Form 4 Filing for Castle Biosciences Inc. - Officer/Director Transaction

This filing details a transaction by Ellen Goldberg, a director at Castle Biosciences Inc., on May 22, 2026. The transaction involved 13,667 Restricted Stock Units (RSUs) which were disposed of, resulting in 0 shares held post-transaction. Concurrently, 13,667 shares of Common Stock were acquired. The RSUs vest in full on the earlier of the one-year anniversary of May 22, 2026, or the day before the next Annual Meeting of Stockholders. Each RSU represents the right to receive one share of Common Stock. The acquisition of Common Stock was reported with a transaction code "A" and the disposal of RSUs with code "D".