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

Role
Chief Financial Officer
Signature
/s/ Karah Parschauer, attorney-in-fact
Issuer symbol
RARE
Transactions as of
13 Oct 2025
Net transactions value
-$250,252
Form type
4
Filing time
14 Oct 2025, 12:15:06 UTC
Previous filing
10 Mar 2025
Next filing
11 Dec 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 14 Oct 2025 0001786335

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction RARE Common Stock Sale $250,252 -7,942 -7.5% $31.51 98,227 13 Oct 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.