Entegris, Inc. Announces Acquisition and Employment Inducement Restricted Stock Awards

| Source: Entegris, Inc.

CHASKA, Minn., Dec. 20, 2007 (PRIME NEWSWIRE) -- Entegris, Inc. (Nasdaq:ENTG) today announced that employment inducement restricted stock awards covering an aggregate of 32,500 shares had been granted on December 17, 2007 to three newly hired employees of Entegris, Inc. These awards comprised: 15,000 shares granted to Justin Wang, V.P. and Managing Director for Asia; 7,500 shares granted to Jim Wiese, V.P. of Tax; and 10,000 shares granted to Larry Tan, V.P. of Human Resources for Asia. In accordance with NASDAQ Rule 4350(i)(1)(A), these restricted stock awards were made under a stock option plan without stockholder approval. Rule 4350(i)(1)(A) requires public announcement of option grants made under this type of plan.

All of the above restricted stock awards were granted on terms that include the following: (i) the shares are subject to restriction on transfer and are subject to forfeiture in the event of termination of employment for any reason prior to the lapse of such restrictions; (ii) lapsing of restrictions with respect to 25% of the shares on each anniversary of the award date until fully vested.

About Entegris

Entegris delivers a wide range of products for purifying, protecting and transporting critical materials used in processing and manufacturing in semiconductor and other high-tech industries. Entegris is ISO 9001 certified and has manufacturing, customer service and/or research facilities in the United States, China, France, Germany, Israel, Japan, Malaysia, Singapore, South Korea and Taiwan. Additional information can be found at www.entegris.com.

Entegris, Inc.
Steve Cantor, VP of Corporate Relations