| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Taylor Stephen Charles | Director | 404 VETERANS AIRPARK LANE, SUITE 300, MIDLAND | Stephen C. Taylor | 2025-05-16 | 0001316004 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | NGS | Common Stock | Sale | -$623K | -25K | -5.45% | $24.90 | 433K | May 15, 2025 | Direct | F1 |
| holding | NGS | Common Stock | 114K | May 15, 2025 | Rabbi Trust |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Underlying Class | Amount | Exercise Price | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| holding | NGS | Restricted Stock Units | 4.2K | May 15, 2025 | Common Stock | 4.2K | Direct | F2 |
| Id | Content |
|---|---|
| F1 | These shares were sold in multiple transactions at prices ranging from $24.75 to $25.21 inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote. |
| F2 | Not Applicable. Each RSU represents the right to receive one share of the Issuer's common stock upon vesting. |