Cytek Biosciences, Inc.·4

Mar 12, 4:41 PM ET

Chin Richard 4

4 · Cytek Biosciences, Inc. · Filed Mar 12, 2026

Research Summary

AI-generated summary of this filing

Updated

Cytek (CTKB) Director Richard Chin Converts RSUs into 6,107 Shares

What Happened

  • Richard Chin, a director of Cytek Biosciences (CTKB), had 6,107 restricted stock units convert to 6,107 shares on March 10, 2026 (reported as a derivative conversion/exercise, code M). The filing also shows a simultaneous disposition of 6,107 shares at $0.00. No cash purchase or sale proceeds are reported.
  • This was not a market purchase or cash sale. Converting RSUs to shares and showing a $0.00 disposition is commonly used for net share settlement or to satisfy tax-withholding obligations, rather than an open-market sale.

Key Details

  • Transaction date: March 10, 2026; Form 4 filed March 12, 2026.
  • Reported transactions: 6,107 shares acquired via conversion/exercise (derivative); 6,107 shares disposed at $0.00 (derivative).
  • Price/value: Acquired price listed as N/A; disposed price listed as $0.00 (no cash proceeds reported).
  • Shares owned after transaction: Not disclosed in the filing.
  • Footnotes: F1 — each RSU converts to one share; F2 — this transaction reflects the vesting schedule (3/36 of the award vested on March 10, 2026).

Context

  • These were RSU conversions (not option purchases). When converted RSUs are immediately reported as disposed at $0.00, it typically indicates net settlement or withholding to cover taxes rather than an active market sale. Such transactions are routine for vested equity awards and do not necessarily signal a change in insider sentiment.

Insider Transaction Report

Form 4
Period: 2026-03-10
Chin Richard
Director
Transactions
  • Exercise/Conversion

    Common Stock

    [F1]
    2026-03-10+6,10716,285 total
  • Exercise/Conversion

    Restricted Stock Units

    [F1][F2]
    2026-03-106,10757,004 total
    Common Stock (6,107 underlying)
Footnotes (2)
  • [F1]Each Restricted Stock Unit (the "RSU Award") represents a contingent right to receive one share of the Issuer's common stock.
  • [F2]2/36 of the total shares subject to the RSU Award shall vest on August 18, 2025; 3/36 of the total shares subject to the RSU Award shall vest on November 18, 2025 and each November 18 thereafter; 3/36 of the total shares underlying the RSU Award shall vest on March 10, 2026 and each March 10 thereafter; 3/36 of the total shares underlying the RSU Award vesting shall vest on May 18, 2026 and each May 18 thereafter; and 3/36 of the total shares underlying the RSU Award shall vest on August 18, 2026 and each August 18 thereafter, until fully vested.
Signature
/s/ Valerie Barnett, Attorney-in-Fact|2026-03-12

Documents

1 file
  • 4
    form4-03122026_080314.xmlPrimary