📄 What This Document Is 🗓️

This is C3is Inc.'s Annual Report (Form 20-F) for the fiscal year ended December 31, 2025. This filing is one of the most exhaustive types of SEC reports, meaning it covers not only the company's past performance but spends significant time detailing all the potential risks and challenges it faces in the future.

👉 Why it matters: Because the report is so focused on warnings, it tells you more about the industry and the company's vulnerabilities than it does about its actual current financial strength. It is a required disclosure that gives investors a complete picture of the landscape C3is operates in.

🛳️ What C3is Does and How It's Structured 🚢

In simple terms, C3is is a shipping company that owns a fleet of drybulk carriers and tankers, earning money by chartering these massive ships out to other companies (the charterers). These charterers pay C3is a fee (charter hire) to use the vessels to transport raw materials and commodities globally.

• Corporate Structure: C3is was incorporated in the Republic of the Marshall Islands on July 25, 2022. It currently acts as a holding company for two subsidiaries.
• Origin Story: The company underwent a "Spin-Off" from Imperial Petroleum on June 21, 2023. During this process, Imperial Petroleum contributed two initial drybulk carriers and $5,000,000 in cash to the company in exchange for common shares and preferred stock.
• Key Term: The company uses "deadweight tons" (dwt) to measure the size of its vessels. This is the usable cargo capacity of the ship, measured in metric tons.

👨‍💼 Leadership and Operational Dependencies ⚓

C3is’s operations are highly dependent on a few key external partners and internal personnel. The company explicitly details several relationships that, if disrupted, could severely impact its ability to run the business.

• The Manager: The company relies heavily on Brave Maritime, which serves as its commercial and technical manager. C3is pays a daily ship management fee of $440 per vessel. The report warns that if Brave Maritime fails, C3is might not be able to find a replacement manager on favorable terms.
• Management Team: The CEO is Dr. Diamantis Andriotis, and the CFO is Nina Pyndiah. The company notes that neither of them has prior experience as a CEO or CFO of a public company.
• Conflict of Interest (🔥): A major point of concern is the Vafias family. This family founded Brave Maritime and has affiliates (like Imperial Petroleum and Stealth Maritime) that own vessels and are involved in transactions with C3is. These relationships create inherent conflicts, potentially affecting the company's interests.

💰 Financial Size and Capital Structure 📊

The filing contains extensive information on the company’s capital structure and the historical complexity of its shares, which is common in private, rapidly growing companies.

• Shares Outstanding (as of December 31, 2025): There are 659,668 shares of Common Stock and 600,000 shares of Series A Convertible Preferred Stock.
• Stock History: The section details several massive share splits and reverse splits that occurred between 2023 and 2026 (e.g., 1-for-100, 1-for-2.5, 1-for-6, and 1-for-20 reverse splits).
  • 👉 Why it matters: These splits make the number of shares extremely complicated to track. They are crucial historical facts that show how the company has managed its capital over time, but they do not give a clear picture of the current ownership structure.

🛡️ Major Operational and Market Risks 🌊

The filing dedicates significant space to outlining the risks. These risks are not just warnings; they are core parts of the company’s legal disclosure. They signal that C3is operates in an inherently volatile and dangerous industry.

• The Fleet: C3is's fleet is described as being relatively small. Its average age as of March 31, 2026, was approximately 15.27 years. The company must acquire two product tankers, which are due to be delivered in 2026, to grow.
• Customer Concentration: The company derives a significant part of its revenue from a small number of charterers. The loss or inability of these key customers to pay charter hire could severely impact C3is's finances.
• Technological Obsolescence: Because the vessels are aging, they are less appealing to top-tier charterers, who prefer newer, more efficient ships—especially those powered by alternative fuels. This aging fleet risks lower charter rates and reduced resale value.
• Seasonality: The shipping industry is heavily seasonal. Demand for drybulk and tanker services varies greatly by time of year (e.g., stronger demand in the fall or spring months), leading to natural quarter-to-quarter volatility in revenue.

🌎 Geopolitical and External Risk Factors ⚠️

C3is operates globally, making it acutely sensitive to international events. These political and environmental factors represent major threats to revenue.

• Geopolitical Conflict: The company highlights risks from conflicts, such as the war in Ukraine and activity in the Red Sea. Operational disruptions, increased crew costs, and potential government claims due to smuggling are serious concerns.
• Sanctions and Embargoes: C3is must ensure its operations comply with U.S. and EU sanctions. Violating these laws, or even appearing to associate with sanctioned countries (like Cuba, Iran, and North Korea), could result in heavy penalties or damage the company's reputation and ability to raise capital.
• Economic Policy Risk: The company is highly exposed to China's evolving economic policies, which may reduce overall international trade and thus decrease demand for shipping materials and commodities.

🏦 Financial and Financing Challenges 💸

The ability to fund operations and growth is constrained by financial mechanisms and market conditions.

• Financing Future Expansion: C3is plans to finance the purchase of two product tankers with an aggregate purchase price of $39.78 million. This will require using cash on hand, cash flow from operations, and potentially raising additional funds through issuing new securities or bank debt.
• Covenant Restrictions: Future bank loans will likely come with "restrictive covenants" (rules). These covenants could limit the company's ability to: incur new debt, pay dividends, sell capital stock, or make capital expenditures.
• Interest Rate Risk: Any debt C3is takes on in the future will likely be advanced at a floating rate. If interest rates rise significantly, the cost of servicing that debt could adversely affect profitability and cash flow.

📈 Industry and Macroeconomic Forces ⚙️

The overall state of the global economy and the specific mechanics of the shipping business pose constant threats.

• Inflation: Inflation can raise the cost of essential inputs, like crew wages and operating materials. If C3is cannot raise its charter rates enough to offset these increasing costs, its profit margins will fall.
• Currency Risk: While C3is generates most of its revenues in U.S. dollars, some expenses are incurred in Euros. Fluctuations in the exchange rate between the Euro and the U.S. dollar could negatively impact the reported net income.
• Cybersecurity: The risk of a successful cyber-attack is cited as a material risk. Such an attack could disrupt operations, steal data, or halt financial systems, causing significant financial harm.

📞 Contacts and Resources 📧

For official queries, the filing provided the following contact information for the main executive offices:

• Company: C3is Inc.
• Address: 331 Kifissias Avenue, Kifissia 14561 Athens, Greece
• Contact Person: Dr. Diamantis Andriotis
• Telephone: (011) ( 30 ) ( 210 ) 625 0001
• Facsimile: (011) (30) (210) 625 0018

🧠 The Analogy

Running C3is is like being the captain of a small, beloved, but aging private yacht. You depend on a single skilled crew manager (Brave Maritime) who also happens to be related to your biggest friends and potential business partners (Vafias family). You are constantly juggling geopolitical storms (Red Sea, Ukraine) and global economic tides (China's policies). To stay afloat, you need to borrow money for new gear (the two tankers), but the bank makes you sign rules (covenants) that restrict how much you can spend or how fast you can sail, all while worrying that your existing yacht itself is starting to show its age and might sink soon.

🧩 Final Takeaway

C3is is a highly leveraged, deeply cyclical, and risk-intensive shipping operation that is structurally dependent on key family-linked managers and charterers. Its ability to expand and survive long-term depends entirely on successfully navigating increasing geopolitical turmoil and financing growth while managing an aging, vulnerable fleet.