Cole G Bradley 4

What Happened

• Cole G. Bradley, a director of Castle Biosciences (CSTL), exercised stock options and sold shares on March 5, 2026. He exercised 4,748 option shares at $3.38 per share (cost $16,048) and sold 4,748 of those shares at a weighted-average $28.44 for $135,033. He also sold an additional 2,655 shares at a weighted-average $28.51 for $75,694. Total gross proceeds from the sales were about $210,727.
• These transactions look like an exercise followed by immediate dispositions (i.e., shares sold the same day), which is a common way for insiders to monetize vested options.

Key Details

• Transaction date: March 5, 2026 (Form 4 filed March 9, 2026).
• Exercise: 4,748 option shares exercised at $3.38 each (total cost $16,048). Footnote F3: the option shares were fully vested.
• Sales: 4,748 shares sold at a weighted-average $28.44 (F1 notes trades ranged $28.39–$28.51) for $135,033; 2,655 shares sold at a weighted-average $28.51 (F2 notes trades ranged $28.47–$28.57) for $75,694.
• Shares owned after the transactions: not specified in the Form 4 filing.
• No 10b5-1 plan or tax-withholding detail disclosed in the filing; footnotes provide trade-price ranges and vesting status only.

Context

• This is an option exercise combined with same-day sales (often called a cashless or immediate disposition), which converts vested option value into cash. Sales do not necessarily signal a change in insider sentiment; they can be routine liquidity or tax-related.
• The filing is factual and does not state any trading plan or intent.