| TOP INSTITUTIONAL HOLDERS |
| Holder | Shares | % Out | Value* | Reported | | Visium Asset Management | 160,940 | 2.55 | $5,151,689 | 30-Sep-09 | | Redmile Group, LLC | 147,318 | 2.34 | $4,715,649 | 30-Sep-09 | | RA Capital Management, LLC | 841,603 | 13.36 | $26,939,712 | 30-Sep-09 | | SECTORAL ASSET MANAGEMENT, INC. | 115,708 | 1.84 | $3,703,813 | 30-Sep-09 | | Black Horse Capital Management LLC | 102,592 | 1.63 | $3,283,969 | 30-Sep-09 | | Barclays Global Investors UK Holdings Ltd | 99,050 | 1.57 | $3,170,590 | 30-Sep-09 | | DAFNA Capital Management, LLC | 60,000 | .95 | $1,920,600 | 30-Sep-09 | | FRANKLIN RESOURCES, INC | 55,000 | .87 | $1,760,550 | 30-Sep-09 | | STATE STREET CORPORATION | 52,089 | .83 | $1,667,368 | 30-Sep-09 | | Soundpost Partners, LP | 50,000 | .79 | $1,600,500 | 30-Sep-09 |
|
| Holder | Shares | % Out | Value* | Reported | | ISHARES RUSSELL 2000 INDEX FD | 52,813 | .84 | $1,690,544 | 30-Sep-09 | | FRANKLIN STRATEGIC SERIES-FRANKLIN BIOTECHNOLOGY DISCOVE | 43,600 | .69 | $1,395,636 | 30-Sep-09 | | ISHARES RUSSELL 2000 GROWTH INDEX FD | 27,852 | .44 | $891,542 | 30-Sep-09 | | COLLEGE RETIREMENT EQUITIES FUND-STOCK ACCOUNT | 18,001 | .29 | $428,963 | 30-Jun-09 | | ISHARES Russell Micro Cap (TM) Index Fund | 6,034 | .10 | $193,148 | 30-Sep-09 | | Valic Company I-Small Cap Index Fd | 2,922 | .05 | $75,913 | 31-Aug-09 | | COLLEGE RETIREMENT EQUITIES FUND-EQUITY INDEX ACCOUNT | 2,885 | .05 | $68,749 | 30-Jun-09 | | TIAA-CREF FDS-SMALL-CAP BLEND INDEX FUND | 2,427 | .04 | $57,835 | 30-Jun-09 | | AXA Premier VIP Multimanager Small Cap Growth Portfolio | 2,100 | .03 | $50,043 | 30-Jun-09 | | Nationwide Small Cap Index Fd | 1,800 | .03 | $46,422 | 31-Jul-09 |
|
|
*
|
Value shown is computed using the security's price on the report date given.
|
|