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AMT

SEC EDGAR filings — 10-K/Q, 8-K, Form 4 insider transactions, offerings, ownership reports.

  • Overview
  • Financials
  • Filings
  • Short Interest
  • Ownership
  • Ratings
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⚠️

Recent dilution risk

7 additional offering or shelf registration filings in the last 200 filings. Verify directly in SEC EDGAR before making any decisions.

424B2 2025-12-03 · 424B2FWP 2025-12-02 · FWP424B5 2025-12-02 · 424B5
AllFinancial (10-K/Q)Material (8-K)Offerings (S-1/S-3/424B)Insider (Form 4)Ownership (13D/G/F)

80 filings

  • ARS
    ARS
    d54935dars.pdf
    2026-04-08
    6d ago
    3.6 MB ↗
  • DEFA14A
    DEFA14A
    defa14a-notice2026.htm
    2026-04-08
    6d ago
    2.5 MB ↗
  • DEF 14A
    DEF 14A
    amt-20260406.htm
    2026-04-08
    6d ago
    106.4 MB ↗
  • SCHEDULE 13G/A
    SCHEDULE 13G/A

Filings sourced directly from SEC EDGAR. Click any row to open the original document on sec.gov.

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xslSCHEDULE_13G_X02/primary_doc.xml
2026-03-26
19d ago
7 KB ↗
  • 4
    FORM 4
    xslF345X05/wk-form4_1773348258.xml
    2026-03-12
    1mo ago
    8 KB ↗
  • 4
    FORM 4
    xslF345X05/wk-form4_1773348211.xml
    2026-03-12
    1mo ago
    8 KB ↗
  • 4
    FORM 4
    xslF345X05/wk-form4_1773348168.xml
    2026-03-12
    1mo ago
    8 KB ↗
  • 4
    FORM 4
    xslF345X05/wk-form4_1773348112.xml
    2026-03-12
    1mo ago
    8 KB ↗
  • 4
    FORM 4
    xslF345X05/wk-form4_1773348048.xml
    2026-03-12
    1mo ago
    8 KB ↗
  • 4
    FORM 4
    xslF345X05/wk-form4_1773347933.xml
    2026-03-12
    1mo ago
    8 KB ↗
  • 4
    FORM 4
    xslF345X05/wk-form4_1773347882.xml
    2026-03-12
    1mo ago
    8 KB ↗
  • 4
    FORM 4
    xslF345X05/wk-form4_1773347832.xml
    2026-03-12
    1mo ago
    5 KB ↗
  • 4
    FORM 4
    xslF345X05/wk-form4_1773347740.xml
    2026-03-12
    1mo ago
    5 KB ↗
  • 4
    FORM 4
    xslF345X05/wk-form4_1773347695.xml
    2026-03-12
    1mo ago
    7 KB ↗
  • 4
    FORM 4
    xslF345X05/wk-form4_1773347642.xml
    2026-03-12
    1mo ago
    5 KB ↗
  • 4
    FORM 4
    xslF345X05/wk-form4_1773347562.xml
    2026-03-12
    1mo ago
    5 KB ↗
  • 4
    FORM 4
    xslF345X05/wk-form4_1773347512.xml
    2026-03-12
    1mo ago
    5 KB ↗
  • 4
    FORM 4
    xslF345X05/wk-form4_1773347427.xml
    2026-03-12
    1mo ago
    5 KB ↗
  • 4
    FORM 4
    xslF345X05/wk-form4_1773347315.xml
    2026-03-12
    1mo ago
    5 KB ↗
  • 4
    FORM 4
    xslF345X05/wk-form4_1773346784.xml
    2026-03-12
    1mo ago
    5 KB ↗
  • 4
    FORM 4
    xslF345X05/wk-form4_1773346648.xml
    2026-03-12
    1mo ago
    5 KB ↗
  • 4
    FORM 4
    xslF345X05/wk-form4_1773346583.xml
    2026-03-12
    1mo ago
    5 KB ↗
  • 8-K
    8-K
    amt-20260306.htm· Items: 5.02
    2026-03-10
    1mo ago
    289 KB ↗
  • 4
    FORM 4
    xslF345X05/wk-form4_1772832182.xml
    2026-03-06
    1mo ago
    12 KB ↗
  • 4
    FORM 4
    xslF345X05/wk-form4_1772831875.xml
    2026-03-06
    1mo ago
    5 KB ↗
  • 8-K
    8-K
    amt-20260305.htm· Items: 8.01,9.01
    2026-03-05
    1mo ago
    322 KB ↗
  • 4
    FORM 4
    xslF345X05/wk-form4_1772659236.xml
    2026-03-04
    1mo ago
    14 KB ↗
  • 144
    144
    xsl144X01/primary_doc.xml
    2026-03-04
    1mo ago
    5 KB ↗
  • 4
    FORM 4
    xslF345X05/wk-form4_1772572537.xml
    2026-03-03
    1mo ago
    5 KB ↗
  • 4
    FORM 4
    xslF345X05/wk-form4_1772572431.xml
    2026-03-03
    1mo ago
    5 KB ↗
  • 144
    144
    xsl144X01/primary_doc.xml
    2026-03-02
    1mo ago
    5 KB ↗
  • 144
    144
    xsl144X01/primary_doc.xml
    2026-02-27
    1mo ago
    5 KB ↗
  • 144
    144
    xsl144X01/primary_doc.xml
    2026-02-27
    1mo ago
    9 KB ↗
  • 8-K
    8-K
    amt-20260225.htm· Items: 5.02
    2026-02-27
    1mo ago
    299 KB ↗
  • 4
    FORM 4
    xslF345X05/wk-form4_1772226601.xml
    2026-02-27
    1mo ago
    5 KB ↗
  • 4
    FORM 4
    xslF345X05/wk-form4_1772226496.xml
    2026-02-27
    1mo ago
    5 KB ↗
  • 4
    FORM 4
    xslF345X05/wk-form4_1772226393.xml
    2026-02-27
    1mo ago
    5 KB ↗
  • 144
    144
    xsl144X01/primary_doc.xml
    2026-02-25
    1mo ago
    6 KB ↗
  • 10-K
    10-K
    amt-20251231.htm
    2026-02-24
    1mo ago
    24.4 MB ↗
  • 8-K
    8-K
    amt-20260224.htm· Items: 2.02,9.01
    2026-02-24
    1mo ago
    1.5 MB ↗
  • 4
    FORM 4
    xslF345X05/wk-form4_1771535252.xml
    2026-02-19
    1mo ago
    13 KB ↗
  • 144
    144
    xsl144X01/primary_doc.xml
    2026-02-17
    1mo ago
    5 KB ↗
  • 8-K
    8-K
    amt-20260126.htm· Items: 5.02
    2026-01-29
    2mo ago
    294 KB ↗
  • 8-K
    8-K
    amt-20260128.htm· Items: 8.01
    2026-01-28
    2mo ago
    291 KB ↗
  • 4
    FORM 4
    xslF345X05/wk-form4_1767734833.xml
    2026-01-06
    3mo ago
    5 KB ↗
  • 4
    FORM 4
    xslF345X05/wk-form4_1767734715.xml
    2026-01-06
    3mo ago
    4 KB ↗
  • 4
    4
    xslF345X05/ownership.xml
    2025-12-11
    4mo ago
    9 KB ↗
  • SCHEDULE 13D/A
    SCHEDULE 13D/A
    xslSCHEDULE_13D_X01/primary_doc.xml
    2025-12-11
    4mo ago
    13 KB ↗
  • 144
    144
    xsl144X01/primary_doc.xml
    2025-12-09
    4mo ago
    5 KB ↗
  • 8-K
    8-K
    d20014d8k.htm· Items: 1.01,2.03,9.01
    2025-12-05
    4mo ago
    548 KB ↗
  • 8-K
    8-K
    amt-20251204.htm· Items: 8.01,9.01
    2025-12-04
    4mo ago
    325 KB ↗
  • 424B2
    424B2
    d842163d424b2.htm
    2025-12-03
    4mo ago
    975 KB ↗
  • 8-K
    8-K
    amt-20251202.htm· Items: 8.01,9.01
    2025-12-02
    4mo ago
    327 KB ↗
  • FWP
    FWP
    d69539dfwp.htm
    2025-12-02
    4mo ago
    15 KB ↗
  • 424B5
    424B5
    d842163d424b5.htm
    2025-12-02
    4mo ago
    826 KB ↗
  • 8-K
    8-K
    amt-20251105.htm· Items: 5.02
    2025-11-07
    5mo ago
    291 KB ↗
  • 4
    FORM 4
    xslF345X05/wk-form4_1762290623.xml
    2025-11-04
    5mo ago
    5 KB ↗
  • 10-Q
    10-Q
    amt-20250930.htm
    2025-10-28
    5mo ago
    14.3 MB ↗
  • 8-K
    8-K
    amt-20251028.htm· Items: 2.02,9.01
    2025-10-28
    5mo ago
    1.2 MB ↗
  • 4
    FORM 4
    xslF345X05/wk-form4_1759522276.xml
    2025-10-03
    6mo ago
    5 KB ↗
  • 8-K
    8-K
    amt-20250923.htm· Items: 7.01
    2025-09-24
    6mo ago
    294 KB ↗
  • 4
    FORM 4
    xslF345X05/wk-form4_1758658687.xml
    2025-09-23
    6mo ago
    6 KB ↗
  • 8-K
    8-K
    amt-20250916.htm· Items: 5.02,8.01,9.01
    2025-09-18
    6mo ago
    325 KB ↗
  • 8-K
    8-K
    d875782d8k.htm· Items: 1.01,2.03,9.01
    2025-09-16
    7mo ago
    348 KB ↗
  • 424B2
    424B2
    d91031d424b2.htm
    2025-09-12
    7mo ago
    1.0 MB ↗
  • 8-K
    8-K
    amt-20250911.htm· Items: 8.01,9.01
    2025-09-11
    7mo ago
    328 KB ↗
  • FWP
    FWP
    d18848dfwp.htm
    2025-09-11
    7mo ago
    19 KB ↗
  • 424B5
    424B5
    d91031d424b5.htm
    2025-09-11
    7mo ago
    887 KB ↗
  • 8-K
    8-K
    amt-20250903.htm· Items: 7.01
    2025-09-05
    7mo ago
    294 KB ↗
  • 3
    FORM 3
    xslF345X02/wk-form3_1756498940.xml
    2025-08-29
    7mo ago
    555 KB ↗
  • 8-K
    8-K
    amt-20250822.htm· Items: 5.02,9.01
    2025-08-25
    7mo ago
    330 KB ↗
  • 4
    FORM 4
    xslF345X05/wk-form4_1754079077.xml
    2025-08-01
    8mo ago
    5 KB ↗
  • 144
    144
    xsl144X01/primary_doc.xml
    2025-07-31
    8mo ago
    5 KB ↗
  • 10-Q
    10-Q
    amt-20250630.htm
    2025-07-29
    8mo ago
    14.1 MB ↗
  • 8-K
    8-K
    amt-20250729.htm· Items: 2.02,9.01
    2025-07-29
    8mo ago
    1.2 MB ↗
  • 4
    FORM 4
    xslF345X05/wk-form4_1748981912.xml
    2025-06-03
    10mo ago
    5 KB ↗
  • CERT
    NYSE CERTIFICATION
    AMT32B060225.pdf
    2025-06-02
    10mo ago
    37 KB ↗
  • S-3ASR
    S-3ASR
    d948506ds3asr.htm
    2025-06-02
    10mo ago
    1.9 MB ↗
  • 8-A12B
    8-A12B
    form8-a12beurobondmay2025.htm
    2025-05-30
    10mo ago
    21 KB ↗
  • 8-K
    FORM 8-K
    d34761d8k.htm· Items: 1.01,2.03,9.01
    2025-05-30
    10mo ago
    547 KB ↗
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