Horn Howard 4

What Happened

• Horn Howard, Chief Financial Officer of Ultragenyx Pharmaceutical Inc. (RARE), disposed of 3,061 shares on Feb 2, 2026. The shares were sold at $23.56 per share, for total proceeds of $72,117. The Form 4 reporting this transaction was filed on Feb 3, 2026.

Key Details

• Transaction date and price: Feb 2, 2026 — sale at $23.56 per share
• Shares sold: 3,061; Total proceeds: $72,117
• Transaction type/code: Sale (S) — listed as open market or private sale
• Shares owned after transaction: Not specified in the information provided in this summary
• Footnote: F1 states the reported shares include previously reported shares underlying RSUs that remain subject to certain vesting conditions
• Filing timeliness: Form 4 filed the next day (Feb 3, 2026); this appears to be timely under standard reporting rules
• No 10b5-1 plan, gift, option exercise, or tax-withholding details were noted in the provided data

Context

• A sale by an executive is a disposal of shares and can be routine (for diversification, tax or personal reasons). Sales do not, by themselves, indicate management’s view of the company’s prospects. Purchases by insiders tend to carry more weight for signals of confidence.