The director's sales are likely routine portfolio diversification following the stock's strong post-earnings run. With the company guiding Q3 revenue to $1.95B-$2.05B and gross margin expanding to 18.5%-19.5%, the fundamental outlook remains bullish. Monitor for any C-suite selling beyond the CEO's small July 30 trade, but this cluster alone does not warrant a bearish read-through.
Price Chart
Executive Summary
Director Guillaume Marie Jean Rutten sold $2.75M worth of AMKR shares in two open-market transactions on August 5-6, 2026, at prices around $54.50-$55.35. This follows the CEO's small $151K sale on July 30. The insider selling cluster occurs just 11 days after a massive Q2 earnings beat (EPS $0.70 vs $0.48 consensus, record revenue $1.90B) and raised Q3 guidance, suggesting these are routine diversification sales by a director rather than a bearish signal on the company's strong fundamentals. At $1.54M total vs a $13.5B market cap, the cluster represents just 0.01% of market cap — well below the 0.1% materiality threshold.
Key Financial Metrics
Key Facts
- Director Rutten sold 25,000 shares at $55.35 on Aug 5 and 25,000 shares at $54.50 on Aug 6, totaling $2.75M in open-market sales
- CEO Engel sold 3,200 shares at $47.00 on July 30 for $151K
- Total cluster value of $2.9M represents ~0.02% of AMKR's $13.5B market cap
- Sales occurred 11 days after Amkor reported Q2 2026 EPS of $0.70 (beat by 45.8%) on record revenue of $1.90B (+26% YoY) and raised Q3 guidance to $1.95B-$2.05B
Financial Impact
Not specified
Risk Factors
- Director sold near 52-week highs after a strong earnings-driven rally — could indicate valuation concerns at current levels
- CEO's small sale on July 30 may be tax-related but bears watching if it escalates
- Semiconductor cyclicality remains a risk despite AI/HPC demand strength
Market Snapshot
Investment Themes
Documents Analyzed
This report is based on 1 SEC document filed with EDGAR.
| Document | Accession Number |
|---|---|
| CLUSTER Data (Synthetic) | cluster-AMKR-1786165551122 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Aug 19, 2026 6w ago | Insider Cluster | $50.89 $47.95 | ▼ −5.78% | ▼ −3.83% | $56.08 (+10.20%) |
Aug 13, 2026 7w ago | Insider Cluster | $57.75 $51.73 | ▼ −10.42% | ▼ −8.68% | $56.08 (−2.89%) |
Aug 11, 2026 7w ago | Insider Cluster | $54.30 $51.35 | ▼ −5.43% | ▼ −4.37% | $56.08 (+3.28%) |
Aug 7, 2026 8w ago | Insider Cluster | $55.27 $47.77 | ▼ −13.57% | ▼ −13.17% | $56.08 (+1.47%) |
Aug 3, 2026 8w ago | Institutional Cluster | $50.84 $47.30 | ▼ −6.96% | ▼ −8.20% | $56.08 (+10.31%) |
Jul 27, 2026 9w ago | 8-K | $45.69 $48.70 | ▲ +6.59% | ▲ +3.21% | $56.08 (+22.74%) |
Jul 23, 2026 10w ago | Institutional Cluster | $65.33 $50.86 | ▼ −22.15% | ▼ −25.46% | $56.08 (−14.16%) |
Jul 20, 2026 10w ago | Insider Cluster | $62.56 $61.30 | ▼ −2.01% | ▼ −6.13% | $56.08 (−10.36%) |
Jul 20, 2026 10w ago | Insider Cluster | $62.56 $61.30 | ▼ −2.01% | ▼ −6.13% | $56.08 (−10.36%) |
May 21, 2026 19w ago | 8-K | $65.90 $93.63 | ▲ +42.07% | ▲ +41.74% | $56.08 (−14.90%) |
US Market Status
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