Theodore A. Huizenga's most recent trade in Ultragenyx Pharmaceutical Inc. was a trade of 85 Common Stock done at an average price of $34.4 . Disclosure was reported to the exchange on Dec. 29, 2025.
| Stock | Client Name | Client Category | Action | Reported to Exchange | Quantity | Post Transaction Holding | Traded % | Avg. Price | Value | Security Type |
|---|---|---|---|---|---|---|---|---|---|---|
| Ultragenyx Pharmaceutical Inc | Theodore A. Huizenga | SVP, Chief Accounting Officer | Sale of securities on an exchange or to another person at price $ 34.38 per share. | 29 Dec 2025 | 85 | 50,450 (0%) | 0% | 34.4 | 2,922 | Common Stock |
| Ultragenyx Pharmaceutical Inc | Theodore A. Huizenga | SVP, Chief Accounting Officer | Sale of securities on an exchange or to another person at price $ 29.17 per share. | 18 Sep 2025 | 64 | 50,242 (0%) | 0% | 29.2 | 1,867 | Common Stock |
| Ultragenyx Pharmaceutical Inc | Theodore A. Huizenga | SVP, Chief Accounting Officer | Sale of securities on an exchange or to another person at price $ 31.39 per share. | 05 Sep 2025 | 84 | 50,306 (0%) | 0% | 31.4 | 2,637 | Common Stock |
| Ultragenyx Pharmaceutical Inc | Theodore A. Huizenga | SVP, Chief Accounting Officer | Grant, award, or other acquisition of securities at price $ 0.00 per share. | 01 Mar 2025 | 9,392 | 51,232 (0%) | 0% | 0 | Common Stock | |
| Ultragenyx Pharmaceutical Inc | Theodore A. Huizenga | SVP, Chief Accounting Officer | Grant, award, or other acquisition of securities at price $ 0.00 per share. | 01 Mar 2025 | 5,632 | 5,632 | - | - | Stock Option (Right to Buy) | |
| Ultragenyx Pharmaceutical Inc | Theodore A. Huizenga | SVP, Chief Accounting Officer | Sale of securities on an exchange or to another person at price $ 42.10 per share. | 01 Mar 2025 | 967 | 50,265 (0%) | 0% | 42.1 | 40,711 | Common Stock |
| Ultragenyx Pharmaceutical Inc | Theodore A. Huizenga | SVP, Chief Accounting Officer | Payment of exercise price or tax liability using portion of securities received from the company at price $ 42.92 per share. | 01 Mar 2025 | 141 | 50,124 (0%) | 0% | 42.9 | 6,052 | Common Stock |
| Ultragenyx Pharmaceutical Inc | Theodore A. Huizenga | SVP, Chief Accounting Officer | Gift of securities by or to the insider at price $ 0.00 per share. | 10 Dec 2024 | 648 | 41,840 (0%) | 0% | 0 | Common Stock | |
| Ultragenyx Pharmaceutical Inc | Theodore A. Huizenga | SVP, Chief Accounting Officer | Grant, award, or other acquisition of securities at price $ 0.00 per share. | 16 Sep 2024 | 700 | 42,251 (0%) | 0% | 0 | Common Stock | |
| Ultragenyx Pharmaceutical Inc | Theodore A. Huizenga | SVP, Chief Accounting Officer | Sale of securities on an exchange or to another person at price $ 56.19 per share. | 03 Sep 2024 | 91 | 41,551 (0%) | 0% | 56.2 | 5,113 | Common Stock |
| Ultragenyx Pharmaceutical Inc | Theodore A. Huizenga | SVP, Chief Accounting Officer | Payment of exercise price or tax liability using portion of securities received from the company at price $ 42.29 per share. | 16 Apr 2024 | 14 | 41,366 (0%) | 0% | 42.3 | 592 | Common Stock |
| Ultragenyx Pharmaceutical Inc | Theodore A. Huizenga | SVP, Chief Accounting Officer | Grant, award, or other acquisition of securities at price $ 0.00 per share. | 01 Mar 2024 | 13,950 | 41,842 (0%) | 0% | 0 | Common Stock | |
| Ultragenyx Pharmaceutical Inc | Theodore A. Huizenga | SVP, Chief Accounting Officer | Grant, award, or other acquisition of securities at price $ 0.00 per share. | 01 Mar 2024 | 8,200 | 8,200 | - | - | Stock Option (Right to Buy) | |
| Ultragenyx Pharmaceutical Inc | Theodore A. Huizenga | SVP, Chief Accounting Officer | Grant, award, or other acquisition of securities at price $ 0.00 per share. | 01 Mar 2024 | 2,351 | 2,351 | - | - | Stock Option (Right to Buy) | |
| Ultragenyx Pharmaceutical Inc | Theodore A. Huizenga | SVP, Chief Accounting Officer | Sale of securities on an exchange or to another person at price $ 53.76 per share. | 01 Mar 2024 | 341 | 41,380 (0%) | 0% | 53.8 | 18,332 | Common Stock |
| Ultragenyx Pharmaceutical Inc | Theodore A. Huizenga | SVP, Chief Accounting Officer | Payment of exercise price or tax liability using portion of securities received from the company at price $ 53.69 per share. | 01 Mar 2024 | 121 | 41,721 (0%) | 0% | 53.7 | 6,496 | Common Stock |
| Ultragenyx Pharmaceutical Inc | Huizenga Theodore A. | SVP, Chief Accounting Officer | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. | 20 Dec 2023 | 3,000 | 0 | - | - | Stock Option (Right to Buy) | |
| Ultragenyx Pharmaceutical Inc | Theodore A. Huizenga | SVP, Chief Accounting Officer | Exercise or conversion of derivative security received from the company (such as an option) at price $ 21.00 per share. | 20 Dec 2023 | 3,000 | 27,892 (0%) | 0% | 21 | 63,000 | Common Stock |
| Ultragenyx Pharmaceutical Inc | Theodore Huizenga A. | SVP, Chief Accounting Officer | Grant, award, or other acquisition of securities at price $ 0.00 per share. | 20 Dec 2023 | 1,000 | 24,614 (0%) | 0% | 0 | Common Stock | |
| Ultragenyx Pharmaceutical Inc | Theodore A. Huizenga | SVP, Chief Accounting Officer | Exercise or conversion of derivative security received from the company (such as an option) at price $ 21.00 per share. | 09 May 2023 | 3,000 | 30,747 (0%) | 0% | 21 | 63,000 | Common Stock |
| Ultragenyx Pharmaceutical Inc | Theodore A. Huizenga | SVP, Chief Accounting Officer | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. | 09 May 2023 | 3,000 | 5,000 | - | - | Stock Option (Right to Buy) | |
| Ultragenyx Pharmaceutical Inc | Theodore A. Huizenga | SVP, Chief Accounting Officer | Sale or transfer of securities back to the company at price $ 38.20 per share. | 16 Apr 2023 | 181 | 27,520 (0%) | 0% | 38.2 | 6,914 | Common Stock |
| Ultragenyx Pharmaceutical Inc | Theodore A. Huizenga | SVP, Chief Accounting Officer | Payment of exercise price or tax liability using portion of securities received from the company at price $ 38.21 per share. | 16 Apr 2023 | 14 | 27,701 (0%) | 0% | 38.2 | 535 | Common Stock |
| Ultragenyx Pharmaceutical Inc | Theodore A. Huizenga | SVP, Chief Accounting Officer | Grant, award, or other acquisition of securities at price $ 0.00 per share. | 01 Mar 2023 | 10,120 | 10,120 | - | - | Stock Option (Right to Buy) | |
| Ultragenyx Pharmaceutical Inc | Theodore A. Huizenga | SVP, Chief Accounting Officer | Grant, award, or other acquisition of securities at price $ 0.00 per share. | 01 Mar 2023 | 7,590 | 23,148 (0%) | 0% | 0 | Common Stock | |
| Ultragenyx Pharmaceutical Inc | Theodore A. Huizenga | SVP, Chief Accounting Officer | Sale or transfer of securities back to the company at price $ 45.65 per share. | 01 Mar 2023 | 1,333 | 21,715 (0%) | 0% | 45.6 | 60,851 | Common Stock |
| Ultragenyx Pharmaceutical Inc | Theodore A. Huizenga | SVP, Chief Accounting Officer | Sale of securities on an exchange or to another person at price $ 45.65 per share. | 01 Mar 2023 | 100 | 23,048 (0%) | 0% | 45.7 | 4,565 | Common Stock |
| Ultragenyx Pharmaceutical Inc | Theodore A. Huizenga | SVP, Chief Accounting Officer | Sale of securities on an exchange or to another person at price $ 43.40 per share. | 28 Feb 2023 | 639 | 15,558 (0%) | 0% | 43.4 | 27,733 | Common Stock |
| Ultragenyx Pharmaceutical Inc | Theodore A. Huizenga | SVP, Chief Accounting Officer | Sale of securities on an exchange or to another person at price $ 43.96 per share. | 21 Dec 2022 | 2,031 | 16,197 (0%) | 0% | 44.0 | 89,283 | Common Stock |
| Ultragenyx Pharmaceutical Inc | Theodore A. Huizenga | SVP, Chief Accounting Officer | Grant, award, or other acquisition of securities at price $ 0.00 per share. | 01 Sep 2022 | 1,000 | 18,094 (0%) | 0% | 0 | Common Stock | |
| Ultragenyx Pharmaceutical Inc | Theodore A. Huizenga | SVP, Chief Accounting Officer | Sale of securities on an exchange or to another person at price $ 84.55 per share. | 16 Apr 2022 | 132 | 16,914 (0%) | 0% | 84.6 | 11,161 | Common Stock |
| Ultragenyx Pharmaceutical Inc | Theodore A. Huizenga | SVP, Chief Accounting Officer | Grant, award, or other acquisition of securities at price $ 0.00 per share. | 01 Mar 2022 | 7,400 | 7,400 | - | - | Stock Option (Right to Buy) | |
| Ultragenyx Pharmaceutical Inc | Theodore A. Huizenga | SVP, Chief Accounting Officer | Grant, award, or other acquisition of securities at price $ 0.00 per share. | 01 Mar 2022 | 3,710 | 17,046 (0%) | 0% | 0 | Common Stock | |
| Ultragenyx Pharmaceutical Inc | Theodore A. Huizenga | SVP, Chief Accounting Officer | Sale of securities on an exchange or to another person at price $ 66.62 per share. | 01 Mar 2022 | 843 | 13,229 (0%) | 0% | 66.6 | 56,161 | Common Stock |
| Ultragenyx Pharmaceutical Inc | Theodore A. Huizenga | SVP, Chief Accounting Officer | Gift of securities by or to the insider at price $ 0.00 per share. | 14 Oct 2021 | 819 | 14,212 (0%) | 0% | 0 | Common Stock | |
| Ultragenyx Pharmaceutical Inc | Theodore A. Huizenga | SVP, Chief Accounting Officer | Sale of securities on an exchange or to another person at price $ 81.14 per share. | 14 Oct 2021 | 140 | 14,072 (0%) | 0% | 81.1 | 11,360 | Common Stock |
| Ultragenyx Pharmaceutical Inc | Theodore A. Huizenga | SVP, Chief Accounting Officer | Sale of securities on an exchange or to another person at price $ 113.67 per share. | 06 May 2021 | 142 | 15,031 (0%) | 0% | 113.7 | 16,141 | Common Stock |
| Ultragenyx Pharmaceutical Inc | Theodore A. Huizenga | SVP, Chief Accounting Officer | Grant, award, or other acquisition of securities at price $ 0.00 per share. | 16 Apr 2021 | 1,500 | 15,044 (0%) | 0% | 0 | Common Stock |