Huizenga Theodore Alan
SEC insider (Form 3/4/5 filer). CIK 0001603347. SVP, Chief Accounting Officer at Ultragenyx Pharmaceutical Inc. (RARE). 14 reported Form 4/5 transactions since Sep 2024; latest on Sep 15, 2026. Located in NOVATO, CA.
Companies Huizenga Theodore Alan has filed insider reports for
- Ultragenyx Pharmaceutical Inc. (RARE): Officer, SVP, Chief Accounting Officer
Huizenga Theodore Alan
CIK: 0001603347
Transaction Breakdown
High conviction signal
Position reduction
Derivative conversions
Compensation grants
Gifts, tax withholding, conversions, dispositions to the issuer and other codes
Companies & Roles (1)
Ultragenyx Pharmaceutical Inc.
Discretionary Trading P&L
Holdings
Transaction History (14 total)
- Sep 15, 2026RARE
Ultragenyx Pharmaceutical Inc.
SaleDirect1.3K shares at avg. $13.57$17K - Sep 3, 2026RARE
Ultragenyx Pharmaceutical Inc.
SaleDirect161 shares at avg. $13.99$2K - Apr 22, 2026RARE
Ultragenyx Pharmaceutical Inc.
AwardDirect20.2K shares- - Mar 2, 2026RARE
Ultragenyx Pharmaceutical Inc.
Tax PaymentDirect148 shares at avg. $23.39$3K - Mar 2, 2026RARE
Ultragenyx Pharmaceutical Inc.
SaleDirect1.6K shares at avg. $22.80$37K - Dec 29, 2025RARE
Ultragenyx Pharmaceutical Inc.
SaleDirect85 shares at avg. $34.38$3K - Sep 18, 2025RARE
Ultragenyx Pharmaceutical Inc.
SaleDirect64 shares at avg. $29.17$2K - Sep 5, 2025RARE
Ultragenyx Pharmaceutical Inc.
SaleDirect84 shares at avg. $31.39$3K - Mar 3, 2025RARE
Ultragenyx Pharmaceutical Inc.
SaleDirect967 shares at avg. $42.10$41K - Mar 3, 2025RARE
Ultragenyx Pharmaceutical Inc.
Tax PaymentDirect141 shares at avg. $42.92$6K
| Type | Shares | Price | Ownership | |||
|---|---|---|---|---|---|---|
| Sep 15, 2026 | RARE Ultragenyx Pharmaceutical Inc. | Sale | 1,283 | $13.57 | $17,410 | Direct |
| Sep 3, 2026 | RARE Ultragenyx Pharmaceutical Inc. | Sale | 161 | $13.99 | $2,252 | Direct |
| Apr 22, 2026 | RARE Ultragenyx Pharmaceutical Inc. | Award | 20,241 | - | $0 | Direct |
| Mar 2, 2026 | RARE Ultragenyx Pharmaceutical Inc. | Tax Payment | 148 | $23.39 | $3,462 | Direct |
| Mar 2, 2026 | RARE Ultragenyx Pharmaceutical Inc. | Sale | 1,632 | $22.80 | $37,210 | Direct |
| Dec 29, 2025 | RARE Ultragenyx Pharmaceutical Inc. | Sale | 85 | $34.38 | $2,922 | Direct |
| Sep 18, 2025 | RARE Ultragenyx Pharmaceutical Inc. | Sale | 64 | $29.17 | $1,867 | Direct |
| Sep 5, 2025 | RARE Ultragenyx Pharmaceutical Inc. | Sale | 84 | $31.39 | $2,637 | Direct |
| Mar 3, 2025 | RARE Ultragenyx Pharmaceutical Inc. | Sale | 967 | $42.10 | $40,711 | Direct |
| Mar 3, 2025 | RARE Ultragenyx Pharmaceutical Inc. | Tax Payment | 141 | $42.92 | $6,052 | Direct |
1-10 of 14 transactions