Technology >> CEO Interviews >> October 18, 2004

LUDGER VIEFHUES – MATTSON TECHNOLOGY INC (MTSN)

LUDGER VIEFHUES is Chief Financial Officer and Vice President of Finance at Mattson Technology, Inc. Mr. Viefhues started his career in 1968 in the VEBA Group, with assignments in Germany in finance, controlling, operations and general management. From 1989 to 1992, Mr. Viefhues served as the Chief Financial Officer of MEMC Electronic Materials, St. Louis, Missouri. In 1993, he was appointed as the Chief Financial Officer of Huels AG and Chairman of MEMC before returning to MEMC in St. Louis as the Chief Executive Officer in 1996. Having served on the STEAG Electronic Systems Supervisory Board for several years, Mr. Viefhues joined STEAG RTP Systems as the Chief Financial Officer in 1999 and became CFO for Mattson after it acquired STEAG in 2001. Mr. Viefhues graduated from the University of Muenster, Germany, with a degree in Business Administration. Profile
TWST: Would you begin with a brief historical sketch of Mattson

Technology and a picture of the things you are doing at the present

time?

Mr. Viefhues: We were incorporated in 1988 and have