Juvenal Tobin W 4/A

4/A · CASTLE BIOSCIENCES INC · Filed Nov 14, 2025

Form 4/AAmended

Period: 2025-11-11

Chief Commercial Officer

Transactions

Sale
Common Stock
2025-11-11$35.39/sh−500$17,695→ 84,527 total
Exercise/Conversion
Common Stock
2025-11-11$3.38/sh+500$1,690→ 85,027 total
Exercise/Conversion
Common Stock
2025-11-12$3.38/sh+200$676→ 84,727 total
Sale
Common Stock
2025-11-12$35.40/sh−200$7,080→ 84,527 total
Exercise/Conversion
Stock option (right to buy)
2025-11-11−500→ 16,103 total
Exercise: $3.38Exp: 2029-03-12→ Common Stock (500 underlying)
Exercise/Conversion
Stock option (right to buy)
2025-11-12−200→ 15,903 total
Exercise: $3.38Exp: 2029-03-12→ Common Stock (200 underlying)

Holdings

Footnotes (6)

[F1]This transaction was made pursuant to a Rule 10b5-1 plan adopted by the Reporting Person on September 11, 2024.
[F2]This transaction was executed in multiple trades at prices ranging from $35.38 to $35.40, 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.
[F3]This transaction was executed at a price of $35.40. 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.
[F4]Held by Tobin W and Susan M Juvenal Family Revocable Trust of which the Reporting Person and his spouse are the trustees and the Reporting Person, his spouse and their children are the beneficiaries.
[F5]The exercise of the options was inadvertently omitted from the original Form 4 filing and is now being reported in this Amendment.
[F6]The shares subject to the option are fully vested.

Documents

1 file