 First National Corporation the Company or First National FXNC, the parent company for First Bank, today announced that its board of directors has authorized a stock repurchase plan pursuant to which First National may repurchase up to 5 million of the Companys outstanding common stock. First National intends to purchase shares periodically through privately negotiated transactions or in the open market in accordance with Securities and Exchange Commission rules. The Companys board of directors authorized the purchase plan to run through December 31, 2020, unless the entire amount authorized to be repurchased has been acquired before that date. 