NASDAQ:CTKB

Cytek Biosciences Stock Insider Trading

Healthcare > Medical - Devices

Buy CTKB

*Your capital is at risk

$4.05

-0.140 (-3.34%)

At Close: Jun 03, 2026

Cytek Biosciences Stock Insider Power

Based on the 100 latest insides trades, we have calculated the insider power to be positive at 94.25. In total, the insiders bought 2.81M and sold 1.26M CTKB shares in the last 100 trades. The insider score can be negative despite buy/sell ratio being positive. The score focuses on the quality of the trades.

Insider Power (Last 100 transactions)	94.25
● Buy	2.81M shares
● Sell	1.26M shares
71% Buy Activity Negligible or No Correlation
Sell Signal Low Confidence Mar 13, 2026 Analysis Breakdown: Signal is highly questionable due to a strongly contradictory positive Insider Power Score of 94.25. Confidence increased due to high data reliability score of 100.

Historical Insider Trades

Date	Type	Person	Role	Amount
May 18, 2026 Buy	Restricted Stock Units M-Exempt	Yan Ming Chief Technology Officer	Officer	3 683 Value: $13.1K
May 18, 2026 Buy	Restricted Stock Units M-Exempt	Busque Philippe SVP, Global Sales And Services	Officer	5 551 Value: $19.7K
May 18, 2026 Sell	Common Stock F-InKind	Busque Philippe SVP, Global Sales And Services	Officer	1 424 Value: $5K
May 18, 2026 Buy	Common Stock M-Exempt	Busque Philippe SVP, Global Sales And Services	Officer	2 416 Value: $9K
May 18, 2026 Buy	Common Stock M-Exempt	Busque Philippe SVP, Global Sales And Services	Officer	1 473 Value: $5K
May 18, 2026 Buy	Common Stock M-Exempt	Busque Philippe SVP, Global Sales And Services	Officer	1 024 Value: $4K
May 18, 2026 Sell	Common Stock F-InKind	Busque Philippe SVP, Global Sales And Services	Officer	263 Value: $934
May 18, 2026 Buy	Restricted Stock Units M-Exempt	Busque Philippe SVP, Global Sales And Services	Officer	1 473 Value: $5K
May 18, 2026 Buy	Restricted Stock Units M-Exempt	Busque Philippe SVP, Global Sales And Services	Officer	1 024 Value: $4K
May 18, 2026 Buy	Common Stock M-Exempt	Jiang Wenbin President And CEO	CEO / President	38 141 Value: $135.4K
May 18, 2026 Sell	Common Stock F-InKind	Jiang Wenbin President And CEO	CEO / President	15 009 Value: $53.3K
May 18, 2026 Buy	Common Stock M-Exempt	Jiang Wenbin President And CEO	CEO / President	19 334 Value: $68.6K
May 18, 2026 Sell	Common Stock F-InKind	Jiang Wenbin President And CEO	CEO / President	5 032 Value: $17.9K
May 18, 2026 Buy	Common Stock M-Exempt	Jiang Wenbin President And CEO	CEO / President	14 733 Value: $52.3K
May 18, 2026 Sell	Common Stock F-InKind	Jiang Wenbin President And CEO	CEO / President	3 588 Value: $12.7K
May 18, 2026 Buy	Common Stock M-Exempt	Jiang Wenbin President And CEO	CEO / President	7 854 Value: $27.9K
May 18, 2026 Sell	Common Stock F-InKind	Busque Philippe SVP, Global Sales And Services	Officer	378 Value: $1K
May 18, 2026 Sell	Common Stock F-InKind	Busque Philippe SVP, Global Sales And Services	Officer	620 Value: $2K
May 18, 2026 Buy	Restricted Stock Units M-Exempt	Busque Philippe SVP, Global Sales And Services	Officer	2 416 Value: $9K
May 18, 2026 Buy	Common Stock M-Exempt	Busque Philippe SVP, Global Sales And Services	Officer	5 551 Value: $19.7K
May 18, 2026 Buy	Restricted Stock Units M-Exempt	Yan Ming Chief Technology Officer	Officer	4 908 Value: $17.4K
May 18, 2026 Buy	Restricted Stock Units M-Exempt	Yan Ming Chief Technology Officer	Officer	4 108 Value: $14.6K
May 18, 2026 Buy	Restricted Stock Units M-Exempt	Yan Ming Chief Technology Officer	Officer	9 480 Value: $33.7K
May 18, 2026 Sell	Common Stock F-InKind	Yan Ming Chief Technology Officer	Officer	1 224 Value: $4K
May 18, 2026 Buy	Common Stock M-Exempt	Yan Ming Chief Technology Officer	Officer	4 908 Value: $17.4K

About Insider Power

Insider Power is a proprietary algorithm developed by StockInvest.us to evaluate the significance of insider transactions. The calculation considers the size, type, and timing of transactions, as well as the insider’s role within the company.

It is important to note that, in general, there is little to no correlation between insider transactions and short-term stock price movements. In one of our studies, only 0.22%^* of stocks with insider activity showed a measurable correlation — and even then, it was unclear whether the effect was caused by insider actions or simply by the stock’s broader trend.

While our algorithms are designed to highlight potentially meaningful signals, these cannot be regarded as statistically significant on their own. Insider trading activity should therefore be seen as informative rather than as direct trading guidance. The Insider Power metric was created to present this information in a clearer and more accessible way, helping investors better understand the possible context of insider activity.

* October 6th, 2025 - Tested on 5562 stocks

ABOUT CYTEK BIOSCIENCES, INC.

Cytek Biosciences, Inc., a cell analysis solutions company, provides cell analysis tools that facilitates scientific advances in biomedical research and clinical applications. It offers aurora and northern lights systems, which are spectrum flow cytometers that delivers cell analysis by utilizing the fluorescence signatures from multiple lasers to distinguish fluorescent tags on single cells; and aurora cell sorter system, which leverages full sp...

Read Full Profile Here