Keith Leonard brings to the Board more than 25 years of operational and leadership experience in the pharmaceutical industry, with proven expertise in R&D and commercialization. With a successful track record in leading transformational financial transactions and creating significant shareholder value, he has spearheaded innovation efforts at both emerging and well-established biotechnology companies. His experience leading strategic planning and business development and expansion efforts provide key perspectives to the Board. Mr. Leonard has extensive experience in drug discovery, development, and commercialization. During his tenure at KYTHERA Biopharmaceuticals, he oversaw the development, approval, and launch of KYBELLA, positioning the company for a $2.1 billion acquisition by Allergan. With previous executive roles in leading biopharmaceutical companies, Mr. Leonard brings expertise in global and strategic growth initiatives. As SVP and General Manager at Amgen Europe, he was responsible for overseeing the company s commercial operations across 28 countries, achieving significant commercial growth in Europe and establishing the company as a market leader in anemia treatment. Mr. Leonard has operational experience across multiple business areas, including sales and marketing, engineering, operations, IT, and finance. During his 13-year career at Amgen, he led the creation and establishment of their rheumatology business. As CEO of Unity Biotechnology, he oversaw the company s day-to-day operations, expanding it from an early-stage drug development company. Director Since: 2016 Age: 64 Committees Audit Other Public Company Directorships Arcutis Biotherapeutics, Inc. (Nasdaq: ARQT) (since 2021) Unity Biotechnology, Inc. (2016 - 2025) Sienna Biopharmaceuticals (2016-2019) Anacor Pharmaceuticals (acquired by Pfizer in 2016) (2014-2016) Career Highlights Unity Biotechnology a public biotechnology company Chairman and CEO (2016-2020) KYTHERA Biopharmaceuticals a public biopharmaceutical company (acquired by Allergan in 2015) Co-Founder, President and CEO (2005-2015) Amgen (Nasdaq: AMGN) a biotechnology company SVP and General Manager, Amgen Europe (2001-2004) VP, Rheumatology Business Unit (1999-2001) Managing Director, European Logistics Center (1996-1998) Head of Information Management, various leadership positions in sales, marketing, engineering, operations and finance (1991-1996) Civil Engineer Corps (CEC), US Navy the engineering division of the Navy Lieutenant (1984-1991) Education B.S., Engineering, University of California, Los Angeles B.A., History, University of Maryland M.S., Mechanical Engineering, University of California, Berkeley M.B.A., Anderson School of Management, University of California, Los Angeles