X0306 4 2019-02-13 0 0001470205 County Bancorp, Inc. ICBK 0001630321 MILLER MARK ANDREW 860 NORTH RAPIDS ROAD MANITOWOC WI 54220 0 1 0 0 SECRETARY COMMON STOCK 2019-02-13 4 P 0 2789 18.552 A 27354 D COMMON STOCK 19000 I BY SPOUSE The price reported in column 4 is a weighted average price. The shares were purchased in multiple transactions at prices ranging from $17.80 to $18.06, inclusive. The reporting person undertakes to provide to County Bancorp, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote to this Form 4. /s/ Mark A. Miller 2019-02-14