INBX · smart money activity
Who's buying Inhibrx Biosciences, Inc.?
Mark Lappe (Chief Executive Officer): bought $849K on the open market.
Smart money score23#206 of 372 stocks
Latest filingOct 14, 2026
Independent buyers1
Signal sourcesForm 4
Signals against0
INBX insider buying, 13F and 13D filings
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Mark Lappe (Chief Executive Officer): Bought $849K on the open market10.0K shares at ~$84.56, traded 2026-10-14. Now holds 170.0K shares (stake up 6%).
Signals come from SEC filings: Form 4 (insiders, filed within 2 business days), 13F (fund holdings, up to 45 days after quarter end) and Schedule 13D (5%+ activist stakes). This page reports what the filings show; it is not investment advice.