ONE Gas, Inc.
OGS- Exchange
- NYSE
- Industry
- Natural Gas Distribution
- SEC CIK
- 0001587732
No open-market purchases or sales by ONE Gas, Inc. insiders were filed in the last 90 days; 431 institutions reported holding it in 13F filings for Q2 2026, worth $4.51B in total; no superinvestor holds it.
Holders of 5% or more of OGS
Holders whose latest Schedule 13D or 13G filing reports 5% or more of ONE Gas, Inc., largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| BlackRock, Inc. | 13G/A | 12.80%7.66M shares | – | Apr 23, 20251 filing | Apr 23, 2025 | SEC |
| Vanguard Portfolio Management LLC | 13G | 5.76%3.61M shares | New | Apr 29, 20261 filing | Apr 29, 2026 | SEC |
| American Century Investment Management Inc | 13G/A | 5.40%3.38M shares | −1.20 ppfrom 6.60% | Feb 11, 20216 filings | May 1, 2026 | SEC |
| State Street Corp | 13G | 5.20%3.27M shares | +0.20 ppfrom 5.00% | Feb 10, 20237 filings | Aug 7, 2026 | SEC |
| Vanguard Capital Management LLC | 13G | 5.19%3.26M shares | New | Apr 30, 20261 filing | Apr 30, 2026 | SEC |
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
31 Schedule 13D and 13G filings on ONE Gas, Inc., newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Aug 7, 202610:31 AM ET | State Street Corp | 13G | 5.20%3.27M shares | +0.20 ppfrom 5.00% | Jun 30, 2026 | SEC |
| May 15, 20267:24 AM ET | Wellington Management Group LLPand 2 others | 13G/A | 4.20%2.61M shares | –Below 5% | Mar 31, 2026 | SEC |
| May 1, 202610:12 AM ET | American Century Investment Management Incand 2 others | 13G/A | 5.40%3.38M shares | −1.20 ppfrom 6.60% | Mar 31, 2026 | SEC |
| Apr 30, 202612:09 PM ET | Vanguard Capital Management LLC | 13G | 5.19%3.26M shares | New | Mar 31, 2026 | SEC |
| Apr 29, 20262:37 PM ET | Vanguard Portfolio Management LLC | 13G | 5.76%3.61M shares | New | Mar 31, 2026 | SEC |
| Mar 27, 202611:05 AM ET | Vanguard Group Inc | 13G/A | 0.00%0 shares | −10.52 ppfrom 10.52%Below 5% | Mar 13, 2026 | SEC |
| Feb 9, 20267:57 AM ET | State Street Corp | 13G | 5.00%2.98M shares | −0.10 ppfrom 5.10% | Dec 31, 2025 | SEC |
| Nov 10, 20258:49 AM ET | State Street Corp | 13G | 5.10%3.04M shares | +0.30 ppfrom 4.80% | Sep 30, 2025 | SEC |
| Aug 11, 20257:53 AM ET | State Street Corp | 13G | 4.80%3.00M shares | –Below 5% | Jun 30, 2025 | SEC |
| Jul 29, 20252:13 PM ET | Vanguard Group Inc | 13G/A | 10.52%6.57M shares | – | Jun 30, 2025 | SEC |
| May 15, 202510:53 AM ET | American Century Investment Management Incand 3 others | 13G/A | 6.60%3.97M shares | – | Mar 31, 2025 | SEC |
| Apr 23, 20258:57 PM ET | BlackRock, Inc. | 13G/A | 12.80%7.66M shares | – | Mar 31, 2025 | SEC |
| Nov 8, 2024 | Wellington Management Group LLP | 13GOld format | – | New | – | SEC |
| Nov 8, 2024 | American Century Investment Management Inc | 13G/AOld format | – | – | – | SEC |
| Feb 13, 2024 | Vanguard Group Inc | 13G/AOld format | – | – | – | SEC |
| Feb 12, 2024 | American Century Investment Management Inc | 13G/AOld format | – | – | – | SEC |
| Jan 25, 2024 | State Street Corp | 13G/AOld format | – | – | – | SEC |
| Jan 23, 202411:52 AM ET | BlackRock Inc. | 13G/AOld format | – | – | – | SEC |
| Aug 9, 2023 | State Street Corp | 13G/AOld format | – | – | – | SEC |
| Feb 14, 2023 | Price T Rowe Associates Inc | 13G/AOld format | – | – | – | SEC |
| Feb 10, 2023 | State Street Corp | 13GOld format | – | New | – | SEC |
| Feb 9, 2023 | Vanguard Group Inc | 13G/AOld format | – | – | – | SEC |
| Feb 8, 2023 | American Century Investment Management Inc | 13G/AOld format | – | – | – | SEC |
| Jan 23, 20233:52 PM ET | BlackRock Inc. | 13G/AOld format | – | – | – | SEC |
| Feb 14, 2022 | Price T Rowe Associates Inc | 13G/AOld format | – | – | – | SEC |
| Feb 10, 2022 | Vanguard Group Inc | 13G/AOld format | – | – | – | SEC |
| Feb 4, 2022 | American Century Investment Management Inc | 13G/AOld format | – | – | – | SEC |
| Jan 27, 20225:13 PM ET | BlackRock Inc. | 13G/AOld format | – | – | – | SEC |
| Jan 26, 20229:16 AM ET | BlackRock Inc. | 13G/AOld format | – | – | – | SEC |
| Jun 10, 2021 | Vanguard Group Inc | 13G/AOld format | – | – | – | SEC |
| Feb 16, 2021 | Price T Rowe Associates Inc | 13G/AOld format | – | – | – | SEC |
| Feb 11, 2021 | American Century Investment Management Inc | 13G/AOld format | – | – | – | SEC |
| Feb 10, 2021 | Vanguard Group Inc | 13G/AOld format | – | – | – | SEC |
| Jan 26, 20216:52 PM ET | BlackRock Inc. | 13G/AOld format | – | – | – | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell ONE Gas, Inc. shares.
No Form 144 notices for ONE Gas, Inc. are on file.