List of insiders holdings for Ultragenyx Pharmaceutical Inc.:
- Shares directly owned by the insider.
- Shares indirectly owned by the insider.
- Total shares owned by the insider (sum of shares directly and indirectly owned).
- Total market value if available.
- Shares are not adjusted for stock split.
"Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise"
- Peter Lynch
What is insider trading>>
- Peter Lynch
What is insider trading>>
| # | Insider Holder Name | Report Date Time | Shares Owned Directly Indirectly | Total Shares Owned | Filing |
| 1 | KAKKIS EMIL D President & CEO | 2025-03-04 20:10:16 | 720,179 2,158,985 | 2,879,164 | Form 4 |
| 2 | FMR LLC See Remark 1. | 2020-02-07 11:32:16 | 1,824,565 0 | 1,824,565 | Form 13G |
| 3 | TPG Group Holdings (SBS) Advisors Inc. BONDERMAN DAVID COULTER JAMES G Former 10% Owner (2)(3)(4)(5) | 2015-02-13 12:24:24 | 1,596,420 0 | 1,596,420 | Form 13G |
| 4 | Kassberg Thomas Richard CBO & EVP | 2025-03-04 20:19:57 | 264,730 0 | 264,730 | Form 4 |
| 5 | Aliski William Director | 2021-06-28 18:26:31 | 70,974 80,806 | 151,780 | Form 4 |
| 6 | Huang Dennis Karl See Remarks | 2025-03-04 20:02:17 | 140,665 0 | 140,665 | Form 4 |
| 7 | Pinion John Richard See Remarks | 2025-03-04 20:12:26 | 134,502 0 | 134,502 | Form 4 |
| 8 | Harris Erik EVP & Chief Commercial Officer | 2025-03-04 20:06:23 | 118,101 0 | 118,101 | Form 4 |
| 9 | Horn Howard Chief Financial Officer | 2025-10-14 12:15:06 | 98,227 0 | 98,227 | Form 4 |
| 10 | Sharp Shalini EVP, Finance | 2020-10-16 19:15:35 | 97,812 0 | 97,812 | Form 4 |
| 11 | Parschauer Karah Herdman EVP and Chief Legal Officer | 2025-09-12 16:11:58 | 73,271 0 | 73,271 | Form 4 |
| 12 | Crombez Eric EVP and Chief Medical Officer | 2025-05-05 19:18:48 | 71,530 0 | 71,530 | Form 4 |
| 13 | Dier Mardi CFO & Executive Vice President | 2022-10-17 18:49:56 | 66,695 0 | 66,695 | Form 4 |
| 14 | Huizenga Theodore Alan SVP, Chief Accounting Officer | 2025-09-19 18:23:43 | 50,242 0 | 50,242 | Form 4 |
| 15 | Bedrosian Camille L EVP and Chief Medical Officer | 2023-03-03 20:00:36 | 46,720 0 | 46,720 | Form 4 |
| 16 | NARACHI MICHAEL Director | 2025-05-19 18:32:48 | 43,477 0 | 43,477 | Form 4 |
| 17 | WELCH DANIEL G Director | 2025-05-19 18:33:56 | 43,477 0 | 43,477 | Form 4 |
| 18 | Dunsire Deborah Director | 2025-05-19 18:31:42 | 41,602 0 | 41,602 | Form 4 |
| 19 | Fust Matthew K Director | 2025-05-19 18:32:13 | 36,732 0 | 36,732 | Form 4 |
| 20 | SULIMAN SHEHNAAZ Director | 2025-05-19 18:34:32 | 36,727 0 | 36,727 | Form 4 |
| 21 | Ray Amrit Director | 2025-05-19 18:31:03 | 34,152 0 | 34,152 | Form 4 |
| 22 | Ekman Lars Director | 2022-06-28 13:53:43 | 23,990 0 | 23,990 | Form 4 |
| 23 | Dallas Jayson Donald Alexander EVP & Chief Commercial Officer | 2018-06-04 16:50:14 | 23,830 0 | 23,830 | Form 4 |
| 24 | Hogenhuis Wladimir Chief Operating Officer | 2019-10-07 19:40:08 | 18,703 0 | 18,703 | Form 4 |
| 25 | Steen Marten Director | 2014-02-03 20:30:09 | 17,500 0 | 17,500 | Form 4 |
| 26 | Sanders Corazon (Corsee) D. Director | 2025-06-23 13:50:13 | 15,344 0 | 15,344 | Form 4 |
| 27 | AGARWAL SUNIL Chief Medical Officer | 2016-08-23 17:52:15 | 9,136 0 | 9,136 | Form 4 |
| 28 | Nadav Eran Director | 2014-07-17 16:15:52 | 7,500 0 | 7,500 | Form 4 |
| 29 | SIEGALL CLAY B Director | 2020-08-11 12:21:29 | 4,146 0 | 4,146 | Form 4 |