EXHIBIT 99.3
ADTRAN, INC.
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(In thousands)
Three Months Ended Nine Months Ended
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September 30, September 30,
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2007 2006 2007 2006
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Stock-based compensation expense included in
cost of sales $ 96 $ 90 $ 283 $ 260
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Selling, general and administrative expense 1,023 992 3,222 2,952
Research and development expense 1,086 983 3,235 2,882
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Stock-based compensation expense included in 2,109 1,975 6,457 5,834
operating expenses
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Total stock-based compensation expense 2,205 2,065 6,740 6,094
Tax benefit for expense associated with
non-qualified options (263) (261) (679) (774)
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Total stock-based compensation expense, net of tax $ 1,942 $ 1,804 $ 6,061 $ 5,320
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