As of November 6, 2026, ONE Gas, Inc. is a publicly traded company (NYSE: OGS); its largest reported holder is BlackRock, with 13.8% on Schedule 13G/A of October 27, 2026, then Vanguard (5.76%). The largest insider holding is Gibson John William, a director, with 292,670 shares (0.47% of shares outstanding), per Form 4 of June 4, 2026 (Schedule 13G/A, October 27, 2026).
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Is ONE Gas, Inc. a real, registered company?
- ONE Gas, Inc. files with the SEC under CIK 1587732 (its SEC filings).
- Its shares are listed under the ticker OGS on NYSE (SEC company record).
- Incorporated in Oklahoma; business address in Tulsa, Oklahoma, as its SEC filings state.
- Court and bankruptcy records: see Before you sign or pay below.
Before you sign or pay
- Court and bankruptcy: No federal court case or bankruptcy filing found under ONE Gas, Inc. in our court records and SEC 8-K records (as of 2026-11-06).
- Leadership changes: the latest reported is Nickolas Stavropoulos (Form 8-K filed 2026-07-13). Check you are dealing with the people now in charge.
- Ownership: 5%+ holders are reported on Schedule 13D or 13G; the latest names BlackRock (filed 2026-10-27).
Who are ONE Gas, Inc.'s owners and officers?
ONE Gas, Inc.: incorporated in Oklahoma; business address in Tulsa, Oklahoma; industry Natural Gas Distribution (Schedule 13G/A, 2026-10-27).
| Report | Holder | Share |
|---|---|---|
| Schedule 13G/A, 2026-10-27 | Blackrock, Inc. | 13.8% |
| Schedule 13G, 2026-08-07 | State Street Corporation | 5.2% |
| Schedule 13G/A, 2026-05-15 | Wellington Management Group LLP | 4.2% |
| Schedule 13G/A, 2026-05-01 | American Century Investment Management, Inc. | 5.4% |
| Schedule 13G, 2026-04-30 | Vanguard Capital Management | 5.19% |
| Schedule 13G, 2026-04-29 | Vanguard Portfolio Management | 5.76% |
| Schedule 13G/A, 2026-03-27 | The Vanguard Group | 0% |
| Schedule 13G, 2026-02-09 | State Street Corporation | 5% |
| Schedule 13G, 2025-11-10 | State Street Corporation | 5.1% |
| Schedule 13G, 2025-08-11 | State Street Corporation | 4.8% |
| Schedule 13G/A, 2025-07-29 | The Vanguard Group | 10.52% |
Questions about who owns ONE Gas, Inc.
Who owns ONE Gas, Inc.?
On this page, 5 holders' latest ownership filings report 5% or more of ONE Gas, Inc.: Blackrock, Inc. (13.8%, Schedule 13G/A, filed 2026-10-27), Vanguard Portfolio Management (5.76%, Schedule 13G, filed 2026-04-29), American Century Investment Management, Inc. (5.4%, Schedule 13G/A, filed 2026-05-01), State Street Corporation (5.2%, Schedule 13G, filed 2026-08-07) and Vanguard Capital Management (5.19%, Schedule 13G, filed 2026-04-30).
Who are the largest shareholders of ONE Gas, Inc.?
By the share each holder's latest filing reports, the largest holders of ONE Gas, Inc. on this page are Blackrock, Inc. (13.8%), Vanguard Portfolio Management (5.76%) and American Century Investment Management, Inc. (5.4%).
When did Blackrock, Inc. buy into ONE Gas, Inc.?
The filings give report dates, not purchase dates. The earliest filing from Blackrock, Inc. on this page is the Schedule 13G/A, filed 2026-10-27, reporting 13.8%. That earliest filing is itself an amendment, which updates an earlier report.
Is this an audit or a full list?
Neither. The ownership list on this page covers only Schedule 13D and 13G filings, which holders make once they own 5% or more of a class of shares (an amendment can report a stake that has since fallen below 5%); 11 such filings are shown here. It is not an audit and not a full cap table: holders who never reached 5% are not listed, and a stake can change after its latest filing.
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What the Full Report on ONE Gas, Inc. covers
The Short Answer
Which Company This Is
What They Do, And How The Money Works
Who Runs It, And How To Reach Them
The Money: Funding, Valuation, Runway
Who Pays Them, And Who They Are Up Against
Warning Bells
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| Filed | Person | Role | Change | Effective |
|---|---|---|---|---|
| Form 8-K, 2026-07-13 | Nickolas Stavropoulos | appointed |
Which insiders own ONE Gas, Inc. shares?
Directors, officers and holders of 10% or more report their shares on Forms 3, 4 and 5. Each line is the latest such report, largest holding first.
- , a director: 292,670 shares (0.47% of shares outstanding) (Form 4, 2026-06-04).
- Curtis Dinan: 147,172.33 shares (0.23% of shares outstanding), 141,263.33 held directly and 5,909 indirectly (Form 4, 2026-02-19).
- Joseph L. McCormick: 76,775.42 shares (0.12% of shares outstanding) (Form 4, 2026-06-10).
- , a director: 56,004.62 shares (0.09% of shares outstanding) (Form 4, 2026-02-19).
- Mark A. Bender: 28,582.4 shares (0.05% of shares outstanding) (Form 4, 2026-02-19).
Shares outstanding: 62,857,151 as of 2026-10-23, from the company's latest SEC cover page.
How much has ONE Gas, Inc. raised?
No fundraising or offering filing from ONE Gas, Inc. is on file with us.
Keep reading
More on ONE Gas, Inc. and the records around it.
ONE Gas, Inc. elsewhere on the record
- 5%+ stake filings Oct 2026
- Leadership changes Jul 2026
Companies that share a holder
- American Century Investment Management, Inc. also filed stake reports on 83 other companies: Visteon Corporation (Oct 2026), MarineMax, Inc. (Sep 2026), AdvanSix Inc. (Aug 2026)
- Wellington Management Group LLP also filed stake reports on 240 other companies: Hub Group, Inc. (Oct 2026), Latham Group, Inc. (Oct 2026), Redwood Trust, Inc. (Oct 2026)
- STATE STREET CORPORATION also filed stake reports on 343 other companies: TRADE DESK INC/THE (Oct 2026), CENTRUS ENERGY CORP (Sep 2026), ACADIA PHARMACEUTICALS INC (Aug 2026)
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