Form 4 Filing for CASTLE BIOSCIENCES INC

Kristen M. Oelschlager, Chief Operating Officer of CASTLE BIOSCIENCES INC, reported the sale of 8,186 shares of Common Stock on July 1, 2026, at an average price of $24.40 per share. This transaction was executed as part of a Rule 10b5-1 trading plan. Following this sale, Oelschlager directly owns 22,274 shares. Additionally, she was involved in another sale of 400 shares of Common Stock on the same day, with an average price of $24.78 per share, also under a Rule 10b5-1 plan, leaving her with 21,874 directly owned shares. The filing also notes that 97,251 shares are held indirectly through The Fritz Shorter Trust, for which Oelschlager and her spouse serve as trustees and beneficiaries.