InsiderTrades

Form 4 for CTKB Cytek Biosciences, Inc.

Accepted 2025-03-12 00:00:00 ET · period of report 2025-03-10 · accession 0001415889-25-007887 · 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 2025-03-12 2025-03-10 CTKB Holder Michael Dir M - OptEx — +2,908 6,543 +80% —
D 2025-03-12 2025-03-10 CTKB Holder Michael Dir M - OptEx $0.00 -2,908 19.6K -13% $0

Purchase Sale Sale after option exercise All abbreviations

Every reported transaction

#TableSecurityDateCodeA/DSharesPriceOwned afterOwnExercise / expiryUnderlyingFootnotes
1 Common Common Stock 2025-03-10 M A 2,908 — 6,543 D — — (F1) Each Restricted Stock Unit (the "RSU Award") represents a contingent right to receive one share of the Issuer's common stock.
2 Derivative Restricted Stock Units 2025-03-10 M D 2,908 $0.00 19,635 D — · — to — 2,908 Common Stock (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.