X0306 4 2019-11-30 1 0000713671 DNB FINANCIAL CORP /PA/ DNBF 0001732803 Barsz Peter Richard 1023 BENT ROAD MEDIA PA 19063 1 0 0 0 DNBF Common Stock $1 Par Value 2019-11-30 4 D 0 3338 D 0 D Disposed of pursuant to the Agreement and Plan of Merger (the "Merger Agreement") by and between Issuer and S&T Bancorp, Inc. ("S&T"). Pursuant to the terms of the Merger Agreement, at the effective time of the Merger, each award of restricted shares of Issuer common stock vested in full, all restrictions thereon lapsed, and each such award was converted into the right to receive 1.22 shares of common stock, par value $2.50 per share, of S&T having a market value of $37.72 per share on the effective time of the Merger. The reporting person's status as an insider terminated 11/30/2019 and therefore is no longer subject to Section 16. /s/ Gerald F Sopp for Peter R Barsz 2019-12-03