| Name | Ownership | Shares Owned | sole voting power | shared voting power | Signature | Title | CIK |
|---|---|---|---|---|---|---|---|
| Ameriprise Financial, Inc. | 8.3% | 4,637,795 | 0 | 4,396,889 | /s/ Michael G. Clarke | Michael G. Clarke, Senior Vice President, North America Head of Operations & Investor Services | |
| Columbia Management Investment Advisers, LLC | 8.2% | 4,544,970 | 0 | 4,396,888 | /s/ Michael G. Clarke | Michael G. Clarke, Senior Vice President, North America Head of Operations & Investor Services | |
| Columbia Seligman Technology and Information Fund | 5.4% | 3,008,345 | 3,008,345 | 0 | /s/ Michael G. Clarke | Michael G. Clarke, Senior Vice President & Chief Financial Officer |