REPLIGEN CORP — Director's Dealing 2015

Mar 23, 2015

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: REPLIGEN CORP (RGEN)
CIK: 0000730272
Period of Report: 2015-03-20

Reporting Person: HERLIHY WALTER C (Director, PRESIDENT AND CEO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2015-03-20	Common Stock	S	850	$32.505	Disposed	446116	Direct
2015-03-23	Common Stock	S	23686	$31.756	Disposed	422430	Direct

Footnotes

F1: $32.505 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $32.50 to $32.55, 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 sold at each separate price within the range.

F2: $31.756 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $31.72 to $31.81, 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 sold at each separate price within the range.