Huizenga Theodore Alan (CIK 0001603347)

Latest company ownership

RARE - Ultragenyx Pharmaceutical Inc.
Role: SVP, Chief Accounting Officer
Shares held
50,242
Last filed at
Sep 19, 2025
Confidence Score
51.4
2025Q4
Confidence Score History
2015Q2 2025Q4

Recent buy/sell transactions

Exec date Filing date Company Role Signal Confidence Shares % of shares Under plan? Amount (USD)
Sep 18, 2025 Sep 19, 2025 Ultragenyx Pharmaceutical Inc. SVP, Chief Accounting Officer Sell 52.5 -64 -0.13% ✗ $1.9K
Sep 5, 2025 Sep 8, 2025 Ultragenyx Pharmaceutical Inc. SVP, Chief Accounting Officer Sell 52.5 -84 -0.17% ✗ $2.6K
Mar 1, 2025 Mar 4, 2025 Ultragenyx Pharmaceutical Inc. SVP, Chief Accounting Officer Sell 91.3 +8,284 19.80% ✗ $46.8K
Sep 3, 2024 Sep 5, 2024 Ultragenyx Pharmaceutical Inc. SVP, Chief Accounting Officer Sell 52.5 -91 -0.22% ✗ $5.1K
Apr 16, 2024 Apr 18, 2024 Ultragenyx Pharmaceutical Inc. SVP, Chief Accounting Officer Sell 52.5 -14 -0.03% ✗ $592.3
Mar 1, 2024 Mar 5, 2024 Ultragenyx Pharmaceutical Inc. SVP, Chief Accounting Officer Sell 91.3 +13,488 48.36% ✗ $24.8K
Sep 7, 2023 Sep 11, 2023 Ultragenyx Pharmaceutical Inc. SVP, Chief Accounting Officer Sell 28.8 -2,163 -8.39% ✓ $88.2K
Sep 1, 2023 Sep 6, 2023 Ultragenyx Pharmaceutical Inc. SVP, Chief Accounting Officer Sell 41.3 -970 -3.92% ✓ $36K
Apr 16, 2023 Apr 18, 2023 Ultragenyx Pharmaceutical Inc. SVP, Chief Accounting Officer Sell 50.0 -195 -0.70% ✗ $7.4K
Mar 1, 2023 Mar 3, 2023 Ultragenyx Pharmaceutical Inc. SVP, Chief Accounting Officer Sell 95.0 +6,157 39.57% ✗ $65.4K
Feb 28, 2023 Mar 2, 2023 Ultragenyx Pharmaceutical Inc. SVP, Chief Accounting Officer Sell 41.3 -639 -3.95% ✓ $27.7K
Dec 21, 2022 Dec 22, 2022 Ultragenyx Pharmaceutical Inc. SVP, Chief Accounting Officer Sell 25.0 -2,031 -11.14% ✓ $89.3K
Apr 16, 2022 Apr 19, 2022 Ultragenyx Pharmaceutical Inc. SVP, Chief Accounting Officer Sell 48.8 -132 -0.77% ✗ $11.2K
Mar 1, 2022 Mar 3, 2022 Ultragenyx Pharmaceutical Inc. SVP, Chief Accounting Officer Sell 95.0 +2,867 10.46% ✗ $56.2K
Sep 13, 2021 Oct 18, 2021 Ultragenyx Pharmaceutical Inc. SVP, Chief Accounting Officer Sell 46.3 -959 -6.38% ✗ $11.4K
May 6, 2021 May 10, 2021 Ultragenyx Pharmaceutical Inc. SVP, Chief Accounting Officer Sell 48.8 -142 -0.94% ✗ $16.1K
Mar 8, 2021 Mar 9, 2021 Ultragenyx Pharmaceutical Inc. SVP, Controller and PAO Sell 20.0 -3,000 -18.13% ✗ $362.1K
Mar 1, 2021 Mar 3, 2021 Ultragenyx Pharmaceutical Inc. SVP, Controller and PAO Sell 90.0 +828 5.27% ✗ $101.1K
Jan 7, 2021 Jan 8, 2021 Ultragenyx Pharmaceutical Inc. SVP, Controller and PAO Sell 12.5 -4,000 -20.29% ✓ $562.6K
Oct 14, 2020 Oct 16, 2020 Ultragenyx Pharmaceutical Inc. SVP, Controller and PAO Sell 48.8 -146 -0.88% ✗ $12.8K
Jul 8, 2020 Jul 10, 2020 Ultragenyx Pharmaceutical Inc. SVP, Controller and PAO Sell 32.5 -2,638 -7.37% ✓ $240.1K
Jul 1, 2020 Jul 6, 2020 Ultragenyx Pharmaceutical Inc. SVP, Controller and PAO Sell 32.5 -2,611 -7.05% ✓ $211.5K
May 25, 2020 May 27, 2020 Ultragenyx Pharmaceutical Inc. SVP, Controller and PAO Sell 37.5 -693 -3.64% ✓ $51.4K
May 15, 2020 May 19, 2020 Ultragenyx Pharmaceutical Inc. SVP, Controller and PAO Sell 32.5 -2,461 -6.12% ✓ $174.7K
May 6, 2020 May 8, 2020 Ultragenyx Pharmaceutical Inc. SVP, Controller and PAO Sell 50.0 -138 -0.70% ✗ $9.1K
Apr 19, 2020 Apr 21, 2020 Ultragenyx Pharmaceutical Inc. SVP, Controller and PAO Sell 50.0 -140 -0.70% ✗ $8.2K
Mar 1, 2020 Mar 3, 2020 Ultragenyx Pharmaceutical Inc. SVP, Controller and PAO Sell 86.3 +1,112 6.97% ✗ $21.8K
Jan 14, 2020 Jan 15, 2020 Ultragenyx Pharmaceutical Inc. SVP, Controller and PAO Sell 32.5 -1,000 -5.90% ✓ $61K
May 25, 2019 May 29, 2019 Ultragenyx Pharmaceutical Inc. VP, Controller and PAO Sell 46.3 -433 -2.64% ✗ $24.8K
May 21, 2019 May 22, 2019 Ultragenyx Pharmaceutical Inc. VP, Controller and PAO Sell 50.0 -156 -0.94% ✗ $9.3K
Apr 19, 2019 Apr 23, 2019 Ultragenyx Pharmaceutical Inc. VP, Controller and PAO Sell 50.0 -138 -0.88% ✗ $8.9K
Mar 1, 2019 Apr 17, 2019 Ultragenyx Pharmaceutical Inc. VP, Controller and PAO Sell 86.3 +1,136 7.83% ✗ $16.6K
Mar 1, 2019 Mar 4, 2019 Ultragenyx Pharmaceutical Inc. VP, Controller and PAO Sell 86.3 +1,144 7.89% ✗ $16.6K
Jun 15, 2018 Jun 15, 2018 Ultragenyx Pharmaceutical Inc. VP, Controller and PAO Sell 22.5 -955 -7.41% ✗ $79.9K
Jun 13, 2018 Jun 13, 2018 Ultragenyx Pharmaceutical Inc. VP, Controller and PAO Sell 22.5 -1,338 -11.86% ✗ $103K
May 25, 2018 May 29, 2018 Ultragenyx Pharmaceutical Inc. VP, Controller and PAO Sell 46.3 -433 -3.70% ✗ $29.1K
May 21, 2018 May 22, 2018 Ultragenyx Pharmaceutical Inc. VP, Controller and PAO Sell 46.3 -156 -1.31% ✗ $10.1K
Mar 1, 2018 Mar 5, 2018 Ultragenyx Pharmaceutical Inc. VP, Controller and PAO Sell 90.0 +1,203 12.70% ✗ $5.3K
May 26, 2017 May 26, 2017 Ultragenyx Pharmaceutical Inc. VP, Controller and PAO Sell 46.3 -480 -4.88% ✗ $27.6K
May 21, 2017 May 22, 2017 Ultragenyx Pharmaceutical Inc. VP, Controller and PAO Sell 47.5 -166 -1.66% ✗ $9.5K
Mar 9, 2017 Mar 10, 2017 Ultragenyx Pharmaceutical Inc. Controller and PAO Sell 22.5 -2,500 -20.48% ✗ $215.8K
Nov 16, 2016 Nov 18, 2016 Ultragenyx Pharmaceutical Inc. Controller and PAO Sell 22.5 -2,000 -15.23% ✗ $159.5K
Jun 17, 2015 Nov 18, 2016 Ultragenyx Pharmaceutical Inc. Controller and PAO Sell 22.5 -1,500 -25.86% ✗ $142.2K
May 21, 2016 May 24, 2016 Ultragenyx Pharmaceutical Inc. Controller and PAO Sell 46.3 -166 -3.69% ✗ $10.6K
Dec 18, 2015 Dec 18, 2015 Ultragenyx Pharmaceutical Inc. Controller and PAO Sell 22.5 -1,500 -37.50% ✗ $165.8K
Jun 17, 2015 Jun 19, 2015 Ultragenyx Pharmaceutical Inc. Controller and PAO Sell 22.5 -1,500 -37.50% ✗ $142.2K