NASDAQ:CTKB

Cytek Biosciences Stock Insider Trading

Healthcare > Medical - Devices

Buy CTKB

*Your capital is at risk

$4.22

-0.0900 (-2.09%)

At Close: Jul 31, 2026

Cytek Biosciences Stock Insider Power

Based on the 100 latest insides trades, we have calculated the insider power to be positive at 91.67. In total, the insiders bought 1.55M and sold 1.38M 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)	91.67
● Buy	1.55M shares
● Sell	1.38M shares
76% Buy Activity Weak Negative Correlation
Sell Signal Low Confidence Mar 13, 2026 Analysis Breakdown: Signal is highly questionable due to a strongly contradictory positive Insider Power Score of 91.67. Confidence increased due to high data reliability score of 100.

Historical Insider Trades

Date	Type	Person	Role	Amount
Jun 29, 2026 Buy	Common Stock J-Other	Feuchtwang Ilan Insider	Other	0 Value: $0
Jun 12, 2026 Sell	Common Stock G-Gift	Yan Ming Chief Technology Officer	Officer	135 892 Value: $0
Jun 10, 2026 Buy	Common Stock M-Exempt	Ball Jack Director	Director	43 973 Value: $178.1K
Jun 10, 2026 Buy	Restricted Stock Units A-Award	Muir Glenn P Director	Director	55 555 Value: $225.0K
Jun 10, 2026 Buy	Director Stock Option (right to buy) A-Award	Muir Glenn P Director	Director	29 835 Value: $120.8K
Jun 10, 2026 Buy	Restricted Stock Units A-Award	Chin Richard Director	Director	33 333 Value: $135.0K
Jun 10, 2026 Buy	Common Stock M-Exempt	Imper Vera Director	Director	43 973 Value: $178.1K
Jun 10, 2026 Buy	Director Stock Option (right to buy) A-Award	Imper Vera Director	Director	18 261 Value: $74.0K
Jun 10, 2026 Buy	Common Stock M-Exempt	Neff Deborah J Director	Director	43 973 Value: $178.1K
Jun 10, 2026 Buy	Director Stock Option (right to buy) A-Award	Neff Deborah J Director	Director	18 261 Value: $74.0K
Jun 10, 2026 Buy	Restricted Stock Units M-Exempt	Neff Deborah J Director	Director	43 973 Value: $178.1K
Jun 10, 2026 Buy	Restricted Stock Units A-Award	Holder Michael Director	Director	33 333 Value: $135.0K
Jun 10, 2026 Buy	Restricted Stock Units M-Exempt	Holder Michael Director	Director	43 973 Value: $178.1K
Jun 10, 2026 Buy	Director Stock Option (right to buy) A-Award	Holder Michael Director	Director	18 261 Value: $74.0K
Jun 10, 2026 Buy	Common Stock M-Exempt	Holder Michael Director	Director	43 973 Value: $178.1K
Jun 10, 2026 Buy	Restricted Stock Units A-Award	Neff Deborah J Director	Director	33 333 Value: $135.0K
Jun 10, 2026 Buy	Restricted Stock Units M-Exempt	Imper Vera Director	Director	43 973 Value: $178.1K
Jun 10, 2026 Buy	Restricted Stock Units A-Award	Imper Vera Director	Director	33 333 Value: $135.0K
Jun 10, 2026 Buy	Director Stock Option (right to buy) A-Award	Chin Richard Director	Director	18 261 Value: $74.0K
Jun 10, 2026 Buy	Common Stock J-Other	Muir Glenn P Insider	Other	0 Value: $0
Jun 10, 2026 Buy	Restricted Stock Units M-Exempt	Ball Jack Director	Director	43 973 Value: $178.1K
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

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