<SEC-DOCUMENT>0001127602-17-000177-index.html : 20170103 <SEC-HEADER>0001127602-17-000177.hdr.sgml : 20170103 <ACCEPTANCE-DATETIME>20170103154217 ACCESSION NUMBER: 0001127602-17-000177 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20161231 FILED AS OF DATE: 20170103 DATE AS OF CHANGE: 20170103 ISSUER: COMPANY DATA: COMPANY CONFORMED NAME: MDU RESOURCES GROUP INC CENTRAL INDEX KEY: 0000067716 STANDARD INDUSTRIAL CLASSIFICATION: MINING, QUARRYING OF NONMETALLIC MINERALS (NO FUELS) [1400] IRS NUMBER: 410423660 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 BUSINESS ADDRESS: STREET 1: 1200 WEST CENTURY AVENUE CITY: BISMARCK STATE: ND ZIP: 58503 BUSINESS PHONE: 701-530-1059 MAIL ADDRESS: STREET 1: 1200 WEST CENTURY AVENUE CITY: BISMARCK STATE: ND ZIP: 58503 FORMER COMPANY: FORMER CONFORMED NAME: MONTANA DAKOTA UTILITIES CO DATE OF NAME CHANGE: 19850429 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: HELLERSTEIN MARK A CENTRAL INDEX KEY: 0001198283 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-03480 FILM NUMBER: 17501706 MAIL ADDRESS: STREET 1: 1776 LINCOLN ST STREET 2: STE 700 CITY: DENVER STATE: CO ZIP: 80203 </SEC-HEADER> <DOCUMENT> <TYPE>4 <SEQUENCE>1 <FILENAME>form4.xml <DESCRIPTION>PRIMARY DOCUMENT <TEXT> Document 1 - file: form4.html
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