16 insiders reported 87 Form 4 transactions for Ultragenyx Pharmaceutical Inc. (RARE) over the past 18 months (most recent 2026-07-06). Recent activity: Horn Howard (Chief Financial Officer) Sell 4,698 shares, Horn Howard (Chief Financial Officer) Sell 4,653 shares, WELCH DANIEL G (Director) Buy 7,751 shares, Dunsire Deborah (Director) Buy 7,751 shares, NARACHI MICHAEL (Director) Buy 7,751 shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-07-06 | Horn Howard | Chief Financial Officer | Sell | 4,698 | $155,645 |
| 2026-06-01 | Horn Howard | Chief Financial Officer | Sell | 4,653 | $110,602 |
| 2026-05-18 | WELCH DANIEL G | Director | Buy | 7,751 | $0 |
| 2026-05-18 | Dunsire Deborah | Director | Buy | 7,751 | $0 |
| 2026-05-18 | NARACHI MICHAEL | Director | Buy | 7,751 | $0 |
| 2026-05-18 | Fust Matthew K | Director | Buy | 7,751 | $0 |
| 2026-05-18 | SULIMAN SHEHNAAZ | Director | Buy | 7,751 | $0 |
| 2026-05-18 | Sanders Corazon (Corsee) D. | Director | Buy | 7,751 | $0 |
| 2026-05-18 | Ray Amrit | Director | Buy | 7,751 | $0 |
| 2026-05-18 | SULIMAN SHEHNAAZ | Director | Sell | 5,740 | $144,189 |
| 2026-04-24 | Huizenga Theodore Alan | SVP, Chief Accounting Officer | Buy | 20,241 | $0 |
| 2026-04-20 | Huang Dennis Karl | See Remarks | Buy | 23,116 | $0 |
| 2026-04-20 | KAKKIS EMIL D | President & CEO | Buy | 76,745 | $0 |
| 2026-04-20 | Pinion John Richard | See Remarks | Buy | 23,116 | $0 |
| 2026-04-20 | Crombez Eric | EVP and Chief Medical Officer | Buy | 34,674 | $0 |
| 2026-04-20 | Parschauer Karah Herdman | EVP and Chief Legal Officer | Buy | 28,895 | $0 |
| 2026-04-20 | Harris Erik | EVP & Chief Commercial Officer | Buy | 28,895 | $0 |
| 2026-04-20 | Horn Howard | Chief Financial Officer | Buy | 34,674 | $0 |
| 2026-04-02 | Horn Howard | Chief Financial Officer | Sell | 4,683 | $98,203 |
| 2026-03-10 | Parschauer Karah Herdman | EVP and Chief Legal Officer | Sell | 6,018 | $128,785 |
| 2026-03-10 | Parschauer Karah Herdman | EVP and Chief Legal Officer | Sell | 3,508 | $79,526 |
| 2026-03-03 | Huang Dennis Karl | See Remarks | Buy | 11,137 | $0 |
| 2026-03-03 | Huang Dennis Karl | See Remarks | Sell | 999 | $23,367 |
| 2026-03-03 | Huizenga Theodore Alan | SVP, Chief Accounting Officer | Sell | 148 | $3,462 |
| 2026-03-03 | Huizenga Theodore Alan | SVP, Chief Accounting Officer | Sell | 1,632 | $37,210 |
Source: SEC Form 4 filings · as of 2026-07-06