 ACNB Corporation ACNB ACNB, the parent financial holding company of ACNB Bank, a Pennsylvania state-chartered, FDIC insured community bank headquartered in Gettysburg, PA, announced today the receipt of all required regulatory approvals or waivers for ACNBs proposed acquisition of Frederick County Bancorp, Inc. FCBI FCBI and its wholly-owned subsidiary, Frederick County Bank, headquartered in Frederick, MD. 