X0304 4 2012-02-29 0 0000073020 NORTHWEST NATURAL GAS CO NWN 0001192777 DOOLITTLE LEA ANNE 220 NW SECOND AVENUE PORTLAND OR 97209 0 1 0 0 SVP Common Stock 2012-02-29 4 F 0 152 0 D 2555.5337 D Common Stock 6805.1872 I See Footnote Common Stock 445.963 I See Footnote Common Stock 1027.332 I See Footnote Common Stock 202.8213 I See Footnote Common Stock 162.8426 I See Footnote Employee Stock Option to Buy 31.34 2014-03-04 Common Stock 3000 3000 D Employee Stock Option to Buy 34.29 2016-02-29 Common Stock 3000 3000 D Employee Stock Option to Buy 44.48 2017-02-28 Common Stock 3000 3000 D Employee Stock Option to Buy 43.29 2018-03-06 Common Stock 4000 4000 D Employee Stock Option to Buy 41.15 2019-03-04 Common Stock 3000 3000 D Employee Stock Option to Buy 44.25 2020-03-02 Common Stock 3000 3000 D Employee Stock Option to Buy 45.74 2021-03-02 Common Stock 5000 5000 D Employee Stock Option to Buy 44.48 2017-02-28 Common Stock 600 600 I See Footnote Employee Stock Option to Buy 43.29 2018-03-06 Common Stock 1200 1200 I See Footnote Employee Stock Option to Buy 41.15 2019-03-04 Common Stock 1000 1000 I See Footnote Employee Stock Option to Buy 44.25 2020-03-02 Common Stock 1000 1000 I See Footnote Shares were withheld by the issuer to cover withholding taxes on issuance of performance shares. Organization and Executive Compensation Committee certification of the payout of these performance shares was reported on Form 4 filed on February 23, 2012. Held in reporting person's account under issuer's Retirement K Savings Plan as of February 29, 2012. Shares have been credited to reporting person's account under the issuer's Executive Deferred Compensation Plan. Shares have been credited to reporting person's account under the issuer's Deferred Compensation Plan for Directors and Executives. Held in account of reporting person's spouse. Held in account of reporting person's spouse under the issuer's Retirement K Savings Plan as of February 29, 2012. Option was granted for 5,000 shares pursuant to Northwest Natural Gas Company's Restated Stock Option Plan (the "Plan"). The option fully vested on January 1, 2007. Option was granted for 3,000 shares pursuant to Northwest Natural Gas Company's Restated Stock Option Plan (the "Plan"). The option fully vested on January 1, 2010. Option was granted for 3,000 shares pursuant to Northwest Natural Gas Company's Restated Stock Option Plan (the "Plan"). The option fully vested on January 1, 2011. Option was granted for 4,000 shares pursuant to Northwest Natural Gas Company's Restated Stock Option Plan (the "Plan"). The option fully vested on January 1, 2012. Option was granted for 3,000 shares pursuant to Northwest Natural Gas Company's Restated Stock Option Plan (the "Plan"). The option vests in installments of 750 shares on each February 25, 2010 and January 1, 2011, 2012, and 2013. Option was granted for 3,000 shares pursuant to Northwest Natural Gas Company's Restated Stock Option Plan (the "Plan"). The option vests in installments of 750 shares on each February 24, 2011 and January 1, 2012, 2013 and 2014. Option for 600 shares was granted to reporting person's spouse pursuant to Northwest Natural Gas Company's Restated Stock Option Plan (the "Plan"). The option fully vested on January 1, 2011. Option for 1,200 shares was granted to reporting person's spouse pursuant to Northwest Natural Gas Company's Restated Stock Option Plan (the "Plan"). The option fully vested on January 1, 2012. Option for 1,000 shares was granted to reporting person's spouse pursuant to Northwest Natural Gas Company's Restated Stock Option Plan (the "Plan"). The option vests in installments of 250 shares on each February 25, 2010 and January 1, 2011, 2012, and 2013. Option for 1,000 shares was granted to reporting person's spouse pursuant to Northwest Natural Gas Company's Restated Stock Option Plan (the "Plan"). The option vests in installments of 250 shares on each February 24, 2011 and January 1, 2012, 2013, and 2014. Option was granted for 5,000 shares pursuant to Northwest Natural Gas Company's Restated Stock Option Plan (the "Plan"). The option vests in installments of 1,250 shares on each February 23, 2012 and January 1, 2013, 2014 and 2015. Shawn M. Filippi, Attorney-in-Fact 2012-03-02