 Exponent, Inc. NASDAQ:EXPO Director Paul R. Johnston sold 8,000 shares of the businesss stock in a transaction on Wednesday, June 17th. The stock was sold at an average price of 77.56, for a total value of 620,480.00. Following the transaction, the director now directly owns 71,627 shares of the companys stock, valued at 5,555,390.12. The ... 