Exhibit A
TRANSACTIONS BY REPORTING PERSONS IN LAST 60 DAYS
Beneficial Ownership |
| Purchase or |
| Quantity |
| Transaction |
| Price per Share |
| How Effected |
|
|
|
|
|
|
|
|
|
|
|
|
|
Relational Investors LLC |
| Purchase |
| 17,200 |
| 3/27/2012 |
| 38.50 |
| Open Market |
|
Relational Investors LLC |
| Purchase |
| 25,000 |
| 3/27/2012 |
| 38.58 |
| Open Market |
|
Relational Investors LLC |
| Purchase |
| 64,142 |
| 3/27/2012 |
| 38.53 |
| Open Market |
|
Relational Investors LLC |
| Purchase |
| 50,000 |
| 3/28/2012 |
| 38.55 |
| Open Market |
|
Relational Investors LLC |
| Purchase |
| 53,000 |
| 3/29/2012 |
| 38.60 |
| Open Market |
|
Relational Investors LLC |
| Purchase |
| 84 |
| 4/3/2012 |
| 40.00 |
| Open Market |
|
Relational Investors LLC |
| Purchase |
| 1,881 |
| 4/3/2012 |
| 39.98 |
| Open Market |
|
Relational Investors Mid-Cap Fund I, L.P. |
| Purchase |
| 288 |
| 4/3/2012 |
| 40.00 |
| Open Market |
|
Relational Investors Mid-Cap Fund I, L.P. |
| Purchase |
| 6,391 |
| 4/3/2012 |
| 39.98 |
| Open Market |
|
Relational Investors Mid-Cap Fund II, L.P. |
| Purchase |
| 128 |
| 4/3/2012 |
| 40.00 |
| Open Market |
|
Relational Investors Mid-Cap Fund II, L.P. |
| Purchase |
| 2,851 |
| 4/3/2012 |
| 39.98 |
| Open Market |
|
Relational Investors LLC |
| Purchase |
| 5,700 |
| 5/3/2012 |
| 42.50 |
| Open Market |
|
Relational Investors LLC |
| Purchase |
| 47,050 |
| 5/3/2012 |
| 42.68 |
| Open Market |
|
Relational Investors Mid-Cap Fund I, L.P. |
| Purchase |
| 22,788 |
| 5/4/2012 |
| 42.20 |
| Open Market |
|
Relational Investors LLC |
| Purchase |
| 5,839 |
| 5/4/2012 |
| 42.20 |
| Open Market |
|