Medidata Solutions Schedules Third Quarter Earnings Conference Call for November 12, 2009

• Press Release
• Source: Medidata Solutions
• On 8:30 am EDT, Thursday October 29, 2009

NEW YORK--(BUSINESS WIRE)--Medidata Solutions (Nasdaq: MDSO - News), 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.

Related Quotes

Symbol	Price	Change
MDSO	17.24	-0.06

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To participate by telephone, domestic participants may dial 888-378-0337 and international participants may dial 719-325-2173. 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, November 26, 2009 by dialing 888-203-1112 domestically or 719-457-0820 internationally, with the passcode 6391430. 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:
Medidata Solutions
Hulus Alpay, 212-419-1025
halpay@mdsol.com
or
Media Contact:
Lois Paul & Partners
Susan McCarron, 781-782-5767
susan_mccarron@lpp.com