Ultragenyx Pharmaceutical Inc. 4

Insider Sanders Corazon (Corsee) D. sold 2,000 shares of Ultragenyx Pharmaceutical Inc. common stock at about $25.05 per share on June 15, 2026.

On June 15, 2026, insider Sanders Corazon (Corsee) D. sold 2,000 shares of Ultragenyx Pharmaceutical Inc. common stock at a reported price of $25.05 per share, for an estimated total value of approximately $50,100, leaving the insider with 21,095 shares beneficially owned (including previously reported RSU-based holdings) following the transaction. This appears to be a relatively modest open-market sale in relation to typical insider trading scales, with no indication in the filing of any concurrent option exercise or new award grant. The footnote clarifies that the post-transaction holdings include shares of common stock underlying restricted stock units that are subject to vesting conditions, suggesting that a portion of the insider’s economic exposure remains in the form of unvested equity compensation rather than only fully vested, freely tradable shares.

Filing Facts

CIK

1515673

Ticker

RARE

Form

4

Source Type

sec

Accession

0001796536-26-000007

Alert Tier

5