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Sue Billat has served as a director of Ultra Clean since March 2004. Ms. Billat has been a principal at Benchmark Strategies, which she founded in 1990, since 2002. Prior to that, she was a Managing Director and senior research analyst for semiconductor equipment and foundries at Robertson Stephens & Company from 1996 to 2002 and senior vice president of marketing for Ultratech Stepper from 1994 to 1996. Ms. Billat is on the board of directors of PDF Solutions. Ms. Billat holds a bachelor of science degree and masters in physics from Georgia Tech and completed further graduate studies in electrical engineering and engineering management at Stanford University. | 