NATGAS PIPELINE CRITICAL NOTICE: Southern Natural Gas Unsched Sched Unit Outage — Seg 400

( This is the verbatim text of a critical notification provided by the pipeline operator to its shippers. The information has not been independently verified by Reuters. This item may be followed by a news story depending on the severity of the incident's impact, if any, on operations. )) Company Name: Southern Natural Gas Notice Type Description: MAINTENANCE Posted Date: 10/15/2026 Effective Date: 10/15/2026 End Date: 10/16/2026 Posting Text: Unscheduled Unit Outage — Gwinville Compressor Station (Segment 400 — Gwinville) Southern has experienced an unscheduled unit outage at the Gwinville compressor station (Segment 400 — Gwinville) located in Jefferson Davis County, MS. Return to service of the unit is unknown currently. As a result, Segment 400 (Gwinville) capacity of 234 Mdth/d will be reduced by 31 Mdth/d to 203,000 Mdth/d effective Intraday 1 cycle, gas day, Thursday, October 15, 2026. Based on current system demand, Interruptible and Out of Path nominations may be restricted. Please continue to reference our weekly EBB postings for current maintenance information. If you have any questions, please contact your Scheduling Representative or Account Manager. SNG Gas Control Mo