Exhibit 11

DUCOMMUN INCORPORATED AND SUBSIDIARIES

RECONCILIATION OF THE NUMERATORS AND DENOMINATORS OF

THE BASIC AND DILUTED EARNINGS PER SHARE COMPUTATIONS

	Quarter Ended October 3, 2009
	Income (Numerator)		Shares (Denominator)	Per-Share Amount
Basic EPS
Income Available to Common Stockholders	$	6,190,000	10,449,000	$	0.59
Effect of Dilutive Securities
Stock Options		—	42,000
Diluted EPS
Income Available to Common Stockholders + Assumed Conversions	$	6,190,000	10,491,000	$	0.59
	Quarter Ended September 27, 2008
	Income (Numerator)		Shares (Denominator)	Per-Share Amount
Basic EPS
Income Available to Common Stockholders	$	6,264,000	10,578,000	$	0.59
Effect of Dilutive Securities
Stock Options		—	115,000
Diluted EPS
Income Available to Common Stockholders + Assumed Conversions	$	6,264,000	10,693,000	$	0.59

DUCOMMUN INCORPORATED AND SUBSIDIARIES

RECONCILIATION OF THE NUMERATORS AND DENOMINATORS OF

THE BASIC AND DILUTED EARNINGS PER SHARE COMPUTATIONS

	Nine Months Ended October 3, 2009
	Income (Numerator)		Shares (Denominator)	Per-Share Amount
Basic EPS
Income Available to Common Stockholders	$	13,384,000	10,465,000	$	1.28
Effect of Dilutive Securities
Stock Options		—	37,000
Diluted EPS
Income Available to Common Stockholders + Assumed Conversions	$	13,384,000	10,502,000	$	1.27
	Nine Months Ended September 27, 2008
	Income (Numerator)		Shares (Denominator)	Per-Share Amount
Basic EPS
Income Available to Common Stockholders	$	17,347,000	10,567,000	$	1.64
Effect of Dilutive Securities
Stock Options		—	104,000
Diluted EPS
Income Available to Common Stockholders + Assumed Conversions	$	17,347,000	10,671,000	$	1.63