| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Hutchinson Michael G | Director | 15 E. 5TH STREET, TULSA | /s/ Brian K. Shore, Attorney-in-Fact for Michael G. Hutchinson | 05 Dec 2025 | 0001555428 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | OGS | Common stock, par value $0.01 | Sale | $236,574 | -3,000 | -17% | $78.86 | 14,631 | 04 Dec 2025 | Direct |