Castle Biosciences (CSTL) insider trading in the last 6 months

2 insiders sold $1.6M. No buys.

Quality Score8Average

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Form 4 filings, newest first

SellKristen M. Oelschlager$412KChief Operating Officerat $33.69 on Aug 24, filed Aug 26

SellKristen M. OelschlagerChief Operating Officer$412Kat $33.69 on Aug 24, filed Aug 26

SellKristen M. Oelschlager$245KChief Operating Officerat $34.26 on Aug 25, filed Aug 26

SellKristen M. OelschlagerChief Operating Officer$245Kat $34.26 on Aug 25, filed Aug 26

SellKristen M. Oelschlager$181KChief Operating Officerat $34.64 on Aug 25, filed Aug 26

SellKristen M. OelschlagerChief Operating Officer$181Kat $34.64 on Aug 25, filed Aug 26

From SEC Form 4s, the newest filed Aug 26, 2026 · Insiders have 2 business days to file a trade

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Who files at Castle Biosciences

Insider trades by person

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Questions about CSTL's insider trades

As of Nov 10, 2026: Castle Biosciences (CSTL) has 4 insider filings on record in the last 6 months, the newest filed Aug 26, 2026. Its Quality Score is 8 (Average). Scores as of 11:07 PM ET, 15 minutes behind.

Are CSTL insiders buying or selling?

2 insiders sold $1.6M across 4 filings in the last 6 months. No open-⁠market buys on record. The newest filing: Kristen M. Oelschlager, Chief Operating Officer, sold $412K on Aug 24, 2026.

Who are CSTL's biggest insider sellers?

By the dollars of their sales in the last 6 months: Kristen M. Oelschlager (Chief Operating Officer), 3 sales; Frank Stokes (Chief Financial Officer), 1 sale.

When did a CSTL insider last buy?

No CSTL insider bought shares on the open market in the last 6 months, as filed on Form 4. The newest filing is a sale by Kristen M. Oelschlager on Aug 24, 2026.

Castle Biosciences's page has its Quality Score, its chart, and its earnings. More in Healthcare and Diagnostics.

Castle Biosciences (CSTL) insider trading in the last 6 months

Form 4 filings, newest first

Who files at Castle Biosciences

Questions about CSTL's insider trades

Every insider trade, with its stock's score.