| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Williams Patrick | PRESIDENT & CEO | 8310 SOUTH VALLEY HIGHWAY, SUITE 350, ENGLEWOOD | Patrick Williams | 03 Mar 2026 | 0001338883 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | IOSP | Common Stock | Tax liability | $624,056 | -7,966 | -3.3% | $78.34 | 231,535 | 27 Feb 2026 | Direct | F1 |
| Id | Content |
|---|---|
| F1 | Shares withheld to settle income tax liability incurred upon vesting of restricted stock unit award on February 27, 2026. |