The insider selling cluster is small relative to market cap and includes derivative exercises, suggesting routine portfolio diversification rather than a bearish signal. Monitor for any upcoming corporate events (earnings, pipeline updates) that may have triggered these sales, but no immediate action warranted.
Price Chart
Executive Summary
Three Corcept insiders, including Chief Development Officer William Guyer, sold a total of $3.81M in open-market sales over a one-week window. The cluster includes Guyer's derivative exercises and sales, with the largest single sale by Sean Maduck at $2.33M. While the dollar amount is modest relative to CORT's $12.1B market cap (0.03%), the cluster includes a C-suite officer and follows a period of strong stock performance, warranting attention but not alarm.
Key Financial Metrics
Key Facts
- Three insiders sold shares totaling $3.81M in open-market transactions from Aug 3-10, 2026.
- Chief Development Officer William Guyer sold 16,300 shares for ~$1.85M, including shares from derivative exercises.
- Sean Maduck sold 20,300 shares for $2.33M on Aug 3, the largest single transaction.
- Total open-market sales represent ~0.03% of CORT's $12.1B market cap, well below the 0.1% materiality threshold.
- The cluster includes derivative exercises (non-cash) by Guyer and Maduck, which are routine and not economically meaningful.
Financial Impact
Total open-market sales of $3.81M, representing ~0.03% of market cap
Risk Factors
- Insider selling could accelerate if stock continues to appreciate, creating overhang
- No C-suite buying to offset selling pattern
Market Snapshot
Investment Themes
Documents Analyzed
This report is based on 1 SEC document filed with EDGAR.
| Document | Accession Number |
|---|---|
| CLUSTER Data (Synthetic) | cluster-CORT-1786608196590 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Aug 28, 2026 5w ago | Insider Cluster | $113.88 $115.63 | ▲ +1.54% | ▲ +1.28% | $116.49 (+2.29%) |
Aug 28, 2026 5w ago | Insider Cluster | $113.88 $116.10 | ▲ +1.95% | ▲ +1.44% | $116.49 (+2.29%) |
Aug 27, 2026 5w ago | Insider Cluster | $116.93 $117.00 | ▲ +0.06% | ▲ +0.16% | $116.49 (−0.38%) |
Aug 20, 2026 6w ago | Insider Cluster | $121.05 $114.86 | ▼ −5.11% | ▼ −5.11% | $116.49 (−3.77%) |
Aug 18, 2026 6w ago | Insider Cluster | $118.10 $111.85 | ▲ +5.29% | ▲ +4.30% | $116.49 (+1.36%) |
Aug 12, 2026 7w ago | Insider Cluster | $112.18 $114.92 | ▲ +2.44% | ▲ +4.34% | $116.49 (+3.84%) |
Aug 12, 2026 7w ago | Insider Cluster | $112.18 $114.92 | ▲ +2.44% | ▲ +4.34% | $116.49 (+3.84%) |
Aug 6, 2026 8w ago | Insider Cluster | $110.77 $111.62 | ▲ +0.77% | ▲ +1.16% | $116.49 (+5.16%) |
Aug 5, 2026 8w ago | Insider Cluster | $107.95 $112.80 | ▲ +4.49% | ▲ +3.89% | $116.49 (+7.91%) |
Jul 23, 2026 10w ago | Court Ruling | $96.66 $121.05 | ▲ +25.23% | ▲ +21.92% | $116.49 (+20.52%) |
US Market Status
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