Ultragenyx Pharmaceutical Inc.
Total Trades
85
Buys
0
Sells
60
Largest Trade
N/A
Insiders
12
Institutional Funds
212
Inst. Value
$1M+
Activist Filings
21
Insider Trades
| Insider | Title | Type | Value | Shares | Price | Date |
|---|---|---|---|---|---|---|
| Pinion John Richard | See Remarks | GRANT | N/A | 11K | — | Mar 4, 2026 |
| Pinion John Richard | See Remarks | SELL | $100K–$500K | 10K | $22.80 | Mar 4, 2026 |
| Harris Erik | EVP & Chief Commer… | GRANT | N/A | 12K | — | Mar 4, 2026 |
| Harris Erik | EVP & Chief Commer… | SELL | $100K–$500K | 11K | $22.80 | Mar 4, 2026 |
| KAKKIS EMIL D | President & CEO | GRANT | N/A | 71K | — | Mar 4, 2026 |
| KAKKIS EMIL D | President & CEO | SELL | $1M+ | 54K | $22.80 | Mar 4, 2026 |
| Parschauer Karah Herdman | EVP and Chief Lega… | GRANT | N/A | 11K | — | Mar 3, 2026 |
| Parschauer Karah Herdman | EVP and Chief Lega… | SELL | $100K–$500K | 8K | $22.80 | Mar 3, 2026 |
| Huizenga Theodore Alan | SVP | SELL | $15K–$50K | 2K | $22.80 | Mar 3, 2026 |
| Horn Howard | CFO | GRANT | N/A | 6K | — | Mar 3, 2026 |
| Horn Howard | CFO | SELL | $100K–$500K | 10K | $22.65 | Mar 3, 2026 |
| Crombez Eric | EVP and Chief Medi… | SELL | $100K–$500K | 7K | $22.80 | Mar 3, 2026 |
| Crombez Eric | EVP and Chief Medi… | GRANT | N/A | 12K | — | Mar 3, 2026 |
| Horn Howard | CFO | SELL | $50K–$100K | 3K | $23.56 | Feb 3, 2026 |
| Horn Howard | CFO | SELL | $50K–$100K | 3K | $22.84 | Jan 5, 2026 |
| Huizenga Theodore Alan | SVP | SELL | $1K–$15K | 85 | $34.38 | Dec 30, 2025 |
| Horn Howard | CFO | SELL | $100K–$500K | 3K | $36.38 | Dec 11, 2025 |
| Huizenga Theodore Alan | SVP | SELL | $1K–$15K | 64 | $29.17 | Sep 19, 2025 |
| Parschauer Karah Herdman | EVP and Chief Lega… | SELL | $50K–$100K | 2K | $31.17 | Sep 12, 2025 |
| Huizenga Theodore Alan | SVP | SELL | $1K–$15K | 84 | $31.39 | Sep 8, 2025 |
| Sanders Corazon (Corsee) D. | Director | SELL | $50K–$100K | 2K | $37.39 | Jun 23, 2025 |
| Crombez Eric | EVP and Chief Medi… | SELL | $15K–$50K | 762 | $37.93 | May 5, 2025 |
| KAKKIS EMIL D | President & CEO | SELL | $100K–$500K | 12K | $42.23 | Dec 31, 2024 |
| Horn Howard | CFO | SELL | $100K–$500K | 7K | $52.76 | Oct 11, 2024 |
| Sanders Corazon (Corsee) D. | Director | SELL | $15K–$50K | 584 | $40.98 | Jul 3, 2024 |
| Parschauer Karah Herdman | EVP and Chief Lega… | SELL | $100K–$500K | 10K | $45.00 | Jun 12, 2024 |
| Sanders Corazon (Corsee) D. | Director | SELL | $50K–$100K | 2K | $41.10 | Jun 10, 2024 |
| Crombez Eric | EVP and Chief Medi… | SELL | $15K–$50K | 354 | $43.66 | May 3, 2024 |
| Crombez Eric | EVP and Chief Medi… | SELL | $1K–$15K | 142 | $44.10 | Apr 19, 2024 |
| KAKKIS EMIL D | President & CEO | SELL | $1M+ | 30K | $45.00 | Feb 8, 2024 |
| KAKKIS EMIL D | President & CEO | SELL | $1M+ | 30K | $47.87 | Jan 2, 2024 |
| Kassberg Thomas Richard | CBO & EVP | SELL | $1M+ | 40K | $32.78 | Oct 24, 2023 |
| Kassberg Thomas Richard | CBO & EVP | EXERCISE | $100K–$500K | 40K | $6.86 | Oct 24, 2023 |
| KAKKIS EMIL D | President & CEO | EXERCISE | $100K–$500K | 48K | $6.86 | Oct 23, 2023 |
| KAKKIS EMIL D | President & CEO | SELL | $1M+ | 48K | $33.52 | Oct 23, 2023 |
| Huizenga Theodore Alan | SVP | SELL | $50K–$100K | 2K | $40.80 | Sep 11, 2023 |
| Huizenga Theodore Alan | SVP | EXERCISE | $15K–$50K | 2K | $21.00 | Sep 11, 2023 |
| Harris Erik | EVP & Chief Commer… | SELL | $100K–$500K | 6K | $37.96 | Sep 6, 2023 |
| Huizenga Theodore Alan | SVP | SELL | $15K–$50K | 970 | $37.15 | Sep 6, 2023 |
| Sanders Corazon (Corsee) D. | Director | SELL | $15K–$50K | 585 | $46.76 | Jun 30, 2023 |
| Harris Erik | EVP & Chief Commer… | SELL | $1K–$15K | 305 | $48.20 | Jun 21, 2023 |
| Sanders Corazon (Corsee) D. | Director | SELL | $50K–$100K | 1K | $51.65 | Jun 9, 2023 |
| Sanders Corazon (Corsee) D. | Director | GRANT | N/A | 4K | — | Jun 9, 2023 |
| Pinion John Richard | See Remarks | SELL | $100K–$500K | 2K | $50.00 | May 19, 2023 |
| Parschauer Karah Herdman | EVP and Chief Lega… | SELL | $100K–$500K | 4K | $45.00 | May 5, 2023 |
| Bedrosian Camille L | EVP and Chief Medi… | GRANT | N/A | 3K | — | Mar 4, 2023 |
| Bedrosian Camille L | EVP and Chief Medi… | SELL | $100K–$500K | 4K | $45.25 | Mar 4, 2023 |
| Parschauer Karah Herdman | EVP and Chief Lega… | SELL | $100K–$500K | 3K | $45.25 | Mar 4, 2023 |
| Parschauer Karah Herdman | EVP and Chief Lega… | GRANT | N/A | 25K | — | Mar 4, 2023 |
| Kassberg Thomas Richard | CBO & EVP | GRANT | N/A | 25K | — | Mar 4, 2023 |
Institutional Ownership
13F filings as of Dec 31, 2025 · 212 funds holding
| Fund | Shares | Value | Type |
|---|---|---|---|
| STATE STREET CORP | 4.3M | $1M+ | SH |
| SANDS CAPITAL MANAGEMENT, LLC | 3.5M | $1M+ | SH |
| NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO | 201K | $1M+ | SH |
| JACOBS LEVY EQUITY MANAGEMENT, INC | 1.7M | $1M+ | SH |
| GEODE CAPITAL MANAGEMENT, LLC | 1.6M | $1M+ | SH |
| BNP Paribas Asset Management Holding S.A. | 1.5M | $1M+ | SH |
| Aberdeen Group plc | 1.5M | $1M+ | SH |
| GW&K Investment Management, LLC | 1.4M | $1M+ | SH |
| NORGES BANK | 1.3M | $1M+ | SH |
| Pictet Asset Management Holding SA | 1.2M | $1M+ | SH |
| BNP PARIBAS FINANCIAL MARKETS | 903K | $1M+ | SH |
| Candriam S.C.A. | 799K | $1M+ | SH |
| Schonfeld Strategic Advisors LLC | 742K | $1M+ | SH |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC | 643K | $1M+ | SH |
| VANGUARD GROUP INC | 601K | $1M+ | SH |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 599K | $1M+ | SH |
| HRT FINANCIAL LP | 502K | $1M+ | SH |
| Jefferies Financial Group Inc. | 477K | $1M+ | SH |
| Palo Alto Investors LP | 461K | $1M+ | SH |
| Squarepoint Ops LLC | 391K | $1M+ | SH |
Activist & 5%+ Owners
SC 13D/13G filings — investors holding 5%+ of outstanding shares
SC 13G/A · Feb 5, 2026
3.5%
3.3M shares
SC 13G · Nov 5, 2025
8.3%
8.0M shares
SC 13G/A · Apr 24, 2025
5.1%
4.8M shares
SC 13G/A · Feb 12, 2025
4.7%
4.3M shares
Wellington Management Group LLP
SC 13G/A · Feb 10, 2025
2.7%
2.5M shares
SC 13G/A · Nov 14, 2024
2.1%
2.0M shares
T. ROWE PRICE ASSOCIATES, INC. 52-0556948
SC 13G/A · Feb 14, 2024
4.2%
3.5M shares
SC 13G/A · Feb 14, 2024
8.4%
6.9M shares
The Vanguard Group - 23-1945930
SC 13G/A · Feb 13, 2024
10.6%
8.7M shares
SC 13G · Feb 13, 2024
5.0%
4.1M shares
SC 13G/A · Jan 29, 2024
6.4%
5.2M shares
The Vanguard Group - 23-1945930
SC 13G/A · Sep 11, 2023
10.1%
7.2M shares
T. ROWE PRICE ASSOCIATES, INC. 52-0556948
SC 13G/A · Feb 14, 2023
5.8%
4.1M shares
SC 13G · Feb 3, 2023
6.2%
4.3M shares
SC 13G/A · Jan 10, 2023
4.4%
3.1M shares
Capital International Investors 95-1411037
SC 13G/A · Dec 9, 2022
2.4%
1.7M shares
T. ROWE PRICE ASSOCIATES, INC. 52-0556948
SC 13G/A · Aug 10, 2022
8.1%
5.7M shares
SC 13G/A · Mar 9, 2022
4.9%
3.4M shares
(entities only Federated Hermes, Inc.
SC 13G/A · Feb 14, 2022
5.8%
4.0M shares
T. ROWE PRICE ASSOCIATES, INC. 52-0556948
SC 13G/A · Feb 14, 2022
16.9%
11.5M shares
Capital International Investors 95-1411037
SC 13G/A · Feb 11, 2022
8.3%
5.6M shares