<SEC-DOCUMENT>0001193125-15-144401-index.html : 20150423
<SEC-HEADER>0001193125-15-144401.hdr.sgml : 20150423
<ACCEPTANCE-DATETIME>20150423170105
ACCESSION NUMBER:		0001193125-15-144401
CONFORMED SUBMISSION TYPE:	DEFA14A
PUBLIC DOCUMENT COUNT:		5
FILED AS OF DATE:		20150423
DATE AS OF CHANGE:		20150423
EFFECTIVENESS DATE:		20150423

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			VASCO DATA SECURITY INTERNATIONAL INC
		CENTRAL INDEX KEY:			0001044777
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-COMPUTER INTEGRATED SYSTEMS DESIGN [7373]
		IRS NUMBER:				364169320
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		DEFA14A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-24389
		FILM NUMBER:		15789137

	BUSINESS ADDRESS:	
		STREET 1:		1901 SOUTH MYERS ROAD
		STREET 2:		SUITE 210
		CITY:			OAKBROOK TERRACE
		STATE:			IL
		ZIP:			60181
		BUSINESS PHONE:		6309328844

	MAIL ADDRESS:	
		STREET 1:		1919 S HIGHLAND AVE
		STREET 2:		STE 118 C
		CITY:			LOMBARD
		STATE:			IL
		ZIP:			60148
</SEC-HEADER>
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<TYPE>DEFA14A
<SEQUENCE>1
<FILENAME>d866892ddefa14a.htm
<DESCRIPTION>DEFA14A
<TEXT>
Document 1 - file: d866892ddefa14a.htm

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<SEQUENCE>2
<FILENAME>g866892na1.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 2 - file: g866892na1.jpg

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<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>g866892na2.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 3 - file: g866892na2.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>g866892na3.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 4 - file: g866892na3.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>5
<FILENAME>g866892na4.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 5 - file: g866892na4.jpg

</DOCUMENT>
</SEC-DOCUMENT>