| Type | Value |
|---|---|
| cik | 0000042682 |
| ticker | GRC |
| Date | Type | Insider | Qty | Price | Signals |
|---|---|---|---|---|---|
| 07 May 2026 | GIFT | GORMAN JEFFREY S | 1,880 | 0.00 USD | indirect |
| 07 May 2026 | GIFT | GORMAN JEFFREY S | 1,680 | 0.00 USD | indirect |
| 07 May 2026 | GIFT | GORMAN JEFFREY S | 3,360 | 0.00 USD | indirect |
| 03 Mar 2026 | TAX_WITHHOLDING | Stoops Ronald F | 912 | 0.00 USD | |
| 03 Mar 2026 | TAX_WITHHOLDING | Wischmeier D Patrick | 1,062 | 0.00 USD | |
| 03 Mar 2026 | TAX_WITHHOLDING | Burnell Brigette A | 3,566 | 0.00 USD | |
| 03 Mar 2026 | TAX_WITHHOLDING | King Scott A | 9,211 | 0.00 USD | |
| 03 Mar 2026 | TAX_WITHHOLDING | Woodman Barbara A | 1,033 | 0.00 USD | |
| 03 Mar 2026 | TAX_WITHHOLDING | Morehead Angela M | 924 | 0.00 USD | |
| 03 Mar 2026 | TAX_WITHHOLDING | Kerr James | 4,275 | 0.00 USD | |
| 25 Feb 2026 | GRANT_AWARD | Burnell Brigette A | 1,715 | 0.00 USD | |
| 25 Feb 2026 | GRANT_AWARD | Burnell Brigette A | 2,852 | 0.00 USD | |
| 25 Feb 2026 | GRANT_AWARD | Stoops Ronald F | 862 | 0.00 USD | |
| 25 Feb 2026 | GRANT_AWARD | Stoops Ronald F | 504 | 0.00 USD | |
| 25 Feb 2026 | GRANT_AWARD | Kerr James | 3,160 | 0.00 USD | |
| 25 Feb 2026 | GRANT_AWARD | Kerr James | 3,881 | 0.00 USD | |
| 25 Feb 2026 | GRANT_AWARD | King Scott A | 6,167 | 0.00 USD | |
| 25 Feb 2026 | GRANT_AWARD | King Scott A | 6,210 | 0.00 USD | |
| 25 Feb 2026 | GRANT_AWARD | Woodman Barbara A | 924 | 0.00 USD | |
| 25 Feb 2026 | GRANT_AWARD | Woodman Barbara A | 504 | 0.00 USD | |
| 25 Feb 2026 | GRANT_AWARD | Wischmeier D Patrick | 504 | 0.00 USD | |
| 25 Feb 2026 | GRANT_AWARD | Wischmeier D Patrick | 924 | 0.00 USD | |
| 25 Feb 2026 | GRANT_AWARD | Morehead Angela M | 924 | 0.00 USD | |
| 25 Feb 2026 | GRANT_AWARD | Morehead Angela M | 504 | 0.00 USD | |
| 25 Apr 2025 | GRANT_AWARD | Heminger Pamela A | 2,553 | 0.00 USD |