X0306 4 2014-02-26 0 0000073020 NORTHWEST NATURAL GAS CO NWN 0001383980 White J Keith 220 NW SECOND AVENUE PORTLAND OR 97209 0 1 0 0 VP Common Stock 2014-02-26 4 A 0 582 0 A 7814.856 I See Footnote Common Stock 2014-02-26 4 A 0 550 0 A 3326. D Common Stock 792.1846 I See Footnote Shares are issuable as a result of satisfaction of performance goals for 2011-2013 under a performance share award, and credited to reporting person's account under the issuer's Deferred Compensation Plan for Directors and Executives pursuant to a prior election. Organization and Executive Compensation Committee certification of the award payout level occurred on the transaction date. Reflects shares that have been credited to reporting person's account under the issuer's Deferred Compensation Plan for Directors and Executives. Shares are issuable as a result of satisfaction of the performance threshold for 2013 under restricted stock unit awards. Organization and Executive Compensation Committee certification of the satisfaction of the performance threshold occurred on the transaction date. Shares held in reporting person's account under Northwest Natural Gas Company's Retirement K Savings Plan as of January 31, 2014. Shawn M. Filippi, Attorney-in-Fact 2014-02-28