Form 4: Inhibrx Biosciences CEO Buys Shares
Insider Transaction (Form 4)
Mark Lappe, Chief Executive Officer and a Director of Inhibrx Biosciences, Inc., purchased 10,000 shares of common stock on September 25, 2026.
Summary
- Open-market purchase: acquired 3,324 Common Stock at $98.87 ($328,630) on September 25, 2026; holds 733,872 after (Indirect).
- Open-market purchase: acquired 2,176 Common Stock at $99.60 ($216,727) on September 25, 2026; holds 736,048 after (Indirect).
- Open-market purchase: acquired 1,500 Common Stock at $98.88 ($148,320) on September 28, 2026; holds 737,548 after (Indirect).
- Open-market purchase: acquired 3,000 Common Stock at $101.70 ($305,106) on September 28, 2026; holds 740,548 after (Indirect).
Sentiment
Score: 8
Explanation: StockSavvy.ai views this as a bullish signal: an insider made an open-market purchase of $998,784, committing personal capital to the stock.
Insider Transactions
Mark Lappe — Director, Officer (Chief Executive Officer)
| Date | Transaction | Security | Shares | Price | Value | Held After |
|---|---|---|---|---|---|---|
| 2026-09-25 | Open-market purchase | Common Stock | 3,324 | $99 | $328.6K | 733,872 |
| 2026-09-25 | Open-market purchase | Common Stock | 2,176 | $100 | $216.7K | 736,048 |
| 2026-09-28 | Open-market purchase | Common Stock | 1,500 | $99 | $148.3K | 737,548 |
| 2026-09-28 | Open-market purchase | Common Stock | 3,000 | $102 | $305.1K | 740,548 |
Key Dates
| Date | Description |
|---|---|
| 2026-09-25 | Open-market purchase (3,324 shares) |
| 2026-09-25 | Open-market purchase (2,176 shares) |
| 2026-09-28 | Open-market purchase (1,500 shares) |
| 2026-09-28 | Open-market purchase (3,000 shares) |
Keywords
insider transaction, Form 4, INBX, Inhibrx Biosciences, Inc., bullish, Mark Lappe
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