CASTLE BIOSCIENCES INC·4

May 27, 4:16 PM ET

Caple Kim 4

4 · CASTLE BIOSCIENCES INC · Filed May 27, 2026

Research Summary

AI-generated summary of this filing

Updated

Castle Biosciences Director Kim Converts/Exercises RSUs for 13,667 Shares

What Happened

  • Director Kim (Caple Kim) reported a conversion/exercise of a derivative security (transaction code M) on 2026-05-22 that resulted in 13,667 shares being issued (acquired; price reported as N/A). The filing also shows a simultaneous disposition of 13,667 shares for $0.00. The filing does not report cash proceeds from the disposition.

Key Details

  • Transaction date: 2026-05-22 (reported on Form 4 filed 2026-05-27).
  • Transaction codes: M (exercise or conversion of a derivative security).
  • Shares involved: 13,667 shares acquired (price N/A) and 13,667 shares disposed ($0.00).
  • Shares owned after transaction: Not specified in the provided filing excerpt.
  • Footnotes: F1 — Each RSU represents the right to receive one share of common stock. F2 — 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.
  • Timeliness: Transaction occurred 2026-05-22 and the Form 4 was filed 2026-05-27 (filed five days after the transaction); no late-filing flag was provided in the summary data.

Context

  • Transaction code M and the footnotes indicate these were RSU-related derivative units being converted/settled into common stock. The reported $0 disposition often reflects shares surrendered or issued with no cash consideration (for example, share withholding or conversion mechanics), but the filing excerpt does not specify the reason.
  • This was not a cash purchase or open-market sale by the insider, so it is a routine equity award/settlement event rather than a straightforward bullish or bearish trading signal.

Insider Transaction Report

Form 4
Period: 2026-05-22
Caple Kim
Director
Transactions
  • Exercise/Conversion

    Common Stock

    [F1]
    2026-05-22+13,66736,121 total
  • Exercise/Conversion

    Restricted Stock Units

    [F1][F2]
    2026-05-2213,6670 total
    Common Stock (13,667 underlying)
Footnotes (2)
  • [F1]Each Restricted Stock Unit ("RSU") represents the right to receive one share of the Issuer's Common Stock.
  • [F2]The RSUs vest in full on the earlier of the (a) one-year anniversary of the date on May 22, 2026, or (b) the day immediately preceding the next Annual Meeting of Stockholders following the date of the grant.
Signature
/s/ Frank Stokes, Attorney-in-fact|2025-05-27

Documents

1 file
  • 4
    wk-form4_1779913004.xmlPrimary

    FORM 4