Form 4 for CSTL CASTLE BIOSCIENCES INC
Accepted 2025-11-06 00:00:00 ET · period of report 2025-11-04 · accession 0001628280-25-050169 · SEC index · Original document
Summary rows
Aggregated the way they appear in lists: one row per insider, transaction code and security table.
| X | Filed | Traded | Ticker | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| M | 2025-11-06 | 2025-11-04+ | CSTL | MAETZOLD DEREK J | Pres, Chief Exec. Off, Dir | S - Sale | $30.84 | -9,373 | 56.5K | -14% | -$289.1K |
Purchase Sale Sale after option exercise All abbreviations
Every reported transaction
| # | Table | Security | Date | Code | A/D | Shares | Price | Owned after | Own | Exercise / expiry | Underlying | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Common | Common Stock | 2025-11-05 | S | D | 2,678 | $31.85 | 53,615 | D | — | — | (F4) This transaction was executed in multiple trades at prices ranging from $31.520 to $32.090, 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. |
| 2 | Common | Common Stock | 2025-11-04 | S | D | 237 | $31.12 | 56,293 | D | — | — | (F3) This transaction was executed in multiple trades at prices ranging from $31.115 to $31.120, 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. |
| 3 | Common | Common Stock | 2025-11-04 | S | D | 6,458 | $30.41 | 56,530 | D | — | — | (F2) This transaction was executed in multiple trades at prices ranging from $30.000 to $30.990, 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. |