Happel David (CIK 1623567) reported 4 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-02-20). Recent activity: Buy SGMT (128,000 shares), Sell SGMT (12,101 shares), Sell SGMT (65,478 shares), Buy SGMT (116,000 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-02-20 | Sagimet Biosciences Inc. (SGMT) | President & CEO | Buy | 128,000 | $0 |
| 2026-02-12 | Sagimet Biosciences Inc. (SGMT) | President & CEO | Sell | 12,101 | $64,861 |
| 2025-07-23 | Sagimet Biosciences Inc. (SGMT) | President & CEO | Sell | 65,478 | $597,814 |
| 2025-02-07 | Sagimet Biosciences Inc. (SGMT) | President & CEO | Buy | 116,000 | $0 |
Source: SEC Form 4 filings · as of 2026-02-20