RARE · Ultragenyx Pharmaceutical Inc. Common Stock
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| Emil D. Kakkis President & CEO | ▲ Buy | Grant | 735,739 Shares held | 4/16/2026 | View profile |
| Kassberg Thomas Richard CBO & EVP | ▼ Sell | Tax Withholding | 264,730 Shares held | 3/3/2025 | View profile |
| Dennis Karl Huang See Remarks | ▲ Buy | Grant | 147,845 Shares held | 4/16/2026 | View profile |
| John Richard Pinion See Remarks | ▲ Buy | Grant | 133,142 Shares held | 4/16/2026 | View profile |
| Erik Harris EVP & Chief Commercial Officer | ▲ Buy | Grant | 118,410 Shares held | 4/16/2026 | View profile |
| Eric Crombez EVP and Chief Medical Officer | ▼ Sell | Open Market | 111,189 Shares held | 5/5/2026 | View profile |
| Howard Horn CFO | ▼ Sell | Open Market | 96,295 Shares held | 8/3/2026 | View profile |
| Karah Herdman Parschauer EVP and Chief Legal Officer | ▼ Sell | Open Market | 92,562 Shares held | 8/3/2026 | View profile |
| Theodore Alan Huizenga SVP, Chief Accounting Officer | ▲ Buy | Grant | 68,911 Shares held | 4/22/2026 | View profile |
| Mardi Dier CFO & Executive Vice President | ▼ Sell | Open Market | 66,695 Shares held | 10/14/2022 | View profile |
| Bedrosian Camille L EVP and Chief Medical Officer | ▼ Sell | Open Market | 46,720 Shares held | 3/1/2023 | View profile |
| Michael Narachi Director | ▲ Buy | Grant | 40,441 Shares held | 5/14/2026 | View profile |
| Daniel G. Welch Director | ▲ Buy | Grant | 40,441 Shares held | 5/14/2026 | View profile |
| Deborah Dunsire Director | ▲ Buy | Grant | 38,566 Shares held | 5/14/2026 | View profile |
| Matthew K. Fust Director | ▲ Buy | Grant | 33,696 Shares held | 5/14/2026 | View profile |
| Amrit Ray Director | ▲ Buy | Grant | 31,116 Shares held | 5/14/2026 | View profile |
| Shehnaaz Suliman Director | ▼ Sell | Open Market | 27,951 Shares held | 5/18/2026 | View profile |
| Corazon (Corsee) D. Sanders Director | ▼ Sell | Open Market | 21,095 Shares held | 6/15/2026 | View profile |
| Ekman Lars Director | ▲ Buy | Grant | 17,745 Shares held | 6/24/2022 | View profile |
Transaction History
| Karah Herdman Parschauer | ▼ Sell | Open Market | 1,900 | $47K | 8/3/2026 |
| Howard Horn | ▼ Sell | Open Market | 4,696 | $117K | 8/3/2026 |
| Howard Horn | ▼ Sell | Open Market | 4,698 | $156K | 7/1/2026 |
| Corazon (Corsee) D. Sanders | ▼ Sell | Open Market | 2,000 | $50K | 6/15/2026 |
| Karah Herdman Parschauer | ▼ Sell | Open Market | 1,899 | $47K | 6/15/2026 |
| Howard Horn | ▼ Sell | Open Market | 4,653 | $111K | 6/1/2026 |
| Shehnaaz Suliman | ▼ Sell | Open Market | 5,740 | $144K | 5/18/2026 |
| Matthew K. Fust | ▲ Buy | Grant | 7,751 | $0 | 5/14/2026 |
| Shehnaaz Suliman | ▲ Buy | Grant | 7,751 | $0 | 5/14/2026 |
| Amrit Ray | ▲ Buy | Grant | 7,751 | $0 | 5/14/2026 |
| Corazon (Corsee) D. Sanders | ▲ Buy | Grant | 7,751 | $0 | 5/14/2026 |
| Michael Narachi | ▲ Buy | Grant | 7,751 | $0 | 5/14/2026 |
| Daniel G. Welch | ▲ Buy | Grant | 7,751 | $0 | 5/14/2026 |
| Deborah Dunsire | ▲ Buy | Grant | 7,751 | $0 | 5/14/2026 |
| Eric Crombez | ▼ Sell | Open Market | 344 | $9K | 5/5/2026 |
| Howard Horn | ▼ Sell | Open Market | 4,683 | $117K | 5/1/2026 |
| Theodore Alan Huizenga | ▲ Buy | Grant | 20,241 | $0 | 4/22/2026 |
| Emil D. Kakkis | ▲ Buy | Grant | 76,745 | $0 | 4/16/2026 |
| Dennis Karl Huang | ▲ Buy | Grant | 23,116 | $0 | 4/16/2026 |
| John Richard Pinion | ▲ Buy | Grant | 23,116 | $0 | 4/16/2026 |
| Karah Herdman Parschauer | ▲ Buy | Grant | 28,895 | $0 | 4/16/2026 |
| Erik Harris | ▲ Buy | Grant | 28,895 | $0 | 4/16/2026 |
| Eric Crombez | ▲ Buy | Grant | 34,674 | $0 | 4/16/2026 |
| Howard Horn | ▲ Buy | Grant | 34,674 | $0 | 4/16/2026 |
| Howard Horn | ▼ Sell | Open Market | 4,683 | $98K | 4/1/2026 |
| Karah Herdman Parschauer | ▼ Sell | Open Market | 3,508 | $80K | 3/10/2026 |
| Karah Herdman Parschauer | ▼ Sell | Open Market | 6,018 | $129K | 3/6/2026 |
| Howard Horn | ▼ Sell | Open Market | 1,635 | $37K | 3/3/2026 |
| John Richard Pinion | ▼ Sell | Open Market | 10,029 | $229K | 3/2/2026 |
| Erik Harris | ▼ Sell | Open Market | 10,539 | $240K | 3/2/2026 |
| Emil D. Kakkis | ▼ Sell | Open Market | 54,404 | $1.2M | 3/2/2026 |
| Karah Herdman Parschauer | ▼ Sell | Open Market | 8,135 | $185K | 3/2/2026 |
| Theodore Alan Huizenga | ▼ Sell | Tax Withholding | 148 | $3K | 3/2/2026 |
| Theodore Alan Huizenga | ▼ Sell | Open Market | 1,632 | $37K | 3/2/2026 |
| Howard Horn | ▼ Sell | Open Market | 5,290 | $121K | 3/2/2026 |
| Howard Horn | ▼ Sell | Open Market | 3,119 | $70K | 3/2/2026 |
| Eric Crombez | ▼ Sell | Open Market | 7,029 | $160K | 3/2/2026 |
| Dennis Karl Huang | ▼ Sell | Tax Withholding | 999 | $23K | 3/2/2026 |
| John Richard Pinion | ▲ Buy | Grant | 11,137 | $0 | 3/1/2026 |
| Erik Harris | ▲ Buy | Grant | 11,643 | $0 | 3/1/2026 |
| Emil D. Kakkis | ▲ Buy | Grant | 71,177 | $0 | 3/1/2026 |
| Karah Herdman Parschauer | ▲ Buy | Grant | 11,137 | $0 | 3/1/2026 |
| Howard Horn | ▲ Buy | Grant | 6,143 | $0 | 3/1/2026 |
| Eric Crombez | ▲ Buy | Grant | 11,643 | $0 | 3/1/2026 |
| Dennis Karl Huang | ▲ Buy | Grant | 11,137 | $0 | 3/1/2026 |
| Howard Horn | ▼ Sell | Open Market | 3,061 | $72K | 2/2/2026 |
| Howard Horn | ▼ Sell | Open Market | 3,150 | $72K | 1/2/2026 |
| Theodore Alan Huizenga | ▼ Sell | Open Market | 85 | $3K | 12/29/2025 |
| Howard Horn | ▼ Sell | Open Market | 3,081 | $112K | 12/10/2025 |
| Howard Horn | ▼ Sell | Open Market | 7,942 | $250K | 10/13/2025 |
| Theodore Alan Huizenga | ▼ Sell | Open Market | 64 | $2K | 9/18/2025 |
| Karah Herdman Parschauer | ▼ Sell | Open Market | 2,450 | $76K | 9/12/2025 |
| Theodore Alan Huizenga | ▼ Sell | Open Market | 84 | $3K | 9/5/2025 |
| Corazon (Corsee) D. Sanders | ▼ Sell | Open Market | 2,405 | $90K | 6/20/2025 |
| Shehnaaz Suliman | ▲ Buy | Grant | 5,740 | $0 | 5/15/2025 |
| Daniel G. Welch | ▲ Buy | Grant | 5,740 | $0 | 5/15/2025 |
| Corazon (Corsee) D. Sanders | ▲ Buy | Grant | 5,740 | $0 | 5/15/2025 |
| Michael Narachi | ▲ Buy | Grant | 5,740 | $0 | 5/15/2025 |
| Matthew K. Fust | ▲ Buy | Grant | 5,740 | $0 | 5/15/2025 |
| Deborah Dunsire | ▲ Buy | Grant | 5,740 | $0 | 5/15/2025 |
| Amrit Ray | ▲ Buy | Grant | 5,740 | $0 | 5/15/2025 |
| Eric Crombez | ▼ Sell | Open Market | 520 | $20K | 5/5/2025 |
| Eric Crombez | ▼ Sell | Open Market | 242 | $8K | 4/21/2025 |
| Howard Horn | ▼ Sell | Open Market | 1,785 | $72K | 3/6/2025 |
| Kassberg Thomas Richard | ▼ Sell | Open Market | 6,028 | $254K | 3/3/2025 |
| Kassberg Thomas Richard | ▼ Sell | Tax Withholding | 508 | $22K | 3/3/2025 |
| Karah Herdman Parschauer | ▼ Sell | Open Market | 12,846 | $541K | 3/3/2025 |
| Eric Crombez | ▼ Sell | Open Market | 8,945 | $377K | 3/3/2025 |
| John Richard Pinion | ▼ Sell | Open Market | 14,439 | $608K | 3/3/2025 |
| John Richard Pinion | ▼ Sell | Tax Withholding | 31 | $1K | 3/3/2025 |
| Emil D. Kakkis | ▼ Sell | Open Market | 73,434 | $3.1M | 3/3/2025 |
| Erik Harris | ▼ Sell | Open Market | 15,103 | $636K | 3/3/2025 |
| Dennis Karl Huang | ▼ Sell | Tax Withholding | 1,348 | $58K | 3/3/2025 |
| Theodore Alan Huizenga | ▼ Sell | Tax Withholding | 141 | $6K | 3/3/2025 |
| Theodore Alan Huizenga | ▼ Sell | Open Market | 967 | $41K | 3/3/2025 |
| Kassberg Thomas Richard | ▲ Buy | Grant | 18,443 | $0 | 3/1/2025 |
| Karah Herdman Parschauer | ▲ Buy | Grant | 18,443 | $0 | 3/1/2025 |
| Eric Crombez | ▲ Buy | Grant | 16,813 | $0 | 3/1/2025 |
| Eric Crombez | ▲ Buy | Grant | 14,971 | $0 | 3/1/2025 |
| John Richard Pinion | ▲ Buy | Grant | 14,494 | $0 | 3/1/2025 |
| John Richard Pinion | ▲ Buy | Grant | 18,443 | $0 | 3/1/2025 |
| Emil D. Kakkis | ▲ Buy | Grant | 43,268 | $0 | 3/1/2025 |
| Emil D. Kakkis | ▲ Buy | Grant | 107,292 | $0 | 3/1/2025 |
| Erik Harris | ▲ Buy | Grant | 16,813 | $0 | 3/1/2025 |
| Erik Harris | ▲ Buy | Grant | 18,443 | $0 | 3/1/2025 |
| Dennis Karl Huang | ▲ Buy | Grant | 14,494 | $0 | 3/1/2025 |
| Dennis Karl Huang | ▲ Buy | Grant | 18,443 | $0 | 3/1/2025 |
| Theodore Alan Huizenga | ▲ Buy | Grant | 9,392 | $0 | 3/1/2025 |
| Howard Horn | ▲ Buy | Grant | 15,653 | $0 | 3/1/2025 |
| Karah Herdman Parschauer | ▲ Buy | Grant | 14,494 | $0 | 3/1/2025 |
| Emil D. Kakkis | ▼ Sell | Open Market | 25,000 | $1.1M | 2/28/2025 |
| Karah Herdman Parschauer | ▼ Sell | Open Market | 2,230 | $96K | 2/27/2025 |
| Karah Herdman Parschauer | ▼ Sell | Open Market | 760 | $32K | 2/27/2025 |
| Emil D. Kakkis | ▼ Sell | Open Market | 11,727 | $495K | 12/30/2024 |
| Theodore Alan Huizenga | ▼ Sell | Gift | 648 | $0 | 12/10/2024 |
| Emil D. Kakkis | ▼ Sell | Open Market | 8,273 | $414K | 12/10/2024 |
| Emil D. Kakkis | ▼ Sell | Gift | 20,000 | $0 | 12/9/2024 |
| Howard Horn | ▼ Sell | Open Market | 7,465 | $394K | 10/10/2024 |
| Theodore Alan Huizenga | ▲ Buy | Grant | 700 | $0 | 9/16/2024 |
| Emil D. Kakkis | ▼ Sell | Open Market | 20,000 | $1.1M | 9/3/2024 |
| Theodore Alan Huizenga | ▼ Sell | Open Market | 91 | $5K | 9/3/2024 |
| Emil D. Kakkis | ▼ Sell | Open Market | 20,000 | $1.0M | 8/6/2024 |
| Corazon (Corsee) D. Sanders | ▼ Sell | Open Market | 584 | $24K | 7/2/2024 |
| Deborah Dunsire | ▲ Buy | Grant | 5,345 | $0 | 6/18/2024 |
| Matthew K. Fust | ▲ Buy | Grant | 5,345 | $0 | 6/18/2024 |
| Daniel G. Welch | ▲ Buy | Grant | 5,345 | $0 | 6/18/2024 |
| Michael Narachi | ▲ Buy | Grant | 5,345 | $0 | 6/18/2024 |
| Amrit Ray | ▲ Buy | Grant | 5,345 | $0 | 6/18/2024 |
| Corazon (Corsee) D. Sanders | ▲ Buy | Grant | 5,345 | $0 | 6/18/2024 |
| Shehnaaz Suliman | ▲ Buy | Grant | 5,345 | $0 | 6/18/2024 |
| Karah Herdman Parschauer | ▼ Sell | Open Market | 9,806 | $441K | 6/12/2024 |
| Corazon (Corsee) D. Sanders | ▼ Sell | Open Market | 1,737 | $71K | 6/10/2024 |
| Eric Crombez | ▼ Sell | Open Market | 354 | $15K | 5/2/2024 |
| Eric Crombez | ▼ Sell | Open Market | 142 | $6K | 4/18/2024 |
| Theodore Alan Huizenga | ▼ Sell | Tax Withholding | 14 | $592 | 4/16/2024 |
| Kassberg Thomas Richard | ▼ Sell | Open Market | 11,509 | $575K | 3/11/2024 |
| Matthew K. Fust | ▼ Sell | Open Market | 2,550 | $130K | 3/7/2024 |
| Matthew K. Fust | ▼ Sell | Open Market | 2,145 | $109K | 3/7/2024 |
| Matthew K. Fust | ▼ Sell | Open Market | 7,500 | $382K | 3/7/2024 |
| Howard Horn | ▲ Buy | Grant | 19,400 | $0 | 3/1/2024 |
| Karah Herdman Parschauer | ▲ Buy | Grant | 17,800 | $0 | 3/1/2024 |
| Karah Herdman Parschauer | ▲ Buy | Grant | 957 | $0 | 3/1/2024 |
| Karah Herdman Parschauer | ▼ Sell | Open Market | 3,756 | $202K | 3/1/2024 |
| Kassberg Thomas Richard | ▲ Buy | Grant | 17,800 | $0 | 3/1/2024 |
| Kassberg Thomas Richard | ▲ Buy | Grant | 957 | $0 | 3/1/2024 |
| Kassberg Thomas Richard | ▼ Sell | Tax Withholding | 274 | $15K | 3/1/2024 |
| Kassberg Thomas Richard | ▼ Sell | Open Market | 1,011 | $54K | 3/1/2024 |
| Dennis Karl Huang | ▲ Buy | Grant | 17,800 | $0 | 3/1/2024 |
| Dennis Karl Huang | ▲ Buy | Grant | 957 | $0 | 3/1/2024 |
| Dennis Karl Huang | ▼ Sell | Tax Withholding | 470 | $25K | 3/1/2024 |
| John Richard Pinion | ▲ Buy | Grant | 17,800 | $0 | 3/1/2024 |
| John Richard Pinion | ▲ Buy | Grant | 957 | $0 | 3/1/2024 |
| John Richard Pinion | ▼ Sell | Tax Withholding | 60 | $3K | 3/1/2024 |
| John Richard Pinion | ▼ Sell | Open Market | 4,173 | $224K | 3/1/2024 |
| Theodore Alan Huizenga | ▲ Buy | Grant | 13,950 | $0 | 3/1/2024 |
| Theodore Alan Huizenga | ▼ Sell | Tax Withholding | 121 | $6K | 3/1/2024 |
| Theodore Alan Huizenga | ▼ Sell | Open Market | 341 | $18K | 3/1/2024 |
| Eric Crombez | ▲ Buy | Grant | 19,400 | $0 | 3/1/2024 |
| Eric Crombez | ▼ Sell | Open Market | 1,238 | $67K | 3/1/2024 |
| Erik Harris | ▲ Buy | Grant | 19,400 | $0 | 3/1/2024 |
| Erik Harris | ▲ Buy | Grant | 957 | $0 | 3/1/2024 |
| Erik Harris | ▼ Sell | Open Market | 4,768 | $256K | 3/1/2024 |
| Emil D. Kakkis | ▲ Buy | Grant | 38,428 | $0 | 3/1/2024 |
| Emil D. Kakkis | ▼ Sell | Tax Withholding | 17,417 | $935K | 3/1/2024 |
| Emil D. Kakkis | ▲ Buy | Grant | 3,132 | $0 | 3/1/2024 |
| Emil D. Kakkis | ▼ Sell | Open Market | 30,000 | $1.4M | 2/7/2024 |
| Theodore Alan Huizenga | ▲ Buy | Option Exercise | 3,000 | $63K | 1/2/2024 |
| Emil D. Kakkis | ▼ Sell | Open Market | 30,000 | $1.4M | 12/29/2023 |
| Theodore Alan Huizenga | ▲ Buy | Grant | 1,000 | $0 | 12/20/2023 |
| Kassberg Thomas Richard | ▲ Buy | Option Exercise | 39,878 | $274K | 10/23/2023 |
| Kassberg Thomas Richard | ▼ Sell | Open Market | 39,878 | $1.3M | 10/23/2023 |
| Emil D. Kakkis | ▲ Buy | Option Exercise | 47,853 | $328K | 10/19/2023 |
| Emil D. Kakkis | ▼ Sell | Open Market | 47,853 | $1.6M | 10/19/2023 |
| Howard Horn | ▲ Buy | Grant | 80,366 | $0 | 10/9/2023 |
| Theodore Alan Huizenga | ▲ Buy | Option Exercise | 2,000 | $42K | 9/7/2023 |
| Theodore Alan Huizenga | ▼ Sell | Open Market | 2,000 | $82K | 9/7/2023 |
| Theodore Alan Huizenga | ▼ Sell | Open Market | 163 | $6K | 9/7/2023 |
| Erik Harris | ▼ Sell | Open Market | 6,000 | $228K | 9/5/2023 |
| Theodore Alan Huizenga | ▼ Sell | Open Market | 883 | $33K | 9/1/2023 |
| Theodore Alan Huizenga | ▼ Sell | Open Market | 87 | $3K | 9/1/2023 |
| Corazon (Corsee) D. Sanders | ▼ Sell | Open Market | 585 | $27K | 6/30/2023 |
| Erik Harris | ▼ Sell | Open Market | 305 | $15K | 6/19/2023 |
| Corazon (Corsee) D. Sanders | ▼ Sell | Open Market | 1,485 | $77K | 6/8/2023 |
| Amrit Ray | ▲ Buy | Grant | 3,860 | $0 | 6/7/2023 |
| Matthew K. Fust | ▲ Buy | Grant | 3,860 | $0 | 6/7/2023 |
| Matthew K. Fust | ▼ Sell | Other | 3,300 | $171K | 6/7/2023 |
| Corazon (Corsee) D. Sanders | ▲ Buy | Grant | 3,860 | $0 | 6/7/2023 |
| Shehnaaz Suliman | ▲ Buy | Grant | 3,860 | $0 | 6/7/2023 |
| Michael Narachi | ▲ Buy | Grant | 3,860 | $0 | 6/7/2023 |
| Deborah Dunsire | ▲ Buy | Grant | 3,860 | $0 | 6/7/2023 |
| Daniel G. Welch | ▲ Buy | Grant | 3,860 | $0 | 6/7/2023 |
| John Richard Pinion | ▼ Sell | Open Market | 2,012 | $101K | 5/18/2023 |
| Theodore Alan Huizenga | ▲ Buy | Option Exercise | 3,000 | $63K | 5/9/2023 |
| Karah Herdman Parschauer | ▼ Sell | Open Market | 4,378 | $197K | 5/4/2023 |
| Eric Crombez | ▲ Buy | Grant | 4,658 | $0 | 5/1/2023 |
| Theodore Alan Huizenga | ▼ Sell | Tax Withholding | 14 | $535 | 4/16/2023 |
| Theodore Alan Huizenga | ▼ Sell | Other | 181 | $7K | 4/16/2023 |
| Bedrosian Camille L | ▲ Buy | Grant | 2,663 | $0 | 3/1/2023 |
| Bedrosian Camille L | ▼ Sell | Open Market | 3,881 | $176K | 3/1/2023 |
| Karah Herdman Parschauer | ▼ Sell | Open Market | 3,161 | $143K | 3/1/2023 |
| Kassberg Thomas Richard | ▲ Buy | Grant | 2,663 | $0 | 3/1/2023 |
| Kassberg Thomas Richard | ▲ Buy | Grant | 22,000 | $0 | 3/1/2023 |
| Kassberg Thomas Richard | ▼ Sell | Open Market | 1,968 | $89K | 3/1/2023 |
| Kassberg Thomas Richard | ▼ Sell | Other | 3,394 | $155K | 3/1/2023 |
| Theodore Alan Huizenga | ▲ Buy | Grant | 7,590 | $0 | 3/1/2023 |
| Theodore Alan Huizenga | ▼ Sell | Open Market | 100 | $5K | 3/1/2023 |
| Theodore Alan Huizenga | ▼ Sell | Other | 1,333 | $61K | 3/1/2023 |
| Dennis Karl Huang | ▲ Buy | Grant | 2,663 | $0 | 3/1/2023 |
| Dennis Karl Huang | ▲ Buy | Grant | 22,000 | $0 | 3/1/2023 |
| Dennis Karl Huang | ▼ Sell | Open Market | 389 | $18K | 3/1/2023 |
| Dennis Karl Huang | ▼ Sell | Other | 10,599 | $484K | 3/1/2023 |
| John Richard Pinion | ▲ Buy | Grant | 2,663 | $0 | 3/1/2023 |
| John Richard Pinion | ▲ Buy | Grant | 22,000 | $0 | 3/1/2023 |
| John Richard Pinion | ▼ Sell | Open Market | 3,755 | $170K | 3/1/2023 |
| John Richard Pinion | ▼ Sell | Other | 4,014 | $183K | 3/1/2023 |
| Emil D. Kakkis | ▲ Buy | Grant | 8,716 | $0 | 3/1/2023 |
| Emil D. Kakkis | ▲ Buy | Grant | 46,200 | $0 | 3/1/2023 |
| Emil D. Kakkis | ▼ Sell | Tax Withholding | 16,140 | $737K | 3/1/2023 |
| Erik Harris | ▲ Buy | Grant | 2,663 | $0 | 3/1/2023 |
| Erik Harris | ▲ Buy | Grant | 22,000 | $0 | 3/1/2023 |