Inhibrx Biosciences, Inc (INBX) insider trading
Every open-market stock purchase and sale by Inhibrx Biosciences, Inc executives, directors, large shareholders and members of Congress, from SEC Form 4 filings. Sector: Other.
Insider activity at a glance
- Mark Lappe (CEO) and 2 others bought $5.5M in the last 90 days.
- Kimberly Manhard (Director) sold $279K in the last 90 days.
Last 12 months: insiders bought $5.5M (6 buys) and sold $11.6M (3 sales). Last close $99.61 on Sep 25, 2026.
Recent INBX insider trades
| Date | Insider | Trade | Value |
|---|---|---|---|
| Sep 28, 2026 | Mark Lappe (CEO) | Bought | $305K |
| Sep 28, 2026 | Mark Lappe (CEO) | Bought | $148K |
| Sep 25, 2026 | Mark Lappe (CEO) | Bought | $329K |
| Sep 25, 2026 | Mark Lappe (CEO) | Bought | $217K |
| Sep 23, 2026 | Jon Faiz Kayyem (Director) | Bought | $500K |
| Sep 16, 2026 | Jon Faiz Kayyem (Director) | Bought | $500K |
| Sep 15, 2026 | Kimberly Manhard (Director) | Sold | $52.5K |
| Sep 14, 2026 | Kimberly Manhard (Director) | Sold | $55.1K |
| Sep 11, 2026 | Kimberly Manhard (Director) | Sold | $55.9K |
| Sep 9, 2026 | Kimberly Manhard (Director) | Sold | $57.9K |
| Sep 8, 2026 | Mark Lappe (CEO) | Bought | $1.1M |
| Sep 8, 2026 | Mark Lappe (CEO) | Bought | $665K |
| Sep 8, 2026 | Mark Lappe (CEO) | Bought | $585K |
| Sep 8, 2026 | Jon Faiz Kayyem (Director) | Bought | $568K |
| Sep 8, 2026 | Douglas Forsyth (Director) | Bought | $287K |
| Sep 8, 2026 | Mark Lappe (CEO) | Bought | $136K |
| Sep 8, 2026 | Mark Lappe (CEO) | Bought | $118K |
| Sep 8, 2026 | Kimberly Manhard (Director) | Sold | $57.6K |
| Sep 8, 2026 | Mark Lappe (CEO) | Bought | $54.1K |
| Jun 3, 2026 | Kristiina Vuori MD (Director) | Bought (not open market) | — |
| Jun 3, 2026 | Douglas Forsyth (Director) | Bought (not open market) | — |
| Jun 3, 2026 | Jon Faiz Kayyem (Director) | Bought (not open market) | — |
| Jun 3, 2026 | Douglas Forsyth (Director) | Bought (not open market) | — |
| Jun 3, 2026 | Kimberly Manhard (Director) | Bought (not open market) | — |
| Jun 3, 2026 | Kristiina Vuori MD (Director) | Bought (not open market) | — |
Who's trading INBX
- Mark Lappe, CEO: bought $3.6M (10 buys), last Sep 28, 2026
- Jon Faiz Kayyem, Director: bought $1.6M (3 buys), last Sep 23, 2026
- Kimberly Manhard, Director: sold $279K (5 sales), last Sep 15, 2026
- Douglas Forsyth, Director: bought $287K (1 buy), last Sep 8, 2026
- Kristiina Vuori MD, Director: other filings, last Jun 3, 2026
- David Matly, President: other filings, last Apr 24, 2026
- Viking Global Investors LP, Insider: sold $11.3M (3 sales), last Oct 7, 2025
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