| Nierenberg Investment Management Company, Inc. | 2,631,436 | $16,446,475 | 11.81% |
|---|
| Hudson Executive Capital LP | 12,245,860 | $76,536,625 | 9.04% |
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| JACOB ASSET MANAGEMENT OF NEW YORK LLC | 396,294 | $2,476,838 | 3.49% |
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| Sargent Investment Group, LLC | 1,763,444 | $11,021,525 | 2.66% |
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| Archon Capital Management LLC | 1,236,887 | $7,730,544 | 2.03% |
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| First Washington CORP | 722,545 | $4,515,906 | 1.82% |
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| Mesirow Financial Investment Management, Inc. | 60,144 | $375,900 | 1.64% |
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| PERKINS CAPITAL MANAGEMENT INC | 260,350 | $1,627 | 1.61% |
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| Abrams Capital Management | 7,180,000 | $44,875,000 | 1.48% |
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| Bullseye Asset Management LLC | 334,186 | $2,088 | 1.16% |
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| TOWERVIEW LLC | 225,000 | $1,406,250 | 0.94% |
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| Acuitas Investments, LLC | 187,100 | $1,169,375 | 0.69% |
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| S Squared Technology, LLC | 197,822 | $1,236,388 | 0.67% |
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| FORMULA GROWTH LTD | 261,795 | $1,636,219 | 0.56% |
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| Manatuck Hill Partners, LLC | 160,000 | $1,000,000 | 0.45% |
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| HEARTLAND ADVISORS INC | 900,000 | $5,625,000 | 0.32% |
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| Intrinsic Edge Capital Management LLC | 316,473 | $1,977,956 | 0.22% |
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| GLOBEFLEX CAPITAL L P | 273,134 | $1,707,088 | 0.20% |
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| GREENWOOD CAPITAL ASSOCIATES LLC | 211,008 | $1,318,800 | 0.19% |
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| LEWIS CAPITAL MANAGEMENT, LLC | 16,050 | $100,313 | 0.16% |
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