Transaction · 0000950170-25-032764

Huizenga Theodore Alan

Huizenga Theodore Alan, SVP, CAO, reported a transaction classified as withholding at Ultragenyx Pharmaceutical Inc. involving 141.000000 shares for an estimated $6051.72. Reported holdings after the transaction were 50124.000000 shares. A 10b5-1 reference was not detected in the stored filing text.

withholdingSEC transaction code FSVP, CAO
RAREUltragenyx Pharmaceutical Inc.
Filing timeMar 05
Trade dateMar 03, 2025
Filing · SECView on SEC
InsiderProfile

Price performance since filing

Close on the filing date, the pre-filing context, and the forward return at standard windows
Price at filing
Pre-filing
1mo ago1w ago1d ago
Returns since
7d30d90d180d1y

RARE price since this filing

30 days of pre-filing context and vertical markers at the filing date plus 7d / 30d / 90d / 180d / 1y afterwards
RARE since 2025-03-05Filed 553 days ago · 30 days of pre-filing context shaded
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Filing datePost-filing windows (7d, 30d, 90d, 180d, 1y)30 days of pre-filing context

Transaction facts

Stored Form 4 columns with their raw values

Non-derivative
Type
withholding
Code F
Identifier
0000950170-25-032764
Common Stock
Transaction date
Mar 03, 2025
Filed Mar 05, 2025, 01:00 AM · 2d delay
Shares
141 sh
$4.29k per share
Estimated value
-$605k
Computed from shares × price
Holdings after
50.1k sh
Direct

Filing signal explanations

Badges describe filing facts only — not predictions.

Cluster 14dRepeat 30dPattern $10.0MLarge $100M
Direct Ownership
-12score
Filing-only score

-12

Compact filing score computed from stored Form 4 facts. Version v1.

Mixed or weak signal

This filing has a negative filing-only score. It may be less informative as an insider-activity signal and needs extra context.

Reported relationships & other filings

Form 4 relationship flags and nearby filing context

Reported roles

SVP, Chief Accounting Officer

Officer YesDirector No10% NoOther No
Footnotes & amended
  1. F1

    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 th…

  2. F2

    Represents shares sold to pay required tax withholdings due to the vesting of RSUs.

  3. F3

    The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $41.77 to $42.90 inclusive. The Reporting Person undertakes to provid…

  4. F4

    Represents shares surrendered to the Issuer by the Reporting Person to pay required tax withholdings due to the vesting of RSUs.

  5. F5

    Includes previously reported shares of common stock underlying RSUs granted to the Reporting Person, which are subject to certain vesting conditions.

  6. F6

    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 sub…

Original filing · 0000950170-25-032764
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