X0303 4 2009-09-28 0 0001037760 CEPHEID CPHD 0001187325 GUTSHALL THOMAS L C/O CEPHEID 904 CARIBBEAN DRIVE SUNNYVALE CA 94089 1 0 0 0 Common Stock 2009-09-28 4 S 0 1000 13.727 D 907741 I By Trust Common Stock 6000 I By The Gutshall Family Fund Common Stock 87025 D The sales on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on February 27, 2009. Represents the aggregate of sales effected on the same day at different prices pursuant to the plan in footnote (1). Represents the weighted average sales price per share. The shares sold at prices ranging from $13.70 to $13.74 per share. Full information regarding the number of shares sold 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. All shares are held by the Gutshall Family Trust DTD 3-7-90, of which the Reporting Person and his spouse are co-trustees. /s/ Thomas L. Gutshall by Joseph H. Smith, Attorney-in-Fact 2009-09-28