Huizenga Theodore Alan insider trades
Huizenga Theodore Alan has filed 26 Form 4s with the SEC that we hold, all for Ultragenyx Pharmaceutical Inc. (RARE), as SVP, Chief Accounting Officer. Across all of them we count 0 purchases worth $0 and 19 sales worth $453.0K reported on Form 4. In the last 12 months: 0 purchases ($0) and 4 sales ($59.8K). The largest single trade was a sale of 2,031 shares of Ultragenyx Pharmaceutical Inc. worth $89.3K, dated 2022-12-21. Of 2 sales filed since we began reading the 10b5-1 checkbox, 1 (50%) was marked as made under a 10b5-1 trading plan. The first filing on our record is dated 2021-10-18 and the latest 2026-09-15.
Ultragenyx Pharmaceutical Inc. (RARE)
| Trade date | Code | Shares | Value as filed | Filed |
|---|---|---|---|---|
| 2021-10-14 | S, sale reported on Form 4 | 140 | $11.4K | 2021-10-18 |
| 2022-03-01 | S, sale reported on Form 4 | 843 | $56.2K | 2022-03-03 |
| 2022-04-16 | S, sale reported on Form 4 | 132 | $11.2K | 2022-04-19 |
| 2022-12-21 | S, sale reported on Form 4 | 2,031 | $89.3K | 2022-12-22 |
| 2023-02-28 | S, sale reported on Form 4 | 639 | $27.7K | 2023-03-02 |
| 2023-03-01 | S, sale reported on Form 4 | 100 | $4.6K | 2023-03-03 |
| 2023-09-01 | S, sale reported on Form 4 | 87 | $3.3K | 2023-09-06 |
| 2023-09-01 | S, sale reported on Form 4 | 883 | $32.7K | 2023-09-06 |
| 2023-09-07 | S, sale reported on Form 4 | 2,000 | $82.0K | 2023-09-11 |
| 2023-09-07 | S, sale reported on Form 4 | 163 | $6.2K | 2023-09-11 |
| 2024-03-01 | S, sale reported on Form 4 | 341 | $18.3K | 2024-03-05 |
| 2024-09-03 | S, sale reported on Form 4 | 91 | $5.1K | 2024-09-05 |
| 2025-03-03 | S, sale reported on Form 4 | 967 | $40.7K | 2025-03-04 |
| 2025-09-05 | S, sale reported on Form 4 | 84 | $2.6K | 2025-09-08 |
| 2025-09-18 | S, sale reported on Form 4 | 64 | $1.9K | 2025-09-19 |
| 2025-12-29 | S, sale reported on Form 4 | 85 | $2.9K | 2025-12-30 |
| 2026-03-02 | S, sale reported on Form 4 | 1,632 | $37.2K | 2026-03-03 |
| 2026-09-03 | S, sale reported on Form 4 | 161 | $2.3K | 2026-09-08 |
| 2026-09-15 | S, sale reported on Form 4 | 1,283 | $17.4K | 2026-09-15 |
Counted from the Form 4 filings this reporting owner (SEC CIK 1603347) filed on EDGAR. Values are the transaction values as filed. See every filing on EDGAR, or browse insider buying and today's insider purchases.
Source: U.S. Securities and Exchange Commission (EDGAR) and other official
government data · Updated 2026-10-12 ·
For informational purposes only, not investment advice.
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