X0201 3 2004-02-09 0 0000709283 QUANTUM CORP /DE/ DSS 0001280068 KREIGLER GEORGE III 1650 TECHNOLOGY DRIVE, SUITE 800 SAN JOSE CA 95110 0 1 0 0 SVP,GM Storage Systems Option #H10506 7.1921 1998-05-01 2008-05-22 DSS Common Stock 854 D Option #H13693 6.8537 1999-04-01 2009-02-19 DSS Common Stock 797 D Option #H15901 6.4306 1999-04-01 2009-06-04 DSS Common Stock 790 D Option #H14171 6.4306 1999-04-01 2009-06-04 DSS Common Stock 406 D Option #H15891 6.4306 1999-04-01 2009-06-04 DSS Common Stock 4552 D Option #H17426 8.7879 2000-01-01 2010-01-11 DSS Common Stock 759 D Option #H22728 8.7879 2000-01-01 2010-01-11 DSS Common Stock 23 D Option #D26291 9.5625 2000-04-01 2010-06-21 DSS Common Stock 8052 D Option #DN26291 9.5625 2000-04-01 2010-06-21 DSS Common Stock 16255 D Option #H26291 12.4953 2000-04-01 2010-06-21 DSS Common Stock 3281 D Option #HN26291 12.4953 2000-04-01 2010-06-21 DSS Common Stock 11892 D Option #D32056 10.93 2001-07-01 2012-01-07 DSS Common Stock 17240 D Option #D32057 10.93 2001-07-01 2012-01-07 DSS Common Stock 12760 D Option #D32058 10.93 2001-07-01 2012-01-07 DSS Common Stock 2000 D Option #D32059 10.93 2001-07-01 2012-01-07 DSS Common Stock 4000 D Option #D32060 10.93 2001-07-01 2012-01-07 DSS Common Stock 919 D Option #D32061 10.93 2001-07-01 2012-01-07 DSS Common Stock 30000 D Option #D32062 10.93 2001-07-01 2012-01-07 DSS Common Stock 8081 D Option #D32328 10.93 2001-07-01 2012-01-07 DSS Common Stock 24048 D Option #DN32328 10.93 2001-07-01 2012-01-07 DSS Common Stock 55952 D Option #D33347 6.7 2002-04-01 2012-05-02 DSS Common Stock 85500 D Option #D33384 6.7 2002-04-01 2012-05-02 DSS Common Stock 42750 D Option #D33575 2.08 2002-07-01 2012-07-31 DSS Common Stock 51657 D Option #D35027 2.95 2003-07-01 2008-07-29 DSS Common Stock 143400 D Vests 25% on first anniversary and monthly thereafter at a rate of 1/48th per month for remaining three years. Right to buy granted under Rule 16b(3) plan. Equal monthly vesting over 48 months. 2,276 shares vest on 4-1-04; 2,276 shares vest on 4-1-05. Equal monthly vesting over 24 months. 50% vests on 1-1-01; 50% vests on 1-1-02. 20,000 shares vest on 7-1-01; 5,000 shares vest on 7-1-06; 5,000 shares vest on 7-1-07. George Kreigler, III 2004-02-17