The CTO's large open-market sale without a disclosed plan is the most significant signal. Monitor for upcoming earnings or material news that may have prompted the selling. If further insider sales emerge, the bearish signal strengthens.
Price Chart
Executive Summary
A cluster of insider sales at Guardant Health, totaling $1.73M over a one-week window, was led by the Chief Technology Officer ($1.38M) and included three directors. The sales are open-market and not clearly plan-driven, signaling potential caution from senior insiders ahead of upcoming events.
Key Financial Metrics
Key Facts
- CTO Darya Chudova sold 7,700 shares for $1.38M on 2026-09-15.
- Three directors sold a combined $357K in open-market sales on 2026-09-16.
- Total insider sales of $1.73M represent ~0.53% of GH's market cap (~$326M).
- No 10b5-1 plan indication was provided for any of the sales.
- CIO Kumud Kalia sold $632K on 2026-09-11, just before the cluster window.
Financial Impact
Sales of $1.73M represent ~0.53% of market cap, a modest but notable insider divestiture.
Risk Factors
- Insider sales could be for personal liquidity or diversification, reducing signal reliability.
- The company's market cap is small (~$326M), making the proportional impact of these sales more notable.
Investment Themes
Documents Analyzed
This report is based on 1 SEC document filed with EDGAR.
| Document | Accession Number |
|---|---|
| CLUSTER Data (Synthetic) | cluster-GH-1790144425552 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Oct 21, 2026 6d ago | Institutional Cluster | $162.94 | awaiting T+20 | — | $178.06 (+9.28%) |
Oct 14, 2026 13d ago | 144 | $165.88 | awaiting T+20 | — | $178.06 (+7.34%) |
Sep 17, 2026 5w ago | Insider Cluster | $179.38 $158.60 | ▲ +11.58% | ▲ +11.79% | $178.06 (+0.74%) |
Sep 17, 2026 5w ago | Insider Cluster | $179.38 $158.60 | ▲ +11.58% | ▲ +11.79% | $178.06 (+0.74%) |
Sep 17, 2026 5w ago | Insider Cluster | $179.38 $158.60 | ▼ −11.58% | ▼ −11.79% | $178.06 (−0.74%) |
Aug 24, 2026 9w ago | Insider Cluster | $164.92 $176.31 | ▲ +6.91% | ▲ +6.66% | $178.06 (+7.97%) |
Aug 13, 2026 10w ago | Insider Cluster | $157.21 $167.84 | ▲ +6.76% | ▲ +8.75% | $178.06 (+13.26%) |
Aug 13, 2026 10w ago | Insider Cluster | $157.21 $167.84 | ▲ +6.76% | ▲ +8.75% | $178.06 (+13.26%) |
Aug 11, 2026 11w ago | Insider Cluster | $165.11 $159.03 | ▼ −3.68% | ▼ −1.78% | $178.06 (+7.84%) |
Aug 11, 2026 11w ago | Insider Cluster | $165.11 $159.03 | ▼ −3.68% | ▼ −1.78% | $178.06 (+7.84%) |
US Market Status
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