| 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 | 2025-09-11 | 0001716751 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | NEXT | Common Stock | Award | $0 | +354K | +8.04% | $0.00 | 4.75M | Sep 9, 2025 | Direct | F1 |
| transaction | NEXT | Common Stock | Tax liability | -$1.38M | -139K | -2.93% | $9.94 | 4.61M | Sep 9, 2025 | Direct | F2 |
| transaction | NEXT | Common Stock | Award | $0 | +354K | +7.67% | $0.00 | 4.96M | Sep 9, 2025 | Direct | F3 |
| Id | Content |
|---|---|
| F1 | Represents restricted stock units that vested upon Issuer's achievement of a milestone-based performance criteria on September 9, 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 September 9, 2025. |
| F3 | Represents restricted stock units that became earned to the Reporting Person upon Issuer's achievement of a milestone-based performance criteria on September 9, 2025. Such restricted stock units vest in two near-equal annual installments beginning on September 9, 2026. |