| SC 13G/A | 2004-02-06 | ENTEGRIS INC | METRON TECHNOLOGY N V | 1,158,487 | 9.1% | EDGAR |
| SC 13G/A | 2004-02-06 | WCB HOLDINGS LLC | ENTEGRIS INC | 14,365,608 | 19.2% | EDGAR |
| SC 13G/A | 2004-02-06 | ENTEGRIS INC EMPLOYEE STOCK OWNERSHIP PLAN | ENTEGRIS INC | 7,693,565 | 10.3% | EDGAR |
| SC 13G | 2003-03-10 | HSBC BANK USA | ENTEGRIS INC | 12,707,730 | 18.6% | EDGAR |
| SC 13G/A | 2003-02-13 | ENTEGRIS INC | METRON TECHNOLOGY N V | 1,565,687 | 12.0% | EDGAR |
| SC 13G/A | 2003-02-13 | DAUWALTER JAMES E | ENTEGRIS INC | 4,777,315 | 6.7% | EDGAR |
| SC 13G/A | 2003-02-13 | ENTEGRIS INC EMPLOYEE STOCK OWNERSHIP PLAN | ENTEGRIS INC | 9,593,487 | 13.5% | EDGAR |
| SC 13G/A | 2003-02-13 | WCB HOLDINGS LLC | ENTEGRIS INC | 16,265,608 | 22.8% | EDGAR |
| SC 13G/A | 2002-02-13 | WCB HOLDINGS LLC | ENTEGRIS INC | 17,665,608 | 25.3% | EDGAR |
| SC 13G/A | 2002-02-13 | DAUWALTER JAMES E | ENTEGRIS INC | 5,344,917 | 7.6% | EDGAR |
| SC 13G/A | 2002-02-13 | ENTEGRIS INC EMPLOYEE STOCK OWNERSHIP PLAN | ENTEGRIS INC | 12,707,730 | 18.2% | EDGAR |
| SC 13G/A | 2002-02-13 | ENTEGRIS INC | METRON TECHNOLOGY N V | 1,590,062 | 12.4% | EDGAR |
| SC 13G/A | 2001-05-15 | ENTEGRIS INC | METRON TECHNOLOGY N V | 1,585,376 | 12.4% | EDGAR |
| SC 13G | 2001-02-14 | DAUWALTER JAMES E | ENTEGRIS INC | 5,556,147 | 8.1% | EDGAR |
| SC 13G | 2001-02-14 | ENTEGRIS INC EMPLOYEE STOCK OWNERSHIP PLAN | ENTEGRIS INC | 17,910,514 | 26.2% | EDGAR |
| SC 13G | 2001-02-14 | WCB HOLDING LLC | ENTEGRIS INC | 19,455,608 | 28.4% | EDGAR |
| SC 13G | 2001-02-14 | ENTEGRIS INC | METRON TECHNOLOGY N V | 2,707,564 | 19.5% | EDGAR |
| SC 13G | 2001-02-01 | SELIGMAN J & W & CO INC /NY/ | ENTEGRIS INC | 5,863,370 | 8.6% | EDGAR |