REPLIGEN CORP — Director's Dealing 2014

Jul 15, 2014

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: REPLIGEN CORP (RGEN)
CIK: 0000730272
Period of Report: 2014-07-14

Reporting Person: Snodgres Jon (CFO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2014-07-14	Common Stock	A	5000	—	Acquired	5000	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2014-07-14	Stock Option (Right to Buy)	$24.5	A	10000	Acquired	2024-07-14	Common Stock (10000)	Direct

Footnotes

F1: Mr. Snodgres was awarded 5,000 Restricted Stock Units. Each Restricted Stock Unit represents a contingent right to receive one share of Repligen Corporation's Common Stock. 1,000 Restricted Stock Units vest on each of the following dates: 7/14/2015, 7/14/2016, 7/14/2017, 7/14/2018 and 7/14/2019. The Restricted Stock Units may be settled only by delivering shares of Repligen Corporation's Common Stock, and thus, the grant is being reported in Table 1 as allowed per SEC guidance.

F2: 2,000 shares vest and become exercisable on each of the following dates: 7/14/2015, 7/14/2016, 7/14/2017, 7/14/2018 and 7/14/2019.