The ExOne Co. has named a new chief financial officer to replace John Irvin, its CFO since October 2012 who helped lead the 2013 initial public offering.<br /><br />The 3-D printing company said Irvin will be replaced by Brian W. Smith on Jan. 1 as CFO and treasurer. Smith, a partner at PricewaterhouseCoopers' office in Pittsburgh, will report to Chairman and CEO S. Kent Rockwell. Irvin will become special adviser to the chairman of ExOne (Nasdaq: XONE).<br /><br />"John has been a key member of our leadership team. In addition to his financial leadership, he has been instrumental in a number of key operating initiatives, including the establishment of our production service centers and expansion of our global facilities, critical components in our strategy," Rockwell said in a prepared statement. "We look forward to continuing to benefit from his broad business experience in his new role as we advance our global growth strategy."<br /><br />Smith has been an assurance client service partner in the PwC Pittsburgh office and a partner since 1995. He joined the company in 1984.