X0206 3 2016-09-30 0 0000073020 NORTHWEST NATURAL GAS CO NWN 0001686243 Palfreyman Justin 220 NW SECOND AVENUE PORTLAND OR 97209 0 1 0 0 VP of Business Development Common Stock 2580 D Common stock pursuant to restricted stock units (RSUs) that were granted under Northwest Natural Gas Company's Long Term Incentive Plan. The RSUs shall vest in one fifth on March 1, 2018, 2019 and 2010, and two fifths on March 1, 2021. Shawn M. Filippi, Attorney-in-Fact 2016-10-05