This cluster is too small to warrant a trade. The Maduck sale is a routine option-exercise cash-out, and Mahoney's $48K sale is negligible. Monitor for any material insider buying or a larger cluster (>0.5% of market cap) before reading bearish signals. The strong historical positive drift on CORT reports suggests the stock has been resilient to insider selling patterns.
Price Chart
Executive Summary
Two Corcept Therapeutics insiders sold a total of ~$788K in shares over a week, with the bulk ($740K) from Sean Maduck (See Remarks) on August 25 following a derivative exercise. Director David Mahoney sold a small $48K lot on August 18. The total value is just 0.006% of Corcept's $12.6B market cap — a trivial amount that does not indicate a bearish signal. The cluster is a sell, but the dollar amount is immaterial relative to company size, and the Maduck sale appears to be a routine cash-out following option exercise, not an informed bearish bet. The historical performance on CORT reports shows strong positive drift (100% win rate at T+20), but this cluster is too small to drive a directional call. The cross-filing actuarial verdicts show multiple AMPLIFIER combos, but none apply here because the cluster value is below the materiality threshold. The 30-day prior insider activity shows $17.3M in sells, consistent with ongoing routine diversification. No material bearish read-through.
Key Financial Metrics
Key Facts
- Two insiders sold a combined ~$788K in CORT shares over 7 days
- Sean Maduck sold ~$740K on Aug 25 after exercising options at $11.35/share
- Director David Mahoney sold $48K on Aug 18
- Total cluster value is ~0.006% of CORT's $12.6B market cap — trivial
- Prior 30-day insider activity: $17.3M in sells across 7 transactions
Financial Impact
~$788K total insider sales, representing ~0.006% of market cap
Risk Factors
- Insider selling could accelerate if the stock continues to rally
- The 30-day prior selling pattern ($17.3M) is notable but still <0.2% of market cap — not yet a red flag
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-1787900602593 |
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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