Paul Christopher Williams - Oct 31, 2022 Form 4 Insider Report for Cytek Biosciences, Inc. (CTKB)

Role: Chief Operating Officer
Signature: /s/ Valerie Barnett, Attorney-in-Fact for Paul Christopher Williams
Stock symbol: CTKB
Transactions as of: Oct 31, 2022
Transactions value $: $0
Form type: 4
Date filed: 11/2/2022, 05:48 PM
Next filing: Mar 7, 2023

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	Stock option (right to buy)	Award	$0	+24.6K		$0.00	24.6K	Oct 31, 2022	Common Stock	24.6K	$15.52	Direct	F1
transaction	CTKB	Restricted Stock Units	Award	$0	+16.1K		$0.00	16.1K	Oct 31, 2022	Common Stock	16.1K		Direct	F2, F3

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	The shares subject to the option shall vest as follows: 25% of the shares shall vest on October 31, 2023 and 1/48th of the total shares subject to the option shall vest monthly thereafter over the following three years.
F2	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 over 4 years with 12/48 of the total shares underlying the RSU Award vesting on November 18, 2023 and 3/48 of the total shares underlying the RSU Award vesting each subsequent quarter thereafter on February 18, May 18, August 18 and November 18.