Exhibit 99.1

INFORMATION REGARDING THE DIRECTOR AND EXECUTIVE OFFICERS OF LIGAND PHARMACEUTICALS INCORPORATED AND METABASIS THERAPEUTICS, INC.

The names and the principal occupations of the current directors and executive officers of Ligand Pharmaceuticals Incorporated (“Ligand”) are set forth below. The business address of each of the individuals named below is 3911 Sorrento Valley Boulevard, Suite 110, San Diego, CA 92121.

During the last five years, none of the individuals has been convicted in any criminal proceeding (excluding traffic violations and similar misdemeanors) or has been a party to any civil proceeding of a judicial or administrative body as a result of which such person was or is subject to a judgment, decree or final order enjoining future violations of, or prohibiting or mandating activities subject to, federal or state securities laws or finding violations with respect to such laws. In addition, other

 

    

Position with

Ligand

  

Principal

Occupation

  

Shares of

Viking

Therapeutics,

Inc.

beneficially

owned

  

Description of

any contract,
arrangement,

understanding
or relationship with
respect

to any

securities of

Viking
Therapeutics,

Inc.

  

Citizenship

John Kozarich, Ph.D.

   Chairman & CEO    Interim Chief Executive Officer of Curza Global, LLC    0    Not applicable    USA

Jason Aryeh

   Director    Managing General Partner of JALAA Equities, LP    0    Not applicable    USA

Sarah Boyce

   Director    President and Chief Executive Officer of Avidity Biosciences, Inc.    0    Not applicable    USA

Todd Davis

   Director    Founder and Managing Partner of RoyaltyRx Capital    0    Not applicable    USA

Nancy Gray, Ph.D

   Director    President and CEO of Gordon Research Conferences    0    Not applicable    USA


John Higgins

   Director    Chief Executive Officer and Director at Ligand Pharmaceuticals Incorporated    0    Not applicable    USA

John LaMattina, Ph.D

   Director    Director at Ligand Pharmaceuticals Incorporated    0    Not applicable    USA

Sunil Patel

   Director    Director at Ligand Pharmaceuticals Incorporated    0    Not applicable    USA

Stephen L. Sabba

   Director    Director at Ligand Pharmaceuticals Incorporated    0    Not applicable    USA

Matthew Foehr

   President & COO    President and Chief Operating Officer at Ligand Pharmaceuticals Incorporated    137,036    Director of the Viking    USA

Matthew Korenberg

   Executive Vice President, Finance and Chief Financial Officer   

Executive Vice President, Finance and Chief Financial Officer

at Ligand Pharmaceuticals Incorporated

   0    Not applicable    USA

Charles Berkman, JD

   Senior Vice President, General Counsel and Secretary    Senior Vice President, General Counsel and Secretary at Ligand Pharmaceuticals Incorporated    0    Not applicable    USA