Patrik Jeanmonod - Mar 11, 2024 Form 4 Insider Report for Cytek Biosciences, Inc. (CTKB)

Role: CHIEF FINANCIAL OFFICER
Signature: /s/ Valerie Barnett, Attorney-in-Fact
Stock symbol: CTKB
Transactions as of: Mar 11, 2024
Transactions value $: -$13,805
Form type: 4
Date filed: 3/13/2024, 06:44 PM
Previous filing: Feb 22, 2024

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	CTKB	Common Stock	Options Exercise		+4.91K	+5.2%		99.4K	Mar 11, 2024	Direct	F1
transaction	CTKB	Common Stock	Tax liability	-$13.8K	-1.91K	-1.92%	$7.22	97.5K	Mar 11, 2024	Direct	F2

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	Options Exercise	$0	-4.91K	-10%	$0.00	44.2K	Mar 11, 2024	Common Stock	4.91K		Direct	F1, 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	Represents the number of shares withheld by and surrendered to the Issuer on March 11, 2024, to satisfy tax withholding obligations that arose in connection with the vesting of the RSU Award.
F3	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, 2023 and each May 18 thereafter; 3/48 of the total shares underlying the RSU Award vesting on August 18, 2023 and each August 18 thereafter; 3/48 of the total shares underlying the RSU Award vesting on November 18, 2023 and each November 18 thereafter; and 4/48 of the total shares underlying the RSU Award vesting each March 10, 2024 and each March 10 thereafter, until fully vested.