Berger & Montague, P.C. Announces its Investigation of Canadian Solar Inc. (“Canadian Solar” or the “Company”)

Berger & Montague, P.C. (the “Berger Firm”) announces that a securities class action complaint (“complaint”) has been filed in the United States District Court for the Southern District of New York against Canadian Solar (NASDQ:CSIQ) and certain of its officers. The complaint was filed on behalf of investors who purchased the common stock of the Company between March 3, 2010 and June 1, 2010. However, the Berger Firm believes that investors who purchased shares of Canadian Solar on or after November 17, 2009 may have claims against the Company.

Canadian Solar disclosed, after the close of the market on June 1, 2010, that it received a Securities and Exchange Commission (“SEC”) subpoena. The SEC subpoena requested documents from Canadian Solar relating to certain sales transactions in 2009. The Company disclosed that its Audit Committee has retained outside counsel and independent forensic accountants to assist in reviewing the transactions described in the subpoena. The Company postponed the release of its full financial results for the first quarter ended March 31, 2010 and its quarterly conference call scheduled for June 2, 2010. Canadian Solar also announced that its first quarter operating results would be updated, and that the Company’s 4Q09 net revenue numbers may be revised “due to the company’s intention to recognize sales only after receiving full cash payments from certain customers and due to certain subsequent return of goods after the quarter end.”

Canadian Solar declined $1.69 per share, or 14.25%, to close on June 2, 2010 at $10.17 per share, on unusually heavy trading volume.

Please contact the Berger Firm at (888) 891-2289 if you purchased Canadian Solar common stock during the period November 17, 2009 through June 1, 2010. Visit our website, www.bergermontague.com, or call us at (888) 891-2289 for more information.

Berger & Montague, founded in 1970, is a pioneer in class action litigation. The firm’s approximately 70 attorneys concentrate their practice in complex litigation including securities fraud and corporate governance, antitrust, civil and human rights, consumer protection and environmental and mass torts, and have recovered several billion dollars for consumers and investors.