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Filing Details

Accession Number:: 0001140361-10-032393
Form Type:: 4
Zero Holdings:: No
Publication Time:: 2010-08-09 13:00:00
Reporting Period:: 2010-08-05

Filing Date:: 2010-08-09
Accepted Time:: 2010-08-09 18:14:30
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
1192773	S Mark Dodson	220 Nw Second Avenue Portland OR 97209		Yes	No	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	2010-08-05	25,000	$43.29	38,000	No	4	M	Direct
Common Stock	Disposition	2010-08-05	25,000	$47.92	13,000	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	2010-08-05	25,000	$0.00	25,000	$43.29

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
0		2011-12-31	No	4	M	Direct

Reported Non-Derivative Holdings

Sec. Name	Remaning Holdings	Nature of Ownership	Explanation
Common Stock	11,431	Indirect	By Trust
Common Stock	22,718	Indirect	See Footnote

Reported Derivative Holdings

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Sec. Name	Sec. Type	Price	Date	Expiration Date	Amount	Remaning Holdings	Nature of Ownership
Common Stock	Employee Stock Option to Buy	$34.29		2011-12-31	18,000	18,000	Direct

Expiration Date	Amount	Remaning Holdings	Nature of Ownership
2011-12-31	18,000	18,000	Direct

Footnotes

Mark S. Dodson exercised an option to purchase 25,000 shares at $43.29 each and then sold those shares at an average price of $47.9235 each on August 5, 2010 and now directly and indirectly holds a total of 47,149 shares.
The sale of Northwest Natural Gas Company stock took place in 203 seperate broker transactions occurring on 8/5/2010. 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 $47.83-$47.99. 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.
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.
Reflects shares that have been credited to reporting person's account under the issuer's Deferred Compensation Plan for Directors and Executives.
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. This is the same option referred to in Footnote 1.
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.