 Charles River Laboratories Intl. Inc NYSE:CRL Director George Massaro sold 1,943 shares of the businesss stock in a transaction on Monday, September 14th. The shares were sold at an average price of 219.91, for a total transaction of 427,285.13. Following the sale, the director now directly owns 11,384 shares in the company, valued at 2,503,455.44. ... 