| TOP INSTITUTIONAL HOLDERS |
| Holder | Shares | % Out | Value* | Reported | | Barclays Global Investors UK Holdings Ltd | 911,103 | 6.59 | $31,341,943 | 30-Sep-09 | | WASATCH ADVISORS INC | 744,646 | 5.38 | $25,615,822 | 30-Sep-09 | | VANGUARD GROUP, INC. (THE) | 545,395 | 3.94 | $18,761,588 | 30-Sep-09 | | ARBOR CAPITAL MANAGEMENT, LLC | 495,500 | 3.58 | $17,045,200 | 30-Sep-09 | | RIVERBRIDGE PARTNERS LLC | 485,361 | 3.51 | $16,696,418 | 30-Sep-09 | | PALISADE CAPITAL MANAGEMENT, L.L.C. | 399,500 | 2.89 | $13,742,800 | 30-Sep-09 | | EMERALD ADVISERS | 348,361 | 2.52 | $11,983,618 | 30-Sep-09 | | DIMENSIONAL FUND ADVISORS LP | 310,242 | 2.24 | $10,672,324 | 30-Sep-09 | | HOOVER INVESTMENT MANAGEMENT CO., LLC | 298,000 | 2.15 | $10,251,200 | 30-Sep-09 | | EPOCH INVESTMENT PARTNERS, INC. | 296,560 | 2.14 | $10,201,664 | 30-Sep-09 |
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| Holder | Shares | % Out | Value* | Reported | | WASATCH SMALL CAP GROWTH FUND | 336,985 | 2.44 | $10,652,095 | 30-Jun-09 | | Manning & Napier Maryland Life Sciences Series Fund | 215,000 | 1.55 | $6,796,150 | 30-Jun-09 | | JANUS VENTURE FUND | 205,893 | 1.49 | $7,082,719 | 30-Sep-09 | | ISHARES RUSSELL 2000 INDEX FD | 173,666 | 1.26 | $5,974,110 | 30-Sep-09 | | ISHARES S&P SMALLCAP 600 INDEX FD | 154,175 | 1.11 | $4,984,477 | 31-Oct-09 | | OPPENHEIMER DISCOVERY FUND | 145,096 | 1.05 | $4,586,484 | 30-Jun-09 | | VANGUARD SMALL-CAP INDEX FUND | 142,744 | 1.03 | $4,512,137 | 30-Jun-09 | | DFA U.S. MICRO CAP SERIES | 134,668 | .97 | $3,456,927 | 30-Apr-09 | | JENNISON SMALL COMPANY FUND | 123,308 | .89 | $4,241,795 | 30-Sep-09 | | WASATCH MICROCAP FUND | 119,936 | .87 | $3,791,176 | 30-Jun-09 |
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Value shown is computed using the security's price on the report date given.
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