[Canadian Solar Reports First Quarter 2014 Results GUELPH, Ontario, May 16, 2014 — Canadian Solar Inc. (“Canadian Solar” or the “Company”) (NASDAQ: CSIQ), one of the world’s largest solar power companies, today announced its financial results for the first quarter ended March 31, 2014. First Quarter 2014 Highlights · Solar module shipments were 500 MW, compared to 621 MW in] [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 C]

[Canadian Solar Announces Selective Preliminary Results for the First Quarter 2014 and Schedules Earnings Release and Conference Call for Friday, May 16 GUELPH, Ontario, May 7, 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 first quarter ended March 31, 2014 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 TA]

[Canadian Solar Reports Fourth Quarter and Full Year 2013 Results Guelph, Ontario, March 5, 2014 — Canadian Solar Inc. (“Canadian Solar” or the “Company”) (NASDAQ: CSIQ), one of the world’s largest solar power companies, today announced its financial results for the fourth quarter and full year ended December 31, 2013. Fourth Quarter 2013 Highlights · Solar module shipments were 621] [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 2]

[Canadian Solar Announces Closing of Concurrent Offerings of 3,194,700 Common Shares and US$150 Million Convertible Senior Notes GUELPH, Ontario, February 18 , 2014 - Canadian Solar Inc. (NASDAQ: CSIQ) (the “Company”, or “Canadian Solar”), one of the world’s largest solar power companies, Credit Suisse Securities (USA) LLC, J.P. Morgan Securities LLC, and Nomura Securities International, Inc. acted as joint book-running] [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]

[EXECUTION 2,778,000 Shares CANADIAN SOLAR INC. Common Shares UNDERWRITING AGREEMENT February 11, 2014 CREDIT SUISSE SECURITIES (USA) LLC J.P. MORGAN SECURITIES LLC As Representatives of the Several Underwriters Ladies and Gentlemen: 1. Introductory Company Underwriters Firm Securities Securities Optional Securities Offered Securities Concurrent Offering . Canadian Solar Inc., a Canada Business Corporations Act corporation (“ 2. (a) Filing and Effectiveness] [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 Incorporation by Reference 2 CANADIAN SOLAR INC. Form 6-K TABLE OF CONTENTS]