1. ORGANIZATION AND PRINCIPLES OF CONSOLIDATION

On October 1, 2018, Northwest Natural Gas Company (NW Natural) and Northwest Natural Holding Company (NW Holdings) completed the reorganization into a holding company structure. NW Holdings is now the parent holding company of NW Natural, NW Natural Water Company, LLC (NWN Water) and other subsidiaries previously held by NW Natural. For further discussion, see Note 17. These financial statements and accompanying notes are for the period ending September 30, 2018 and reflect the organizational structure prior to the reorganization.

The accompanying consolidated financial statements represent the consolidated results of NW Natural and all companies NW Natural directly or indirectly controlled, either through majority ownership or otherwise as of September 30, 2018. NW Natural's regulated local gas distribution business, referred to as the utility segment, is NW Natural's core operating business and serves residential, commercial, and industrial customers in Oregon and southwest Washington. The other category primarily includes the non-utility portion of the Mist gas storage facility that provides storage services for utilities, gas marketers, electric generators, and large industrial users from facilities located in Oregon. In addition, prior to the reorganization NW Natural held regulated water services, other investments, and other non-utility activities reported as other.

NW Natural's direct and indirect wholly-owned subsidiaries as of September 30, 2018 include:


•	NW Natural Energy, LLC (NWN Energy);


◦	NW Natural Gas Storage, LLC (NWN Gas Storage);


▪	Gill Ranch Storage, LLC (Gill Ranch), which is presented as a discontinued operation;


•	Northwest Energy Corporation (Energy Corp);


◦	NWN Gas Reserves LLC (NWN Gas Reserves);


•	NNG Financial Corporation (NNG Financial);


•	NW Natural Water Company, LLC (NWN Water);


◦	Falls Water Co., Inc. (Falls Water);


◦	Cascadia Water, LLC (Cascadia);


•	Northwest Natural Holding Company (NW Holdings); and


◦	NWN Merger Sub, Inc. (NWN Holdco Sub).

NW Holdings' direct and indirect wholly-owned subsidiaries as of the filing date of this report include:


•	Northwest Natural Gas Company (NW Natural);


◦	Northwest Energy Corporation (Energy Corp);


•	NWN Gas Reserves LLC (NWN Gas Reserves);


•	NW Natural Energy, LLC (NWN Energy);


◦	NW Natural Gas Storage, LLC (NWN Gas Storage);


▪	Gill Ranch Storage, LLC (Gill Ranch), which is presented as a discontinued operation;


•	NNG Financial Corporation (NNG Financial);


•	NW Natural Water Company, LLC (NWN Water);


◦	Falls Water Co., Inc. (Falls Water);


◦	Salmon Valley Water Company;


◦	Cascadia Water, LLC (Cascadia);


◦	NW Natural Water of Oregon, LLC (NWN Water of Oregon);


◦	NW Natural Water of Washington, LLC; and


◦	NW Natural Water of Idaho, LLC.

Investments in corporate joint ventures and partnerships that the registrant does not directly or indirectly control, and for which it is not the primary beneficiary, include NWN Energy's investment in Trail West Holdings, LLC (TWH), which is accounted for under the equity method, and NNG Financial's investment in Kelso-Beaver Pipeline. The consolidated financial statements are presented after elimination of all intercompany balances and transactions. In this report, the term “utility” is used to describe NW Natural's regulated gas distribution business, and the term “non-utility” is used to describe the non-utility portion of the Mist gas storage facility and other non-utility investments and business activities.

Information presented in these interim consolidated financial statements is unaudited, but includes all material adjustments management considers necessary for a fair statement of the results for each period reported including normal recurring accruals. These consolidated financial statements should be read in conjunction with the audited consolidated financial statements and related notes included in NW Natural's 2017 Annual Report on Form 10-K (2017 Form 10-K), taking into consideration the changes mentioned below in this Note 1 and in Notes 4 and 15, as reflected in Exhibit 99.1 to the Current Report on Form 8-K (Form 8-K) filed on September 24, 2018. A significant part of NW Natural's business is of a seasonal nature; therefore, results of operations for interim periods are not necessarily indicative of full year results.

During the second quarter of 2018, we moved forward with NW Natural's long-term strategic plans, which include a shift away from the California gas storage business. In June 2018, NWN Gas Storage, a wholly-owned subsidiary, entered into a Purchase and Sale Agreement that provides for the sale of all of the membership interests in its wholly-owned subsidiary, Gill Ranch, subject to various regulatory approvals and closing conditions. We have concluded that the pending sale of Gill Ranch qualifies as assets and liabilities held for sale and discontinued operations. As such, for all periods presented, the results of Gill Ranch have been presented as a discontinued operation on the consolidated statements of comprehensive income and cash flows, and the assets and liabilities associated with Gill Ranch have been classified as discontinued operations assets and liabilities on the consolidated balance sheets. See Note 16 for additional information. Additionally, we reevaluated reportable segments and concluded that the remaining gas storage activities no longer meet the requirements to be separately reported as a segment. The non-utility portion of the Mist gas storage facility is now reported as other, and all prior periods reflect this change. See Note 4, which provides segment information. These reclassifications had no effect on the prior year's consolidated results of operations, financial condition, or cash flows.

NW Holdings was formed on March 7, 2018. The accompanying financial statements for NW Holdings are provided in accordance with Exchange Act Rules 13a-13 and 15d-13. There was no income statement activity for NW Holdings during the period ended September 30, 2018 and thus no income statement is provided for NW Holdings. Prior to completing the reorganization, NW Holdings received a $20.0 million capital contribution.

Notes to the consolidated financial statements reflect the activity of continuing operations for all periods presented, unless otherwise noted. Note 16 provides information regarding discontinued operations.