X0306 4 2020-03-26 0001001385 NORTHWEST PIPE CO NWPX 0001445525 Kendrick Megan A. 201 NE PARK PLAZA DRIVE SUITE 100 VANCOUVER WA 98684 1 VP of Human Resources Common Stock 485 D Restricted Stock 2020-03-26 4 A 0 844 A Common Stock 844 1410 D Performance Shares 2020-03-26 4 A 0 2533 A Common Stock 2533 5080 D Each Restricted Stock Unit represents a contingent right to receive one share of Northwest Pipe Company common stock. The Restricted Stock Units vest in installments as follows: 1/3 on January 15, 2021, 1/3 on January 17, 2022 and 1/3 on January 16, 2023. Performance Shares vest in an amount ranging from 0-200% to the extent such Performance Shares are earned. Performance Shares are earned based on Northwest Pipe Company's total EBITDA margin over the measurement period. Performance shares vest in installments as follows: 1/3 March 31, 2021, 1/3 on March 31, 2022 and 1/3 on March 31, 2023. /s/ Megan Kendrick 2020-03-30