INBX insider trades & Congress trades
Inhibrx Biosciences, Inc.: public insider filings and Congress disclosures, in one place.
Bourse has recorded 17 open-market insider transactions in Inhibrx Biosciences, Inc. (INBX) (16 purchases with code P and 1 sales with code S), the most recent on October 14, 2026.
In the last 90 days: 16 purchases by 3 insiders ($5.29M) and 1 sale by 1 ($53K).
The most recent insider buying cluster (three or more different insiders buying within 14 days) ran from September 8, 2026 to September 8, 2026, with 3 insiders.
Insider transactions
SEC Form 4, open-market purchases (P) and sales (S) only. Awards, option exercises and tax withholding are excluded. “After” shows the stock’s return over the month following the trade, where available.
| Date | Insider | Role | Type | Shares | Price | Value | After 1M |
|---|---|---|---|---|---|---|---|
| Oct 14, 2026 | Lappe Mark | Chief Executive Officer | Buy | 2,470 | $84.07 | $208K | – |
| Oct 14, 2026 | Lappe Mark | Chief Executive Officer | Buy | 2,470 | $85.00 | $210K | – |
| Oct 14, 2026 | Lappe Mark | Chief Executive Officer | Buy | 100 | $85.76 | $9K | – |
| Oct 14, 2026 | Lappe Mark | Chief Executive Officer | Buy | 2,449 | $84.07 | $206K | – |
| Oct 14, 2026 | Lappe Mark | Chief Executive Officer | Buy | 2,451 | $85.00 | $208K | – |
| Sep 28, 2026 | Lappe Mark | Chief Executive Officer | Buy | 3,000 | $101.70 | $305K | – |
| Sep 28, 2026 | Lappe Mark | Chief Executive Officer | Buy | 1,500 | $98.88 | $148K | – |
| Sep 23, 2026 | Kayyem Jon Faiz | – | Buy | 5,000 | $100.00 | $500K | – |
| Sep 15, 2026 | Manhard Kimberly | EVP, Drug Development | Sell | 500 | $105.05 | $53K | – |
| Sep 8, 2026 | Lappe Mark | Chief Executive Officer | Buy | 6,605 | $100.64 | $665K | – |
| Sep 8, 2026 | Kayyem Jon Faiz | – | Buy | 5,000 | $113.52 | $568K | – |
| Sep 8, 2026 | Forsyth Douglas | – | Buy | 2,500 | $114.65 | $287K | – |
| Sep 8, 2026 | Lappe Mark | Chief Executive Officer | Buy | 9,681 | $112.28 | $1.09M | – |
| Sep 8, 2026 | Lappe Mark | Chief Executive Officer | Buy | 1,219 | $111.88 | $136K | – |
| Sep 8, 2026 | Lappe Mark | Chief Executive Officer | Buy | 500 | $108.24 | $54K | – |
| Sep 8, 2026 | Lappe Mark | Chief Executive Officer | Buy | 1,100 | $107.12 | $118K | – |
| Sep 8, 2026 | Lappe Mark | Chief Executive Officer | Buy | 5,895 | $99.29 | $585K | – |
Data as of October 22, 2026. Public filings only. A purchase or sale by a politician or an insider does not by itself imply any wrongdoing.
New to these filings? Read how to read a Form 4, how Congress trades are disclosed and what insider cluster buying means. Sources and limits are on the Methodology page.
See these filings as they land
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