NEW YORK--(BUSINESS WIRE)--Medidata Solutions (NASDAQ: MDSO), a leading global provider of SaaS-based clinical development solutions, today announced that it will release its first quarter 2011 financial results following the close of the market on Tuesday, May 10, 2011. Tarek Sherif, chief executive officer, and Bruce Dalziel, chief financial officer and executive vice president, compliance, 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 second quarter and full year 2011.