0001593968-18-000459.txt : 20180302 0001593968-18-000459.hdr.sgml : 20180302 20180302134204 ACCESSION NUMBER: 0001593968-18-000459 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20180228 FILED AS OF DATE: 20180302 DATE AS OF CHANGE: 20180302 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Taylor Teresa CENTRAL INDEX KEY: 0001443289 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-31303 FILM NUMBER: 18661043 MAIL ADDRESS: STREET 1: FIRST INTERSTATE BANCSYSTEM, INC STREET 2: PO BOX 30918 CITY: BILLINGS STATE: MT ZIP: 59116-0918 ISSUER: COMPANY DATA: COMPANY CONFORMED NAME: BLACK HILLS CORP /SD/ CENTRAL INDEX KEY: 0001130464 STANDARD INDUSTRIAL CLASSIFICATION: ELECTRIC SERVICES [4911] IRS NUMBER: 460458824 STATE OF INCORPORATION: SD FISCAL YEAR END: 1231 BUSINESS ADDRESS: STREET 1: 7001 MT RUSHMORE RD STREET 2: PO BOX 1400 CITY: RAPID CITY STATE: SD ZIP: 57709 BUSINESS PHONE: 6057212343 MAIL ADDRESS: STREET 1: 7001 MT RUSHMORE RD STREET 2: PO BOX 1400 CITY: RAPID STATE: SD ZIP: 57709 FORMER COMPANY: FORMER CONFORMED NAME: BLACK HILLS HOLDING CORP DATE OF NAME CHANGE: 20001222 4 1 primary_01.xml PRIMARY DOCUMENT X0306 4 2018-02-28 0001130464 BLACK HILLS CORP /SD/ BKH 0001443289 Taylor Teresa PO BOX 1400 RAPID CITY SD 57709 true false false false Common Stock 2018-03-01 4 I false 8.4710 51.1943 A 921.4491 D Common Stock 2018-03-01 4 I false 63.0770 51.1943 A 984.5261 D Phantom Stock Unit 2018-02-28 4 A false 451.2046 50.79 A Common Stock 451.2046 2189.37 I By Trust Phantom Stock Unit 2018-03-01 4 A false 20.3138 51.1943 A Common Stock 20.3138 2209.6838 I By Trust 1 for 1 conversion ratio Derivative security is exercisable upon retirement under terms of the agreement. Derivative security expires upon retirement under terms of the agreement. /s/Lorna J. Gunderman 2018-03-02