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CYTEK BIOSCIENCES, INC. (CTKB)

McCombe William D. 🟡 adjusted position in 383.2K shares (4 derivative) of Cytek Biosciences, Inc. (CTKB) at $4.23 Transaction Date: Mar 10, 2026 | Filing ID: 000001

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  • News bot March 12, 2026, 8:38 p.m.

    🔍 McCombe William D. (Executive)

    Company: Cytek Biosciences, Inc. (CTKB)

    Report Date: 2026-03-10

    Transaction Summary:

    • Total transactions: 8
    • Derivative instruments: 4
    • Holdings reported: 0
    • Total shares acquired: 416,716
    • Total shares sold: 33,469

    Detailed Transactions and Holdings:

    • Acquired 6,320 shares of Common Stock (Direct)
      Date: 2026-03-10 | Code: M | equity_swap_involved: 0 | shares_owned_after: 87,034.00 | transaction_form_type: 4 | Footnotes: F1
    • Sold 2,603 shares of Common Stock at $4.23 per share (Direct)
      Date: 2026-03-10 | Code: F | equity_swap_involved: 0 | shares_owned_after: 84,431.00 | transaction_form_type: 4 | Footnotes: F2
    • Acquired 17,401 shares of Common Stock (Direct)
      Date: 2026-03-10 | Code: M | equity_swap_involved: 0 | shares_owned_after: 101,832.00 | transaction_form_type: 4 | Footnotes: F1
    • Sold 7,145 shares of Common Stock at $4.23 per share (Direct)
      Date: 2026-03-10 | Code: F | equity_swap_involved: 0 | shares_owned_after: 94,687.00 | transaction_form_type: 4 | Footnotes: F2
    • Acquired 136,205 shares of Employee Stock Option (right to buy) at $4.23 per share (Derivative)
      Date: 2026-03-10 | Code: A | Expires: 2036-03-09 | equity_swap_involved: 0 | shares_owned_after: 136,205.00 | transaction_form_type: 4 | Footnotes: F3
    • Acquired 256,790 shares of Restricted Stock Units (Derivative)
      Date: 2026-03-10 | Code: A | equity_swap_involved: 0 | shares_owned_after: 256,790.00 | transaction_form_type: 4 | Footnotes: F1, F4, F4
    • Sold 6,320 shares of Restricted Stock Units (Derivative)
      Date: 2026-03-10 | Code: M | equity_swap_involved: 0 | shares_owned_after: 56,889.00 | transaction_form_type: 4 | Footnotes: F1, F5, F5
    • Sold 17,401 shares of Restricted Stock Units (Derivative)
      Date: 2026-03-10 | Code: M | equity_swap_involved: 0 | shares_owned_after: 156,613.00 | transaction_form_type: 4 | Footnotes: F1, F6, F6

    Footnotes:

    • F1: Each Restricted Stock Unit (the "RSU Award") represents a contingent right to receive one share of the Issuer's common stock.
    • F2: Represents the number of shares withheld by and surrendered to the Issuer on March 10, 2026, to satisfy tax withholding obligations that arose in connection with the vesting of the RSU Award.
    • F3: The shares subject to the stock option shall vest over 4 years with 1/48 of the total shares underlying the stock option vesting on April 10, 2026 and each month thereafter until fully vested.
    • F4: The shares subject to the RSU Award shall vest over 4 years with 2/48 of the total shares underlying the RSU Award vesting on May 18, 2026 and each May 18 thereafter; 3/48 of the total shares underlying the RSU Award vesting August 18, 2026 and each August 18 thereafter; 3/48 of the total shares underlying the RSU Award vesting November 18, 2026 and each November 18 thereafter; and 4/48 of the total shares underlying the RSU Award vesting on March 10, 2027 and each March 10 thereafter, until fully vested.
    • F5: The shares subject to the RSU Award shall vest over 4 years with 12/48 of the total shares underlying the RSU Award vesting on May 18, 2025; 3/48 of the total shares underlying the RSU Award vesting on August 18, 2025 and each August 18 thereafter; 3/48 of the total shares underlying the RSU Award vesting on November 18, 2025 and each November 18 thereafter; and 3/48 of the total shares underlying the RSU Award vesting on March 10, 2026 and each March 10 thereafter; and 3/48 of the total shares underlying the RSU Award vesting on May 18, 2026 and each May 18 thereafter.
    • F6: The shares subject to the RSU Award shall vest over 4 years with 2/48 of the total shares underlying the RSU Award vesting on May 18, 2025 and each May 18 thereafter; 3/48 of the total shares underlying the RSU Award vesting on August 18, 2025 and each August 18 thereafter; 3/48 of the total shares underlying the RSU Award vesting on November 18, 2025 and each November 18 thereafter; and 4/48 of the total shares underlying the RSU Award vesting on March 10, 2026 and each March 10 thereafter, until fully vested.

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