DANBURY, Conn., Feb. 23, 2009 (GLOBE NEWSWIRE) -- Penwest Pharmaceuticals Co. (Nasdaq:PPCO) will conduct a conference call on Wednesday, March 4, at 11:00 a.m. EST to review its financial results for the fourth quarter and year end of 2008, which will be released earlier that day. Operational developments, financial results and financial guidance for 2009 will also be discussed on the call.