SEC Form 4 · open-market trades

Insider trading tracker

When a CEO, director or 10% owner buys or sells their own company's stock on the open market, they must file a Form 4 with the SEC within two business days. Every one of those trades filed since 2026-10-22 is here, updated hourly. Buys by several insiders at once (cluster buys) are the ones investors watch most.

Trades

531

Insider buys

145

Buy value

$33.69M

Cluster buys (30d)

8

Cluster buys — several insiders buying (last 30 days)

Showing AMT. Clear · Open AMT analysis

FiledTickerInsiderTitleTypeSharesPriceValue
2026-10-22AMT
AMERICAN TOWER CORP /MA/
Clarke Teresa HillaryDirectorBUY42$183.20$8KSEC filing
2026-10-22AMT
AMERICAN TOWER CORP /MA/
Clarke Teresa HillaryDirectorBUY46$167.52$8KSEC filing
2026-10-22AMT
AMERICAN TOWER CORP /MA/
Clarke Teresa HillaryDirectorBUY43$177.08$8KSEC filing
2026-10-22AMT
AMERICAN TOWER CORP /MA/
Clarke Teresa HillaryDirectorBUY30$178.04$5KSEC filing
2026-10-22AMT
AMERICAN TOWER CORP /MA/
Clarke Teresa HillaryDirectorBUY28$189.12$5KSEC filing
2026-10-22AMT
AMERICAN TOWER CORP /MA/
Clarke Teresa HillaryDirectorBUY24$223.23$5KSEC filing
2026-10-22AMT
AMERICAN TOWER CORP /MA/
Clarke Teresa HillaryDirectorBUY25$209.33$5KSEC filing
2026-10-22AMT
AMERICAN TOWER CORP /MA/
Clarke Teresa HillaryDirectorBUY17$187.27$3KSEC filing
2026-10-22AMT
AMERICAN TOWER CORP /MA/
Clarke Teresa HillaryDirectorBUY14$227.42$3KSEC filing
2026-10-22AMT
AMERICAN TOWER CORP /MA/
Clarke Teresa HillaryDirectorBUY15$204.28$3KSEC filing
2026-10-22AMT
AMERICAN TOWER CORP /MA/
Clarke Teresa HillaryDirectorBUY18$172.82$3KSEC filing
2026-10-22AMT
AMERICAN TOWER CORP /MA/
Clarke Teresa HillaryDirectorBUY7$199.95$2KSEC filing
2026-10-22AMT
AMERICAN TOWER CORP /MA/
Clarke Teresa HillaryDirectorBUY8$171.52$1KSEC filing
2026-10-22AMT
AMERICAN TOWER CORP /MA/
Clarke Teresa HillaryDirectorBUY7$193.78$1KSEC filing
2026-10-22AMT
AMERICAN TOWER CORP /MA/
Clarke Teresa HillaryDirectorBUY6$205.93$1KSEC filing

Source: SEC EDGAR Form 4 filings (open-market purchases and sales only; option exercises, gifts and grants excluded). Research only, not investment advice.

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