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CYCN SCHEDULE 13G: SEC filing

Adar1 Capital Management, LLC and Daniel Schneeberger

Filed with the SEC on · accession 0001104659-26-097419

CYCN filed a SCHEDULE 13G (schedule 13g) with the SEC on Aug 14, 2026. A report the company filed with the SEC (the US market regulator). The stock moved -3.1% by the first close after the filing.

Summary of the filing

Adar1 Capital Management, LLC and Daniel Schneeberger filed a Schedule 13G joint filing agreement regarding their beneficial ownership of Cyclerion Therapeutics common stock.

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Key details

Filer / beneficial ownerAdar1 Capital Management, LLC
IssuerCyclerion Therapeutics, Inc.
Manager, adar1 capital management, llcDaniel Schneeberger

How CYCN stock reacted

Close before

$27.37

Aug 13, 2026

First close after

-3.07%

$26.53

5 trading days

+4.09%

$28.49

Since filing

-14.07%

$23.52

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Frequently asked questions

What did CYCN file with the SEC on Aug 14, 2026?

CYCN filed a SCHEDULE 13G (SEC filing). Adar1 Capital Management, LLC and Daniel Schneeberger filed a Schedule 13G joint filing agreement regarding their beneficial ownership of Cyclerion Therapeutics common stock.

How do I read a SCHEDULE 13G?

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 (schedule 13g): A report the company filed with the SEC (the US market regulator).

How did CYCN stock react to this filing?

CYCN closed at $27.37 before the filing and $26.53 on Aug 14, 2026 (-3.07%). Five trading days later: $28.49 (+4.09%).

Other CYCN SEC filings

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