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Company profile

Ultragenyx Pharmaceutical Inc. Insider Trading

RARE

Every SEC Form 4 insider trading filing for Ultragenyx Pharmaceutical Inc. (RARE) since April 2023: open-market buys and sells by directors and officers, option exercises, and cluster activity, updated as each filing is reported to the SEC. Why 2023?

Exchange
Nasdaq
Sector
Pharmaceutical Preparations
CIK
0001515673
Filings
120
Insiders
16
Last filing
2026-09-15
SEC EDGAR ↗Yahoo Finance ↗Finviz ↗Stock Analysis ↗

Activity summary

Recent insider activity is bearish. Over the last 30 days, insiders net sold $2K across 1 transaction.

Three year balance

Buy and sell value by quarter, Q4 23 to Q3 26. Ultragenyx Pharmaceutical Inc. insiders were net sellers in every quarter shown.

PurchasesSales
Q4 23Q1 24Q2 24Q3 24Q4 24$6.9MQ1 25Q2 25Q3 25Q4 25Q1 26Q2 26Q3 26

Bars below the rule are sales, above are purchases. Largest quarter on the chart is $6.9M.

90 day insight

Over the last 90 days, Ultragenyx Pharmaceutical Inc. insiders sold $2K across 1 transaction with no open-market purchases.

  • Most active insider: Howard Horn with 2 transactions totaling $273K.
  • Largest single sale: $156K by Howard Horn on Jul 1, 2026.
  • 80% of recent sales were pre-scheduled 10b5-1 trades, typically less informative than open-market activity.

Activity skews bearish: sales outpace buys.

Insider Transactions

Sourced from SEC EDGAR Form 4 filings. Updated hourly.

DateInsiderCompanyTypeSharesPriceValueReturn
Sep 15, 2026Theodore Alan HuizengaRARE
Sale10b5
1,283$13.57$17K-1.6% 1d
Sep 3, 2026Theodore Alan HuizengaRARE
Sale
161$13.99$2K-12.3% 1w
Aug 3, 2026Howard HornRARE
Sale10b5
4,696$24.92$117K+2.8% 1m
Aug 3, 2026Karah Herdman ParschauerRARE
Sale10b5
1,900$24.92$47K+2.8% 1m
Jul 1, 2026Howard HornRARE
Sale10b5
4,698$33.13$156K-23.4% 1m

45 more transactions hidden

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Top insiders

By open-market value traded.

Howard HornChief Financial Officer8 filings−$826K
Karah Herdman ParschauerEVP and Chief Legal Officer4 filings−$302K
Erik HarrisEVP & Chief Commercial Officer1 filing−$240K
Eric CrombezEVP and Chief Medical Officer2 filings−$169K
Shehnaaz Suliman1 filing−$144K

Institutional Ownership

Top 13F-HR holders of Ultragenyx Pharmaceutical Inc. as of 2026-06-30

↓ decreasing
Total reported AUM
$784.8M
QoQ change
-58.1%
Reporting period
2026-06-30
#1
State Street Corp
CIK 0000093751
$205.6M
6.2M shares
#2
BlackRock, Inc.
CIK 0002012383
$148.1M
4.4M shares
#3
BlackRock, Inc.
CIK 0002012383
$125.1M
3.7M shares

Data source: quarterly 13F-HR filings: institutional holders report positions within 45 days of quarter end. Joined with insider activity above: see who's loading up institutionally while insiders are trading. Full 13F-HR API →

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Form4API, StockholmNot affiliated with the SEC or EDGAR. Data sourced from public EDGAR filings. Not investment advice.

Congressional Trading

Disclosed RARE trades under the STOCK Act

Total trades
4
Purchases
4
Sales
0
Gilbert Ray Cisneros, Jr.
Democrat · House · CA
4 buys
0 sells

Sourced from U.S. House Clerk periodic transaction reports (House coverage only). Trade counts reflect disclosed filings only. The STOCK Act allows up to 45 days between a trade and its disclosure, so this reflects recent disclosures, not real-time trading. Full congressional trading API →

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