<SEC-DOCUMENT>0001258897-18-001256-index.html : 20180209 <SEC-HEADER>0001258897-18-001256.hdr.sgml : 20180209 <ACCEPTANCE-DATETIME>20180209085539 ACCESSION NUMBER: 0001258897-18-001256 CONFORMED SUBMISSION TYPE: SC 13G/A PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20180209 DATE AS OF CHANGE: 20180209 SUBJECT COMPANY: COMPANY DATA: COMPANY CONFORMED NAME: PDC ENERGY, INC. CENTRAL INDEX KEY: 0000077877 STANDARD INDUSTRIAL CLASSIFICATION: CRUDE PETROLEUM & NATURAL GAS [1311] IRS NUMBER: 952636730 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: SC 13G/A SEC ACT: 1934 Act SEC FILE NUMBER: 005-36551 FILM NUMBER: 18588264 BUSINESS ADDRESS: STREET 1: 1775 SHERMAN STREET STREET 2: SUITE 3000 CITY: DENVER STATE: CO ZIP: 80203 BUSINESS PHONE: 303-860-5800 MAIL ADDRESS: STREET 1: PDC ENERGY, INC. STREET 2: 1775 SHERMAN ST CITY: SUITE 3000 STATE: CO ZIP: 80203 FORMER COMPANY: FORMER CONFORMED NAME: PETROLEUM DEVELOPMENT CORP DATE OF NAME CHANGE: 19920703 FORMER COMPANY: FORMER CONFORMED NAME: YELLOW WING URANIUM CORP DATE OF NAME CHANGE: 19730606 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>dfs400.htm <DESCRIPTION>SCHEDULE 13G/A <TEXT> Document 1 - file: dfs400.htm
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