S&T Bancorp, Inc. and DNB Financial Corporation Announce Merger PR Newswire INDIANA, Pa., June 5, 2019 INDIANA , Pa., June 5, 2019 /PRNewswire/ -- S&T Bancorp, Inc. (S&T) (NASDAQ: STBA), the holding company for S&T Bank, with operations in five markets including Western Pennsylvania , Central Pennsylvania , Northeast Ohio , Central Ohio , and Upstate New York, and DNB Financial Corporation (DNB)(NASDAQ:DNBF), the holding company for DNB First, a community bank headquartered in Downingtown,...