ONE Gas Announces Participation in Wolfe Research Utilities Conference

What Happened
ONE Gas, Inc. (OGS) announced on September 25, 2026 (filed via Form 8-K) that it will participate virtually in the Wolfe Research Utilities, Midstream & Clean Energy Conference on September 29, 2026. CEO Sid McAnnally, President & COO Curtis Dinan, and SVP & CFO Christopher Sighinolfi will conduct meetings with members of the investment community. A news release announcing the participation was furnished as Exhibit 99.1 and the presentation materials are posted on ONE Gas’s investor website.

Key Details

• Filing date: September 25, 2026 (Form 8-K, Item 7.01 Regulation FD disclosure).
• Conference date: September 29, 2026; participation will be virtual.
• Management attending: Sid McAnnally (CEO), Curtis Dinan (President & COO), Christopher Sighinolfi (SVP & CFO).
• Presentation materials and news release are available at www.onegas.com/investors/events-and-presentations; news release furnished as Exhibit 99.1.

Why It Matters
This is a scheduled investor outreach event where ONE Gas management will meet with analysts and investors and make presentation materials publicly available, providing direct access to leadership (CEO and CFO) and ensuring equal disclosure under Regulation FD. For retail investors, the presentation is an opportunity to hear management’s messaging, review any operational or strategic updates they choose to present, and access the company’s official materials on the investor website. The filing was signed by CFO Christopher P. Sighinolfi on behalf of the company.