<SEC-DOCUMENT>0001308179-26-000177-index.html : 20260327
<SEC-HEADER>0001308179-26-000177.hdr.sgml : 20260327
<ACCEPTANCE-DATETIME>20260327163120
ACCESSION NUMBER:		0001308179-26-000177
CONFORMED SUBMISSION TYPE:	ARS
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20251231
FILED AS OF DATE:		20260327
DATE AS OF CHANGE:		20260327
EFFECTIVENESS DATE:		20260327

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Ultragenyx Pharmaceutical Inc.
		CENTRAL INDEX KEY:			0001515673
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		ORGANIZATION NAME:           	03 Life Sciences
		EIN:				272546083
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		ARS
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-36276
		FILM NUMBER:		26807903

	BUSINESS ADDRESS:	
		STREET 1:		60 LEVERONI COURT
		CITY:			NOVATO
		STATE:			CA
		ZIP:			94949
		BUSINESS PHONE:		415-483-8800

	MAIL ADDRESS:	
		STREET 1:		60 LEVERONI COURT
		CITY:			NOVATO
		STATE:			CA
		ZIP:			94949
</SEC-HEADER>
<DOCUMENT>
<TYPE>ARS
<SEQUENCE>1
<FILENAME>rare015368-ars.pdf
<DESCRIPTION>ANNUAL REPORT TO SECURITY HOLDERS
<TEXT>
Document 1 - file: rare015368-ars.pdf

</DOCUMENT>
</SEC-DOCUMENT>