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American Tower Corporation — SEC Filings — 10-K, 10-Q, 8-K

AMT
NYSEReal EstateREIT - SpecialtyCIK 0001053507americantower.comAbout AMT
Last close · Oct 16, 2026185.27+3.91 (+2.16%)
Market cap$86.3B

What the company itself has filed with the SEC: annual and quarterly reports, 8-K current reports with the earnings press release, proxy statements and securities offerings. The originals, each linked to EDGAR.

SEC filings

96 since 2023-10-18
  1. 2026-09-188-K
    5.02Departure/Election of Directors or Officers8.01Other Events9.01Financial Statements and Exhibits
    Filing ↗
  2. 2026-09-148-K
    1.01Entry into a Material Agreement2.03Creation of a Direct Financial Obligation9.01Financial Statements and Exhibits
    Filing ↗
  3. 2026-09-09424B5
    Prospectus supplement
    Filing ↗
  4. 2026-09-098-K
    8.01Other Events9.01Financial Statements and Exhibits
    Filing ↗
  5. 2026-07-2810-Q
    Quarterly report · period ended 2026-06-30
    Filing ↗
  6. 2026-07-288-K
    2.02Results of Operations (Earnings)9.01Financial Statements and Exhibits
    Press release ↗Filing ↗
  7. 2026-06-048-K
    8.01Other Events
    Filing ↗
  8. 2026-06-028-K
    8.01Other Events
    Filing ↗
  9. 2026-05-278-K
    1.01Entry into a Material Agreement2.03Creation of a Direct Financial Obligation9.01Financial Statements and Exhibits
    Filing ↗
  10. 2026-05-26S-8
    Employee stock plan registration
    Filing ↗
  11. 2026-05-218-K
    5.02Departure/Election of Directors or Officers5.07Submission of Matters to a Shareholder Vote8.01Other Events9.01Financial Statements and Exhibits
    Filing ↗
  12. 2026-05-19424B5
    Prospectus supplement
    Filing ↗
  13. 2026-05-198-K
    8.01Other Events9.01Financial Statements and Exhibits
    Filing ↗
  14. 2026-05-078-K
    1.01Entry into a Material Agreement2.03Creation of a Direct Financial Obligation
    Filing ↗
  15. 2026-04-28DEFA14A
    Additional proxy materials
    Filing ↗
  16. 2026-04-2810-Q
    Quarterly report · period ended 2026-03-31
    Filing ↗
  17. 2026-04-288-K
    2.02Results of Operations (Earnings)9.01Financial Statements and Exhibits
    Press release ↗Filing ↗
  18. 2026-04-08ARS
    Annual report to shareholders · period ended 2025-12-31
    Filing ↗
  19. 2026-04-08DEFA14A
    Additional proxy materials
    Filing ↗
  20. 2026-04-08DEF 14A
    Proxy statement
    Filing ↗
  21. 2026-03-108-K
    5.02Departure/Election of Directors or Officers
    Filing ↗
  22. 2026-03-058-K
    8.01Other Events9.01Financial Statements and Exhibits
    Filing ↗
  23. 2026-02-278-K
    5.02Departure/Election of Directors or Officers
    Filing ↗
  24. 2026-02-2410-K
    Annual report · period ended 2025-12-31
    Filing ↗
  25. 2026-02-248-K
    2.02Results of Operations (Earnings)9.01Financial Statements and Exhibits
    Press release ↗Filing ↗
  26. 2026-01-298-K
    5.02Departure/Election of Directors or Officers
    Filing ↗
  27. 2026-01-288-K
    8.01Other Events
    Filing ↗
  28. 2025-12-058-K
    1.01Entry into a Material Agreement2.03Creation of a Direct Financial Obligation9.01Financial Statements and Exhibits
    Filing ↗
  29. 2025-12-048-K
    8.01Other Events9.01Financial Statements and Exhibits
    Filing ↗
  30. 2025-12-02424B5
    Prospectus supplement
    Filing ↗
  31. 2025-12-028-K
    8.01Other Events9.01Financial Statements and Exhibits
    Filing ↗
  32. 2025-11-078-K
    5.02Departure/Election of Directors or Officers
    Filing ↗
  33. 2025-10-2810-Q
    Quarterly report · period ended 2025-09-30
    Filing ↗
  34. 2025-10-288-K
    2.02Results of Operations (Earnings)9.01Financial Statements and Exhibits
    Press release ↗Filing ↗
  35. 2025-09-248-K
    7.01Regulation FD Disclosure
    Filing ↗
  36. 2025-09-188-K
    5.02Departure/Election of Directors or Officers8.01Other Events9.01Financial Statements and Exhibits
    Filing ↗
  37. 2025-09-168-K
    1.01Entry into a Material Agreement2.03Creation of a Direct Financial Obligation9.01Financial Statements and Exhibits
    Filing ↗
  38. 2025-09-11424B5
    Prospectus supplement
    Filing ↗
  39. 2025-09-118-K
    8.01Other Events9.01Financial Statements and Exhibits
    Filing ↗
  40. 2025-09-058-K
    7.01Regulation FD Disclosure
    Filing ↗
  41. 2025-08-258-K
    5.02Departure/Election of Directors or Officers9.01Financial Statements and Exhibits
    Filing ↗
  42. 2025-07-2910-Q
    Quarterly report · period ended 2025-06-30
    Filing ↗
  43. 2025-07-298-K
    2.02Results of Operations (Earnings)9.01Financial Statements and Exhibits
    Press release ↗Filing ↗
  44. 2025-06-02S-3ASR
    Shelf registration (automatic)
    Filing ↗
  45. 2025-05-308-K
    1.01Entry into a Material Agreement2.03Creation of a Direct Financial Obligation9.01Financial Statements and Exhibits
    Filing ↗
  46. 2025-05-21424B5
    Prospectus supplement
    Filing ↗
  47. 2025-05-218-K
    8.01Other Events9.01Financial Statements and Exhibits
    Filing ↗
  48. 2025-05-158-K
    5.07Submission of Matters to a Shareholder Vote8.01Other Events9.01Financial Statements and Exhibits
    Filing ↗
  49. 2025-04-2910-Q
    Quarterly report · period ended 2025-03-31
    Filing ↗
  50. 2025-04-298-K
    2.02Results of Operations (Earnings)9.01Financial Statements and Exhibits
    Press release ↗Filing ↗
  51. 2025-04-02ARS
    Annual report to shareholders · period ended 2024-12-31
    Filing ↗
  52. 2025-04-02DEFA14A
    Additional proxy materials
    Filing ↗
  53. 2025-04-02DEF 14A
    Proxy statement
    Filing ↗
  54. 2025-03-208-K
    5.02Departure/Election of Directors or Officers
    Filing ↗
  55. 2025-03-148-K
    1.01Entry into a Material Agreement2.03Creation of a Direct Financial Obligation9.01Financial Statements and Exhibits
    Filing ↗
  56. 2025-03-11424B5
    Prospectus supplement
    Filing ↗
  57. 2025-03-118-K
    8.01Other Events9.01Financial Statements and Exhibits
    Filing ↗
  58. 2025-03-068-K
    8.01Other Events9.01Financial Statements and Exhibits
    Filing ↗
  59. 2025-03-058-K
    5.02Departure/Election of Directors or Officers
    Filing ↗
  60. 2025-02-2510-K
    Annual report · period ended 2024-12-31
    Filing ↗
  61. 2025-02-258-K
    2.02Results of Operations (Earnings)9.01Financial Statements and Exhibits
    Press release ↗Filing ↗
  62. 2025-02-058-K
    5.02Departure/Election of Directors or Officers9.01Financial Statements and Exhibits
    Filing ↗
  63. 2025-01-288-K
    1.01Entry into a Material Agreement2.03Creation of a Direct Financial Obligation
    Filing ↗
  64. 2025-01-078-K
    5.02Departure/Election of Directors or Officers5.03Amendment to Articles/Bylaws9.01Financial Statements and Exhibits
    Filing ↗
  65. 2024-12-058-K
    8.01Other Events9.01Financial Statements and Exhibits
    Filing ↗
  66. 2024-11-218-K
    1.01Entry into a Material Agreement2.03Creation of a Direct Financial Obligation9.01Financial Statements and Exhibits
    Filing ↗
  67. 2024-11-198-K
    8.01Other Events9.01Financial Statements and Exhibits
    Filing ↗
  68. 2024-11-18424B5
    Prospectus supplement
    Filing ↗
  69. 2024-10-318-K
    5.02Departure/Election of Directors or Officers
    Filing ↗
  70. 2024-10-2910-Q
    Quarterly report · period ended 2024-09-30
    Filing ↗
  71. 2024-10-298-K
    2.02Results of Operations (Earnings)9.01Financial Statements and Exhibits
    Press release ↗Filing ↗
  72. 2024-09-128-K
    8.01Other Events9.01Financial Statements and Exhibits
    Filing ↗
  73. 2024-09-128-K
    7.01Regulation FD Disclosure9.01Financial Statements and Exhibits
    Filing ↗
  74. 2024-07-3010-Q
    Quarterly report · period ended 2024-06-30
    Filing ↗
  75. 2024-07-308-K
    2.02Results of Operations (Earnings)9.01Financial Statements and Exhibits
    Press release ↗Filing ↗
  76. 2024-05-298-K
    1.01Entry into a Material Agreement2.03Creation of a Direct Financial Obligation9.01Financial Statements and Exhibits
    Filing ↗
  77. 2024-05-248-K
    5.02Departure/Election of Directors or Officers5.07Submission of Matters to a Shareholder Vote8.01Other Events9.01Financial Statements and Exhibits
    Filing ↗
  78. 2024-05-22424B5
    Prospectus supplement
    Filing ↗
  79. 2024-05-228-K
    8.01Other Events9.01Financial Statements and Exhibits
    Filing ↗
  80. 2024-04-3010-Q
    Quarterly report · period ended 2024-03-31
    Filing ↗
  81. 2024-04-308-K
    2.02Results of Operations (Earnings)9.01Financial Statements and Exhibits
    Press release ↗Filing ↗
  82. 2024-04-10ARS
    Annual report to shareholders · period ended 2023-12-31
    Filing ↗
  83. 2024-04-10DEFA14A
    Additional proxy materials
    Filing ↗
  84. 2024-04-10DEF 14A
    Proxy statement
    Filing ↗
  85. 2024-03-148-K
    5.02Departure/Election of Directors or Officers8.01Other Events9.01Financial Statements and Exhibits
    Filing ↗
  86. 2024-03-078-K
    1.01Entry into a Material Agreement2.03Creation of a Direct Financial Obligation9.01Financial Statements and Exhibits
    Filing ↗
  87. 2024-03-04424B5
    Prospectus supplement
    Filing ↗
  88. 2024-03-048-K
    8.01Other Events9.01Financial Statements and Exhibits
    Filing ↗
  89. 2024-03-018-K
    5.02Departure/Election of Directors or Officers
    Filing ↗
  90. 2024-02-2710-K
    Annual report · period ended 2023-12-31
    Filing ↗
  91. 2024-02-278-K
    2.02Results of Operations (Earnings)9.01Financial Statements and Exhibits
    Press release ↗Filing ↗
  92. 2024-02-078-K
    5.02Departure/Election of Directors or Officers
    Filing ↗
  93. 2024-01-058-K
    8.01Other Events9.01Financial Statements and Exhibits
    Filing ↗
  94. 2023-12-148-K
    5.03Amendment to Articles/Bylaws8.01Other Events9.01Financial Statements and Exhibits
    Filing ↗
  95. 2023-10-2610-Q
    Quarterly report · period ended 2023-09-30
    Filing ↗
  96. 2023-10-268-K
    2.02Results of Operations (Earnings)9.01Financial Statements and Exhibits
    Press release ↗Filing ↗

Filings the company made itself, as EDGAR lists them; the documents stay on EDGAR. An 8-K is a current report, its item codes read from the filing metadata and coloured by materiality: high bankruptcy, delisting, restatement, change of control · material earnings, M&A, leadership · routine exhibits, Reg FD, votes. Insider trades (Form 4) are on Insiders; 13D/13G and 13F holders on Ownership.