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Ultragenyx Pharmaceutical Inc.

RARE
Exchange
Nasdaq
Industry
Pharmaceutical Preparations
SEC CIK
0001515673

In the last 90 days, Ultragenyx Pharmaceutical Inc. insiders filed 0 open-market purchases and 5 sales; 311 institutions reported holding it in 13F filings for Q2 2026, worth $3.55B in total; no superinvestor holds it.

Open-market trades, last 90 days

Open-market purchases (P) and sales (S) by Ultragenyx Pharmaceutical Inc. insiders, counted by Form 4 filing. Trades with a flagged price and duplicate filings are left out.

Open-market buys
0 filings
Open-market sells
5 filings
3 insiders, $339.7K in total
Insiders trading
3
Net value
−$339.7K
Purchases minus sales

Insider roster

Directors, officers and 10% owners who have filed a Form 4 for Ultragenyx Pharmaceutical Inc., current and former, most recent filer first. Last reported holding is the position after the last non-derivative trade in their latest filing.

Insider roster for Ultragenyx Pharmaceutical Inc.
NameTitleLast reported holdingLast filingFilings, past year
Huizenga Theodore AlanSVP, Chief Accounting Officer67,863Sep 15, 20265
Parschauer Karah HerdmanEVP and Chief Legal Officer92,562Aug 4, 20265
Horn HowardChief Financial Officer96,295Aug 4, 202611
Sanders Corazon (Corsee) D.Director21,095Jun 15, 20262
Welch Daniel GDirector40,441May 18, 20261
Dunsire DeborahDirector38,566May 18, 20261
Narachi MichaelDirector40,441May 18, 20261
Fust Matthew KDirector33,696May 18, 20261
Suliman ShehnaazDirector27,951May 18, 20261
Ray AmritDirector31,116May 18, 20261
Crombez EricEVP and Chief Medical Officer111,189May 6, 20263
Kakkis Emil DPresident & CEO735,739Apr 20, 20262
Huang Dennis KarlSee Remarks147,845Apr 20, 20262
Pinion John RichardSee Remarks133,142Apr 20, 20262
Harris ErikEVP & Chief Commercial Officer118,410Apr 20, 20262
Kassberg Thomas RichardCBO & EVP264,730Mar 4, 20250
Bedrosian Camille LEVP and Chief Medical Officer46,720Mar 3, 20230
Dier MardiCFO & Executive Vice President66,695Oct 17, 20220
Ekman LarsDirector17,745Jun 28, 20220

Insider trades

Each row adds up one type of transaction in one Form 4 filing. Only open-market purchases (P) and sales (S) are shown by default; use the filters to see grants, option exercises and other codes.

Insider trades
Filed (ET)Trade dateFiling delayInsiderTransactionSharesAvg priceValueHolding changeFlags
Jul 8, 2021 (view filing)Jul 62 daysHarris ErikEVP & Chief Commercial OfficerSSale−375$91.53−$34.3K−1.5%25.3K after
Sep 2, 2021 (view filing)Sep 1-21 dayBedrosian Camille LEVP and Chief Medical OfficerSSale−5.00K$100.11−$500.5K−11.4%38.8K after2 lots
Sep 9, 2021 (view filing)Sep 81 dayParschauer Karah HerdmanEVP and General CounselSSale−7.34K$100.65−$738.4K−20.4%28.7K after
Oct 14, 2021 (view filing)Oct 12-142 daysDier MardiCFO & Executive Vice PresidentSSale−6.74K$82.00−$552.5K−14.8%38.8K after2 lots
Oct 18, 2021 (view filing)Oct 144 daysPinion John RichardSee RemarksSSale−358$81.14−$29.0K−0.7%49.8K after
Oct 18, 2021 (view filing)Oct 144 daysParschauer Karah HerdmanEVP and General CounselSSale−310$81.14−$25.2K−1.1%28.4K after
Oct 18, 2021 (view filing)Oct 144 daysKassberg Thomas RichardCBO & EVPSSale−286$81.14−$23.2K−0.1%216.3K after
Oct 18, 2021 (view filing)Oct 144 daysHuizenga Theodore AlanSVP, Chief Accounting OfficerSSale−140$81.14−$11.4K−1.0%14.1K after
Oct 18, 2021 (view filing)Oct 144 daysHuang Dennis KarlEVP & Chief Tech Ops OfficerSSale−358$81.14−$29.0K−0.9%40.1K after
Oct 18, 2021 (view filing)Oct 144 daysHarris ErikEVP & Chief Commercial OfficerSSale−303$81.14−$24.6K−1.2%25.0K after
Oct 18, 2021 (view filing)Oct 144 daysBedrosian Camille LEVP and Chief Medical OfficerSSale−359$81.14−$29.1K−0.9%38.4K after
Feb 1, 2022 (view filing)Jan 302 daysBedrosian Camille LEVP and Chief Medical OfficerSSale−1.66K$66.30−$109.9K−4.3%36.8K after
Mar 3, 2022 (view filing)Mar 12 daysBedrosian Camille LEVP and Chief Medical OfficerSSale−2.82K$66.62−$187.9K−7.7%33.9K after
Mar 3, 2022 (view filing)Mar 12 daysKassberg Thomas RichardCBO & EVPSSale−2.37K$66.62−$158.2K−1.1%213.8K after
Mar 3, 2022 (view filing)Mar 12 daysParschauer Karah HerdmanEVP and Chief Legal OfficerSSale−2.89K$66.62−$192.3K−10.2%25.5K after
Mar 3, 2022 (view filing)Mar 12 daysHuang Dennis KarlSee RemarksSSale−3.23K$66.62−$215.4K−8.1%36.9K after
Mar 3, 2022 (view filing)Mar 12 daysHuizenga Theodore AlanSVP, Chief Accounting OfficerSSale−843$66.62−$56.2K−6.0%13.2K after
Mar 3, 2022 (view filing)Mar 12 daysPinion John RichardSee RemarksSSale−4.50K$66.62−$299.7K−9.0%45.3K after
Mar 3, 2022 (view filing)Mar 12 daysHarris ErikEVP & Chief Commercial OfficerSSale−2.71K$66.62−$180.7K−10.8%22.3K after
Mar 3, 2022 (view filing)Mar 1-32 daysDier MardiCFO & Executive Vice PresidentSSale−954$65.71−$62.7K−1.8%51.8K after2 lots
Mar 8, 2022 (view filing)Mar 71 dayParschauer Karah HerdmanEVP and Chief Legal OfficerSSale−5.14K$62.95−$323.6K−13.0%34.4K after
Mar 15, 2022 (view filing)Mar 114 daysKassberg Thomas RichardCBO & EVPSSale−10.3K$67.01−$688.9K−4.3%227.6K after
Apr 19, 2022 (view filing)Apr 163 daysHuizenga Theodore AlanSVP, Chief Accounting OfficerSSale−132$84.55−$11.2K−0.8%16.9K after
Jun 22, 2022 (view filing)Jun 193 daysHarris ErikEVP & Chief Commercial OfficerSSale−295$54.78−$16.2K−0.8%36.2K after
Oct 14, 2022 (view filing)Oct 122 daysDier MardiCFO & Executive Vice PresidentSSale−3.48K$38.22−$133.2K−4.9%68.3K after
Oct 17, 2022 (view filing)Oct 143 daysDier MardiCFO & Executive Vice PresidentSSale−1.63K$40.16−$65.4K−2.4%66.7K after
Dec 22, 2022 (view filing)Dec 211 dayHuizenga Theodore AlanSVP, Chief Accounting OfficerSSale−2.03K$43.96−$89.3K−11.1%16.2K after
Jan 3, 2023 (view filing)Dec 30, 20224 daysKakkis Emil DPresident & CEOSSale−19.6K$45.57−$892.4K−3.5%541.1K after
Mar 2, 2023 (view filing)Feb 282 daysHuizenga Theodore AlanSVP, Chief Accounting OfficerSSale−639$43.40−$27.7K−3.9%15.6K after
Mar 3, 2023 (view filing)Mar 12 daysHarris ErikEVP & Chief Commercial OfficerSSale−3.66K$45.25−$165.8K−6.0%57.3K after
Mar 3, 2023 (view filing)Mar 12 daysPinion John RichardSee RemarksSSale−3.75K$45.26−$170.0K−4.5%80.2K after
Mar 3, 2023 (view filing)Mar 12 daysHuang Dennis KarlSee RemarksSSale−389$45.65−$17.8K−0.5%75.3K after
Mar 3, 2023 (view filing)Mar 12 daysHuizenga Theodore AlanSVP, Chief Accounting OfficerSSale−100$45.65−$4.57K−0.4%23.0K after
Mar 3, 2023 (view filing)Mar 12 daysKassberg Thomas RichardCBO & EVPSSale−1.97K$45.27−$89.1K−0.8%250.3K after
Mar 3, 2023 (view filing)Mar 12 daysParschauer Karah HerdmanEVP and Chief Legal OfficerSSale−3.16K$45.25−$143.0K−5.3%56.1K after
Mar 3, 2023 (view filing)Mar 12 daysBedrosian Camille LEVP and Chief Medical OfficerSSale−3.88K$45.25−$175.6K−7.7%46.7K after
May 5, 2023 (view filing)May 41 dayParschauer Karah HerdmanEVP and Chief Legal OfficerSSale−4.38K$45.00−$197.0K−7.8%52.0K after
May 19, 2023 (view filing)May 181 dayPinion John RichardSee RemarksSSale−2.01K$50.00−$100.6K−2.6%74.7K after
Jun 9, 2023 (view filing)Jun 81 daySanders Corazon (Corsee) D.DirectorSSale−1.49K$51.65−$76.7K−13.4%9.57K after
Jun 21, 2023 (view filing)Jun 192 daysHarris ErikEVP & Chief Commercial OfficerSSale−305$48.20−$14.7K−0.5%57.3K after
Jun 30, 2023 (view filing)Jun 30Same daySanders Corazon (Corsee) D.DirectorSSale−585$46.76−$27.4K−6.1%8.98K after
Sep 6, 2023 (view filing)Sep 15 daysHuizenga Theodore AlanSVP, Chief Accounting OfficerSSale−970$37.15−$36.0K−3.9%23.8K after2 lots
Sep 6, 2023 (view filing)Sep 51 dayHarris ErikEVP & Chief Commercial OfficerSSale−6.00K$37.96−$227.8K−10.5%51.3K after
Sep 11, 2023 (view filing)Sep 74 daysHuizenga Theodore AlanSVP, Chief Accounting OfficerSSale−2.16K$40.80−$88.2K−8.4%23.6K after2 lots
Oct 23, 2023 (view filing)Oct 194 daysKakkis Emil DPresident & CEOSSale−47.9K$33.52−$1.60M−7.4%599.7K after
Oct 24, 2023 (view filing)Oct 231 dayKassberg Thomas RichardCBO & EVPSSale−39.9K$32.78−$1.31M−13.9%246.9K after10b5-1
Jan 2, 2024 (view filing)Dec 29, 20234 daysKakkis Emil DPresident & CEOSSale−30.0K$47.87−$1.44M−5.0%569.8K after
Feb 8, 2024 (view filing)Feb 71 dayKakkis Emil DPresident & CEOSSale−30.0K$45.00−$1.35M−5.3%539.8K after
Mar 5, 2024 (view filing)Mar 14 daysHarris ErikEVP & Chief Commercial OfficerSSale−4.77K$53.76−$256.3K−6.6%67.2K after
Mar 5, 2024 (view filing)Mar 14 daysCrombez EricEVP and Chief Medical OfficerSSale−1.24K$53.76−$66.6K−2.5%48.9K after