Dan was founder, President and CEO of Rempex Pharmaceuticals, Inc., an antibiotic company that was sold to the Medicines Company. Previously Dan was President and CEO of Mpex Pharmaceuticals, Inc., a company that advanced an inhaled antibiotic for cystic fibrosis patients into Phase 3 clinical trials; the drug was acquired by Aptalis, Inc. in 2011. Dan has also held senior executive positions at a number of other biotechnology companies. He served as a Director and Chairman of the Audit Committee of Santarus, Inc. for 10 years until its acquisition by Salix, Inc. in 2014 for $2.7 billion. Dan holds the following external Board seats: Nabriva Therapeutics (Chairman, NASDAQ:NBRV), Atox Bio (Chairman), Cidara Therapeutics (NASDAQ: CDTX) and Arbutus Biopharma (NASDAQ: ABUS). He is also Chairman of Biocom, the life science industry association of California that represents more than 800 member companies.