| 2026-08-13 | 8-K | 8-K filed 2026-08-13 by ONE Gas, Inc. |
| 2026-08-05 | 10-Q | 10-Q filed 2026-08-05 by ONE Gas, Inc. |
| 2026-08-04 | 8-K | 8-K filed 2026-08-04 by ONE Gas, Inc. |
| 2026-08-04 | 8-K | 8-K filed 2026-08-04 by ONE Gas, Inc. |
| 2026-07-13 | 8-K | 8-K filed 2026-07-13 by ONE Gas, Inc. |
| 2026-07-08 | 8-K | 8-K filed 2026-07-08 by ONE Gas, Inc. |
| 2026-05-27 | 8-K | 8-K filed 2026-05-27 by ONE Gas, Inc. |
| 2026-05-26 | 8-K | 8-K filed 2026-05-26 by ONE Gas, Inc. |
| 2026-05-12 | 8-K | 8-K filed 2026-05-12 by ONE Gas, Inc. |
| 2026-05-05 | 10-Q | 10-Q filed 2026-05-05 by ONE Gas, Inc. |
| 2026-05-04 | 8-K | 8-K filed 2026-05-04 by ONE Gas, Inc. |
| 2026-04-07 | 8-K | 8-K filed 2026-04-07 by ONE Gas, Inc. |
| 2026-04-01 | DEF 14A | DEF 14A filed 2026-04-01 by ONE Gas, Inc. |
| 2026-02-24 | 8-K | 8-K filed 2026-02-24 by ONE Gas, Inc. |
| 2026-02-24 | 8-K | 8-K filed 2026-02-24 by ONE Gas, Inc. |
| 2026-02-20 | 8-K | 8-K filed 2026-02-20 by ONE Gas, Inc. |
| 2026-02-19 | 10-K | 10-K filed 2026-02-19 by ONE Gas, Inc. |
| 2026-02-18 | 8-K | 8-K filed 2026-02-18 by ONE Gas, Inc. |
| 2026-02-18 | 8-K | 8-K filed 2026-02-18 by ONE Gas, Inc. |
| 2026-01-22 | 8-K | 8-K filed 2026-01-22 by ONE Gas, Inc. |
| 2026-01-20 | 8-K | 8-K filed 2026-01-20 by ONE Gas, Inc. |
| 2025-12-29 | 8-K | 8-K filed 2025-12-29 by ONE Gas, Inc. |
| 2025-12-19 | 8-K | 8-K filed 2025-12-19 by ONE Gas, Inc. |
| 2025-12-18 | 8-K | 8-K filed 2025-12-18 by ONE Gas, Inc. |
| 2025-12-02 | 8-K | 8-K filed 2025-12-02 by ONE Gas, Inc. |
| 2025-12-01 | 8-K | 8-K filed 2025-12-01 by ONE Gas, Inc. |
| 2025-11-20 | 8-K | 8-K filed 2025-11-20 by ONE Gas, Inc. |
| 2025-11-18 | 8-K | 8-K filed 2025-11-18 by ONE Gas, Inc. |
| 2025-11-04 | 10-Q | 10-Q filed 2025-11-04 by ONE Gas, Inc. |
| 2025-11-03 | 8-K | 8-K filed 2025-11-03 by ONE Gas, Inc. |