CERUS CORP — Director's Dealing 2011

May 14, 2011

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: CERUS CORP (CERS)
CIK: 0001020214
Period of Report: 2011-05-11

Reporting Person: CORASH LAURENCE M (Director, Chief Medical Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2011-05-11	Common Stock	P	20000	$3.0075	Acquired	461700	Direct
2011-05-12	Common Stock	P	20000	$2.9373	Acquired	481700	Direct
2011-05-13	Common Stock	P	20000	$2.8722	Acquired	501700	Direct

Footnotes

F1: The price range is between $2.99 and $3.03 per share.

F2: The price range is between $2.91 and $2.94 per share.

F3: The price range is between $2.86 and $2.89 per share.