X0201 4 2003-11-03 0 0001123313 KYPHON INC KYPH 0001083925 LASERSOHN JACK W C/O THE VERTICAL GROUP, L.P. 25 DEFOREST AVENUE SUMMIT NJ 07901 1 0 0 0 Voting Common Stock 2003-11-03 4 S 0 15000 29 D 1838006 I Vertical Fund I, L.P. Voting Common Stock 2003-11-03 4 S 0 10000 29 D 791234 I Vertical Fund II, L.P. Voting Common Stock 2003-11-04 4 S 0 79000 29.32 D 1759006 I Vertical Fund I, L.P. Voting Common Stock 2003-11-04 4 S 0 21000 29.32 D 770234 I Vertical Fund II, L.P. The reporting person is a general partner of the general partner of the listed entity and disclaims beneficial ownership of the reported securities except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that the reporting person is the beneficial owner of the securities for purposes of Section 16 or for any other purpose. /s/ Jack W. Lasersohn 2003-11-05