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TANG CAPITAL PARTNERS LP
> PPCO
| Date | Name | Ticker | Shares | Change | Value | Change | Price |
| 08/09/2010 | PENWEST PHARMACEUTICALS CO | PPCO | 6,695,598 | 0 | 31,670,179 | 9,574,705 | $4.73 |
| 06/30/2010 | PENWEST PHARMACEUTICALS CO | PPCO | 6,695,598 | 0 | 22,095,473 | 1,941,723 | $3.30 |
| 06/19/2009 | PENWEST PHARMACEUTICALS CO | PPCO | 6,695,598 | 0 | 20,153,750 | 9,239,925 | $3.01 |
| 03/30/2009 | PENWEST PHARMACEUTICALS CO | PPCO | 6,695,598 | 0 | 10,913,825 | 870,428 | $1.63 |
| 03/12/2009 | PENWEST PHARMACEUTICALS CO | PPCO | 6,695,598 | 890,402 | 10,043,397 | 755,083 | $1.50 |
| 02/17/2009 | PENWEST PHARMACEUTICALS CO | PPCO | 5,805,196 | 665,000 | 9,288,314 | -1,351,892 | $1.60 |
| 01/09/2009 | PENWEST PHARMACEUTICALS CO | PPCO | 5,140,196 | 5,140,196 | 10,640,206 | 10,640,206 | $2.07 |
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