Effective Timely Cycle for gas day Thursday, December 25, 2025, and continuing until further notice, SNG restricted the following:

OPERATIONAL FLOW ORDERS (OFO)

Type 6 OFO Warning

Based on current milder temperatures resulting in lower demand on Southern's system, SNG encourages all shippers to manage their system requirements to maintain balance between actual receipts and deliveries.  An Operational Flow Order for long imbalances could be required to help ensure system integrity as Southern's Tariff provides that a Type 6 OFO can be implemented on four hours' notice or less prior to the start of the gas day.  - See Notice #711510

RESTRICTIONS (SEGMENT)

·         380 (SNG - SESH) - Exceeds Operating Capacity - Reductions into OP Services

RESTRICTIONS (LINEPACK)

Payback Due Pipe – None

Payback Due Shipper – None

RESTRICTIONS (STORAGE)

Incremental Interruptible Storage (ISS) Injections not allowed - See Notice # 710565

Type 3 / 4 OFO Probability (Unlikely (UL); Likely (L); Too Close to Call (TC); Highly Likely (HL)

December 25, 2025 – UL

December 26, 2025 – UL

December 27, 2025 – UL

December 28, 2025 – UL

Type 6 OFO Probability (Unlikely (UL); Too Close to Call (TC); Highly Likely (HL)

December 25, 2025 – UL for Short and TC for Long Imbalances

December 26, 2025 – UL for Short and TC for Long Imbalances

December 27, 2025 – UL for Short and TC for Long Imbalances

December 28, 2025 – UL for Short and TC for Long Imbalances