The IPO lockup period is a legally binding contract between the underwriters and the company undergoing the initial public offering that probits company insiders from selling their shares.  The expiration of the lockup period can be very important because it can result in a declining share price as insiders cash out a portion of or all of their position.

The following is a list of companies with expiring IPO lockup periods for the coming week:

5/6/2007: Catalyst Pharmaceutical Partners (CPRX)

5/7/2007: Canadian Solar (CSIQ), KBW (KBW), OneBeacon Insurance (OB), Physicians Formula (FACE)

5/8/2007: ACA Capital (ACA), Capella Education Company (CPLA), Metabolix (MBLX), Thermage (THRM)