CHASKA, Minn.--(BUSINESS WIRE)--Jan. 23, 2006--Entegris, Inc. (NASDAQ:ENTG), the global leader in materials integrity management, today announced that employment inducement restricted stock awards covering an aggregate of 53,300 shares had been granted on January 18, 2006, to two newly hired employees of Entegris, Inc. These awards comprised an employment inducement restricted stock award covering an aggregate of 50,000 shares granted to John J. Murphy, the recently appointed senior vice president of human resources, and of 3,300 shares granted to David Van Sant, the companies new manager of international tax. 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. Both 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 is the global leader in materials integrity management - purifying, protecting and transporting critical materials used in high technology products, processes and services. Entegris and Mykrolis completed their merger to create the new Entegris in August 2005. The merged company delivers technology, product and service solutions to the 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, Japan, Malaysia, Singapore, South Korea and Taiwan. Additional information can be found at www.entegris.com.

    CONTACT: Entegris, Inc.
             Steve Cantor, 978-436-6750
             irelations@entegris.com
             or
             Bill Paterson, 952-556-4155
             bill_paterson@entegris.com

    SOURCE: Entegris, Inc.