Form4insider filings, from the source

Insider · CIK 0001856565

Kristen M Oelschlager

Files at: CSTL. On EDGAR ↗

1M3M6M1Y2YAll datashares as filed — not split-adjusted
Open-market buys & salesbuys $0 · 0sales $139k · 1net −$139k
$10k$10k$100k$100k$1M$1MbuyssalesAug 28Sep 2Sep 7Sep 12Sep 18Sep 23Sep 28

Reported trades — common stock

TradeReported (ET)CompanySharesAvg priceTotalOwned afterΔ stakeFlags
Sep 1, 2026 SForm 4 →Sep 3, 4:07 pm EDTCASTLE BIOSCIENCES INCCSTL4,152$33.39$138,64313,356−23.7%10b5-1
Sep 1, 2026 MForm 4 →Sep 3, 4:07 pm EDTCASTLE BIOSCIENCES INCCSTL4,152$3.38$14,03417,508—10b5-1

Reported trades — derivatives (options, RSUs, warrants)

TradeReported (ET)CompanySharesAvg priceTotalOwned afterΔ stakeFlags
Sep 1, 2026 MForm 4 →Sep 3, 4:07 pm EDTCASTLE BIOSCIENCES INCCSTL4,152——12,458—10b5-1