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 2, 2011 |          
|                                                              |  | Income(Numerator)                   |           |  | Shares(Denominator) |  |            | Per-ShareAmount | 
|Basic EPS                                                     |  |                                     |           |  |                     |  |            |                 |  |   |      | 
|Income Available to Common Stockholders                       |  | $                                   | 2,923,000 |  |                     |  | 10,526,000 |                 |  | $ | 0.28 | 
|                                                              |  |                                     |           |  |                     |  |            |                 |  |   |      | 
|Effect of Dilutive Securities                                 |  |                                     |           |  |                     |  |            |                 |  |   |      | 
|Stock Options                                                 |  |                                     |          |  |                     |  | 108,000    |                 |  |   |      | 
|                                                              |  |                                     |           |  |                     |  |            |                 |  |   |      | 
|Diluted EPS                                                   |  |                                     |           |  |                     |  |            |                 |  |   |      | 
|Income Available to Common Stockholders + Assumed Conversions |  | $                                   | 2,923,000 |  |                     |  | 10,634,000 |                 |  | $ | 0.27 | 
|                                                              |  |                                     |           |  |                     |  |            |                 |  |   |      | 
|                                                              | 
|                                                              |  | 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 | 
|                                                              |  |                                     |           |  |                     |  |            |                 |  |   |      |