SEC Form 4 · accession 0001628280-26-047286
CASTLE BIOSCIENCES INC · CSTL
Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗
Reporting owner
Kristen M Oelschlager
Officer — Chief Operating Officer
Period of report
Jul 1, 2026
Accepted (ET)
Jul 6, 2026 · 4:24 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 | Jul 1, 2026 | S | 8,186 | $24.40 | D | 22,274 | D | |
| Common StockF3 | Jul 1, 2026 | S | 400 | $24.78 | D | 21,874 | D | |
| Common StockF4 | holding | — | — | — | 97,251 | I | The Fritz Shorter Trust |
Table II — derivative securities
No Table II lines on this filing.
Explanation of responses
- F1These transactions were made pursuant to a Rule 10b5-1 plan adopted by the Reporting Person, on March 17, 2026.
- F2This transaction was executed in multiple trades at prices ranging from $23.73 to $24.72, 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.
- F3This transaction was executed in multiple trades at prices ranging from $24.77 to $24.79, 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.
- F4Held by the Fritz Shorter Trust of which the Reporting Person and her spouse are the trustees and beneficiaries.