MICROSEMI CORPORATION

Selected GAAP and Non-GAAP Financial Measures

(Unaudited, in millions, except for percentages and per share amounts)

Quarter Ended

Nine Months

Jun 30,

2013

Mar 31,

2013

Jul 1,

2012

Jun 30,

2013

Jul 1,

2012

Net sales

$

242.6

$

235.3

$

259.2

$

725.6

$

749.4

Selected GAAP Financial Measures

Gross profit

$

138.3

$

133.5

$

144.6

$

414.4

$

402.2

Gross margin

57.0

%

56.7

%

55.8

%

57.1

%

53.7

%

Operating income

$

25.2

$

11.8

$

21.3

$

62.6

$

31.8

Operating margin

10.4

%

5.0

%

8.2

%

8.6

%

4.2

%

Net income (loss)

$

18.3

$

(2.9)

$

8.1

$

29.6

$

(41.3)

Diluted earnings (loss) per share

$

0.20

$

(0.03)

$

0.09

$

0.33

$

(0.48)

Selected Non-GAAP Financial Measures

Gross profit

$

138.3

$

133.5

$

145.6

$

414.4

$

414.5

Gross margin

57.0

%

56.7

%

56.2

%

57.1

%

55.3

%

Operating income

$

54.8

$

50.0

$

60.7

$

161.4

$

167.4

Operating margin

22.6

%

21.2

%

23.4

%

22.2

%

22.3

%

Net income

$

44.8

$

38.9

$

48.3

$

128.6

$

122.2

Diluted earnings per share

$

0.49

$

0.43

$

0.55

$

1.42

$

1.40