ONE Gas, Inc. (OGS) ownership: Top institutional holder: BlackRock, Inc. ($785.08M). Insider activity: Net Seller (3 buys, 17 sells). 2 recent congressional STOCK Act disclosures. SEC EDGAR first-party data.
| Holder | Shares | Market Value | Reported |
|---|---|---|---|
| BlackRock, Inc. | 9115076.00 | $785.08M | 2026-03-31 |
| VANGUARD GROUP INC | 6489014.00 | $501.28M | 2025-12-31 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 3589993.00 | $309.21M | 2026-03-31 |
| AMERICAN CENTURY COMPANIES INC | 3375393.00 | $290.72M | 2026-03-31 |
| STATE STREET CORP | 3036885.00 | $261.57M | 2026-03-31 |
| VANGUARD CAPITAL MANAGEMENT LLC | 2776005.00 | $239.10M | 2026-03-31 |
| WELLINGTON MANAGEMENT GROUP LLP | 2605303.00 | $224.39M | 2026-03-31 |
| BlackRock Fund Advisors | 3171982.00 | $202.88M | 2016-12-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Sell | null | 2026-05-21 | |
| Sell | null | 2026-05-21 | |
| Sell | null | 2026-05-21 | |
| Sell | null | 2026-05-21 | |
| Sell | null | 2026-05-21 | |
| Sell | null | 2026-05-21 | |
| Sell | null | 2026-05-21 | |
| Sell | null | 2026-05-21 |
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Institutional data from SEC Form 13F. Insider data from SEC Form 4. Congressional data from STOCK Act disclosures. Not personalized investment advice.