The level of open-market selling is routine for a company of this size and does not indicate material concern. Monitor for increased selling volume or participation from CEO/CFO in future filings.
Price Chart
Executive Summary
An insider trading cluster at American Tower Corp (AMT) over the past week includes one derivative exercise and two open-market sales by executive officers. The total value of open-market sales is approximately $954K, with the largest sale coming from the SVP & Chief Accounting Officer.
Key Financial Metrics
Key Facts
- EVP & COO Noel Eugene M exercised options for 41,209 shares at $94.71, valued at $3.9M (non-cash transaction).
- EVP Ruth T Dowling sold 656 shares for $122,121 in open-market transactions.
- SVP & Chief Accounting Officer Robert Joseph Meyer sold 4,454 shares for $831,695 in open-market transactions.
- Total open-market selling volume: $953,816 over 7 days.
- Open-market sales represent approximately 0.001% of AMT's $88.7B market cap — well below materiality threshold.
Financial Impact
$954K in open-market sales, 0.001% of market cap
Risk Factors
- Perception risk if media mischaracterizes the derivative exercise as insider selling.
- Potential for increased scrutiny if selling continues ahead of next earnings.
Market Snapshot
Investment Themes
Documents Analyzed
This report is based on 1 SEC document filed with EDGAR.
| Document | Accession Number |
|---|---|
| CONTEXT: Insider Cluster Data (3 trades, 7d window) | cluster-AMT-1772659469585 |
Track record builds as more directional reports settle.
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Sep 14, 2026 17d ago | 8-K | $177.71 $175.25 | ▼ −1.38% | ▼ −3.51% | $162.01 (−8.84%) |
Sep 9, 2026 23d ago | 424B5 | $175.43 $176.39 | ▲ +0.55% | ▲ +1.20% | $162.01 (−7.65%) |
Aug 25, 2026 5w ago | Insider Buy | $178.57 $176.02 | ▼ −1.43% | ▼ −0.89% | $162.01 (−9.28%) |
Aug 1, 2026 8w ago | Institutional Cluster | $173.00 $169.11 | ▲ +2.25% | ▲ +4.28% | $162.01 (+6.36%) |
Jul 31, 2026 9w ago | Insider Cluster | $173.36 $172.54 | ▼ −0.47% | ▼ −3.98% | $162.01 (−6.55%) |
Jul 28, 2026 9w ago | 8-K | $171.50 $173.00 | ▲ +0.87% | ▼ −1.39% | $162.01 (−5.54%) |
Jun 4, 2026 17w ago | 8-K | $194.12 $187.18 | ▼ −3.58% | ▼ −4.14% | $162.01 (−16.54%) |
May 27, 2026 18w ago | 8-K | $184.86 $182.05 | ▼ −1.52% | ▼ −1.99% | $162.01 (−12.36%) |
May 21, 2026 19w ago | 8-K | $183.73 $186.93 | ▲ +1.74% | ▲ +0.08% | $162.01 (−11.82%) |
May 19, 2026 19w ago | 424B5 | $182.23 $184.86 | ▲ +1.44% | ▼ −0.85% | $162.01 (−11.10%) |
US Market Status
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