| Insider | Price | Amount | Total Value | Remaining Holdings | Date | Form 4 |
| Large Shareholder | $47.26 | 103,918 | $4,911,164.68 | 19,067,953 | 2011-09-13 | Filing |
| Large Shareholder | $47.43 | 24,212 | $1,148,375.16 | 19,171,871 | 2011-09-12 | Filing |
| Large Shareholder | $47.26 | 103,918 | $4,911,164.68 | 3,039,884 | 2011-09-13 | Filing |
| Large Shareholder | $47.43 | 24,212 | $1,148,375.16 | 3,141,884 | 2011-09-12 | Filing |
| Large Shareholder | $45.01 | 97,201 | $4,375,017.01 | 19,196,083 | 2011-08-16 | Filing |
| Large Shareholder, Officer, Director | $45.01 | 97,201 | $4,375,017.01 | 2,779,554 | 2011-08-16 | Filing |
| Large Shareholder | $56.57 | 43,100 | $2,438,167.00 | 19,293,284 | 2011-05-18 | Filing |
| Large Shareholder, Officer, Director | $56.57 | 43,100 | $2,438,167.00 | 2,876,755 | 2011-05-18 | Filing |
| Large Shareholder | $57.09 | 40,972 | $2,339,091.48 | 19,336,384 | 2011-05-17 | Filing |
| Large Shareholder | $58.00 | 13,129 | $761,482.00 | 19,377,356 | 2011-05-16 | Filing |
| Large Shareholder, Officer, Director | $57.09 | 40,972 | $2,339,091.48 | 2,919,855 | 2011-05-17 | Filing |
| Large Shareholder, Officer, Director | $58.00 | 13,129 | $761,482.00 | 2,960,827 | 2011-05-16 | Filing |
| Director | $60.39 | 1,000 | $60,385.00 | 4,000 | 2011-05-10 | Filing |
| Director | $60.40 | 1,100 | $66,440.00 | 5,000 | 2011-05-10 | Filing |
| Director | $60.40 | 2,900 | $175,160.29 | 6,100 | 2011-05-10 | Filing |
| Director | $60.38 | 3,300 | $199,237.50 | 9,000 | 2011-05-10 | Filing |
| Director | $60.37 | 1,400 | $84,511.00 | 12,300 | 2011-05-10 | Filing |
| Director | $60.36 | 100 | $6,036.01 | 13,700 | 2011-05-10 | Filing |
| Director | $60.37 | 5,663 | $341,875.31 | 13,800 | 2011-05-10 | Filing |
| Large Shareholder | $57.62 | 96,463 | $5,558,198.06 | 2,772,683 | 2011-05-06 | Filing |