Matt Signore will be leaving the company at the end of the year, according to an internal memo sent by WMN chairman/CEO John Esposito today (June 30) that was obtained by Billboard.Signore has spent 15 years at the Warner Music Group in different capacities, and had been COO at Warner Nashville since January 2017. He first joined the major from Island Def Jam in 2005, as chief financial officer of Warner’s artist and label services division WEA.