CRDN Ceradyne, Inc. (MM)

Ceradyne, Inc. (Nasdaq:CRDN) Chief Executive Officer Joel P. Moskowitz will speak at The Sixth Annual JMP Securities Research Conference in San Francisco beginning at 1:30 p.m. PDT today, Monday, May 21, 2007. The audio and accompanying slides of Mr. Moskowitz�s presentations will be webcast live and made available on Ceradyne�s website at www.ceradyne.com in the Investor Relations section on the Event Calendar page. The webcast will remain archived for 90 days. Ceradyne develops, manufactures, and markets advanced technical ceramic products and components for defense, industrial, automotive/diesel, and commercial applications. Additional information about the Company can be found at www.ceradyne.com. Except for the historical information contained therein, the presentations contain forward-looking statements regarding future events and the future performance of Ceradyne that involve risks and uncertainties that could cause actual results to differ materially from those projected. Words such as �anticipates,� �believes,� �plans,� �expects,� �intends,� �future,� and similar expressions are intended to identify forward-looking statements. These risks and uncertainties are described in the Company�s Annual Report on Form 10-K for the fiscal year ended dated December 31, 2006 and its Quarterly Reports on Form 10-Q as filed with the U.S. Securities and Exchange Commission.