🕵️ Corcept Therapeutics Inc ($CORT)
SEC insider & ownership activity, last 12 months · CIK 1088856 · every row links its SEC filing
Over the last 12 months insiders sold $102.9M against $3.3M of open-market buying. Maduck Sean sold $23.3M through a 10b5-1 trading plan in 20 lots (Oct–Sep). BlackRock, Inc. trimmed 12.7% → 10.9%; Ingalls & Snyder LLC trimmed 7.8% → 6.8%. No red-flag 8-Ks in the window.
Monthly net open-market insider flow, last 12 months (up = net buying)
Insider flow
1 buyer, $3.3M (2 lots) · 11 sellers, $102.9M (109 lots)
| Insider | Buys | Bought | Sells | Sold | Last |
|---|---|---|---|---|---|
| Maduck Sean | 0 | – | 20 | $23.3M | Sep 1, 2026 |
| Mokari Atabak | 0 | – | 22 | $18.7M | Jul 30, 2026 |
| Guyer William | 0 | – | 20 | $15.3M | Aug 10, 2026 |
| David L. Mahoney | 0 | – | 5 | $13.9M | Aug 18, 2026 |
| Joseph K. Belanoff | 0 | – | 11 | $13.8M | Jun 1, 2026 |
| Vieira Roberto Wandenkolk | 0 | – | 7 | $6.5M | Sep 2, 2026 |
| James N. Wilson | 0 | – | 12 | $3.9M | Sep 15, 2026 |
| Baker G. Leonard Jr. | 2 | $3.3M | 0 | – | Mar 17, 2026 |
| Park Kimberly | 0 | – | 1 | $3.3M | Aug 26, 2026 |
| Lyon Joseph Douglas | 0 | – | 9 | $2.8M | Sep 14, 2026 |
| Robb Gary Charles | 0 | – | 1 | $1.2M | Aug 17, 2026 |
| Daniel N. Swisher Jr. | 0 | – | 1 | $193K | Oct 10, 2025 |
5%+ holders
| Holder | Stake | Class | Schedule | Event | |
|---|---|---|---|---|---|
| BlackRock, Inc. | 10.9% | 13G | Jul 17, 2025 | filing ↗ | |
| Ingalls & Snyder LLC | 6.8% | 13G | Apr 21, 2026 | filing ↗ | |
| Joseph K. Belanoff | 6.3% | 13G | Feb 14, 2025 | filing ↗ |
Planned insider sales (Form 144)
| Seller | Planned | Approx. sale date | |
|---|---|---|---|
| James N. Wilson | $3.3M | Sep 15, 2026 | filing ↗ |
| Lyon Joseph Douglas | $1.1M | Sep 14, 2026 | filing ↗ |
| Vieira Roberto Wandenkolk | $8.3M | Sep 2, 2026 | filing ↗ |
| Kimberly Park | $3.3M | Aug 26, 2026 | filing ↗ |
| Maduck Sean | $22.0M | Aug 25, 2026 | filing ↗ |
| David L. Mahoney | $12.2M | Aug 18, 2026 | filing ↗ |
| Robb Gary Charles | $1.2M | Aug 17, 2026 | filing ↗ |
| Guyer William | $2.3M | Aug 4, 2026 | filing ↗ |
| Lyon Joseph Douglas | $176K | Aug 3, 2026 | filing ↗ |
| Mokari Atabak | $4.6M | Jul 30, 2026 | filing ↗ |
| Guyer William | $1.9M | Jul 7, 2026 | filing ↗ |
| David L. Mahoney | $1.7M | Jun 16, 2026 | filing ↗ |
| James N. Wilson | $2.5M | Jun 16, 2026 | filing ↗ |
| Guyer William | $1.4M | Jun 2, 2026 | filing ↗ |
| Joseph K. Belanoff | $892K | Jun 1, 2026 | filing ↗ |
| Mokari Atabak | $11.2M | Jun 1, 2026 | filing ↗ |
| Maduck Sean | $9.8M | May 27, 2026 | filing ↗ |
| Lyon Joseph Douglas | $291K | May 20, 2026 | filing ↗ |
| Guyer William | $1.0M | May 5, 2026 | filing ↗ |
| Joseph K. Belanoff | $1.9M | May 1, 2026 | filing ↗ |
| Guyer William | $817K | Apr 7, 2026 | filing ↗ |
| Joseph K. Belanoff | $1.4M | Mar 25, 2026 | filing ↗ |
| Guyer William | $706K | Mar 4, 2026 | filing ↗ |
| Guyer William | $814K | Feb 3, 2026 | filing ↗ |
| Guyer William | $699K | Jan 6, 2026 | filing ↗ |
| Guyer William | $1.6M | Dec 2, 2025 | filing ↗ |
| Joseph K. Belanoff | $3.2M | Dec 1, 2025 | filing ↗ |
| Maduck Sean | $1.6M | Dec 1, 2025 | filing ↗ |
| Lyon Joseph Douglas | $397K | Dec 1, 2025 | filing ↗ |
| Guyer William | $364K | Nov 25, 2025 | filing ↗ |
| Guyer William | $1.4M | Nov 5, 2025 | filing ↗ |
| Joseph K. Belanoff | $2.9M | Nov 3, 2025 | filing ↗ |
| Lyon Joseph Douglas | $367K | Nov 3, 2025 | filing ↗ |
| Maduck Sean | $1.5M | Nov 3, 2025 | filing ↗ |
| Daniel N. Swisher Jr. | $193K | Oct 10, 2025 | filing ↗ |
| Guyer William | $1.8M | Oct 7, 2025 | filing ↗ |
| Joseph K. Belanoff | $3.3M | Oct 1, 2025 | filing ↗ |
| Maduck Sean | $1.7M | Oct 1, 2025 | filing ↗ |
| Lyon Joseph Douglas | $416K | Oct 1, 2025 | filing ↗ |
Material events (8-K)
| Item | Event date | |
|---|---|---|
| Earnings (2.02) | Jul 29, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Jul 29, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jul 29, 2026 | filing ↗ |
| Other events (8.01) | Jun 17, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jun 17, 2026 | filing ↗ |
| Officer/director changes (5.02) | May 21, 2026 | filing ↗ |
| Shareholder vote (5.07) | May 21, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | May 21, 2026 | filing ↗ |
| Other events (8.01) | May 19, 2026 | filing ↗ |
| Earnings (2.02) | Apr 30, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Apr 30, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Apr 30, 2026 | filing ↗ |
| Other events (8.01) | Mar 25, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Mar 25, 2026 | filing ↗ |
| Earnings (2.02) | Feb 24, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Feb 24, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Feb 24, 2026 | filing ↗ |
| Other events (8.01) | Feb 19, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Feb 19, 2026 | filing ↗ |
| Other events (8.01) | Jan 22, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jan 22, 2026 | filing ↗ |
| Other events (8.01) | Dec 31, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Dec 31, 2025 | filing ↗ |
| Earnings (2.02) | Nov 4, 2025 | filing ↗ |
| Reg FD disclosure (7.01) | Nov 4, 2025 | filing ↗ |
| Agreement terminated (1.02) | Oct 10, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Oct 10, 2025 | filing ↗ |
| Officer/director changes (5.02) | Oct 6, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Oct 6, 2025 | filing ↗ |