Sierra Metals Inc. (TSE:SMT – Get Free Report) Director J. Alberto Arias sold 28,389 shares of the firm’s stock in a transaction dated Friday, April 19th. The stock was sold at an average price of C$0.60, for a total transaction of C$17,127.08. J. Alberto Arias also recently made the following trade(s): On Friday, April 12th, […]