The insider sales are routine and immaterial relative to AEIS's $11.8B market cap. The COO's larger separate cluster of ~$8.9M in sales on the same day warrants monitoring for any subsequent 8-K filings or earnings announcements, but this specific cluster filing alone does not signal deterioration. Given the 25% historical win rate on AEIS reports, avoid trading on this signal. Monitor next quarterly earnings for any guidance changes.
Price Chart
Executive Summary
Two AEIS insiders, including the EVP and COO and EVP/General Counsel, sold a total of $428K in open-market transactions on August 18, 2026. The COO's sales follow a derivative exercise and represent a large cluster of 20 trades totaling ~$8.9M, but the $428K reported in this cluster filing is modest relative to AEIS's $11.8B market cap (0.004%). The sales are likely liquidity-driven post-exercise and carry limited informational signal per the insider-selling literature, especially given the company's strong analyst consensus (80% bullish). Historical calibration shows prior AEIS reports have a 25% win rate at T+20 with -5.26% average return, suggesting caution against over-interpreting routine insider sales.
Key Financial Metrics
Key Facts
- Two AEIS insiders sold shares on August 18, 2026: EVP/COO Eduardo Bernal sold 406 shares at $309.73 ($126K) and EVP/General Counsel Elizabeth Karpinski sold 908 shares at $332.68 ($302K).
- Total open-market sales in this cluster: $428K, representing ~0.004% of AEIS's $11.8B market cap — well below the 0.1% threshold for materiality.
- The COO's sales follow a derivative exercise of 6,042 shares at $85.97 (non-cash) and include a much larger separate cluster of 20 trades totaling ~$8.9M on the same day, but those are not part of this filing.
- AEIS has an 80% bullish analyst consensus (6 Strong Buy, 10 Buy, 4 Hold) and $11.8B market cap, indicating strong institutional confidence.
- Historical calibration on AEIS reports shows a 25% win rate at T+20 with -5.26% average return, suggesting prior insider signals have not been predictive.
Financial Impact
Total insider sales of $428K represent 0.004% of market cap — immaterial
Risk Factors
- Insider sales may be misinterpreted as bearish despite being routine post-exercise liquidity events
- Historical calibration shows poor predictive power for AEIS insider signals (25% win rate at T+20)
Market Snapshot
Investment Themes
Documents Analyzed
This report is based on 1 SEC document filed with EDGAR.
| Document | Accession Number |
|---|---|
| CLUSTER Data (Synthetic) | cluster-AEIS-1787253609014 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Sep 10, 2026 21d ago | Insider Cluster | $287.25 $262.20 | ▼ −8.72% | ▼ −8.50% | $304.28 (+5.93%) |
Aug 20, 2026 6w ago | Insider Cluster | $292.62 $287.09 | ▼ −1.89% | ▼ −3.00% | $304.28 (+3.98%) |
Jul 30, 2026 9w ago | Institutional Cluster | $274.26 $323.91 | ▲ +18.10% | ▲ +14.48% | $304.28 (+10.95%) |
Jul 24, 2026 10w ago | Court Ruling | $303.99 $274.26 | ▼ −9.78% | ▼ −10.15% | $304.28 (+0.10%) |
Jun 12, 2026 16w ago | 8-K | $354.37 $372.59 | ▲ +5.14% | ▲ +4.47% | $304.28 (−14.13%) |
May 18, 2026 19w ago | 8-K | $302.75 $329.13 | ▼ −8.71% | ▼ −6.47% | $304.28 (−0.51%) |
May 8, 2026 21w ago | 8-K | $357.24 $344.60 | ▼ −3.54% | ▼ −5.00% | $304.28 (−14.82%) |
Apr 15, 2026 24w ago | Insider Cluster | $374.32 $377.19 | ▲ +0.77% | ▼ −0.87% | $304.28 (−18.71%) |
Mar 13, 2026 29w ago | Insider Cluster | $302.02 $317.21 | ▼ −5.03% | ▼ −7.15% | $304.28 (−0.75%) |
Mar 10, 2026 29w ago | Insider Cluster | $311.39 $315.91 | ▲ +1.45% | ▲ +2.36% | $304.28 (−2.28%) |
US Market Status
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