Ceradyne, Inc. will release results for the fourth quarter and year ended December 31, 2002, on February 24. The company will also hold a teleconference to discuss the financial results and future plans and prospects. Any interested individual can listen to the teleconference, which is scheduled to begin at 8 a.m. PST (11 a.m. EST), at http://www.ceradyne.com or http://www.CompanyBoardroom.com . These websites will host an archive of the teleconference for 30 days. A telephone playback will also be available for 48 hours beginning at 11:30 a.m. PST on February 24. The playback can be accessed by calling (800) 642-1687 or (706) 645-9291; the conference ID is 8341701.

For more information, call (714) 549-0421, ext. 294, or visit http://www.ceradyne.com .