The dollar value is immaterial relative to market cap, and both sales occurred on the same day, suggesting a coordinated liquidity event (e.g., 10b5-1 plan or tax-related sale). No bearish read-through warranted. Monitor for any subsequent Form 4 filings that might reveal 10b5-1 plan adoption or additional insider activity.
Price Chart
Executive Summary
CEO Stephanie Disher and CFO Jack Kienzler sold a combined $1.39M in open-market shares on June 1, 2026, at ~$45.25 per share. The sales represent ~0.04% of ATMU's $3.7B market cap, falling well below the 0.1% materiality threshold, and are likely routine portfolio diversification or tax-planning moves rather than a bearish signal.
Key Financial Metrics
Key Facts
- CEO Stephanie Disher sold 25,652 shares for $1.16M on June 1, 2026.
- CFO Jack Kienzler sold 5,132 shares for $232K on June 1, 2026.
- Total insider sales of $1.39M represent ~0.04% of ATMU's $3.7B market cap.
- Both sales were open-market transactions at $45.247 per share.
- No insider purchases were reported in the cluster window.
Financial Impact
Total insider sales of $1.39M, or ~0.04% of market cap — trivial relative to company size.
Risk Factors
- If additional insider sales emerge in coming weeks without 10b5-1 plan disclosure, the cluster could become more informative.
Market Snapshot
Investment Themes
Documents Analyzed
This report is based on 1 SEC document filed with EDGAR.
| Document | Accession Number |
|---|---|
| CLUSTER Data (Synthetic) | cluster-ATMU-1780439095072 |
Track record builds as more directional reports settle.
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Oct 26, 2026 1d ago | 8-K | $44.61 | awaiting T+20 | — | $45.04 (+0.95%) |
Sep 22, 2026 4w ago | Institutional Cluster | $45.40 $44.75 | ▼ −1.43% | ▼ −0.87% | $45.04 (−0.80%) |
Aug 18, 2026 9w ago | Insider Cluster | $49.89 $45.10 | ▼ −9.60% | ▼ −8.61% | $45.04 (−9.73%) |
Aug 7, 2026 11w ago | 8-K | $51.17 $48.34 | ▼ −5.53% | ▼ −5.13% | $45.04 (−11.99%) |
Jun 2, 2026 20w ago | Insider Cluster | $47.37 $49.71 | ▲ +4.94% | ▲ +5.94% | $45.04 (−4.93%) |
May 13, 2026 23w ago | 8-K | $54.15 $48.18 | ▼ −11.02% | ▼ −10.41% | $45.04 (−16.83%) |
May 11, 2026 24w ago | 3 | $56.60 $48.38 | ▼ −14.52% | ▼ −14.22% | $45.04 (−20.43%) |
May 11, 2026 24w ago | 8-K | $56.60 $48.38 | ▼ −14.52% | ▼ −14.22% | $45.04 (−20.43%) |
US Market Status
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