| SC 13G/A | 2008-02-13 | COOKE & BIELER LP | ENTEGRIS INC | 8,822,161 | 7.6% | EDGAR |
| SC 13G | 2008-02-06 | DIMENSIONAL FUND ADVISORS INC | ENTEGRIS INC | 9,895,584 | 8.6% | EDGAR |
| SC 13G | 2008-02-01 | WELLS FARGO & CO/MN | ENTEGRIS INC | 6,042,114 | 5.2% | EDGAR |
| SC 13G/A | 2007-02-13 | COOKE & BIELER LP | ENTEGRIS INC | 8,944,033 | 6.8% | EDGAR |
| SC 13G/A | 2007-02-12 | PRICE T ROWE ASSOCIATES INC /MD/ | ENTEGRIS INC | 13,182,060 | 9.9% | EDGAR |
| SC 13G/A | 2007-02-09 | Catenacci Gerald | ENTEGRIS INC | 127,228 | 0.1% | EDGAR |
| SC 13G/A | 2007-01-18 | WCB HOLDINGS LLC | ENTEGRIS INC | 3,598,508 | 2.7% | EDGAR |
| SC 13G | 2006-11-08 | Catenacci Gerald | ENTEGRIS INC | 141,528 | 0.1% | EDGAR |
| SC 13G/A | 2006-02-15 | COOKE & BIELER LP | ENTEGRIS INC | 9,095,950 | 6.7% | EDGAR |
| SC 13G/A | 2006-02-15 | COOKE & BIELER LP | ENTEGRIS INC | 9,095,950 | 6.7% | EDGAR |
| SC 13G | 2006-02-14 | PRICE T ROWE ASSOCIATES INC /MD/ | ENTEGRIS INC | 12,136,817 | 8.9% | EDGAR |
| SC 13G/A | 2006-02-10 | WCB HOLDINGS LLC | ENTEGRIS INC | 11,865,608 | 8.7% | EDGAR |
| SC 13G/A | 2006-02-09 | ROYCE & ASSOCIATES LLC | ENTEGRIS INC | 3,563,700 | 2.6% | EDGAR |
| SC 13G/A | 2005-02-14 | ENTEGRIS INC EMPLOYEE STOCK OWNERSHIP PLAN | ENTEGRIS INC | 6,191,953 | 8.4% | EDGAR |
| SC 13G/A | 2005-02-14 | DAUWALTER JAMES E | ENTEGRIS INC | 4,373,328 | 5.9% | EDGAR |
| SC 13G/A | 2005-02-14 | WCB HOLDINGS LLC | ENTEGRIS INC | 13,865,608 | 18.8% | EDGAR |
| SC 13G | 2005-02-07 | COOKE & BIELER LP | ENTEGRIS INC | 5,258,805 | 7.1% | EDGAR |
| SC 13G | 2005-01-27 | ROYCE & ASSOCIATES LLC | ENTEGRIS INC | 3,887,200 | 5.3% | EDGAR |
| SC 13D | 2004-08-26 | ENTEGRIS INC | METRON TECHNOLOGY N V | - | 8.2% | EDGAR |
| SC 13G/A | 2004-02-11 | DAUWALTER JAMES E | ENTEGRIS INC | 4,383,829 | 5.9% | EDGAR |