<SEC-DOCUMENT>0001193125-17-151491-index.html : 20170501
<SEC-HEADER>0001193125-17-151491.hdr.sgml : 20170501
<ACCEPTANCE-DATETIME>20170501145557
ACCESSION NUMBER:		0001193125-17-151491
CONFORMED SUBMISSION TYPE:	DEFA14A
PUBLIC DOCUMENT COUNT:		9
FILED AS OF DATE:		20170501
DATE AS OF CHANGE:		20170501
EFFECTIVENESS DATE:		20170501

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			NATURAL GAS SERVICES GROUP INC
		CENTRAL INDEX KEY:			0001084991
		STANDARD INDUSTRIAL CLASSIFICATION:	OIL, GAS FIELD SERVICES, NBC [1389]
		IRS NUMBER:				752811855
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		DEFA14A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-31398
		FILM NUMBER:		17800148

	BUSINESS ADDRESS:	
		STREET 1:		508 WEST WALL STREET
		STREET 2:		SUITE 550
		CITY:			MIDLAND
		STATE:			TX
		ZIP:			79701
		BUSINESS PHONE:		432-262-2700

	MAIL ADDRESS:	
		STREET 1:		508 WEST WALL STREET
		STREET 2:		SUITE 550
		CITY:			MIDLAND
		STATE:			TX
		ZIP:			79701
</SEC-HEADER>
<DOCUMENT>
<TYPE>DEFA14A
<SEQUENCE>1
<FILENAME>d369655ddefa14a.htm
<DESCRIPTION>DEFA14A
<TEXT>
Document 1 - file: d369655ddefa14a.htm

</DOCUMENT>
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<TYPE>GRAPHIC
<SEQUENCE>2
<FILENAME>g369655noticearrow.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 2 - file: g369655noticearrow.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>g369655noticepg001.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 3 - file: g369655noticepg001.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>g369655noticepg002.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 4 - file: g369655noticepg002.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>5
<FILENAME>g369655noticepg003.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 5 - file: g369655noticepg003.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>6
<FILENAME>g369655noticepg004.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 6 - file: g369655noticepg004.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>7
<FILENAME>g369655pcpg001a.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 7 - file: g369655pcpg001a.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>8
<FILENAME>g369655pcpg001b.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 8 - file: g369655pcpg001b.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>9
<FILENAME>g369655pcpg002.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 9 - file: g369655pcpg002.jpg

</DOCUMENT>
</SEC-DOCUMENT>