X0206 3 2023-10-18 0 0001305253 Eiger BioPharmaceuticals, Inc. EIGR 0000884413 KAYNE RICHARD A 1900 AVENUE OF THE STARS, #1000 LOS ANGELES CA 90067 true Common Stock 1667100 I See footnote. Common Stock 2700000 I See footnote. Common Stock 729886 I See footnote. Mr. Kayne shares control of Propel Bio Partners LLC, a Delaware limited liability company ("Propel General Partner"). Mr. Kayne and Propel General Partner act as the general partner of, or otherwise provide discretionary advisory services to, one or more private investment funds, and such investment funds directly own 1,667,100 shares of Common Stock. Mr. Kayne provides discretionary advisory services to an investment company registered under the Investment Company Act of 1940, as amended, and such investment company directly owns 2,700,000 shares of Common Stock. Mr. Kayne is the trustee and beneficiary of the Richard Kayne and Suzanne Kayne Living Trust dtd 01/14/1999, a California trust (the "Family Trust"), and The Family Trust directly owns 729,886 shares of Common Stock. Mr. Kayne expressly disclaims beneficial ownership of the shares of Common Stock reported herein except to the extent of any pecuniary interest. /s/ Richard A. Kayne 2023-10-30