Black Hawk Acquisition Corp: BERKLEY W R CORP amends Schedule 13G stake filing

W.R. Berkley Corp. amended its Schedule 13G beneficial ownership filing for Black Hawk Acquisition Corp., disclosing the change to the SEC under accession number 0001628280-26-072383. The filing updates the insurer's reported stake in the blank-check company, though the amended document did not specify a revised share count or percentage in the headline disclosure. Schedule 13G amendments are typically filed when a passive investor's position moves past certain thresholds or materially changes, making the update a signal of shifting institutional interest in the SPAC. Investors will watch for further 13G or 13D filings to confirm whether W.R. Berkley is building, holding or trimming its position ahead of any Black Hawk acquisition or extension vote.