NORTHWEST NATURAL GAS CO
For the period ended Mar 31, 2026. Filed May 6, 2026.
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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.
Mar 31, 2026 · Filed May 6, 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 March 31, 2026
| Exhibit Index | |
|---|---|
| Exhibit Number | Document |
| 10.1 | Reimbursement Agreement and Continuing Indemnity Related to Standby Letters of Credit/Letters of Guarantee, dated May 1, 2026, between NW Natural and the Toronto-Dominion Bank, New York Branch. |
| *10.2 | 2026 Executive Annual Incentive Plan, effective January 1, 2026 (incorporated by reference to Exhibit 10t to Form 10-K for the fiscal year ended December 31, 2025, File No. 1-15973). |
| *10.3 | Form of Performance Share Long Term Incentive Agreement Under Long Term Incentive Plan (2026-2028) (incorporated by reference to Exhibit 10ee to Form 10-K for the fiscal year ended December 31, 2025, File No. 1-38681). |
| *10.4 | Form of Restricted Stock Unit Agreement Under Long Term Incentive Plan (2026) (incorporated by reference to Exhibit 10hh to Form 10-K for the fiscal year ended December 31, 2025, File No. 1-38681). |
| 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 March 31, 2026, 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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