<SEC-DOCUMENT>0001258897-16-002936-index.html : 20160209 <SEC-HEADER>0001258897-16-002936.hdr.sgml : 20160209 <ACCEPTANCE-DATETIME>20160209162234 ACCESSION NUMBER: 0001258897-16-002936 CONFORMED SUBMISSION TYPE: SC 13G/A PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20160209 DATE AS OF CHANGE: 20160209 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 13G/A SEC ACT: 1934 Act SEC FILE NUMBER: 005-78868 FILM NUMBER: 161400046 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 FILED BY: COMPANY DATA: COMPANY CONFORMED NAME: DIMENSIONAL FUND ADVISORS LP CENTRAL INDEX KEY: 0000354204 STANDARD INDUSTRIAL CLASSIFICATION: UNKNOWN SIC - 0000 [0000] IRS NUMBER: 222370029 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: SC 13G/A BUSINESS ADDRESS: STREET 1: 6300 BEE CAVE ROAD STREET 2: BUILDING ONE CITY: AUSTIN STATE: TX ZIP: 78746 BUSINESS PHONE: (512) 306-7400 MAIL ADDRESS: STREET 1: 6300 BEE CAVE ROAD STREET 2: BUILDING ONE CITY: AUSTIN STATE: TX ZIP: 78746 FORMER COMPANY: FORMER CONFORMED NAME: DIMENSIONAL FUND ADVISORS INC DATE OF NAME CHANGE: 19920929 </SEC-HEADER> <DOCUMENT> <TYPE>SC 13G/A <SEQUENCE>1 <FILENAME>rrd370.htm <DESCRIPTION>SCHEDULE 13G/A <TEXT> Document 1 - file: rrd370.htm
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