The CTO's $25M+ open-market sale is a strong bearish signal, especially given the lack of a 10b5-1 plan. Monitor for any subsequent Form 4 filings or 8-K disclosures that may explain the sale. The stock's ability to hold above $200 will be tested given this insider conviction signal.
Price Chart
Executive Summary
Cerebras CTO Sean Lie executed a massive open-market sale of ~120,000 shares worth approximately $25M on September 25, 2026, alongside derivative exercises and gifts. The CAO also sold $270K worth of shares. The CTO's sales represent a material insider liquidation event, though the stock price remains elevated above $200.
Key Financial Metrics
Key Facts
- CTO Sean Lie sold ~120,000 shares in open-market transactions totaling approximately $25M on September 25, 2026
- Lie also exercised 240,000 derivative shares at $0 and gifted 36,000 shares
- CAO Yagnesh Patel sold 1,300 shares for $270K on September 28, 2026
- Total insider selling value in the cluster: approximately $25.3M
- All sales were open-market (code S) with no 10b5-1 plan indicated
- Stock price at time of sales ranged from $204.50 to $212.14
Financial Impact
CTO sold ~$25M of stock in a single day, representing a material insider liquidation
Risk Factors
- Insider selling of this magnitude by the CTO suggests potential overvaluation or upcoming negative catalysts
- No 10b5-1 plan indicated, making this an opportunistic sale
Documents Analyzed
This report is based on 1 SEC document filed with EDGAR.
| Document | Accession Number |
|---|---|
| CLUSTER Data (Synthetic) | cluster-CBRS-1790807647855 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Oct 27, 2026 today | Press Release | $118.27 | awaiting T+1 | — | $118.93 (+0.56%) |
Oct 20, 2026 6d ago | Institutional Cluster | $117.98 $108.94 | ▼ −7.66% | ▼ −6.48% | $118.93 (+0.81%) |
Oct 20, 2026 6d ago | Press Release | $117.98 | awaiting T+1 | — | $118.93 (+0.81%) |
Oct 12, 2026 15d ago | Institutional Cluster | $146.62 $149.09 | ▲ +1.68% | ▲ +1.69% | $118.93 (−18.88%) |
Sep 30, 2026 26d ago | Insider Cluster | $169.52 $166.43 | ▲ +1.82% | ▲ +2.56% | $118.93 (+29.84%) |
Sep 30, 2026 26d ago | Insider Cluster | $169.52 $166.43 | ▲ +1.82% | ▲ +2.56% | $118.93 (+29.84%) |
Sep 8, 2026 6w ago | Insider Cluster | $196.20 $191.34 | ▲ +2.48% | ▲ +1.88% | $118.93 (+39.38%) |
Sep 8, 2026 6w ago | Insider Cluster | $196.20 $191.34 | ▲ +2.48% | ▲ +1.88% | $118.93 (+39.38%) |
Sep 4, 2026 7w ago | 144 | $199.77 $196.20 | ▼ −1.79% | ▼ −1.32% | $118.93 (−40.46%) |
Sep 1, 2026 8w ago | Press Release | $172.62 $184.52 | ▲ +6.89% | ▲ +6.45% | $118.93 (−31.10%) |
US Market Status
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