| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Brock Amanda M | Co-Chief Executive Officer, Director | 9651 KATY FREEWAY, SUITE 300, HOUSTON | /s/ Christopher M. Powell, Attorney-in-Fact | 18 Dec 2025 | 0001714868 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | SEI | Class A Common Stock | Purchase | $150,025 | +3,669 | +2.7% | $40.89 | 141,080 | 17 Dec 2025 | Direct | F1 |
| Id | Content |
|---|---|
| F1 | Includes 125,000 shares of Class A common stock subject to previously granted Restricted Stock Awards that remain subject to vesting. |