HP Inc. /zigman2/quotes/203461582/composite HPQ -6.52% said Thursday Xerox Corp. /zigman2/quotes/201169674/composite XRX -8.55% slate of board candidates is a "self-serving" tactic from billionaire investor Carl Icahn to push an acquisition that "significantly undervalues" the company. "We believe that Xerox's proposal and nominations are being driven by Carl Icahn, and his large ownership position in Xerox means that his interests are not aligned with those of other HP shareholders," HP said in a statement. "Due to Mr. Icahn's ownership position, he would disproportionately benefit from an acquisition of HP by Xerox at a price that undervalues HP." Icahn owns significant stakes in both HP and Xerox. Earlier Thursday, Xerox proposed a slate of 11 board members to replace HP's board. A proxy battle has been brewing ever since Xerox offered $33 billion for HP, which the company rebuffed.