The simultaneous open-market sales by both the CEO and CFO/COO, without disclosed 10b5-1 plans, suggest possible caution ahead of upcoming events. Monitor for any forthcoming 8-K filings, earnings pre-announcements, or material developments that could explain the insider selling.
Price Chart
Executive Summary
Two top executives at Personalis (CEO and CFO/COO) sold a combined $169K in open-market sales on the same day, September 18, 2026. While the dollar amount is modest relative to the company's market cap, the simultaneous selling by both the CEO and CFO/COO warrants attention as a potential signal of insider caution.
Key Financial Metrics
Key Facts
- CEO Christopher M. Hall sold 7,500 shares for $121K on September 18, 2026.
- CFO/COO Aaron Tachibana sold 2,900 shares for $48K on September 18, 2026.
- Total insider sales of $169K occurred on the same day, with no indication of 10b5-1 plans.
- Both sales were open-market (code S), not tax-withholding or plan-driven.
Financial Impact
Total sales of $169K, approximately 0.05% of market cap (assuming ~$326M market cap).
Risk Factors
- Insider selling could precede negative news or a guidance revision.
- The modest dollar amount relative to market cap may limit the signal's significance.
- No 10b5-1 plan disclosure reduces the likelihood of routine liquidity-driven sales.
Investment Themes
Documents Analyzed
This report is based on 1 SEC document filed with EDGAR.
| Document | Accession Number |
|---|---|
| CLUSTER Data (Synthetic) | cluster-PSNL-1790144509871 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Oct 21, 2026 6d ago | DEFM14A | $15.82 | awaiting T+20 | — | $15.98 (+1.01%) |
Oct 20, 2026 6d ago | 425 | $15.90 | awaiting T+20 | — | $15.98 (+0.50%) |
Oct 20, 2026 7d ago | 425 | $15.90 | awaiting T+20 | — | $15.98 (+0.50%) |
Oct 20, 2026 7d ago | SC 13E-3/A | $15.90 | awaiting T+20 | — | $15.98 (+0.50%) |
Oct 6, 2026 21d ago | 425 | $16.00 | awaiting T+20 | — | $15.98 (−0.13%) |
Oct 6, 2026 21d ago | 8-K | $16.00 | awaiting T+20 | — | $15.98 (−0.13%) |
Oct 2, 2026 25d ago | SC 13E-3/A | $16.40 | awaiting T+20 | — | $15.98 (−2.56%) |
Sep 22, 2026 5w ago | Insider Cluster | $16.35 $15.90 | ▲ +2.75% | ▲ +3.44% | $15.98 (+2.26%) |
Aug 9, 2026 11w ago | Institutional Cluster | $14.50 $16.60 | ▲ +14.48% | ▲ +15.40% | $15.98 (+10.21%) |
Jul 20, 2026 14w ago | 425 | $13.44 $13.91 | ▲ +3.50% | ▲ +0.94% | $15.98 (+18.90%) |
US Market Status
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