Exhibit 11

DUCOMMUN INCORPORATED AND SUBSIDIARIES

RECONCILIATION OF THE NUMERATORS AND DENOMINATORS OF

THE BASIC AND DILUTED EARNINGS PER SHARE COMPUTATIONS



|                                                              |  |                                     |           |                     |            |                 |   |     
|------------------------------------------------------------- |  | ----------------------------------- | --------- | ------------------- | ---------- | --------------- | - | ----
|                                                              |  | For the Quarter Ended April 3, 2010
|                                                              |  | Income(Numerator)                   |           | Shares(Denominator) |            | Per-ShareAmount
|Basic EPS                                                     |  |                                     |           |                     |            |                 |   |     
|Income Available to Common Stockholders                       |  | $                                   | 4,223,000 |                     | 10,465,000 |                 | $ | 0.40
|                                                              |  |                                     |           |                     |            |                 |   |     
|Effect of Dilutive Securities                                 |  |                                     |           |                     |            |                 |   |     
|Stock Options                                                 |  |                                     |          |                     | 37,000     |                 |   |     
|                                                              |  |                                     |           |                     |            |                 |   |     
|Diluted EPS                                                   |  |                                     |           |                     |            |                 |   |     
|Income Available to Common Stockholders + Assumed Conversions |  | $                                   | 4,223,000 |                     | 10,502,000 |                 | $ | 0.40
|                                                              |  |                                     |           |                     |            |                 |   |     
|                                                              | 
|                                                              |  | For the Quarter Ended April 4, 2009
|                                                              |  | Income(Numerator)                   |           | Shares(Denominator) |            | Per-ShareAmount
|Basic EPS                                                     |  |                                     |           |                     |            |                 |   |     
|Income Available to Common Stockholders                       |  | $                                   | 2,585,000 |                     | 10,495,000 |                 | $ | 0.25
|                                                              |  |                                     |           |                     |            |                 |   |     
|Effect of Dilutive Securities                                 |  |                                     |           |                     |            |                 |   |     
|Stock Options                                                 |  |                                     |          |                     | 7,000      |                 |   |     
|                                                              |  |                                     |           |                     |            |                 |   |     
|Diluted EPS                                                   |  |                                     |           |                     |            |                 |   |     
|Income Available to Common Stockholders + Assumed Conversions |  | $                                   | 2,585,000 |                     | 10,502,000 |                 | $ | 0.25
|                                                              |  |                                     |           |                     |            |                 |   |