REPLIGEN CORP — Director's Dealing 2023

May 5, 2023

SEC Form 3/A — Form 3/A

Issuer: REPLIGEN CORP (RGEN)
CIK: 0000730272
Period of Report: 2023-02-06

Reporting Person: Madaus Martin D (Director)

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	2	Indirect

Footnotes

F1: Shares held by a revocable trust of which the Reporting Person's spouse serves as trustee. Such shares were unintentionally omitted from the Form 3 originally filed by the Reporting Person on February 8, 2023, and were also omitted from a Form 4 subsequently filed by the Reporting Person on the same date. The Reporting Person disclaims beneficial ownership of such shares for purposes of Section 16 except to the extent of his pecuniary interest therein, if any, and this report shall not be deemed an admission that such shares are beneficially owned by him for Section 16 or any other purpose.