Castle Biosciences Inc (CSTL)

Director MAETZOLD DEREK J 🟡 adjusted position in 19.3K shares (2 derivative) of CASTLE BIOSCIENCES INC (CSTL) at $38.25 Transaction Date: Dec 09, 2025 | Filing ID: 056631

Register to leave comments

  • News bot Dec. 11, 2025, 11:50 p.m.

    🔍 MAETZOLD DEREK J (Director)

    Company: CASTLE BIOSCIENCES INC (CSTL)

    Report Date: 2025-12-09

    Transaction Summary:

    • Total transactions: 15
    • Derivative instruments: 2
    • Holdings reported: 9
    • Total shares acquired: 48,919
    • Total shares sold: 68,170
    • Total shares held: 261,372

    Detailed Transactions and Holdings:

    • Acquired 33,495 shares of Common Stock (Direct)
      Date: 2025-12-09 | Code: M | equity_swap_involved: 0 | shares_owned_after: 71,042.00 | transaction_form_type: 4 | Footnotes: F1
    • Sold 13,181 shares of Common Stock at $38.25 per share (Direct)
      Date: 2025-12-09 | Code: F | equity_swap_involved: 0 | shares_owned_after: 57,861.00 | transaction_form_type: 4
    • Acquired 15,424 shares of Common Stock (Direct)
      Date: 2025-12-10 | Code: M | equity_swap_involved: 0 | shares_owned_after: 73,285.00 | transaction_form_type: 4 | Footnotes: F1
    • Sold 6,070 shares of Common Stock at $38.02 per share (Direct)
      Date: 2025-12-10 | Code: F | equity_swap_involved: 0 | shares_owned_after: 67,215.00 | transaction_form_type: 4
    • Holds 0 shares of Common Stock (Direct)
      Date: 2025-12-09 | Code: H | nature_of_ownership: By The Maetzold Descendants 2020 Trust | shares_owned_after: 52,923.00 | Footnotes: F2
    • Holds 0 shares of Common Stock (Direct)
      Date: 2025-12-09 | Code: H | nature_of_ownership: By Derek Maetzold 2020 Irrevocable Trust | shares_owned_after: 44,986.00 | Footnotes: F3
    • Holds 0 shares of Common Stock (Direct)
      Date: 2025-12-09 | Code: H | nature_of_ownership: By The Maetzold 2018 Remainder Trust FBO Emily Carol Kirk | shares_owned_after: 3,618.00 | Footnotes: F4
    • Holds 0 shares of Common Stock (Direct)
      Date: 2025-12-09 | Code: H | nature_of_ownership: By The Maetzold 2018 Remainder Trust FBO Hannah Elizabeth Maetzold | shares_owned_after: 3,615.00 | Footnotes: F5
    • Holds 0 shares of Common Stock (Direct)
      Date: 2025-12-09 | Code: H | nature_of_ownership: By The Maetzold 2018 Remainder Trust FBO John Derek Maetzold | shares_owned_after: 3,615.00 | Footnotes: F6
    • Holds 0 shares of Common Stock (Direct)
      Date: 2025-12-09 | Code: H | nature_of_ownership: By The Maetzold 2018 Remainder Trust FBO Peter Douglas Maetzold | shares_owned_after: 3,615.00 | Footnotes: F7
    • Holds 0 shares of Common Stock (Direct)
      Date: 2025-12-09 | Code: H | nature_of_ownership: By DJM Grantor Retained Annuity Trust No. 5 | shares_owned_after: 85,959.00 | Footnotes: F8
    • Holds 0 shares of Common Stock (Direct)
      Date: 2025-12-09 | Code: H | nature_of_ownership: By DJM Grantor Retained Annuity Trust No. 6 | shares_owned_after: 18,718.00 | Footnotes: F9
    • Holds 0 shares of Common Stock (Direct)
      Date: 2025-12-09 | Code: H | nature_of_ownership: By DJM Grantor Retained Annuity Trust No. 7 | shares_owned_after: 44,323.00 | Footnotes: F10
    • Sold 33,495 shares of Restricted Stock Units (Derivative)
      Date: 2025-12-09 | Code: M | equity_swap_involved: 0 | shares_owned_after: 33,496.00 | transaction_form_type: 4 | Footnotes: F1, F11, F11
    • Sold 15,424 shares of Restricted Stock Units (Derivative)
      Date: 2025-12-10 | Code: M | equity_swap_involved: 0 | transaction_form_type: 4 | Footnotes: F1, F12, F12

    Footnotes:

    • F1: Each Restricted Stock Unit ("RSU") represents the right to receive one share of the Issuer's Common Stock.
    • F2: Held by The Maetzold Descendants 2020 Trust of which the Reporting Person's spouse is the trustee and the Reporting Person's spouse and their children are beneficiaries.
    • F3: Held by Derek Maetzold 2020 Irrevocable Trust of which the Reporting Person is the trustee and his children are beneficiaries.
    • F4: Held by The Maetzold 2018 Remainder Trust FBO Emily Carol Kirk of which the Reporting Person is the trustee and his child is the beneficiary.
    • F5: Held by The Maetzold 2018 Remainder Trust FBO Hannah Elizabeth Maetzold of which the Reporting Person is the trustee and his child is the beneficiary.
    • F6: Held by The Maetzold 2018 Remainder Trust FBO John Derek Maetzold of which the Reporting Person is the trustee and his child is the beneficiary.
    • F7: Held by The Maetzold 2018 Remainder Trust FBO Peter Douglas Maetzold of which the Reporting Person is the trustee and his child is the beneficiary.
    • F8: Held by DJM Grantor Retained Annuity Trust No. 5 of which the Reporting Person is the trustee and beneficiary.
    • F9: Held by DJM Grantor Retained Annuity Trust No. 6 of which the Reporting Person is the trustee and the beneficiaries are The Maetzold 2018 Remainder Trust FBO John Derek Maetzold, The Maetzold 2018 Remainder Trust FBO Emily Carol Kirk, The Maetzold 2018 Remainder Trust FBO Peter Douglas Maetzold and The Maetzold 2018 Remainder Trust FBO Hannah Elizabeth Maetzold.
    • F10: Held by DJM Grantor Retained Annuity Trust No. 7 of which the Reporting Person is the trustee and beneficiary.
    • F11: On December 9, 2022, the Reporting Person was granted 133,983 RSUs which vest in four equal installments beginning on December 9, 2023.
    • F12: On December 10, 2021, the Reporting Person was granted 61,698 RSUs which vest in four equal installments beginning on December 10, 2022.