X0201 42003-11-25 0001123313 KYPHON INC KYPH 0000889232 INVESTOR AB ARSENALSGATAN 8C, S-103 32 STOCKHOLM, SWEDEN 0010Common Stock2003-11-254S01050025.85D4115748ISee FootnotesCommon Stock2003-11-254S01050025.86D4105248ISee FootnotesCommon Stock2003-11-254S02275025.87D4082498ISee FootnotesCommon Stock2003-11-254S0350025.90D4078998ISee FootnotesCommon Stock2003-11-254S0350025.95D4075498ISee FootnotesCommon Stock2003-11-254S0350025.97D4071998ISee FootnotesCommon Stock2003-11-254S0700025.98D4064998ISee FootnotesCommon Stock2003-11-254S0350025.99D4061498ISee FootnotesCommon Stock2003-11-254S0350026.00D4057998ISee FootnotesCommon Stock2003-11-254S0525026.05D4052748ISee FootnotesCommon Stock2003-11-254S0525026.12D4047498ISee FootnotesCommon Stock2003-11-254S0525026.28D4042248ISee FootnotesCommon Stock2003-11-254S0450025.85D4037748ISee FootnotesCommon Stock2003-11-254S0450025.86D4033248ISee FootnotesCommon Stock2003-11-254S0975025.87D4023498ISee FootnotesCommon Stock2003-11-254S0150025.90D4021998ISee FootnotesCommon Stock2003-11-254S0150025.95D4020498ISee FootnotesCommon Stock2003-11-254S0150025.97D4018998ISee FootnotesCommon Stock2003-11-254S0300025.98D4015998ISee FootnotesCommon Stock2003-11-254S0150025.99D4014498ISee FootnotesCommon Stock2003-11-254S0150026.00D4012998ISee FootnotesCommon Stock2003-11-254S0225026.05D4010748ISee FootnotesCommon Stock2003-11-254S0225026.12D4008498ISee FootnotesCommon Stock2003-11-254S0225026.28D4006248ISee FootnotesThese shares of the Issuer's common stock, $0.001 par value per share ("Shares"), were sold for the account of Investor Growth Capital Limited, a Guernsey company ("IGC"). IGC is an indirectly wholly-owned subsidiary of the Reporting Person.These Shares were sold for the account of Investor Group, L.P., a Guernsey company ("IG"). The Reporting Person is the ultimate general partner of IG.Following the reported transactions, the Reporting Person may be deemed to be the beneficial owner of 4,006,248 Shares. Of this amount, (i) 2,804,373 Shares are held for the account of IGC, and (ii) 1,201,875 Shares are held for the account of IG. The Reporting Person may be deemed to be a member of a "group" pursuant to Section 13(d) of the Securities Exchange Act of 1934, as amended (the "Act"), that, combined, has beneficial ownership of more than 10% of the Issuer's outstanding Shares. The filing of this statement shall not be deemed an admission that the Reporting Person is a member of any such "group" or that the Reporting Person is the beneficial owner of any Shares or other securities owned by any other person.The filing of this statement shall not be deemed an admission that the Reporting Person is the beneficial owner of any securities not held directly for its account for purposes of Section 16 of the Act, or otherwise.Henry Gooss for Investor AB2003-11-26Michael Oporto for Investor AB2003-11-26