DOWNINGTOWN, Pa., Sept. 14, 2016 (GLOBE NEWSWIRE) — DNB Financial Corporation (“DNB”) (NASDAQ:DNBF), the parent company of DNB First, National Association, today announced that it has obtained all required approvals necessary for DNB to consummate its acquisition of East River Bank, Philadelphia, Pennsylvania (“East River”). Approvals included DNB and East River shareholder approvals, and regulatory…