| 18 mei 2015 | Elliott Capital Advisors L.P * | 1,57% | |
| 15 mei 2015 | Elliott Capital Advisors L.P * | 1,71% | |
| 14 mei 2015 | Elliott Capital Advisors L.P * | 1,94% | |
| 13 mei 2015 | Elliott Capital Advisors L.P * | 2,16% | |
| 13 mei 2015 | Logos International Sicav-Fis * | 0,42% | |
| 12 mei 2015 | Elliott Capital Advisors L.P * | 2,38% | |
| 11 mei 2015 | Elliott Capital Advisors L.P * | 2,44% | |
| 30 april 2015 | Logos International Sicav-Fis * | 0,52% | |
| 29 april 2015 | Cheyne Capital Management (UK) LLP | 2,38% | |
| 28 april 2015 | Cheyne Capital Management (UK) LLP | 2,44% | |
| 24 april 2015 | Elliott Capital Advisors L.P * | 2,59% | |
| 23 april 2015 | Elliott Capital Advisors L.P * | 2,69% | |
| 22 april 2015 | Elliott Capital Advisors L.P * | 2,74% | |
| 22 april 2015 | Logos International Sicav-Fis * | 0,49% | |
| 20 april 2015 | Elliott Capital Advisors L.P * | 2,87% | |
| 17 april 2015 | Elliott Capital Advisors L.P * | 2,90% | |
| 16 april 2015 | Logos International Sicav-Fis * | 0,59% | |
| 18 maart 2015 | Logos International Sicav-Fis * | 0,68% | |
| 17 maart 2015 | Logos International Sicav-Fis * | 0,75% | |
| 6 maart 2015 | Polygon Global Partners LLP | 0,44% | |
| 19 februari 2015 | Polygon Global Partners LLP | 0,55% | |
| 10 februari 2015 | Cheyne Capital Management (UK) LLP | 2,51% | |
| 9 februari 2015 | Cheyne Capital Management (UK) LLP | 2,48% | |
| 6 februari 2015 | Cheyne Capital Management (UK) LLP | 2,39% | |
| 6 februari 2015 | Logos International Sicav-Fis * | 0,83% | |
| 4 februari 2015 | Cheyne Capital Management (UK) LLP | 2,23% | |
| 3 februari 2015 | Cheyne Capital Management (UK) LLP | 2,18% | |
| 3 februari 2015 | Logos International Sicav-Fis * | 0,73% | |
| 30 januari 2015 | Cheyne Capital Management (UK) LLP | 2,01% | |
| 29 januari 2015 | Polygon Global Partners LLP | 0,69% | |
| 28 januari 2015 | Elliott Capital Advisors L.P * | 3,04% | |
| 27 januari 2015 | Elliott Capital Advisors L.P * | 2,95% | |
| 27 januari 2015 | Cheyne Capital Management (UK) LLP | 1,83% | |
| 26 januari 2015 | Elliott Capital Advisors L.P * | 2,83% | |
| 23 januari 2015 | Elliott Capital Advisors L.P * | 2,66% | |
| 23 januari 2015 | Cheyne Capital Management (UK) LLP | 1,70% | |
| 23 januari 2015 | Polygon Global Partners LLP | 0,73% | |
| 23 januari 2015 | Logos International Sicav-Fis * | 0,64% | |
| 19 januari 2015 | Elliott Capital Advisors L.P * | 2,44% | |
| 16 januari 2015 | Elliott Capital Advisors L.P * | 2,20% | |
| 16 januari 2015 | Polygon Global Partners LLP | 0,66% | |
| 7 januari 2015 | Cheyne Capital Management (UK) LLP | 1,48% | |
| 6 januari 2015 | Elliott Capital Advisors L.P * | 1,75% | |
| 6 januari 2015 | Cheyne Capital Management (UK) LLP | 1,27% | |
| 6 januari 2015 | Falcon Edge Capital, LP | 0,23% | |
| 5 januari 2015 | Falcon Edge Capital, LP | 0,82% | |
| 5 januari 2015 | Cheyne Capital Management (UK) LLP | 0,72% | |
| 18 december 2014 | Polygon Global Partners LLP | 0,54% | |
| 17 december 2014 | Elliott Capital Advisors L.P * | 1,62% | |
| 16 december 2014 | Elliott Capital Advisors L.P * | 1,73% | |