| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| King Scott A | President and CEO, Director | 600 SOUTH AIRPORT ROAD, MANSFIELD | Scott A. King BY:/s/Brigette A. Burnell Attorney-in-Fact | 11 Feb 2026 | 0001703109 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| holding | GRC | Common Stock | 73,462 | 31 Dec 2025 | Direct | F1, F2, F3 | |||||
| holding | GRC | Common Stock (401-K Plan) | 2,135 | 31 Dec 2025 | By 401-K Trust | F4 |
| Id | Content |
|---|---|
| F1 | Includes 30,388 unvested stock units granted under the Company's equity incentive plans. |
| F2 | Balance reflects 151 shares of common stock acquired under the Company's Employee Stock Purchase Plan between March 6, 2025 and December 31, 2025. |
| F3 | Balance reflects 50 shares of common stock acquired through dividend reinvestment between March 6, 2025 and December 31, 2025. |
| F4 | Balance reflects 33 shares of common stock acquired under the Company's 401-K Plan during 2025. |