| Insider | Price | Amount | Total Value | Remaining Holdings | Date | Form 4 |
| Director | $47.17 | 833 | $39,292.61 | 45,427 | 2012-02-23 | Filing |
| Director | $47.17 | 2,000 | $94,340.00 | 46,260 | 2012-02-23 | Filing |
| Officer | $46.89 | 12,500 | $586,125.00 | 13,980 | 2012-02-23 | Filing |
| Officer | $42.44 | 2,700 | $114,588.81 | 2,500 | 2011-12-05 | Filing |
| Director | $33.61 | 6,667 | $224,077.87 | 43,760 | 2011-09-29 | Filing |
| Officer | $38.00 | 2,000 | $76,000.00 | 2,596 | 2011-06-16 | Filing |
| Officer, Director | $40.28 | 14,717 | $592,787.51 | 87,507 | 2011-05-27 | Filing |
| Officer, Director | $40.00 | 9,105 | $364,214.57 | 102,224 | 2011-05-26 | Filing |
| Officer, Director | $40.03 | 8,178 | $327,347.35 | 111,329 | 2011-04-06 | Filing |
| Officer, Director | $40.05 | 4,925 | $197,237.88 | 119,507 | 2011-04-05 | Filing |
| Officer, Director | $40.00 | 200 | $8,000.00 | 126,130 | 2011-01-03 | Filing |
| Director | $38.77 | 1,000 | $38,770.00 | 10,000 | 2010-12-23 | Filing |
| Officer | $36.80 | 7,500 | $276,000.00 | 10,270 | 2010-12-10 | Filing |
| Officer | $37.76 | 25,000 | $944,100.00 | 3,526 | 2010-12-08 | Filing |
| Officer | $37.99 | 3,000 | $113,964.30 | 2,596 | 2010-12-08 | Filing |
| Officer, Director | $37.45 | 10,226 | $382,921.77 | 126,330 | 2010-12-01 | Filing |
| Officer, Director | $36.66 | 26,400 | $967,866.24 | 136,556 | 2010-11-30 | Filing |
| Officer, Director | $36.55 | 17,500 | $639,598.75 | 162,956 | 2010-11-29 | Filing |
| Officer, Director | $36.98 | 2,100 | $77,663.67 | 180,456 | 2010-11-26 | Filing |
| Officer | $37.13 | 28,500 | $1,058,176.50 | 11,326 | 2010-11-24 | Filing |