SCHEDULE: Athanasios Tsiakmakis Boosts C3is Inc. Stake to 14.36%
Schedule 13G Filing
Athanasios Tsiakmakis has reported a 14.36% beneficial ownership stake in C3is Inc., holding 155,000 shares of common stock.
Summary
- Athanasios Tsiakmakis reported beneficial ownership of 155,000 shares of C3is Inc. common stock, par value $0.01 per share.
- This ownership represents 14.36% of the class of securities.
- The percentage of class is calculated based on 1,079,208 shares of Common Stock issued and outstanding as of August 31, 2025, as reported by C3is Inc. in its Form F-1 Registration Statement filed on September 3, 2025.
- The reporting person has sole voting power and sole dispositive power over all 155,000 shares.
- The securities were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer.
Sentiment
Score: 5
Explanation: The filing is a factual disclosure of beneficial ownership, providing neutral information without explicit positive or negative operational or financial news.
Positives
- Athanasios Tsiakmakis holds a significant 14.36% stake in C3is Inc., indicating a substantial personal investment in the company.
- The reporting person certified that the securities were not acquired for the purpose of changing or influencing control, suggesting a passive investment intent.
Future Outlook
No forward-looking statements or guidance are provided in this beneficial ownership report.
Management Comments
- Athanasios Tsiakmakis certified that "the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under §§ 240.14a-11."
Industry Context
This filing indicates a significant individual shareholder's stake in C3is Inc., a company whose primary business is not detailed in this specific filing but is generally known to be in the shipping industry. Such a substantial passive stake can be viewed as a vote of confidence in the company's long-term prospects within its sector.
Comparison to Industry Standards
- This filing is a standard disclosure of beneficial ownership and does not contain information for comparison to industry-specific operational or financial benchmarks.
Stakeholder Impact
- Shareholders are informed of a significant individual investor holding a substantial stake, which could influence market perception and trading activity.
Key Dates
| Date | Description |
|---|---|
| 08/31/2025 | Date for the calculation of outstanding shares (1,079,208 shares) used to determine the percentage of class. |
| 09/03/2025 | Date C3is Inc. filed its Form F-1 Registration Statement with the SEC. |
| 09/16/2025 | Date of event which required the filing of this statement (beneficial ownership exceeded 5%). |
| 09/17/2025 | Date the Reporting Person may have been deemed to beneficially own more than 10% of the outstanding shares of Common Stock. |
| 10/27/2025 | Date as of which the reported ownership is stated on the cover page. |
| 10/28/2025 | Date the Schedule 13G was signed by Athanasios Tsiakmakis. |
Keywords
C3is Inc., Athanasios Tsiakmakis, Schedule 13G, Beneficial Ownership, Common Stock, Shareholder, SEC Filing, Y18284169
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