REPLIGEN CORP — Director's Dealing 2025

Aug 12, 2025

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: REPLIGEN CORP (RGEN)
CIK: 0000730272
Period of Report: 2025-08-08

Reporting Person: Madaus Martin D (N/A)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-08-08	Common Stock	P	1800	$112.1280	Acquired	1800	Indirect

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	5586	Direct
Common Stock	11	Indirect

Footnotes

F1: The price reported is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $111.72 to $112.35, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range.