Eric Crombez - 21 Apr 2025 Form 4 Insider Report for Ultragenyx Pharmaceutical Inc. (RARE)

Role: EVP and Chief Medical Officer
Signature: /s/ Karah Parschauer, attorney-in-fact
Issuer symbol: RARE
Transactions as of: 21 Apr 2025
Net transactions value: -$28,901
Form type: 4
Filing time: 05 May 2025, 19:18:48 UTC
Previous filing: 04 Mar 2025
Next filing: 15 Aug 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Crombez Eric	EVP and Chief Medical Officer	C/O ULTRAGENYX PHARMACEUTICAL INC., 60 LEVERONI COURT, NOVATO	/s/ Karah Parschauer, attorney-in-fact	05 May 2025	0001653052

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	RARE	Common Stock	Sale	$8,497	-242	-0.34%	$35.11	71,680	21 Apr 2025	Direct	F1
transaction	RARE	Common Stock	Sale	$20,405	-520	-0.72%	$39.24	71,530	05 May 2025	Direct	F1, F2, F3

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Represents shares sold to pay required tax withholdings due to the vesting of RSUs.
F2	Includes 370 shares acquired on April 30, 2025 under the Company's Amended and Restated Employee Stock Purchase Plan
F3	Includes previously reported shares of common stock underlying RSUs granted to the Reporting Person, which are subject to certain vesting conditions.