CTKB Insider Trading

Insider Ownership Percentage: 10.33%
Insider Buying (Last 12 Months): $194,600.00
Insider Selling (Last 12 Months): $0.00

Cytek Biosciences Insider Trading History Chart

This chart shows the insider buying and selling history at Cytek Biosciences by year and by quarter.

Skip ChartChart Data in Insider Trading History Table

Cytek Biosciences Share Price & Price History

Current Price: $5.20
Price Change: Price Decrease of -0.16 (-2.99%)
As of 12/4/2025 05:00 PM ET

This chart shows the closing price history over time for CTKB up to the past year.

Skip Chart and Table DataPrice Data in Insider Trading History Table
Days: 30 | 90 | 365

Cytek Biosciences Insider Trading History

Transaction DateInsider NameTitleBuy/SellNumber of SharesAverage Share PriceTotal TransactionShares Held After TransactionDetails
6/2/2025William D MccombeCFOBuy35,000$2.78$97,300.0055,746View SEC Filing Icon  
6/2/2025William D MccombeCFOBuy35,000$2.78$97,300.0055,746View SEC Filing Icon  
4/19/2024Ming YanCTOSell20,000$5.87$117,400.005,988,502View SEC Filing Icon  
4/9/2024Ming YanCTOSell1,900$7.00$13,300.006,008,502View SEC Filing Icon  
3/18/2024Ming YanCTOSell20,000$6.77$135,400.006,030,402View SEC Filing Icon  
12/26/2023Patrik JeanmonodCFOSell3,000$9.50$28,500.0093,400View SEC Filing Icon  
12/19/2023Ming YanCTOSell20,000$9.43$188,600.006,042,103View SEC Filing Icon  
11/24/2023Patrik JeanmonodCFOSell3,000$6.94$20,820.0096,400View SEC Filing Icon  
11/20/2023Ming YanCTOSell20,000$6.03$120,600.007,762,103View SEC Filing Icon  
11/7/2023Wenbin JiangCEOSell20,000$4.34$86,800.005,275,796View SEC Filing Icon  
10/24/2023Patrik JeanmonodCFOSell3,000$4.68$14,040.0096,084View SEC Filing Icon  
10/19/2023Ming YanCTOSell20,000$4.80$96,000.007,775,962View SEC Filing Icon  
10/9/2023Wenbin JiangCEOSell20,000$5.33$106,600.005,295,796View SEC Filing Icon  
9/25/2023Patrik JeanmonodCFOSell3,000$6.38$19,140.0099,084View SEC Filing Icon  
9/19/2023Ming YanCTOSell20,000$6.49$129,800.007,795,962View SEC Filing Icon  
9/7/2023Wenbin JiangCEOSell20,000$6.83$136,600.007,605,796View SEC Filing Icon  
8/24/2023Patrik JeanmonodCFOSell3,000$7.69$23,070.00102,084View SEC Filing Icon  
8/21/2023Ming YanCTOSell20,000$8.07$161,400.007,815,962View SEC Filing Icon  
8/7/2023Wenbin JiangCEOSell20,000$9.04$180,800.007,613,467View SEC Filing Icon  
7/19/2023Ming YanCTOSell20,000$8.76$175,200.007,830,258View SEC Filing Icon  
7/7/2023Wenbin JiangCEOSell20,000$8.48$169,600.007,633,467View SEC Filing Icon  
6/26/2023Patrik JeanmonodCFOSell3,000$7.96$23,880.00104,768View SEC Filing Icon  
6/20/2023Ming YanCTOSell20,000$8.18$163,600.007,850,258View SEC Filing Icon  
6/7/2023Wenbin JiangCEOSell20,000$8.23$164,600.007,653,467View SEC Filing Icon  
5/24/2023Patrik JeanmonodCFOSell3,000$7.76$23,280.00107,768View SEC Filing Icon  
5/19/2023Ming YanCTOSell20,000$7.19$143,800.007,870,258View SEC Filing Icon  
5/8/2023Wenbin JiangCEOSell20,000$11.55$231,000.007,664,439View SEC Filing Icon  
4/24/2023Patrik JeanmonodCFOSell3,000$10.24$30,720.00108,201View SEC Filing Icon  
4/19/2023Ming YanCTOSell20,000$9.71$194,200.007,886,053View SEC Filing Icon  
4/10/2023Wenbin JiangCEOSell20,000$8.88$177,600.007,684,439View SEC Filing Icon  
3/24/2023Patrik JeanmonodCFOSell3,000$8.33$24,990.00111,201View SEC Filing Icon  
3/20/2023Ming YanCTOSell20,000$9.29$185,800.007,906,053View SEC Filing Icon  
3/7/2023Wenbin JiangCEOSell20,000$10.13$202,600.007,704,439View SEC Filing Icon  
2/21/2023Ming YanCTOSell20,000$10.94$218,800.007,926,053View SEC Filing Icon  
2/8/2023Ming YanCTOSell897$13.53$12,136.417,944,844View SEC Filing Icon  
2/7/2023Wenbin JiangCEOSell20,000$13.19$263,800.007,720,314View SEC Filing Icon  
2/3/2023Ming YanCTOSell1,092$13.50$14,742.007,945,741View SEC Filing Icon  
1/24/2023Patrik JeanmonodCFOSell3,500$11.05$38,675.0076,132View SEC Filing Icon  
1/19/2023Ming YanCTOSell20,000$11.03$220,600.007,946,833View SEC Filing Icon  
1/9/2023Wenbin JiangCEOSell20,000$10.66$213,200.007,740,314View SEC Filing Icon  
12/27/2022Patrik JeanmonodCFOSell3,500$9.77$34,195.0079,632View SEC Filing Icon  
12/19/2022Ming YanCTOSell20,000$10.38$207,600.007,966,833View SEC Filing Icon  
12/7/2022Wenbin JiangCEOSell20,000$11.86$237,200.007,760,314View SEC Filing Icon  
See Full Table

SEC Filings (Institutional Ownership Changes) for Cytek Biosciences (NASDAQ:CTKB)

69.46% of Cytek Biosciences stock is owned by institutions. Institutional ownership can be a sign of analyst confidence in the fundamentals of the stock.

Institutional Buying and Selling by Quarter

This chart shows the instiutional buying and selling at CTKB by year and by quarter.

Skip Institutional Buying and Selling Chart and Table DataRead Chart Data in Institutional Trading History Table

Cytek Biosciences Institutional Trading History

Reporting DateHedge FundShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
11/21/2025CIBC Bancorp USA Inc.12,533$43K0.0%N/A0.010%Search for SEC Filing on Google Icon
11/17/2025Jacobs Levy Equity Management Inc.824,436$2.86M0.0%-7.2%0.645%Search for SEC Filing on Google Icon
11/17/2025Caxton Associates LLP93,408$0.32M0.0%-9.7%0.073%Search for SEC Filing on Google Icon
11/17/2025Susquehanna International Group LLP192,853$0.67M0.0%-8.9%0.151%Search for SEC Filing on Google Icon
11/17/2025Public Employees Retirement System of Ohio81,106$0.28M0.0%+17.7%0.063%Search for SEC Filing on Google Icon
11/17/2025Numerai GP LLC106,495$0.37M0.1%-74.8%0.083%Search for SEC Filing on Google Icon
11/17/2025Mercer Global Advisors Inc. ADV21,734$75K0.0%N/A0.017%Search for SEC Filing on Google Icon
11/17/2025Millennium Management LLC3,418,382$11.86M0.0%+269.6%2.673%Search for SEC Filing on Google Icon
11/17/2025MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.55,255$0.19M0.0%-14.2%0.043%Search for SEC Filing on Google Icon
11/17/2025Focus Partners Wealth70,576$0.25M0.0%N/A0.055%Search for SEC Filing on Google Icon
11/17/2025Citadel Advisors LLC82,304$0.29M0.0%-86.7%0.064%Search for SEC Filing on Google Icon
11/17/2025Brevan Howard Capital Management LP47,480$0.17M0.0%-13.9%0.037%Search for SEC Filing on Google Icon
11/17/2025Bank of America Corp DE170,160$0.59M0.0%+85.7%0.133%Search for SEC Filing on Google Icon
11/17/2025Aquatic Capital Management LLC84,150$0.29M0.0%+315.6%0.066%Search for SEC Filing on Google Icon
11/17/2025Alliancebernstein L.P.149,648$0.52M0.0%-1.4%0.117%Search for SEC Filing on Google Icon
11/17/2025Ameriprise Financial Inc.328,623$1.14M0.0%-20.3%0.257%Search for SEC Filing on Google Icon
11/14/2025Creative Planning108,631$0.38M0.0%+95.1%0.085%Search for SEC Filing on Google Icon
11/14/2025Two Sigma Investments LP175,759$0.61M0.0%N/A0.137%Search for SEC Filing on Google Icon
11/14/2025Topline Capital Management LLC6,944,280$24.10M4.1%+32.7%5.431%Search for SEC Filing on Google Icon
11/14/2025Squarepoint Ops LLC158,641$0.55M0.0%+9.4%0.124%Search for SEC Filing on Google Icon
11/14/2025Wellington Management Group LLP2,541,046$8.82M0.0%N/A1.987%Search for SEC Filing on Google Icon
11/14/2025Comerica Bank26,792$93K0.0%-11.9%0.021%Search for SEC Filing on Google Icon
11/13/2025Boston Partners37,183$0.13M0.0%N/A0.029%Search for SEC Filing on Google Icon
11/13/2025Arrowstreet Capital Limited Partnership361,290$1.25M0.0%+150.5%0.283%Search for SEC Filing on Google Icon
11/13/2025UBS Group AG468,689$1.63M0.0%-25.8%0.367%Search for SEC Filing on Google Icon
11/13/2025BNP Paribas Financial Markets23,816$83K0.0%+98.8%0.019%Search for SEC Filing on Google Icon
11/13/2025Franklin Resources Inc.86,768$0.30M0.0%+13.3%0.068%Search for SEC Filing on Google Icon
11/13/2025Legal & General Group Plc192,375$0.67M0.0%-38.0%0.150%Search for SEC Filing on Google Icon
11/13/2025Russell Investments Group Ltd.159,513$0.55M0.0%+473.9%0.125%Search for SEC Filing on Google Icon
11/13/2025Dynamic Technology Lab Private Ltd35,119$0.12M0.0%-23.2%0.027%Search for SEC Filing on Google Icon
11/12/2025Dimensional Fund Advisors LP3,217,788$11.17M0.0%-6.9%2.517%Search for SEC Filing on Google Icon
11/12/2025Royce & Associates LP1,763,262$6.12M0.1%+26.9%1.379%Search for SEC Filing on Google Icon
11/12/2025Quantbot Technologies LP33,907$0.12M0.0%+37.1%0.027%Search for SEC Filing on Google Icon
11/10/2025Ameritas Investment Partners Inc.9,823$34K0.0%-18.4%0.008%Search for SEC Filing on Google Icon
11/7/2025GSA Capital Partners LLP109,098$0.38M0.0%+210.2%0.086%Search for SEC Filing on Google Icon
11/7/2025Vanguard Group Inc.6,933,504$24.06M0.0%-10.7%5.450%Search for SEC Filing on Google Icon
11/7/2025JPMorgan Chase & Co.358,723$1.25M0.0%-16.6%0.282%Search for SEC Filing on Google Icon
11/6/2025Public Sector Pension Investment Board426,806$1.48M0.0%+22.0%0.335%Search for SEC Filing on Google Icon
11/6/2025Rhumbline Advisers280,367$0.97M0.0%-0.8%0.220%Search for SEC Filing on Google Icon
11/6/2025ProShare Advisors LLC22,004$76K0.0%-15.3%0.017%Search for SEC Filing on Google Icon
11/5/2025Savant Capital LLC29,703$0.10M0.0%+23.1%0.023%Search for SEC Filing on Google Icon
11/4/2025Brown Capital Management LLC4,958,016$17.20M0.7%-30.3%3.897%Search for SEC Filing on Google Icon
11/4/2025Principal Financial Group Inc.623,306$2.16M0.0%+8.9%0.490%Search for SEC Filing on Google Icon
11/4/2025Thrivent Financial for Lutherans78,934$0.27M0.0%+4.6%0.062%Search for SEC Filing on Google Icon
11/3/2025New York State Common Retirement Fund331,190$1.15M0.0%-84.1%0.260%Search for SEC Filing on Google Icon
10/30/2025Bailard Inc.29,300$0.10M0.0%N/A0.023%Search for SEC Filing on Google Icon
10/29/2025Wealth Enhancement Advisory Services LLC36,375$0.14M0.0%+17.1%0.029%Search for SEC Filing on Google Icon
10/23/2025SG Americas Securities LLC59,604$0.21M0.0%+371.3%0.047%Search for SEC Filing on Google Icon
10/15/2025CWM LLC55,066$0.19M0.0%+21.2%0.043%Search for SEC Filing on Google Icon
10/14/2025Yousif Capital Management LLC27,581$96K0.0%-11.6%0.022%Search for SEC Filing on Google Icon
10/9/2025Voya Investment Management LLC116,014$0.40M0.0%+202.8%0.091%Search for SEC Filing on Google Icon
8/27/2025Squarepoint Ops LLC145,051$0.49M0.0%+237.3%0.114%Search for SEC Filing on Google Icon
8/19/2025State of Wyoming9,538$32K0.0%-52.8%0.007%Search for SEC Filing on Google Icon
8/16/2025Public Sector Pension Investment Board349,736$1.19M0.0%+5.7%0.275%Search for SEC Filing on Google Icon
8/15/2025Tower Research Capital LLC TRC 19,760$67K0.0%+338.1%0.016%Search for SEC Filing on Google Icon
8/15/2025State of Tennessee Department of Treasury24,710$84K0.0%-63.6%0.019%Search for SEC Filing on Google Icon
8/15/2025Captrust Financial Advisors12,704$43K0.0%N/A0.010%Search for SEC Filing on Google Icon
8/15/2025Topline Capital Management LLC5,231,260$17.79M3.1%+255.7%4.112%Search for SEC Filing on Google Icon
8/15/2025Oxford Asset Management LLP12,673$43K0.0%-52.4%0.010%Search for SEC Filing on Google Icon
8/15/2025BNP Paribas Financial Markets11,978$41K0.0%-87.2%0.009%Search for SEC Filing on Google Icon
8/15/2025Brevan Howard Capital Management LP55,122$0.19M0.0%-31.1%0.043%Search for SEC Filing on Google Icon
8/15/2025Bank of America Corp DE91,612$0.31M0.0%-72.4%0.072%Search for SEC Filing on Google Icon
8/15/2025Ameriprise Financial Inc.412,311$1.40M0.0%+48.7%0.324%Search for SEC Filing on Google Icon
8/15/2025AQR Capital Management LLC1,238,393$4.21M0.0%+89.6%0.973%Search for SEC Filing on Google Icon
8/14/2025PDT Partners LLC91,869$0.31M0.0%-31.5%0.072%Search for SEC Filing on Google Icon
8/14/2025Jane Street Group LLC284,838$0.97M0.0%-17.2%0.224%Search for SEC Filing on Google Icon
8/14/2025MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.64,390$0.22M0.0%-8.8%0.051%Search for SEC Filing on Google Icon
8/14/2025Cerity Partners LLC51,362$0.18M0.0%N/A0.040%Search for SEC Filing on Google Icon
8/14/2025Federated Hermes Inc.7,221$25K0.0%+150.9%0.006%Search for SEC Filing on Google Icon
8/13/2025Marshall Wace LLP261,352$0.89M0.0%N/A0.205%Search for SEC Filing on Google Icon
8/13/2025Brown Capital Management LLC7,109,995$24.17M0.7%-4.7%5.589%Search for SEC Filing on Google Icon
8/13/2025Invesco Ltd.343,659$1.17M0.0%+2.0%0.270%Search for SEC Filing on Google Icon
8/13/2025Arrowstreet Capital Limited Partnership144,252$0.49M0.0%+199.6%0.113%Search for SEC Filing on Google Icon
8/13/2025Quantbot Technologies LP24,731$84K0.0%N/A0.019%Search for SEC Filing on Google Icon
8/13/2025Panagora Asset Management Inc.288,262$0.98M0.0%-29.5%0.227%Search for SEC Filing on Google Icon
8/13/2025Russell Investments Group Ltd.27,795$95K0.0%-58.8%0.022%Search for SEC Filing on Google Icon
8/12/2025XTX Topco Ltd115,401$0.39M0.0%-32.2%0.091%Search for SEC Filing on Google Icon
8/12/2025Prudential Financial Inc.112,667$0.38M0.0%+5.9%0.089%Search for SEC Filing on Google Icon
8/12/2025American Century Companies Inc.251,273$0.85M0.0%+8.2%0.198%Search for SEC Filing on Google Icon
8/12/2025Rhumbline Advisers282,651$0.96M0.0%-4.6%0.222%Search for SEC Filing on Google Icon
8/12/2025Legal & General Group Plc310,291$1.06M0.0%+4.5%0.244%Search for SEC Filing on Google Icon
8/12/2025JPMorgan Chase & Co.430,108$1.46M0.0%-35.9%0.338%Search for SEC Filing on Google Icon
8/12/2025Dynamic Technology Lab Private Ltd45,714$0.16M0.0%+244.1%0.036%Search for SEC Filing on Google Icon
8/8/2025Intech Investment Management LLC46,942$0.16M0.0%-30.8%0.037%Search for SEC Filing on Google Icon
8/8/2025Creative Planning55,677$0.19M0.0%+455.4%0.044%Search for SEC Filing on Google Icon
8/8/2025Geode Capital Management LLC2,729,593$9.28M0.0%+1.6%2.155%Search for SEC Filing on Google Icon
8/8/2025PNC Financial Services Group Inc.16,478$56K0.0%+331.8%0.013%Search for SEC Filing on Google Icon
8/7/2025Connor Clark & Lunn Investment Management Ltd.319,066$1.09M0.0%-11.3%0.252%Search for SEC Filing on Google Icon
8/7/2025Los Angeles Capital Management LLC15,332$52K0.0%N/A0.012%Search for SEC Filing on Google Icon
8/6/2025Savant Capital LLC24,133$82K0.0%N/A0.019%Search for SEC Filing on Google Icon
8/5/2025Bank of Montreal Can33,072$0.11M0.0%+110.7%0.026%Search for SEC Filing on Google Icon
7/25/2025CWM LLC45,420$0.15M0.0%+152.1%0.036%Search for SEC Filing on Google Icon
7/25/2025Vanguard Personalized Indexing Management LLC12,395$42K0.0%N/A0.010%Search for SEC Filing on Google Icon
7/16/2025State of Alaska Department of Revenue60,953$0.21M0.0%+5.4%0.048%Search for SEC Filing on Google Icon
7/15/2025Public Employees Retirement System of Ohio68,906$0.23M0.0%+448.0%0.054%Search for SEC Filing on Google Icon
7/10/2025NorthCrest Asset Manangement LLC15,258$57K0.0%-50.4%0.012%Search for SEC Filing on Google Icon
7/10/2025Wealth Enhancement Advisory Services LLC31,067$0.12M0.0%+97.7%0.025%Search for SEC Filing on Google Icon
7/9/2025Pallas Capital Advisors LLC14,069$48K0.0%N/A0.011%Search for SEC Filing on Google Icon
6/27/2025Goldman Sachs Group Inc.1,158,001$4.64M0.0%-13.7%0.914%Search for SEC Filing on Google Icon
6/18/2025Voya Investment Management LLC80,266$0.32M0.0%+101.9%0.063%Search for SEC Filing on Google Icon
Data available starting January 2016

See Full Table
Cytek Biosciences logo
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 that leverages full spectrum profiling technology to further broaden potential applications across cell analysis; aurora CS systems; amnis imagestream imaging flow cytometers; guava muse cell analyzers; guava easycyte flow cytometers; and orion reagent cocktail preparation systems. The company also provides reagents and kits, including cFluor reagents that are fluorochrome conjugated antibodies used to identify cells of interest for analysis on its instruments, as well as 25-color immunoprofiling assay that provides turnkey solutions for identifying major human immune subpopulations for TBNK cells, monocytes, dendritic cells, and basophils. In addition, it offers automated micro-sampling system and automated sample loader system, an automated loaders to integrate seamlessly into the aurora and northern lights systems; SpectroFlo software that provides intuitive workflow from quality control to data analysis for aurora and northern lights systems; and customer support tools. The company serves pharmaceutical and biopharma companies, academic research centers, and clinical research organizations. It distributes its products through direct sales force and support organizations in North America, Europe, China, and the Asia-Pacific regions; and through distributors or sales agents in European, Latin American, and the Middle Eastern countries. The company was formerly known as Cytoville, Inc. and changed its name to Cytek Biosciences, Inc. in August 2015. Cytek Biosciences, Inc. was founded in 1992 and is headquartered in Fremont, California.
Read More on Cytek Biosciences

Today's Range

Now: $5.20
Low: $4.96
High: $5.37

50 Day Range

MA: $4.49
Low: $3.38
High: $5.88

52 Week Range

Now: $5.20
Low: $2.37
High: $7.30

Volume

1,073,370 shs

Average Volume

1,828,866 shs

Market Capitalization

$664.87 million

P/E Ratio

N/A

Dividend Yield

N/A

Beta

1.29

Who are the company insiders with the largest holdings of Cytek Biosciences?

Cytek Biosciences' top insider investors include:
  1. Ming Yan (CTO)
  2. Patrik Jeanmonod (CFO)
  3. William D Mccombe (CFO)
Learn More about top insider investors at Cytek Biosciences.

Who are the major institutional investors of Cytek Biosciences?

Cytek Biosciences' top institutional investors include:
  1. Topline Capital Management LLC — 5.43%
  2. Vanguard Group Inc. — 5.45%
  3. Brown Capital Management LLC — 3.90%
  4. Millennium Management LLC — 2.67%
  5. Dimensional Fund Advisors LP — 2.52%
  6. Wellington Management Group LLP — 1.99%
Learn More about top institutional investors of Cytek Biosciences stock.

Which institutional investors are selling Cytek Biosciences stock?

Within the last quarter, CTKB stock was sold by these institutional investors:
  1. Brown Capital Management LLC
  2. New York State Common Retirement Fund
  3. Vanguard Group Inc.
  4. Citadel Advisors LLC
  5. Numerai GP LLC
  6. Dimensional Fund Advisors LP
  7. UBS Group AG
  8. Legal & General Group Plc

Which institutional investors are buying Cytek Biosciences stock?

During the last quarter, CTKB stock was bought by institutional investors including:
  1. Wellington Management Group LLP
  2. Millennium Management LLC
  3. Topline Capital Management LLC
  4. Royce & Associates LP
  5. Arrowstreet Capital Limited Partnership
  6. Two Sigma Investments LP
  7. Russell Investments Group Ltd.
  8. Bank of America Corp DE