Amended Statement of Beneficial Ownership (3/a)

FORM 3	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES	OMB APPROVAL OMB Number: 3235-0104 Estimated average burden hours per response... 0.5
	Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

1. Name and Address of Reporting Person ^*

Aliski William

2. Date of Event Requiring Statement (MM/DD/YYYY) 1/30/2014

3. Issuer Name and Ticker or Trading Symbol

Ultragenyx Pharmaceutical Inc. [RARE]

(Last) (First) (Middle)

C/O ULTRAGENYX PHARMACEUTICAL INC., 60 LEVERONI COURT

4. Relationship of Reporting Person(s) to Issuer (Check all applicable)

__ X __ Director _____ 10% Owner
_____ Officer (give title below) _____ Other (specify below)

(Street)

NOVATO, CA 94949

(City) (State) (Zip)

5. If Amendment, Date Original Filed (MM/DD/YYYY)

1/30/2014

6. Individual or Joint/Group Filing (Check Applicable Line)

_ X _ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1.Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock	36930	I	By trust ⁽¹⁾

*Table II - Derivative Securities Beneficially Owned ( e.g.* , puts, calls, warrants, options, convertible securities)**
1. Title of Derivate Security (Instr. 4)	2. Date Exercisable and Expiration Date (MM/DD/YYYY)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
1. Title of Derivate Security (Instr. 4)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	4. Conversion or Exercise Price of Derivative Security		6. Nature of Indirect Beneficial Ownership (Instr. 5)
Series A Preferred Stock	⁽²⁾	⁽²⁾	Common Stock	266343	$0.00	I	By trust ⁽¹⁾

Explanation of Responses:
(1)	These shares are held in a trust for the benefit of the reporting person's spouse and children. The reporting person's spouse and nephew are trustees of the trust.
(2)	Each share of Series A Convertible Preferred Stock is convertible into Common Stock at any time and automatically converts into Common Stock on a 1-for-3.1345 basis immediately prior to the closing of the Issuer's initial public offering of Common Stock and has no expiration date. The number of underlying shares of Common Stock reported in Column 3 does not reflect this 1-for-3.1345 reverse stock split, pursuant to which each share of Series A Convertible Preferred Stock will become convertible into 0.3190 of a share of Common Stock.

Remarks:
This amendment is filed to report shares held in a trust for the benefit of the reporting person's spouse and children as an indirect holding of the reporting person. No other changes were made to the information reported on the original Form 3 filed on January 30, 2014.

Reporting Owners
Reporting Owner Name / Address	Relationships
Reporting Owner Name / Address	Director	10% Owner	Officer	Other
Aliski William C/O ULTRAGENYX PHARMACEUTICAL INC. 60 LEVERONI COURT NOVATO, CA 94949	X

Signatures
/s/ Ruben A. Garcia, attorney-in-fact		10/9/2018
^** Signature of Reporting Person		Date

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
*	If the form is filed by more than one reporting person, see Instruction 5(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note:	File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number.