| Type | Filed | Filer | Subject | Shares Owned | Percent Owned | |
|---|---|---|---|---|---|---|
| SC 13G/A | 2024-02-13 | VANGUARD GROUP INC | OGE ENERGY CORP. | 21,173,212 | 10.6% | EDGAR |
| SC 13G/A | 2024-01-23 | BlackRock Inc. | OGE ENERGY CORP. | 24,893,403 | 12.4% | EDGAR |
| SC 13G/A | 2023-02-09 | VANGUARD GROUP INC | OGE ENERGY CORP. | 21,038,382 | 10.5% | EDGAR |
| SC 13G/A | 2023-01-23 | BlackRock Inc. | OGE ENERGY CORP. | 23,700,662 | 11.8% | EDGAR |
| SC 13G/A | 2022-02-10 | VANGUARD GROUP INC | OGE ENERGY CORP. | 20,046,232 | 10.0% | EDGAR |
| SC 13G/A | 2022-02-09 | VANGUARD GROUP INC | OGE ENERGY CORP. | 19,986,274 | 10.0% | EDGAR |
| SC 13G/A | 2022-01-27 | BlackRock Inc. | OGE ENERGY CORP. | 25,739,361 | 12.9% | EDGAR |
| SC 13G | 2022-01-26 | BlackRock Inc. | OGE ENERGY CORP. | 25,739,361 | 12.9% | EDGAR |
| SC 13G/A | 2021-12-03 | OGE ENERGY CORP. | Enable Midstream Partners, LP | 0 | 0.0% | EDGAR |
| SC 13G/A | 2021-04-12 | VANGUARD GROUP INC | OGE ENERGY CORP. | 20,221,623 | 10.1% | EDGAR |
| SC 13G/A | 2021-02-10 | VANGUARD GROUP INC | OGE ENERGY CORP. | 19,312,287 | 9.7% | EDGAR |
| SC 13G/A | 2021-01-26 | BlackRock Inc. | OGE ENERGY CORP. | 28,547,917 | 14.3% | EDGAR |
| SC 13G/A | 2020-02-12 | VANGUARD GROUP INC | OGE ENERGY CORP. | 20,901,257 | 10.4% | EDGAR |
| SC 13G/A | 2020-02-04 | BlackRock Inc. | OGE ENERGY CORP. | 28,818,040 | 14.4% | EDGAR |
| SC 13G/A | 2019-01-31 | BlackRock Inc. | OGE ENERGY CORP. | 28,041,935 | 14.0% | EDGAR |
| SC 13G/A | 2019-01-10 | VANGUARD GROUP INC | OGE ENERGY CORP. | 20,138,196 | 10.1% | EDGAR |
| SC 13G | 2018-02-13 | OGE ENERGY CORP. | Enable Midstream Partners, LP | 110,982,805 | 25.7% | EDGAR |
| SC 13G/A | 2018-02-09 | VANGUARD GROUP INC | OGE ENERGY CORP. | 18,194,711 | 9.1% | EDGAR |
| SC 13G/A | 2018-01-19 | BlackRock Inc. | OGE ENERGY CORP. | 21,820,957 | 10.9% | EDGAR |
| SC 13G/A | 2017-02-10 | VANGUARD GROUP INC | OGE ENERGY CORP. | 16,629,307 | 8.3% | EDGAR |