X0303 4 2010-01-08 0 0000073020 NORTHWEST NATURAL GAS CO NWN 0001192773 DODSON MARK S 220 NW SECOND AVENUE PORTLAND OR 97209 1 0 0 0 Common Stock 2010-01-08 5 G 0 1722 0 D 19018.9250 I See Footnote Common Stock 2010-01-08 5 G 0 1722 0 A 12431 I By Trust Common Stock 2010-01-08 4 S 0 582 44.6502 D 18436.9250 I See Footnote Common Stock 13000 D Employee Stock Option to Buy 34.29 2011-12-31 Common Stock 23000 23000 D Employee Stock Option to Buy 44.48 2011-12-31 Common Stock 23000 23000 D Employee Stock Option to Buy 43.29 2011-12-31 Common Stock 25000 25000 D 1,722 shares were previously reported as indirectly beneficially owned under the Northwest Natural Gas Company's Deferred Compensation Plan for Directors and Executives but were contributed to the trust referred to in footnote 4 on January 8, 2010. Reflects shares that have been credited to reporting person's account under the issuer's Deferred Compensation Plan for Directors and Executives. Mr. Dodson gifted to the trust referred to in Footnote 4, 351 shares on November 6, 2009 and 1,185 shares on November 23, 2009. These gifts of shares will be reported on a Form 5 for the year ending 2009. 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. On December 23, 2009 the reporting person elected to sell a portion of a distribution under Northwest Natural Gas Company's Deferred Compensation Plan for Directors and Executives on January 8, 2010 to pay for tax withholding on a distribution on that date. Option was granted for 23,000 shares pursuant to Northwest Natural Gas Company's Restated Stock Option Plan (the "Plan"). The option vested in installments of 5,750 shares on each February 22, 2007 and January 1, 2008. Pursuant to the Plan, the remaining 11,500 shares became fully exercisable upon Mr. Dodson's retirement on December 31, 2008. The option expires on December 31, 2011. Option was granted for 23,000 shares pursuant to Northwest Natural Gas Company's Restated Stock Option Plan (the "Plan"). The option vested in installment of 5,750 shares on February 21, 2008. Pursuant to the Plan, the remaining 17,250 shares became fully exercisable upon Mr. Dodson's retirement on December 31, 2008. The option expires on December 31, 2011. Option was granted for 25,000 shares pursuant to Northwest Natural Gas Company's Restated Stock Option Plan (the "Plan"). Pursuant to the Plan, the remaining 25,000 shares became fully exercisable upon Mr. Dodson's retirement on December 31, 2008. The option expires on December 31, 2011. MardiLyn Saathoff, Attorney-in-Fact 2010-01-12