Richard Chin

CIK: 0001337252

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)0 (0.0%)

Position reduction

Option Exercises (M)5 (55.6%)

Derivative conversions

Awards (A)4 (44.4%)

Compensation grants

Other (G, F, J, C, D, …)0 (0.0%)

Gifts, tax withholding, conversions, dispositions to the issuer and other codes

Companies & Roles (1)

CTKB

Cytek Biosciences, Inc.

Director

Discretionary Trading P&L

Holdings

Transaction History (9 total)

CTKB
Cytek Biosciences, Inc.
Aug 18, 2026
Exercise(M)
Direct
6.1K shares-
CTKB
Cytek Biosciences, Inc.
Jun 10, 2026
Award(A)
Restricted Stock Units
Direct
33.3K shares-
CTKB
Cytek Biosciences, Inc.
Jun 10, 2026
Award(A)
Director Stock Option (right to buy)
Direct
18.3K shares-
CTKB
Cytek Biosciences, Inc.
May 18, 2026
Exercise(M)
Direct
6.1K shares-
CTKB
Cytek Biosciences, Inc.
Mar 10, 2026
Exercise(M)
Direct
6.1K shares-
CTKB
Cytek Biosciences, Inc.
Nov 18, 2025
Exercise(M)
Direct
6.1K shares-
CTKB
Cytek Biosciences, Inc.
Aug 18, 2025
Exercise(M)
Direct
4.1K shares-
CTKB
Cytek Biosciences, Inc.
Jun 18, 2025
Award(A)
Restricted Stock Units
Direct
73.3K shares-
CTKB
Cytek Biosciences, Inc.
Jun 18, 2025
Award(A)
Director Stock Option (right to buy)
Direct
39.1K shares-

		Type	Shares	Price		Ownership
Aug 18, 2026	CTKB Cytek Biosciences, Inc.	Exercise(M)	6,107	-	$0	Direct
Jun 10, 2026	CTKB Cytek Biosciences, Inc.	Award(A) Restricted Stock Units	33,333	-	-	Direct
Jun 10, 2026	CTKB Cytek Biosciences, Inc.	Award(A) Director Stock Option (right to buy)	18,261	-	-	Direct
May 18, 2026	CTKB Cytek Biosciences, Inc.	Exercise(M)	6,107	-	$0	Direct
Mar 10, 2026	CTKB Cytek Biosciences, Inc.	Exercise(M)	6,107	-	$0	Direct
Nov 18, 2025	CTKB Cytek Biosciences, Inc.	Exercise(M)	6,107	-	-	Direct
Aug 18, 2025	CTKB Cytek Biosciences, Inc.	Exercise(M)	4,071	-	-	Direct
Jun 18, 2025	CTKB Cytek Biosciences, Inc.	Award(A) Restricted Stock Units	73,289	-	-	Direct
Jun 18, 2025	CTKB Cytek Biosciences, Inc.	Award(A) Director Stock Option (right to buy)	39,062	-	-	Direct

1-9 of 9 transactions

About Chin Richard

Chin Richard (SEC CIK 0001337252) files insider reports with the SEC as Director of Cytek Biosciences, Inc. (CTKB).

Signal8 holds 8 ownership filings by Chin Richard (1 Form 3, 7 Form 4), filed between Jun 20, 2025 and Aug 20, 2026. Those filings report 9 transactions, from Jun 18, 2025 to Aug 18, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Chin Richard's filings is in FREMONT, CA.

Recent filings by Chin Richard

Aug 18, 2026: Option exercise of CTKB shares (Form 4, code M).
Jun 10, 2026: Grants or awards of CTKB derivative securities (2 lines, Form 4, code A).
May 18, 2026: Option exercise of CTKB shares (Form 4, code M).
Mar 10, 2026: Option exercise of CTKB shares (Form 4, code M).
Nov 18, 2025: Option exercise of CTKB shares (Form 4, code M).

Other insiders filing for Cytek Biosciences, Inc. (CTKB)

Jiang Wenbin, PRESIDENT AND CEO
McCombe William D., Chief Financial Officer
MUIR GLENN P, Director
Holder Michael, Director
Yan Ming, CHIEF TECHNOLOGY OFFICER
Feuchtwang Ilan, Chief Legal Officer, Secretary

How to read Form 4 transaction codes