Certain Common Stocks of Black Hills Corporation are subject to a Lock-Up Agreement Ending on 16-JAN-2016. These Common Stocks will be under lockup for 60 days starting from 17-NOV-2015 to 16-JAN-2016.

Details:
The executive officers and directors have entered into a lock up agreement pursuant to which, they will not offer, pledge, announce the intention to sell, sell, contract to sell, sell any option or contract to purchase, purchase any option or contract to sell, grant any option, right or warrant to purchase or otherwise dispose of, directly or indirectly, or file with the SEC a registration statement for any shares of common stock or securities convertible into or exchangeable for any shares of the common stock, for a period of 60 days from the date of the prospectus, without the prior written consent of Credit Suisse Securities (USA) LLC, Merrill Lynch, Pierce, Fenner & Smith Incorporated, and Wells Fargo Securities, LLC.