X0303 4 2009-09-01 0001101302 ENTEGRIS INC ENTG 0001198621 BRADLEY MICHAEL A 8 BARNSTABLE ROAD WEST NEWTON MA 02465 1 0 0 0 Common Stock 2009-09-01 4 A 0 3438 13750.00 A 121143 D These shares are unrestricted and were awarded in connection with a forfeiture of quarterly cash directors fees. The number of shares covered by this award was determined by dividing the cash amount of directors fees forfeited for the quarter that would have been paid on September 1st by the closing price of the stock on the immediately preceding trading day of $4.00 per share. /s/ Peter W. Walcott attorney-in-fact for Michael A. Bradley 2009-09-01