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AMT · American Tower Corp

Real Estate · +2.2% on Oct 16

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Updated Oct 17 · 6 feeds behind: Insider filings, 2 days, and 5 more · Every feed →

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The market view

Price chart

The interactive AMT chart (by TradingView) loads here.

Our take

5 rules fired on AMT

In short: none of these rules has solid or some evidence yet, so they show no clear lean on AMT.

How each did in past tests, against similar stocks over 3 months. Past results don't predict future ones.

All 5 rules
The 0–100 score for AMT, and which of these rules are open on it right now
Members see one number for how strongly these rules agree on AMT, and the day each rule fired. Better-tested rules count more, and so do different kinds of filings that point the same way.
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Compare with this company’s history

Is disclosure activity unusual?

See how many different insiders or members of Congress reported purchases or sales of AMT. Each bar covers 28 days, by disclosure date. Several trades by one person count once in each group and period.

Latest period: Sep 21, 2026–Oct 18, 2026 · UTC dates · today is excluded

Congress purchases

Sparse history

Only 0 of 12 earlier periods had activity. That is too little recurring activity to label this count unusual.

Latest 28 days
0
Earlier median
0
Earlier range
0–0
Distinct filers per 28 daysScale: 0–1
Oct 20, 2025Oct 18, 2026
Earlier periodsLatest 28 daysEarlier median 0

Who appears in the latest period?

No named filers on file for this period.

Up to three filers; one example disclosure each.

Inspect this period’s filings

The history behind this view

First stored company disclosure: May 13, 2014. Newest disclosure across this feed: Oct 15, 2026.

Earlier periods in the comparison: 12. Outlined periods are missing data, so they are left out of the comparison. The chart scale changes with the category.

Exact counts, dates and filings for all four categories
Insider purchases · Short history

Only 1 earlier period is on file to compare with. We need at least 6 full periods before calling a count unusual. Earlier median: 1; range: 1–1.

Insider purchases: distinct filers in stored disclosures
Period and filingsFilersHistory
Oct 20, 2025–Nov 16, 2025—Unavailable
Nov 17, 2025–Dec 14, 2025—Unavailable
Dec 15, 2025–Jan 11, 2026—Unavailable
Jan 12, 2026–Feb 8, 2026—Unavailable
Feb 9, 2026–Mar 8, 2026—Unavailable
Mar 9, 2026–Apr 5, 2026—Unavailable
Apr 6, 2026–May 3, 2026—Unavailable
May 4, 2026–May 31, 2026—Unavailable
Jun 1, 2026–Jun 28, 2026—Unavailable
Jun 29, 2026–Jul 26, 2026—Unavailable
Jul 27, 2026–Aug 23, 20260Partial; excluded
Aug 24, 2026–Sep 20, 20261Within stored history
Sep 21, 2026–Oct 18, 2026Latest period0Within stored history
Insider sales · Short history

Only 1 earlier period is on file to compare with. We need at least 6 full periods before calling a count unusual. Earlier median: 0; range: 0–0.

Insider sales: distinct filers in stored disclosures
Period and filingsFilersHistory
Oct 20, 2025–Nov 16, 2025—Unavailable
Nov 17, 2025–Dec 14, 2025—Unavailable
Dec 15, 2025–Jan 11, 2026—Unavailable
Jan 12, 2026–Feb 8, 2026—Unavailable
Feb 9, 2026–Mar 8, 2026—Unavailable
Mar 9, 2026–Apr 5, 2026—Unavailable
Apr 6, 2026–May 3, 2026—Unavailable
May 4, 2026–May 31, 2026—Unavailable
Jun 1, 2026–Jun 28, 2026—Unavailable
Jun 29, 2026–Jul 26, 2026—Unavailable
Jul 27, 2026–Aug 23, 20262Partial; excluded
Aug 24, 2026–Sep 20, 20260Within stored history
Sep 21, 2026–Oct 18, 2026Latest period0Within stored history
Congress purchases · Sparse history

Only 0 of 12 earlier periods had activity. That is too little recurring activity to label this count unusual. Earlier median: 0; range: 0–0.

Congress purchases: distinct filers in stored disclosures
Period and filingsFilersHistory
Oct 20, 2025–Nov 16, 20250Within stored history
Nov 17, 2025–Dec 14, 20250Within stored history
Dec 15, 2025–Jan 11, 20260Within stored history
Jan 12, 2026–Feb 8, 20260Within stored history
Feb 9, 2026–Mar 8, 20260Within stored history
Mar 9, 2026–Apr 5, 20260Within stored history
Apr 6, 2026–May 3, 20260Within stored history
May 4, 2026–May 31, 20260Within stored history
Jun 1, 2026–Jun 28, 20260Within stored history
Jun 29, 2026–Jul 26, 20260Within stored history
Jul 27, 2026–Aug 23, 20260Within stored history
Aug 24, 2026–Sep 20, 20260Within stored history
Sep 21, 2026–Oct 18, 2026Latest period0Within stored history
Congress sales · Sparse history

Only 2 of 12 earlier periods had activity. That is too little recurring activity to label this count unusual. Earlier median: 0; range: 0–2.

Congress sales: distinct filers in stored disclosures
Period and filingsFilersHistory
Oct 20, 2025–Nov 16, 20250Within stored history
Nov 17, 2025–Dec 14, 20250Within stored history
Dec 15, 2025–Jan 11, 20260Within stored history
Jan 12, 2026–Feb 8, 20260Within stored history
Feb 9, 2026–Mar 8, 20260Within stored history
Mar 9, 2026–Apr 5, 20260Within stored history
Apr 6, 2026–May 3, 20260Within stored history
May 4, 2026–May 31, 20262Within stored history
Jun 1, 2026–Jun 28, 20260Within stored history
Jun 29, 2026–Jul 26, 20261Within stored history
Jul 27, 2026–Aug 23, 20260Within stored history
Aug 24, 2026–Sep 20, 20260Within stored history
Sep 21, 2026–Oct 18, 2026Latest period0Within stored history
How to read this comparison

The median is the middle count in up to 12 earlier, non-overlapping 28-day periods; the range runs from the smallest to the largest count. The latest period is excluded from both. A comparison needs at least 6 earlier periods, including 3 with activity. The feed’s latest disclosure must be within 7 days of the current period’s end. This freshness check does not verify complete collection.

Insiders include individuals and reporting entities; only purchase and sale codes enter this view. Congress counts reporting members, including their disclosed family transactions. The same filer can appear in purchases and sales, so these categories should not be added into a net count.

These are stored disclosures, not a complete measure of trading. Reporting delays and collection gaps can change the comparison. More activity does not identify a motive or predict a stock’s return.

Company timeline

What has been happening?

May 1, 2026–Oct 16, 2026. Select a month in a category to inspect its records.

Company filings

Insiders

Public officials

Owners & lobbying

All 19 records in this snapshot
  1. Filed
  2. Filed
  3. Filed
  4. Filed
  5. Filed
  6. Disclosed
    Rajesh Kalathur · Purchase

    Transaction dated Aug 21, 2026

  7. Disclosed
    Robert Joseph Meyer · Sale

    Transaction dated Jul 29, 2026

  8. Disclosed
    Ruth T Dowling · Sale

    Transaction dated Jul 28, 2026

  9. Disclosed
    Ruth T Dowling · Sale

    Transaction dated Jul 29, 2026

  10. Filed
  11. Filed
  12. Disclosed
    Alan Armstrong · Sale

    Transaction dated Mar 27, 2026

  13. Record date
    Lobbying for American Tower Corporation ↗

    $15K · by Kearney, Donovan & Mcgee

  14. Record date
    Lobbying for American Tower Corporation ↗

    $290K · by American Tower Corporation

  15. Record date
    Lobbying for American Tower Corporation ↗

    $50K · by Capitol Tax Partners, LLP

  16. Record date
    Lobbying for American Tower Corporation ↗

    $80K · by Brownstein Hyatt Farber Schreck, LLP

  17. Disclosed
    Dwight Evans · Sale

    Transaction dated May 11, 2026

  18. Disclosed
    Richard McCormick · Sale

    Transaction dated Apr 17, 2026

  19. Disclosed
    Richard McCormick · Sale

    Transaction dated Apr 17, 2026

Month counts include every record on file. The lists show the newest records on this page. A dash means none on file that month. Trades use disclosure dates; contract dates follow the source record. Nearby events do not establish the cause of a price move.

Who's buying and selling · last 90 days

Congress

No member bought, 1 sold · 1 Rep

  1. ▼ SELLAlan Armstrong Rep · Senate · OKAMT American Tower Corp$1K–$15Kdisclosed Jul 21 · filed 116 days after the trade · late
See every Congress trade on AMT →

Company insiders

1 buy · 2 sells (4 filed lots) · $1.2M sold · $501K bought

  1. ▲ BUYRajesh Kalathur DirectorAMT American Tower Corp$501Kdisclosed Aug 25 · filed 4 days after the trade
  2. ▼ SELLRobert Joseph Meyer SVP & Advisor to the CFOAMT American Tower Corp$894Kdisclosed Jul 31 · filed 2 days after the trade
  3. ▼ SELLRuth T Dowling EVP, Chief Admin Ofr, GC & SecAMT American Tower Corp$116Kdisclosed Jul 30 · filed 2 days after the trade
  4. ▼ SELLRuth T Dowling EVP, Chief Admin Ofr, GC & SecAMT American Tower Corp$194Kdisclosed Jul 30 · filed 1 day after the trade
See every insider trade on AMT →

Filings & events

Company filings (8-K) 111

Events the company must report to the SEC within days — results, deals, departures, restatements.

What it files 8-Ks about

  • Other events · item 8.0122
  • Directors or officers joined, left or got new pay · item 5.0212
  • Signed a major agreement · item 1.0110
  • Took on new debt · item 2.0310
  • Quarterly or yearly results · item 2.0210
  • Shareholder vote results · item 5.073

Filing red flags 4

Warning signs in the company's own SEC filings — going-concern doubts, control weaknesses, staff comment letters, late filings, restatements, Wells notices, clinical holds, dividend cuts.

Lobbying 65

Lobbying reports filed with the Senate for the company.

$15.3M across 65 reports

Issues named in the most reports

  • Taxation/Internal Revenue Code 65
  • Telecommunications 49
  • Communications/Broadcasting/Radio/TV 34
  • Financial Institutions/Investments/Securities 34
  • Trade (domestic/foreign) 31

Planned insider sales (Form 144) 32

Notices insiders file before they sell certain shares, such as ones they got straight from the company.

2 in the last 90 days · 32 notices on file

The notices on file don't give the sale's size; each sale shows up under company insiders once it is reported.

5% owners (13D / 13G) 2

Investors who reported owning 5% or more — 13D for owners who may push for changes, 13G for owners who just hold.

Push for changes, or just hold?

  • 13G, just holds: 2 filings

Filed by Vanguard Capital Management LLC · Vanguard Portfolio Management LLC

Biggest named funds (13F)

The largest AMT holdings among the well-known funds whose quarterly 13F filings we read — opens here.

Every disclosed trade on AMT

  1. ▲ BUYRajesh Kalathur DirectorAMT American Tower Corp$501Kdisclosed Aug 25 · filed 4 days after the trade
  2. ▼ SELLRobert Joseph Meyer SVP & Advisor to the CFOAMT American Tower Corp$894Kdisclosed Jul 31 · filed 2 days after the trade
  3. ▼ SELLRuth T Dowling EVP, Chief Admin Ofr, GC & SecAMT American Tower Corp$116Kdisclosed Jul 30 · filed 2 days after the trade
  4. ▼ SELLRuth T Dowling EVP, Chief Admin Ofr, GC & SecAMT American Tower Corp$194Kdisclosed Jul 30 · filed 1 day after the trade
  5. ▼ SELLAlan Armstrong Rep · Senate · OKAMT American Tower Corp$1K–$15Kdisclosed Jul 21 · filed 116 days after the trade · late
  6. ▼ SELLDwight Evans Dem · House · PAAMT American Tower Corp$1K–$15Kdisclosed May 14 · filed 3 days after the trade
  7. ▼ SELLRichard McCormick Rep · House · GAAMT American Tower Corp$1K–$15Kdisclosed May 12 · filed 25 days after the trade
  8. ▼ SELLRichard McCormick Rep · House · GAAMT American Tower Corp$1K–$15Kdisclosed May 7 · filed 20 days after the trade
  9. ▼ SELLRitchie Torres Dem · House · NYAMT American Tower Corp$1K–$15Kdisclosed Aug 1, 2025 · filed 21 days after the trade
  10. ▲ BUYRitchie Torres Dem · House · NYAMT American Tower Corp$1K–$15Kdisclosed Aug 1, 2025 · filed 309 days after the trade · late
  11. ▼ SELLJefferson Shreve Rep · House · INAMT American Tower Corp$15K–$50Kdisclosed May 15, 2025 · filed 3 days after the trade
  12. ▼ SELLDwight Evans Dem · House · PAAMT American Tower Corp$1K–$15Kdisclosed Apr 16, 2025 · filed 13 days after the trade
  13. ▲ BUYRobert P. Bresnahan Jr Rep · House · PAAMT American Tower Corp$1K–$15Kdisclosed Apr 8, 2025 · filed the same day
  14. ▼ SELLJulie Johnson Dem · House · TXAMT American Tower Corp$1K–$15Kdisclosed Feb 7, 2025 · filed 23 days after the trade
  15. ▼ SELLPete Sessions Rep · House · TXAMT American Tower Corp$1K–$15Kdisclosed Dec 29, 2023 · filed 1 day after the trade
  16. ▲ BUYRichard McCormick Rep · House · GAAMT American Tower Corp$1K–$15Kdisclosed Apr 10, 2023 · filed 26 days after the trade
  17. ▼ SELLDavid Perdue Rep · Senate · GAAMT American Tower Corp$50K–$100Kdisclosed May 19, 2020 · filed 35 days after the trade
  18. ▼ SELLDavid Perdue Rep · Senate · GAAMT American Tower Corp$1K–$15Kdisclosed Jun 19, 2019 · filed 35 days after the trade
  19. ▼ SELLShelley Moore Capito Rep · Senate · WVAMT American Tower Corp$1K–$15Kdisclosed Apr 15, 2019 · filed 35 days after the trade
  20. ▲ BUYShelley Moore Capito Rep · Senate · WVAMT American Tower Corp$1K–$15Kdisclosed Oct 13, 2017 · filed 35 days after the trade 1 rule fired
  21. ▼ SELLPatty Murray Dem · Senate · WAAMT American Tower Corp$1K–$15Kdisclosed Jul 20, 2017 · filed 35 days after the trade
  22. ▼ SELLBill Cassidy Rep · Senate · LAAMT American Tower Corp$1K–$15Kdisclosed May 3, 2017 · filed 35 days after the trade
  23. ▼ SELLBill Cassidy Rep · Senate · LAAMT American Tower Corp$1K–$15Kdisclosed May 5, 2016 · filed 35 days after the trade
  24. ▼ SELLCory A. Booker Dem · Senate · NJAMT American Tower Corp$50K–$100Kdisclosed Sep 12, 2014 · filed 35 days after the trade
  25. ▲ BUYSusan M. Collins Rep · Senate · MEAMT American Tower Corp$1K–$15Kdisclosed Aug 27, 2014 · filed 35 days after the trade
See all 27 trades on AMT →
People & votes

Which members of Congress traded AMT, sponsored bills that touch it and voted on them — opens here.