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Filing Details

Accession Number:: 0001140361-10-038115
Form Type:: 4
Zero Holdings:: No
Publication Time:: 2010-09-21 18:37:55
Reporting Period:: 2010-09-17

Filing Date:: 2010-09-21
Accepted Time:: 2010-09-21 18:37:55
SEC Url:: Form 4 Filing

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
1383981	M Grant Yoshihara	220 Nw Second Avenue Portland OR 97209	Vp	No	Yes	No	No

Reported Non-Derivative Transactions

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Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock	Acquisiton	2010-09-17	2,500	$26.30	9,304	No	4	M	Direct
Common Stock	Disposition	2010-09-17	2,500	$46.03	6,804	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

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Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Common Stock	Employee Stock Option to Buy	Disposition	2010-09-17	2,500	$0.00	2,500	$26.30

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
0		2012-03-05	No	4	M	Direct

Reported Non-Derivative Holdings

Sec. Name	Remaning Holdings	Nature of Ownership	Explanation
Common Stock	1,605	Indirect	See Footnote

Reported Derivative Holdings

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Sec. Name	Sec. Type	Price	Expiration Date	Amount	Remaning Holdings	Nature of Ownership
Common Stock	Employee Stock Option to Buy	$31.34	2014-03-04	3,000	3,000	Direct
Common Stock	Employee Stock Option to Buy	$34.29	2016-02-29	2,500	2,500	Direct
Common Stock	Employee Stock Option to Buy	$44.48	2017-02-28	2,000	2,000	Direct
Common Stock	Employee Stock Option to Buy	$43.29	2018-03-06	2,000	2,000	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
2014-03-04	3,000	3,000	Direct
2016-02-29	2,500	2,500	Direct
2017-02-28	2,000	2,000	Direct
2018-03-06	2,000	2,000	Direct
2019-03-04	2,000	2,000	Direct
2020-03-02	2,000	2,000	Direct

Footnotes

The sale of Northwest Natural Gas Company stock took place in 29 separate broker transactions occurring on 9/17/2010. The price in column 4 represents the weighted average sale price for the transactions reported on this line. The range of prices for these transactions was $46.00 - $46.03. Northwest Natural Gas Company will provide upon request by the Commission staff or a security holder of Northwest Natural Gas Company full information regarding the number of shares purchased or sold at each separate price.
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, 2005.
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, 2007.
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 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 February 21, 2008 and January 1, 2009, 2010 and 2011.
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 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 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 February 24, 2011 and January 1, 2012, 2013 and 2014.