X0306 4 2017-12-21 0000203596 WESBANCO INC WSBC 0001393088 NELSON F ERIC JR C/O WESBANCO INC ONE BANK PLAZA WHEELING WV 26003 1 Common Stock 2017-12-21 4 S 0 12500 42.059 D 26233 I By Frederik Eric Nelson Trusts Common Stock 29717 D Common Stock 335 I By Children Common Stock 0 I By O & G, Inc. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $41.96 to $42.1854 inclusive. The reporting person undertakes to provide to WesBanco, Inc., any security holder of WesBanco, Inc. or the staff of the Securities 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/ Robert H. Young, Attorney-in-Fact 2017-12-21