X0303 4 2009-04-30 0 0001037760 CEPHEID CPHD 0001189847 KEPNER CRISTINA C/O CEPHEID 904 CARIBBEAN DRIVE SUNNYVALE CA 94089 1 0 0 0 Common Stock 2009-04-30 4 P 0 25000 10.0530 A 120232 D Common Stock 35000 I By IRA Represents the aggregate of purchases effected on the same day at different prices. Represents the weighted average purchase price per share. The shares were purchased at prices ranging from $9.96 to $10.14 per share. Full information regarding the number of shares purchased at each separate price shall be provided upon request to the staff of the U.S. Securities and Exchange Commission, the Issuer, or a security holder of the Issuer. /s/ Cristina Kepner by Joseph H. Smith, Attorney-in-Fact 2009-04-30