Medidata Solutions Schedules Second Quarter Earnings Conference Call for August 13, 2009

FOR IMMEDIATE RELEASE
 

NEW YORK – July 30, 2009 – Medidata Solutions (Nasdaq: MDSO), a leading global provider of hosted clinical development solutions, today announced that it will release its second quarter 2009 financial results following the close of the market on Thursday, August 13, 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 third quarter and full year 2009.

To participate by telephone, domestic participants may dial 877-874-1570 and international participants may dial 719-325-4933. Those interested in participating in the conference call should dial in at least 10 minutes prior to the call to register.

Participants can also join the call via a simultaneous live audio webcast, which will be made available on the “Investor” section of Medidata’s Web site, http://investor.mdsol.com.

A replay of the conference call can be accessed until Thursday, August 27, 2009 by dialing 888-203-1112 domestically or 719-457-0820 internationally, with the passcode 6046830. An archive of the call will also be hosted on the “Investor” section of Medidata’s Web site, http://investor.mdsol.com, for a limited period of time.

About Medidata Solutions Worldwide
Medidata Solutions (www.mdsol.com) is a leading global provider of hosted clinical development solutions that enhance the efficiency of customers’ clinical development processes and optimize their research and development investments. Medidata products and services allow customers to achieve clinical results more efficiently and effectively by streamlining the design, planning and management of key aspects of the clinical development process, including protocol development (Medidata Designer™), investigator benchmarking and budgeting (Medidata Grants Manager™), contract research organization (CRO) benchmarking and budgeting (Medidata CRO Contractor™), and the capture, management, analysis and reporting of clinical trial data (Medidata Rave®). Medidata’s diverse customer base spans pharmaceutical, biotechnology and medical device companies, academic institutions, CROs and other research organizations, and includes more than 20 of the top 25 global pharmaceutical companies.

Investor Contact:
Hulus Alpay
Medidata Solutions
212.419.1025
halpay@mdsol.com

Media Contact:
Susan McCarron
Lois Paul & Partners
781.782.5767
Susan_McCarron@lpp.com