Form 4: Ultragenyx Officer Sells Shares for Tax Obligations

Ultragenyx Pharmaceutical Inc.'s SVP, Chief Accounting Officer, Theodore Alan Huizenga, disposed of shares to cover tax withholdings related to RSU vesting.

Summary

• Theodore Alan Huizenga, SVP, Chief Accounting Officer of Ultragenyx Pharmaceutical Inc., reported transactions involving common stock.
• On March 2, 2026, 148 shares were surrendered to the Issuer at a price of $23.39 per share to cover required tax withholdings due to the vesting of Restricted Stock Units (RSUs).
• Additionally, 1,632 shares were sold on March 2, 2026, at a weighted average price of $22.80 per share, with individual transaction prices ranging from $22.54 to $23.11, also to satisfy tax withholdings from RSU vesting.
• Following these transactions, Mr. Huizenga beneficially owns 48,670 shares of Ultragenyx common stock, which includes previously reported shares underlying RSUs subject to certain vesting conditions.

Sentiment

Score: 5

Explanation: StockSavvy.ai views this as a neutral event. The transactions are routine, non-discretionary sales for tax purposes related to RSU vesting and do not reflect a change in the insider's investment sentiment or the company's fundamentals.

Future Outlook

NA

Industry Context

StockSavvy.ai notes that Form 4 filings are standard disclosures for insider transactions and do not typically reflect broader industry trends. These transactions are routine for executives receiving equity compensation.

Key Dates

Recommendation

This Form 4 filing details routine, non-discretionary transactions by an executive to cover tax liabilities associated with RSU vesting. Such transactions do not provide new fundamental information about Ultragenyx Pharmaceutical Inc. or signal a change in the executive's confidence in the company. Therefore, a seasoned investor would likely maintain their current position, as this filing does not warrant a change in investment thesis.

Keywords

Ultragenyx Pharmaceutical, RARE, Insider Trading, Form 4, RSU Vesting, Tax Withholding, Theodore Alan Huizenga