EXHIBIT 11
Tetra Tech, Inc.
Computation of Net Income Per Common Share
(Unaudited)
$ in thousands, except share data Three Months Ended Six Months Ended
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March 30, March 31, March 30, March 31,
1997 1996 1997 1996
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Primary:
Common stock outstanding, beginning of
period ................................ 14,244,210 13,976,066 14,127,002 13,235,309
Stock options exercised ................... 45,256 20,887 60,137 55,527
Issuance of common stock .................. 147,492 84,119 249,819 790,236
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Common stock outstanding, end of period ... 14,436,958 14,081,072 14,436,958 14,081,072
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Weighted average common shares
outstanding during the period ......... 14,276,025 14,060,760 14,213,168 13,864,081
Common Stock equivalents under the
treasury stock method assuming the
exercise of options and warrants ...... 357,293 443,316 447,934 463,796
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Total ............................. 14,633,318 14,504,076 14,661,102 14,327,877
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Net Income as reported in consolidated
financial statements .................. 2,872,000 2,297,000 5,468,000 4,326,000
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Primary net income per common share ....... $ 0.20 $ 0.16 $ 0.37 $ 0.30
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Fully Diluted:
Weighted average common shares
outstanding during the period ......... 14,276,025 14,060,760 14,213,168 13,864,081
Common Stock equivalents under the
treasury stock method assuming the
exercise of options and warrants ...... 357,293 460,240 447,934 470,170
Other potentially dilutive securities:
Convertible Preferred Stock ............ -- -- -- --
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Total ............................. 14,633,318 14,521,000 14,661,102 14,334,251
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Net Income as reported in consolidated
financial statements .................. 2,872,000 2,297,000 5,468,000 4,326,000
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Fully diluted net income per common share.. $ 0.20 $ 0.16 $ 0.37 $ 0.30
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