This is a routine insider sale following option exercise, likely for tax or liquidity purposes. The small size relative to market cap suggests no material signal. Monitor for any subsequent Form 4 filings to confirm execution, and watch for any unusual insider selling patterns ahead of the next earnings report.
Price Chart
Executive Summary
Aaron Tachibana, an officer of Personalis, Inc., filed a Form 144 on May 29, 2026, indicating intent to sell 38,799 shares of common stock, with an estimated aggregate market value of approximately $426,013. The shares are proposed to be sold following the exercise of stock options. This is a routine insider transaction for tax or diversification purposes, but the timing and size relative to the officer's holdings are not disclosed in the filing.
Key Facts
- Officer Aaron Tachibana filed Form 144 to sell 38,799 shares of Personalis common stock.
- Estimated aggregate market value of the proposed sale is approximately $426,013.
- Shares were acquired through the exercise of stock options on May 29, 2026.
- The sale is proposed to occur on or after May 29, 2026, on the Nasdaq exchange.
- No other insider sales or purchases were reported in the prior 30 days.
Financial Impact
Proposed sale of 38,799 shares valued at ~$426,013, representing a small fraction of the company's $1.1B market cap.
Risk Factors
- Insider sale could signal lack of confidence if followed by additional large sales by other officers.
- Form 144 is only an intent to sell; the sale may not occur.
Market Snapshot
Investment Themes
Documents Analyzed
This report is based on 3 SEC documents filed with EDGAR.
| Document | Accession Number |
|---|---|
| 144 Filing (Primary) | 0001950047-26-005302 |
| Document: 0001950047-26-005302-index.html | 0001950047-26-005302 |
| Document: 0001950047-26-005302.txt | 0001950047-26-005302 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Aug 9, 2026 7w ago | Institutional Cluster | $14.50 $16.60 | ▲ +14.48% | ▲ +15.40% | $16.28 (+12.28%) |
Jul 20, 2026 10w ago | 425 | $13.44 $13.91 | ▲ +3.50% | ▲ +0.94% | $16.28 (+21.13%) |
Jul 20, 2026 10w ago | 8-K | $13.44 $13.91 | ▲ +3.50% | ▲ +0.94% | $16.28 (+21.13%) |
Jul 20, 2026 10w ago | 425 | $13.34 $13.89 | ▲ +4.12% | ▲ +0.00% | $16.28 (+22.04%) |
Jul 20, 2026 10w ago | 8-K | $13.34 $13.89 | ▲ +4.12% | ▲ +0.00% | $16.28 (+22.04%) |
Jul 16, 2026 11w ago | Insider Cluster | $15.58 $14.42 | ▼ −7.45% | ▼ −11.06% | $16.28 (+4.49%) |
Jun 29, 2026 13w ago | 144 | $13.40 $11.98 | ▼ −10.60% | ▼ −9.57% | $16.28 (+21.49%) |
Jun 26, 2026 14w ago | 144 | $13.75 $11.78 | ▼ −14.33% | ▼ −14.05% | $16.28 (+18.40%) |
Jun 26, 2026 14w ago | 144 | $13.75 $11.78 | ▼ −14.33% | ▼ −14.05% | $16.28 (+18.40%) |
Jun 6, 2026 16w ago | Insider Cluster | $10.04 $14.34 | ▲ +42.83% | ▲ +41.20% | $16.28 (+62.15%) |
US Market Status
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