UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2021 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from ___________ to____________ Commission file number 1-38681 Commission file number 1-15973 | NORTHWEST NATURAL HOLDING COMPANY | | | | NORTHWEST NATURAL GAS COMPANY | | | ...

Northwest Natural Holding Company (NYSE:NWN) Q4 2020 Earnings Conference Call February 26, 2021 11:00 AM ET Company Participants Nikki Sparley - Director, IR David Anderson - President, CEO & Director Frank Burkhartsmeyer - SVP & CFO Kimberly Heiting - SVP, Operations & CMO Justin Palfreyman - VP Strategy and Business Development Conference Call Participants Chris Ellinghaus - Siebert Williams Selman Akyol - Stifel Operator Good day and welcome to the Northwest Natural Holding Company Fourth Quarter 2020 Ea ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2020 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from ___________ to___________ NORTHWEST NATURAL HOLDING COMPANY NORTHWEST NATURAL GAS COMPANY (Exact name of registrant as specified in its charter) (Exact name of registrant as ...

INVESTOR PRESENTATION Virtual Investor Meetings December 2020 INVESTOR INFORMATION NW Natural Holdings 250 SW Taylor Street Portland, OR 97204 nwnaturalholdings.com Nikki Sparley Director, Investor Relations (503) 721-2530 nikki.sparley@nwnatural.com COMPANY INFORMATION FORWARD LOOKING STATEMENTS This and other presentations made by NW Natural Holdings from time to time, may contain forward-looking statements within the meaning of the U.S. Private Securities Litigation Reform Act of 1995, which are subject ...

Northwest Natural Holding Co. (NYSE:NWN) Q3 2020 Earnings Conference Call November 5, 2020 11:00 AM ET Company Participants Nikki Sparley - Director, IR David Anderson - President, CEO & Director Frank Burkhartsmeyer - SVP & CFO Kimberly Heiting - SVP, Operations & CMO Justin Palfreyman - VP Strategy and Business Development Conference Call Participants Operator Good morning and welcome to the NW Natural Third Quarter 2020 Earnings Conference Call. All participants are in a listen-only mode. [Operator Instr ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2020 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from ___________ to____________ Commission file number 1-38681 Commission file number 1-15973 NORTHWEST NATURAL HOLDING COMPANY NORTHWEST NATURAL GAS COMPANY (Exact name ...

Northwest Natural Holding Co. (NYSE:NWN) Q2 2020 Earnings Conference Call August 7, 2020 11:00 AM ET Company Participants Nikki Sparley - Director, Investor Relations David Anderson - President, Chief Executive Officer & Director Frank Burkhartsmeyer - Senior Vice President & Chief Financial Officer Justin Palfreyman - Vice President of Strategy & Business Development Kimberly Heiting - Senior Vice President, Operations & Chief Marketing Officer Conference Call Participants Aga Zmigrodzka - UBS Investment B ...

| ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 | | | | | --- | --- | --- | --- | | For the quarterly period ended June 30, 2020 | | | | | OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 | | | | | For the transition period from ___________ to____________ | | | | | Commission file number 1-38681 Commission file number 1-15973 | | | | | NORTHWEST NATURAL HOLDING COMPANY NORTHWEST NATURAL GAS COMPANY | | | | | (Exact name ...

Northwest Natural Holding Co (NYSE:NWN) Q1 2020 Earnings Conference Call May 8, 2020 11:00 AM ET Company Participants Nikki Sparley - Director, IR David Anderson - President, CEO & Director Frank Burkhartsmeyer - SVP & CFO Conference Call Participants Tate Sullivan - Maxim Group Aga Zmigrodzka - UBS Investment Bank Operator Good morning, and welcome to the NW Natural Holding Company's first quarter conference call. [Operator Instructions]. Please note, this event is being recorded. I would now like to turn ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q | QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 | | | --- | --- | | For the quarterly period ended March 31, 2020 OR | | | TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 | ☐ | | For the transition period from ___________ to____________ | | | Commission file number 1-38681 Commission file number 1-15973 | | | NORTHWEST NATURAL HOLDING COMPANY NO ...