| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Hunt Anthony | Director | C/O REPLIGEN CORPORATION, 41 SEYON ST., BLDG 1, STE 100, WALTHAM | /s/ Jennifer Carmichael (Attorney in Fact) | 08 Dec 2025 | 0001606030 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | RGEN | Common Stock | Other | -2,000 | -2% | 98,959 | 04 Dec 2025 | Direct | F1 |
| Id | Content |
|---|---|
| F1 | Represents a transfer of shares for which the Reporting Person is a joint tenant with right of survivorship. |