American Tower Corp /MA/ SEC filings AMT
American Tower Corp /MA/ has 1,000 filings in SEC EDGAR's recent list, going back to May 31, 2017. Its latest annual report, Form ARS, was filed on Apr 8, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Oct 27, 2026, covering the quarter ended Sep 30, 2026. The most recent current report (Form 8-K) was filed on Oct 27, 2026 (results of operations). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| 10-Q | Quarterly report | Oct 27, 2026 | Sep 30, 2026 |
| 10-Q | Quarterly report | Jul 28, 2026 | Jun 30, 2026 |
| 10-Q | Quarterly report | Apr 28, 2026 | Mar 31, 2026 |
| 10-Q | Quarterly report | Oct 28, 2025 | Sep 30, 2025 |
| 10-Q | Quarterly report | Jul 29, 2025 | Jun 30, 2025 |
| 10-Q | Quarterly report | Apr 29, 2025 | Mar 31, 2025 |
| 10-Q | Quarterly report | Oct 29, 2024 | Sep 30, 2024 |
| 10-Q | Quarterly report | Jul 30, 2024 | Jun 30, 2024 |
| 10-Q | Quarterly report | Apr 30, 2024 | Mar 31, 2024 |
| 10-Q | Quarterly report | Oct 26, 2023 | Sep 30, 2023 |
| 10-Q | Quarterly report | Jul 27, 2023 | Jun 30, 2023 |
| 10-Q | Quarterly report | Apr 26, 2023 | Mar 31, 2023 |
| 10-Q | Quarterly report | Oct 27, 2022 | Sep 30, 2022 |
| 10-Q | Quarterly report | Jul 28, 2022 | Jun 30, 2022 |
| 10-Q | Quarterly report | Apr 27, 2022 | Mar 31, 2022 |
| 10-Q | Quarterly report | Oct 28, 2021 | Sep 30, 2021 |
| 10-Q | Quarterly report | Jul 29, 2021 | Jun 30, 2021 |
| 10-Q | Quarterly report | Apr 29, 2021 | Mar 31, 2021 |
| 10-Q | Quarterly report | Oct 29, 2020 | Sep 30, 2020 |
| 10-Q | Quarterly report | Jul 30, 2020 | Jun 30, 2020 |
| 10-Q | Quarterly report | Apr 29, 2020 | Mar 31, 2020 |
| 10-Q | Quarterly report | Oct 31, 2019 | Sep 30, 2019 |
| 10-Q | Quarterly report | Jul 31, 2019 | Jun 30, 2019 |
| 10-Q | Quarterly report | May 3, 2019 | Mar 31, 2019 |
| 10-Q | Quarterly report | Oct 30, 2018 | Sep 30, 2018 |
| 10-Q | Quarterly report | Jul 31, 2018 | Jun 30, 2018 |
| 10-Q | Quarterly report | May 2, 2018 | Mar 31, 2018 |
| 10-Q | Quarterly report | Oct 31, 2017 | Sep 30, 2017 |
| 10-Q | Quarterly report | Jul 27, 2017 | Jun 30, 2017 |
Showing 29 filings. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.
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Company profile
- Industry
- Real Estate Investment Trusts (SIC 6798)
- Listed as
- AMT (NYSE)
- Fiscal year ends
- December 31
- Incorporated in
- DE
- Headquarters
- Boston, MA
- SEC filer status
- Large accelerated filer
- SEC CIK
- 1053507
- Former names
- AMERICAN TOWER SYSTEMS CORP (until May 8, 1998)
Other Real Estate Investment Trusts companies
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- Prologis, Inc. PLD
- Equinix Inc EQIX
- Simon Property Group Inc. SPG
- Digital Realty Trust, Inc. DLR
- Public Storage PSA
- Realty Income Corp O
- Vivmark Residential VMRK
Source: SEC EDGAR filings. This is company-reported data, not investment advice.