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Data sources

Public disclosures only. Scores flag unusual patterns and are not evidence of wrongdoing. Not investment advice.

RH CHAIN…
OverviewFollow the MoneyDaily BriefLiveCongressCorporate InsidersGovernment MoneyPolitical InfluenceInstitutionsWashington NetworkFollow the PowerDisclosure ClockAI InvestigatorWatchlistConvergenceINSIDER AlphaSignal ledgerHistorical ReplayRobinhood ChainProofTradingTokenProAccountMethodologyMatch reviewLaunch readiness
01Overview02Follow the Money03Daily Brief04Live05Congress06Corporate Insiders07Government Money08Political Influence09Institutions10Washington Network11Follow the Power12Disclosure Clock13AI Investigator14Watchlist
ConvergenceINSIDER AlphaSignal ledgerHistorical ReplayRobinhood ChainProofTradingTokenProAccountMethodologyMatch reviewLaunch readiness
OverviewFollow the MoneyDaily BriefLiveCongressCorporate InsidersGovernment MoneyPolitical InfluenceInstitutionsWashington NetworkFollow the PowerDisclosure ClockAI InvestigatorWatchlistConvergenceINSIDER AlphaSignal ledgerHistorical ReplayRobinhood ChainProofTradingTokenProAccountMethodologyMatch reviewLaunch readiness
Data sources
SEC FORM 44h ago
HOUSE PTR4h ago
SEC 13F4h ago
ROBINHOOD CHAIN4h ago
Public company

CTKBCytek Biosciences, Inc.

CIK 0001831915

EDGAR filingsOpen in network
Disclosed transactions60
Buys / sells0 / 0
Max Insider Score21
Connections6with evidence

CTKB · disclosed activity on price

Disclosed transactions

ScoreActorSecuritySideValueExecutedDisclosedLagSourceEvidence
9
YM
Yan MingDirector, CHIEF TECHNOLOGY OFFICER
CTKBCytek Biosciences, Inc.
Tax withholding
F$8,303
1,778 sh
Aug 18, 2026Aug 20, 2026
traded Aug 18, 2026
+2dSEC FORM 4

Evidence

Verified connections

  • ← Insider ofevidence
    Feuchtwang IlanChief Legal Officer, Secretary · Aug 12, 2026
  • ← Insider ofevidence
    McCombe William D.Chief Financial Officer · Nov 20, 2025
  • ← Insider ofevidence
    Yan MingDirector, CHIEF TECHNOLOGY OFFICER · Nov 20, 2025
  • ← Insider ofevidence
    Busque PhilippeSVP, GLOBAL SALES AND SERVICES · Nov 20, 2025
9
MD
McCombe William D.Chief Financial Officer
CTKBCytek Biosciences, Inc.
Tax withholding
F
$9,858
2,111 sh
Aug 18, 2026
Aug 20, 2026
traded Aug 18, 2026
+2d
SEC FORM 4

Evidence

9
YM
Yan MingDirector, CHIEF TECHNOLOGY OFFICER
CTKBCytek Biosciences, Inc.
Tax withholding
F$7,010
1,501 sh
Aug 18, 2026Aug 20, 2026
traded Aug 18, 2026
+2dSEC FORM 4

Evidence

13
JW
Jiang WenbinDirector, PRESIDENT AND CEO
CTKBCytek Biosciences, Inc.
Option exercise
M—
22.1K sh
Aug 18, 2026Aug 20, 2026
traded Aug 18, 2026
+2dSEC FORM 4

Evidence

21
YM
Yan MingDirector, CHIEF TECHNOLOGY OFFICER
CTKBCytek Biosciences, Inc.
Option exercise
M—
7,363 sh
Aug 18, 2026Aug 20, 2026
traded Aug 18, 2026
+2dSEC FORM 4

Evidence

9
JW
Jiang WenbinDirector, PRESIDENT AND CEO
CTKBCytek Biosciences, Inc.
Option exercise
M—
11.8K sh
Aug 18, 2026Aug 20, 2026
traded Aug 18, 2026
+2dSEC FORM 4

Evidence

9
YM
Yan MingDirector, CHIEF TECHNOLOGY OFFICER
CTKBCytek Biosciences, Inc.
Option exercise
M—
6,162 sh
Aug 18, 2026Aug 20, 2026
traded Aug 18, 2026
+2dSEC FORM 4

Evidence

9
MD
McCombe William D.Chief Financial Officer
CTKBCytek Biosciences, Inc.
Tax withholding
F$21K
4,392 sh
Aug 18, 2026Aug 20, 2026
traded Aug 18, 2026
+2dSEC FORM 4

Evidence

13
MD
McCombe William D.Chief Financial Officer
CTKBCytek Biosciences, Inc.
Option exercise
M—
16.0K sh
Aug 18, 2026Aug 20, 2026
traded Aug 18, 2026
+2dSEC FORM 4

Evidence

13
JW
Jiang WenbinDirector, PRESIDENT AND CEO
CTKBCytek Biosciences, Inc.
Option exercise
M—
29.0K sh
Aug 18, 2026Aug 20, 2026
traded Aug 18, 2026
+2dSEC FORM 4

Evidence

13
JW
Jiang WenbinDirector, PRESIDENT AND CEO
CTKBCytek Biosciences, Inc.
Option exercise
M—
57.2K sh
Aug 18, 2026Aug 20, 2026
traded Aug 18, 2026
+2dSEC FORM 4

Evidence

9
JW
Jiang WenbinDirector, PRESIDENT AND CEO
CTKBCytek Biosciences, Inc.
Option exercise
M—
57.2K sh
Aug 18, 2026Aug 20, 2026
traded Aug 18, 2026
+2dSEC FORM 4

Evidence

13
YM
Yan MingDirector, CHIEF TECHNOLOGY OFFICER
CTKBCytek Biosciences, Inc.
Option exercise
M—
5,525 sh
Aug 18, 2026Aug 20, 2026
traded Aug 18, 2026
+2dSEC FORM 4

Evidence

9
JW
Jiang WenbinDirector, PRESIDENT AND CEO
CTKBCytek Biosciences, Inc.
Tax withholding
F$25K
5,382 sh
Aug 18, 2026Aug 20, 2026
traded Aug 18, 2026
+2dSEC FORM 4

Evidence

9
MD
McCombe William D.Chief Financial Officer
CTKBCytek Biosciences, Inc.
Tax withholding
F$25K
5,401 sh
Aug 18, 2026Aug 20, 2026
traded Aug 18, 2026
+2dSEC FORM 4

Evidence

13
MD
McCombe William D.Chief Financial Officer
CTKBCytek Biosciences, Inc.
Option exercise
M—
13.1K sh
Aug 18, 2026Aug 20, 2026
traded Aug 18, 2026
+2dSEC FORM 4

Evidence

9
JW
Jiang WenbinDirector, PRESIDENT AND CEO
CTKBCytek Biosciences, Inc.
Option exercise
M—
22.1K sh
Aug 18, 2026Aug 20, 2026
traded Aug 18, 2026
+2dSEC FORM 4

Evidence

9
JW
Jiang WenbinDirector, PRESIDENT AND CEO
CTKBCytek Biosciences, Inc.
Tax withholding
F$13K
2,869 sh
Aug 18, 2026Aug 20, 2026
traded Aug 18, 2026
+2dSEC FORM 4

Evidence

13
MD
McCombe William D.Chief Financial Officer
CTKBCytek Biosciences, Inc.
Option exercise
M—
6,320 sh
Aug 18, 2026Aug 20, 2026
traded Aug 18, 2026
+2dSEC FORM 4

Evidence

13
MD
McCombe William D.Chief Financial Officer
CTKBCytek Biosciences, Inc.
Option exercise
M—
16.0K sh
Aug 18, 2026Aug 20, 2026
traded Aug 18, 2026
+2dSEC FORM 4

Evidence

9
YM
Yan MingDirector, CHIEF TECHNOLOGY OFFICER
CTKBCytek Biosciences, Inc.
Tax withholding
F$16K
3,463 sh
Aug 18, 2026Aug 20, 2026
traded Aug 18, 2026
+2dSEC FORM 4

Evidence

9
YM
Yan MingDirector, CHIEF TECHNOLOGY OFFICER
CTKBCytek Biosciences, Inc.
Option exercise
M—
14.2K sh
Aug 18, 2026Aug 20, 2026
traded Aug 18, 2026
+2dSEC FORM 4

Evidence

13
MD
McCombe William D.Chief Financial Officer
CTKBCytek Biosciences, Inc.
Option exercise
M—
13.1K sh
Aug 18, 2026Aug 20, 2026
traded Aug 18, 2026
+2dSEC FORM 4

Evidence

21
JW
Jiang WenbinDirector, PRESIDENT AND CEO
CTKBCytek Biosciences, Inc.
Option exercise
M—
11.8K sh
Aug 18, 2026Aug 20, 2026
traded Aug 18, 2026
+2dSEC FORM 4

Evidence

12
JW
Jiang WenbinDirector, PRESIDENT AND CEO
CTKBCytek Biosciences, Inc.
Tax withholding
F$98K
21.0K sh
Aug 18, 2026Aug 20, 2026
traded Aug 18, 2026
+2dSEC FORM 4

Evidence

9
YM
Yan MingDirector, CHIEF TECHNOLOGY OFFICER
CTKBCytek Biosciences, Inc.
Tax withholding
F$6,286
1,346 sh
Aug 18, 2026Aug 20, 2026
traded Aug 18, 2026
+2dSEC FORM 4

Evidence

9
YM
Yan MingDirector, CHIEF TECHNOLOGY OFFICER
CTKBCytek Biosciences, Inc.
Option exercise
M—
5,525 sh
Aug 18, 2026Aug 20, 2026
traded Aug 18, 2026
+2dSEC FORM 4

Evidence

9
JW
Jiang WenbinDirector, PRESIDENT AND CEO
CTKBCytek Biosciences, Inc.
Tax withholding
F$33K
7,062 sh
Aug 18, 2026Aug 20, 2026
traded Aug 18, 2026
+2dSEC FORM 4

Evidence

9
JW
Jiang WenbinDirector, PRESIDENT AND CEO
CTKBCytek Biosciences, Inc.
Option exercise
M—
29.0K sh
Aug 18, 2026Aug 20, 2026
traded Aug 18, 2026
+2dSEC FORM 4

Evidence

13
MD
McCombe William D.Chief Financial Officer
CTKBCytek Biosciences, Inc.
Option exercise
M—
6,320 sh
Aug 18, 2026Aug 20, 2026
traded Aug 18, 2026
+2dSEC FORM 4

Evidence

13
YM
Yan MingDirector, CHIEF TECHNOLOGY OFFICER
CTKBCytek Biosciences, Inc.
Option exercise
M—
6,162 sh
Aug 18, 2026Aug 20, 2026
traded Aug 18, 2026
+2dSEC FORM 4

Evidence

9
YM
Yan MingDirector, CHIEF TECHNOLOGY OFFICER
CTKBCytek Biosciences, Inc.
Option exercise
M—
7,363 sh
Aug 18, 2026Aug 20, 2026
traded Aug 18, 2026
+2dSEC FORM 4

Evidence

13
YM
Yan MingDirector, CHIEF TECHNOLOGY OFFICER
CTKBCytek Biosciences, Inc.
Option exercise
M—
14.2K sh
Aug 18, 2026Aug 20, 2026
traded Aug 18, 2026
+2dSEC FORM 4

Evidence

9
FI
Feuchtwang IlanChief Legal Officer, Secretary
CTKBCytek Biosciences, Inc.
Grant or award
A—
127.1K sh
Aug 10, 2026Aug 12, 2026
traded Aug 10, 2026
+2dSEC FORM 4

Evidence

9
FI
Feuchtwang IlanChief Legal Officer, Secretary
CTKBCytek Biosciences, Inc.
Grant or award
A—
241.4K sh
Aug 10, 2026Aug 12, 2026
traded Aug 10, 2026
+2dSEC FORM 4

Evidence

12
YM
Yan MingDirector, CHIEF TECHNOLOGY OFFICER
CTKBCytek Biosciences, Inc.
Gift
G—
135.9K sh
Jun 12, 2026Jun 16, 2026
traded Jun 12, 2026
+4dSEC FORM 4

Evidence

9
YM
Yan MingDirector, CHIEF TECHNOLOGY OFFICER
CTKBCytek Biosciences, Inc.
Option exercise
M—
3,683 sh
May 18, 2026May 20, 2026
traded May 18, 2026
+2dSEC FORM 4

Evidence

9
YM
Yan MingDirector, CHIEF TECHNOLOGY OFFICER
CTKBCytek Biosciences, Inc.
Option exercise
M—
4,908 sh
May 18, 2026May 20, 2026
traded May 18, 2026
+2dSEC FORM 4

Evidence

9
YM
Yan MingDirector, CHIEF TECHNOLOGY OFFICER
CTKBCytek Biosciences, Inc.
Tax withholding
F$4,345
1,224 sh
May 18, 2026May 20, 2026
traded May 18, 2026
+2dSEC FORM 4

Evidence

9
YM
Yan MingDirector, CHIEF TECHNOLOGY OFFICER
CTKBCytek Biosciences, Inc.
Tax withholding
F$3,262
919 sh
May 18, 2026May 20, 2026
traded May 18, 2026
+2dSEC FORM 4

Evidence

9
MD
McCombe William D.Chief Financial Officer
CTKBCytek Biosciences, Inc.
Tax withholding
F$14K
3,839 sh
May 18, 2026May 20, 2026
traded May 18, 2026
+2dSEC FORM 4

Evidence

9
MD
McCombe William D.Chief Financial Officer
CTKBCytek Biosciences, Inc.
Tax withholding
F$11K
3,122 sh
May 18, 2026May 20, 2026
traded May 18, 2026
+2dSEC FORM 4

Evidence

13
MD
McCombe William D.Chief Financial Officer
CTKBCytek Biosciences, Inc.
Option exercise
M—
6,320 sh
May 18, 2026May 20, 2026
traded May 18, 2026
+2dSEC FORM 4

Evidence

9
MD
McCombe William D.Chief Financial Officer
CTKBCytek Biosciences, Inc.
Tax withholding
F$8,051
2,268 sh
May 18, 2026May 20, 2026
traded May 18, 2026
+2dSEC FORM 4

Evidence

13
MD
McCombe William D.Chief Financial Officer
CTKBCytek Biosciences, Inc.
Option exercise
M—
8,700 sh
May 18, 2026May 20, 2026
traded May 18, 2026
+2dSEC FORM 4

Evidence

13
MD
McCombe William D.Chief Financial Officer
CTKBCytek Biosciences, Inc.
Option exercise
M—
8,700 sh
May 18, 2026May 20, 2026
traded May 18, 2026
+2dSEC FORM 4

Evidence

9
YM
Yan MingDirector, CHIEF TECHNOLOGY OFFICER
CTKBCytek Biosciences, Inc.
Option exercise
M—
4,108 sh
May 18, 2026May 20, 2026
traded May 18, 2026
+2dSEC FORM 4

Evidence

17
BP
Busque PhilippeSVP, GLOBAL SALES AND SERVICES
CTKBCytek Biosciences, Inc.
Option exercise
M—
1,024 sh
May 18, 2026May 20, 2026
traded May 18, 2026
+2dSEC FORM 4

Evidence

13
BP
Busque PhilippeSVP, GLOBAL SALES AND SERVICES
CTKBCytek Biosciences, Inc.
Option exercise
M—
1,473 sh
May 18, 2026May 20, 2026
traded May 18, 2026
+2dSEC FORM 4

Evidence

9
JW
Jiang WenbinDirector, PRESIDENT AND CEO
CTKBCytek Biosciences, Inc.
Option exercise
M—
19.3K sh
May 18, 2026May 20, 2026
traded May 18, 2026
+2dSEC FORM 4

Evidence

9
BP
Busque PhilippeSVP, GLOBAL SALES AND SERVICES
CTKBCytek Biosciences, Inc.
Tax withholding
F$5,055
1,424 sh
May 18, 2026May 20, 2026
traded May 18, 2026
+2dSEC FORM 4

Evidence

13
BP
Busque PhilippeSVP, GLOBAL SALES AND SERVICES
CTKBCytek Biosciences, Inc.
Option exercise
M—
2,416 sh
May 18, 2026May 20, 2026
traded May 18, 2026
+2dSEC FORM 4

Evidence

13
BP
Busque PhilippeSVP, GLOBAL SALES AND SERVICES
CTKBCytek Biosciences, Inc.
Option exercise
M—
2,416 sh
May 18, 2026May 20, 2026
traded May 18, 2026
+2dSEC FORM 4

Evidence

13
MD
McCombe William D.Chief Financial Officer
CTKBCytek Biosciences, Inc.
Option exercise
M—
10.7K sh
May 18, 2026May 20, 2026
traded May 18, 2026
+2dSEC FORM 4

Evidence

9
BP
Busque PhilippeSVP, GLOBAL SALES AND SERVICES
CTKBCytek Biosciences, Inc.
Tax withholding
F$2,201
620 sh
May 18, 2026May 20, 2026
traded May 18, 2026
+2dSEC FORM 4

Evidence

13
BP
Busque PhilippeSVP, GLOBAL SALES AND SERVICES
CTKBCytek Biosciences, Inc.
Option exercise
M—
5,551 sh
May 18, 2026May 20, 2026
traded May 18, 2026
+2dSEC FORM 4

Evidence

9
BP
Busque PhilippeSVP, GLOBAL SALES AND SERVICES
CTKBCytek Biosciences, Inc.
Option exercise
M—
5,551 sh
May 18, 2026May 20, 2026
traded May 18, 2026
+2dSEC FORM 4

Evidence

9
MD
McCombe William D.Chief Financial Officer
CTKBCytek Biosciences, Inc.
Option exercise
M—
10.7K sh
May 18, 2026May 20, 2026
traded May 18, 2026
+2dSEC FORM 4

Evidence

9
BP
Busque PhilippeSVP, GLOBAL SALES AND SERVICES
CTKBCytek Biosciences, Inc.
Option exercise
M—
1,024 sh
May 18, 2026May 20, 2026
traded May 18, 2026
+2dSEC FORM 4

Evidence

9
BP
Busque PhilippeSVP, GLOBAL SALES AND SERVICES
CTKBCytek Biosciences, Inc.
Tax withholding
F$934
263 sh
May 18, 2026May 20, 2026
traded May 18, 2026
+2dSEC FORM 4

Evidence

  • ← Insider ofevidence
    Barnett ValerieCHIEF LEGAL OFFICER · Nov 20, 2025
  • ← Insider ofevidence
    Jiang WenbinDirector, PRESIDENT AND CEO · Nov 20, 2025