Inhibrx Biosciences, Inc. (INBX)
Nasdaq: INBX · Biological Products, (No Diagnostic Substances) · La Jolla, CA · filing with the SEC since 2024
Who runs Inhibrx Biosciences, Inc.
Officers and directors as they report to the SEC on Forms 3, 4 and 5, named as filedChief executive, as filed
Lappe Mark
Chief Executive Officer. First filing May 2024, latest Oct 14, 2026, 7 filings in all.
Officers reporting now
2
of 6 people with a filing in the last fifteen months
Directors reporting now
4
8 people on the record since 2024
Officerssales are open-market, Oct 14, 2025 to Oct 14, 2026
| Name | Title as filed | First filing | Latest filing | Sales, 12 months |
|---|---|---|---|---|
| Lappe Mark | Chief Executive Officer | May 2024 | Oct 14, 2026 | none |
| Matly David | President | Apr 2025 | Apr 27, 2026 | none |
Directorssales are open-market, Oct 14, 2025 to Oct 14, 2026
| Name | Role | First filing | Latest filing | Sales, 12 months |
|---|---|---|---|---|
| Kayyem Jon Faiz | director | May 2024 | Sep 23, 2026 | none |
| Forsyth Douglas | director | May 2024 | Sep 18, 2026 | none |
| Manhard Kimberly | director | May 2024 | Sep 18, 2026 | 5 · $300,000 |
| Vuori Kristiina Md | director | May 2024 | Sep 18, 2026 | none |
Owners of more than 10% of a classsales are open-market, Oct 14, 2025 to Oct 14, 2026
| Name | Role | First filing | Latest filing | Sales, 12 months |
|---|---|---|---|---|
| Halvorsen Ole Andreas | 10% owner | Jun 2024 | Oct 9, 2025 | none |
| Ott David C. | 10% owner | Jun 2024 | Oct 9, 2025 | none |
| Shabet Rose Sharon | 10% owner | Jun 2024 | Oct 9, 2025 | none |
| Viking Global Investors LP | 10% owner | Jun 2024 | Oct 9, 2025 | none |
| Viking Global Opportunities Gp LLC | 10% owner | Jun 2024 | Oct 9, 2025 | none |
| Viking Global Opportunities Illiquid Investments Sub-Master LP | 10% owner | Jun 2024 | Oct 9, 2025 | none |
| Viking Global Opportunities Parent Gp LLC | 10% owner | Jun 2024 | Oct 9, 2025 | none |
| Viking Global Opportunities Portfolio Gp LLC | 10% owner | Jun 2024 | Oct 9, 2025 | none |
Earlier names on the record3, newest filing first
A person is listed as reporting now after a filing in the last fifteen months. The record shows when someone last filed; it does not say why they stopped. Each name links to the filings on sec.gov.