X0202 3 2007-08-24 0 0000874841 PACIFIC SUNWEAR OF CALIFORNIA INC PSUN 0001165408 ADAGE CAPITAL PARTNERS GP LLC 200 CLARENDON STREET 52ND FLOOR BOSTON MA 02116 0 0 1 0 Common Stock, $.01 par value ("Common Stock") 8000053 I See Footnote The Shares of Common Stock to which this note relates are held directly by Adage Capital Partners, L.P., a Delaware limited partnership (the "Fund"). Adage Capital Partners GP, L.L.C., a Delaware limited liability company ("ACPGP"), serves as the general partner of the Fund and as such has discretion over the portfolio securities beneficially owned by the Fund. Adage Capital Advisors, L.L.C., a Delaware limited liability company ("ACA"), is the managing member of ACPGP and directs ACPGP's operations. Robert Atchinson and Phillip Gross are the managing members of ACPGP and ACA and general partners of ACP. ACPGP, ACA, Robert Atchinson and Phillip Gross disclaim beneficial ownership of the reported securities except to the extent of their pecuniary interest therein. /s/ Robert Atchinson; Managing Member of Adage Capital Partners GP, L.L.C., the general partner of Adage Capital Partners, L.P. 2007-09-04