NATGAS PIPELINE CRITICAL NOTICE: Columbia Gas LIFTED: OFO — Receipt Points in Market Areas 26, 30, 35, 41, 42, Eff. ID1 Tuesday, October 13, 2026

( This is the verbatim text of a critical notification provided by the pipeline operator to its shippers. The information has not been independently verified. This item may be followed by a news story depending on the severity of the incident's impact, if any, on operations. ) Company Name: Columbia Gas Notice Type Description: Operational Flow Order Posted Date: 10/13/26 7:08:52 AM Effective Date: 10/13/26 4:00:00 AM End Date: 11/13/26 5:00:00 AM Subject: LIFTED: OFO — Receipt Points in Market Areas 26, 30, 35, 41, 42, Eff.

TCO reserves the right to reinstate the OFO as operationally necessary. Please contact your Customer Services Representative with any questions***Previous Posting***Pursuant to the provisions of Section 17 of the General Terms and Conditions of its FERC Gas Tariff, Columbia Gas Transmission, LLC (TCO) is issuing an Operational Flow Order ("OFO") to Shippers under all transportation rate schedules with receipts in Market Areas 26, 30, 35, 41, and 42 to protect the operational integrity of TCO’s system and its ability to meet its firm service obligations.

As explained in Pre OFO (Notice ID 26306016), due to mild weather forecasts, anticipated lower market demand, higher storage and line pack levels, and the level of production received in Market Areas 26, 30, 35, 41, and 42, physical receipts must be equal to or less than scheduled receipts in order to maintain system integrity and provide reliable firm service. Therefore, TCO is issuing the following Operational Flow Order (OFO): 1. The Time and Date of Issuance of this OFO is Friday, October 9, 2026, at 8:10 AM ET. 2.

The OFO will become effective for the Timely Cycle for Gas Day Saturday, October 10, 2026. 3. This OFO will continue in duration until TCO issues further notice of termination of this OFO. 4.

The Shippers impacted by this OFO are those scheduling receipts of gas in Market Areas 26, 30, 35, 41, and 42 whose physical receipts are not less than or equal to their scheduled receipts during a Gas Day. 5. Pursuant to the OFO, the following actions must be taken: During the period this OFO is in effect, impacted shippers must align scheduled quantities with physical quantities in Market Areas 26, 30, 35, 41, and 42, which may require communication with upstream operators. Shippers must remain in balance at the start of, and throughout, each Gas Day, beginning Saturday, October 10, 2026, and continuing until further notice.

Receipt points must be balanced such that actual receipts into Market Areas 26, 30, 35, 41, and 42 must be less than or equal to the scheduled receipt quantities into these areas unless otherwise mutually agreed on a nondiscriminatory basis. 6. The justification for issuing the OFO is as set forth above. 7.

3 of TCO’s FERC Gas Tariff. Shippers are encouraged to stay coordinated with upstream suppliers regarding changes in physical flow for the duration of the OFO. If a penalty is assessed, the penalty will be based on all quantities in aggregate in violation of the OFO in excess of a tolerance of 5% of scheduled receipt quantities or 5,000 Dth whichever is higher. This tolerance will be in effect during the OFO unless revised through an update to this notice.

, or Texas Eastern, M-2 Receipts as published in Platts Gas Daily price survey for the days on which the OFO is issued. " Please contact your Customer Services Representative with any questions. More information is available at