Form 4 Filing for Black Hills Corp.

This filing details a Form 4 for Black Hills Corp. (BKH), reporting transactions by Scott M. Prochazka, a director. On May 1, 2026, Prochazka acquired 1921 shares of Common Stock under a Non-employee Director Restricted Stock Unit Grant, with the transaction price noted as per footnote F1. Following this acquisition, Prochazka owns 11715.8442 shares of Common Stock directly. Additionally, the filing reports a derivative transaction involving 2335.0121 shares of Common Stock underlying Phantom Stock Units, held indirectly by trust. These derivative securities are convertible at a 1:1 ratio and are exercisable/expirable upon retirement, as indicated by footnotes F2, F3, and F4.