| B. Riley Financial, Inc. | 3,609,763 | $43,533,742 | 14.67% |
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| Mill Road Capital Management LLC | 1,910,979 | $23,046,407 | 12.13% |
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| Voss Capital, LLC | 2,701,500 | $32,580,090 | 4.10% |
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| Millrace Asset Group, Inc. | 136,735 | $1,649 | 2.04% |
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| Mesirow Financial Investment Management, Inc. | 25,361 | $305,854 | 1.33% |
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| Register Financial Advisors LLC | 141,162 | $1,702,414 | 1.25% |
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| Manatuck Hill Partners, LLC | 200,000 | $2,412,000 | 1.09% |
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| PUNCH & ASSOCIATES INVESTMENT MANAGEMENT, INC. | 820,277 | $9,892,535 | 0.63% |
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| First Dallas Securities Inc. | 164,900 | $1,989 | 0.46% |
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| Granahan Investment Management | 925,159 | $11,157,418 | 0.40% |
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| Quantum Private Wealth, LLC | 63,750 | $768,825 | 0.37% |
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| Rock Creek Group, LP | 230,000 | $2,773,800 | 0.36% |
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| ESSEX INVESTMENT MANAGEMENT CO LLC | 177,337 | $2,138,684 | 0.35% |
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| Spouting Rock Asset Management, LLC | 86,053 | $1,037,799 | 0.33% |
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| Nantahala Capital Management | 322,632 | $3,890,942 | 0.33% |
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| Hodges Capital Management Inc. | 229,286 | $2,765 | 0.33% |
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| Portolan Capital Management | 189,478 | $2,285,105 | 0.21% |
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| CONTRARIAN CAPITAL MANAGEMENT, L.L.C. | 48,500 | $584,910 | 0.16% |
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| Foundry Partners, LLC | 204,910 | $2,471,215 | 0.15% |
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| OBERWEIS ASSET MANAGEMENT INC/ | 110,100 | $1,327,806 | 0.14% |
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