| Filed On | Filing |
|---|---|
| 08 Feb 2023 | SC 13G |
| 18 Jan 2022 | SC 13G |
| 25 Jan 2021 | SC 13G |
| 04 Feb 2020 | SC 13G |
| 09 Feb 2017 | SCHEDULE 13G |
| 12 Feb 2015 | STATEMENT OF ACQUISITION OF BENEFICIAL OWNERSHIP |
| 03 Feb 2015 | SC 13G |
| 11 Feb 2014 | SC 13G |
| 10 Feb 2014 | STATEMENT OF ACQUISITION OF BENEFICIAL OWNERSHIP |
| 14 Feb 2013 | DISCLOSURE DOCUMENT |
| 13 Jan 2012 | SC 13G |
| 17 Jun 2011 | SC 13G |
| 14 Feb 2007 | SC 13G |
| 23 Jan 2007 | SC 13G |
| 14 Feb 2006 | SC 13G |
| 10 Feb 2006 | SC 13G |
| 27 Jan 2006 | OCTEL CORP. |
| 26 Jan 2006 | SC 13G |
| 14 Feb 2005 | SC 13G |
| 18 Nov 2004 | OCTEL CORP. - SC 13G |
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