| BlackRock, Inc. | 4,131,139 | $431.7m | 0.0% |
| MAK CAPITAL ONE LLC | 1,192,730 | $124.6m | 17.5% |
| VANGUARD CAPITAL MANAGEMENT LLC | 1,142,492 | $119.4m | 0.0% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 1,117,088 | $116.7m | 0.0% |
| STATE STREET CORP | 1,093,162 | $114.2m | 0.0% |
| WASATCH ADVISORS LP | 937,420 | $98.0m | 0.6% |
| AMERICAN CENTURY COMPANIES INC | 877,928 | $91.7m | 0.0% |
| FMR LLC | 744,802 | $77.8m | 0.0% |
| GEODE CAPITAL MANAGEMENT, LLC | 705,109 | $73.7m | 0.0% |
| Artisan Partners Limited Partnership | 692,735 | $72.4m | 0.1% |
| FRANKLIN RESOURCES INC | 687,962 | $71.9m | 0.0% |
| Nine Ten Capital Management LLC | 655,513 | $68.5m | 21.3% |
| WELLINGTON MANAGEMENT GROUP LLP | 608,050 | $63.5m | 0.0% |
| AltraVue Capital, LLC | 552,557 | $57.7m | 4.2% |
| GENEVA CAPITAL MANAGEMENT LLC | 532,995 | $55.7m | 1.3% |
| JPMORGAN CHASE & CO | 494,132 | $51.2m | 0.0% |
| Conestoga Capital Advisors, LLC | 476,554 | $49.8m | 1.1% |
| PRINCIPAL FINANCIAL GROUP INC | 436,774 | $45.6m | 0.0% |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | 433,604 | $45.3m | 0.1% |
| EMERALD ADVISERS, LLC | 427,845 | $44.7m | 1.1% |
| GOLDMAN SACHS GROUP INC | 414,753 | $43.3m | 0.0% |
| Capital Research Global Investors | 413,984 | $43.3m | 0.0% |
| DIMENSIONAL FUND ADVISORS LP | 408,757 | $42.7m | 0.0% |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. | 373,069 | $39.0m | 0.1% |
| NEXT CENTURY GROWTH INVESTORS LLC | 366,052 | $38.3m | 2.0% |