secwatch.observer — SEC 8-K summary
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Issuer:     ONE Gas, Inc. (OGS)
CIK:        0001587732
Form:       8-K
Filed at:   2025-11-18T23:59:59+00:00
Accession:  0001193125-25-286182
Event type: leadership
Sentiment:  neutral
Materiality: 0.60
Item codes: 5.02, 7.01, 9.01
LLM model:  deepseek-v4-flash:cloud@v2

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

Source:
  EDGAR index:    https://www.sec.gov/Archives/edgar/data/1587732/000119312525286182/0001193125-25-286182-index.htm
  Primary doc:    https://www.sec.gov/Archives/edgar/data/1587732/000119312525286182/d886620d8k.htm
  HTML page:      https://secwatch.observer/filing/0001193125-25-286182

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