Lewis Chew joined Arista's board in July 2021 and chairs its Audit Committee. He was executive vice president and chief financial officer of Dolby Laboratories from 2012 to 2021 and previously CFO of National Semiconductor, after a career as a partner at KPMG. He holds a B.S. in accounting from Santa Clara University and also serves on the boards of Cadence Design Systems and Intuitive Surgical.