RARE
Ultragenyx Pharmaceutical Inc.
NASDAQ · Healthcare · Biotechnology · US
$17.16
+3.19%0
Insider buys (3m)
3
Insider sells (3m)
-$127.6K
Net value (3m)
-31.7%
Price return (3m)
Form 4 filings
| Date | Insider | Activity | Shares | Price |
|---|---|---|---|---|
| Oct 19, 2026 | Horn Howard · officer: Chief Financial Officer | Sale | 7,066 | $15 |
| Sep 15, 2026 | Huizenga Theodore Alan · officer: SVP, Chief Accounting Officer | Sale | 1,283 | $14 |
| Sep 8, 2026 | Huizenga Theodore Alan · officer: SVP, Chief Accounting Officer | Sale | 161 | $14 |
| Aug 4, 2026 | Parschauer Karah Herdman · officer: EVP and Chief Legal Officer | Sale | 1,900 | $25 |
| Aug 4, 2026 | Horn Howard · officer: Chief Financial Officer | Sale | 4,696 | $25 |
| Jul 6, 2026 | Horn Howard · officer: Chief Financial Officer | Sale | 4,698 | $33 |
| Jun 15, 2026 | Parschauer Karah Herdman · officer: EVP and Chief Legal Officer | Sale | 1,899 | $25 |
| Jun 15, 2026 | Sanders Corazon (Corsee) D. · director | Sale | 2,000 | $25 |
| Jun 1, 2026 | Horn Howard · officer: Chief Financial Officer | Sale | 4,653 | $24 |
| May 18, 2026 | NARACHI MICHAEL · director | A-Award | 14,058 | $26 |
| May 18, 2026 | Dunsire Deborah · director | A-Award | 14,058 | $26 |
| May 18, 2026 | WELCH DANIEL G · director | A-Award | 7,751 | $0.00 |
| May 18, 2026 | SULIMAN SHEHNAAZ · director | A-Award | 14,058 | $26 |
| May 18, 2026 | Sanders Corazon (Corsee) D. · director | A-Award | 7,751 | $0.00 |
| May 18, 2026 | Dunsire Deborah · director | A-Award | 7,751 | $0.00 |
| May 18, 2026 | Fust Matthew K · director | A-Award | 7,751 | $0.00 |
| May 18, 2026 | Ray Amrit · director | A-Award | 14,058 | $26 |
| May 18, 2026 | SULIMAN SHEHNAAZ · director | A-Award | 7,751 | $0.00 |
| May 18, 2026 | Ray Amrit · director | A-Award | 7,751 | $0.00 |
| May 18, 2026 | Sanders Corazon (Corsee) D. · director | A-Award | 14,058 | $26 |
| May 18, 2026 | SULIMAN SHEHNAAZ · director | Sale | 5,740 | $25 |
| May 18, 2026 | Fust Matthew K · director | A-Award | 14,058 | $26 |
| May 18, 2026 | WELCH DANIEL G · director | A-Award | 14,058 | $26 |
| May 18, 2026 | NARACHI MICHAEL · director | A-Award | 7,751 | $0.00 |
| May 6, 2026 | Crombez Eric · officer: EVP and Chief Medical Officer | Sale | 344 | $25 |
| May 4, 2026 | Horn Howard · officer: Chief Financial Officer | Sale | 4,683 | $25 |
| Apr 24, 2026 | Huizenga Theodore Alan · officer: SVP, Chief Accounting Officer | A-Award | 7,348 | $25 |
| Apr 24, 2026 | Huizenga Theodore Alan · officer: SVP, Chief Accounting Officer | A-Award | 20,241 | $0.00 |
| Apr 20, 2026 | Crombez Eric · officer: EVP and Chief Medical Officer | A-Award | 59,952 | $25 |
| Apr 20, 2026 | Harris Erik · officer: EVP & Chief Commercial Officer | A-Award | 49,960 | $25 |
Institutional positioning
13F filings over the trailing two quarters
New 123Increased 239Reduced 195Sold out 58
| Filer | Action | Shares | Filed |
|---|---|---|---|
| BlackRock, Inc. | Increased | 10,654,276 | Aug 7, 2026 |
| RTW INVESTMENTS, LP | Increased | 7,796,895 | Aug 14, 2026 |
| BLACKROCK, INC. | Increased | 7,299,598 | May 13, 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Increased | 6,790,135 | Aug 13, 2026 |
| AQR CAPITAL MANAGEMENT LLC | Increased | 6,560,809 | Aug 14, 2026 |
| STATE STREET CORP | Increased | 6,158,766 | Sep 22, 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | New Position | 5,385,992 | May 8, 2026 |
| STATE STREET CORP | Increased | 5,021,441 | May 15, 2026 |
| AQR CAPITAL MANAGEMENT LLC | Increased | 4,578,024 | May 15, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | Increased | 4,296,491 | Aug 13, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | New Position | 4,189,831 | May 15, 2026 |
| RTW INVESTMENTS, LP | Increased | 3,648,795 | May 15, 2026 |
| TWO SIGMA INVESTMENTS, LP | Increased | 3,621,200 | Aug 14, 2026 |
| SOFINNOVA INVESTMENTS, INC. | Increased | 3,495,888 | May 15, 2026 |
| SANDS CAPITAL MANAGEMENT, LLC | Reduced | 3,214,533 | May 8, 2026 |
Insider activity from SEC Form 4; institutional positioning from 13F filings · Latest filing Oct 19, 2026