CHESS ROBERT (CIK 1227886) reported 6 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-08-11). Recent activity: Buy TWST (18,417 shares), Sell TWST (18,417 shares), Buy TWST (10,000 shares), Sell TWST (10,000 shares), Sell TWST (2,184 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-08-11 | Twist Bioscience Corp (TWST) | Director | Buy | 18,417 | $218,978 |
| 2026-08-11 | Twist Bioscience Corp (TWST) | Director | Sell | 18,417 | $2.0M |
| 2026-03-19 | Twist Bioscience Corp (TWST) | Director | Buy | 10,000 | $118,900 |
| 2026-03-19 | Twist Bioscience Corp (TWST) | Director | Sell | 10,000 | $470,000 |
| 2026-02-18 | Twist Bioscience Corp (TWST) | Director | Sell | 2,184 | $105,400 |
| 2026-02-09 | Twist Bioscience Corp (TWST) | Director | Buy | 5,095 | $0 |
Source: SEC Form 4 filings · as of 2026-08-11