Docket No:  UG 531 Docket Name:  NW NATURAL 2026 PURCHASE GAS ADJUSTMENTS AND OTHER SCHEDULES Submit Public Comment Subject Company:  NORTHWEST NATURAL     In the Matter of NORTHWEST NATURAL GAS COMPANY, dba NW NATURAL, Request for 2026-2027 Purchase Gas Adjustments and Coincident Rate Adjustments. Filed by Kyle Walker. Copies served to Gas List. HC and Confidential saved to Agency Folder. Filing Date:  7/23/2026 Advice No: 26-05C       Effective:  1/1/1900 Expiration:   Status:  PENDING Case Manager:  ANNA KIM Phone:  971-239-2887 Email:   anna.kim@puc.oregon.gov Staff Contact:  ZHUOYI ZHAO Phone:   Email:   zhuoyi.zhao@puc.oregon.gov Email Service List (semi-colon delimited)      Email Service List (comma delimited)   If you experience problems with the above 'Email Service List' links, please try one of these: Service List Popup (semi-colon delimited)     Service List Popup (comma delimited)

ACTIONS SERVICE LIST SCHEDULE Public Comments Sort By Date        Sort By Type Date: 10/23/2026 Action:  STAFF REPORT      Description Staff Report for the October 27, 2026 Special Public Meeting (Item No. RA2), by Zhuoyi Zhao.   Date: 10/23/2026 Action:  STAFF REPORT      Description UG 531, UM 2372(1), UM 2324(2), UM 2311(2), UM 2323(2), UM 2252(4), UM 2233(3)) - Staff Report for the October 27, 2026 Special Public Meeting (Item No. CA3), by Julie Dyck.   Date: 10/23/2026 Action:  REPLACEMENT SHEETS, ADDITIONAL MATERIAL      Description NW Natural's Supplemental Advice No. 26-05C. The company files herewith three new, fully executed renewable natural gas (RNG) offtake agreements as a supplement to its September 14, 2026, Exhibit D filing. At the time of the September 14, 2026 filing, the new RNG offtake agreements reflected in the Company's RNG Portfolio had not yet been fully executed. Accordingly, placeholders were included for the highly confidential attachments, noting the executed agreements would be provided to the Public Utility Commission of Oregon (Commission) upon execution and prior to the proposed rate effective date. Highly Confidential saved to Agency Folder.   Date: 9/23/2026 Action:  REPLACEMENT SHEETS, ADDITIONAL MATERIAL      Description NW Natural's Supplemental Advice No. 26-05B. This filing corrects Sheet 122-1 changing the year from 2025 to 2026.   Date: 9/15/2026 Action:  PETITION TO INTERVENE      Description AWEC's Petition to Intervene, with contacts of Chad Stokes and Elise Koepke. Filed by Chad Stokes.   Date: 9/14/2026 Action:  REPLACEMENT SHEETS, ADDITIONAL MATERIAL      Description NW Naturals Replacement of Advice No. This filing replaces, in their entirety, the tariff sheets as indicated above and Exhibits A-D, J, K, M and T originally filed under NWN OPUC Advice No. 26-05 (UG 531), dated August 3, 2026. The purpose of this replacement filing is to revise the forecasted gas costs with updated inputs as well as include the related updates to Schedule 100 tariff sheets. This filing also includes revisions to Schedule 169 reflecting a refund applicable only to customers served during 2024, in addition to the current deferral applicable to all customers; Schedule 171 reflecting revised RNG offtake costs resulting from contract updates; Schedule 177 reflecting updated Corporate Activity Tax amounts based on the proposed revenue changes; and Schedule 195 correcting amounts related to interest recorded. Confidential and Highly Confidential saved to Agency Folder.   Date: 8/26/2026 Action:  OTHER FILING/PLEADING      Description NW Natural's Notice of Publication and corresponding tear sheets, together with Declaration of Erica Lee-Pella; filed by Natasha Siores.  Date: 8/18/2026 Action:  HUDDLE REQUEST      Description CUB's Request for Huddle Access, filed by Lizzie Lesch-Abhaya.   Date: 8/18/2026 Action:  CUB NOTICE OF INTERVENTION      Description CUB's Notice of Intervention, with contacts of Claire Valentine-Fossum, Bob Jenks, and Emily Dougan. Filed by Claire Valentine-Fossum  Date: 8/5/2026 Action:  SERVICE LIST CHANGE      Description CUB's Request to update Service List to add Bob Jenks, Emily Dougan, Lizzie Lesch-Abhaya as Interested Parties; filed by Lizzie Lesch-Abhaya.   Date: 8/3/2026 Action:  INITIAL UTILITY FILING      Description In the Matter of NORTHWEST NATURAL GAS COMPANY, dba NW NATURAL, Request for 2026-2027 Purchase Gas Adjustments and Coincident Rate Adjustments. Filed by Kyle Walker. Copies served to Gas List. HC and Confidential saved to Agency Folder.