TSP Name: Northern Natural Gas Company TSP: 784158214 Notice ID: 096528 Notice Type: TSP Capacity Offering Subject: RESULTS: OPEN SEASON FOR DEMARC AND VENTURA INCLUDING EAST LEG CAPACITY FOR NOVEMBER 2025 Critical: N Post Date/Time: 10/03/2025 01:40 PM Notice Status: Initiate For Gas Day(s): 10/03/2025 - 10/10/2025 Notice Effective Date/Time: 10/03/2025 01:40 PM Notice End Date/Time: 10/10/2025 05:00 PM Required Response Indicator Description: 5-No response required Notice Text: Northern held an open season for firm throughput service from NBPL/NNG Ventura (POI 192) and NNG Field/MKT Demarcation -16B (POI 37654) for delivery to points between Demarc and Ventura including east of Ogden on the East Leg. The open season began September 17, 2025, and concluded at 5 p.m. CCT on Thursday October 2, 2025. Northern received binding bids that were evaluated pursuant to the terms of the open season. The net present value analysis of the customers' bids is shown below: Bid Number 1 2 3 4 Start Date 11/1/2025 11/1/2025 11/1/2025 11/1/2025 End Date 10/31/2031 10/31/2027 10/31/2027 10/31/2027 Season Annual Annual Annual Annual Total Volume Bid 108 150 50 1,002 Bid Rate Max Max Max Max Rate Schedule TFX TFX TFX TFX Primary Receipt Location(s) 37654,192 37654,192 37654,192 37654,192 Primary Delivery Location(s) 53782 4152 55309 3353, 1636, 3133 Aggregate Bid NPV Per Unit* $368.65 $368.65 $368.65 $368.65 *FERC Interest Rate 7.50% No realignment requests were received. If you have any questions, please contact your marketing representative.