Schedule 13G ownership disclosure

C3IS INC

Common Stock, $0.01 par value · CUSIP: Y18284169

Event date: 2025-12-11

Filing-level shares
443,213.00
Percent of class
9.99%
  • L1 Capital Global Opportunities Master Fund, Ltd.

    Shares: 443,213.00 · Class: 9.99%

Amounts are as disclosed in this filing. Schedule type alone does not establish investment intent.

Source: SEC EDGAR filing

Filing metadata

Accession number
0001079973-25-001866
Form type
SCHEDULE 13G
Filer
C3is Inc.
CIK
CIK 1951067
Filed
Dec 17, 2025
Reporting period
Dec 11, 2025
Description
Schedule 13G beneficial ownership

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