Howard Horn

Companies

• Ultragenyx Pharmaceutical Inc.Chief financial officer Oct 10, 2023 to now¹
• VIR BiotechnologyChief financial officer Oct 10, 2019 to Feb 24, 2023²

Holdings

Stock this person has reported owning, from the forms officers and directors file with the SEC. See the biggest insider stakes.

Shares held

• VBVIR Biotechnology VIR230,712 shares³$2.4M at $10.23Feb 23, 2023
• UPUltragenyx Pharmaceutical Inc. RARE96,295 shares⁴$1.4M at $14.96Aug 3, 2026

As of each latest filing. The line shows shares held over time.

Recent filings

• Aug 3, 2026Sold 4,696 shares at $24.92 of Ultragenyx Pharmaceutical Inc.⁴
• Jul 1, 2026Sold 4,698 shares at $33.13 of Ultragenyx Pharmaceutical Inc.⁵
• Jun 1, 2026Sold 4,653 shares at $23.77 of Ultragenyx Pharmaceutical Inc.⁶
• May 1, 2026Sold 4,683 shares at $24.90 of Ultragenyx Pharmaceutical Inc.⁷
• Apr 16, 2026Granted 34,674 shares of Ultragenyx Pharmaceutical Inc.⁸
• Apr 1, 2026Sold 4,683 shares at $20.97 of Ultragenyx Pharmaceutical Inc.⁹
• Mar 3, 2026Sold 1,635 shares at $22.40 of Ultragenyx Pharmaceutical Inc.¹⁰
• Mar 2, 2026Sold 3,119 shares at $22.54 of Ultragenyx Pharmaceutical Inc.¹⁰
• Mar 2, 2026Sold 5,290 shares at $22.80 of Ultragenyx Pharmaceutical Inc.¹⁰
• Mar 1, 2026Granted 6,143 shares of Ultragenyx Pharmaceutical Inc.¹⁰
• Feb 2, 2026Sold 3,061 shares at $23.56 of Ultragenyx Pharmaceutical Inc.¹¹
• Jan 2, 2026Sold 3,150 shares at $22.84 of Ultragenyx Pharmaceutical Inc.¹²
• Dec 10, 2025Sold 3,081 shares at $36.38 of Ultragenyx Pharmaceutical Inc.¹³
• Oct 13, 2025Sold 7,942 shares at $31.51 of Ultragenyx Pharmaceutical Inc.¹⁴
• Mar 6, 2025Sold 1,785 shares at $40.40 of Ultragenyx Pharmaceutical Inc.¹⁵
• Mar 1, 2025Granted 15,653 shares of Ultragenyx Pharmaceutical Inc.¹⁶
• Oct 10, 2024Sold 7,465 shares at $52.76 of Ultragenyx Pharmaceutical Inc.¹⁷
• Mar 1, 2024Granted 19,400 shares of Ultragenyx Pharmaceutical Inc.¹⁸
• Oct 9, 2023Granted 80,366 shares of Ultragenyx Pharmaceutical Inc.¹⁹
• Feb 23, 2023Sold 2,248 shares at $25.97 of VIR Biotechnology³
• Feb 17, 2023Sold 2,424 shares at $25.29 of VIR Biotechnology²⁰
• Feb 22, 2022Granted 35,000 shares of VIR Biotechnology²¹
• Feb 17, 2022Sold 2,393 shares at $31.93 of VIR Biotechnology²²