| March 6, 2020 | Squarepoint OPS LLC | 0.40% | still open |
| March 4, 2020 | Squarepoint OPS LLC | 0.59% | still open |
| March 3, 2020 | Squarepoint OPS LLC | 0.69% | still open |
| February 24, 2020 | Squarepoint OPS LLC | 0.83% | still open |
| February 17, 2020 | Squarepoint OPS LLC | 0.70% | still open |
| February 12, 2020 | Squarepoint OPS LLC | 0.60% | still open |
| February 10, 2020 | Squarepoint OPS LLC | 0.53% | still open |
| June 3, 2019 | THE Mangrove Partners Master Fund, LTD. | 0.00% | still open |
| May 16, 2019 | THE Mangrove Partners Master Fund, LTD. | 2.39% | still open |
| November 7, 2017 | THE Mangrove Partners Master Fund, LTD. | 5.42% | still open |
| October 11, 2017 | THE Mangrove Partners Master Fund, LTD. | 5.32% | still open |
| September 15, 2017 | THE Mangrove Partners Master Fund, LTD. | 4.91% | still open |
| September 8, 2017 | THE Mangrove Partners Master Fund, LTD. | 4.79% | still open |
| June 22, 2017 | THE Mangrove Partners Master Fund, LTD. | 4.65% | still open |
| June 21, 2017 | THE Mangrove Partners Master Fund, LTD. | 4.45% | still open |
| June 16, 2017 | THE Mangrove Partners Master Fund, LTD. | 3.97% | still open |
| June 15, 2017 | THE Mangrove Partners Master Fund, LTD. | 3.85% | still open |
| June 9, 2017 | THE Mangrove Partners Master Fund, LTD. | 3.73% | still open |
| June 1, 2017 | THE Mangrove Partners Master Fund, LTD. | 3.63% | still open |
| May 9, 2017 | THE Mangrove Partners Master Fund, LTD. | 3.53% | still open |
| May 4, 2017 | THE Mangrove Partners Master Fund, LTD. | 3.44% | still open |
| April 28, 2017 | THE Mangrove Partners Master Fund, LTD. | 3.27% | still open |
| April 18, 2017 | THE Mangrove Partners Master Fund, LTD. | 3.74% | still open |
| April 13, 2017 | THE Mangrove Partners Master Fund, LTD. | 3.53% | still open |
| April 3, 2017 | THE Mangrove Partners Master Fund, LTD. | 2.46% | still open |
| March 24, 2017 | THE Mangrove Partners Master Fund, LTD. | 2.33% | still open |
| March 20, 2017 | THE Mangrove Partners Master Fund, LTD. | 2.04% | still open |
| October 14, 2016 | GSA Capital Partners LLP | 0.49% | still open |
| September 20, 2016 | GSA Capital Partners LLP | 0.59% | still open |
| August 18, 2016 | GSA Capital Partners LLP | 0.61% | still open |
| August 16, 2016 | THE Mangrove Partners Master Fund, LTD. | 1.91% | still open |
| August 8, 2016 | THE Mangrove Partners Master Fund, LTD. | 1.81% | still open |
| July 29, 2016 | THE Mangrove Partners Master Fund, LTD. | 1.71% | still open |
| July 29, 2016 | GSA Capital Partners LLP | 0.51% | still open |
| July 27, 2016 | THE Mangrove Partners Master Fund, LTD. | 1.66% | still open |
| July 19, 2016 | THE Mangrove Partners Master Fund, LTD. | 1.52% | still open |
| July 14, 2016 | THE Mangrove Partners Master Fund, LTD. | 1.42% | still open |
| July 11, 2016 | THE Mangrove Partners Master Fund, LTD. | 1.32% | still open |
| May 5, 2016 | THE Mangrove Partners Master Fund, LTD. | 1.25% | still open |
| April 4, 2016 | THE Mangrove Partners Master Fund, LTD. | 1.11% | still open |
| March 31, 2016 | THE Mangrove Partners Master Fund, LTD. | 1.05% | still open |
| March 23, 2016 | THE Mangrove Partners Master Fund, LTD. | 0.93% | still open |
| March 22, 2016 | THE Mangrove Partners Master Fund, LTD. | 0.84% | still open |
| March 21, 2016 | THE Mangrove Partners Master Fund, LTD. | 0.64% | still open |
| March 17, 2016 | THE Mangrove Partners Master Fund, LTD. | 0.57% | still open |
| February 27, 2015 | Alphagen Capital Limited | 0.00% | still open |
| February 10, 2015 | Schroder Investment Management Limited | 0.00% | still open |
| January 26, 2015 | Alphagen Capital Limited | 0.60% | still open |
| January 13, 2015 | Alphagen Capital Limited | 0.56% | still open |
| December 15, 2014 | Alphagen Capital Limited | 0.72% | still open |
| December 11, 2014 | Alphagen Capital Limited | 0.68% | still open |
| December 11, 2014 | Schroder Investment Management Limited | 0.58% | still open |
| December 1, 2014 | Alphagen Capital Limited | 0.79% | still open |
| November 11, 2014 | Alphagen Capital Limited | 0.81% | still open |
| November 5, 2014 | Alphagen Capital Limited | 0.78% | still open |
| October 20, 2014 | Alphagen Capital Limited | 0.67% | still open |
| September 19, 2014 | Alphagen Capital Limited | 0.76% | still open |
| August 22, 2014 | Alphagen Capital Limited | 0.61% | still open |
| August 21, 2014 | Alphagen Capital Limited | 0.58% | still open |
| August 20, 2014 | Alphagen Capital Limited | 0.60% | still open |
| July 29, 2014 | Alphagen Capital Limited | 0.52% | still open |