| April 23, 2014 | FIL Investment Services (UK) Limited | 1.20% | still open |
| April 17, 2014 | FIL Investment Services (UK) Limited | 1.11% | still open |
| April 11, 2014 | Eminence Capital, LP | 1.99% | still open |
| April 10, 2014 | FIL Investment Services (UK) Limited | 1.00% | still open |
| April 7, 2014 | Eminence Capital, LP | 2.07% | still open |
| March 27, 2014 | Artemis Investment Management LLP | 0.80% | still open |
| March 24, 2014 | Eminence Capital, LP | 2.15% | still open |
| March 7, 2014 | Blackrock Institutional Trust Company, National Association | 0.49% | still open |
| March 3, 2014 | Blackrock Institutional Trust Company, National Association | 0.58% | still open |
| February 28, 2014 | Blackrock Institutional Trust Company, National Association | 0.63% | still open |
| February 25, 2014 | Eminence Capital, LP | 2.25% | still open |
| February 24, 2014 | Eminence Capital, LP | 2.37% | still open |
| February 24, 2014 | Blackrock Institutional Trust Company, National Association | 0.77% | still open |
| February 18, 2014 | Artemis Investment Management LLP | 0.72% | still open |
| February 10, 2014 | Blackrock Institutional Trust Company, National Association | 0.89% | still open |
| February 6, 2014 | Blackrock Institutional Trust Company, National Association | 0.90% | still open |
| January 30, 2014 | Blackrock Institutional Trust Company, National Association | 0.82% | still open |
| January 28, 2014 | Blackrock Institutional Trust Company, National Association | 0.72% | still open |
| January 27, 2014 | Blackrock Institutional Trust Company, National Association | 0.63% | still open |
| January 27, 2014 | Scopus Asset Management, L.P. | 0.58% | still open |
| January 8, 2014 | Blackrock Institutional Trust Company, National Association | 0.50% | still open |
| January 2, 2014 | Blackrock Institutional Trust Company, National Association | 0.49% | still open |
| December 23, 2013 | Merchants' Gate Capital LP | 1.09% | still open |
| December 19, 2013 | Blackrock Institutional Trust Company, National Association | 0.51% | still open |
| December 18, 2013 | Blackrock Institutional Trust Company, National Association | 0.48% | still open |
| December 17, 2013 | Merchants' Gate Capital LP | 1.25% | still open |
| December 10, 2013 | FIL Investment Services (UK) Limited | 0.90% | still open |
| December 9, 2013 | FIL Investment Services (UK) Limited | 0.83% | still open |
| December 6, 2013 | Blackrock Institutional Trust Company, National Association | 0.50% | still open |
| November 19, 2013 | Artemis Investment Management LLP | 0.61% | still open |
| November 14, 2013 | FIL Investment Services (UK) Limited | 0.72% | still open |
| November 12, 2013 | FIL Investment Services (UK) Limited | 0.59% | still open |
| October 24, 2013 | Blackrock Institutional Trust Company, National Association | 0.49% | still open |
| October 22, 2013 | Blackrock Institutional Trust Company, National Association | 0.50% | still open |
| October 15, 2013 | Polar Capital LLP | 0.59% | still open |
| October 10, 2013 | Artemis Investment Management LLP | 0.53% | still open |
| October 9, 2013 | Luxor Capital Group, LP | 0.42% | still open |
| October 7, 2013 | Luxor Capital Group, LP | 0.94% | still open |
| September 23, 2013 | Blackrock Institutional Trust Company, National Association | 0.48% | still open |
| September 18, 2013 | Blackrock Institutional Trust Company, National Association | 0.57% | still open |
| September 17, 2013 | Blackrock Institutional Trust Company, National Association | 0.67% | still open |
| August 30, 2013 | Blackrock Institutional Trust Company, National Association | 0.72% | still open |
| August 29, 2013 | Fest N.V. | 0.45% | still open |
| August 28, 2013 | Fest N.V. | 0.63% | still open |
| August 27, 2013 | Eminence Capital, LP | 2.40% | still open |
| August 27, 2013 | Fest N.V. | 0.93% | still open |
| August 23, 2013 | Fest N.V. | 1.31% | still open |
| August 22, 2013 | Fest N.V. | 1.48% | still open |
| August 20, 2013 | Blackrock Institutional Trust Company, National Association | 0.60% | still open |
| August 14, 2013 | Blackrock Institutional Trust Company, National Association | 0.51% | still open |