Companies / Cytek Biosciences, Inc.
Cytek Biosciences, Inc.
Nasdaq: CTKBCIK 1831915FREMONT, CA
Financials · FY2025
Ownership
130.0M shares outstanding · as of Jul 31, 2026
Ownership
| Insiders | 8.23% | 10,700,764 |
| Institutions | 57.99% | 75,380,015 |
| Public float | 33.78% | 43,902,474 |
% of common shares outstanding (exact, from the latest cover-page filing). Institutions are quarterly 13F snapshots; insiders reflect current officers & directors.
Insiders 9
View all →| Insider | % of shares | Shares |
|---|---|---|
Jiang WenbinCEOPRESIDENT AND CEO · Director | 4.17% | 5,422,683 |
Yan MingCHIEF TECHNOLOGY OFFICER · Director | 3.78% | 4,915,933 |
Barnett ValerieCHIEF LEGAL OFFICER | 0.10% | 134,436 |
McCombe William D.Chief Financial Officer | 0.07% | 94,687 |
Neff Deborah JDirector | 0.05% | 59,679 |
Busque PhilippeSVP, GLOBAL SALES AND SERVICES | 0.03% | 35,687 |
Chin RichardDirector | 0.02% | 22,392 |
Holder MichaelDirector | 0.01% | 15,267 |
Muir Glenn PDirector | — | — |
Institutional holders 161
View all →| Holder | Value | % of shares |
|---|---|---|
| $42.43M | 7.37% | |
| $37.75M | 5.75% | |
| $37.58M | 5.73% | |
| $33.62M | 5.12% | |
| $27.50M | 4.84% | |
| $25.36M | 4.46% | |
| $13.37M | 2.04% | |
| $12.39M | 2.18% | |
| $11.37M | 1.97% | |
| $10.47M | 1.59% |
Activity
Jun 30, 2026View all →
InsidersInstitutions
Who's accumulating and trimming this stock (13F).| Date | Actor | Action | Security | Value | Shares Δ | Position after | Impact |
|---|---|---|---|---|---|---|---|
| Q2 2026 as of | BlackRock, Inc. 13F manager | Trim | Common stock | $-33.64M | -7.6M -44.22% | 9,578,643 7.37% of shares | medium |
| Q2 2026 as of | State Street Corporation 13F manager | Trim | Common stock | $-7.00M | -1.6M -38.12% | 2,566,121 1.97% of shares | medium |
| Q1 2026 as of | Millennium Management LLC 13F manager | Add | Common stock | $6.73M | +1.5M +32.39% | 6,291,798 4.84% of shares | medium |
| Q1 2026 as of | Boston Partners 13F manager | Add | Common stock | $3.47M | +794K +15.86% | 5,802,773 4.46% of shares | low |
| Q4 2025 as of | Bank of America Corp /De 13F manager | Add | Common stock | $3.46M | +686K +403.15% | 856,161 0.66% of shares | low |
| Q4 2023 as of | Barclays PLC 13F manager | Add | Common stock | $1.28M | +140K +285.01% | 189,343 0.15% of shares | low |
| Q3 2024 as of | Barclays PLC 13F manager | Add | Common stock | $858.2K | +155K +333.55% | 201,359 0.15% of shares | low |
| Q2 2025 as of | Barclays PLC 13F manager | Add | Common stock | $799.2K | +235K +153.76% | 387,908 0.30% of shares | low |
5%+ ownership events
Schedule 13D / 13G
| Filer | Stance | % of class |
|---|---|---|
| Vanguard Group Inc | Passive13G/A | — |
| Millennium Management LLC | Passive13G/A | — |
| Millennium Management LLC | Passive13G | — |
Securities
via CUSIP / OpenFIGI
| Symbol | Type | CUSIP |
|---|---|---|
| CTKB | — | 23285D109 |