Trade Summary

Yesterday, Otto Robert P, serving as Dir at BLACK HILLS CORP /SD/ (BKH), sold 4,109 shares at $74.22 per share, for a total transaction value of $304,969.57. Following this transaction, Otto Robert P now holds 10,886 shares of BKH.

This sale represents a 27.40% decrease in Otto Robert P's stake in the company. This is considered a high-conviction trade given the significant change in ownership.

The trade was executed on Wednesday, May 27, 2026 and publicly disclosed via SEC Form 4 filing on Thursday, May 28, 2026 at 12:44 PM ET, 1 day after the trade was made.

BLACK HILLS CORP /SD/ operates in the UTILITIES sector, specifically within the UTILITIES - REGULATED GAS industry. Insider selling activity in this sector can provide valuable signals about industry trends and company-specific developments.