| 12 sept. 2014 | OTHER | AEROFLEX HOLDING CORP. | 15 504 791 | — | |
| 11 déc. 2013 | SALE | U.S. SILICA HOLDINGS, INC. | 4 517 582 | 34.70 USD | |
| 05 déc. 2013 | OTHER | U.S. SILICA HOLDINGS, INC. | 8 889 | 0.00 USD | |
| 20 nov. 2013 | SALE | U.S. SILICA HOLDINGS, INC. | 1 196 000 | 30.70 USD | |
| 14 nov. 2013 | SALE | U.S. SILICA HOLDINGS, INC. | 11 853 589 | 30.70 USD | |
| 07 nov. 2013 | OTHER | U.S. SILICA HOLDINGS, INC. | 25 411 | 0.00 USD | |
| 11 juin 2013 | SALE | U.S. SILICA HOLDINGS, INC. | 13 800 000 | 18.76 USD | |
| 19 mars 2013 | SALE | U.S. SILICA HOLDINGS, INC. | 9 775 000 | 21.12 USD | |
| 06 févr. 2012 | SALE | U.S. SILICA HOLDINGS, INC. | 8 804 552 | 15.81 USD | |