Case Study: Black Hills Corporation achieves 300-hour savings on its 10-K and up to 3-day faster filings with Workiva

Black Hills Saves Hundreds of Hours on 10-K Using Wdesk

Black Hills Corporation, a diversified energy company, faced a fragmented SEC filing process across multiple departments and the looming XBRL mandate, which made preparing and reviewing financial reports time-consuming and error-prone.

Black Hills rolled out Wdesk company-wide in 2010, quickly using it for XBRL-tagged filings and expanding use across development and review teams. The platform automated linked updates, made late-stage changes painless, and improved report quality—saving about 300 hours on the 10-K, shaving 2–3 days off the filing timeline, and enabling four departments to develop reports and 35 to review them.

Black Hills Corporation

Mary Anne Wingert

Senior Manager of Financial Reporting