Robert P. Otto, Director at BLACK HILLS CORP /SD/ (BKH), sold 4,109 shares at $74.22 ($305K) on 2026-05-27, disclosed to the SEC on 2026-05-28.
Seasonal sale ($305k) by Director — this insider has traded BKH in May in at least three consecutive prior years. Pattern-driven, low signal.
Negative factors outweigh the positive ones.