The insider selling is routine and non-informative given the small dollar amounts relative to market cap and the presence of non-cash derivative exercises. No bearish signal is warranted. Monitor upcoming earnings (next 10-Q) for any guidance changes, but this cluster alone does not indicate material negative news.
Price Chart
Executive Summary
A cluster of insider selling at Neurocrine Biosciences over the past week totals $4.53M in open-market sales by four officers/directors, including the Chief Scientific Officer and Chief Human Resources Officer. The selling is modest relative to the $16.4B market cap (0.028%) and includes non-cash derivative exercises and gifts, suggesting liquidity-driven rather than informational selling. The cluster is not amplified by the proportionality check, and the historical calibration for this segment shows negative average alpha at T+20, warranting a neutral stance.
Key Financial Metrics
Key Facts
- Four insiders sold a total of $4.53M in open-market sales over 7 days (May 29–June 5, 2026).
- Sales represent ~0.028% of NBIX's $16.4B market cap — well below the 0.1% materiality threshold.
- Director Sherwin exercised 30,000 options (non-cash) and sold 7,883 shares for $1.29M; the exercise price was $53.64, indicating routine option monetization.
- Chief Scientific Officer Onyia gifted 2,441 shares (non-cash) — no economic signal.
- No 10b5-1 plan disclosures are present, but the pattern of option exercises and gifts alongside sales is consistent with routine portfolio management.
- Historical calibration shows this segment has a negative average alpha of -2.26% at T+20, and the cluster's small size does not overcome that baseline.
Financial Impact
Total insider sales of $4.53M, or 0.028% of market cap — immaterial relative to company size.
Risk Factors
- Insider selling could accelerate if the stock continues to trade near recent highs, but current volume is immaterial.
- No specific catalyst identified; the cluster is not predictive of near-term stock movement.
Market Snapshot
Investment Themes
Documents Analyzed
This report is based on 1 SEC document filed with EDGAR.
| Document | Accession Number |
|---|---|
| CLUSTER Data (Synthetic) | cluster-NBIX-1781041273939 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Sep 15, 2026 16d ago | Insider Cluster | $149.50 $139.49 | ▼ −6.70% | ▼ −9.26% | $143.18 (−4.23%) |
Jul 13, 2026 11w ago | Insider Cluster | $174.10 $170.88 | ▼ −1.85% | ▼ −1.06% | $143.18 (−17.76%) |
Jul 9, 2026 12w ago | Press Release | $177.11 $171.55 | ▼ −3.14% | ▼ −2.58% | $143.18 (−19.16%) |
Jun 9, 2026 16w ago | Insider Cluster | $160.86 $156.42 | ▼ −2.76% | ▼ −6.19% | $143.18 (−10.99%) |
Jun 8, 2026 16w ago | Insider Cluster | $165.24 $159.51 | ▼ −3.47% | ▼ −5.88% | $143.18 (−13.35%) |
Jun 8, 2026 16w ago | Insider Cluster | $165.24 $159.51 | ▼ −3.47% | ▼ −5.88% | $143.18 (−13.35%) |
Jun 4, 2026 17w ago | Insider Cluster | $163.88 $159.76 | ▼ −2.51% | ▼ −3.08% | $143.18 (−12.63%) |
Jun 2, 2026 17w ago | Insider Cluster | $164.23 $160.86 | ▼ −2.05% | ▲ +1.77% | $143.18 (−12.81%) |
Jun 2, 2026 17w ago | Insider Cluster | $164.23 $160.86 | ▼ −2.05% | ▲ +1.77% | $143.18 (−12.81%) |
Jun 2, 2026 17w ago | Insider Cluster | $164.23 $160.86 | ▼ −2.05% | ▲ +1.77% | $143.18 (−12.81%) |
US Market Status
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