| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Schatzman Matthew K | Chief Executive Officer, Director | 1000 LOUISIANA STREET, SUITE 3300, HOUSTON | /s/ Vera de Gyarfas, Attorney-in-fact | 2025-10-20 | 0001716751 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | NEXT | Common Stock | Award | $0 | +224K | +4.26% | $0.00 | 5.47M | Oct 16, 2025 | Direct | F1 |
| transaction | NEXT | Common Stock | Tax liability | -$537K | -88K | -1.61% | $6.11 | 5.38M | Oct 16, 2025 | Direct | F2 |
| transaction | NEXT | Common Stock | Award | $0 | +224K | +4.15% | $0.00 | 5.61M | Oct 16, 2025 | Direct | F3 |
| Id | Content |
|---|---|
| F1 | Represents restricted stock units that vested upon Issuer's achievement of a milestone-based performance criteria on October 16, 2025. |
| F2 | Represents shares of common stock withheld by the Issuer to satisfy tax withholding obligations in connection with the vesting of restricted stock units on October 16, 2025. |
| F3 | Represents restricted stock units that became earned to the Reporting Person upon Issuer's achievement of a milestone-based performance criteria on October 16, 2025. Such restricted stock units vest in two equal annual installments beginning on October 16, 2026. |