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Ultragenyx Pharmaceutical Inc. (RARE)

Ultragenyx Pharmaceutical Inc. (RARE) Insider Trading

Directors, officers and holders of more than 10% of RARE report their trades in its stock on SEC Form 4, within two business days. Each row below is one Form 4 transaction line. The one-letter code says what kind of transaction it was: only P (purchase) and S (sale) are open-market or private trades; awards, option exercises, tax withholding and gifts carry other codes.

Recent Form 4 transactions

The 50 most recent of 134 transactions on file: 0 with code P, 19 with code S and 31 with other codes.

DateInsiderCodeShares
Oct 15, 2026Horn HowardS Sale7,066
Sep 15, 2026Huizenga Theodore AlanS Sale1,283
Sep 3, 2026Huizenga Theodore AlanS Sale161
Aug 3, 2026Parschauer Karah HerdmanS Sale1,900
Aug 3, 2026Horn HowardS Sale4,696
Jul 1, 2026Horn HowardS Sale4,698
Jun 15, 2026Sanders Corazon (Corsee) D.S Sale2,000
Jun 15, 2026Parschauer Karah HerdmanS Sale1,899
Jun 1, 2026Horn HowardS Sale4,653
May 18, 2026SULIMAN SHEHNAAZS Sale5,740
May 14, 2026Fust Matthew KA Award14,058
May 14, 2026SULIMAN SHEHNAAZA Award7,751
May 14, 2026Ray AmritA Award14,058
May 14, 2026Sanders Corazon (Corsee) D.A Award7,751
May 14, 2026WELCH DANIEL GA Award7,751
May 14, 2026WELCH DANIEL GA Award14,058
May 14, 2026Ray AmritA Award7,751
May 14, 2026SULIMAN SHEHNAAZA Award14,058
May 14, 2026Sanders Corazon (Corsee) D.A Award14,058
May 14, 2026Dunsire DeborahA Award7,751
May 14, 2026Dunsire DeborahA Award14,058
May 14, 2026NARACHI MICHAELA Award14,058
May 14, 2026Fust Matthew KA Award7,751
May 14, 2026NARACHI MICHAELA Award7,751
May 5, 2026Crombez EricS Sale344
May 1, 2026Horn HowardS Sale4,683
Apr 22, 2026Huizenga Theodore AlanA Award20,241
Apr 22, 2026Huizenga Theodore AlanA Award7,348
Apr 16, 2026Crombez EricA Award59,952
Apr 16, 2026Horn HowardA Award59,952
Apr 16, 2026Horn HowardA Award34,674
Apr 16, 2026Crombez EricA Award34,674
Apr 16, 2026Harris ErikA Award49,960
Apr 16, 2026Parschauer Karah HerdmanA Award28,895
Apr 16, 2026Pinion John RichardA Award23,116
Apr 16, 2026Huang Dennis KarlA Award23,116
Apr 16, 2026KAKKIS EMIL DA Award76,745
Apr 16, 2026Pinion John RichardA Award79,936
Apr 16, 2026Harris ErikA Award28,895
Apr 16, 2026KAKKIS EMIL DA Award132,693
Apr 16, 2026Huang Dennis KarlA Award79,936
Apr 16, 2026Parschauer Karah HerdmanA Award49,960
Apr 1, 2026Horn HowardS Sale4,683
Mar 10, 2026Parschauer Karah HerdmanS Sale3,508
Mar 6, 2026Parschauer Karah HerdmanS Sale6,018
Mar 3, 2026Horn HowardS Sale1,635
Mar 2, 2026Huizenga Theodore AlanF Tax Payment148
Mar 2, 2026Parschauer Karah HerdmanS Sale8,135
Mar 2, 2026KAKKIS EMIL DS Sale54,404
Mar 2, 2026Harris ErikS Sale10,539

The full Form 4 history is on the RARE company page (Insider Trades card, View all).

Questions about this data

Which insider transactions are open-market trades?

Code P (open market or private purchase) and code S (open market or private sale). Code F is shares withheld to pay tax on vesting stock, A is an award from the company, M and X are option exercises and G is a gift. None of those is the insider choosing to buy or sell in the market.

How quickly are insider trades reported?

A Form 4 is due before the end of the second business day after the trade. The date shown is the transaction date from the form.

Who has to file Form 4?

Officers, directors and beneficial owners of more than 10% of a class of the company’s registered equity, under Section 16 of the Securities Exchange Act.

Look up any code in the Form 4 transaction code reference, or read Form 4 codes explained.