X0306 4 2015-05-04 0 0001607678 Viking Therapeutics, Inc. VKTX 0001614595 Hanley Rochelle C/O VIKING THERAPEUTICS, INC. 11119 NORTH TORREY PINES ROAD, SUITE 50 SAN DIEGO CA 92037 0 1 0 0 Chief Medical Officer Common Stock, par value $0.00001 per share 2015-05-04 4 D 0 158453 D 91547 D Common Stock, par value $0.00001 per share 2015-05-04 4 A 0 70000 0.00 A 161547 D Common Stock, par value $0.00001 per share 2015-05-04 4 F 0 7308 9.49 A 168855 D Stock Option (Right to Buy) 9.49 2015-05-04 4 A 0 30000 0.00 A 2015-05-04 2025-05-04 Common Stock 30000 30000 D Of the shares repurchased by the Issuer, 79,226 shares were fully vested and 79,227 were subject to vesting. Shares were repurchased by the Issuer at a price of $0.00001 per share. Includes 45,773 shares of restricted stock that are subject to vesting, of which 22,887 will vest on April 15, 2016 and 22,887 will vest on April 15, 2017. Represents a restricted stock award of common stock under the Issuer's 2014 Equity Incentive Plan. One third of the shares subject to the restricted stock award shall vest on each one year anniversary of the grant date of the award. Represents a restricted stock award of 13,974 shares of common stock granted under the Issuer's 2014 Equity Incentive Plan. All of the shares subject to the restricted stock award vested immediately upon grant. In order to satisfy certain tax withholding obligations, the Issuer repurchased 6,666 of these shares from the Reporting Person. 25% of the shares subject to the option were vested upon grant and 25% of the shares subject to the option will vest on each one year anniversary of the grant date. /s/ Michael Morneau, as Attorney-in-Fact 2015-05-06