TSP Name: Northern Natural Gas Company TSP: 784158214 Notice ID: 101460 Notice Type: Customer Service Update Subject: UPDATE 1: CONFIRMATION ERROR - GAS DAY JANUARY 24, 2026 - ID3 NOMINATION CYCLE Critical: N Post Date/Time: 01/25/2026 07:21 AM Notice Status: Supersede Prior Notice: 101459 For Gas Day(s): 01/24/2026 - 01/27/2026 Notice Effective Date/Time: 01/25/2026 06:55 AM Notice End Date/Time: 01/28/2026 08:59 AM Required Response Indicator Description: 5-No response required Notice Text: Update 1: Northern has corrected the scheduling error at the three Great Lakes receipt points during the ID3 nomination cycle for Gas Day Saturday, January 24, 2026. Customers can now view the revised scheduled quantities. · GRLKS/NNG Carlton (POI 388) · GRLKS/NNG Wakefield (POI 21972) · GRLKS/NNG Grand Rapids (POI 78994) Original Notice: Northern experienced a confirmation error at the three Great Lakes receipt points during the ID3 nomination cycle for Gas Day Saturday, January 24, 2026, which caused scheduled quantities to default to EPSQ. The issue is being corrected, and revised scheduled quantities will be posted as soon as possible. Northern regrets any inconvenience this may have caused. If you have any questions, please contact your customer service representative.