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CIK 0001515673 · Large accelerated filer

Ultragenyx Pharmaceutical Inc.

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Ticker
RARE
Exchange
Nasdaq
Industry
Pharmaceutical Preparations
FY end
Dec 31
Incorporated
DE
Entity type
operating
EIN
272546083
Phone
415-483-8800
Business address
60 LEVERONI COURT, NOVATO, CA, 94949
Open-market buys, last 90 days
$0
in 0 filings
Open-market sales, last 90 days
$127,561
in 3 filings, $17K under 10b5-1 plans

Net −$127,561. Shares bought or sold at a price by officers, directors and 10% owners (Form 4 codes P and S). Grants, option exercises and tax withholding aren't counted.

Pace of trading Bought Sold

Who's trading

90 days

  1. Horn Howard −$108K Chief Financial Officer sold 7% of stake
  2. Huizenga Theodore Alan −$20K SVP, Chief Accounting Officer sold 2% of stake

Reading 100 more Form 4s from the SEC; this list fills in as they're read.

Date Insider Transaction Shares Price Value Owned after
2026-05-14 WELCH DANIEL G Director Grant or award +7,751 40,441
2026-05-14 WELCH DANIEL G Director Grant or award · Stock Option (Right to Buy) +14,058 14,058
2026-05-14 Dunsire Deborah Director Grant or award +7,751 38,566
2026-05-14 Dunsire Deborah Director Grant or award · Stock Option (Right to Buy) +14,058 14,058
2026-05-05 Crombez Eric EVP and Chief Medical Officer Sale −344 $24.96 $9K 111,189
2026-05-01 Horn Howard Chief Financial Officer Sale 10b5-1 −4,683 $24.90 $117K 110,342
2026-04-22 Huizenga Theodore Alan SVP, Chief Accounting Officer Grant or award +20,241 68,911
2026-04-22 Huizenga Theodore Alan SVP, Chief Accounting Officer Grant or award · Stock Option (Right to Buy) +7,348 7,348
2026-04-16 KAKKIS EMIL D President & CEO Grant or award +76,745 735,739
2026-04-16 KAKKIS EMIL D President & CEO Grant or award · Stock Option (Right to Buy) +132,693 132,693
2026-04-16 Huang Dennis Karl See Remarks Grant or award +23,116 147,845
2026-04-16 Huang Dennis Karl See Remarks Grant or award · Stock Option (Right to Buy) +79,936 79,936
2026-04-16 Pinion John Richard See Remarks Grant or award +23,116 133,142
2026-04-16 Pinion John Richard See Remarks Grant or award · Stock Option (Right to Buy) +79,936 79,936
2026-04-16 Parschauer Karah Herdman EVP and Chief Legal Officer Grant or award +28,895 95,715
2026-04-16 Parschauer Karah Herdman EVP and Chief Legal Officer Grant or award · Stock Option (Right to Buy) +49,960 49,960
2026-04-16 Harris Erik EVP & Chief Commercial Officer Grant or award +28,895 118,410
2026-04-16 Harris Erik EVP & Chief Commercial Officer Grant or award · Stock Option (Right to Buy) +49,960 49,960
2026-04-16 Crombez Eric EVP and Chief Medical Officer Grant or award +34,674 110,975
2026-04-16 Crombez Eric EVP and Chief Medical Officer Grant or award · Stock Option (Right to Buy) +59,952 59,952

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