| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Redondo Jerry L | S.V.P., Elec. & Struc. Systems | 600 ANTON BLVD., SUITE 1100, COSTA MESA | Jerry L. Redondo | 2025-11-12 | 0001655127 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | DCO | Common Stock | Sale | -$150K | -1.59K | -2.31% | $93.83 | 67.3K | Nov 10, 2025 | Direct | F1, F2 |
| Id | Content |
|---|---|
| F1 | All shares were sold at the exact price indicated. The average sales price calculation is not applicable. |
| F2 | The total number of securities listed includes 86 shares of common stock acquired on July 31, 2025 through Ducommun Incorporated's Employee Stock Purchase Plan. |