MAETZOLD DEREK J
Reporting owner on Forms 3, 4 and 5, CIK 1239501.
MAETZOLD DEREK J reported on 1 issuer in 1 filing, the latest a Form 4 filed 2026-10-07.
Issuers
| Issuer | Roles in the latest filing | Filings | Last filed |
|---|---|---|---|
| CSTL · CASTLE BIOSCIENCES INCCIK 1447362 | director, officer (Pres. & Chief Exec. Officer) | 1 | 2026-10-07 |
Transactions and holdings
Every row of the person's Forms 3, 4 and 5, newest first, with the price and the amount owned after the row as filed.
| Security | Date | Code | Shares | Price | Owned after | Filing |
|---|---|---|---|---|---|---|
| CSTL · CASTLE BIOSCIENCES INCCommon Stock | 2026-10-05 | M exercised | +8,165 | $2.39 | 29,644 | Form 4 |
| CSTL · CASTLE BIOSCIENCES INCCommon Stock | 2026-10-05 | S sold | -8,580 | $35.566 | 21,064 | Form 4 |
| CSTL · CASTLE BIOSCIENCES INCCommon Stock | 2026-10-05 | S sold | -3,198 | $35.566 | 8,038 | Form 4 |
| CSTL · CASTLE BIOSCIENCES INCCommon Stock | 2026-10-05 | S sold | -2,718 | $35.566 | 6,832 | Form 4 |
| CSTL · CASTLE BIOSCIENCES INCCommon Stock, holding | 11,256 | Form 4 | ||||
| CSTL · CASTLE BIOSCIENCES INCCommon Stock, holding | 11,256 | Form 4 | ||||
| CSTL · CASTLE BIOSCIENCES INCCommon Stock, holding | 11,256 | Form 4 | ||||
| CSTL · CASTLE BIOSCIENCES INCCommon Stock, holding | 11,256 | Form 4 | ||||
| CSTL · CASTLE BIOSCIENCES INCCommon Stock, holding | 11,963 | Form 4 | ||||
| CSTL · CASTLE BIOSCIENCES INCCommon Stock, holding | 27,862 | Form 4 | ||||
| CSTL · CASTLE BIOSCIENCES INCCommon Stock, holding | 40,935 | Form 4 | ||||
| CSTL · CASTLE BIOSCIENCES INCCommon Stock, holding | 23,216 | Form 4 | ||||
| CSTL · CASTLE BIOSCIENCES INCStock option (right to buy), derivative | 2026-10-05 | M exercised | -8,165 | $0 | 0 | Form 4 |
Filings
The person's Forms 3, 4 and 5, and any 13D or 13G naming it.
| Filing | Subject | Filed | Accepted | Ingested |
|---|---|---|---|---|
| Form 4 0001628280-26-065327 | CASTLE BIOSCIENCES INC | 2026-10-07 |