Ming Yan - Nov 18, 2023 Form 4 Insider Report for Cytek Biosciences, Inc. (CTKB)

Role: Chief Technology Officer, Director
Signature: /s/ Valerie Barnett, Attorney-in-Fact for Ming Yan
Stock symbol: CTKB
Transactions as of: Nov 18, 2023
Transactions value $: -$139,754
Form type: 4
Date filed: 11/21/2023, 05:59 PM
Previous filing: Nov 27, 2023
Next filing: Dec 21, 2023

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	CTKB	Common Stock	Options Exercise		+1.98K	+0.03%		7.78M	Nov 18, 2023	Direct	F1
transaction	CTKB	Common Stock	Tax liability	-$4.62K	-772	-0.01%	$5.98	7.78M	Nov 18, 2023	Direct	F2
transaction	CTKB	Common Stock	Options Exercise		+7.36K	+0.09%		7.78M	Nov 18, 2023	Direct	F1
transaction	CTKB	Common Stock	Tax liability	-$14.5K	-2.43K	-0.03%	$5.98	7.78M	Nov 18, 2023	Direct	F2
transaction	CTKB	Common Stock	Sale	-$121K	-20K	-0.26%	$6.03	7.76M	Nov 20, 2023	Direct	F3, F4

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	-1.98K	-10.34%	$0.00	17.2K	Nov 18, 2023	Common Stock	1.98K		Direct	F1, F5
transaction	CTKB	Restricted Stock Units	Options Exercise	$0	-7.36K	-6.98%	$0.00	98.2K	Nov 18, 2023	Common Stock	7.36K		Direct	F1, F6

* 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 November 18, 2023, to satisfy tax withholding obligations that arose in connection with the vesting of the RSU Award.
F3	The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 17, 2022.
F4	The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $5.88 to $6.11, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range.
F5	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.
F6	The shares subject to the RSU Award shall vest over four 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.