| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Hart Tracy E | Director | 15 E. 5TH STREET, TULSA | /s/ Brian K. Shore, Attorney-in-Fact for Tracy E. Hart | 27 May 2025 | 0001747990 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | OGS | Common stock, par value $0.01 | Award | $139,998 | +1,905 | +25% | $73.49 | 9,602 | 22 May 2025 | Direct | F1 |
| Id | Content |
|---|---|
| F1 | Annual stock retainer shares are issued under the Issuer's Amended and Restated Equity Compensation Plan (2018). |