TSP Name: Northern Natural Gas Company TSP: 784158214 Notice ID: 099773 Notice Type: TSP Capacity Offering Subject: RESULTS: OPEN SEASON FOR VIKING PIERZ INSIDE BRAINERD LAKE/CROSBY BRANCH LINE Critical: N Post Date/Time: 12/12/2025 11:03 AM Notice Status: Initiate For Gas Day(s): 12/12/2025 - 12/19/2025 Notice Effective Date/Time: 12/12/2025 11:03 AM Notice End Date/Time: 12/19/2025 05:00 PM Required Response Indicator Description: 5-No response required Notice Text: Northern held an open season for firm throughput service from Viking/NNG Pierz Inter (POI 61667) for delivery to points on the Brainerd Lake/Crosby Branch Line in Northern's Market Area. The open season began December 5, 2025, and concluded at 5 p.m. CCT on Thursday December 11, 2025. Northern received one binding bid that was evaluated pursuant to the terms of the open season. The net present value analysis of the customer bid is shown below: Bid Number 1 Start Date 10/1/2026 End Date 10/31/2031 Season Annual Total Volume Bid 500 Bid Rate Max Rate Type TFX Primary Receipt Location(s) 61667 Primary Delivery Location(s) 79719 Aggregate Bid NPV Per Unit* $376.97 *FERC Interest Rate 7.20% No realignment requests were received. If you have any questions, please contact your marketing representative.