[Canadian Solar Announces Pricing of Concurrent Offerings of 2,778,000 Common Shares and GUELPH, Ontario, February 12, 2014 - Canadian Solar Inc. (NASDAQ: CSIQ) (the “Company”, or “Canadian Solar”), one of the world’s largest solar power companies, today announced that it priced the offering of 2,778,000 common shares of the Company, with no par value (the “Common Shares”) (the “Common Shares] [FORM 6-K CANADIAN SOLAR INC. No. 199 Lushan Road Suzhou New District Suzhou, Jiangsu 215129 People’s Republic of China Form 20-F x Form 40-F o o o CANADIAN SOLAR INC. Form 6-K TABLE OF CONTEN]

[Canadian Solar Announces the Concurrent Offerings of 2,600,000 Common Shares and US$100 Million GUELPH, Ontario, February 11, 2014 Credit Suisse Securities (USA) LLC, J.P. Morgan Securities LLC and Nomura Securities International, Inc. will act as joint book-running managers for the Common Shares Offering. The closing of the Notes Offering is contingent upon the closing of the Common Shares Offering, and] [FORM 6-K CANADIAN SOLAR INC. No. 199 Lushan Road Suzhou New District Suzhou, Jiangsu 215129 People’s Republic of China Form 20-F x Form 40-F o o o CANADIAN SOLAR INC. Form 6-K TABLE OF CONTENTS]

[Canadian Solar Announces Selective Preliminary Results for the Fourth Quarter 2013, Schedules Earnings Conference Call for March 5 GUELPH, Ontario, February 11, 2014 — Canadian Solar Inc. (the “Company”, or “Canadian Solar”) (NASDAQ: CSIQ), one of the world’s largest solar power companies, today announced selective preliminary results for the fourth quarter ended on December 31, 2013. For the fourth quarter] [Unless otherwise indicated or unless the context otherwise requires, the “Company” refers to Canadian Solar Inc., a Canadian company, its predecessor entities and its subsidiaries. “China” or “PRC” refers to the People’s Republic of China, excluding Taiwan and the special administrative regions of Hong Kong and Macau. About Canadian Solar Inc. Canadian Solar Inc. is one of the world’s largest] [CANADIAN SOLAR INC. INDEX TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS Use these links to rapidly review the document CANADIAN SOLAR INC. Unaudited Condensed Consolidated Balance Sheets as of December 31, 2012 and September 30, 2013 F-2 Unaudited Condensed Consolidated Statements of Operations for the Nine Months Ended September 30, 2012 and 2013 F-4 Unaudited Condensed Consolidated Statements of Comprehensive Income] [FORM 6-K CANADIAN SOLAR INC. No. 199 Lushan Road ý o Form 20-F o o CANADIAN SOLAR INC. Form 6-K TABLE OF CONTENTS 3]

[Canadian Solar Announces the Sale its Fourth Utility Scale Solar Power Plant in Ontario to a Fund Managed by BlackRock GUELPH, Ontario and TORONTO, February 6, 2014 — Canadian Solar Inc. (NASDAQ: CSIQ) ( the “Company”, or “Canadian Solar”), one of the world’s largest solar power companies, today announced that its subsidiary, Canadian Solar Solutions Inc., entered into an agreement] [Canadian Solar Announces the Sale of a 10MW Utility Scale Solar Power Plant in Ontario to a Fund Managed by BlackRock TORONTO and GUELPH, Ontario, January 27, 2014 - Canadian Solar Inc. (NASDAQ: CSIQ) (the “Company”, or “Canadian Solar”), one of the world’s largest solar power companies, today announced that its subsidiary, Canadian Solar Solutions Inc., entered into an agreement] [FORM 6-K CANADIAN SOLAR INC. No. 199 Lushan Road Suzhou New District Suzhou, Jiangsu 215129 People’s Republic of China Form 20-F x Form 40-F o o o CANADIAN SOLAR INC. Form 6-K TABLE OF CONTENTS]