<SEC-DOCUMENT>0001140361-19-014678-index.html : 20190809
<SEC-HEADER>0001140361-19-014678.hdr.sgml : 20190809
<ACCEPTANCE-DATETIME>20190809091712
ACCESSION NUMBER:		0001140361-19-014678
CONFORMED SUBMISSION TYPE:	DEFA14A
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20190809
DATE AS OF CHANGE:		20190809
EFFECTIVENESS DATE:		20190809

FILER:

	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

	FILING VALUES:
		FORM TYPE:		DEFA14A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-34387
		FILM NUMBER:		191011504

	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
</SEC-HEADER>
<DOCUMENT>
<TYPE>DEFA14A
<SEQUENCE>1
<FILENAME>formdefa14a.htm
<DESCRIPTION>DEFA14A
<TEXT>
Document 1 - file: formdefa14a.htm

</DOCUMENT>
</SEC-DOCUMENT>