Theodore Alan Huizenga insider trades: Ultragenyx Pharmaceutical (RARE) stock sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where Theodore reports to the SEC
Open-market buys and sales
33 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Sep 15, 2026 | RARE | ↓ Sell | 1,283 | $13.57 | $17K | Direct | Sep 15, 2026 (0d) |
| Sep 3, 2026 | RARE | ↓ Sell | 161 | $13.99 | $2K | Direct | Sep 8, 2026 (5d) |
| Mar 2, 2026 | RARE | ↓ Sell | 1,632 | $22.80 | $37K | Direct | Mar 3, 2026 (1d) |
| Sep 18, 2025 | RARE | ↓ Sell | 64 | $29.17 | $2K | Direct | Sep 19, 2025 (1d) |
| Sep 5, 2025 | RARE | ↓ Sell | 84 | $31.39 | $3K | Direct | Sep 8, 2025 (3d) |
| Mar 3, 2025 | RARE | ↓ Sell | 967 | $42.10 | $41K | Direct | Mar 4, 2025 (1d) |
| Sep 3, 2024 | RARE | ↓ Sell | 91 | $56.19 | $5K | Direct | Sep 5, 2024 (2d) |
| Mar 1, 2024 | RARE | ↓ Sell | 341 | $53.76 | $18K | Direct | Mar 5, 2024 (4d) |
| Sep 7, 2023 | RARE | ↓ Sell | 2,163 | $40.80 | $88K | Direct | Sep 11, 2023 (4d) |
| Sep 1, 2023 | RARE | ↓ Sell10b5-1 | 970 | $37.15 | $36K | Direct | Sep 6, 2023 (5d) |
| Mar 1, 2023 | RARE | ↓ Sell | 100 | $45.65 | $5K | Direct | Mar 3, 2023 (2d) |
| Feb 28, 2023 | RARE | ↓ Sell | 639 | $43.40 | $28K | Direct | Mar 2, 2023 (2d) |
| Dec 21, 2022 | RARE | ↓ Sell | 2,031 | $43.96 | $89K | Direct | Dec 22, 2022 (1d) |
| Apr 16, 2022 | RARE | ↓ Sell | 132 | $84.55 | $11K | Direct | Apr 19, 2022 (3d) |
| Mar 1, 2022 | RARE | ↓ Sell | 843 | $66.62 | $56K | Direct | Mar 3, 2022 (2d) |
| Oct 14, 2021 | RARE | ↓ Sell | 140 | $81.14 | $11K | Direct | Oct 18, 2021 (4d) |
| May 6, 2021 | RARE | ↓ Sell | 142 | $113.67 | $16K | Direct | May 10, 2021 (4d) |
| Mar 8, 2021 | RARE | ↓ Sell | 3,000 | $120.69 | $362K | Direct | Mar 9, 2021 (1d) |
| Mar 1, 2021 | RARE | ↓ Sell | 732 | $138.17 | $101K | Direct | Mar 3, 2021 (2d) |
| Jan 7, 2021 | RARE | ↓ Sell | 4,000 | $140.65 | $563K | Direct | Jan 8, 2021 (1d) |
| Oct 14, 2020 | RARE | ↓ Sell | 146 | $87.98 | $13K | Direct | Oct 16, 2020 (2d) |
| Jul 8, 2020 | RARE | ↓ Sell | 2,638 | $91.00 | $240K | Direct | Jul 10, 2020 (2d) |
| Jul 1, 2020 | RARE | ↓ Sell | 2,611 | $81.00 | $211K | Direct | Jul 6, 2020 (5d) |
| May 26, 2020 | RARE | ↓ Sell | 260 | $74.93 | $19K | Direct | May 27, 2020 (1d) |
| May 15, 2020 | RARE | ↓ Sell | 2,461 | $71.00 | $175K | Direct | May 19, 2020 (4d) |
| Jan 14, 2020 | RARE | ↓ Sell | 1,000 | $61.00 | $61K | Direct | Jan 15, 2020 (1d) |
| Jun 15, 2018 | RARE | ↓ Sell | 955 | $83.70 | $80K | Direct | Jun 15, 2018 (0d) |
| Jun 13, 2018 | RARE | ↓ Sell | 1,338 | $76.97 | $103K | Direct | Jun 13, 2018 (0d) |
| May 26, 2017 | RARE | ↓ Sell | 480 | $57.46 | $28K | Direct | May 26, 2017 (0d) |
| Mar 9, 2017 | RARE | ↓ Sell | 2,500 | $86.34 | $216K | Direct | Mar 10, 2017 (1d) |
| Nov 16, 2016 | RARE | ↓ Sell | 2,000 | $79.73 | $159K | Direct | Nov 18, 2016 (2d) |
| Dec 18, 2015 | RARE | ↓ Sell | 1,500 | $110.55 | $166K | Direct | Dec 18, 2015 (0d) |
| Jun 17, 2015 | RARE | ↓ Sell | 1,500 | $94.80 | $142K | Direct | Jun 19, 2015 (2d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other RARE insiders
Open-market trades in the last 12 months
About Theodore Alan Huizenga's insider trades
Theodore Alan Huizenga is SVP, Chief Accounting Officer at Ultragenyx Pharmaceutical (RARE). Since Jun 17, 2015, Theodore has reported no open-market purchases and 33 sales worth $3.1M on SEC Form 4. In the last 12 months: 3 sales ($57K).
1 sale (1% of the value sold) was made under a Rule 10b5-1 trading plan, which is set up months in advance and runs on a schedule, so it says little about how the insider sees the stock today.
Their filings also include grants and awards (19 filings), shares withheld for taxes (18 filings), option exercises (15 filings), gifts (2 filings). These aren't open-market trades and aren't counted above.
How to read insider trades
Officers, directors and owners of more than 10% of a company must report trades in its stock on SEC Form 4, usually within two business days. Purchases with their own money are the stronger signal: insiders sell for many reasons (taxes, diversification, a house), but buy for one. See every RARE insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.