X0202 4 2004-11-24 0 0001039065 OSI SYSTEMS INC OSIS 0001047072 LUSKIN MEYER/ 12525 CHADRON AVE HAWTHORNE CA 90250 1 0 0 0 Common Stock 2004-11-23 4 G 0 100 0 D 100410 I See Footnote 2 Common Stock 2004-11-24 4 M 0 5900 3.44 A 106310 I See Footnote 2 Common Stock 2004-11-24 4 M 0 2500 9.48 A 108810 I See Footnote 2 Common Stock 2004-11-24 4 G 0 8400 0 D 100400 I See Footnote 2 Stock Option (right to buy) 3.44 2004-11-24 4 M 0 5900 3.44 D 2004-04-18 2006-04-18 Common stock 5900 26100 D Stock Option (right to buy 9.48 2004-11-24 4 M 0 2500 9.48 D 2003-02-07 2005-02-07 Common stock 2500 23600 D Stock Option (right to buy 20.91 2004-11-26 4 A 0 15000 20.91 A 1988-08-08 2009-11-26 Common stock 15000 68600 D 1 Includes 5,710 shares of common stock held by Meyer and Doreen Luskin Family Trust. 2 These shares are owned directly by Scope Industries, and indirectly by the reporting person as Chairman, President and CEO of Scope Industries. The reporting person is a director of the issuer. The reporting person disclaimes beneficial ownership of the securities, 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. 3 The Option vests as follows: 25% on 11/26/05 ; 50% on 11/26/06 and 100% on 11/26/07 /s/ Meyer Luskin 2004-11-30