Proofpoint, Inc. announced its board of directors has appointed Richard Wallace as a new independent director, effective May 9, 2017. Mr. Wallace currently serves as chief executive officer and president and as a member of the board of directors of KLA-Tencor Corporation. Mr. Wallace began as an applications engineer at KLA Instruments in 1988, and has held various general management positions throughout his 29-year tenure with the company. Earlier in his career, he held positions with Ultratech Stepper and Cypress Semiconductor.