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CTKB SCHEDULE 13G/A: SEC filing

Millennium Management LLC and affiliated entities

Filed with the SEC on · accession 0001104659-26-122222

CTKB filed a SCHEDULE 13G/A (schedule 13g/a) with the SEC on Nov 3, 2026. Millennium Management LLC and affiliated entities filed a Schedule 13G/A joint filing agreement regarding their beneficial ownership of Cytek Biosciences common stock. The stock moved +3.3% by the first close after the filing.

Summary of the filing

Millennium Management LLC and affiliated entities filed a Schedule 13G/A joint filing agreement regarding their beneficial ownership of Cytek Biosciences common stock. The filing is a routine administrative amendment with no disclosed change in ownership position.

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Key details

IssuerCytek Biosciences, Inc.
Reporting person / potential beneficial ownerMillennium Management LLC
Reporting personIntegrated Core Strategies (US) LLC
Reporting personMillennium Group Management LLC
Global general counsel, millennium management llcGil Raviv
Reporting personIsrael A. Englander

How CTKB stock reacted

Close before

$5.77

Nov 2, 2026

First close after

+3.29%

$5.96

5 trading days

—

Since filing

-6.41%

$5.40

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Frequently asked questions

What did CTKB file with the SEC on Nov 3, 2026?

CTKB filed a SCHEDULE 13G/A (SEC filing). Millennium Management LLC and affiliated entities filed a Schedule 13G/A joint filing agreement regarding their beneficial ownership of Cytek Biosciences common stock. The filing is a routine administrative amendment with no disclosed change in ownership position.

How do I read a SCHEDULE 13G/A?

A report the company filed with the SEC (the US market regulator). Start with the summary, then the key amounts and names. Compare it with the company’s earlier filings.

Why are SEC filings important?

Public companies must tell the SEC about anything that can change their value — results, leadership changes, big deals, new shares, bankruptcy. Filings are the official source, often before the news. A SCHEDULE 13G/A (schedule 13g/a): A report the company filed with the SEC (the US market regulator).

How did CTKB stock react to this filing?

CTKB closed at $5.77 before the filing and $5.96 on Nov 3, 2026 (+3.29%).

Other CTKB SEC filings

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