| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Garland Jason K | CFO | C/O REPLIGEN CORPORATION, 41 SEYON ST., BLDG 1, STE 100, WALTHAM | /s/ Jennifer Carmichael (Attorney in Fact) | 26 Sep 2025 | 0001754555 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | RGEN | Common Stock | Tax liability | $50,132 | -412 | -3% | $121.68 | 13,383 | 25 Sep 2025 | Direct | F1 |
| Id | Content |
|---|---|
| F1 | Represents the number of shares withheld by the Issuer to satisfy tax withholding obligations of the reporting person that arose upon the release of restricted stock units. |