Rosa Pharmaceuticals, Inc, Becomes Rosa & Co LLC

Cupertino, California

December 28, 2007

Rosa Pharmaceuticals, Inc, today announced that it had completed its planned corporate change to Rosa & Co LLC.

“As one of the world’s modeling-and-simulation leaders focused on the pharmaceutical industry, the company’s transformation into Rosa & Co reflects our renewed emphasis on providing exceptional consulting services.” said Sam Holtzman, PhD, Chairman, President, and CEO of Rosa & Co.

About Rosa & Co.

Rosa & Co. is a consulting company that helps clients systematically and dramatically improve development productivity through a combination of advanced predictive methods and proven organizational processes, including: Drug-Disease Modeling and Clinical Trial Simulation; Pharmaceutical Asset, Franchise, and Portfolio Strategy; and Dynamic Market Modeling. Rosa’s leadership has played a seminal role in establishing each of these areas’ intellectual foundations, and they have demonstrated their business value during many years of professional experience. Rosa’s clients develop drugs, diagnostics, and medical devices, and range in size from pre-IPO start-ups to global pharmaceutical companies. The company’s locations in Silicon Valley, San Diego, Seattle, Philadelphia, and London allow Rosa to serve clients worldwide.

Statements in this announcement that are not strictly historical are “forward looking” statements as defined in the Private Securities Litigation Reform Act of 1995. Actual events may differ materially from those projected in forward looking statements due to uncertainties in the company's operations, development efforts, and business environment.