X0303 4 2009-11-11 0 0001047188 PENWEST PHARMACEUTICALS CO PPCO 0001229245 GOOD JENNIFER L 39 OLD RIDGEBURY RD SUITE 11 DANBURY CT 06810-5120 1 1 0 0 President & CEO Common Stock 2009-11-11 4 P 0 7500 2.14 A 17369 D Common Stock 15007 I by 401(k) plan Includes 4,002 shares acquired through the Issurer's Employee Stock Purchase Plan. The information in this report is based on broker statements as of October 31, 2009. Consists of 15,007 shares acquired by the reporting person under a 401(k) plan. The information in this repot is based on a 401(k) plan statement dated as of September 30, 2009. /s/ Jennifer L. Good 2009-11-12