X0202 4/A 2003-05-22 2003-05-23 0 0000018937 CERADYNE INC CRDN 0001268643 WALDAL JEFF 3108 HEMINGWAY LANE LEXINGTON KY 40513 0 1 0 0 Vice President Common Stock 2003-05-22 4 M 0 5000 5.12 A 8455 D Common Stock 2003-05-22 4 S 0 5000 15.03 D 3455 D Common Stock 2003-05-22 4 M 0 1000 4.375 A 4455 D Common Stock 2003-05-22 4 S 0 1000 15.03 D 3455 D Common Stock 2003-05-22 4 M 0 2400 3.5 A 5855 D Common Stock 2003-05-22 4 S 0 2400 15.03 D 3455 D Common Stock 357 I By 401(k) Plan Trust Employee Stock Option (right to buy) 5.125 2003-05-22 4 M 0 5000 0 D 2005-12-14 Common Stock 5000 0 D Employee Stock Option (right to buy) 4.375 2003-05-22 4 M 0 1000 0 D 2007-05-23 Common Stock 1000 0 D Employee Stock Option (right to buy) 3.5 2003-05-22 4 M 0 2400 0 D 2008-09-04 Common Stock 2400 1600 D This Option vested in five equal installments on 12/14/1996, 12/14/1997, 12/14/1998, 12/14/1999 and 12/14/2000. This Option vested in five equal installments on 5/23/1998, 5/23/1999, 5/23/2000, 5/23/2001 and 5/23/2002. This Option vests in five equal installments on 09/04/1999, 09/04/2000, 09/04/2001, 09/04/2002 and 09/04/2003. Includes 406 shares acquired under the Ceradyne 401(k) plan in 2003, 342 shares acquired under the Ceradyne 401(k) plan in 2001 and 654 shares acquired under the Ceradyne 401(k) plan in 2000. 1,045 shares were sold and transferred to other investments within the 401(k) plan for the reporting person on February 14, 2003 at a share price of $9.6196. This transaction was omitted from the original Form 4 of the reporting person. Jerrold J. Pellizzon, Attorney-in-Fact 2005-07-01