| July 24, 2017 | GLG Partners LP | 1.10% | still open |
| June 29, 2017 | GLG Partners LP | 1.03% | still open |
| June 28, 2017 | GLG Partners LP | 0.97% | still open |
| June 27, 2017 | GLG Partners LP | 1.05% | still open |
| June 19, 2017 | GLG Partners LP | 0.98% | still open |
| June 16, 2017 | GLG Partners LP | 1.01% | still open |
| June 13, 2017 | Merian Global Investors (UK) Limited | 0.74% | still open |
| June 12, 2017 | Merian Global Investors (UK) Limited | 0.62% | still open |
| April 20, 2017 | GLG Partners LP | 0.93% | still open |
| March 27, 2017 | GLG Partners LP | 0.72% | still open |
| March 24, 2017 | Blackrock Investment Management (UK) Limited | 0.39% | still open |
| March 22, 2017 | Blackrock Investment Management (UK) Limited | 0.56% | still open |
| March 8, 2017 | Blackrock Investment Management (UK) Limited | 0.68% | still open |
| February 28, 2017 | GLG Partners LP | 0.54% | still open |
| February 9, 2017 | Blackrock Investment Management (UK) Limited | 0.79% | still open |
| February 2, 2017 | Blackrock Investment Management (UK) Limited | 0.80% | still open |
| January 24, 2017 | Blackrock Investment Management (UK) Limited | 0.79% | still open |
| January 19, 2017 | Blackrock Investment Management (UK) Limited | 0.80% | still open |
| January 17, 2017 | Blackrock Investment Management (UK) Limited | 0.79% | still open |
| January 12, 2017 | Blackrock Investment Management (UK) Limited | 0.80% | still open |
| January 5, 2017 | Blackrock Investment Management (UK) Limited | 0.72% | still open |
| December 12, 2016 | Blackrock Investment Management (UK) Limited | 0.61% | still open |
| November 17, 2016 | Blackrock Investment Management (UK) Limited | 0.52% | still open |
| May 31, 2016 | Blackrock Investment Management (UK) Limited | 0.46% | still open |
| May 26, 2016 | Blackrock Investment Management (UK) Limited | 0.59% | still open |
| May 24, 2016 | Blackrock Investment Management (UK) Limited | 0.68% | still open |
| May 13, 2016 | Blackrock Institutional Trust Company, National Association | 0.49% | still open |
| May 5, 2016 | Blackrock Investment Management (UK) Limited | 0.70% | still open |
| April 29, 2016 | Blackrock Institutional Trust Company, National Association | 0.51% | still open |
| April 25, 2016 | Blackrock Investment Management (UK) Limited | 0.63% | still open |
| April 20, 2016 | Blackrock Investment Management (UK) Limited | 0.51% | still open |
| June 24, 2013 | Elliott Investment Management Limited | 0.32% | still open |
| June 21, 2013 | Elliott Investment Management Limited | 0.55% | still open |
| June 18, 2013 | Elliott Investment Management Limited | 0.67% | still open |
| June 14, 2013 | Elliott Investment Management Limited | 0.76% | still open |
| June 12, 2013 | Elliott Investment Management Limited | 0.87% | still open |
| May 10, 2013 | Elliott Investment Management Limited | 0.99% | still open |
| May 2, 2013 | Elliott Investment Management Limited | 1.07% | still open |
| April 25, 2013 | Elliott Investment Management Limited | 1.19% | still open |
| April 19, 2013 | Elliott Investment Management Limited | 1.28% | still open |
| April 11, 2013 | Elliott Investment Management Limited | 1.39% | still open |
| April 4, 2013 | Elliott Investment Management Limited | 1.48% | still open |
| March 28, 2013 | Elliott Investment Management Limited | 1.58% | still open |
| March 28, 2013 | Elliott Management Corporation | 0.00% | still open |
| March 27, 2013 | Elliott Management Corporation | 1.59% | still open |
| March 25, 2013 | Elliott Management Corporation | 1.64% | still open |
| March 21, 2013 | Elliott Management Corporation | 1.78% | still open |
| March 20, 2013 | Elliott Management Corporation | 1.89% | still open |
| March 18, 2013 | Elliott Management Corporation | 1.96% | still open |
| March 13, 2013 | Elliott Management Corporation | 2.09% | still open |