INVESTMENT CALCULATOR

I invested   on

Calculate Current Value and Shares Since: November 23, 1993

Investment Date: Original Shares: Original Value: Current Shares: Current Value: Percent Return:
Nov 23, 1993 148 $ 999.00 148 $ 2,899.26 190.22%

Investment of $ 999.00 on Nov 23, 1993 would yield $ 2,899.26 today

Adjustments

Date Reason Factor Shares Price Value %
Nov 23, 1993 Initial Investment 148 6.75 $999.00 0.00%
May 16, 2012 Current Investment 148 19.57 $2,899.26 190.22%

The Investment Calculator page and related information is provided by Mergent, a third party service. ATMI, Inc. does not maintain this page and is not responsible for the accuracy, completeness or timeliness of the information. The results are for illustrative purposes only and should not be relied on for investment purposes. The timing and price of dividend reinvestments, taxes, commissions and other factors may affect the values shown. Please note that historical investment performance is not intended to indicate future performance.

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NASDAQ:ATMI
$19.53   - 0.04 		May 17, 2012
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