STOCK TITAN

[Form 4] Ultragenyx Pharmaceutical Inc. Insider Trading Activity

Filing Impact
(Moderate)
Filing Sentiment
(Negative)
Form Type
4

Ultragenyx Pharmaceutical (RARE) insider activity: The company’s Chief Financial Officer reported a sale of common stock on 10/13/2025. The filing shows 7,942 shares were sold at $31.51 per share.

According to the explanation, these shares were sold to pay required tax withholdings related to the vesting of restricted stock units (RSUs). Following the transaction, the reporting person beneficially owned 98,227 shares. The ownership is listed as direct.

The filing notes that the remaining amount includes previously reported shares underlying RSUs that are subject to vesting conditions.

Ultragenyx Pharmaceutical (RARE) insider activity: Il direttore finanziario della società ha riportato una vendita di azioni ordinarie in data 13/10/2025. La dichiarazione indica che sono state vendute 7.942 azioni a 31,51 dollari ciascuna.

Secondo la spiegazione, queste azioni sono state vendute per pagare le ritenute fiscali dovute in relazione al vesting delle unità di azioni limitate (RSU). Dopo l'operazione, la persona che riferisce possedeva beneficiamente 98.227 azioni. La proprietà è indicata come diretta.

La dichiarazione osserva che l'importo rimanente include azioni già riportate come correlate a RSU ancora soggette a condizioni di vesting.

Actividad insider de Ultragenyx Pharmaceutical (RARE): El director financiero de la empresa reportó una venta de acciones ordinarias el 13/10/2025. El expediente muestra que se vendieron 7.942 acciones a 31,51 dólares por acción.

Según la explicación, estas acciones se vendieron para cubrir las retenciones fiscales requeridas relacionadas con el vesting de unidades de acciones restringidas (RSU). Tras la operación, la persona que reporta poseía beneficiosamente 98.227 acciones. La titularidad se indica como directa.

El expediente señala que la cantidad restante incluye acciones previamente reportadas subyacentes a RSU que están sujetas a condiciones de vesting.

Ultragenyx Pharmaceutical (RARE) 내부자 거래: 회사의 최고재무책임자(CFO)가 2025년 10월 13일 보통주 매도를 보고했습니다. 공시는 주당 31.51달러에 7,942주가 매도되었다고 밝힙니다.

설명에 따르면 이 주식은 제한 주식단위(RSU)의 베스팅과 관련된 필요한 세금 withholding를 지불하기 위해 매도되었습니다. 거래 후 보고자는 98,227주를 실질적으로 보유하게 되었습니다. 소유권은 직접 소유로 기재되어 있습니다.

공시는 남은 금액이 베스팅 조건이 걸려 있는 RSU의 기초 주식을 포함하고 있음을 주목합니다.

Ultragenyx Pharmaceutical (RARE) activité d'initié : Le directeur financier de l'entreprise a signalé une vente d'actions ordinaires le 13/10/2025. Le dossier indique que 7 942 actions ont été vendues à 31,51 dollars par action.

Selon l'explication, ces actions ont été vendues pour payer les retenues d'impôt requises liées à l'acquisition d'unités d'actions restreintes (RSU). À la suite de la transaction, la personne qui déclare détenait bénéficiellement 98 227 actions. La propriété est indiquée comme directe.

Le dossier indique que le montant restant inclut des actions sous-jacentes aux RSU déjà rapportées et soumises à des conditions de vesting.

Ultragenyx Pharmaceutical (RARE) Insider-Aktivität: Der Chief Financial Officer des Unternehmens meldete am 13.10.2025 einen Verkauf von Stammaktien. Die Einreichung zeigt, dass 7.942 Aktien zu 31,51 USD pro Aktie verkauft wurden.

Laut der Erklärung wurden diese Aktien verkauft, um die erforderlichen Steuerabzüge im Zusammenhang mit dem Vesting von Restricted Stock Units (RSUs) zu begleichen. Nach der Transaktion besaß die meldende Person rechtlich gesehen 98.227 Aktien. Das Eigentum wird als direkt angegeben.

Die Einreichung verweist darauf, dass der verbleibende Betrag zuvor gemeldete Aktien unterliegender RSUs umfasst, die noch vesting-Bedingungen unterliegen.

نشاط داخلي لـ Ultragenyx Pharmaceutical (RARE): أبلغ مدير الشؤون المالية للشركة عن بيع أسهم عادية في 13/10/2025. يظهر الملف أن 7,942 سهماً بيعت بسعر 31.51 دولاراً للسهم.

وفقاً للشرح، بيعت هذه الأسهم لتغطية الاحتجازات الضريبية المطلوبة المرتبطة بوقوع vesting للوحدات الأسهم المقيدة (RSUs). بعد الصفقة، ملك المبلغ المبلغ عنه كان يملك فعلياً 98,227 سهماً. الملكية مدرجة كمباشرة.

تشير الوثيقة إلى أن الرصيد المتبقي يشمل الأسهم التي أُبلغ عنها سابقاً وتخضع لـ RSUs وتحت ظروف vesting.

Ultragenyx Pharmaceutical (RARE) 内部人交易活动: 该公司首席财务官于 2025 年 10 月 13 日报告了一笔普通股卖出交易。备案显示以每股 31.51 美元成交 7,942 股。

根据解释,这些股票的出售是为了支付与限制性股票单位(RSU)归属相关的所需税款预扣。在此次交易后,报备人实际持有 98,227 股。所有权被列为直接。

备案还指出,剩余金额包括先前披露的、仍处于归属条件下的 RSU 底层股票。

Positive
  • None.
Negative
  • None.

Insights

Analyzing...

Ultragenyx Pharmaceutical (RARE) insider activity: Il direttore finanziario della società ha riportato una vendita di azioni ordinarie in data 13/10/2025. La dichiarazione indica che sono state vendute 7.942 azioni a 31,51 dollari ciascuna.

Secondo la spiegazione, queste azioni sono state vendute per pagare le ritenute fiscali dovute in relazione al vesting delle unità di azioni limitate (RSU). Dopo l'operazione, la persona che riferisce possedeva beneficiamente 98.227 azioni. La proprietà è indicata come diretta.

La dichiarazione osserva che l'importo rimanente include azioni già riportate come correlate a RSU ancora soggette a condizioni di vesting.

Actividad insider de Ultragenyx Pharmaceutical (RARE): El director financiero de la empresa reportó una venta de acciones ordinarias el 13/10/2025. El expediente muestra que se vendieron 7.942 acciones a 31,51 dólares por acción.

Según la explicación, estas acciones se vendieron para cubrir las retenciones fiscales requeridas relacionadas con el vesting de unidades de acciones restringidas (RSU). Tras la operación, la persona que reporta poseía beneficiosamente 98.227 acciones. La titularidad se indica como directa.

El expediente señala que la cantidad restante incluye acciones previamente reportadas subyacentes a RSU que están sujetas a condiciones de vesting.

Ultragenyx Pharmaceutical (RARE) 내부자 거래: 회사의 최고재무책임자(CFO)가 2025년 10월 13일 보통주 매도를 보고했습니다. 공시는 주당 31.51달러에 7,942주가 매도되었다고 밝힙니다.

설명에 따르면 이 주식은 제한 주식단위(RSU)의 베스팅과 관련된 필요한 세금 withholding를 지불하기 위해 매도되었습니다. 거래 후 보고자는 98,227주를 실질적으로 보유하게 되었습니다. 소유권은 직접 소유로 기재되어 있습니다.

공시는 남은 금액이 베스팅 조건이 걸려 있는 RSU의 기초 주식을 포함하고 있음을 주목합니다.

Ultragenyx Pharmaceutical (RARE) activité d'initié : Le directeur financier de l'entreprise a signalé une vente d'actions ordinaires le 13/10/2025. Le dossier indique que 7 942 actions ont été vendues à 31,51 dollars par action.

Selon l'explication, ces actions ont été vendues pour payer les retenues d'impôt requises liées à l'acquisition d'unités d'actions restreintes (RSU). À la suite de la transaction, la personne qui déclare détenait bénéficiellement 98 227 actions. La propriété est indiquée comme directe.

Le dossier indique que le montant restant inclut des actions sous-jacentes aux RSU déjà rapportées et soumises à des conditions de vesting.

Ultragenyx Pharmaceutical (RARE) Insider-Aktivität: Der Chief Financial Officer des Unternehmens meldete am 13.10.2025 einen Verkauf von Stammaktien. Die Einreichung zeigt, dass 7.942 Aktien zu 31,51 USD pro Aktie verkauft wurden.

Laut der Erklärung wurden diese Aktien verkauft, um die erforderlichen Steuerabzüge im Zusammenhang mit dem Vesting von Restricted Stock Units (RSUs) zu begleichen. Nach der Transaktion besaß die meldende Person rechtlich gesehen 98.227 Aktien. Das Eigentum wird als direkt angegeben.

Die Einreichung verweist darauf, dass der verbleibende Betrag zuvor gemeldete Aktien unterliegender RSUs umfasst, die noch vesting-Bedingungen unterliegen.

SEC Form 4
FORM 4 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number: 3235-0287
Estimated average burden
hours per response: 0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
1. Name and Address of Reporting Person*
Horn Howard

(Last) (First) (Middle)
C/O ULTRAGENYX PHARMACEUTICAL INC.
60 LEVERONI COURT

(Street)
NOVATO CA 94949

(City) (State) (Zip)
2. Issuer Name and Ticker or Trading Symbol
Ultragenyx Pharmaceutical Inc. [ RARE ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director 10% Owner
X Officer (give title below) Other (specify below)
Chief Financial Officer
3. Date of Earliest Transaction (Month/Day/Year)
10/13/2025
4. If Amendment, Date of Original Filed (Month/Day/Year)
6. Individual or Joint/Group Filing (Check Applicable Line)
X Form filed by One Reporting Person
Form filed by More than One Reporting Person
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V Amount (A) or (D) Price
Common Stock 10/13/2025 S 7,942(1) D $31.51 98,227(2) D
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year) 7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Explanation of Responses:
1. Represents shares sold to pay required tax withholdings due to the vesting of RSUs.
2. Includes previously reported shares of common stock underlying RSUs granted to the Reporting Person, which are subject to certain vesting conditions.
/s/ Karah Parschauer, attorney-in-fact 10/14/2025
** Signature of Reporting Person Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What did Ultragenyx (RARE) disclose in this Form 4?

The CFO reported selling 7,942 shares of common stock on 10/13/2025 at $31.51 per share.

Why were the RARE shares sold by the CFO?

The sale was to pay required tax withholdings due to the vesting of RSUs.

How many Ultragenyx shares does the CFO own after the transaction?

The filing reports 98,227 shares beneficially owned following the transaction.

What is the relationship of the reporting person to Ultragenyx (RARE)?

The reporting person is an officer, serving as Chief Financial Officer.

Is the ownership direct or indirect after the reported sale?

The ownership form is listed as direct.

Do the reported holdings include unvested RSUs?

Yes. The amount includes previously reported shares underlying RSUs subject to vesting conditions.
Ultragenyx Pharm

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Biotechnology
Pharmaceutical Preparations
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United States
NOVATO