X0306 4 2016-01-14 0 0000073020 NORTHWEST NATURAL GAS CO NWN 0001192773 DODSON MARK S 220 NW SECOND AVENUE PORTLAND OR 97209 1 0 0 0 Common Stock 2016-01-14 4 J 0 2796 0 D 8420.024 I See Footnote Common Stock 2016-01-14 4 J 0 2796 0 A 8220 I By Trust Common Stock 2016-01-14 4 S 0 943 50.4725 D 7477.024 I See Footnote Common Stock 158 D Shares were distributed from Deferred Compensation Plan for Directors and Executives (DCP) account to a trust account for the benefit of the reporting person's spouse pursuant to reporting person's election on 12/10/2007 with regard to his election to participate in the DCP. Reflects shares that have been credited to reporting person's account under the issuer's DCP. These shares are held in a trust for the benefit of the reporting person's spouse. The filing of this report is not an admission that the reporting person is the beneficial owner of these securities for purposes of Section 16 or for any other purpose. These shares were issued in connection with the Reporting Person's election on 12/10/2007 to participate in the issuer's DCP, which specifies that taxes shall be withheld from distributions. Pursuant to the DCP and the Reporting Person's election on 12/10/2007, these shares were sold to pay taxes on the DCP distribution made on 1/14/2016. Shawn M. Filippi, Attorney-in-Fact 2016-01-19