FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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(Print or Type Responses)

1. Name and Address of Reporting Person * DODSON MARK S   2. Issuer Name and Ticker or Trading Symbol NORTHWEST NATURAL GAS CO [NWN] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) __X__ Director _____ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) 220 NW SECOND AVENUE 3. Date of Earliest Transaction (Month/Day/Year) 01/11/2018 (Street) PORTLAND, OR 97209 4. If Amendment, Date Original Filed(Month/Day/Year) 6. Individual or Joint/Group Filing(Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned

1.Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock 01/11/2018   J   2,944 (1) D $ 0 1,036.491 I See Footnote (2) Common Stock 01/11/2018   J   2,944 (1) A $ 0 13,486 I By Trust (3) Common Stock 01/11/2018   S   0.491 (4) D $ 58.3 1,036 I See Footnote (2) Common Stock 01/11/2018   S   1,036 (5) D $ 56.0531 (6) 0 I See Footnote (2) Common Stock               851 (7) D

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 3)

2. Conversion or Exercise Price of Derivative Security

3. Transaction Date (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

4. Transaction Code (Instr. 8)

5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5)

6. Date Exercisable and Expiration Date (Month/Day/Year)

7. Title and Amount of Underlying Securities (Instr. 3 and 4)

8. Price of Derivative Security (Instr. 5)

9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)

10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)

11. Nature of Indirect Beneficial Ownership (Instr. 4)

Code

V

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
DODSON MARK S 220 NW SECOND AVENUE PORTLAND, OR 97209	X

Signatures

Shawn M. Filippi, Attorney-in-Fact		01/16/2018
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 4(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	Shares were distributed from Deferred Compensation Plan for Directors and Executives (DCP) account to a trust account for the benefit of the reporting person's spouse pursuant to reporting person's election on December 10, 2007 with regard to his election to participate in the DCP.
(2)	Reflects shares that have been credited to reporting person's account under the issuer's DCP.
(3)	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.
(4)	This fractional share was distributed in connection with the Reporting Person's election on December 10, 2007 to participate in the issuer's DCP. Distribution of fractional share was made in cash based on the closing market value on January 3, 2018.
(5)	These shares were issued in connection with the Reporting Person's election on December 10, 2007 to participate in issuer's DCP, which specifies that taxes shall be withheld from distributions. Pursuant to the DCP and the Reporting Person's election on December 10, 2007, these shares were sold to pay taxes on the DCP distribution made on January 11, 2018.
(6)	This transaction was executed in aggregate along with stock sales of other DCP participants who received DCP stock distributions on January 11, 2018 and elected that taxes be withheld (The Transaction). The Transaction was executed in multiple trades on reported date with prices ranging from $56.05 - $56.075, resulting in an average price of $56.0531. Northwest Natural Gas Company will provide upon request by the Commission staff or a security holder of the Issuer full information regarding the number of shares sold at each separate price in the Transaction.
(7)	Includes 328 restricted stock units (RSUs) granted in accordance with the Northwest Natural Gas Company Compensation Policy for Non-employee Directors. These RSUs vest on May 23, 2018.

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