William Guyer is Chief Development Officer at CORCEPT THERAPEUTICS INC (CORT). They have made 2 open-market trades across 1 company since 2023, most recently 2026-08-10.
CIK 0001879013
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
0 open-market purchases, against 2 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| CORT | 3,985 | $438K |
Shares reported on the most recent Form 4, priced at the 2026-08-12 close.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| CORT | SELL · 10b5-1 | 2026-08-10 | 2026-08-12 | $113.43 | $1.8M | +10.6% | +1.2% | — |
| CORT | SELL · 10b5-1 | 2026-07-07 | 2026-07-08 | $93.13 | $1.9M | -1.1% | +19.7% | +29.3% |
| CORT | SELL · 10b5-1 | 2026-06-02 | 2026-06-04 | $70.60 | $1.4M | +12.4% | +22.9% | +48.3% |
| CORT | SELL · 10b5-1 | 2026-05-05 | 2026-05-07 | $51.83 | $1.0M | +13.5% | +42.8% | +115.7% |
| CORT | SELL · 10b5-1 | 2026-04-07 | 2026-04-08 | $40.97 | $819K | +11.0% | +25.3% | +125.3% |
| CORT | SELL · 10b5-1 | 2026-03-20 | 2026-03-24 | $36.01 | $424K | +19.6% | +32.0% | +133.4% |
| CORT | SELL · 10b5-1 | 2026-03-04 | 2026-03-06 | $35.99 | $296K | -0.8% | +21.7% | +123.1% |
| CORT | SELL | 2026-02-03 | 2026-02-05 | $40.87 | $817K | +2.1% | -12.9% | +33.7% |
| CORT | SELL · 10b5-1 | 2026-01-06 | 2026-01-08 | $35.18 | $704K | -1.7% | +11.8% | +13.3% |
| CORT | SELL · 10b5-1 | 2025-12-02 | 2025-12-03 | $80.10 | $1.7M | +3.5% | -54.7% | -58.2% |
| CORT | SELL | 2025-11-25 | 2025-12-03 | $80.90 | $364K | +3.5% | -54.7% | -58.2% |
| CORT | SELL · 10b5-1 | 2025-11-05 | 2025-11-07 | $75.47 | $2.5M | +7.5% | +17.3% | -45.8% |
| CORT | SELL · 10b5-1 | 2025-10-07 | 2025-10-09 | $89.94 | $1.8M | -13.9% | -13.8% | -57.7% |
| CORT | SELL · 10b5-1 | 2025-09-02 | 2025-09-04 | $70.49 | $2.8M | +2.4% | +29.0% | +20.2% |
| CORT | SELL · 10b5-1 | 2025-08-08 | 2025-08-12 | $71.77 | $5.0M | -5.0% | +0.4% | +2.0% |
| CORT | SELL · 10b5-1 | 2025-08-05 | 2025-08-07 | $71.77 | $1K | -2.0% | -0.5% | +7.0% |
| CORT | SELL · 10b5-1 | 2025-07-17 | 2025-07-21 | $73.48 | $680K | -4.2% | +0.4% | +12.1% |
| CORT | SELL · 10b5-1 | 2025-07-01 | 2025-07-03 | $73.51 | $7K | +1.8% | +0.3% | +17.8% |
| CORT | SELL · 10b5-1 | 2025-06-10 | 2025-06-12 | $72.42 | $2.9M | +5.9% | +4.2% | +2.5% |
| CORT | SELL · 10b5-1 | 2025-05-16 | 2025-05-20 | $74.17 | $4.8M | -4.5% | -4.9% | -4.4% |
| CORT | SELL · 10b5-1 | 2025-05-06 | 2025-05-08 | $74.31 | $1.0M | +7.9% | -0.1% | -0.1% |
| CORT | SELL · 10b5-1 | 2025-04-01 | 2025-04-02 | $114.51 | $155K | -14.8% | -8.1% | -12.4% |
| CORT | SELL · 10b5-1 | 2025-03-04 | 2025-03-04 | $59.07 | $1.2M | -0.0% | +41.7% | +28.0% |
| CORT | SELL · 10b5-1 | 2024-11-01 | 2024-11-05 | $48.97 | $979K | -4.2% | +9.9% | +23.1% |
| CORT | SELL · 10b5-1 | 2024-10-01 | 2024-10-03 | $46.28 | $463K | +3.9% | +11.0% | +10.8% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.