Company profile

American Tower Corp /ma/ Insider Trading

AMT

Every SEC Form 4 insider trading filing for American Tower Corp /ma/ (AMT) since April 2023 — open-market buys and sells by directors and officers, option exercises, and cluster activity, updated as each filing is reported to the SEC. Why 2023?

Exchange
NYSE
Sector
Real Estate Investment Trusts
CIK
0001053507
Filings
131
Insiders
26
Last filing
2026-07-29
SEC EDGAR ↗Yahoo Finance ↗Finviz ↗Stock Analysis ↗

Activity summary

Recent insider activity is bearish. Over the last 30 days, insiders net sold $894K across 1 transaction.

Three year balance

Buy and sell value by quarter, Q4 23 to Q3 26. American Tower Corp /ma/ insiders are net sellers across the period shown.

Q4 23Q1 24Q2 24Q3 24Q4 24Q1 25Q2 25Q3 25Q4 25Q1 26Q2 26Q3 26

Bars below the rule are sales, above are purchases. Largest quarter on the chart is $31.0M.

90 day insight

Over the last 90 days, American Tower Corp /ma/ insiders sold $923K across 2 transactions with no open-market purchases.

  • Most active insider: Meyer Robert Joseph with 2 transactions totaling $923K.
  • Largest single sale: $894K by Meyer Robert Joseph on Jul 29, 2026.
  • 50% of recent sales were pre-scheduled 10b5-1 trades — typically less informative than open-market activity.

Activity skews bearish — sales outpace buys.

Insider Transactions

Sourced from SEC EDGAR Form 4 filings. Updated hourly.

DateInsiderCompanyTypeSharesPriceValue
Jul 29, 2026Meyer Robert JosephAMT
Sale
5,000$178.89$894K
Jul 29, 2026Dowling Ruth TAMT
Sale10b5
1,106$174.96$194K
Jul 28, 2026Dowling Ruth TAMT
Sale10b5
685$169.54$116K
Jun 1, 2026Meyer Robert JosephAMT
Tax Withholding
153$187.53$29K
May 28, 2026Reeve Pamela D AAMT
Gift
810——

45 more transactions hidden

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Query this yourself

The same rows, over the API.

curl "https://api.form4api.com/v1/transactions?ticker=AMT" \
  -H "X-Api-Key: $KEY"
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Top insiders

By total value filed.

Vondran Steven OPresident and CEO6 filings−$6.4M
Noel Eugene MEVP & President, U.S. Tower5 filings−$7.1M
Smith Rodney MEVP, CFO & Treasurer2 filings−$2.6M
Dowling Ruth TEVP, Chief Admin Ofr, GC & Sec7 filings−$2.0M
Meyer Robert JosephSVP & Advisor to the CFO4 filings−$1.3M

Institutional Ownership

Top 13F-HR holders of American Tower Corp /ma/ as of 2026-06-30

↓ decreasing
Total reported AUM
$20.98B
QoQ change
-66.2%
Reporting period
2026-06-30
#1
State Street Corp
CIK 0000093751
$3.65B
22.1M shares
#2
BlackRock, Inc.
CIK 0002012383
$2.55B
15.6M shares
#3
BlackRock, Inc.
CIK 0002012383
$2.29B
14.0M shares

Data source: quarterly 13F-HR filings — institutional holders report positions within 45 days of quarter end. Joined with insider activity above — see who's loading up institutionally while insiders are trading. Full 13F-HR API →