Theodore Alan Huizenga - Sep 18, 2025 Form 4 Insider Report for Ultragenyx Pharmaceutical Inc. (RARE)

Role
SVP, Chief Accounting Officer
Signature
/s/ Karah Parschauer, attorney-in-fact
Stock symbol
RARE
Transactions as of
Sep 18, 2025
Transactions value $
-$1,867
Form type
4
Date filed
9/19/2025, 06:23 PM
Previous filing
Sep 8, 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Huizenga Theodore Alan SVP, Chief Accounting Officer C/O ULTRAGENYX PHARMACEUTICAL INC., 60 LEVERONI COURT, NOVATO /s/ Karah Parschauer, attorney-in-fact 2025-09-19 0001603347

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction RARE Common Stock Sale -$1.87K -64 -0.13% $29.17 50.2K Sep 18, 2025 Direct F1, F2
* 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 previously reported shares of common stock underlying RSUs granted to the Reporting Person, which are subject to certain vesting conditions.