X0306 4 2018-04-26 0 0000704532 NANOMETRICS INC NANO 0001723434 Lesaicherre Pierre-Yves C/O NANOMETRICS, INCORPORATED 1550 BUCKEYE DRIVE MILPITAS CA 95035 1 1 0 0 President and CEO Common Stock 2018-04-26 4 A 0 25662 0.00 A 85142 D Performance Stock Units 2018-04-26 4 A 0 38493 0.00 A 2021-02-23 Common Stock 38493 38493 D Shares are represented by restricted stock units. Each restricted stock unit represents a contingent right to receive one share of NANO common stock. The restricted stock units vest on an annual basis, in equal 1/3rd increments, on February 23 in 2019, 2020 and 2021. Shares are represented by performance stock units. Each performance stock unit represents a contingent right to receive one share of NANO common stock. The performance stock units vest in equal target increments, on February 23 in 2019, 2020 and 2021, provided that certain price performance targets are met. /s/ Janet Taylor, Attorney-in-Fact 2018-04-30