<?xml version="1.0" ?><!--XBRL Document Created with Wdesk from Workiva--><!--Copyright 2020 Workiva--><!--r:3d4e7c9d-9fe7-4909-82a3-de857c1b99cf,g:470ba05c-a8f3-49f9-9247-2451d2de99b0,d:cc9ab40a6a7a4e2184ea6b326819cc90--><html xmlns="http://www.w3.org/1999/xhtml" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:ixt-sec="http://www.sec.gov/inlineXBRL/transformation/2015-08-31" xmlns:ix="http://www.xbrl.org/2013/inlineXBRL" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:bkh="http://www.blackhillscorp.com/20200916" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:ixt="http://www.xbrl.org/inlineXBRL/transformation/2015-02-26" xmlns:dei="http://xbrl.sec.gov/dei/2019-01-31" xmlns:link="http://www.xbrl.org/2003/linkbase" xml:lang="en-US"><head><meta http-equiv="Content-Type" content="text/html"/>


<title>bkh-20200916</title></head><body><div style="display:none"><ix:header><ix:hidden><ix:nonNumeric contextRef="id8a8313948c2473eacdf77cf7ad4b07c_D20200916-20200916" name="dei:EntityCentralIndexKey" id="id3VybDovL2RvY3MudjEvZG9jOmNjOWFiNDBhNmE3YTRlMjE4NGVhNmIzMjY4MTljYzkwL3NlYzpjYzlhYjQwYTZhN2E0ZTIxODRlYTZiMzI2ODE5Y2M5MF80L2ZyYWc6NzE4OTMxODE1NGQyNGJmZjgzMmJjMjc4ZDVhZjY2MjkvdGFibGU6MDc2Y2ZjMDBhY2FhNGIyODkxZTM0YTkxNjJjMjg2ZGUvdGFibGVyYW5nZTowNzZjZmMwMGFjYWE0YjI4OTFlMzRhOTE2MmMyODZkZV8wLTEtMS0xLTA_b70238d7-ff7d-476f-97fc-3b985494ce03">0001130464</ix:nonNumeric><ix:nonNumeric contextRef="id8a8313948c2473eacdf77cf7ad4b07c_D20200916-20200916" name="dei:AmendmentFlag" 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style="text-align:center;"><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:'Times New Roman',sans-serif;font-size:11pt;font-weight:700;line-height:120%;">UNITED STATES</span></div><div style="text-align:center;"><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:'Times New Roman',sans-serif;font-size:11pt;font-weight:700;line-height:120%;">SECURITIES AND EXCHANGE COMMISSION</span></div><div style="text-align:center;"><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:'Times New Roman',sans-serif;font-size:11pt;font-weight:700;line-height:120%;">Washington, D.C. 20549</span></div><div style="text-align:center;"><span><br/></span></div><div style="text-align:center;"><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:'Times New Roman',sans-serif;font-size:11pt;font-weight:700;line-height:120%;">Form <ix:nonNumeric contextRef="id8a8313948c2473eacdf77cf7ad4b07c_D20200916-20200916" name="dei:DocumentType" id="id3VybDovL2RvY3MudjEvZG9jOmNjOWFiNDBhNmE3YTRlMjE4NGVhNmIzMjY4MTljYzkwL3NlYzpjYzlhYjQwYTZhN2E0ZTIxODRlYTZiMzI2ODE5Y2M5MF8xL2ZyYWc6ZTE2OTNlZWQ1MmUzNGEzZjlkOTNkNTQyZWZiOTcwOWYvdGV4dHJlZ2lvbjplMTY5M2VlZDUyZTM0YTNmOWQ5M2Q1NDJlZmI5NzA5Zl80Mzk4MDQ2NTEyNzY2_1d3bdc2b-ba39-4578-ada5-220d4f301225">8-K</ix:nonNumeric> </span></div><div><span><br/></span></div><div style="text-align:center;"><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:'Times New Roman',sans-serif;font-size:11pt;font-weight:400;line-height:120%;">CURRENT REPORT</span></div><div style="text-align:center;"><span><br/></span></div><div style="text-align:center;"><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:'Times New Roman',sans-serif;font-size:11pt;font-weight:400;line-height:120%;">PURSUANT TO SECTION 13 OF 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934</span></div><div style="text-align:center;"><span><br/></span></div><div style="text-align:center;"><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:'Times New Roman',sans-serif;font-size:11pt;font-weight:400;line-height:120%;">Date of Report (Date of earliest event reported) <ix:nonNumeric contextRef="id8a8313948c2473eacdf77cf7ad4b07c_D20200916-20200916" format="ixt:datemonthdayyearen" name="dei:DocumentPeriodEndDate" id="id3VybDovL2RvY3MudjEvZG9jOmNjOWFiNDBhNmE3YTRlMjE4NGVhNmIzMjY4MTljYzkwL3NlYzpjYzlhYjQwYTZhN2E0ZTIxODRlYTZiMzI2ODE5Y2M5MF8xL2ZyYWc6ZTE2OTNlZWQ1MmUzNGEzZjlkOTNkNTQyZWZiOTcwOWYvdGV4dHJlZ2lvbjplMTY5M2VlZDUyZTM0YTNmOWQ5M2Q1NDJlZmI5NzA5Zl80Mzk4MDQ2NTEyODM5_c01ea069-9892-4be5-be14-e26205cf46d8">September 16, 2020</ix:nonNumeric> </span></div><div><span><br/></span></div><div style="text-align:center;"><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:'Times New Roman',sans-serif;font-size:11pt;font-weight:700;line-height:120%;"><ix:nonNumeric contextRef="id8a8313948c2473eacdf77cf7ad4b07c_D20200916-20200916" name="dei:EntityRegistrantName" id="id3VybDovL2RvY3MudjEvZG9jOmNjOWFiNDBhNmE3YTRlMjE4NGVhNmIzMjY4MTljYzkwL3NlYzpjYzlhYjQwYTZhN2E0ZTIxODRlYTZiMzI2ODE5Y2M5MF8xL2ZyYWc6ZTE2OTNlZWQ1MmUzNGEzZjlkOTNkNTQyZWZiOTcwOWYvdGV4dHJlZ2lvbjplMTY5M2VlZDUyZTM0YTNmOWQ5M2Q1NDJlZmI5NzA5Zl80Mzk4MDQ2NTEyNzg3_df61c2e1-f099-4ff3-ba36-9a5a87c01791">Black Hills Corporation</ix:nonNumeric> </span></div><div style="text-align:center;"><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:120%;">(Exact name of registrant as specified in its charter)</span></div><div style="text-align:center;"><span><br/></span></div><div style="text-align:center;"><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:'Times New Roman',sans-serif;font-size:11pt;font-weight:400;line-height:120%;"><ix:nonNumeric contextRef="id8a8313948c2473eacdf77cf7ad4b07c_D20200916-20200916" format="ixt-sec:stateprovnameen" name="dei:EntityIncorporationStateCountryCode" id="id3VybDovL2RvY3MudjEvZG9jOmNjOWFiNDBhNmE3YTRlMjE4NGVhNmIzMjY4MTljYzkwL3NlYzpjYzlhYjQwYTZhN2E0ZTIxODRlYTZiMzI2ODE5Y2M5MF8xL2ZyYWc6ZTE2OTNlZWQ1MmUzNGEzZjlkOTNkNTQyZWZiOTcwOWYvdGV4dHJlZ2lvbjplMTY5M2VlZDUyZTM0YTNmOWQ5M2Q1NDJlZmI5NzA5Zl80Mzk4MDQ2NTEyNzY3_fb2d4729-2d9a-43b6-8c32-eed200fe24df">South Dakota</ix:nonNumeric> </span></div><div style="text-align:center;"><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:120%;">(State or other jurisdiction of incorporation)</span></div><div><span><br/></span></div><div style="text-align:center;"><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:'Times New Roman',sans-serif;font-size:11pt;font-weight:400;line-height:120%;"><ix:nonNumeric contextRef="id8a8313948c2473eacdf77cf7ad4b07c_D20200916-20200916" name="dei:EntityFileNumber" id="id3VybDovL2RvY3MudjEvZG9jOmNjOWFiNDBhNmE3YTRlMjE4NGVhNmIzMjY4MTljYzkwL3NlYzpjYzlhYjQwYTZhN2E0ZTIxODRlYTZiMzI2ODE5Y2M5MF8xL2ZyYWc6ZTE2OTNlZWQ1MmUzNGEzZjlkOTNkNTQyZWZiOTcwOWYvdGV4dHJlZ2lvbjplMTY5M2VlZDUyZTM0YTNmOWQ5M2Q1NDJlZmI5NzA5Zl80Mzk4MDQ2NTEyNzg4_f68d301e-44fd-4f20-8714-2bbce4a8e917">001-31303</ix:nonNumeric> </span></div><div style="text-align:center;"><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:120%;">(Commission File Number)</span></div><div style="text-align:center;"><span><br/></span></div><div style="text-align:center;"><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:'Times New Roman',sans-serif;font-size:11pt;font-weight:400;line-height:120%;"><ix:nonNumeric contextRef="id8a8313948c2473eacdf77cf7ad4b07c_D20200916-20200916" name="dei:EntityTaxIdentificationNumber" id="id3VybDovL2RvY3MudjEvZG9jOmNjOWFiNDBhNmE3YTRlMjE4NGVhNmIzMjY4MTljYzkwL3NlYzpjYzlhYjQwYTZhN2E0ZTIxODRlYTZiMzI2ODE5Y2M5MF8xL2ZyYWc6ZTE2OTNlZWQ1MmUzNGEzZjlkOTNkNTQyZWZiOTcwOWYvdGV4dHJlZ2lvbjplMTY5M2VlZDUyZTM0YTNmOWQ5M2Q1NDJlZmI5NzA5Zl80Mzk4MDQ2NTEyNzg5_f0cde91e-62cf-427c-b2a9-e1a0487acb2b">46-0458824</ix:nonNumeric> </span></div><div style="text-align:center;"><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:120%;">(IRS Employer Identification No.)</span></div><div style="text-align:center;"><span><br/></span></div><div style="text-align:center;"><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:'Times New Roman',sans-serif;font-size:11pt;font-weight:400;line-height:120%;"><ix:nonNumeric contextRef="id8a8313948c2473eacdf77cf7ad4b07c_D20200916-20200916" name="dei:EntityAddressAddressLine1" id="id3VybDovL2RvY3MudjEvZG9jOmNjOWFiNDBhNmE3YTRlMjE4NGVhNmIzMjY4MTljYzkwL3NlYzpjYzlhYjQwYTZhN2E0ZTIxODRlYTZiMzI2ODE5Y2M5MF8xL2ZyYWc6ZTE2OTNlZWQ1MmUzNGEzZjlkOTNkNTQyZWZiOTcwOWYvdGV4dHJlZ2lvbjplMTY5M2VlZDUyZTM0YTNmOWQ5M2Q1NDJlZmI5NzA5Zl80Mzk4MDQ2NTEyNzkw_726d44f0-a8f5-45ad-8192-2ed23019afd0">7001 Mount Rushmore Road</ix:nonNumeric> </span></div><div style="text-align:center;"><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:'Times New Roman',sans-serif;font-size:11pt;font-weight:400;line-height:120%;"><ix:nonNumeric contextRef="id8a8313948c2473eacdf77cf7ad4b07c_D20200916-20200916" name="dei:EntityAddressCityOrTown" id="id3VybDovL2RvY3MudjEvZG9jOmNjOWFiNDBhNmE3YTRlMjE4NGVhNmIzMjY4MTljYzkwL3NlYzpjYzlhYjQwYTZhN2E0ZTIxODRlYTZiMzI2ODE5Y2M5MF8xL2ZyYWc6ZTE2OTNlZWQ1MmUzNGEzZjlkOTNkNTQyZWZiOTcwOWYvdGV4dHJlZ2lvbjplMTY5M2VlZDUyZTM0YTNmOWQ5M2Q1NDJlZmI5NzA5Zl80Mzk4MDQ2NTEyNzkx_d158ef4d-e7d9-4bff-9b1f-2d7ca725a1e2">Rapid City</ix:nonNumeric>, <ix:nonNumeric contextRef="id8a8313948c2473eacdf77cf7ad4b07c_D20200916-20200916" format="ixt-sec:stateprovnameen" name="dei:EntityAddressStateOrProvince" id="id3VybDovL2RvY3MudjEvZG9jOmNjOWFiNDBhNmE3YTRlMjE4NGVhNmIzMjY4MTljYzkwL3NlYzpjYzlhYjQwYTZhN2E0ZTIxODRlYTZiMzI2ODE5Y2M5MF8xL2ZyYWc6ZTE2OTNlZWQ1MmUzNGEzZjlkOTNkNTQyZWZiOTcwOWYvdGV4dHJlZ2lvbjplMTY5M2VlZDUyZTM0YTNmOWQ5M2Q1NDJlZmI5NzA5Zl80Mzk4MDQ2NTEyNzky_fae18ba1-ebd2-458e-92d7-2ceb8e1d478c">South Dakota</ix:nonNumeric>  <ix:nonNumeric contextRef="id8a8313948c2473eacdf77cf7ad4b07c_D20200916-20200916" name="dei:EntityAddressPostalZipCode" id="id3VybDovL2RvY3MudjEvZG9jOmNjOWFiNDBhNmE3YTRlMjE4NGVhNmIzMjY4MTljYzkwL3NlYzpjYzlhYjQwYTZhN2E0ZTIxODRlYTZiMzI2ODE5Y2M5MF8xL2ZyYWc6ZTE2OTNlZWQ1MmUzNGEzZjlkOTNkNTQyZWZiOTcwOWYvdGV4dHJlZ2lvbjplMTY5M2VlZDUyZTM0YTNmOWQ5M2Q1NDJlZmI5NzA5Zl80Mzk4MDQ2NTEyNzk0_1fedaf0b-e5d8-48d3-a2be-696b1f3284ba">57702</ix:nonNumeric> </span></div><div style="text-align:center;"><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:120%;">(Address of principal executive offices)</span></div><div style="text-align:center;"><span><br/></span></div><div style="text-align:center;"><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:'Times New Roman',sans-serif;font-size:11pt;font-weight:400;line-height:120%;">(<ix:nonNumeric contextRef="id8a8313948c2473eacdf77cf7ad4b07c_D20200916-20200916" name="dei:CityAreaCode" id="id3VybDovL2RvY3MudjEvZG9jOmNjOWFiNDBhNmE3YTRlMjE4NGVhNmIzMjY4MTljYzkwL3NlYzpjYzlhYjQwYTZhN2E0ZTIxODRlYTZiMzI2ODE5Y2M5MF8xL2ZyYWc6ZTE2OTNlZWQ1MmUzNGEzZjlkOTNkNTQyZWZiOTcwOWYvdGV4dHJlZ2lvbjplMTY5M2VlZDUyZTM0YTNmOWQ5M2Q1NDJlZmI5NzA5Zl80Mzk4MDQ2NTEyODEz_77cde2ec-d948-42c9-b7fa-b43658615a6d">605</ix:nonNumeric>) <ix:nonNumeric contextRef="id8a8313948c2473eacdf77cf7ad4b07c_D20200916-20200916" name="dei:LocalPhoneNumber" id="id3VybDovL2RvY3MudjEvZG9jOmNjOWFiNDBhNmE3YTRlMjE4NGVhNmIzMjY4MTljYzkwL3NlYzpjYzlhYjQwYTZhN2E0ZTIxODRlYTZiMzI2ODE5Y2M5MF8xL2ZyYWc6ZTE2OTNlZWQ1MmUzNGEzZjlkOTNkNTQyZWZiOTcwOWYvdGV4dHJlZ2lvbjplMTY5M2VlZDUyZTM0YTNmOWQ5M2Q1NDJlZmI5NzA5Zl80Mzk4MDQ2NTEyODA3_1b64d59f-ea8a-441b-9b23-c139437838a2">721-1700</ix:nonNumeric> </span></div><div style="text-align:center;"><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:120%;">(Registrants telephone number)</span></div><div style="text-align:center;"><span><br/></span></div><div style="text-align:center;"><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:'Times New Roman',sans-serif;font-size:11pt;font-weight:400;line-height:120%;">Not Applicable</span></div><div style="text-align:center;"><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:120%;">(Former name or former address, if changed since last report)</span></div><div><span><br/></span></div><div><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%;">Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):</span></div><div style="text-align:center;margin-top:5pt;margin-bottom:5pt;"><table style="border-collapse:collapse;display:inline-table;vertical-align:top;width:96.468%;"><tr><td style="width:1.0%;"></td><td style="width:2.999%;"></td><td style="width:0.1%;"></td><td style="width:0.1%;"></td><td style="width:2.581%;"></td><td style="width:0.1%;"></td><td style="width:1.0%;"></td><td style="width:92.020%;"></td><td style="width:0.1%;"></td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"><span style="font-size:10pt;font-weight:400;font-family:'Arial Unicode MS',sans-serif;color:#000000;background-color:rgb(255,255,255, 0.0);"><ix:nonNumeric contextRef="id8a8313948c2473eacdf77cf7ad4b07c_D20200916-20200916" format="ixt-sec:boolballotbox" name="dei:WrittenCommunications" id="id3VybDovL2RvY3MudjEvZG9jOmNjOWFiNDBhNmE3YTRlMjE4NGVhNmIzMjY4MTljYzkwL3NlYzpjYzlhYjQwYTZhN2E0ZTIxODRlYTZiMzI2ODE5Y2M5MF8xL2ZyYWc6ZTE2OTNlZWQ1MmUzNGEzZjlkOTNkNTQyZWZiOTcwOWYvdGFibGU6ZjJlZjdjYWZmYTBiNGVmZDg1ZmY1MmM1ODAwYjI0ZTgvdGFibGVyYW5nZTpmMmVmN2NhZmZhMGI0ZWZkODVmZjUyYzU4MDBiMjRlOF8wLTAtMS0xLTA_23e2b0f8-2fe7-4f6d-9fab-8ac95add9d78">&#9744;</ix:nonNumeric></span></td><td colspan="3" style="background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"></td><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"><span style="font-size:10pt;font-weight:400;font-family:'Times New Roman',sans-serif;color:#000000;background-color:rgb(255,255,255, 0.0);">Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)</span></td></tr><tr><td colspan="3" style="height:12pt;background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"></td><td colspan="3" style="height:12pt;background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"></td><td colspan="3" style="height:12pt;background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"></td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"><span style="font-size:10pt;font-weight:400;font-family:'Arial Unicode MS',sans-serif;color:#000000;background-color:rgb(255,255,255, 0.0);"><ix:nonNumeric contextRef="id8a8313948c2473eacdf77cf7ad4b07c_D20200916-20200916" format="ixt-sec:boolballotbox" name="dei:SolicitingMaterial" id="id3VybDovL2RvY3MudjEvZG9jOmNjOWFiNDBhNmE3YTRlMjE4NGVhNmIzMjY4MTljYzkwL3NlYzpjYzlhYjQwYTZhN2E0ZTIxODRlYTZiMzI2ODE5Y2M5MF8xL2ZyYWc6ZTE2OTNlZWQ1MmUzNGEzZjlkOTNkNTQyZWZiOTcwOWYvdGFibGU6ZjJlZjdjYWZmYTBiNGVmZDg1ZmY1MmM1ODAwYjI0ZTgvdGFibGVyYW5nZTpmMmVmN2NhZmZhMGI0ZWZkODVmZjUyYzU4MDBiMjRlOF8yLTAtMS0xLTA_84827e53-223e-4769-a66b-7e62499ed272">&#9744;</ix:nonNumeric></span></td><td colspan="3" style="background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"></td><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"><span style="font-size:10pt;font-weight:400;font-family:'Times New Roman',sans-serif;color:#000000;background-color:rgb(255,255,255, 0.0);">Soliciting materials pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)</span></td></tr><tr><td colspan="3" style="height:12pt;background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"></td><td colspan="3" style="height:12pt;background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"></td><td colspan="3" style="height:12pt;background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"></td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"><span style="font-size:10pt;font-weight:400;font-family:'Arial Unicode MS',sans-serif;color:#000000;background-color:rgb(255,255,255, 0.0);"><ix:nonNumeric contextRef="id8a8313948c2473eacdf77cf7ad4b07c_D20200916-20200916" format="ixt-sec:boolballotbox" name="dei:PreCommencementTenderOffer" id="id3VybDovL2RvY3MudjEvZG9jOmNjOWFiNDBhNmE3YTRlMjE4NGVhNmIzMjY4MTljYzkwL3NlYzpjYzlhYjQwYTZhN2E0ZTIxODRlYTZiMzI2ODE5Y2M5MF8xL2ZyYWc6ZTE2OTNlZWQ1MmUzNGEzZjlkOTNkNTQyZWZiOTcwOWYvdGFibGU6ZjJlZjdjYWZmYTBiNGVmZDg1ZmY1MmM1ODAwYjI0ZTgvdGFibGVyYW5nZTpmMmVmN2NhZmZhMGI0ZWZkODVmZjUyYzU4MDBiMjRlOF80LTAtMS0xLTA_c457d67c-7349-4abb-9208-30c9d3bb5fa5">&#9744;</ix:nonNumeric></span></td><td colspan="3" style="background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"></td><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"><span style="font-size:10pt;font-weight:400;font-family:'Times New Roman',sans-serif;color:#000000;background-color:rgb(255,255,255, 0.0);">Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))</span></td></tr><tr><td colspan="3" style="height:12pt;background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"></td><td colspan="3" style="height:12pt;background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"></td><td colspan="3" style="height:12pt;background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"></td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"><span style="font-size:10pt;font-weight:400;font-family:'Arial Unicode MS',sans-serif;color:#000000;background-color:rgb(255,255,255, 0.0);"><ix:nonNumeric contextRef="id8a8313948c2473eacdf77cf7ad4b07c_D20200916-20200916" format="ixt-sec:boolballotbox" name="dei:PreCommencementIssuerTenderOffer" id="id3VybDovL2RvY3MudjEvZG9jOmNjOWFiNDBhNmE3YTRlMjE4NGVhNmIzMjY4MTljYzkwL3NlYzpjYzlhYjQwYTZhN2E0ZTIxODRlYTZiMzI2ODE5Y2M5MF8xL2ZyYWc6ZTE2OTNlZWQ1MmUzNGEzZjlkOTNkNTQyZWZiOTcwOWYvdGFibGU6ZjJlZjdjYWZmYTBiNGVmZDg1ZmY1MmM1ODAwYjI0ZTgvdGFibGVyYW5nZTpmMmVmN2NhZmZhMGI0ZWZkODVmZjUyYzU4MDBiMjRlOF82LTAtMS0xLTA_bf722b06-ffa5-4647-b28c-752fcd682c4d">&#9744;</ix:nonNumeric></span></td><td colspan="3" style="background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"></td><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"><span style="font-size:10pt;font-weight:400;font-family:'Times New Roman',sans-serif;color:#000000;background-color:rgb(255,255,255, 0.0);">Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)</span></td></tr></table></div><div style="text-align:center;margin-top:5pt;margin-bottom:5pt;"><table style="border-collapse:collapse;display:inline-table;vertical-align:top;width:96.327%;"><tr><td style="width:1.0%;"></td><td style="width:34.237%;"></td><td style="width:0.1%;"></td><td style="width:1.0%;"></td><td style="width:28.225%;"></td><td style="width:0.1%;"></td><td style="width:1.0%;"></td><td style="width:34.238%;"></td><td style="width:0.1%;"></td></tr><tr><td colspan="9" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"><span style="font-size:9pt;font-weight:400;font-family:'Times New Roman',sans-serif;color:#000000;background-color:rgb(255,255,255, 0.0);">Securities registered pursuant to Section 12(b) of the Act:</span></td><td colspan="3" style="display:none;"></td><td colspan="3" style="display:none;"></td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"><span style="font-size:9pt;font-weight:400;font-family:'Times New Roman',sans-serif;color:#000000;background-color:rgb(255,255,255, 0.0);">Title of each class</span></td><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"><span style="font-size:9pt;font-weight:400;font-family:'Times New Roman',sans-serif;color:#000000;background-color:rgb(255,255,255, 0.0);">Trading Symbol(s)</span></td><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"><span style="font-size:9pt;font-weight:400;font-family:'Times New Roman',sans-serif;color:#000000;background-color:rgb(255,255,255, 0.0);">Name of each exchange on which registered</span></td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"><span style="font-size:9pt;font-weight:400;font-family:'Times New Roman',sans-serif;color:#000000;background-color:rgb(255,255,255, 0.0);"><ix:nonNumeric contextRef="id8a8313948c2473eacdf77cf7ad4b07c_D20200916-20200916" name="dei:Security12bTitle" id="id3VybDovL2RvY3MudjEvZG9jOmNjOWFiNDBhNmE3YTRlMjE4NGVhNmIzMjY4MTljYzkwL3NlYzpjYzlhYjQwYTZhN2E0ZTIxODRlYTZiMzI2ODE5Y2M5MF8xL2ZyYWc6ZTE2OTNlZWQ1MmUzNGEzZjlkOTNkNTQyZWZiOTcwOWYvdGFibGU6NjQ2M2YzOWFkMjYyNDc0ZjhjNTljNWY0MDEzYjZkM2MvdGFibGVyYW5nZTo2NDYzZjM5YWQyNjI0NzRmOGM1OWM1ZjQwMTNiNmQzY18yLTAtMS0xLTA_383d95c6-d0ca-4218-bd81-356bc01c20b7">Common stock of $1.00 par value</ix:nonNumeric></span></td><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"><span style="font-size:9pt;font-weight:400;font-family:'Times New Roman',sans-serif;color:#000000;background-color:rgb(255,255,255, 0.0);"><ix:nonNumeric contextRef="id8a8313948c2473eacdf77cf7ad4b07c_D20200916-20200916" name="dei:TradingSymbol" id="id3VybDovL2RvY3MudjEvZG9jOmNjOWFiNDBhNmE3YTRlMjE4NGVhNmIzMjY4MTljYzkwL3NlYzpjYzlhYjQwYTZhN2E0ZTIxODRlYTZiMzI2ODE5Y2M5MF8xL2ZyYWc6ZTE2OTNlZWQ1MmUzNGEzZjlkOTNkNTQyZWZiOTcwOWYvdGFibGU6NjQ2M2YzOWFkMjYyNDc0ZjhjNTljNWY0MDEzYjZkM2MvdGFibGVyYW5nZTo2NDYzZjM5YWQyNjI0NzRmOGM1OWM1ZjQwMTNiNmQzY18yLTEtMS0xLTA_dac03119-7b82-49fd-adfe-cf80e36bec9a">BKH</ix:nonNumeric></span></td><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"><span style="font-size:9pt;font-weight:400;font-family:'Times New Roman',sans-serif;color:#000000;background-color:rgb(255,255,255, 0.0);"><ix:nonNumeric contextRef="id8a8313948c2473eacdf77cf7ad4b07c_D20200916-20200916" format="ixt-sec:exchnameen" name="dei:SecurityExchangeName" id="id3VybDovL2RvY3MudjEvZG9jOmNjOWFiNDBhNmE3YTRlMjE4NGVhNmIzMjY4MTljYzkwL3NlYzpjYzlhYjQwYTZhN2E0ZTIxODRlYTZiMzI2ODE5Y2M5MF8xL2ZyYWc6ZTE2OTNlZWQ1MmUzNGEzZjlkOTNkNTQyZWZiOTcwOWYvdGFibGU6NjQ2M2YzOWFkMjYyNDc0ZjhjNTljNWY0MDEzYjZkM2MvdGFibGVyYW5nZTo2NDYzZjM5YWQyNjI0NzRmOGM1OWM1ZjQwMTNiNmQzY18yLTItMS0xLTA_124a87c8-70e3-4f34-8d07-2b3d54ea5072">New York Stock Exchange</ix:nonNumeric></span></td></tr></table></div><div><span><br/></span></div><div><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%;">Indicate by check mark whether the Registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (&#167;230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (&#167;240.12b-2 of this chapter).</span></div><div style="text-align:center;margin-top:5pt;margin-bottom:5pt;"><table style="border-collapse:collapse;display:inline-table;vertical-align:top;width:100.000%;"><tr><td style="width:1.0%;"></td><td style="width:47.842%;"></td><td style="width:0.1%;"></td><td style="width:1.0%;"></td><td style="width:2.849%;"></td><td style="width:0.1%;"></td><td style="width:1.0%;"></td><td style="width:22.454%;"></td><td style="width:0.1%;"></td><td style="width:1.0%;"></td><td style="width:22.455%;"></td><td style="width:0.1%;"></td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"><span style="font-size:10pt;font-weight:400;font-family:'Times New Roman',sans-serif;color:#000000;background-color:rgb(255,255,255, 0.0);">Emerging Growth Company</span></td><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"><span style="font-size:10pt;font-weight:400;font-family:'Arial Unicode MS',sans-serif;color:#000000;background-color:rgb(255,255,255, 0.0);"><ix:nonNumeric contextRef="id8a8313948c2473eacdf77cf7ad4b07c_D20200916-20200916" format="ixt-sec:boolballotbox" name="dei:EntityEmergingGrowthCompany" id="id3VybDovL2RvY3MudjEvZG9jOmNjOWFiNDBhNmE3YTRlMjE4NGVhNmIzMjY4MTljYzkwL3NlYzpjYzlhYjQwYTZhN2E0ZTIxODRlYTZiMzI2ODE5Y2M5MF8xL2ZyYWc6ZTE2OTNlZWQ1MmUzNGEzZjlkOTNkNTQyZWZiOTcwOWYvdGFibGU6YzUwNjI0OGYzNTA2NGE1YjkzZGQ3YzYxMWYxYTlmODcvdGFibGVyYW5nZTpjNTA2MjQ4ZjM1MDY0YTViOTNkZDdjNjExZjFhOWY4N18wLTEtMS0xLTA_d7814ba7-6f74-4ac7-873b-13fc07a68b3a">&#9744;</ix:nonNumeric></span></td><td colspan="3" style="background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"></td><td colspan="3" style="background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"></td></tr></table></div><div><span><br/></span></div><div style="text-align:justify;"><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%;">If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.        </span><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:'Wingdings',sans-serif;font-size:10pt;font-weight:400;line-height:120%;">o</span></div><div style="position:relative;width:100%;height:45pt;"><div style="position:absolute;bottom:0;width:100%;"><div style="text-align:center;"><span><br/></span></div></div></div><div id="icc9ab40a6a7a4e2184ea6b326819cc90_7"></div><hr style="page-break-after:always"/><div style="min-height:42.75pt;width:100%;"><div><span><br/></span></div></div><div><span><br/></span></div><div><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:120%;">Item 5.02 Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.</span></div><div><span><br/></span></div><div><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:115%;">On September 16, 2020, Barry M Granger and Scott M. Prochazka accepted the Board of Directors appointments to serve as Directors effective October 1, 2020. Mr. Granger was appointed as a Class III Director, and Mr. Prochazka was appointed as a Class II Director, both of whom will stand for election by shareholders at the 2021 Annual Meeting of Shareholders.</span><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:'Times New Roman',sans-serif;font-size:12pt;font-weight:400;line-height:115%;"> </span><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:115%;">The Board of Directors also temporarily increased the size of the Board from 10 to 12 directors and expects to reduce the size of the Board to 11 following the anticipated retirement of Mr. Madison in connection with the 2021 Annual Meeting of Shareholders. The Board of Directors has not yet made a determination regarding any committee assignments for Messrs. Granger or Prochazka.</span><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:'Times New Roman',sans-serif;font-size:12pt;font-weight:400;line-height:115%;">  </span><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:115%;">Messrs. Granger and Prochazka will participate in the non-employee director compensation program described in the company&#8217;s proxy statement for the 2020 Annual Meeting of Shareholders.</span></div><div><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:115%;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;</span></div><div><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%;">The press release is attached as Exhibit 99 to this Form 8-K.</span></div><div><span><br/></span></div><div id="icc9ab40a6a7a4e2184ea6b326819cc90_124"></div><div><span><br/></span></div><div style="-sec-extract:summary;"><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:120%;">Item 9.01&#160;Financial Statements and Exhibits.</span></div><div><span><br/></span></div><div style="text-indent:-18pt;padding-left:18pt;"><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%;">(d)&#160;Exhibits</span></div><div><span><br/></span></div><div><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%;">The following exhibits are furnished or filed herewith:</span></div><div style="text-align:center;margin-top:5pt;margin-bottom:5pt;"><table style="border-collapse:collapse;display:inline-table;vertical-align:top;width:99.415%;"><tr><td style="width:1.0%;"></td><td style="width:18.311%;"></td><td style="width:0.1%;"></td><td style="width:1.0%;"></td><td style="width:79.489%;"></td><td style="width:0.1%;"></td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"><span style="font-size:10pt;font-weight:400;font-family:'Times New Roman',sans-serif;color:#000000;background-color:rgb(255,255,255, 0.0);">99</span></td><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"><div><span style="background-color:rgb(255,255,255, 0.0);color:#0000ff;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%;text-decoration: underline;"><a style="background-color:rgb(255,255,255, 0.0);color:#0000ff;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%;text-decoration: underline;-sec-extract:exhibit;" href="ex-99bodpressrelease.htm">Press Release dated September 18, 2020</a></span></div></td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"><span style="font-size:10pt;font-weight:400;font-family:'Times New Roman',sans-serif;color:#000000;background-color:rgb(255,255,255, 0.0);">101.SCH</span></td><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"><span style="font-size:10pt;font-weight:400;font-family:'Times New Roman',sans-serif;color:#000000;background-color:rgb(255,255,255, 0.0);">XBRL Taxonomy Extension Schema Document</span></td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"><span style="font-size:10pt;font-weight:400;font-family:'Times New Roman',sans-serif;color:#000000;background-color:rgb(255,255,255, 0.0);">101.CAL</span></td><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"><span style="font-size:10pt;font-weight:400;font-family:'Times New Roman',sans-serif;color:#000000;background-color:rgb(255,255,255, 0.0);">XBRL Taxonomy Extension Calculation Linkbase Document</span></td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"><span style="font-size:10pt;font-weight:400;font-family:'Times New Roman',sans-serif;color:#000000;background-color:rgb(255,255,255, 0.0);">101.DEF</span></td><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"><span style="font-size:10pt;font-weight:400;font-family:'Times New Roman',sans-serif;color:#000000;background-color:rgb(255,255,255, 0.0);">XBRL Taxonomy Extension Definition Linkbase Document</span></td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"><span style="font-size:10pt;font-weight:400;font-family:'Times New Roman',sans-serif;color:#000000;background-color:rgb(255,255,255, 0.0);">101.LAB</span></td><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"><span style="font-size:10pt;font-weight:400;font-family:'Times New Roman',sans-serif;color:#000000;background-color:rgb(255,255,255, 0.0);">XBRL Taxonomy Extension Label Linkbase Document</span></td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"><span style="font-size:10pt;font-weight:400;font-family:'Times New Roman',sans-serif;color:#000000;background-color:rgb(255,255,255, 0.0);">101.PRE</span></td><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"><span style="font-size:10pt;font-weight:400;font-family:'Times New Roman',sans-serif;color:#000000;background-color:rgb(255,255,255, 0.0);">XBRL Taxonomy Extension Presentation Linkbase Document</span></td></tr><tr><td colspan="3" style="height:9pt;background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"></td><td colspan="3" style="height:9pt;background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"></td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"><span style="font-size:10pt;font-weight:400;font-family:'Times New Roman',sans-serif;color:#000000;background-color:rgb(255,255,255, 0.0);">104</span></td><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"><span style="font-size:10pt;font-weight:400;font-family:'Times New Roman',sans-serif;color:#000000;background-color:rgb(255,255,255, 0.0);">Cover Page Interactive Data File (formatted as inline XBRL and contained in Exhibits 101.*)</span></td></tr></table></div><div><span><br/></span></div><div id="icc9ab40a6a7a4e2184ea6b326819cc90_10"></div><div><span><br/></span></div><div style="text-align:center;"><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%;text-decoration: underline;">SIGNATURES</span></div><div><span><br/></span></div><div><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%;">Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.</span></div><div><span><br/></span></div><div><span><br/></span></div><div style="padding-left:288pt;"><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%;">BLACK HILLS CORPORATION</span></div><div><span><br/></span></div><div><span><br/></span></div><div style="padding-left:288pt;"><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%;text-decoration: underline;">By: /s/ Brian G. Iverson&#160;</span></div><div style="padding-left:288pt;"><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%;">Brian G. Iverson</span></div><div style="padding-left:288pt;"><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%;">Senior Vice President</span></div><div style="padding-left:288pt;"><span><br/></span></div><div><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%;">Date:  September 18, 2020 </span></div><div><span><br/></span></div><div style="position:relative;width:100%;height:42.75pt;"><div style="position:absolute;bottom:0;width:100%;"><div style="text-align:center;"><span><br/></span></div></div></div></body></html>
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bkh-20200916
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
Form
8-K
CURRENT REPORT
PURSUANT TO SECTION 13 OF 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
Date of Report (Date of earliest event reported)
September 16, 2020
Black Hills Corporation
(Exact name of registrant as specified in its charter)
South Dakota
(State or other jurisdiction of incorporation)
001-31303
(Commission File Number)
46-0458824
(IRS Employer Identification No.)
7001 Mount Rushmore Road
Rapid City
,
South Dakota
57702
(Address of principal executive offices)
(
605
)
721-1700
(Registrants telephone number)
Not Applicable
(Former name or former address, if changed since last report)
Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):
☐
Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
☐
Soliciting materials pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
☐
Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
☐
Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)
Securities registered pursuant to Section 12(b) of the Act:
Title of each class
Trading Symbol(s)
Name of each exchange on which registered
Common stock of $1.00 par value
BKH
New York Stock Exchange
Indicate by check mark whether the Registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).
Emerging Growth Company
☐
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.
o
Item 5.02 Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.
On September 16, 2020, Barry M Granger and Scott M. Prochazka accepted the Board of Directors appointments to serve as Directors effective October 1, 2020. Mr. Granger was appointed as a Class III Director, and Mr. Prochazka was appointed as a Class II Director, both of whom will stand for election by shareholders at the 2021 Annual Meeting of Shareholders.
The Board of Directors also temporarily increased the size of the Board from 10 to 12 directors and expects to reduce the size of the Board to 11 following the anticipated retirement of Mr. Madison in connection with the 2021 Annual Meeting of Shareholders. The Board of Directors has not yet made a determination regarding any committee assignments for Messrs. Granger or Prochazka.
Messrs. Granger and Prochazka will participate in the non-employee director compensation program described in the company's proxy statement for the 2020 Annual Meeting of Shareholders.
The press release is attached as Exhibit 99 to this Form 8-K.
Item 9.01 Financial Statements and Exhibits.
(d) Exhibits
The following exhibits are furnished or filed herewith:
99
Press Release dated September 18, 2020
101.SCH
XBRL Taxonomy Extension Schema Document
101.CAL
XBRL Taxonomy Extension Calculation Linkbase Document
101.DEF
XBRL Taxonomy Extension Definition Linkbase Document
101.LAB
XBRL Taxonomy Extension Label Linkbase Document
101.PRE
XBRL Taxonomy Extension Presentation Linkbase Document
104
Cover Page Interactive Data File (formatted as inline XBRL and contained in Exhibits 101.*)
SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.
BLACK HILLS CORPORATION
By: /s/ Brian G. Iverson
Brian G. Iverson
Senior Vice President
Date:  September 18, 2020