ONE Gas board chair John Gibson to retire May 2026; Deborah Hersman elected successor

ONE Gas, Inc.

John W. Gibson (73) retiring as Board chair after 11 years, effective May 21, 2026.
Deborah A.P. Hersman (55) elected to succeed as chair, effective same date.
Hersman joined board in 2023; former NTSB chair, National Safety Council CEO, Waymo CSO.
Retirement not due to disagreement; board size to reduce to eight after departure.
Gibson led ONE Gas separation from ONEOK in 2014; succession was comprehensive planning process.

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