X0202 4 2006-01-04 0001101302 ENTEGRIS INC ENTG 0001208109 GRAVES GREGORY B 4613 DREXEL AVE. S. EDINA MN 55424 0 1 0 0 SR V.P.-Strat.Planning/Bus.Dev Common Stock 2006-01-04 4 S 0 5 9.46 D 120460 D Common Stock 2006-01-04 4 S 0 7 9.47 D 120453 D Common Stock 2006-01-04 4 S 0 131 9.49 D 120322 D Common Stock 2006-01-04 4 S 0 204 9.50 D 120118 D Common Stock 2006-01-04 4 S 0 359 9.51 D 119759 D Common Stock 2006-01-04 4 S 0 1094 9.52 D 118665 D Common Stock 2006-01-04 4 S 0 364 9.53 D 118301 D Common Stock 2006-01-04 4 S 0 535 9.54 D 117766 D Common Stock 2006-01-04 4 S 0 667 9.55 D 117099 D Common Stock 2006-01-04 4 S 0 473 9.56 D 116626 D Common Stock 2006-01-04 4 S 0 323 9.57 D 116303 D Common Stock 2006-01-04 4 S 0 754 9.58 D 115549 D Common Stock 2006-01-04 4 S 0 768 9.59 D 114781 D Common Stock 2006-01-04 4 S 0 1248 9.60 D 113533 D Common Stock 2006-01-04 4 S 0 934 9.61 D 112599 D Common Stock 2006-01-04 4 S 0 864 9.62 D 111735 D Common Stock 2006-01-04 4 S 0 684 9.63 D 111051 D Common Stock 2006-01-04 4 S 0 393 9.64 D 110658 D Common Stock 2006-01-04 4 S 0 587 9.65 D 110071 D Common Stock 2006-01-04 4 S 0 636 9.66 D 109435 D Common Stock 2006-01-04 4 S 0 167 9.67 D 109268 D Common Stock 2006-01-04 4 S 0 468 9.68 D 108800 D Common Stock 2006-01-04 4 S 0 396 9.69 D 108404 D Common Stock 2006-01-04 4 S 0 211 9.70 D 108193 D Common Stock 2006-01-04 4 S 0 109 9.71 D 108084 D Common Stock 2006-01-04 4 S 0 146 9.72 D 107938 D Common Stock 2006-01-04 4 S 0 29 9.73 D 107909 D These shares were sold pursuant to a Rule 10b5-1 Trading Plan established by the reporting person on October 31, 2005 to provide cash to pay taxes owed to the issuer with respect to the partial lapse of restrictions on a restricted stock award dated August 10, 2005. /s/ Peter W. Walcott, Attorney-in-fact for Gregory B. Graves 2006-01-06