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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
73020	Northwest Natural Gas Co	NWN	Natural Gas Distribution (4924)	930256722

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1457484	Alex C. Miller	220 Nw Second Avenue Portland OR 97209	Vp	No	Yes	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock	Acquisiton	2010-09-20	1,500	$34.29	1,940	No	4	M	Direct
Common Stock	Disposition	2010-09-20	1,500	$47.00	440	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	M	Direct
No	4	S	Direct

Reported Derivative Transactions

Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Common Stock	Employee Stock Option to Buy	Disposition	2010-09-20	1,500	$0.00	1,500	$34.29

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
0		2016-02-29	No	4	M	Direct

Reported Non-Derivative Holdings

Sec. Name	Remaning Holdings	Nature of Ownership	Explanation
Common Stock	504	Indirect	See Footnote

Reported Derivative Holdings

Sec. Name	Sec. Type	Price	Expiration Date	Amount	Remaning Holdings	Nature of Ownership
Common Stock	Employee Stock Option to Buy	$44.48	2017-02-28	1,500	1,500	Direct
Common Stock	Employee Stock Option to Buy	$43.29	2018-03-06	1,500	1,500	Direct
Common Stock	Employee Stock Option to Buy	$41.15	2019-03-04	2,000	2,000	Direct
Common Stock	Employee Stock Option to Buy	$44.25	2020-03-02	2,000	2,000	Direct

Expiration Date	Amount	Remaning Holdings	Nature of Ownership
2017-02-28	1,500	1,500	Direct
2018-03-06	1,500	1,500	Direct
2019-03-04	2,000	2,000	Direct
2020-03-02	2,000	2,000	Direct

Footnotes

Shares held in reporting person's account under Northwest Natural Gas Company's Retirement K Savings Plan as of August 31, 2010.
Option was granted for 2,500 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 1,500 shares pursuant to Northwest Natural Gas Company's Restated Stock Option Plan (the "Plan"). The option vests in installments of 375 shares on each of February 21, 2008 and January 1, 2009, 2010 and 2011.
Option was granted for 1,500 shares pursuant to Northwest Natural Gas Company's Restated Stock Option Plan (the "Plan"). The option vests in installments of 375 shares on each of February 27, 2009 and January 1, 2010, 2011 and 2012.
Option was granted for 2,000 shares pursuant to Northwest Natural Gas Company's Restated Stock Option Plan (the "Plan"). The option vests in installments of 500 shares on each of February 25, 2010 and January 1, 2011, 2012 and 2013.
Option was granted for 2,000 shares pursuant to Northwest Natural Gas Company's Restated Stock Option Plan (the "Plan"). The option vests in installments of 500 shares on each of February 24, 2011 and January 1, 2012, 2013 and 2014.