Holder Michael 4
4 · Cytek Biosciences, Inc. · Filed May 20, 2026
Research Summary
AI-generated summary of this filing
Cytek Biosciences (CTKB) Director Michael Holder Converts 1,454 RSUs to Shares
What Happened
Michael Holder, a director of Cytek Biosciences, had 1,454 restricted stock units (RSUs) convert/settle into 1,454 shares on May 18, 2026 (transaction code M — exercise/conversion of a derivative). The filing shows 1,454 shares acquired (no acquisition price reported) and the identical 1,454 shares immediately reported as disposed at $0.00, so no cash proceeds are listed.
Key Details
- Transaction date: May 18, 2026; Form 4 filed May 20, 2026 with the SEC.
- Reported amounts: 1,454 shares acquired (conversion of RSUs) and 1,454 shares disposed at $0.00.
- Price / value: Acquisition price not applicable; disposal price reported as $0.00 (no sale proceeds).
- Shares owned after transaction: Not specified in the provided filing information.
- Footnotes: F1 clarifies each RSU equals a contingent right to one share. F2 provides the multi-year vesting schedule (fractional vesting over 36 months with specified vesting dates).
- Filing timeliness: Form filed two days after the transaction date (May 20, 2026); the filing does not indicate a late-report flag in the provided data.
- Disposal note: The filing does not state the reason for the $0.00 disposals; filings commonly show similar disposals when shares are withheld or surrendered to cover taxes or related obligations, but that specific reason is not explicitly stated here.
Context
This was a derivative settlement (RSU conversion), not an open-market purchase or sale. Because the shares were reported acquired through conversion and immediately reported disposed at $0.00, this appears to be an administrative settlement rather than a market trade signaling a change in economic exposure. Retail investors often view purchases as stronger signals than administrative RSU settlements; treat this entry as a vesting/settlement disclosure rather than an indicator of directional insider buying or selling.
Insider Transaction Report
- Exercise/Conversion
Common Stock
[F1]2026-05-18+1,454→ 16,721 total - Exercise/Conversion
Restricted Stock Units
[F1][F2]2026-05-18−1,454→ 9,457 total→ Common Stock (1,454 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, 2024; 3/36 of the total shares subject to the RSU Award shall vest on November 18, 2024 and each November 18 thereafter; 4/36 of the total shares underlying the RSU Award shall vest on March 10, 2025 and each March 10 thereafter; 2/36 of the total shares underlying the RSU Award vesting shall vest on May 18, 2025 and each May 18 thereafter; and 3/36 of the total shares underlying the RSU Award shall vest on August 18, 2025 and each August 18 thereafter, until fully vested.