Three Months Ended March 31,

2013

2012

Numerator

Numerator for basic loss per common share - loss from continuing operations

$

(40,617

)

$

(23,692

)

Net income attributable to the noncontrolling interests

(984

)

(1,497

)

Loss attributable to MDC Partners Inc. common shareholders from continuing operations

(41,601

)

(25,189

)

Effect of dilutive securities

—

Numerator for diluted loss per common share – loss attributable to MDC Partners Inc. common shareholders from continuing operations

$

(41,601

)

$

(25,189

)

Denominator

Denominator for basic loss per common share – adjusted weighted shares

31,233,893

29,889,932

Effect of dilutive securities

—

Denominator for diluted loss per common share - adjusted weighted shares

31,233,893

29,889,932

Basic loss per common share from continuing operations attributable to MDC Partners Inc.

$

(1.33

)

$

(0.84

)

Diluted loss per common share from continuing operations attributable to MDC Partners Inc.

$

(1.33

)

$

(0.84

)