Howard Horn - Oct 13, 2025 Form 4 Insider Report for Ultragenyx Pharmaceutical Inc. (RARE)

Role
Chief Financial Officer
Signature
/s/ Karah Parschauer, attorney-in-fact
Stock symbol
RARE
Transactions as of
Oct 13, 2025
Transactions value $
-$250,252
Form type
4
Date filed
10/14/2025, 12:15 PM
Previous filing
Mar 10, 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Horn Howard Chief Financial Officer C/O ULTRAGENYX PHARMACEUTICAL INC., 60 LEVERONI COURT, NOVATO /s/ Karah Parschauer, attorney-in-fact 2025-10-14 0001786335

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction RARE Common Stock Sale -$250K -7.94K -7.48% $31.51 98.2K Oct 13, 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.