DLHC ▼ -4.3% - DLH Holdings Corp. $DLHC - DLH Appoints Brooke Pierce President of Health Business Group DLH Holdings appointed Brooke Pierce as president of its Health Business Group, a leadership move that sent shares down 4.3% today. The market's negative reaction to the executive appointment suggests investors may have concerns about the strategic direction or are pricing in expectations tied to the leadership transition. 14-SEP-2026 04:30 PM ET