This cluster is too small relative to market cap to warrant a trading signal. Monitor for any larger insider sales or changes in institutional ownership (BlackRock, State Street) that could indicate a shift in sentiment. The historical underperformance of bullish calls on ISRG suggests caution on any positive read-through.
Price Chart
Executive Summary
Three insiders at Intuitive Surgical sold shares totaling $4.18M in a cluster from Aug 4-11, 2026. Director Gary Guthart led with a $4M open-market sale at $400/share, while EVP Gary Loeb and Director Amy Ladd sold smaller amounts. The total value is only ~0.003% of ISRG's $141.7B market cap, making this a trivial, routine cluster with no material informational content. Historical calibration shows past bullish/long calls on ISRG have underperformed significantly (avg T+20 alpha -8%), reinforcing a neutral stance on this low-impact event.
Key Financial Metrics
Key Facts
- Three insiders sold shares totaling $4.18M in a 7-day window (Aug 4-11, 2026).
- Director Gary Guthart sold 10,000 shares for $4M at $400/share on Aug 11.
- EVP & Chief Legal Gary Loeb sold 400 shares for $152K at $379 on Aug 10.
- Director Amy Ladd sold 72 shares for $28K at $393.10 on Aug 11.
- Total cluster value of $4.18M is only ~0.003% of ISRG's $141.7B market cap.
- Historical calibration shows past bullish/long calls on ISRG have averaged -8% alpha at T+20, supporting a neutral stance.
Financial Impact
Total insider sales of $4.18M represent ~0.003% of market cap — trivial and routine.
Risk Factors
- Insider sales are routine and liquidity-driven; no bearish signal from this cluster.
- Historical calibration shows past bullish calls on ISRG have underperformed by -8% alpha at T+20.
- No cross-filing context (earnings, M&A, or restructuring) to amplify this cluster's significance.
Market Snapshot
Investment Themes
Documents Analyzed
This report is based on 1 SEC document filed with EDGAR.
| Document | Accession Number |
|---|---|
| CLUSTER Data (Synthetic) | cluster-ISRG-1786608130971 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Oct 7, 2026 11d ago | ANALYST-UPGRADE | $414.52 $422.06 | ▲ +1.82% | ▲ +1.72% | $426.70 (+2.94%) |
Sep 16, 2026 4w ago | Insider Cluster | $382.29 $398.30 | ▲ +4.19% | ▲ +1.62% | $426.70 (+11.62%) |
Aug 19, 2026 8w ago | Insider Cluster | $374.48 $367.07 | ▼ −1.98% | ▼ −3.09% | $426.70 (+13.94%) |
Aug 13, 2026 9w ago | Court Ruling | $401.27 $374.48 | ▲ +6.68% | ▲ +4.71% | $426.70 (−6.34%) |
Aug 12, 2026 9w ago | ANALYST-UPGRADE | $401.27 $397.72 | ▼ −0.88% | ▼ −0.44% | $426.70 (+6.34%) |
Aug 12, 2026 9w ago | Insider Cluster | $401.27 $397.72 | ▼ −0.88% | ▼ −0.44% | $426.70 (+6.34%) |
Aug 11, 2026 9w ago | Insider Cluster | $401.27 $397.72 | ▼ −0.88% | ▼ −0.44% | $426.70 (+6.34%) |
Jul 30, 2026 11w ago | ANALYST-DOWNGRADE | $352.97 $373.71 | ▲ +5.88% | ▲ +2.25% | $426.70 (+20.89%) |
Jul 16, 2026 13w ago | Press Release | $345.42 $332.02 | ▼ −3.88% | ▼ −3.19% | $426.70 (+23.53%) |
Jul 9, 2026 14w ago | ANALYST-UPGRADE | $411.55 $402.33 | ▼ −2.24% | ▼ −2.11% | $426.70 (+3.68%) |
US Market Status
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