X0206 3 2019-06-11 0 0001515673 Ultragenyx Pharmaceutical Inc. RARE 0001780113 Harris Erik 60 LEVERONI COURT NOVATO CA 94949 0 1 0 0 EVP & Chief Commercial Officer Common Stock 9861 D Stock Option (Right to Buy) 63.28 2027-07-06 Common Stock 30000 D Stock Option (Right to Buy) 48.43 2028-03-01 Common Stock 3900 D Stock Option (Right to Buy) 67.55 2029-03-01 Common Stock 13000 D Includes 8,552 Restricted Stock Units ("RSUs") awarded under the Company's 2014 Incentive Plan. 6,737 of the RSUs vest with respect to 1/4th of the underlying shares on each anniversary of the grant date, such that the RSUs are fully vested on the fourth anniversary of the grant date. Of the 6,737 RSUs, 2,250 were granted on July 6, 2017, 487 were granted on March 1, 2018, and 4,000 were granted on March 1, 2019. The remaining 1,815 RSUs vest with respect to 1/3rd of the underlying shares on each of April 19, 2020, May 6, 2020, and May 6, 2021. 1/4th of the shares initially subject to the option vested on July 6, 2018; thereafter, 1/48th of the shares initially subject to the option shall vest monthly. 1/4th of the shares initially subject to the option vested on March 1, 2019; thereafter, 1/48th of the shares initially subject to the option shall vest monthly. 1/4th of the shares initially subject to the option shall vest on March 1, 2020; thereafter, 1/48th of the shares initially subject to the option shall vest monthly. Ex. 24 - Power of Attorney /s/ Karah Parschauer, attorney-in-fact 2019-06-21