Ceradyne, Inc. to Participate in Stephens Inc.'s Security and Defense Conference-At-Your-Desk

Ceradyne, Inc. (Nasdaq: CRDN) Chief Executive Officer Joel P. Moskowitz is scheduled to participate in Stephens Inc.'s Security and Defense Conference-At-Your-Desk starting at 8:00 a.m. PST (11:00 a.m. EST) on Thursday, December 17, 2009.

In a conference call expected to last approximately one hour, Mr. Moskowitz will entertain questions from Tim Quillin, Research Analyst and Managing Director, Stephens Inc., and participating institutional investors regarding, among other things, the Company's advanced technical ceramics technology. The conference call will be webcast live and can be accessed in the Investor Relations section of the Company's website, www.ceradyne.com. The conference call will also be archived on the website.

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 conference call contains 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 December 31, 2008 as filed with the U.S. Securities and Exchange Commission.