| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| MASTERSON ELLEN H | Director | 19001 CRESCENT SPRINGS DRIVE, KINGWOOD | /s/ Christian P. Callens, by Power of Attorney | 11 Mar 2026 | 0001045311 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | NSP | Common Stock | Purchase | $23,880 | +1,200 | +6.1% | $19.90 | 20,980 | 11 Mar 2026 | Direct |