Ceradyne, Inc. will release financial results for the third quarter ended September 30, 2004, before the market open on Thursday, October 28. The company will also hold a teleconference to review its financial results and strategic outlook. Any investor or interested individual can listen to the teleconference, which is scheduled to begin at 8 a.m. PDT (11 a.m. EDT). To participate in the teleconference, call (877) 869-7690 or (706) 634-1478 approximately 10 minutes prior to the start time. The teleconference will also be available live at http://www.ceradyne.com or http://www.FullDisclosure.com. A telephone playback will be available for 48 hours beginning at 11 a.m. PDT on October 28. The playback can be accessed by calling (800) 642-1687 or (706) 645-9291 and providing conference ID 1736771.