Medidata Solutions, Inc. (MDSO) to Ring the NASDAQ Stock Market Opening Bell

Company to Celebrate Initial Public Offering On NASDAQ


ADVISORY, June 25, 2009 (GLOBE NEWSWIRE) --



 What:
 Medidata Solutions, Inc. (MDSO) Chief Executive Officer Tarek Sherif
 and President Glen de Vries will preside over the opening bell to
 celebrate the company's initial public offering on NASDAQ.

 Where:
 NASDAQ MarketSite - 4 Times Square - 43rd & Broadway - Broadcast Studio

 When:
 Thursday, June 25, 2009 - 9:15 a.m. to 9:30 a.m. ET

 Contacts:
 Susan McCarron
 Lois Paul & Partners
 781.782.5767
 susan_mccarron@lpp.com

 NASDAQ MarketSite:
 Jolene Libretto; 646.441.5220; mobile - 347.219.9539
 Jolene.Libretto@Nasdaqomx.com

Feed Information:

The Opening Bell is available from 9:20 a.m. to 9:35 a.m. on Galaxy 19 C/15, downlink frequency 4000 vertical. The feed can also be found on Ascent fiber 1623. If you have any questions, please contact Jolene Libretto at (646) 441-5220.

Radio Feed:

An audio transmission of the Opening Bell is also available from 9:20 a.m. to 9:35 a.m. on uplink IA6 C band / transponder 24, downlink frequency 4180 horizontal. The feed can be found on Ascent fiber 1623 as well.

Webcast:

A live webcast of the NASDAQ Opening Bell will be available at: http://www.nasdaq.com/reference/marketsite_about.stm.

Photos:

To obtain a hi-resolution photograph of the Market Open, please go to http://www.nasdaq.com/reference/marketsite_events.stm and click on the market open of your choice.

About Medidata Solutions, Inc.:

Medidata Solutions, Inc. (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(tm)), investigator benchmarking and budgeting (Medidata Grants Manager), contract research organization (CRO) benchmarking and budgeting (Medidata CRO Contractor(tm)), and the capture, management, analysis and reporting of clinical trial data (Medidata Rave(r)). 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.

About NASDAQ OMX:

The NASDAQ OMX Group, Inc. is the world's largest exchange company. It delivers trading, exchange technology and public company services across six continents, with over 3,800 listed companies. NASDAQ OMX Group offers multiple capital raising solutions to companies around the globe, including its U.S. listings market; NASDAQ OMX Nordic, NASDAQ OMX Baltic, NASDAQ OMX First North; and the U.S. 144A sector. The company offers trading across multiple asset classes including equities, derivatives, debt, commodities, structured products and ETFs. NASDAQ OMX Group technology supports the operations of over 70 exchanges, clearing organizations and central securities depositories in more than 50 countries. NASDAQ OMX Nordic and NASDAQ OMX Baltic are not legal entities but describe the common offering from NASDAQ OMX Group exchanges in Helsinki, Copenhagen, Stockholm, Iceland, Tallinn, Riga, and Vilnius. For more information about NASDAQ OMX, visit http://www.nasdaqomx.com.

NDAQA