July 31, 2026 · Form 4 insider transaction
MAETZOLD DEREK J bought 6,480 shares of Castle Biosciences, Inc. at $2.39 per share, a transaction worth $15.5K. The trade was recorded as option exercise under a pre-scheduled Rule 10b5-1 plan and disclosed on an SEC Form 4, filed 4 days after the transaction.
These transactions were made pursuant to a Rule 10b5-1 plan adopted by the Reporting Person on December 3, 2025.; Reflects the July 30, 2026 transfers of 6,755 shares of common stock from DJM Grantor Retained Annuity Trust No. 6 and 16,461 shares from DJM Grantor Retained Annuity Trust No. 7 to the Reporting Person's direct holdings, followed by the transfer of those shares to DJM Grantor Retained Annuity Trust No. 9.