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CISS SCHEDULE 13G: SEC filing

A Schedule 13G was

Filed with the SEC on · accession 0001235976-26-000001

CISS filed a SCHEDULE 13G (schedule 13g) with the SEC on Sep 3, 2026. A Schedule 13G was filed regarding C3is Inc. (CISS), indicating a passive ownership position by an institutional or other holder. The stock moved -1.4% by the first close after the filing.

Summary of the filing

A Schedule 13G was filed regarding C3is Inc. (CISS), indicating a passive ownership position by an institutional or other holder. The filing directory does not disclose specific ownership percentages or holder identity in the provided text.

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Key details

Subject companyC3is Inc.

How CISS stock reacted

Close before

$1.40

Sep 2, 2026

First close after

-1.43%

$1.38

5 trading days

+3.57%

$1.45

Since filing

-69.19%

$0.43

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Frequently asked questions

What did CISS file with the SEC on Sep 3, 2026?

CISS filed a SCHEDULE 13G (SEC filing). A Schedule 13G was filed regarding C3is Inc. (CISS), indicating a passive ownership position by an institutional or other holder. The filing directory does not disclose specific ownership percentages or holder identity in the provided text.

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 CISS stock react to this filing?

CISS closed at $1.40 before the filing and $1.38 on Sep 3, 2026 (-1.43%). Five trading days later: $1.45 (+3.57%).

Other CISS SEC filings

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