<SEC-DOCUMENT>0001193125-21-001107-index.html : 20210104
<SEC-HEADER>0001193125-21-001107.hdr.sgml : 20210104
<ACCEPTANCE-DATETIME>20210104171751
ACCESSION NUMBER:		0001193125-21-001107
CONFORMED SUBMISSION TYPE:	SC 13D
PUBLIC DOCUMENT COUNT:		3
FILED AS OF DATE:		20210104
DATE AS OF CHANGE:		20210104
GROUP MEMBERS:		MILL ROAD CAPITAL III GP LLC
GROUP MEMBERS:		THOMAS E. LYNCH

SUBJECT COMPANY:	

	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:		SC 13D
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-78868
		FILM NUMBER:		21502755

	BUSINESS ADDRESS:	
		STREET 1:		404 VETERANS AIRPARK LANE
		STREET 2:		SUITE 300
		CITY:			MIDLAND
		STATE:			TX
		ZIP:			79705
		BUSINESS PHONE:		(432) 262-2700

	MAIL ADDRESS:	
		STREET 1:		404 VETERANS AIRPARK LANE
		STREET 2:		SUITE 300
		CITY:			MIDLAND
		STATE:			TX
		ZIP:			79705

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Mill Road Capital III, L.P.
		CENTRAL INDEX KEY:			0001767199
		IRS NUMBER:				981461868
		STATE OF INCORPORATION:			E9
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13D

	BUSINESS ADDRESS:	
		STREET 1:		C/O MILL ROAD CAPITAL MANAGEMENT LLC
		STREET 2:		382 GREENWICH AVENUE, SUITE ONE
		CITY:			GREENWICH
		STATE:			CT
		ZIP:			06830
		BUSINESS PHONE:		203-987-3500

	MAIL ADDRESS:	
		STREET 1:		C/O MILL ROAD CAPITAL MANAGEMENT LLC
		STREET 2:		382 GREENWICH AVENUE, SUITE ONE
		CITY:			GREENWICH
		STATE:			CT
		ZIP:			06830
</SEC-HEADER>
<DOCUMENT>
<TYPE>SC 13D
<SEQUENCE>1
<FILENAME>d17055dsc13d.htm
<DESCRIPTION>SC 13D
<TEXT>
Document 1 - file: d17055dsc13d.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-1
<SEQUENCE>2
<FILENAME>d17055dex1.htm
<DESCRIPTION>EX-1
<TEXT>
Document 2 - file: d17055dex1.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-2
<SEQUENCE>3
<FILENAME>d17055dex2.htm
<DESCRIPTION>EX-2
<TEXT>
Document 3 - file: d17055dex2.htm

</DOCUMENT>
</SEC-DOCUMENT>