Glenn P. Muir - 16 Dec 2025 Form 4 Insider Report for REPLIGEN CORP (RGEN)

Role
Director
Signature
/s/ Jennifer Carmichael (Attorney in Fact)
Issuer symbol
RGEN
Transactions as of
16 Dec 2025
Net transactions value
+$87,920
Form type
4
Filing time
17 Dec 2025, 16:30:06 UTC
Previous filing
22 Oct 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
MUIR GLENN P Director C/O REPLIGEN CORPORATION, 41 SEYON ST., BLDG 1, STE 100, WALTHAM /s/ Jennifer Carmichael (Attorney in Fact) 17 Dec 2025 0001181190

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction RGEN Common Stock Options Exercise $87,920 +3,366 +10% $26.12 36,622 16 Dec 2025 Direct

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction RGEN Stock Option (Right to Buy) Options Exercise $0 +3,366 $0.000000 3,366 16 Dec 2025 Common Stock 3,366 $26.12 Direct F1
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 This option is fully vested and exercisable.