Ultragenyx Pharmaceutical Inc. (RARE) Insider Trading
Over the last 3 months, RARE insiders made 0 open-market buys and 5 sales, a net sale of -$417K (SEC Form 4). Over the last 6 months, 236 institutions increased and 196 reduced their position (13F).
Insider Activity
Sentiment
0/100
Buys (3m)
0
Sells (3m)
5
Net (3m)
-$416.9K
Insider trades by month Buys Sells
Mar
Apr
May
Jun
Jul
Aug
Context3-month price +9.8%Institutions accumulating (13F)
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| Aug 4, 2026 | Horn Howardofficer: Chief Financial Officer | Sell | 4,696 | $24.92 |
| Aug 4, 2026 | Parschauer Karah Herdmanofficer: EVP and Chief Legal Officer | Sell | 1,900 | $24.92 |
| Jul 6, 2026 | Horn Howardofficer: Chief Financial Officer | Sell | 4,698 | $33.13 |
| Jun 15, 2026 | Sanders Corazon (Corsee) D.director | Sell | 2,000 | $25.05 |
| Jun 15, 2026 | Parschauer Karah Herdmanofficer: EVP and Chief Legal Officer | Sell | 1,899 | $24.62 |
| Jun 1, 2026 | Horn Howardofficer: Chief Financial Officer | Sell | 4,653 | $23.77 |
| May 18, 2026 | SULIMAN SHEHNAAZdirector | Grant | 14,058 | $25.80 |
| May 18, 2026 | SULIMAN SHEHNAAZdirector | Grant | 7,751 | — |
| May 18, 2026 | NARACHI MICHAELdirector | Grant | 7,751 | — |
| May 18, 2026 | WELCH DANIEL Gdirector | Grant | 14,058 | $25.80 |
| May 18, 2026 | Fust Matthew Kdirector | Grant | 7,751 | — |
| May 18, 2026 | Dunsire Deborahdirector | Grant | 14,058 | $25.80 |
| May 18, 2026 | Sanders Corazon (Corsee) D.director | Grant | 14,058 | $25.80 |
| May 18, 2026 | Fust Matthew Kdirector | Grant | 14,058 | $25.80 |
| May 18, 2026 | Dunsire Deborahdirector | Grant | 7,751 | — |
| May 18, 2026 | NARACHI MICHAELdirector | Grant | 14,058 | $25.80 |
| May 18, 2026 | WELCH DANIEL Gdirector | Grant | 7,751 | — |
| May 18, 2026 | Ray Amritdirector | Grant | 14,058 | $25.80 |
| May 18, 2026 | SULIMAN SHEHNAAZdirector | Sell | 5,740 | $25.12 |
| May 18, 2026 | Sanders Corazon (Corsee) D.director | Grant | 7,751 | — |
| May 18, 2026 | Ray Amritdirector | Grant | 7,751 | — |
| May 6, 2026 | Crombez Ericofficer: EVP and Chief Medical Officer | Sell | 344 | $24.96 |
| May 4, 2026 | Horn Howardofficer: Chief Financial Officer | Sell | 4,683 | $24.90 |
| Apr 24, 2026 | Huizenga Theodore Alanofficer: SVP, Chief Accounting Officer | Grant | 7,348 | $24.61 |
| Apr 24, 2026 | Huizenga Theodore Alanofficer: SVP, Chief Accounting Officer | Grant | 20,241 | — |
| Apr 20, 2026 | Huang Dennis Karlofficer: See Remarks | Grant | 79,936 | $24.52 |
| Apr 20, 2026 | Parschauer Karah Herdmanofficer: EVP and Chief Legal Officer | Grant | 28,895 | — |
| Apr 20, 2026 | Harris Erikofficer: EVP & Chief Commercial Officer | Grant | 28,895 | — |
| Apr 20, 2026 | Crombez Ericofficer: EVP and Chief Medical Officer | Grant | 34,674 | — |
| Apr 20, 2026 | Pinion John Richardofficer: See Remarks | Grant | 23,116 | — |
Source: RARE SEC Form 4 filings, latest Aug 4, 2026. For informational purposes only — not investment advice.
Institutional activity (13F)
How institutions changed their RARE positions over the last 6 months (SEC Form 13F).
Increased
236
New positions
122
Reduced
196
Sold out
41
Largest moves
| Institution | Action | Shares | Filed |
|---|---|---|---|
| BlackRock, Inc. | Increased | 10.7M | Aug 7, 2026 |
| RTW INVESTMENTS, LP | Increased | 7.8M | Aug 14, 2026 |
| BLACKROCK, INC. | Increased | 7.3M | May 13, 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Increased | 6.8M | Aug 13, 2026 |
| AQR CAPITAL MANAGEMENT LLC | Increased | 6.6M | Aug 14, 2026 |
| STATE STREET CORP | Increased | 6.2M | Aug 7, 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | New Position | 5.4M | May 8, 2026 |
| STATE STREET CORP | Increased | 5.0M | May 15, 2026 |
| AQR CAPITAL MANAGEMENT LLC | Increased | 4.6M | May 15, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | Increased | 4.3M | Aug 13, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | New Position | 4.2M | May 15, 2026 |
| RTW INVESTMENTS, LP | Increased | 3.6M | May 15, 2026 |
| TWO SIGMA INVESTMENTS, LP | Increased | 3.6M | Aug 14, 2026 |
| SOFINNOVA INVESTMENTS, INC. | Increased | 3.5M | May 15, 2026 |
| SANDS CAPITAL MANAGEMENT, LLC | Reduced | 3.2M | May 8, 2026 |
Source: SEC Form 13F filings. For informational purposes only — not investment advice.