X0306 4 2015-03-02 0 0000073020 NORTHWEST NATURAL GAS CO NWN 0001407314 Peverett Jane L 220 NW SECOND AVENUE PORTLAND OR 97209 1 0 0 0 Common Stock 2015-03-02 4 I 0 395.795 46.10 A 14926.893 I See Footnote Common Stock 1000 D Shares have been credited to reporting person's account under the issuer's Deferred Compensation Plan for Directors and Executives. Shawn M. Filippi, Attorney-in-Fact 2015-03-04