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Cytek Biosciences, Inc.

CTKB
Exchange
Nasdaq
Industry
Laboratory Analytical Instruments
SEC CIK
0001831915

No open-market purchases or sales by Cytek Biosciences, Inc. insiders were filed in the last 90 days; 154 institutions reported holding it in 13F filings for Q2 2026, worth $361.0M in total; HHLR Advisors (Hillhouse) is the only superinvestor holding it.

Open-market trades, last 90 days

Open-market purchases (P) and sales (S) by Cytek Biosciences, Inc. insiders, counted by Form 4 filing. Trades with a flagged price and duplicate filings are left out.

Open-market buys
0 filings
Open-market sells
0 filings
Insiders trading
0
Net value
$0
Purchases minus sales

Insider roster

Directors, officers and 10% owners who have filed a Form 4 for Cytek Biosciences, Inc., current and former, most recent filer first. Last reported holding is the position after the last non-derivative trade in their latest filing.

Insider roster for Cytek Biosciences, Inc.
NameTitleLast reported holdingLast filingFilings, past year
Jiang WenbinPRESIDENT AND CEO5,561,029Aug 20, 20265
McCombe William D.Chief Financial Officer134,693Aug 20, 20264
Muir Glenn PDirector3,086Aug 20, 20262
Holder MichaelDirector62,875Aug 20, 20265
Chin RichardDirector28,499Aug 20, 20265
Yan MingCHIEF TECHNOLOGY OFFICER4,821,870Aug 20, 20267
Feuchtwang IlanChief Legal Officer, Secretary–Aug 12, 20261
Neff Deborah JDirector59,679Jun 12, 20261
Ball JackDirector86,678Jun 12, 20261
Imper VeraDirector59,679Jun 12, 20261
Barnett ValerieCHIEF LEGAL OFFICER150,012May 20, 20264
Busque PhilippeSVP, GLOBAL SALES AND SERVICES43,466May 20, 20263
Hardison Don MDirector15,706Jun 9, 20250
Poirson AllenSVP BUS. AND CORP. DEV.59,981Nov 20, 20240
Williams Paul ChristopherCHIEF OPERATING OFFICER16,473Aug 21, 20240
Jeanmonod PatrikCHIEF FINANCIAL OFFICER97,465Mar 13, 20240
Garland Jonathan ToddChief Commercial Officer8,763Aug 21, 20230
Dion GiseleDirector5,000Jun 16, 20230
RA Capital Healthcare Fund LPDirector, 10% Owner13,381,054IndirectMar 16, 20220
Ra Capital Management, L.P.Director, 10% Owner13,381,054IndirectMar 16, 20220
Kolchinsky PeterDirector, 10% Owner13,381,054IndirectMar 16, 20220
Shah Rajeev M.Director, 10% Owner13,381,054IndirectMar 16, 20220
RA Capital Nexus Fund II, L.P.Director13,381,054IndirectMar 16, 20220
Deng FengDirector443,800IndirectJul 27, 20210

Insider trades

Each row adds up one type of transaction in one Form 4 filing. Only open-market purchases (P) and sales (S) are shown by default; use the filters to see grants, option exercises and other codes.

Insider trades
Filed (ET)Trade dateFiling delayInsiderTransactionSharesAvg priceValueHolding changeFlags
Jul 27, 2021 (view filing)Jul 225 daysLatePoirson AllenSVP Marketing and Corp. Dev.PPurchase+1.50K$17.00+$25.5K+3.9%40.4K after
Jul 27, 2021 (view filing)Jul 225 daysLateDion GiseleDirectorPPurchase+5.00K$17.00+$85.0KNew position5.00K after
Jul 27, 2021 (view filing)Jul 225 daysLateBall JackDirectorPPurchase+3.00K$17.00+$51.0KNew position3.00K after
Jul 27, 2021 (view filing)Jul 225 daysLateBarnett ValerieGeneral CounselPPurchase+1.90K$17.00+$32.3KNew position1.90K after
Jul 29, 2021 (view filing)4:30 PM ETJul 272 daysRA Capital Healthcare Fund LP and 4 othersDirectorPPurchase+2.95M$17.00+$50.1MNew position1.19M after2 lots
Feb 9, 2022 (view filing)Feb 72 daysJiang WenbinPresident and CEOSSale−20.0K$14.40−$288.0K−0.3%7.89M after
Feb 14, 2022 (view filing)Feb 104 daysYan MingChief Technology OfficerSSale−20.0K$15.11−$302.1K−0.2%8.11M after2 lots
Feb 16, 2022 (view filing)7:39 PM ETFeb 14-162 daysRA Capital Healthcare Fund LP and 4 othersDirectorPPurchase+498.6K$14.89+$7.43M+5.2%10.1M after3 lots
Feb 22, 2022 (view filing)5:22 PM ETFeb 17-225 daysRA Capital Healthcare Fund LP and 4 othersDirectorPPurchase+547.4K$14.06+$7.70M+5.4%10.7M after3 lots
Feb 24, 2022 (view filing)Feb 222 daysYan MingChief Technology OfficerSSale−20.0K$13.44−$268.8K−0.2%8.09M after
Feb 25, 2022 (view filing)5:43 PM ETFeb 23-252 daysRA Capital Healthcare Fund LP and 4 othersDirectorPPurchase+420.4K$13.23+$5.56M+3.9%11.1M after3 lots
Mar 2, 2022 (view filing)5:29 PM ETFeb 28-Mar 22 daysRA Capital Healthcare Fund LP and 4 othersDirectorPPurchase+441.9K$12.95+$5.72M+4.0%11.5M after3 lots
Mar 8, 2022 (view filing)4:59 PM ETMar 4-84 daysRA Capital Healthcare Fund LP and 4 othersDirectorPPurchase+647.3K$12.74+$8.25M+5.6%12.2M after3 lots
Mar 8, 2022 (view filing)5:55 PM ETMar 71 dayJiang WenbinPresident and CEOSSale−20.0K$12.65−$253.1K−0.3%7.94M after2 lots
Mar 11, 2022 (view filing)5:27 PM ETMar 9-112 daysRA Capital Healthcare Fund LP and 4 othersDirectorPPurchase+634.6K$12.86+$8.16M+5.2%12.8M after3 lots
Mar 16, 2022 (view filing)5:10 PM ETMar 14-152 daysRA Capital Healthcare Fund LP and 4 othersDirector, 10% OwnerPPurchase+583.9K$12.31+$7.19M+4.6%13.4M after2 lots
Mar 23, 2022 (view filing)Mar 212 daysYan MingChief Technology OfficerSSale−20.0K$11.64−$232.8K−0.2%8.14M after
Apr 8, 2022 (view filing)Apr 71 dayJiang WenbinPresident and CEOSSale−20.0K$10.54−$210.8K−0.3%7.92M after
Apr 21, 2022 (view filing)Apr 192 daysYan MingChief Technology OfficerSSale−20.0K$10.34−$206.8K−0.2%8.12M after
May 12, 2022 (view filing)May 93 daysLateJiang WenbinPresident and CEOSSale−20.0K$8.01−$160.2K−0.3%7.90M after
May 20, 2022 (view filing)May 191 dayYan MingChief Technology OfficerSSale−20.0K$9.92−$198.4K−0.2%8.10M after
Jun 9, 2022 (view filing)Jun 72 daysJiang WenbinPresident and CEOSSale−20.0K$10.75−$215.0K−0.3%7.88M after
Jun 22, 2022 (view filing)Jun 211 dayYan MingChief Technology OfficerSSale−20.0K$10.06−$201.2K−0.2%8.08M after
Jul 8, 2022 (view filing)Jul 71 dayJiang WenbinPresident and CEOSSale−20.0K$11.19−$223.8K−0.3%7.86M after
Jul 20, 2022 (view filing)Jul 191 dayYan MingChief Technology OfficerSSale−20.0K$11.83−$236.6K−0.2%8.06M after
Aug 3, 2022 (view filing)Aug 12 daysJeanmonod PatrikChief Financial OfficerSSale−3.50K$12.80−$44.8K−3.6%95.0K after
Aug 10, 2022 (view filing)Aug 82 daysJiang WenbinPresident and CEOSSale−20.0K$15.09−$301.8K−0.3%7.84M after
Aug 19, 2022 (view filing)Aug 19Same dayYan MingChief Technology OfficerSSale−20.0K$13.62−$272.4K−0.2%8.05M after
Aug 25, 2022 (view filing)Aug 241 dayJeanmonod PatrikChief Financial OfficerSSale−3.50K$13.45−$47.1K−3.6%92.6K after
Sep 9, 2022 (view filing)Sep 72 daysJiang WenbinPresident and CEOSSale−20.0K$12.89−$257.8K−0.3%7.83M after
Sep 20, 2022 (view filing)Sep 191 dayYan MingChief Technology OfficerSSale−20.0K$12.42−$248.4K−0.2%8.03M after
Sep 28, 2022 (view filing)Sep 262 daysJeanmonod PatrikChief Financial OfficerSSale−3.50K$12.63−$44.2K−3.8%89.1K after
Oct 11, 2022 (view filing)Oct 74 daysJiang WenbinPresident and CEOSSale−20.0K$14.79−$295.8K−0.3%7.81M after
Oct 20, 2022 (view filing)Oct 191 dayYan MingChief Technology OfficerSSale−20.0K$14.42−$288.4K−0.2%8.01M after
Oct 25, 2022 (view filing)Oct 241 dayJeanmonod PatrikChief Financial OfficerSSale−3.50K$15.16−$53.1K−3.9%85.6K after
Nov 8, 2022 (view filing)Nov 71 dayJiang WenbinPresident and CEOSSale−20.0K$14.76−$295.2K−0.3%7.79M after
Nov 16, 2022 (view filing)5:53 PM ETNov 142 daysBall JackDirectorSSale−16.0K$14.69−$235.0K−84.2%3.00K after
Nov 22, 2022 (view filing)Nov 211 dayYan MingChief Technology OfficerSSale−20.0K$14.66−$293.2K−0.2%7.99M after
Nov 28, 2022 (view filing)Nov 253 daysJeanmonod PatrikChief Financial OfficerSSale−3.50K$14.30−$50.0K−4.0%83.1K after
Dec 9, 2022 (view filing)Dec 72 daysJiang WenbinPresident and CEOSSale−20.0K$11.86−$237.2K−0.3%7.76M after
Dec 20, 2022 (view filing)Dec 191 dayYan MingChief Technology OfficerSSale−20.0K$10.38−$207.6K−0.3%7.97M after
Dec 29, 2022 (view filing)Dec 272 daysJeanmonod PatrikChief Financial OfficerSSale−3.50K$9.77−$34.2K−4.2%79.6K after
Jan 10, 2023 (view filing)Jan 91 dayJiang WenbinPresident and CEOSSale−20.0K$10.66−$213.2K−0.3%7.74M after
Jan 20, 2023 (view filing)Jan 191 dayYan MingChief Technology OfficerSSale−20.0K$11.03−$220.6K−0.3%7.95M after
Jan 25, 2023 (view filing)Jan 241 dayJeanmonod PatrikChief Financial OfficerSSale−3.50K$11.05−$38.7K−4.4%76.1K after
Feb 7, 2023 (view filing)Feb 34 daysYan MingChief Technology OfficerSSale−1.09K$13.50−$14.7K0.0%7.95M after2 lots
Feb 8, 2023 (view filing)Feb 71 dayJiang WenbinPresident and CEOSSale−20.0K$13.19−$263.8K−0.3%7.72M after
Feb 10, 2023 (view filing)Feb 82 daysYan MingChief Technology OfficerSSale−897$13.53−$12.1K0.0%7.94M after
Feb 23, 2023 (view filing)Feb 212 daysYan MingChief Technology OfficerSSale−20.0K$10.94−$218.8K−0.3%7.93M after
Feb 28, 2023 (view filing)Feb 244 daysJeanmonod PatrikChief Financial OfficerSSale−3.00K$11.05−$33.1K−2.6%114.2K after