Filed by Charles River Laboratories International, Inc.
pursuant to Rule 14a-12
of the Securities Exchange Act of 1934

Subject Company: Charles River Laboratories International, Inc.
(Commission File No.: 001-15943)
 


July 9, 2010


Dear Shareholder:

We have previously sent to you proxy materials for the special meeting of shareholders of Charles River Laboratories International, Inc., to be held on August 5, 2010.  The Charles River board of directors unanimously recommends that you vote FOR the issuance of Charles River common stock in connection with the transaction to acquire WuXi PharmaTech (Cayman) Inc.

Your vote is important, no matter how many or how few shares you may own.  Whether or not you have already done so, please vote TODAY by telephone, via the Internet, or by signing, dating and returning the enclosed proxy card in the envelope provided.

Very truly yours,
James C. Foster
Chairman, Chief Executive Officer and President




 
REMEMBER:
You can vote your shares by telephone, or via the Internet.
Please follow the easy instructions on the enclosed proxy card.

If you have any questions, or need assistance in voting
your shares, please call our proxy solicitor,

INNISFREE M&A INCORPORATED
TOLL-FREE, at 1-888-750-5834.
 


 

Additional Information
This document may be deemed to be solicitation material in respect of the proposed combination of Charles River and WuXi. In connection with the proposed transaction, Charles River has filed a definitive proxy statement with the SEC. Before making any voting or investment decisions, investors and security holders are urged to read the definitive proxy statement and any other relevant documents filed with the SEC because they will contain important information. The definitive proxy statement will be mailed to the shareholders of Charles River seeking their approval of the proposed transaction. Charles River’s shareholders will also be able to obtain a copy of the definitive proxy statement free of charge by directing a request to:
Charles River Laboratories, 251 Ballardvale Street, Wilmington,
MA 01887, Attention: General Counsel.

In addition, the definitive proxy statement is available free of charge at the SEC’s website, www.sec.gov or shareholders may access copies of the documentation filed with the SEC by Charles River on Charles River’s website at:
www.criver.com/specialwuxi2010.

Charles River, WuXi and their respective directors and executive officers and other members of management may be deemed to be participants in the solicitation of proxies in respect of the proposed transaction. Information regarding Charles River’s directors and executive officers is available in Charles River’s proxy statement for its 2010 annual meeting of shareholders, which was filed with the SEC on March 30, 2010. Information regarding the interests of Charles River’s directors and certain members of Charles River’s management in the proposed transaction is set forth in the definitive proxy statement filed with the SEC. Information regarding WuXi’s directors and executive officers is available in WuXi’s annual report on Form 20-F for the fiscal year ended December 31, 2009, which was filed with the SEC on April 23, 2010. Information regarding the interests of WuXi’s directors and certain members of WuXi’s management in the proposed transaction is available in WuXi’s approved scheme document, which was filed on Form 6-K with the SEC on June 29, 2010.

This document does not constitute an offer of any securities for sale or a solicitation of an offer to buy any securities. The Charles River shares to be issued in the proposed transaction have not been and will not be registered under the Securities Act of 1933, as amended (the “Securities Act”), and may not be offered or sold in the United States absent registration or an applicable exemption from registration requirements. Charles River intends to issue such Charles River shares pursuant to the exemption from registration set forth in Section 3(a)(10) of the Securities Act.