InsiderTrades

Form 4 for CSTL CASTLE BIOSCIENCES INC

Accepted 2025-08-29 00:00:00 ET · period of report 2025-08-27 · accession 0001856565-25-000007 · 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
2025-08-29 2025-08-27 CSTL Oelschlager Kristen M COO S - Sale $22.02 -12.7K 141.1K -8% -$279.1K

Purchase Sale Sale after option exercise All abbreviations

Every reported transaction

#TableSecurityDateCodeA/DSharesPriceOwned afterOwnExercise / expiryUnderlyingFootnotes
1 Common Common Stock 2025-08-27 S D 12,677 $22.02 141,116 D — — (F2) This transaction was executed in multiple trades at prices ranging from $22.000 to 22.145, 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.