Mr. Hasnain is the Co-Founder, Chairman and Chief Executive Officer of Gossamer Bio. Prior to co-founding Gossamer Bio, Mr. Hasnain served as President, CEO and as a Director of Receptos, Inc. from November 2010 to August 2015. Receptos was a public company formed in 2009 focused on developing treatments in immunology and metabolic disorders and was purchased by Celgene Corporation in August 2015. Previously, Mr. Hasnain was the President and Chief Executive Officer and a director of Facet Biotech Corporation, a biology-driven antibody company with a focus in multiple sclerosis and oncology. He held that position from December 2008 until the company’s acquisition by Abbott Laboratories in April 2010. Previously, Mr. Hasnain was President, Chief Executive Officer and a director of PDL BioPharma, Inc. from October 2008 until Facet Biotech was spun off from PDL BioPharma in December 2008. From October 2004 to September 2008, Mr. Hasnain served at Biogen Idec Inc., a biotechnology company specializing in neurological disorders, autoimmune disorders and cancer, most recently as Executive Vice President in charge of the oncology/rheumatology strategic business unit. Prior to Biogen Idec, Mr. Hasnain held roles with Bristol Myers Squibb, where he was President of the Oncology Therapeutics Network, and for 14 years at GlaxoSmithKline and its predecessor organizations. He has been Chairman of the Board of Sente, Inc. since 2008, Chairman of the Board of Mirati Therapeutics, Inc. since February 2019 and a member of the Board of Overseers of Scripps Research Institute since 2018. He previously served as Chairman of the Board of Ambit Biosciences Corporation and Tocagen Inc. and served as a member of the Board of Directors of Tercica, Inc., Aragon Pharmaceuticals, Somaxon Pharmaceuticals, Inc. and Vital Therapies, Inc. Mr. Hasnain received a B.H.K. and B.Ed. from the University of Windsor Ontario in Canada.