Three Months Ended June 30,

Six Months Ended June 30,

2012

2011

2012

2011

Numerator

Numerator for basic income (loss) per common share - loss from continuing operations

$

(16,822

)

$

4,171

$

(41,120

)

$

(2,333

)

Net income attributable to the noncontrolling interests

(1,605

)

(2,527

)

(3,035

)

(4,132

)

Income (loss) attributable to MDC Partners Inc. common shareholders from continuing operations

(18,427

)

1,644

(44,155

)

(6,465

)

Effect of dilutive securities

—

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

$

(18,427

)

$

1,644

$

(44,155

)

$

(6,465

)

Denominator

Denominator for basic income (loss) per common share – adjusted weighted shares

30,872,050

29,016,384

30,380,991

28,952,182

Effect of dilutive securities

—

3,285,338

—

Denominator for diluted income (loss) per common share - adjusted weighted shares

30,872,050

32,301,722

30,380,991

28,952,182

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

$

(0.60

)

$

0.06

$

(1.45

)

$

(0.22

)

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

$

(0.60

)

$

0.05

$

(1.45

)

$

(0.22

)