| Filed On | Filing |
|---|---|
| 08 Feb 2017 | SC 13G/A |
| 16 Feb 2016 | AMENDMENT NO. 1 |
| 10 Feb 2016 | SC 13G/A |
| 17 Feb 2015 | SC 13G/A |
| 10 Feb 2015 | SC 13G/A |
| 14 Feb 2014 | SC 13G/A |
| 11 Feb 2014 | SC 13G/A |
| 14 Feb 2013 | AMENDMENT NO. 1 |
| 12 Feb 2013 | SC 13G/A |
| 14 Feb 2012 | SC 13G/A |
| 14 Feb 2012 | SC 13G/A |
| 13 Feb 2012 | SAM SUSTAINABLE ASSET MANAGEMENT LTD |
| 22 Nov 2011 | SC 13G/A |
| 12 Feb 2010 | SC 13G/A |
| 12 Feb 2010 | SCHEDULE 13G/AMENDMENT NO. 2 |
| 10 Feb 2010 | SCHEDULE 13G/AMENDMENT NO. 2 |
| 16 Apr 2009 | SAM SUSTAINABLE ASSET MANAGEMENT AG |
| 16 Apr 2009 | SAM SUSTAINABLE ASSET MANAGEMENT AG |
| 17 Feb 2009 | SC 13G/A |
| 13 Feb 2009 | SC 13G/A |
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