UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K [X] ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2018 220 N.W. Second Avenue, Portland, Oregon 97209 (Address of principal executive offices) (Zip Code) Registrant's telephone number: (503) 226-4211 Securities registered pursuant to Section 12(b) of the Act: Northwest Natural Holding Company Common Stock New York Stock Exchange Northwest Natural Gas ...

Northwest Natural Holding Co (NYSE:NWN) Q4 2018 Earnings Conference Call March 1, 2019 11:00 AM ET Company Participants Nikki Sparley - Director of Investor Relations David Anderson - President and Chief Executive Officer Frank Burkhartsmeyer - Senior Vice President and Chief Financial Officer Marty Cresalia - Accounting Manager Justin Palfreyman - Vice President, Strategy and Business Development Conference Call Participants Aga Zmigrodzka - UBS Jasmine Zhang - Bank of America Merrill Lynch Tate Sullivan - ...