes)
4
Insider ownership (buying, selling) activity
8-K
Material company events (earnings, M&A, or leadership changes)
10-Q
Quarterly financial results and management updates
4
Insider ownership (buying, selling) activity
8-K
Material company events (earnings, M&A, or leadership changes)
4
Insider ownership (buying, selling) activity
8-K
Material company events (earnings, M&A, or leadership changes)
8-K
Material company events (earnings, M&A, or leadership changes)
424B2
Prospectus variant for specific offering structures
424B5
Shelf offering prospectus with final pricing terms
8-K
Material company events (earnings, M&A, or leadership changes)
FWP
Free writing prospectus related to a securities offering
8-K
Material company events (earnings, M&A, or leadership changes)
3
Initial disclosure of insider ownership
8-K
Material company events (earnings, M&A, or leadership changes)
4
Insider ownership (buying, selling) activity
10-Q
Quarterly financial results and management updates
8-K
Material company events (earnings, M&A, or leadership changes)
4
Insider ownership (buying, selling) activity
CERT
Certification of exchange listing or compliance
S-3ASR
Automatic shelf registration for eligible issuers
8-A12B
Registration of securities for listing on a national exchange
8-K
Material company events (earnings, M&A, or leadership changes)
424B2
Prospectus variant for specific offering structures
American Tower Corporation Annual Report (10-K) 2026
Annual Reports / Annual financial results and management updates
Feb 24, 2026
