X0303 4 2009-05-12 0 0000867773 SUNPOWER CORP SPWRA 0001247756 WERNER THOMAS H C/O SUNPOWER CORPORATION 3939 NORTH FIRST STREET SAN JOSE CA 95134 1 1 0 0 Chief Executive Officer Class A Common Stock 2009-05-12 4 M 0 25000 3.3 A 102033 D Class A Common Stock 2009-05-12 4 S 0 22917 26.9123 D 79116 D Class A Common Stock 2009-05-12 4 S 0 2083 28.35 D 77033 D Stock Option (Right to Buy) 3.3 2009-05-12 4 M 0 25000 0 D 2014-06-17 Class A Common Stock 25000 228343 D The transactions reported on this Form 4 were effected pursuant to a previously adopted rule 10b5-1 trading plan by the reporting person. Price reflects weighted average sales price; actual sales prices ranged from $26.60 to $27.50. The reporting person undertakes to provide, upon request by the Commission staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares purchased or sold at each separate price. The option to purchase shares of Issuer's Class A Common Stock, awarded on June 17, 2004, vested and became exercisable as to 20% of the total underlying shares on June 17, 2005, and vests and becomes exercisable as to 1 2/3% of the total underlying shares on the 17th day of each month thereafter. Donald T. Rozak, Jr., CP, as attorney-in-fact for Thomas H. Werner 2009-05-14