OPEN END INDEX-CERTIFICATE - GILEAD SCIENCES Stock

Gilead Sciences, Inc. specializes in the development, manufacturing and marketing of therapeutic products. Net sales break down by source of income as follows: - sale of drugs (98.9%): for the treatment of HIV (63% of net sales), COVID-19 (20.4%), hepatitis C virus (6.6%), hepatitis B virus (3.6%) and other (6.4%; primarily cytomegalovirus retinitis, and advanced Kaposi sarcoma resulting from HIV); - other (1.1%): especially royalties and revenue from research and development services and from subcontracted production of therapeutic products. Net sales are distributed geographically as follows: the United States (69.2%), Europe (16.4%) and other (14.4%).