Date

Call Type

Apr 3, 2007

2006 Year End Earnings Conference Call

Nov 11, 2006

3rd Quarter Earnings Conference Call

Aug 3, 2006

2nd Quarter Earnings Conference Call

May 4, 2006

1st Quarter Earnings Conference Call

Mar 9, 2006

2005 Year End Earnings Conference Call

Nov 10, 2005

3rd Quarter Earnings Conference Call

Aug 18, 2005

2nd Quarter Earnings Conference Call

Apr 29, 2005

1st Quarter Earnings Conference Call

Mar 10, 2005

2004 Year End Earnings Conference Call

Nov 4, 2004

3rd Quarter Earnings Conference Call

July 29, 2004

2nd Quarter Earnings Conference Call

April 29, 2004

1st Quarter Earnings Conference Call

Mar 4, 2004

2003 Year End Earnings Conference Call

Oct 30, 2003

3rd Quarter Earnings Conference Call

Sep 3, 2003

Update Call for Thomson Acquisition

Aug 12, 2003

2nd Quarter Earnings Conference Call

May 8, 2003

1st Quarter Earnings Conference Call

Feb 12, 2003

2002 Year End Earnings Conference Call

Contact Advanstar Investor Relations: ir@advanstar.com

Published/Updated Augustl 2006: We have provided this document for reference to our investors. It contains information that we believed to be accurate at the time of original publication, but may become outdated over time. We assume no responsibility for updating, supplementing, correcting or deleting this information.

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