| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Stone Carolyn J | Director | C/O SUMMIT MIDSTREAM CORPORATION, 910 LOUISIANA STREET, SUITE 4200, HOUSTON | /s/ James D. Johnston, Attorney-in-Fact for Carolyn J. Stone | 18 Mar 2026 | 0001346748 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | SMC | Common Stock | Award | +3,733 | $0.000000* | 3,733 | 16 Mar 2026 | Direct |