Richard Chin - Jun 18, 2025 Form 4 Insider Report for Cytek Biosciences, Inc. (CTKB)

Role
Director
Signature
/s/ Valerie Barnett, Attorney-in-Fact
Stock symbol
CTKB
Transactions as of
Jun 18, 2025
Transactions value $
$0
Form type
4
Date filed
6/20/2025, 04:31 PM
Previous filing
Aug 30, 2021
Next filing
Aug 20, 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Chin Richard Director C/O CYTEK BIOSCIENCES, INC., 47215 LAKEVIEW BOULEVARD, FREMONT /s/ Valerie Barnett, Attorney-in-Fact 2025-06-20 0001337252

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction CTKB Restricted Stock Units Award $0 +73.3K $0.00 73.3K Jun 18, 2025 Common Stock 73.3K Direct F1, F2
transaction CTKB Director Stock Option (right to buy) Award $0 +39.1K $0.00 39.1K Jun 18, 2025 Common Stock 39.1K $3.07 Direct F3
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
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.
F3 1/36 of the total shares subject to the option shall vest monthly over 3 years following the grant date of June 18, 2025.