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REPLIGEN CORP Director's Dealing 2010

Sep 28, 2010

30826_dirs_2010-09-28_ffadc540-ae92-4ec4-bbe2-54ddc27983e7.zip

Director's Dealing

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SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: REPLIGEN CORP (RGEN)
CIK: 0000730272
Period of Report: 2010-09-16

Reporting Person: Goldberg Alfred Lewis (Director)

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2010-09-16	Stock Option (Right to Buy)	$3.30	A	20000	Acquired	2020-09-16	Common Stock (20000)	Direct

Footnotes

F1: Award represents Annual Board Options issued each September to each non-employee director. Award vests in full one year from grant date on September 16, 2011.