Philippe Busque Cytek Biosciences, Inc. (CTKB) insider trading activity

Philippe Busque is SVP, GLOBAL SALES AND SERVICES of Cytek Biosciences, Inc.. Currently has a direct ownership of 23,416 shares of CTKB, which is worth approximately $108,181. The most recent transaction as insider was on Aug 18, 2025, when has been sold 2,872 shares (Common Stock) at a price of $4.06 per share, resulting in proceeds of $11,660. This information was disclosed in a Form 4 filing with the Securities and Exchange Commission (SEC).

Shares Held (Direct Ownership) 23.4K

23.78% 3M change

121.22% 12M change

Total Value Held $108,181

Philippe Busque Transaction History

Date	Transaction	Value	Shares Traded	Shares Held
Aug 18 2025	SELL Payment of exercise price or tax liability	$11,660 $4.06 p/Share	2,872 Reduced 10.93%	23,416 Common Stock
Aug 18 2025	BUY Exercise of conversion of derivative security	-	7,371 Added 22.89%	24,828 Common Stock
May 19 2025	SELL Payment of exercise price or tax liability	$5,151 $2.69 p/Share	1,915 Reduced 9.19%	18,917 Common Stock
May 19 2025	BUY Exercise of conversion of derivative security	-	4,913 Added 19.83%	19,859 Common Stock
Mar 10 2025	SELL Payment of exercise price or tax liability	$8,488 $4.36 p/Share	1,947 Reduced 10.9%	15,919 Common Stock
Mar 10 2025	BUY Exercise of conversion of derivative security	-	4,995 Added 22.64%	17,067 Common Stock
Nov 18 2024	SELL Payment of exercise price or tax liability	$8,803 $6.03 p/Share	1,460 Reduced 10.19%	12,871 Common Stock
Nov 18 2024	BUY Exercise of conversion of derivative security	-	3,746 Added 21.43%	13,732 Common Stock
Aug 19 2024	SELL Payment of exercise price or tax liability	$8,073 $5.53 p/Share	1,460 Reduced 12.12%	10,585 Common Stock
Aug 19 2024	BUY Exercise of conversion of derivative security	-	3,746 Added 24.66%	11,446 Common Stock
May 20 2024	SELL Payment of exercise price or tax liability	$18,881 $5.96 p/Share	3,168 Reduced 27.63%	8,299 Common Stock
May 20 2024	BUY Exercise of conversion of derivative security	-	8,132 Added 47.82%	8,873 Common Stock
Mar 20 2024	SELL Payment of exercise price or tax liability	$14,264 $6.7 p/Share	2,129 Reduced 38.96%	3,335 Common Stock
Mar 20 2024	BUY Exercise of conversion of derivative security	-	5,464 Added 50.0%	5,464 Common Stock

Philippe Busque

SVP, GLOBAL SALES AND SERVICES

Fremont, CA

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