The insider selling is concentrated in a single director (Mahoney) and is not a broad C-suite signal. Monitor for any upcoming 8-K or press release that could explain the selling, but the cluster alone does not warrant a bearish stance. The stock's strong momentum and 83% analyst bullish consensus suggest the selling is likely personal portfolio management.
Price Chart
Executive Summary
A cluster of insider selling at Corcept Therapeutics, led by Director David Mahoney ($12.2M) and CBO Gary Robb ($1.16M), totaling ~$14.8M in open-market sales over a 7-day window. While the dollar amount is significant, the selling is concentrated in a single director (Mahoney) and is likely diversification-driven given the stock's strong performance and $12.9B market cap. The cluster does not signal a material bearish view from the C-suite, as the only C-suite seller (CBO) sold a modest amount relative to market cap (~0.009%).
Key Financial Metrics
Key Facts
- Director David Mahoney sold 103,606 shares for ~$12.2M across four open-market transactions on 2026-08-18.
- CBO Gary Robb sold 10,000 shares for ~$1.16M on 2026-08-17.
- Total insider selling in the cluster is ~$14.8M, representing ~0.11% of CORT's $12.9B market cap.
- The cluster includes one non-cash gift (125 shares by Robb) with no economic value.
- No C-suite CEO or CFO selling; the only C-suite seller (CBO) sold a modest amount.
Financial Impact
Total insider selling of ~$14.8M, or ~0.11% of market cap — modest relative to company size.
Risk Factors
- Director Mahoney's large sale could indicate private concerns not yet public.
- The cluster occurs near all-time highs, raising the risk of a pullback if broader sentiment shifts.
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-1787292149857 |
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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