| | | | | | | | |
| Exhibit 21 | | |
| | |
| Subsidiaries of National Fuel Gas Company |
| As of September 30, 2023 |
| | |
| | State or Other |
| | Jurisdiction of Incorporation |
| Legal Name | | or Organization |
| | |
| National Fuel Gas Distribution Corporation | | New York |
| National Fuel Gas Supply Corporation | | Pennsylvania |
| Seneca Resources Company, LLC | | Pennsylvania |
| Empire Pipeline, Inc. | | New York |
| National Fuel Gas Midstream Company, LLC | | Pennsylvania |
| NFG Midstream Covington, LLC | | Pennsylvania |
| NFG Midstream Trout Run, LLC | | Pennsylvania |
| NFG Midstream Processing, LLC | | Pennsylvania |
| NFG Midstream Tionesta, LLC | | Pennsylvania |
| NFG Midstream Clermont, LLC | | Pennsylvania |
| Highland Field Services, LLC | | Pennsylvania |
| Pennsylvania Gas Holdings Corporation | | Pennsylvania |