| Insider | Price | Amount | Total Value | Remaining Holdings | Date | Form 4 | 
   | Large Shareholder, Director | $21.01 | 6,800 | $142,895.20 | 689,380 | 2017-07-18 | Filing | 
  | Officer, Director | $43.13 | 21,244 | $916,257.97 | 28,135 | 2017-05-25 | Filing | 
  | Large Shareholder, Director | $33.00 | 12,700 | $419,134.29 | 397,000 | 2016-06-10 | Filing | 
  | Large Shareholder, Director | $34.07 | 87,300 | $2,974,459.41 | 409,700 | 2016-06-09 | Filing | 
  | Large Shareholder, Director | $32.10 | 9,384 | $301,232.03 | 497,000 | 2016-06-08 | Filing | 
  | Large Shareholder, Director | $31.76 | 68,664 | $2,180,919.70 | 6,384 | 2016-06-07 | Filing | 
  | Large Shareholder, Director | $31.36 | 88,826 | $2,785,610.01 | 75,048 | 2016-06-06 | Filing | 
  | Large Shareholder, Director | $30.87 | 47,472 | $1,465,693.25 | 163,874 | 2016-06-03 | Filing | 
  | Large Shareholder, Director | $30.68 | 29,629 | $909,017.72 | 211,346 | 2016-06-02 | Filing | 
  | Large Shareholder, Director | $30.49 | 61,302 | $1,869,042.81 | 240,975 | 2016-06-01 | Filing | 
  | Large Shareholder, Director | $30.19 | 20,326 | $613,704.95 | 302,277 | 2016-05-31 | Filing | 
  | Large Shareholder, Director | $30.19 | 39,063 | $1,179,483.85 | 322,603 | 2016-05-27 | Filing | 
  | Large Shareholder, Director | $30.26 | 9,598 | $290,418.20 | 361,666 | 2016-05-26 | Filing | 
  | Large Shareholder, Director | $30.02 | 21,353 | $641,096.07 | 371,264 | 2016-05-23 | Filing | 
  | Large Shareholder, Director | $30.07 | 18,006 | $541,350.39 | 392,617 | 2016-05-20 | Filing | 
  | Large Shareholder, Director | $30.00 | 100 | $3,000.00 | 410,623 | 2016-05-19 | Filing | 
  | Large Shareholder, Director | $30.58 | 13,041 | $398,754.66 | 410,723 | 2016-05-18 | Filing | 
  | Large Shareholder, Director | $30.96 | 36,699 | $1,136,274.44 | 423,764 | 2016-05-17 | Filing | 
  | Large Shareholder, Director | $30.61 | 32,246 | $987,198.39 | 460,463 | 2016-05-16 | Filing | 
  | Large Shareholder, Director | $30.29 | 14,835 | $449,310.61 | 492,709 | 2016-05-13 | Filing |