 ACNB Corporation ACNB announced today that Frank Rusty Elsner, III, Chairman of the Boards of ACNB Corporation and ACNB Bank, informed the Boards of Directors of ACNB Corporation and ACNB Bank that he will be retiring as Chairman of the Board of both the Corporation and the Bank effective February 15, 2020. Mr. Elsner, however, will continue to serve as a Class 3 Director of the Corporation, Director of the Bank, and Vice Chairman of the Board of Directors of Russell Insurance Group, Inc., the insurance subsidiary of the Corporation. 