<SEC-DOCUMENT>0000944480-21-000022-index.html : 20210430
<SEC-HEADER>0000944480-21-000022.hdr.sgml : 20210430
<ACCEPTANCE-DATETIME>20210430160358
ACCESSION NUMBER:		0000944480-21-000022
CONFORMED SUBMISSION TYPE:	DEFA14A
PUBLIC DOCUMENT COUNT:		3
FILED AS OF DATE:		20210430
DATE AS OF CHANGE:		20210430

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			GSE SYSTEMS INC
		CENTRAL INDEX KEY:			0000944480
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-PREPACKAGED SOFTWARE [7372]
		IRS NUMBER:				521868008
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		DEFA14A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-14785
		FILM NUMBER:		21877748

	BUSINESS ADDRESS:	
		STREET 1:		6940 COLUMBIA GATEWAY DRIVE, SUITE 470
		CITY:			COLUMBIA
		STATE:			MD
		ZIP:			21046-3308
		BUSINESS PHONE:		4109707874

	MAIL ADDRESS:	
		STREET 1:		6940 COLUMBIA GATEWAY DRIVE, SUITE 470
		CITY:			COLUMBIA
		STATE:			MD
		ZIP:			21046-3308
</SEC-HEADER>
<DOCUMENT>
<TYPE>DEFA14A
<SEQUENCE>1
<FILENAME>defa14a_notice.htm
<DESCRIPTION>GSE SYSTEMS FORM DEFA14A - PROXY NOTICE
<TEXT>
Document 1 - file: defa14a_notice.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>2
<FILENAME>image00002.jpg
<TEXT>
Document 2 - file: image00002.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>image00003.jpg
<TEXT>
Document 3 - file: image00003.jpg

</DOCUMENT>
</SEC-DOCUMENT>