William D. McCombe - Jun 2, 2025 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: Jun 2, 2025
Transactions value $: $97,300
Form type: 4
Date filed: 6/3/2025, 05:39 PM
Previous filing: May 21, 2025
Next filing: Aug 20, 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
McCombe William D.	Chief Financial Officer	C/O CYTEK BIOSCIENCES, INC., 47215 LAKEVIEW BOULEVARD, FREMONT	/s/ Valerie Barnett, Attorney-in-Fact	2025-06-03	0001878824

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	CTKB	Common Stock	Purchase	$97.3K	+35K	+168.71%	$2.78	55.7K	Jun 2, 2025	Direct	F1

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

Explanation of Responses:

Id	Content
F1	The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $2.76 to $2.81, 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.

Content

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $2.76 to $2.81, 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.