REPLIGEN CORP — Director's Dealing 2014

Nov 18, 2014

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: REPLIGEN CORP (RGEN)
CIK: 0000730272
Period of Report: 2014-11-14

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

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2014-11-14	Common Stock	M	10000	$3.33	Acquired	549477	Direct
2014-11-14	Common Stock	F	1430	$23.30	Disposed	548047	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2014-11-14	Stock Option (Right to Buy)	$3.33	M	10000	Disposed	2020-07-15	Common Stock (10000)	Direct

Footnotes

F1: Payment made via forfeiture of 1,430 shares of Common Stock valued at the closing price of $23.30 on November 14, 2014.