Exhibit A
Transactions by Reporting Persons in the last 60 days.
Beneficial Ownership |
| Purchase or |
| Quantity |
| Transaction |
| Price per Share |
| How Effected |
|
|
|
|
|
|
|
|
|
|
|
|
|
Relational Investors Mid-Cap Fund I, L.P. |
| Purchase |
| 17,451 |
| 11/22/2011 |
| 5.62 |
| Open Market |
|
Relational Investors Mid-Cap Fund I, L.P. |
| Purchase |
| 197,484 |
| 11/22/2011 |
| 5.65 |
| Open Market |
|
Relational Investors Mid-Cap Fund II, L.P. |
| Purchase |
| 9,059 |
| 11/22/2011 |
| 5.62 |
| Open Market |
|
Relational Investors Mid-Cap Fund II, L.P. |
| Purchase |
| 102,516 |
| 11/22/2011 |
| 5.65 |
| Open Market |
|
Relational Investors Mid-Cap Fund I, L.P. |
| Purchase |
| 230,398 |
| 11/23/2011 |
| 5.56 |
| Open Market |
|
Relational Investors Mid-Cap Fund I, L.P. |
| Purchase |
| 493,710 |
| 11/23/2011 |
| 5.53 |
| Open Market |
|
Relational Investors Mid-Cap Fund II, L.P. |
| Purchase |
| 119,602 |
| 11/23/2011 |
| 5.56 |
| Open Market |
|
Relational Investors Mid-Cap Fund II, L.P. |
| Purchase |
| 256,290 |
| 11/23/2011 |
| 5.53 |
| Open Market |
|
Relational Investors Mid-Cap Fund I, L.P. |
| Purchase |
| 65,828 |
| 11/25/2011 |
| 5.53 |
| Open Market |
|
Relational Investors Mid-Cap Fund II, L.P. |
| Purchase |
| 34,172 |
| 11/25/2011 |
| 5.53 |
| Open Market |
|
Relational Investors Mid-Cap Fund I, L.P. |
| Purchase |
| 65,828 |
| 11/28/2011 |
| 5.65 |
| Open Market |
|
Relational Investors Mid-Cap Fund I, L.P. |
| Purchase |
| 394,967 |
| 11/28/2011 |
| 5.59 |
| Open Market |
|
Relational Investors Mid-Cap Fund II, L.P. |
| Purchase |
| 34,172 |
| 11/28/2011 |
| 5.65 |
| Open Market |
|
Relational Investors Mid-Cap Fund II, L.P. |
| Purchase |
| 205,033 |
| 11/28/2011 |
| 5.59 |
| Open Market |
|
Relational Investors Mid-Cap Fund I, L.P. |
| Purchase |
| 278,774 |
| 11/29/2011 |
| 5.53 |
| Open Market |
|
Relational Investors Mid-Cap Fund II, L.P. |
| Purchase |
| 144,716 |
| 11/29/2011 |
| 5.53 |
| Open Market |
|
Relational Investors Mid-Cap Fund I, L.P. |
| Purchase |
| 196,425 |
| 1/4/2012 |
| 5.50 |
| Open Market |
|
Relational Investors Mid-Cap Fund I, L.P. |
| Purchase |
| 147,695 |
| 1/4/2012 |
| 5.49 |
| Open Market |
|
Relational Investors Mid-Cap Fund I, L.P. |
| Purchase |
| 235,710 |
| 1/4/2012 |
| 5.50 |
| Open Market |
|
Relational Investors Mid-Cap Fund II, L.P. |
| Purchase |
| 53,575 |
| 1/4/2012 |
| 5.50 |
| Open Market |
|
Relational Investors Mid-Cap Fund II, L.P. |
| Purchase |
| 40,284 |
| 1/4/2012 |
| 5.49 |
| Open Market |
|
Relational Investors Mid-Cap Fund II, L.P. |
| Purchase |
| 64,290 |
| 1/4/2012 |
| 5.50 |
| Open Market |
|
Relational Investors Mid-Cap Fund I, L.P. |
| Purchase |
| 262,745 |
| 1/5/2012 |
| 5.58 |
| Open Market |
|
Relational Investors Mid-Cap Fund I, L.P. |
| Purchase |
| 82,749 |
| 1/5/2012 |
| 5.68 |
| Open Market |
|
Relational Investors Mid-Cap Fund II, L.P. |
| Purchase |
| 71,664 |
| 1/5/2012 |
| 5.58 |
| Open Market |
|
Relational Investors Mid-Cap Fund II, L.P. |
| Purchase |
| 22,569 |
| 1/5/2012 |
| 5.68 |
| Open Market |
|
Relational Investors Mid-Cap Fund I, L.P. |
| Purchase |
| 241,445 |
| 1/6/2012 |
| 5.74 |
| Open Market |
|
Relational Investors Mid-Cap Fund II, L.P. |
| Purchase |
| 65,855 |
| 1/6/2012 |
| 5.74 |
| Open Market |
|
Relational Investors Mid-Cap Fund I, L.P. |
| Purchase |
| 78,570 |
| 1/9/2012 |
| 5.97 |
| Open Market |
|
Relational Investors Mid-Cap Fund I, L.P. |
| Purchase |
| 401,334 |
| 1/9/2012 |
| 5.95 |
| Open Market |
|
Relational Investors Mid-Cap Fund II, L.P. |
| Purchase |
| 21,430 |
| 1/9/2012 |
| 5.97 |
| Open Market |
|
Relational Investors Mid-Cap Fund II, L.P. |
| Purchase |
| 109,466 |
| 1/9/2012 |
| 5.95 |
| Open Market |
|
Relational Investors Mid-Cap Fund I, L.P. |
| Purchase |
| 711,842 |
| 1/10/2012 |
| 6.02 |
| Open Market |
|
Relational Investors Mid-Cap Fund I, L.P. |
| Purchase |
| 235,710 |
| 1/10/2012 |
| 6.01 |
| Open Market |
|
Relational Investors Mid-Cap Fund II, L.P. |
| Purchase |
| 194,158 |
| 1/10/2012 |
| 6.02 |
| Open Market |
|
Relational Investors Mid-Cap Fund II, L.P. |
| Purchase |
| 64,290 |
| 1/10/2012 |
| 6.01 |
| Open Market |
|
Relational Investors Mid-Cap Fund I, L.P. |
| Purchase |
| 109,134 |
| 1/11/2012 |
| 6.00 |
| Open Market |
|
Relational Investors Mid-Cap Fund I, L.P. |
| Purchase |
| 87,213 |
| 1/11/2012 |
| 6.03 |
| Open Market |
|
Relational Investors Mid-Cap Fund II, L.P. |
| Purchase |
| 29,766 |
| 1/11/2012 |
| 6.00 |
| Open Market |
|
Relational Investors Mid-Cap Fund II, L.P. |
| Purchase |
| 23,787 |
| 1/11/2012 |
| 6.03 |
| Open Market |
|
Relational Investors Mid-Cap Fund I, L.P. |
| Purchase |
| 63,013 |
| 1/12/2012 |
| 6.01 |
| Open Market |
|
Relational Investors Mid-Cap Fund II, L.P. |
| Purchase |
| 17,187 |
| 1/12/2012 |
| 6.01 |
| Open Market |
|
Relational Investors Mid-Cap Fund I, L.P. |
| Purchase |
| 78,570 |
| 1/13/2012 |
| 5.97 |
| Open Market |
|
Relational Investors Mid-Cap Fund I, L.P. |
| Purchase |
| 314,278 |
| 1/13/2012 |
| 5.89 |
| Open Market |
|
Relational Investors Mid-Cap Fund I, L.P. |
| Purchase |
| 682,056 |
| 1/13/2012 |
| 5.89 |
| Open Market |
|
Relational Investors Mid-Cap Fund II, L.P. |
| Purchase |
| 21,430 |
| 1/13/2012 |
| 5.97 |
| Open Market |
|
Relational Investors Mid-Cap Fund II, L.P. |
| Purchase |
| 85,722 |
| 1/13/2012 |
| 5.89 |
| Open Market |
|
Relational Investors Mid-Cap Fund II, L.P. |
| Purchase |
| 186,038 |
| 1/13/2012 |
| 5.89 |
| Open Market |
|
