<SEC-DOCUMENT>0001181431-14-028189-index.html : 20140804
<SEC-HEADER>0001181431-14-028189.hdr.sgml : 20140804
<ACCEPTANCE-DATETIME>20140804193341
ACCESSION NUMBER:		0001181431-14-028189
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20140731
FILED AS OF DATE:		20140804
DATE AS OF CHANGE:		20140804

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Medidata Solutions, Inc.
		CENTRAL INDEX KEY:			0001453814
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-PREPACKAGED SOFTWARE [7372]
		IRS NUMBER:				522319066
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		350 HUDSON ST.,  9TH FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10014
		BUSINESS PHONE:		212.918.1800

	MAIL ADDRESS:	
		STREET 1:		350 HUDSON ST.,  9TH FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10014

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Schloss Eileen
		CENTRAL INDEX KEY:			0001560574

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-34387
		FILM NUMBER:		141014353

	MAIL ADDRESS:	
		STREET 1:		C/O MEDIDATA SOLUTIONS, INC.
		STREET 2:		79 FIFTH AVENUE, 8TH FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10003
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>rrd414054.xml
<DESCRIPTION>EILEEN SCHLOSS - EXERCISE AND SALE
<TEXT>
Document 1 - file: rrd414054.html

Document 1 - RAW XML: rrd414054.xml

</DOCUMENT>
</SEC-DOCUMENT>