CANADIAN SOLAR INC

Ticker: CSIQ CUSIP: 136635109 Class: Foreign Stock

ESSEX INVESTMENT MANAGEMENT CO LLC's Holding History (CIK: 0000201772)

Note: Option positions (PUT/CALL) are excluded.

Q4 2014

Shares 181,232 Value ($000) $4,384 Avg Close $27.20 Range $20.64 - $35.79

Q3 2014

Shares 184,107 Value ($000) $6,586 Avg Close $32.43 Range $23.20 - $41.12

Q2 2014

Shares 188,690 Value ($000) $5,898 Avg Close $26.97 Range $21.38 - $34.38

Q2 2013

Shares 18,498 Value ($000) $203 Avg Close $6.87 Range $3.16 - $11.61

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2014	181,232	$4,384	$27.20	$20.64 - $35.79
Q3 2014	184,107	$6,586	$32.43	$23.20 - $41.12
Q2 2014	188,690	$5,898	$26.97	$21.38 - $34.38
Q2 2013	18,498	$203	$6.87	$3.16 - $11.61