PENWEST PHARMACEUTICALS CO (PPCO) [Rocket]

Ownership

PENWEST PHARMACEUTICALS CO (PPCO)

Portfolio as of:

Name	Shares	Change	Value	% Port	% OS	Hist	Date
PERCEPTIVE ADVISORS LLC	6,476,446	0	32,706,052			Hist	08/20/2010
TANG CAPITAL PARTNERS LP	6,695,598	0	31,670,179			Hist	08/09/2010
D. E. Shaw & Co., Inc.	2,431,678	-74,593	8,025,000	0.02	7.64	Hist	06/30/2010
CHILTON INVESTMENT CO INC.	1,500,000	785,000	4,950,000	0.14	4.72	Hist	06/30/2010
FEDERATED HERMES, INC.	1,498,373	0	4,944,630	0.03	4.71	Hist	06/30/2010
GRUBER & MCBAINE CAPITAL MANAGEMENT LLC	1,061,400	0	3,502,620	0.66		Hist	09/30/2010
VANGUARD GROUP INC	854,831	950	2,821,000	0.00	2.69	Hist	06/30/2010
BlackRock Institutional Trust Company, N.A.	827,253	142,382	2,730,000	0.00	2.60	Hist	06/30/2010
DIMENSIONAL FUND ADVISORS LP	671,814	11,172	2,217,000	0.00	2.11	Hist	06/30/2010
FRANKLIN RESOURCES INC	518,000	-645,200	1,709,000	0.00	1.63	Hist	06/30/2010
TFS CAPITAL LLC	217,484	217,484	1,085,000	0.10		Hist	09/30/2010
DEUTSCHE BANK AG\	164,654	-49,534	820,000	0.00		Hist	09/30/2010
Bascom Hill Partners, LLC	240,963	41,695	795,000	0.10	0.76	Hist	06/30/2010
Roark Rearden & Hamot Capital Management LLC	225,000	225,000	742,500	0.61	0.71	Hist	06/30/2010
UBS AG	141,922	102,640	708,190	0.00		Hist	09/30/2010
MHR FUND MANAGEMENT LLC	213,793	0	706,000	0.05	0.67	Hist	06/30/2010
BRIDGEWAY CAPITAL MANAGEMENT, LLC	166,810	39,000	550,000	0.02	0.52	Hist	06/30/2010
BARCLAYS PLC	101,790	14,033	508,000	0.00		Hist	09/30/2010
State of New Jersey Common Pension Fund A	100,000	0	330,000	0.00	0.31	Hist	06/30/2010
WELLS FARGO & COMPANY/MN	62,709	5,000	207,000	0.00	0.20	Hist	06/30/2010
Bank of New York Mellon Corp	52,141	0	172,000	0.00	0.16	Hist	06/30/2010
LSV ASSET MANAGEMENT	46,000	46,000	152,000	0.00	0.14	Hist	06/30/2010
BlackRock Fund Advisors	42,702	-9,910	141,000	0.00	0.13	Hist	06/30/2010
OXFORD ASSET MANAGEMENT LLP	42,533	42,533	140,000	0.01	0.13	Hist	06/30/2010
STATE STREET CORP	35,581	0	118,000	0.00	0.11	Hist	06/30/2010
SUSQUEHANNA INTERNATIONAL GROUP, LLP	20,300	-7,075	101,000	0.00		Hist	09/30/2010
SPARK LP /DE	28,100	8,300	92,000	0.04	0.09	Hist	06/30/2010
MORGAN STANLEY	16,864	-12,205	84,000	0.00		Hist	09/30/2010
GOLDMAN SACHS GROUP INC	20,870	17,070	68,870	0.00	0.07	Hist	06/30/2010
Ancora Advisors, LLC	12,100	-135,426	60,000	0.03		Hist	09/30/2010
WEXFORD CAPITAL LP	12,200	0	40,000	0.00	0.04	Hist	06/30/2010
Ativo Capital Management LLC	11,125	11,125	37,000	0.06	0.03	Hist	06/30/2010
COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS	11,000	11,000	36,000	0.00	0.03	Hist	06/30/2010
US BANCORP \DE\	7,223	0	24,000	0.00	0.02	Hist	06/30/2010
SAN FRANCISCO SENTRY INVESTMENT GROUP	5,000	0	17,000	0.01	0.02	Hist	06/30/2010
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