X0201 4 2004-02-06 0000073773 OI CORP OICO 0001200063 DIAZ JUAN M P.O. BOX 9010 COLLEGE STATION TX 77842-9010 0 1 0 0 Vice Pres - Corp. Controller Common Stock 2004-02-06 4 M 0 6000 6.52 A 0 D Common Stock 2004-02-06 4 M 0 1000 2.90 A 0 D Common Stock 2004-02-06 4 S 0 7000 7.85 D 0 D Employee Stock Option (right to buy) 6.52 2004-02-06 4 M 0 6000 D 2003-01-29 2012-01-29 Common Stock 6000 3000 D Employee Stock Option (right to buy) 2.90 2004-02-06 4 M 0 1000 D 2002-07-11 2011-07-11 Common Stock 1000 2000 D The option vests in three equal annual installments on January 29, 2003, 2004 and 2005. The option vests in three equal installments on July 11, 2002, 2003 and 2004. No price was paid to acquire this option. No price was paid to acquire this option. JUAN M. DIAZ 2004-02-10