Insider selling is trivial relative to market cap and does not warrant a bearish read. The Co-CEO's $1.52M sale is likely liquidity-driven given the small proportion of his stake. Monitor for any larger cluster or C-suite selling above 0.1% of market cap before adjusting view.
Price Chart
Executive Summary
Guardant Health (GH) insiders sold $1.54M in shares over the past week, led by Co-CEO AmirAli Talasaz who sold $1.52M in a single open-market transaction on August 21. Director Roberto Mignone exercised non-cash derivative positions with no economic value. The selling represents approximately 0.007% of GH's $22.9B market cap, a trivial amount that does not signal material bearish conviction.
Key Financial Metrics
Key Facts
- Co-CEO AmirAli Talasaz sold 9,023 shares at $168.20 for $1.52M on 2026-08-21
- Director Tariq Musa sold 116 shares at $156.45 for $18K on 2026-08-17
- Director Roberto Mignone exercised non-cash derivative options (264 shares at $0) on 2026-08-21
- Total cluster value of $1.54M is only 0.007% of GH's $22.9B market cap
- No open-market buying activity in the cluster
Financial Impact
$1.54M in total insider sales, representing 0.007% of market cap
Risk Factors
- Co-CEO selling could be perceived negatively by retail investors despite trivial size
- No insider buying to signal confidence at current $168 price level
Market Snapshot
Investment Themes
Documents Analyzed
This report is based on 1 SEC document filed with EDGAR.
| Document | Accession Number |
|---|---|
| CLUSTER Data (Synthetic) | cluster-GH-1787645320556 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Aug 24, 2026 5w ago | Insider Cluster | $163.18 $177.16 | ▲ +8.57% | ▲ +7.25% | $177.80 (+8.96%) |
Aug 13, 2026 7w ago | Insider Cluster | $157.21 $167.84 | ▲ +6.76% | ▲ +8.75% | $177.80 (+13.10%) |
Aug 13, 2026 7w ago | Insider Cluster | $157.21 $167.84 | ▲ +6.76% | ▲ +8.75% | $177.80 (+13.10%) |
Aug 11, 2026 7w ago | Insider Cluster | $165.11 $159.03 | ▼ −3.68% | ▼ −1.78% | $177.80 (+7.69%) |
Aug 11, 2026 7w ago | Insider Cluster | $165.11 $159.03 | ▼ −3.68% | ▼ −1.78% | $177.80 (+7.69%) |
Aug 6, 2026 8w ago | Insider Cluster | $168.48 $161.41 | ▼ −4.20% | ▼ −3.80% | $177.80 (+5.53%) |
Jul 30, 2026 9w ago | S-3ASR | $161.99 $161.49 | ▼ −0.31% | ▼ −3.29% | $177.80 (+9.76%) |
Jun 30, 2026 13w ago | Insider Cluster | $170.77 $144.07 | ▼ −15.64% | ▼ −13.45% | $177.80 (+4.12%) |
Jun 22, 2026 14w ago | 144 | $130.83 $148.07 | ▲ +13.18% | ▲ +12.02% | $177.80 (+35.90%) |
Jun 16, 2026 15w ago | Court Ruling | $127.34 $160.11 | ▼ −25.73% | ▼ −25.53% | $177.80 (−39.63%) |
US Market Status
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