| May 5, 2015 | Contour Asset Management | 0.78% | still open |
| May 4, 2015 | Contour Asset Management | 0.86% | still open |
| April 30, 2015 | Contour Asset Management | 0.93% | still open |
| April 29, 2015 | Contour Asset Management | 1.02% | still open |
| April 29, 2015 | Myriad Opportunities Master Fund Limited | 0.52% | still open |
| April 28, 2015 | Contour Asset Management | 1.12% | still open |
| April 28, 2015 | Myriad Opportunities Master Fund Limited | 0.78% | still open |
| April 28, 2015 | CQS (UK) LLP | 0.46% | still open |
| April 27, 2015 | CQS (UK) LLP | 0.76% | still open |
| April 14, 2015 | CQS (UK) LLP | 0.56% | still open |
| March 11, 2015 | Myriad Opportunities Master Fund Limited | 0.94% | still open |
| March 9, 2015 | Myriad Opportunities Master Fund Limited | 0.87% | still open |
| February 10, 2015 | Myriad Opportunities Master Fund Limited | 1.05% | still open |
| February 9, 2015 | Myriad Opportunities Master Fund Limited | 1.21% | still open |
| January 20, 2015 | Blackrock Institutional Trust Company, National Association | 0.49% | still open |
| January 15, 2015 | Myriad Opportunities Master Fund Limited | 1.10% | still open |
| January 14, 2015 | Myriad Opportunities Master Fund Limited | 1.08% | still open |
| January 12, 2015 | Blackrock Institutional Trust Company, National Association | 0.58% | still open |
| December 22, 2014 | Blackrock Advisors, LLC | 0.48% | still open |
| December 16, 2014 | Blackrock Institutional Trust Company, National Association | 0.68% | still open |
| December 15, 2014 | Blackrock Advisors, LLC | 0.59% | still open |
| December 10, 2014 | Myriad Opportunities Master Fund Limited | 0.92% | still open |
| December 5, 2014 | Contour Asset Management | 1.25% | still open |
| December 5, 2014 | Blackrock Institutional Trust Company, National Association | 0.79% | still open |
| December 4, 2014 | Contour Asset Management | 1.15% | still open |
| November 18, 2014 | Blackrock Institutional Trust Company, National Association | 0.89% | still open |
| November 13, 2014 | Citadel Europe LLP | 0.43% | still open |
| November 6, 2014 | Blackrock Institutional Trust Company, National Association | 0.90% | still open |
| November 5, 2014 | Contour Asset Management | 1.05% | still open |
| November 4, 2014 | Myriad Opportunities Master Fund Limited | 0.81% | still open |
| October 23, 2014 | Myriad Opportunities Master Fund Limited | 0.67% | still open |
| October 22, 2014 | Blackrock Institutional Trust Company, National Association | 0.81% | still open |
| October 16, 2014 | Myriad Opportunities Master Fund Limited | 0.56% | still open |
| October 15, 2014 | Blackrock Advisors, LLC | 0.63% | still open |
| October 15, 2014 | Citadel Europe LLP | 0.50% | still open |
| October 13, 2014 | Blackrock Institutional Trust Company, National Association | 0.70% | still open |
| September 29, 2014 | Blackrock Institutional Trust Company, National Association | 0.69% | still open |
| September 26, 2014 | Contour Asset Management | 1.19% | still open |
| September 4, 2014 | Blackrock Institutional Trust Company, National Association | 0.79% | still open |
| September 3, 2014 | Blackrock Institutional Trust Company, National Association | 0.80% | still open |
| August 26, 2014 | Myriad Opportunities Master Fund Limited | 0.64% | still open |
| August 21, 2014 | Myriad Opportunities Master Fund Limited | 0.57% | still open |
| August 19, 2014 | Blackrock Institutional Trust Company, National Association | 0.70% | still open |
| August 18, 2014 | Blackrock Institutional Trust Company, National Association | 0.69% | still open |
| August 14, 2014 | Blackrock Institutional Trust Company, National Association | 0.70% | still open |
| August 5, 2014 | Blackrock Institutional Trust Company, National Association | 0.68% | still open |
| August 4, 2014 | Contour Asset Management | 1.02% | still open |
| August 1, 2014 | Contour Asset Management | 0.84% | still open |
| August 1, 2014 | Citadel Europe LLP | 0.40% | still open |
| July 31, 2014 | Contour Asset Management | 0.68% | still open |