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Ultragenyx (RARE) CMO receives 34,674 RSUs and 59,952 stock options

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
4

Rhea-AI Filing Summary

Ultragenyx Pharmaceutical EVP and Chief Medical Officer Eric Crombez received new equity awards as part of his compensation. He was granted 34,674 shares of Common Stock in the form of Restricted Stock Units (RSUs) under the company’s 2023 Incentive Plan.

The RSUs vest over four years, with one-quarter of the underlying shares vesting on each anniversary of the grant date. Crombez also received a stock option for 59,952 shares of Common Stock at an exercise price of $24.52 per share, expiring on April 16, 2036.

The option vests with one-quarter of the shares on the first anniversary of the grant date and the remainder in equal monthly installments thereafter. Following these awards, Crombez directly holds 110,975 shares of Common Stock, including previously reported RSU-based holdings subject to vesting conditions.

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Insider Crombez Eric
Role EVP and Chief Medical Officer
Type Security Shares Price Value
Grant/Award Stock Option (Right to Buy) 59,952 $0.00 --
Grant/Award Common Stock 34,674 $0.00 --
Holdings After Transaction: Stock Option (Right to Buy) — 59,952 shares (Direct, null); Common Stock — 110,975 shares (Direct, null)
Footnotes (1)
  1. Award of Restricted Stock Units ("RSUs") under the Company's 2023 Incentive Plan. The RSUs shall vest with respect to 1/4th of the underlying shares on each anniversary of the grant date, such that the RSUs are fully vested on the fourth anniversary of the grant date Includes previously reported shares of common stock underlying RSUs granted to the Reporting Person, which are subject to certain vesting conditions. On the first anniversary of the grant date of the option (the "Option Anniversary Date"), 1/4th of the shares initially subject to the option shall vest; thereafter, 1/48th of the shares initially subject to the option shall vest on each month as measured from the Option Anniversary Date.
RSU grant size 34,674 shares Restricted Stock Units granted on April 16, 2026
Stock option grant size 59,952 shares Stock Option (Right to Buy) granted on April 16, 2026
Option exercise price $24.52/share Conversion or exercise price for option grant
Option expiration April 16, 2036 Expiration date of stock option grant
Common shares after grant 110,975 shares Total Common Stock directly held after RSU award
Restricted Stock Units ("RSUs") financial
"Award of Restricted Stock Units ("RSUs") under the Company's 2023 Incentive Plan."
Restricted stock units (RSUs) are a company promise to give an employee shares of stock (or cash equivalent) in the future, but only after certain conditions—usually staying with the company for a set time or hitting performance goals—are met. Investors watch RSUs because when they vest they increase the number of shares outstanding and can lead insiders to sell shares, affecting share price, company dilution and the true cost of employee pay.
2023 Incentive Plan financial
"Award of RSUs under the Company's 2023 Incentive Plan."
Stock Option (Right to Buy) financial
"Security title listed as Stock Option (Right to Buy) for 59,952 shares."
vesting conditions financial
"Shares of common stock underlying RSUs granted are subject to certain vesting conditions."
Vesting conditions are the rules that determine when someone earning company stock or stock options actually gains the right to keep or sell them, typically based on staying with the company for a set time or meeting performance targets. Think of it like keys that unlock gradually — some unlock by calendar date, others only after agreed milestones. Investors care because vesting shapes management incentives, the timing of share sales, and the number of shares that can enter the market, which can affect a company's valuation and ownership mix.
exercise price financial
"Conversion or exercise price for the option is 24.5200 per share."
The exercise price is the fixed amount at which you can buy or sell an asset, like a stock, when using an options contract. It matters because it helps determine whether exercising the option will be profitable or not, depending on the current market price. Think of it as the set price you agree on today to buy or sell later.
SEC Form 4
FORM 4UNITED 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).
Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
Crombez Eric

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

(Street)
NOVATO CALIFORNIA 94949

(City)(State)(Zip)

UNITED STATES

(Country)
2. Issuer Name and Ticker or Trading Symbol
Ultragenyx Pharmaceutical Inc. [ RARE ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director10% Owner
XOfficer (give title below)Other (specify below)
EVP and Chief Medical Officer
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
04/16/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

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)
CodeVAmount(A) or (D)Price
Common Stock04/16/2026A34,674(1)A$0110,975(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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Stock Option (Right to Buy)$24.5204/16/2026A59,952 (3)04/16/2036Common Stock59,952$059,952D
Explanation of Responses:
1. Award of Restricted Stock Units ("RSUs") under the Company's 2023 Incentive Plan. The RSUs shall vest with respect to 1/4th of the underlying shares on each anniversary of the grant date, such that the RSUs are fully vested on the fourth anniversary of the grant date
2. Includes previously reported shares of common stock underlying RSUs granted to the Reporting Person, which are subject to certain vesting conditions.
3. On the first anniversary of the grant date of the option (the "Option Anniversary Date"), 1/4th of the shares initially subject to the option shall vest; thereafter, 1/48th of the shares initially subject to the option shall vest on each month as measured from the Option Anniversary Date.
/s/ Karah Parschauer, attorney-in-fact04/20/2026
** Signature of Reporting PersonDate
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.
* Form 4: SEC 1474 (03-26)

FAQ

What equity awards did Ultragenyx (RARE) executive Eric Crombez receive?

Eric Crombez received 34,674 Restricted Stock Units and a stock option for 59,952 shares of Common Stock. Both awards were granted under Ultragenyx’s 2023 Incentive Plan as compensation, not as open-market purchases, and are subject to multi-year vesting schedules.

How do the new RSUs granted to Ultragenyx (RARE) CMO vest?

The 34,674 RSUs vest in four equal annual installments. One-quarter of the underlying shares vests on each anniversary of the grant date, so the RSUs become fully vested on the fourth anniversary, assuming continued service throughout the vesting period.

What are the key terms of Eric Crombez’s new Ultragenyx (RARE) stock option?

The stock option covers 59,952 shares of Common Stock at an exercise price of $24.52 per share and expires on April 16, 2036. It is a compensation grant, not an open-market transaction, and is subject to a time-based vesting schedule.

How does the Ultragenyx (RARE) stock option granted to Crombez vest over time?

On the first anniversary of the grant date, one-quarter of the option shares vest. After that anniversary, one-forty-eighth of the initially subject shares vests each month, providing gradual monthly vesting following the initial one-year cliff.

How many Ultragenyx (RARE) shares does Eric Crombez hold after these grants?

After the RSU grant, Crombez directly holds 110,975 shares of Common Stock. This figure includes previously reported shares underlying RSUs that remain subject to vesting conditions, plus the newly granted RSUs reflected as common stock holdings.

Were Eric Crombez’s Ultragenyx (RARE) equity awards open-market purchases?

No. Both the 34,674 RSUs and the 59,952-share stock option were granted at a reported price of $0.00 per share. They represent compensation awards under the 2023 Incentive Plan rather than open-market buying of Ultragenyx stock.