Lappe Mark: insider buys
Every open-market stock purchase reported by Lappe Mark to the SEC on Form 4.
Total bought$4.49M
Purchases3
Companies1
Last purchase filedOct 14, 2026
Return on these buys-28%
Lappe Mark has made 3 open-market purchases worth $4.49M in 1 company since Sep 8, 2026, according to SEC Form 4 filings. The most recent was filed on Oct 14, 2026: 10,040 shares of INBX at $84.56 (Chief Executive Officer, Director), worth $848.98K. The largest was $2.65M of INBX on Sep 8, 2026. Taken together, these purchases are down 28% at the latest closing prices (split-adjusted, weighted by amount).
Companies Lappe Mark bought
| Ticker | Company | Role | Buys | Total | Since buy | Last filed |
|---|---|---|---|---|---|---|
| INBX | Inhibrx Biosciences, Inc. | Chief Executive Officer, Director | 3 | $4.49M | -28% | Oct 14 |
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| Filed | Stock | Insider | Value | Shares | Price | Since buy | Stake | Trade | |
|---|---|---|---|---|---|---|---|---|---|
| Oct 14 | INBXInhibrx Biosciences, Inc. | Lappe MarkChief Executive Officer, Director | $848.98K | 10,040 | $84.56 | -15% | +6% | Oct 14 | SEC |
| Sep 28 | INBXInhibrx Biosciences, Inc. | Lappe MarkChief Executive Officer, Director | $998.79K | 10,000 | $99.88 | -28% | +1% | Sep 25 | SEC |
| Sep 8 | INBXInhibrx Biosciences, Inc. | Lappe MarkChief Executive Officer, Director | $2.65M | 25,000 | $105.81 | -32% | +4% | Sep 8 | SEC |