| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Dunn Catherine E | VP, Chief Accounting Officer | 5875 N. SAM HOUSTON PARKWAY, W., SUITE 400, HOUSTON | /s/ Jennifer F. Simons, Attorney-in-Fact for Catherine E. Dunn | 26 Feb 2026 | 0002001487 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | OII | Common Stock | Tax liability | $21,402 | -575 | -4.1% | $37.22 | 13,604 | 24 Feb 2026 | Direct | |
| transaction | OII | Common Stock | Sale | $108,808 | -2,866 | -21% | $37.96 | 10,738 | 25 Feb 2026 | Direct | |
| transaction | OII | Common Stock | Sale | $232,774 | -6,204 | -100% | $37.52 | 0 | 25 Feb 2026 | By 401(k) Plan |