4processed

Form 4 — Insider Transaction

REPLIGEN CORP(RGEN)

Filing Date

May 14, 2026

Accepted

May 14, 2026

Accession No.

0001193125-26-228884

CIK

0000730272

Insider Transactions

InsiderTitleTypeSharesPriceValueOwned AfterSecurityDate
DAWES KAREN AOther995$092.8KCommon StockMay 14, 2026
DAWES KAREN AOther2.2K$02.2KStock Option (Right to Buy)May 14, 2026