Form4insider filings, from the source

Company · CIK 0002007919 · SIC 2836 — Biological Products, (No Diagnostic Substances) · Nasdaq

Inhibrx Biosciences, Inc. · INBX

Insider activity reported against this company. All insider holders · On EDGAR ↗

1M3M6M1Y2YAll datashares as filed — not split-adjusted
Open-market buys & salesbuys $4.5M · 5sales $279k · 2net $4.2M
$10k$10k$100k$100k$1M$1M$10M$10MbuyssalesJun 28Jul 13Jul 28Aug 13Aug 28Sep 13Sep 28

Reported at this company — common stock

TradeReported (ET)InsiderSharesAvg priceTotalOwned afterΔ stakeFlags
Sep 23, 2026 PForm 4 →Sep 23, 4:59 pm EDTJon Faiz KayyemDirector5,000$100.00$500,000434,360+1.16%
Sep 16, 2026 PForm 4 →Sep 17, 5:46 pm EDTJon Faiz KayyemDirector5,000$100.00$500,000429,360+1.18%
Sep 11, 2026 SForm 4 →Sep 15, 5:52 pm EDTKimberly ManhardDirector1,500$109.03$163,5437,500−16.7%
Sep 8, 2026 SForm 4 →Sep 10, 7:06 pm EDTKimberly ManhardDirector1,000$115.47$115,4689,000−10.0%
Sep 8, 2026 PForm 4 →Sep 8, 5:23 pm EDTJon Faiz KayyemDirector5,000$113.52$567,580424,360+1.19%
Sep 8, 2026 PForm 4 →Sep 8, 4:26 pm EDTDouglas ForsythDirector2,500$114.65$286,617227,064+1.11%
Sep 8, 2026 PForm 4 →Sep 8, 4:04 pm EDTMark LappeChief Executive Officer, Director25,000$105.82$2,645,399730,548+3.54%

Reported at this company — derivatives (options, RSUs, warrants)

No reported derivative activity in this period.