CISS SCHEDULE 13G/A: SEC filing

An institutional holder

Filed with the SEC on Nov 6, 2026 · accession 0001595888-26-000140

CISS filed a SCHEDULE 13G/A (schedule 13g/a) with the SEC on Nov 6, 2026. An institutional holder filed an amended Schedule 13G for C3is Inc., indicating a change in passive ownership position. The stock moved +12.7% by the first close after the filing.

Summary of the filing

An institutional holder filed an amended Schedule 13G for C3is Inc., indicating a change in passive ownership position. The filing does not disclose a specific ownership percentage or share count in the available text.

For details, click here →

Key details

IssuerC3is Inc.

How CISS stock reacted

Close before

$0.38

Nov 5, 2026

First close after

+12.67%

$0.43

5 trading days

—

Since filing

—

✦ Ask GOAX AI about this filing — what it means for CISS, what changed since its last filings and what to watch next.

Try it free for 7 days

🔔 Want to stay updated on new SEC filings for CISS?

Click here

Frequently asked questions

What did CISS file with the SEC on Nov 6, 2026?

CISS filed a SCHEDULE 13G/A (SEC filing). An institutional holder filed an amended Schedule 13G for C3is Inc., indicating a change in passive ownership position. The filing does not disclose a specific ownership percentage or share count in the available text.

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 CISS stock react to this filing?

CISS closed at $0.38 before the filing and $0.43 on Nov 6, 2026 (+12.67%).

Other CISS SEC filings

Get alerts when CISS files with the SEC, plus live charts, key levels and news for 13,000+ stocks.

Try SEPT free for 7 days

CISS overview CISS analysis CISS news Latest SEC filings