Charles River Laboratories International, Inc. (NYSE: CRL) will release first-quarter 2012 financial results on Wednesday, May 2 nd, after the market closes. A conference call has been scheduled to discuss this information on Thursday, May 3 rd, at 8:30 a.m. ET. Investors will have the opportunity to listen to a live webcast of the conference call through the Investor Relations section of the Company’s website at ir.criver.com. A replay will be accessible through the same website.