X0306 4 2020-03-26 0001001385 NORTHWEST PIPE CO NWPX 0001234059 ROMAN RICHARD A 201 NE PARK PLAZA DRIVE SUITE 100 VANCOUVER WA 98684 1 Common Stock 2020-03-26 4 M 0 19860 24.15 A 57503 D Common Stock 2020-03-26 4 F 0 17997 26.65 D 39506 D Common Stock 2020-03-26 4 M 0 4140 24.15 A 43646 D Common Stock 2020-03-26 4 F 0 3752 26.65 D 39894 D Non-Qualified Stock Option 24.15 2020-03-26 4 M 0 19860 24.15 D 2010-03-29 2020-03-29 Common Stock 19860 0 D Incentive Stock Option 24.15 2020-03-26 4 M 0 4140 24.15 D 2010-03-29 2020-03-29 Common Stock 4140 0 D Represents shares withheld by the issuer for payment of exercise price. /s/ Richard A. Roman 2020-03-30