EMERYVILLE, Calif., April 27 /PRNewswire-FirstCall/ -- Onyx Pharmaceuticals, Inc. (Nasdaq:ONXX - News) today announced that it will host a webcast and teleconference with management to provide a general business overview, as well as to discuss first quarter 2010 financial results, on Tuesday, May 4, 2010, at 5:00 p.m. Eastern Time (2:00 p.m. Pacific Time). Financial results for the first quarter ended March 31, 2010 will be released earlier that day.