| Filed On | Filing |
|---|---|
| 28 Jan 2014 | SC 13G/A |
| 29 Mar 2013 | SC 13G/A |
| 13 Feb 2013 | SC 13G/A |
| 14 Feb 2012 | AMENDMENT NO. 1 TO SCHEDULE 13G |
| 25 Jan 2012 | SC 13G/A |
| 20 Jan 2011 | SC 13G/A |
| 12 Feb 2010 | WILLBROS GROUP INC. |
| 09 Feb 2010 | SCHEDULE 13G AMENDMENT NO. 3 |
| 29 Jul 2009 | SC 13G/A |
| 10 Mar 2009 | DOC ONE |
| 20 Feb 2009 | SCHEDULE 13G AMENDMENT NO. 2 |
| 17 Feb 2009 | DOC ONE |
| 17 Feb 2009 | AMENDMENT NO. 1 TO SCHEDULE 13G |
| 13 Feb 2009 | AMENDMENT NO. 3 |
| 11 Feb 2009 | WILLBROS GROUP INC. |
| 09 Feb 2009 | WILLBROS GROUP, INC. |
| 23 Jan 2009 | WELLS FARGO & COMPANY |
| 09 Jan 2009 | SC 13G/A |
| 10 Oct 2008 | DOC ONE |
| 31 Mar 2008 | SC 13G/A |
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