By CapitalSnitch Research Desk · updated Oct 11, 2026 · data from SEC filings and official Congress disclosures
AMT insiders were on both sides of the trade this year. Buys came to roughly $2 million (two buyers), sales to $23.2 million (five sellers).
Biggest single buyer: REILLY EUGENE F, Director, with roughly $994,000.
3 quarters in a row of net selling by insiders. Insiders bought in 3 of the last 7 full quarters. Big money check: 1,747 institutions held AMT as of Q2 2026, and funds were split between buying and selling. AMT also shows up in congressional disclosures: 10 reported trades from seven lawmakers in two years.
Are insiders buying or selling AMT stock?
In the last 12 months American Tower Corp insiders made open-market purchases worth about $2 million and sales worth about $23.2 million. Data comes from SEC Form 4 filings, updated every 30 minutes on CapitalSnitch.
When was the last insider trade in AMT?
The most recent open-market insider trade in AMT was filed on 2026-08-25.
How many institutions own AMT?
1,747 investment managers reported holding AMT in SEC Form 13F filings for Q2 2026.
Has any member of Congress traded AMT?
Yes. Members of Congress reported 10 trades in AMT over the past two years. The full list is free on CapitalSnitch.
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Public-record data for research and education, not investment advice. Insider sales are often pre-planned (10b5-1).
Congress data: Data derived from public disclosures filed under the Ethics in Government Act and the STOCK Act, republished free for public transparency and news reporting. Disclosures may lag the trade by 45 days or more and show amounts only as ranges. This data may not be used for credit rating, loan underwriting, solicitation of money (political, charitable or other), direct-mail or commercial targeting (5 U.S.C. 13107).