TSP Name: Northern Natural Gas Company TSP: 784158214 Notice ID: 109223 Notice Type: Other Subject: SHORT-TERM AND MULTI-YEAR SYSTEM MANAGEMENT SERVICE (SMS) AVAILABILITY Critical: N Post Date/Time: 07/08/2026 09:00 AM Notice Status: Initiate For Gas Day(s): 07/08/2026 - 07/31/2026 Notice Effective Date/Time: 07/08/2026 09:00 AM Notice End Date/Time: 07/31/2026 05:00 PM Required Response Indicator Description: 5-No response required Notice Text: System Management Service (SMS) is a companion service to Firm Throughput Service. Shippers may contract SMS for an annual period up to the entitlement level of the corresponding Firm Throughput Agreement. The SMS Service Agreement term must match the companion Firm Throughput Service Agreement term unless such agreement exceeds five (5) years. Northern will sell SMS for terms up to 5 years, or for the remaining term of the underlying contract, if greater than 1 year. If you have any questions, please contact your marketing or customer service representative.