| Name | Ownership | Shares Owned | sole voting power | shared voting power | Signature | Title | CIK |
|---|---|---|---|---|---|---|---|
| Ameriprise Financial, Inc. | 15.6% | 6,098,453 | 0 | 5,765,736 | /s/ Michael G. Clarke | Michael G. Clarke, Senior Vice President, North America Head of Operations & Investor Services | |
| Columbia Management Investment Advisers, LLC | 14.9% | 5,841,137 | 0 | 5,765,736 | /s/ Michael G. Clarke | Michael G. Clarke, Senior Vice President, North America Head of Operations & Investor Services | |
| Columbia Seligman Technology and Information Fund | 9% | 3,524,175 | 3,524,175 | 0 | /s/ Michael G. Clarke | Michael G. Clarke, Senior Vice President & Chief Financial Officer |