Follow the people · Insider
Howard Horn
Howard Horn files insider transactions with the SEC as a chief financial officer of Ultragenyx Pharmaceutical (RARE). We hold 9 disclosed purchases and sales filed since 11 October 2019, 2 of them in the last 90 days.
- Files forRARE
- Disclosed buys and sells9 in all, 2 in the last 90 days
- Last disclosure4 August 2026
Positions held
2 posts we hold — a term names its own dates; a run of filings only says when they filed- Filed 9 October 2023 — 3 August 2026Chief Financial Officer · Ultragenyx Pharmaceutical (RARE)29 Form 4 lines · source: SEC Form 4
- Filed 10 October 2019 — 23 February 2023CFO · Vir Biotechnology (VIR)18 Form 4 lines · source: SEC Form 4
Everything they disclosed
47 entries, newest first — one per disclosure report, one per Form 4 line- ▼ sold on the open market 4,696 shares of Ultragenyx PharmaceuticalSEC Form 44 August 2026Common Stock · traded 3 August 2026 · filed 4 August 2026
- ▼ sold on the open market 4,698 shares of Ultragenyx PharmaceuticalSEC Form 46 July 2026Common Stock · traded 1 July 2026 · filed 6 July 2026
- ▼ sold on the open market 4,653 shares of Ultragenyx PharmaceuticalSEC Form 41 June 2026Common Stock · traded 1 June 2026 · filed 1 June 2026
- ▼ sold on the open market 4,683 shares of Ultragenyx PharmaceuticalSEC Form 44 May 2026Common Stock · traded 1 May 2026 · filed 4 May 2026
- was granted 34,674 shares of Ultragenyx PharmaceuticalSEC Form 420 April 2026Common Stock · traded 16 April 2026 · filed 20 April 2026
- was granted 59,952 shares of Ultragenyx Pharmaceutical (a derivative holding)SEC Form 420 April 2026Stock Option (Right to Buy) · traded 16 April 2026 · filed 20 April 2026
- ▼ sold on the open market 4,683 shares of Ultragenyx PharmaceuticalSEC Form 42 April 2026Common Stock · traded 1 April 2026 · filed 2 April 2026
- was granted 6,143 shares of Ultragenyx PharmaceuticalSEC Form 43 March 2026Common Stock · traded 1 March 2026 · filed 3 March 2026
- ▼ sold on the open market 5,290 shares of Ultragenyx PharmaceuticalSEC Form 43 March 2026Common Stock · traded 2 March 2026 · filed 3 March 2026
- ▼ sold on the open market 3,119 shares of Ultragenyx PharmaceuticalSEC Form 43 March 2026Common Stock · traded 2 March 2026 · filed 3 March 2026
- ▼ sold on the open market 1,635 shares of Ultragenyx PharmaceuticalSEC Form 43 March 2026Common Stock · traded 3 March 2026 · filed 3 March 2026
- was granted 6,143 shares of Ultragenyx PharmaceuticalSEC Form 43 March 2026Common Stock · traded 1 March 2026 · filed 3 March 2026
- ▼ sold on the open market 5,290 shares of Ultragenyx PharmaceuticalSEC Form 43 March 2026Common Stock · traded 2 March 2026 · filed 3 March 2026
- ▼ sold on the open market 3,119 shares of Ultragenyx PharmaceuticalSEC Form 43 March 2026Common Stock · traded 2 March 2026 · filed 3 March 2026
- ▼ sold on the open market 1,635 shares of Ultragenyx PharmaceuticalSEC Form 43 March 2026Common Stock · traded 3 March 2026 · filed 3 March 2026
- ▼ sold on the open market 3,061 shares of Ultragenyx PharmaceuticalSEC Form 43 February 2026Common Stock · traded 2 February 2026 · filed 3 February 2026
- ▼ sold on the open market 3,061 shares of Ultragenyx PharmaceuticalSEC Form 43 February 2026Common Stock · traded 2 February 2026 · filed 3 February 2026
- ▼ sold on the open market 3,150 shares of Ultragenyx PharmaceuticalSEC Form 45 January 2026Common Stock · traded 2 January 2026 · filed 5 January 2026
- ▼ sold on the open market 3,150 shares of Ultragenyx PharmaceuticalSEC Form 45 January 2026Common Stock · traded 2 January 2026 · filed 5 January 2026
- ▼ sold on the open market 3,081 shares of Ultragenyx PharmaceuticalSEC Form 411 December 2025Common Stock · traded 10 December 2025 · filed 11 December 2025
- ▼ sold on the open market 7,942 shares of Ultragenyx PharmaceuticalSEC Form 414 October 2025Common Stock · traded 13 October 2025 · filed 14 October 2025
- ▼ sold on the open market 1,785 shares of Ultragenyx PharmaceuticalSEC Form 410 March 2025Common Stock · traded 6 March 2025 · filed 10 March 2025
- was granted 28,160 shares of Ultragenyx Pharmaceutical (a derivative holding)SEC Form 44 March 2025Stock Option (Right to Buy) · traded 1 March 2025 · filed 4 March 2025
- was granted 15,653 shares of Ultragenyx PharmaceuticalSEC Form 44 March 2025Common Stock · traded 1 March 2025 · filed 4 March 2025
- ▼ sold on the open market 7,465 shares of Ultragenyx PharmaceuticalSEC Form 411 October 2024Common Stock · traded 10 October 2024 · filed 11 October 2024
- was granted 34,200 shares of Ultragenyx Pharmaceutical (a derivative holding)SEC Form 45 March 2024Stock Option (Right to Buy) · traded 1 March 2024 · filed 5 March 2024
- was granted 19,400 shares of Ultragenyx PharmaceuticalSEC Form 45 March 2024Common Stock · traded 1 March 2024 · filed 5 March 2024
- was granted 140,469 shares of Ultragenyx Pharmaceutical (a derivative holding)SEC Form 410 October 2023Stock Option (Right to Buy) · traded 9 October 2023 · filed 10 October 2023
- was granted 80,366 shares of Ultragenyx PharmaceuticalSEC Form 410 October 2023Common Stock · traded 9 October 2023 · filed 10 October 2023
- ▼ sold on the open market 2,248 shares of Vir BiotechnologySEC Form 424 February 2023Common Stock · traded 23 February 2023 · filed 24 February 2023
- ▼ sold on the open market 2,424 shares of Vir BiotechnologySEC Form 421 February 2023Common Stock · traded 17 February 2023 · filed 21 February 2023
- was granted 50,000 shares of Vir Biotechnology (a derivative holding)SEC Form 424 February 2022Stock Option (Right to Buy) · traded 22 February 2022 · filed 24 February 2022
- was granted 35,000 shares of Vir BiotechnologySEC Form 424 February 2022Common Stock · traded 22 February 2022 · filed 24 February 2022
- ▼ sold on the open market 2,393 shares of Vir BiotechnologySEC Form 422 February 2022Common Stock · traded 17 February 2022 · filed 22 February 2022
- was granted 50,000 shares of Vir Biotechnology (a derivative holding)SEC Form 418 February 2021Stock Option (Right to Buy) · traded 16 February 2021 · filed 18 February 2021
- was granted 25,000 shares of Vir BiotechnologySEC Form 418 February 2021Common Stock · traded 16 February 2021 · filed 18 February 2021
- ▼ sold on the open market 30,000 shares of Vir BiotechnologySEC Form 415 July 2020Common Stock · traded 13 July 2020 · filed 15 July 2020
- ▼ sold on the open market 9,100 shares of Vir BiotechnologySEC Form 42 July 2020Common Stock · traded 1 July 2020 · filed 2 July 2020
- ▼ sold on the open market 500 shares of Vir BiotechnologySEC Form 42 July 2020Common Stock · traded 1 July 2020 · filed 2 July 2020
- ▼ sold on the open market 400 shares of Vir BiotechnologySEC Form 42 July 2020Common Stock · traded 1 July 2020 · filed 2 July 2020
- ▼ sold on the open market 10,000 shares of Vir BiotechnologySEC Form 42 July 2020Common Stock · traded 2 July 2020 · filed 2 July 2020
- ▼ sold on the open market 30,000 shares of Vir BiotechnologySEC Form 426 June 2020Common Stock · traded 25 June 2020 · filed 26 June 2020
- ▼ sold on the open market 10,000 shares of Vir BiotechnologySEC Form 423 June 2020Common Stock · traded 19 June 2020 · filed 23 June 2020
- ▼ sold on the open market 3,286 shares of Vir BiotechnologySEC Form 42 June 2020Common Stock · traded 1 June 2020 · filed 2 June 2020
- ▼ sold on the open market 6,714 shares of Vir BiotechnologySEC Form 42 June 2020Common Stock · traded 1 June 2020 · filed 2 June 2020
- was granted 60,000 shares of Vir Biotechnology (a derivative holding)SEC Form 427 February 2020Stock Option (Right to Buy) · traded 25 February 2020 · filed 27 February 2020
- was granted 111,111 shares of Vir Biotechnology (a derivative holding)SEC Form 411 October 2019Stock Option (Right to Buy) · traded 10 October 2019 · filed 11 October 2019
Positions come from the unitedstates/congress-legislators roster, the Office of Government Ethics and the SEC’s Form 4 index. Every disclosed line names its own source and links the document the government published; we print what the filing says and never a price we did not read from it. Headlines and links come from the GDELT Global Knowledge Graph — the story stays with the publisher. The portrait, where we have one, is the public-domain Congressional Bioguide photograph.