| TOP INSTITUTIONAL HOLDERS |
| Holder | Shares | % Out | Value* | Reported | | MAVERICK CAPITAL LTD. | 1,366,816 | 9.30 | $9,936,752 | 30-Sep-09 | | WELLINGTON MANAGEMENT COMPANY, LLP | 510,390 | 3.47 | $3,710,535 | 30-Sep-09 | | WASATCH ADVISORS INC | 337,995 | 2.30 | $2,457,223 | 30-Sep-09 | | TPG Capital, L.P. | 275,290 | 1.87 | $2,001,358 | 30-Sep-09 | | Barclays Global Investors UK Holdings Ltd | 234,519 | 1.60 | $1,704,953 | 30-Sep-09 | | Bank of New York Mellon Corporation | 206,158 | 1.40 | $1,498,768 | 30-Sep-09 | | PERKINS CAPITAL MANAGEMENT, INC. | 188,600 | 1.28 | $1,371,122 | 30-Sep-09 | | LORD ABBETT & CO | 186,900 | 1.27 | $1,358,763 | 30-Sep-09 | | PERSEUS, L.L.C. | 148,780 | 1.01 | $1,081,630 | 30-Sep-09 | | SOROS FUND MANAGEMENT LLC | 148,780 | 1.01 | $1,081,630 | 30-Sep-09 |
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| Holder | Shares | % Out | Value* | Reported | | ISHARES RUSSELL 2000 INDEX FD | 131,654 | .90 | $957,124 | 30-Sep-09 | | WASATCH MICROCAP FUND | 91,360 | .62 | $704,385 | 30-Jun-09 | | ISHARES RUSSELL 2000 GROWTH INDEX FD | 69,251 | .47 | $503,454 | 30-Sep-09 | | LORD ABBETT SECURITIES TRUST-MICRO-CAP GROWTH FUND | 62,100 | .42 | $623,484 | 31-Jul-09 | | COLLEGE RETIREMENT EQUITIES FUND-STOCK ACCOUNT | 42,886 | .29 | $330,651 | 30-Jun-09 | | Managers Trust I-Managers Fremont Micro-Cap Fund | 34,300 | .23 | $344,372 | 31-Jul-09 | | PROFESSIONALLY MANAGED PORTF-PERKINS DISCOVERY FUND | 30,000 | .20 | $218,100 | 30-Sep-09 | | VANGUARD EXTENDED MARKET INDEX FUND | 16,332 | .11 | $125,919 | 30-Jun-09 | | ISHARES Russell Micro Cap (TM) Index Fund | 13,759 | .09 | $100,027 | 30-Sep-09 | | Valic Company I-Small Cap Index Fd | 7,281 | .05 | $61,306 | 31-Aug-09 |
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*
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Value shown is computed using the security's price on the report date given.
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