X0306 4 2017-03-07 0 0000713671 DNB FINANCIAL CORP /PA/ DNBF 0001208606 THORNTON JAMES H 43 CEDAR HILL LANE MEDIA PA 19063 1 0 0 1 Chairman of the Board DNBF Common Stock $1 Par Value 2017-03-07 4 M 0 1800 6.93 A 28803 D DNBF Common Stock $1 Par Value 2017-03-07 4 F 0 766 34.35 D 28037 D Employee Stock Option (Right to Buy) 6.93 2017-03-07 4 M 0 1800 0 D 2014-04-23 2017-04-23 DNBF Common Stock $1 Par Value 1800 0 D Sale, assignment, pledge, gift, encumbrance or other alienation or disposition of the shares represented by this certificate may be restricted as provided under applicable federal and state securities laws, and are also restricted and prohibited until March 7, 2019 pursuant to the terms of a Stock Option Award Agreement dated April 23, 2010, between DNB Financial Corporation and the holder of the shares named on this certificate, and the provisions of the DNB Financial Corporation Stock Option Plan. /s/ Gerald F Sopp for James H Thornton 2017-03-08