X0201 4 2003-09-08 0 0000073020 NORTHWEST NATURAL GAS CO NWN 0001192778 FELTZ STEPHEN P 220 N.W. 2ND AVENUE PORTLAND OR 97209 0 1 0 0 Treasurer and Controller Common Stock, $3-1/6 par value 2003-09-08 4 M 0 2000 20.25 A 3416 D Common Stock, $3-1/6 par value 2003-09-08 4 S 0 300 29.77 D 3116 D Common Stock, $3-1/6 par value 2003-09-08 4 S 0 1700 29.70 D 1416 D Common Stock, $3-1/6 par value 69.023 I See footnote Common Stock, $3-1/6 par value 3.023 I See footnote Common Stock, $3-1/6 par value 1824.885 I See footnote Option to Buy 20.25 2003-09-08 4 M 0 2000 0 D 2010-03-02 Common Stock 2000 3000 D Held by reporting person as custodian under the Oregon Uniform Transfers to Minors Act for Grant M. Feltz. Held by reporting person as custodian under the Oregon Uniform Transfers to Minors Act for Callista E. Feltz. Held in reporting person's account under issuer's Retirement K Savings Plan as of 8-31-2003. On February 23, 2000, option was granted for 5,000 shares pursuant to the Northwest Natural Gas Company 1985 Stock Option Plan (now the Restated Stock Option Plan). Option on 1,700 shares became exercisable on February 23, 2001, option on 1,700 shares became exercisable on January 1, 2002 and option on 1,600 shares became exercisable on January 1, 2003. /s/ C.J. Rue, Attorney-in-Fact 2003-09-08