Type	Name	Date
Underwriting agreement	UNDERWRITING AGREEMENT	03/07/2023
Underwriting agreement	UNDERWRITING AGREEMENT	02/27/2020
Credit agreement	Third Amended and Restated Credit Agreement, among Black Hills Corporation, as Borrower, the financial institutions party thereto, as Banks, and U.S. Bank, National Association, as Administrative Agent	07/31/2018
Credit agreement	Amended and Restated Credit Agreement, among Black Hills Corporation, as Borrower, the financial institutions party thereto, as Banks, and JPMorgan Chase Bank, N.A., as Administrative Agent	07/31/2018
Credit agreement	Second Amended and Restated Senior Credit Agreement among Black Hills Corporation, as Borrower, the financial institutions party thereto, as Banks, and U.S. Bank, National Association, as Administrative Agent	08/10/2016
Credit agreement	Credit Agreement among Black Hills Corporation, as Borrower, the financial institutions party thereto, as Banks, and JPMorgan Chase Bank, N.A., as Administrative Agent	08/10/2016
Credit agreement	Third Amended and Restated Term Loan Credit Agreement among Black Hills Corporation, as Borrower, the financial institutions party thereto, as Banks, and JPMorgan Chase Bank, N.A., as Administrative Agent	08/10/2016
Credit agreement	Second Amended and Restated Term Loan Credit Agreement among Black Hills Corporation, the financial institutions party thereto as Banks, JPMorgan Chase Bank, N.A., as Administrative Agent and Wells Fargo Bank, National Association, as Syndication Agent	03/18/2016
Credit agreement	Amendment No. 3 to Credit Agreement by and among Black Hills Corporation, the financial institutions listed on the signatures pages thereto and U.S. Bank National Association, as Administrative Agent (relating to Credit Agreement dated May 29, 2014)	03/18/2016
Credit agreement	Amendment No. 2 to Credit Agreement by and among Black Hills Corporation, the financial institutions listed on the signature pages thereto and JPMorgan Chase Bank, N.A., as Administrative Agent (relating to Credit Agreement dated April 13, 2015)	03/18/2016
Indenture	Indenture between Source Gas LLC and U.S. Bank National Association, as Trustee (relating to $325 million 5.90% Senior Notes due 2017)	03/18/2016
Indenture	First Supplemental Indenture between Black Hills Corporation and U.S. Bank National Association, as trustee	11/23/2015
Credit agreement	First Amendment to Credit Agreement among Black Hills Corporation, as Borrower, JPMorgan Chase Bank, N.A., in its capacity as administrative agent for the Banks under the Credit Agreement, and as a Bank, and the other Banks party thereto	08/12/2015
Credit agreement	Second Amendment to Amended and Restated Credit Agreement among Black Hills Corporation, as Borrower, U.S. Bank, National Association, in its capacity as administrative agent for the Banks under the Credit Agreement, and as a Bank, and the other Banks party thereto	08/12/2015
Credit agreement	First Amendment to Amended and Restated Credit Agreement among Black Hills Corporation, as Borrower, U.S. Bank, National Association, in its capacity as administrative agent for the Banks under the Credit Agreement, and as a Bank, and the other Banks party thereto	06/29/2015
Credit agreement	Credit Agreement among Black Hills Corporation, as Borrower, JPMorgan Chase Bank, N. A., in its capacity as administrative agent for the Banks under the Credit Agreement, and as a Bank, and the other Banks party thereto	04/14/2015
Indenture	First Supplemental Indenture, between Cheyenne Light, Fuel and Power Company and Wells Fargo Bank, National Association	10/02/2014
Indenture	Second Supplemental Indenture, between Cheyenne Light, Fuel and Power Company and Wells Fargo Bank, National Association	10/02/2014
Credit agreement	Credit Agreement among Black Hills Corporation, as Borrower, U.S. Bank, National Association, in its capacity as administrative agent for the Banks under the Credit Agreement, and as a Bank, and the other Banks party thereto	05/30/2014
Credit agreement	Credit Agreement among Black Hills Corporation, as Borrower, JPMorgan Chase Bank, N. A., in its capacity as administrative agent for the Banks under the Credit Agreement, and as a Bank, and the other Banks party thereto	06/24/2013
Credit agreement	First Amendment to the Credit Agreement among Black Hills Corporation, as Borrower, The Bank of Nova Scotia, in its capacity as agent for the Banks and as a Bank, and each of the other Banks	06/26/2012
Credit agreement	Credit Agreement among Black Hills Corporation, as Borrower, U.S. Bank, National Association, in its capacity as administrative agent for the Banks under the Credit Agreement, and as a Bank, and the other Banks party thereto	02/03/2012
Credit agreement	First Amendment to the Credit Agreement among Black Hills Corporation, as Borrower, JPMorgan Chase Bank, N.A., in its capacity as agent for the Banks and as a Bank, and each of the other Banks	10/03/2011
Credit agreement	Credit Agreement among Black Hills Corporation, as Borrower, the financial institutions party thereto, as Banks, JPMorgan Chase Bank, N.A., as Administrative Agent, and JPMorgan Securities LLC and Union Bank of California, N.A., as Co-Lead Arrangers and Joint Book Runners	12/16/2010
Underwriting agreement	Underwriting Agreement	11/17/2010
Credit agreement	Credit Agreement among Black Hills Corporation, as Borrower, The Royal Bank of Scotland Plc., in its capacity as administrative agent for the Banks under the Credit Agreement, and as a Bank, and the other Banks party thereto	04/21/2010
Credit agreement	Credit Agreement, among Black Hills Corporation, as borrower, ABN AMRO Bank N.V., as administrative agent, sole bookrunner and co-arranger, BMO Capital Markets, as syndication agent and co-arranger, Credit Suisse Securities (USA) LLC, as syndication agent and co-arranger, Union Bank of California, N.A., as syndication agent and co-arranger, and the Financial Institutions party thereto, as Banks	10/20/2009

Type	Name	Date
By-Laws	Amended and Restated Bylaws of Black Hills Corporation	02/03/2010