Douglass Brian Robb (CIK 2104618) reported 3 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-05-08). Recent activity: Sell RGEN (334 shares), Sell RGEN (221 shares), Buy RGEN (2,288 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-05-08 | REPLIGEN CORP (RGEN) | CHIEF PRODUCT OFFICER | Sell | 334 | $42,228 |
| 2026-03-03 | REPLIGEN CORP (RGEN) | CHIEF PRODUCT OFFICER | Sell | 221 | $27,618 |
| 2026-01-12 | REPLIGEN CORP (RGEN) | CHIEF PRODUCT OFFICER | Buy | 2,288 | $0 |
Source: SEC Form 4 filings · as of 2026-05-08