OGS · ONE Gas, Inc.

Summary

ONE Gas, Inc. announced on February 20, 2026, that its 2026 Annual Meeting of Shareholders will be held as a virtual meeting only on May 21, 2026, at 10:00 a.m. This filing discloses the event under Item 8.01 and includes Exhibit 99.1, a news release dated February 20, 2026.

Key takeaways

• 2026 Annual Meeting announced as virtual only
• Meeting date: Thursday, May 21, 2026
• Meeting time: 10:00 a.m.
• Exhibit 99.1: News release dated February 20, 2026
• Filed under Form 8-K on February 20, 2026