PENWEST PHARMACEUTICALS CO

PENWEST PHARMACEUTICALS CO.

S-1

AMENDED AND RESTATED ARTICLES OF INCORPORATION

EX-3.1

AMENDED AND RESTATED BYLAWS OF THE COMPANY

EX-3.2

PRODUCT DEVELOPMENT AND SUPPLY AGREEMENT

EX-10.1

PRODUCT DEVELOPMENT AND SUPPLY AGREEMENT

EX-10.2

PRODUCT DEVELOPMENT AND SUPPLY AGREEMENT

EX-10.3

SALES AND DISTRIBUTION AGREEMENT

EX-10.4

PRODUCT DEVELOPMENT AND SUPPLY AGREEMENT

EX-10.5

PRODUCT DEVELOPMENT AND SUPPLY AGREEMENT

EX-10.6

PRODUCT DEVELOPMENT, LICENSE AND SUPPLY AGREEMENT

EX-10.7

AGREEMENT DATED MAY 26, 1995

EX-10.8

AGREEMENT DATED JULY 27, 1992

EX-10.9

STRATEGIC ALLIANCE AGREEMENT

EX-10.10

1997 EQUITY INCENTIVE PLAN

EX-10.11

1997 EMPLOYEE STOCK PURCHASE PLAN

EX-10.12

SUBSIDIARIES OF THE REGISTRANT

EX-21.1

CONSENT OF ERNST & YOUNG LLP

EX-23.1

FINANCIAL DATA SCHEDULE

EX-27.1