<SEC-DOCUMENT>0001181431-14-024531-index.html : 20140626
<SEC-HEADER>0001181431-14-024531.hdr.sgml : 20140626
<ACCEPTANCE-DATETIME>20140619171920
ACCESSION NUMBER:		0001181431-14-024531
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20140617
FILED AS OF DATE:		20140619
DATE AS OF CHANGE:		20140619

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:			Sherif Tarek
		CENTRAL INDEX KEY:			0001466275

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-34387
		FILM NUMBER:		14931036

	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>rrd412046.xml
<DESCRIPTION>FORM 4 - TAREK SHERIF - 10B5-1 - SALE OF EXISTING SHARES
<TEXT>
Document 1 - file: rrd412046.html

Document 1 - RAW XML: rrd412046.xml

</DOCUMENT>
</SEC-DOCUMENT>