The cluster is too small relative to market cap to be a meaningful bearish signal. However, the concentration of C-suite selling near the $320+ level suggests insiders may view the current valuation as full. Monitor for any 8-K filings or earnings pre-announcements in the next 30 days that could explain the timing. The stock's 87% analyst bullish rating and strong institutional ownership (JPMorgan $3.5B, BlackRock $3.0B) provide a counterweight.
Price Chart
Executive Summary
Seven Natera insiders, including the CEO, CFO, Executive Chairman, and President of Clinical Diagnostics, sold a total of $3.4M in shares over a one-week window. While the dollar amount is modest relative to Natera's $44.8B market cap (0.008%), the cluster includes multiple C-suite executives selling near the stock's highs, which warrants attention. The sales appear to be a mix of routine tax-withholding dispositions and open-market sales, with no clear 10b5-1 pattern, reducing the bearish signal strength.
Key Financial Metrics
Key Facts
- Seven insiders sold shares totaling $3.4M between Aug 3-10, 2026
- Executive Chairman Matthew Rabinowitz sold $642K at $320.90
- Director Jonathan Sheena sold $1.95M at $325.32
- CEO Steven Chapman sold $178K at $263.86
- CFO Michael Brophy sold $131K at $274.22
- Total sales represent ~0.008% of Natera's $44.8B market cap
- No single insider sold more than 0.004% of their likely holdings
Financial Impact
Total insider sales of $3.4M, or 0.008% of market cap — trivial relative to company size
Risk Factors
- Insiders selling near all-time highs could indicate peak valuation concerns
- No 10b5-1 plans disclosed for the largest sales, raising timing questions
- Historical calibration shows cluster reports on NTRA have a 43% win rate at T+20, suggesting limited predictive power
Market Snapshot
Investment Themes
Documents Analyzed
This report is based on 1 SEC document filed with EDGAR.
| Document | Accession Number |
|---|---|
| CLUSTER Data (Synthetic) | cluster-NTRA-1786757758067 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Sep 4, 2026 28d ago | Insider Cluster | $328.18 $341.79 | ▲ +4.15% | ▲ +5.36% | $410.35 (+25.04%) |
Aug 29, 2026 4w ago | Insider Cluster | $321.96 $328.59 | ▼ −2.06% | ▼ −2.20% | $410.35 (−27.45%) |
Aug 15, 2026 6w ago | Insider Cluster | $314.18 $327.72 | ▲ +4.31% | ▲ +5.50% | $410.35 (+30.61%) |
Aug 8, 2026 7w ago | Insider Cluster | $318.35 $314.18 | ▼ −1.31% | ▼ −1.26% | $410.35 (+28.90%) |
Aug 6, 2026 8w ago | Insider Cluster | $265.38 $310.78 | ▼ −17.11% | ▼ −15.89% | $410.35 (−54.63%) |
Jul 30, 2026 9w ago | Insider Cluster | $269.66 $265.38 | ▼ −1.59% | ▼ −5.21% | $410.35 (+52.17%) |
Jul 18, 2026 10w ago | Insider Cluster | $262.63 $261.99 | ▼ −0.24% | ▲ +0.18% | $410.35 (+56.25%) |
Jul 16, 2026 11w ago | Insider Cluster | $269.83 $264.69 | ▼ −1.90% | ▼ −0.23% | $410.35 (+52.08%) |
Jul 9, 2026 12w ago | Insider Cluster | $281.85 $269.83 | ▼ −4.26% | ▼ −4.13% | $410.35 (+45.59%) |
Jul 7, 2026 12w ago | Insider Cluster | $281.27 $272.66 | ▼ −3.06% | ▼ −3.61% | $410.35 (+45.89%) |
US Market Status
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