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Cytek Biosciences Insider Trades

NASDAQ: CTKBIndustrialsBiotechnology: Laboratory Analytical InstrumentsUSD

5.43+0.07 (+1.31%)

At close: Oct 9, 4:00 PM ET · Delayed 15 min

Last 12 months

Purchases
0 · $0
Sales
0 · $0
Shares bought / sold
0 / 0
Net activity
Net buying $0

Cytek Biosciences insider activity

Over the last 12 months, Cytek Biosciences insiders reported 100 transactions on SEC Form 4: 0 open-market purchases and 0 sales. The most recent filing shows Jiang Wenbin (PRESIDENT AND CEO) reporting a transaction in 11,781 shares on Aug 18, 2026. Insider sales are common for compensation, tax and diversification reasons, while open-market purchases are rarer; tracking both helps put CTKB's ownership changes in context.

Summary generated from market data by MetaCap's automated system. Methodology

CTKB insider transactions

Cytek Biosciences insider transactions
DateInsiderTypeSharesValueFiling
Aug 18, 2026Yan MingCHIEF TECHNOLOGY OFFICERTax withholding3,463$16.17KForm 4
Aug 18, 2026Yan MingCHIEF TECHNOLOGY OFFICEROption exercise14,220—Form 4
Aug 18, 2026Yan MingCHIEF TECHNOLOGY OFFICERTax withholding1,501$7.01KForm 4
Aug 18, 2026Yan MingCHIEF TECHNOLOGY OFFICEROption exercise6,162—Form 4
Aug 18, 2026Yan MingCHIEF TECHNOLOGY OFFICERTax withholding1,346$6.29KForm 4
Aug 18, 2026Yan MingCHIEF TECHNOLOGY OFFICEROption exercise5,525—Form 4
Aug 18, 2026Yan MingCHIEF TECHNOLOGY OFFICERTax withholding1,778$8.30KForm 4
Aug 18, 2026Yan MingCHIEF TECHNOLOGY OFFICEROption exercise7,363—Form 4
Aug 18, 2026Chin RichardDirectorOption exercise6,107—Form 4
Aug 18, 2026MUIR GLENN PDirectorOption exercise3,086—Form 4
Aug 18, 2026McCombe William D.Chief Financial OfficerTax withholding5,401$25.22KForm 4
Aug 18, 2026McCombe William D.Chief Financial OfficerOption exercise16,049—Form 4
Aug 18, 2026McCombe William D.Chief Financial OfficerTax withholding4,392$20.51KForm 4
Aug 18, 2026McCombe William D.Chief Financial OfficerOption exercise13,051—Form 4
Aug 18, 2026McCombe William D.Chief Financial OfficerTax withholding2,111$9.86KForm 4
Aug 18, 2026McCombe William D.Chief Financial OfficerOption exercise6,320—Form 4
Aug 18, 2026Holder MichaelDirectorOption exercise2,181—Form 4
Aug 18, 2026Jiang WenbinPRESIDENT AND CEOTax withholding20,956$97.86KForm 4
Aug 18, 2026Jiang WenbinPRESIDENT AND CEOOption exercise57,212—Form 4
Aug 18, 2026Jiang WenbinPRESIDENT AND CEOTax withholding7,062$32.98KForm 4
Aug 18, 2026Jiang WenbinPRESIDENT AND CEOOption exercise29,002—Form 4
Aug 18, 2026Jiang WenbinPRESIDENT AND CEOTax withholding5,382$25.13KForm 4
Aug 18, 2026Jiang WenbinPRESIDENT AND CEOOption exercise22,100—Form 4
Aug 18, 2026Jiang WenbinPRESIDENT AND CEOTax withholding2,869$13.40KForm 4
Aug 18, 2026Jiang WenbinPRESIDENT AND CEOOption exercise11,781—Form 4
Jun 12, 2026Yan MingCHIEF TECHNOLOGY OFFICERGift135,892—Form 4
Jun 10, 2026Holder MichaelDirectorOption exercise43,973—Form 4
Jun 10, 2026NEFF DEBORAH JDirectorOption exercise43,973—Form 4
Jun 10, 2026Imper VeraDirectorOption exercise43,973—Form 4
Jun 10, 2026Ball JackDirectorOption exercise43,973—Form 4
May 18, 2026Barnett ValerieCHIEF LEGAL OFFICERTax withholding3,386$12.02KForm 4
May 18, 2026Barnett ValerieCHIEF LEGAL OFFICEROption exercise9,435—Form 4
May 18, 2026Barnett ValerieCHIEF LEGAL OFFICERTax withholding2,602$9.24KForm 4
May 18, 2026Barnett ValerieCHIEF LEGAL OFFICEROption exercise7,250—Form 4
May 18, 2026Barnett ValerieCHIEF LEGAL OFFICERTax withholding1,850$6.57KForm 4
May 18, 2026Barnett ValerieCHIEF LEGAL OFFICEROption exercise5,156—Form 4
May 18, 2026Barnett ValerieCHIEF LEGAL OFFICERTax withholding881$3.13KForm 4
May 18, 2026Barnett ValerieCHIEF LEGAL OFFICEROption exercise2,454—Form 4
May 18, 2026McCombe William D.Chief Financial OfficerTax withholding3,839$13.63KForm 4
May 18, 2026McCombe William D.Chief Financial OfficerOption exercise10,699—Form 4
May 18, 2026McCombe William D.Chief Financial OfficerTax withholding3,122$11.08KForm 4
May 18, 2026McCombe William D.Chief Financial OfficerOption exercise8,700—Form 4
May 18, 2026McCombe William D.Chief Financial OfficerTax withholding2,268$8.05KForm 4
May 18, 2026McCombe William D.Chief Financial OfficerOption exercise6,320—Form 4
May 18, 2026Busque PhilippeSVP, GLOBAL SALES AND SERVICESTax withholding1,424$5.06KForm 4
May 18, 2026Busque PhilippeSVP, GLOBAL SALES AND SERVICESOption exercise5,551—Form 4
May 18, 2026Busque PhilippeSVP, GLOBAL SALES AND SERVICESTax withholding620$2.20KForm 4
May 18, 2026Busque PhilippeSVP, GLOBAL SALES AND SERVICESOption exercise2,416—Form 4
May 18, 2026Busque PhilippeSVP, GLOBAL SALES AND SERVICESTax withholding378$1.34KForm 4
May 18, 2026Busque PhilippeSVP, GLOBAL SALES AND SERVICESOption exercise1,473—Form 4
May 18, 2026Busque PhilippeSVP, GLOBAL SALES AND SERVICESTax withholding263$933.65Form 4
May 18, 2026Busque PhilippeSVP, GLOBAL SALES AND SERVICESOption exercise1,024—Form 4
May 18, 2026Chin RichardDirectorOption exercise6,107—Form 4
May 18, 2026Jiang WenbinPRESIDENT AND CEOTax withholding15,009$53.28KForm 4
May 18, 2026Jiang WenbinPRESIDENT AND CEOOption exercise38,141—Form 4
May 18, 2026Jiang WenbinPRESIDENT AND CEOTax withholding5,032$17.86KForm 4
May 18, 2026Jiang WenbinPRESIDENT AND CEOOption exercise19,334—Form 4
May 18, 2026Jiang WenbinPRESIDENT AND CEOTax withholding3,588$12.74KForm 4
May 18, 2026Jiang WenbinPRESIDENT AND CEOOption exercise14,733—Form 4
May 18, 2026Jiang WenbinPRESIDENT AND CEOTax withholding1,913$6.79KForm 4
May 18, 2026Jiang WenbinPRESIDENT AND CEOOption exercise7,854—Form 4
May 18, 2026Yan MingCHIEF TECHNOLOGY OFFICERTax withholding2,364$8.39KForm 4
May 18, 2026Yan MingCHIEF TECHNOLOGY OFFICEROption exercise9,480—Form 4
May 18, 2026Yan MingCHIEF TECHNOLOGY OFFICERTax withholding1,025$3.64KForm 4
May 18, 2026Yan MingCHIEF TECHNOLOGY OFFICEROption exercise4,108—Form 4
May 18, 2026Yan MingCHIEF TECHNOLOGY OFFICERTax withholding919$3.26KForm 4
May 18, 2026Yan MingCHIEF TECHNOLOGY OFFICEROption exercise3,683—Form 4
May 18, 2026Yan MingCHIEF TECHNOLOGY OFFICERTax withholding1,224$4.35KForm 4
May 18, 2026Yan MingCHIEF TECHNOLOGY OFFICEROption exercise4,908—Form 4
May 18, 2026Holder MichaelDirectorOption exercise1,454—Form 4
Mar 13, 2026Yan MingCHIEF TECHNOLOGY OFFICERGift1,176,000—Form 4
Mar 10, 2026McCombe William D.Chief Financial OfficerTax withholding7,145$30.22KForm 4
Mar 10, 2026McCombe William D.Chief Financial OfficerOption exercise17,401—Form 4
Mar 10, 2026McCombe William D.Chief Financial OfficerTax withholding2,603$11.01KForm 4
Mar 10, 2026McCombe William D.Chief Financial OfficerOption exercise6,320—Form 4
Mar 10, 2026Jiang WenbinPRESIDENT AND CEOTax withholding9,416$39.83KForm 4
Mar 10, 2026Jiang WenbinPRESIDENT AND CEOOption exercise38,669—Form 4
Mar 10, 2026Jiang WenbinPRESIDENT AND CEOTax withholding7,747$32.77KForm 4
Mar 10, 2026Jiang WenbinPRESIDENT AND CEOOption exercise29,467—Form 4
Mar 10, 2026Jiang WenbinPRESIDENT AND CEOTax withholding3,825$16.18KForm 4
Mar 10, 2026Jiang WenbinPRESIDENT AND CEOOption exercise15,708—Form 4
Mar 10, 2026Yan MingCHIEF TECHNOLOGY OFFICERTax withholding2,397$10.14KForm 4
Mar 10, 2026Yan MingCHIEF TECHNOLOGY OFFICEROption exercise8,217—Form 4
Mar 10, 2026Yan MingCHIEF TECHNOLOGY OFFICERTax withholding2,287$9.67KForm 4
Mar 10, 2026Yan MingCHIEF TECHNOLOGY OFFICEROption exercise7,366—Form 4
Mar 10, 2026Yan MingCHIEF TECHNOLOGY OFFICERTax withholding3,047$12.89KForm 4
Mar 10, 2026Yan MingCHIEF TECHNOLOGY OFFICEROption exercise9,817—Form 4
Mar 10, 2026Busque PhilippeSVP, GLOBAL SALES AND SERVICESTax withholding1,496$6.33KForm 4
Mar 10, 2026Busque PhilippeSVP, GLOBAL SALES AND SERVICESOption exercise4,833—Form 4
Mar 10, 2026Busque PhilippeSVP, GLOBAL SALES AND SERVICESTax withholding912$3.86KForm 4
Mar 10, 2026Busque PhilippeSVP, GLOBAL SALES AND SERVICESOption exercise2,946—Form 4
Mar 10, 2026Busque PhilippeSVP, GLOBAL SALES AND SERVICESTax withholding635$2.69KForm 4
Mar 10, 2026Busque PhilippeSVP, GLOBAL SALES AND SERVICESOption exercise2,049—Form 4
Mar 10, 2026Barnett ValerieCHIEF LEGAL OFFICERTax withholding5,740$24.28KForm 4
Mar 10, 2026Barnett ValerieCHIEF LEGAL OFFICEROption exercise14,501—Form 4
Mar 10, 2026Barnett ValerieCHIEF LEGAL OFFICERTax withholding4,247$17.96KForm 4
Mar 10, 2026Barnett ValerieCHIEF LEGAL OFFICEROption exercise10,313—Form 4
Mar 10, 2026Barnett ValerieCHIEF LEGAL OFFICERTax withholding1,761$7.45KForm 4
Mar 10, 2026Barnett ValerieCHIEF LEGAL OFFICEROption exercise4,908—Form 4
Mar 10, 2026Chin RichardDirectorOption exercise6,107—Form 4

Transaction codes follow SEC Form 4: P = open-market purchase, S = open-market sale, A = grant or award, M = option exercise, F = shares withheld for taxes. About Form 4

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