X0306 4 2016-10-19 false 0001515673 Ultragenyx Pharmaceutical Inc. RARE 0001377202 Sharp Shalini C/O ULTRAGENYX PHARMACEUTICAL INC. 60 LEVERONI COURT NOVATO CA 94949 false true false false CFO & Senior Vice President Common Stock 2016-10-19 4 M false 12000.00 0.815 A 57387.00 D Common Stock 2016-10-19 4 S false 5068.00 60.98 D 52319.00 D Common Stock 2016-10-19 4 S false 6932.00 61.71 D 45387.00 D Stock Option 0.815 2016-10-19 4 M false 12000.00 0.00 D 2022-08-01 Common Stock 12000.00 86663.00 D The sales reported on this Form 4 were effected pursuant to a trading plan adopted by the Reporting Person pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $60.28 to $61.28 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, full information regarding the number of shares sold at each separate price within the range. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $61.29 to $62.14 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, full information regarding the number of shares sold at each separate price within the range. 1/4 of the option vested one year from May 21, 2012 and then 1/48th monthly thereafter. /s/ Shalini Sharp 2016-10-21