NORTHWEST NATURAL GAS CO
For the period ended Sep 30, 2025. Filed Nov 5, 2025.
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A company's report for each of its first three quarters. The financial statements are not audited. It shows how the business has moved since the last annual report, and what management says changed.
Sep 30, 2025 · Filed Nov 5, 2025
NWN$52.02+0.5%Stored close · as of Nov 9, 2026
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Item 6. Exhibits
See the Exhibit Index below, which is incorporated by reference herein.
Exhibit Index to Quarterly Report on Form 10-Q
For the Quarter Ended September 30, 2025
| Exhibit Index | |
|---|---|
| Exhibit Number | Document |
| *3.1 | Amended and Restated Bylaws of Northwest Natural Holding Company (incorporated by reference to Exhibit 3.1 to the Form 8-K filed July 25, 2025, File No. 1-38681) |
| *3.2 | Amended and Restated Bylaws of Northwest Natural Gas Company (incorporated by reference to Exhibit 3.2 to Form 10-Q for the quarter ended June 30, 2025, File No. 1-15973) |
| *10.1 | Deferred Compensation Plan for Directors and Executives, effective January 1, 2005, restated as of August 1, 2025 (incorporated by reference to Exhibit 3.2 to Form 10-Q for the quarter ended June 30, 2025, File No. 1-15973) |
| 10.2 | Second Amended and Restated Credit Agreement, dated as of November 3, 2025, among Northwest Natural Holding Company and the lenders party thereto, with JPMorgan Chase Bank, N.A. as administrative agent and Bank of America, N.A., U.S. Bank National Association, and Wells Fargo Bank, National Association, as co-syndication agents |
| 10.3 | Second Amended and Restated Credit Agreement, dated as of November 3, 2025, among Northwest Natural Gas Company and the lenders party thereto, with JPMorgan Chase Bank, N.A. as administrative agent and Bank of America, N.A., U.S. Bank National Association, and Wells Fargo Bank, National Association, as co-syndication agents |
| 10.4 | Credit Agreement, dated as of November 3, 2025, among SiEnergy Holding, LLC and the lenders party thereto, with JPMorgan Chase Bank, N.A. as administrative agent and Bank of America, N.A., U.S. Bank National Association, and Wells Fargo Bank, National Association, as co-syndication agents |
| 10.5 | Amendment No. 1 to Term Loan Agreement, dated as of November 3, 2025, among Northwest Natural Holding Company, the lenders party thereto, with U.S. Bank National Association, as administrative agent and sole bookrunner and lead arranger. |
| 31.1 | Certification of Principal Executive Officer of Northwest Natural Gas Company Pursuant to Rule 13a-14(a)/15-d-14(a), Section 302 of the Sarbanes-Oxley Act of 2002. |
| 31.2 | Certification of Principal Financial Officer of Northwest Natural Gas Company Pursuant to Rule 13a-14(a)/15-d-14(a), Section 302 of the Sarbanes-Oxley Act of 2002. |
| 31.3 | Certification of Principal Executive Officer of Northwest Natural Holding Company Pursuant to Rule 13a-14(a)/15-d-14(a), Section 302 of the Sarbanes-Oxley Act of 2002. |
| 31.4 | Certification of Principal Financial Officer of Northwest Natural Holding Company Pursuant to Rule 13a-14(a)/15-d-14(a), Section 302 of the Sarbanes-Oxley Act of 2002. |
| **32.1 | Certification of Principal Executive Officer and Principal Financial Officer of Northwest Natural Gas Company Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002. |
| **32.2 | Certification of Principal Executive Officer and Principal Financial Officer of Northwest Natural Holding Company Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002. |
| 101 | The following materials formatted in Inline Extensible Business Reporting Language (Inline XBRL):(i) Consolidated Statements of Income;(ii) Consolidated Balance Sheets;(iii) Consolidated Statements of Cash Flows; and(iv) Related notes.The instance document does not appear in the interactive data file because XBRL tags are embedded within the Inline XBRL document. |
| 104 | The cover page from the Company's Quarterly Report on Form 10-Q for the quarter ended September 30, 2025, formatted in Inline XBRL. |
- Incorporated by reference as indicated.
** Pursuant to Item 601(b)(32)(ii) of Regulation S-K, this certification is furnished and not filed for purposes of Section 18 of the Securities Exchange Act of 1934, as amended.
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