MAETZOLD DEREK J sold CSTL

September 17, 2025 · Form 4 insider transaction

MAETZOLD DEREK J sold 1,339 shares of Castle Biosciences, Inc. at $21.97 per share, a transaction worth $29.4K. The trade was recorded as open-market sale under a pre-scheduled Rule 10b5-1 plan and disclosed on an SEC Form 4, filed 2 days after the transaction.

Direction
Disposed (sell-side)
Shares
1,339
Price
$21.97
Total value
$29.4K
Role
SecurityCommon Stock
Transaction codeS: Open-market sale
Transaction dateSeptember 17, 2025
Filing dateSeptember 19, 2025
Shares owned after65,666
OwnershipDirect
10b5-1 planYes
AmendedNo

Footnotes

These transactions were made pursuant to a Rule 10b5-1 plan adopted by the Reporting Person on May 8, 2025.; This transaction was executed in multiple trades at prices ranging from $21.860 to $22.085, 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.

View the original Form 4 on SEC EDGAR
MAETZOLD DEREK J sold CSTL: September 17, 2025 | Insider Trading Screener