Page 1

☑ 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 June 30 , 2021 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from NW Natural HOLDINGS ™ NORTHWEST NATURAL HOLDING COMPANY ( Exact name of registrant as specified in its charter ) Commission file number Oregon ( State or other jurisdiction of incorporation or organization ) 250 SW Taylor Street Portland Oregon ( Address of principal executive offices ) Registrant's telephone number : 1-38681 82-4710680 ( I.R.S. Employer Identification No. ) 97204 ( Zip Code ) ( 503 ) 226-4211 Securities registered pursuant to Section 12 ( b ) of the Act : Registrant NORTHWEST NATURAL HOLDING COMPANY NORTHWEST NATURAL GAS COMPANY to NW NaturalⓇ NORTHWEST NATURAL GAS COMPANY ( Exact name of registrant as specified in its charter ) Commission file number Oregon ( State or other jurisdiction of incorporation or organization ) 250 SW Taylor Street Portland Oregon ( Address of principal executive offices ) Registrant's telephone number : Title of each class Common Stock Trading Symbol NWN None 1-15973 93-0256722 ( I.R.S. Employer Identification No. ) 97204 ( Zip Code ) ( 503 ) 226-4211 Name of each exchange on which registered New York Stock Exchange Indicate by check mark whether the registrant ( 1 ) has filed all reports required to be filed by Section 13 or 15 ( d ) of the Securities Exchange Act of 1934 during the preceding 12 months ( or for such shorter period that the registrant was required to file such reports ) , and ( 2 ) has been subject to such filing requirements for the past 90 days . NORTHWEST NATURAL HOLDING COMPANY Yes ☑ No ☐ NORTHWEST NATURAL GAS COMPANY ☑ No ☐ Yes Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S - T ( §232.405 of this chapter ) during the preceding 12 months ( or for such shorter period that the registrant was required to submit such files ) . NORTHWEST NATURAL HOLDING COMPANY NORTHWEST NATURAL GAS COMPANY Yes No ☐ Indicate by check mark whether the registrant is a large accelerated filer , an accelerated filer , a non - accelerated filer , a smaller reporting company , or an emerging growth company . See the definitions of " large accelerated filer , " " accelerated filer " , " smaller reporting company " and " emerging growth company " in Rule 12b - 2 of the Exchange Act . Yes NORTHWEST NATURAL HOLDING COMPANY Large Accelerated Filer Accelerated Filer Non - accelerated Filer Smaller Reporting Company Emerging Growth Company ☑ No ☐ ☑ ☐ ☐ NORTHWEST NATURAL GAS COMPANY Large Accelerated Filer Accelerated Filer Non - accelerated Filer Smaller Reporting Company Emerging Growth Company ☑ oooo If an emerging growth company , indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13 ( a ) of the Exchange Act . Indicate by check mark whether the registrant is a shell company ( as defined in Rule 12b - 2 of the Exchange Act ) . NORTHWEST NATURAL HOLDING COMPANY Yes ㅁ No ☑ NORTHWEST NATURAL GAS COMPANY Yes ☐ No At July 23 , 2021 , 30,672,722 shares of Northwest Natural Holding Company's Common Stock ( the only class of Common Stock ) were outstanding . All shares of Northwest Natural Gas Company's Common Stock ( the only class of Common Stock ) outstanding were held by Northwest Natural Holding Company . ☑ This combined Form 10 - Q is separately filed by Northwest Natural Holding Company and Northwest Natural Gas Company . Information contained in this document relating to Northwest Natural Gas Company is filed by Northwest Natural Holding Company and separately by Northwest Natural Gas Company . Northwest Natural Gas Company makes no representation as to information relating to Northwest Natural Holding Company or its subsidiaries , except as it may relate to Northwest Natural Gas Company and its subsidiaries .