InsiderTrades

Form 4 for CTKB Cytek Biosciences, Inc.

Accepted 2025-02-20 00:00:00 ET · period of report 2025-02-18 · accession 0001415889-25-004926 · SEC index · Original document

Summary rows

Aggregated the way they appear in lists: one row per insider, transaction code and security table.

X Filed Traded Ticker Insider Title Type Price Qty Owned ΔOwn Value
D 2025-02-20 2025-02-18 CTKB Yan Ming CTO, Dir F - Tax $5.31 -588 6.02M -0.0% -$3,122
D 2025-02-20 2025-02-18 CTKB Yan Ming CTO, Dir M - OptEx — +1,981 6.02M +0.0% —
D 2025-02-20 2025-02-18 CTKB Yan Ming CTO, Dir M - OptEx $0.00 -1,981 7,275 -21% $0

Purchase Sale Sale after option exercise All abbreviations

Every reported transaction

#TableSecurityDateCodeA/DSharesPriceOwned afterOwnExercise / expiryUnderlyingFootnotes
1 Common Common Stock 2025-02-18 F D 588 $5.31 6,019,715 D — — (F2) Represents the number of shares withheld by and surrendered to the Issuer on February 18, 2025, to satisfy tax withholding obligations that arose in connection with the vesting of the RSU Award.
2 Common Common Stock 2025-02-18 M A 1,981 — 6,020,303 D — — (F1) Each Restricted Stock Unit (the "RSU Award") represents a contingent right to receive one share of the Issuer's common stock.
3 Derivative Restricted Stock Units 2025-02-18 M D 1,981 $0.00 7,275 D — · — to — 1,981 Common Stock (F1) Each Restricted Stock Unit (the "RSU Award") represents a contingent right to receive one share of the Issuer's common stock. (F3) The shares subject to the RSU Award shall vest quarterly over four years, with 4/48th of the total shares underlying the RSU Award vesting on May 18, 2022 and 3/48th of the total shares underlying the RSU Award vesting each subsequent quarter thereafter on August 18, November 18, February 18 and May 18.