| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Chewning Eric D. | EVP, Maritime Sys & Corp STR | C/O HUNTINGTON INGALLS INDUSTRIES, INC., 4101 WASHINGTON AVE., NEWPORT NEWS | /s/ Tiffany M. King, Attorney-in-Fact | 05 Mar 2026 | 0001964855 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | HII | Common Stock | Sale | $736,848 | -1,700 | -47% | $433.44 | 1,949 | 04 Mar 2026 | Direct |