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   &lt;div align="left" style="font-size: 10pt; margin-top: 12pt"&gt;&lt;b&gt;(4)&amp;#160;Disclosures About Segments of an Enterprise&lt;/b&gt;
   &lt;/div&gt;
   &lt;div align="left" style="font-size: 10pt; margin-top: 6pt"&gt;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;Operating segments are components of an enterprise for which separate discrete financial
   information is available for evaluation by the chief operating decision-maker in making decisions
   on how to allocate resources and assess performance. The Company&amp;#8217;s chief operating decision-maker
   is its Chief Executive Officer. ATG views its operations and manages its business as one segment
   with three product offerings: software licenses, recurring
   services, and professional and education
   services. ATG evaluates these product offerings based on their respective
   revenues and gross margins. As a result, the financial information disclosed in the
   consolidated financial statements represents the material financial information related to our
   principal operating segment.
   &lt;/div&gt;
   &lt;div align="left" style="font-size: 10pt; margin-top: 6pt"&gt;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;Revenues from foreign sources were approximately $16.2&amp;#160;million and $12.7&amp;#160;million for the three
   months ended September&amp;#160;30, 2010 and 2009, respectively, and $41.3&amp;#160;million and $39.0&amp;#160;million for the
   nine months ended September&amp;#160;30, 2010 and 2009, respectively. Revenues from foreign sources were
   primarily generated from customers located in Europe. All of the Company&amp;#8217;s product sales for the
   three and nine months ended September&amp;#160;30, 2010 and 2009 were delivered from ATG&amp;#8217;s headquarters
   located in the United States.
   &lt;/div&gt;
   &lt;div align="left" style="font-size: 10pt; margin-top: 6pt"&gt;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;The following table represents the percentage of total revenue by geographic region for the
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   &lt;div style="margin-left:15px; text-indent:-15px"&gt;Other
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 -Publisher FASB
 -Name Statement of Financial Accounting Standard (FAS)
 -Number 131

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