EXHIBIT 11

DUCOMMUN INCORPORATED AND SUBSIDIARIES

RECONCILIATION OF THE NUMERATORS AND
DENOMINATORS OF

THE BASIC AND DILUTED EARNINGS PER SHARE COMPUTATIONS



|                                                             |  |                                      |            |  |                     |  |            |                 |  |   |      | 
|------------------------------------------------------------ |  | ------------------------------------ | ---------- |  | ------------------- |  | ---------- | --------------- |  | - | ---- | 
|                                                             |  | For the Year Ended December 31, 2010 |           
|                                                             |  | Income(Numerator)                    |            |  | Shares(Denominator) |  |            | Per-ShareAmount | 
|Income Available to Common Stockholders                      |  | $                                    | 19,808,000 |  |                     |  | 10,488,000 |                 |  | $ | 1.89 | 
|                                                             |  |                                      |            |  |                     |  |            |                 |  |   |      | 
|Effect of Dilutive Securities                                |  |                                      |            |  |                     |  |            |                 |  |   |      | 
|Stock Options                                                |  |                                      |            |  |                     |  | 108,000    |                 |  |   |      | 
|                                                             |  |                                      |            |  |                     |  |            |                 |  |   |      | 
|Diluted EPS                                                  |  |                                      |            |  |                     |  |            |                 |  |   |      | 
|Income Available to Common Stockholders+ Assumed Conversions |  | $                                    | 19,808,000 |  |                     |  | 10,596,000 |                 |  | $ | 1.87 | 
|                                                             |  |                                      |            |  |                     |  |            |                 |  |   |      | 
|                                                             | 
|                                                             |  | For the Year Ended December 31, 2009 |           
|                                                             |  | Income(Numerator)                    |            |  | Shares(Denominator) |  |            | Per-ShareAmount | 
|Basic EPS                                                    |  |                                      |            |  |                     |  |            |                 |  |   |      | 
|Income Available to Common Stockholders                      |  | $                                    | 10,183,000 |  |                     |  | 10,461,000 |                 |  | $ | 0.97 | 
|                                                             |  |                                      |            |  |                     |  |            |                 |  |   |      | 
|Effect of Dilutive Securities                                |  |                                      |            |  |                     |  |            |                 |  |   |      | 
|Stock Options                                                |  |                                      |            |  |                     |  | 49,000     |                 |  |   |      | 
|                                                             |  |                                      |            |  |                     |  |            |                 |  |   |      | 
|Diluted EPS                                                  |  |                                      |            |  |                     |  |            |                 |  |   |      | 
|Income Available to Common Stockholders+ Assumed Conversions |  | $                                    | 10,183,000 |  |                     |  | 10,510,000 |                 |  | $ | 0.97 | 
|                                                             |  |                                      |            |  |                     |  |            |                 |  |   |      | 
|                                                             | 
|                                                             |  | For the Year Ended December 31, 2008 |           
|                                                             |  | Income(Numerator)                    |            |  | Shares(Denominator) |  |            | Per-ShareAmount | 
|Basic EPS                                                    |  |                                      |            |  |                     |  |            |                 |  |   |      | 
|Income Available to Common Stockholders                      |  | $                                    | 13,112,000 |  |                     |  | 10,563,000 |                 |  | $ | 1.24 | 
|                                                             |  |                                      |            |  |                     |  |            |                 |  |   |      | 
|Effect of Dilutive Securities                                |  |                                      |            |  |                     |  |            |                 |  |   |      | 
|Stock Options                                                |  |                                      |            |  |                     |  | 86,000     |                 |  |   |      | 
|                                                             |  |                                      |            |  |                     |  |            |                 |  |   |      | 
|Diluted EPS                                                  |  |                                      |            |  |                     |  |            |                 |  |   |      | 
|Income Available to Common Stockholders+ Assumed Conversions |  | $                                    | 13,112,000 |  |                     |  | 10,649,000 |                 |  | $ | 1.23 | 
|                                                             |  |                                      |            |  |                     |  |            |                 |  |   |      |