X0306 4 2020-08-25 0 0001607678 Viking Therapeutics, Inc. VKTX 0000886163 LIGAND PHARMACEUTICALS INC 3911 SORRENTO VALLEY BOULEVARD, SUITE 110 SAN DIEGO CA 92121 0 0 1 0 Common Stock 2020-08-25 4 S 0 70000 8.0225 D 5968083 D Common Stock 2020-08-26 4 S 0 94488 8.108 D 5819383 D Includes 882,474 shares of Common Stock held by Metabasis Therapeutics, Inc., a wholly owned subsidiary of the Reporting Person. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $8.0948 to $8.20, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, additional information regarding the number of shares sold at each separate price within the range set forth in this footnote. /s/ Charles S. Berkman 2020-08-27