SEC Form 4 · accession 0001628280-26-059272
CASTLE BIOSCIENCES INC · CSTL
Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗
Reporting owner
Tobin W Juvenal
Officer — Chief Commercial Officer
Period of report
Aug 25, 2026
Accepted (ET)
Aug 27, 2026 · 4:38 pm EDT
Rule 10b5-1 plan
yes — trade under a plan
Issuer CIK
0001447362
Table I — non-derivative securities
| Security | Date | Code | Shares | Price | A/D | Owned after | D/I | Nature of ownership |
|---|---|---|---|---|---|---|---|---|
| Common StockF2 | Aug 25, 2026 | S | 9,050 | $35.04 | D | 66,914 | D |
Table II — derivative securities
No Table II lines on this filing.
Explanation of responses
- F1This transaction was made pursuant to a Rule 10b5-1 plan adopted by the Reporting Person on December 10, 2025.
- F2This transaction was executed in multiple trades at prices ranging from $35.00 to $35.14, inclusive. The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.