NEW YORK--(BUSINESS WIRE)--Medidata Solutions (Nasdaq: MDSO), a leading global provider of hosted clinical development solutions, today announced that it will release its third quarter 2009 financial results following the close of the market on Thursday, November 12, 2009. Tarek Sherif, chief executive officer, and Bruce Dalziel, chief financial officer, will also hold a conference call at 5:00 p.m. ET for investors and analysts to review these results and discuss the outlook for the fourth quarter and full year 2009.