Core Viewpoint - C3is Inc. reported a decline in revenues and operational performance for the third quarter of 2025 compared to the same period in 2024, primarily due to the dry-docking of its Aframax tanker and a decrease in Time Charter Equivalent (TCE) rates. However, the company remains financially stable with no debt and a focus on enhancing its core business and exploring new growth opportunities [11][5][9]. Operational and Financial Highlights - The company achieved revenues of $4.8 million for Q3 2025, down from $9.3 million in Q3 2024, with a daily TCE of $8,733, a 33% decrease from $13,084 in the previous year [5][31]. - Fleet operational utilization was 67.7% in Q3 2025, significantly lower than 90.2% in Q3 2024, mainly due to the Aframax tanker being idle during dry-docking [5][21]. - Net income for Q3 2025 was $2.7 million, with an EBITDA of $4.2 million, while for the nine months ended September 30, 2025, net income was $5.3 million and EBITDA was $10.3 million, reflecting increases of 281% and 245% respectively compared to the same period in 2024 [11][9][28]. Fleet and Vessels - C3is Inc. owns four vessels, including three Handysize dry bulk carriers and one Aframax oil tanker, with a total fleet capacity of 213,464 deadweight tons [16]. - The company completed the dry-docking of its Aframax tanker, Afrapearl II, in August 2025, which took 24 days and cost $1.7 million [5][11]. Financial Position - As of September 30, 2025, the company had cash and cash equivalents of $6.6 million and met all capital expenditure commitments totaling $59.2 million without resorting to bank loans [5][11]. - The company recorded a non-cash adjustment of $6.7 million as "Gain on Warrants" for Q3 2025, reflecting changes in the fair value of warrants [5][11]. Market Context - The shipping market remains volatile due to geopolitical conditions, but major economies continue to grow, leading to rising trade volumes [11]. - The company aims to maintain a debt-free balance sheet while enhancing its operational capabilities and exploring new business opportunities [11].

Core Viewpoint - C3is Inc. is set to release its third quarter financial results on November 18, 2025, before the market opens in New York, followed by a conference call to discuss the results and company outlook [1]. Company Overview - C3is Inc. is a ship-owning company that provides seaborne transportation services to dry bulk and tanker charterers, serving major national and private industrial users, commodity producers, and traders [3]. - As of the end of Q3 2025, the company owns three Handysize dry bulk carriers and one Aframax oil tanker, with a total capacity of 213,464 deadweight tons (dwt) [3]. - The company's shares are listed on the Nasdaq Capital Market under the symbol "CISS" [3]. Conference Call Details - The conference call will take place on November 18, 2025, at 10:00 am ET, where management will present the financial results and discuss operations and outlook [1]. - A live and archived webcast of the conference call will be available on the C3is Inc. website, with participants advised to register approximately 10 minutes prior to the start [2].

Table of Contents As filed with the Securities and Exchange Commission on November 3, 2025. Registration No. 333-290011 UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 Puglisi & Associates 850 Library Avenue, Suite 204 Newark, Delaware 19711 (302) 738-6680 (Name, address and telephone number of agent for service) Amendment No. 1 To Form F-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 C3IS INC. (Exact name of registrant as specified in its charter) Republic of the Marshall I ...

Core Points - C3is Inc. has completed a registered direct offering of 800,000 shares of Common Stock at a price of $2.50 per share, raising approximately $2.0 million in gross proceeds [1][2][3] - The net proceeds from the offering will be utilized for general corporate purposes and working capital [2] - Aegis Capital Corp. served as the exclusive placement agent for the offering, with legal counsel provided by Goodwin Procter LLP and Kaufman & Canoles, P.C. [3] Company Overview - C3is Inc. is a ship-owning company that provides dry bulk and crude oil seaborne transportation services [5] - The company owns four vessels, including three handysize drybulk carriers with a total capacity of 97,664 deadweight tons (dwt) and an Aframax oil tanker with a capacity of approximately 115,800 dwt, resulting in a total fleet capacity of 213,464 dwt [5] - C3is Inc.'s shares are listed on the Nasdaq Capital Market under the symbol "CISS" [5]

Core Points - C3is Inc. has entered into definitive agreements for a registered direct offering of 800,000 shares of Common Stock at a price of $2.50 per share, totaling approximately $2.0 million [1][2] - The transaction is expected to close around October 9, 2025, pending customary closing conditions [2] - The net proceeds will be used for general corporate purposes and working capital [2] Company Overview - C3is Inc. is a ship-owning company that provides dry bulk and crude oil seaborne transportation services [6] - The company owns four vessels, including three handysize dry bulk carriers with a total capacity of 97,664 deadweight tons (dwt) and one Aframax oil tanker with a capacity of approximately 115,800 dwt, resulting in a total fleet capacity of 213,464 dwt [6] - C3is Inc.'s shares are listed on the Nasdaq Capital Market under the symbol "CISS" [6] Offering Details - Aegis Capital Corp. is acting as the exclusive placement agent for the offering [3] - The offering is made pursuant to an effective shelf registration statement previously filed with the U.S. Securities and Exchange Commission (SEC) [3] - A final prospectus supplement and accompanying prospectus will be filed with the SEC, providing more details about the offering [3][4]

Table of Contents As filed with the Securities and Exchange Commission on September 3, 2025. Registration No. 333- UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 Form F-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 C3IS INC. (Exact name of registrant as specified in its charter) Republic of the Marshall Islands 4412 N/A (State or other jurisdiction of incorporation or organization) (Primary Standard Industrial Classification Code Number) 331 Kifissias Avenue Kifissia 14561 ...

Financial Performance - For the second quarter of 2025, the company reported a net loss of $5.3 million, primarily attributed to a noncash item, specifically an unrealized loss on the fair value of warrants amounting to $6.4 million [4]. Strategic Outlook - The company plans to discuss its strategy and the overall market conditions during the earnings call, indicating a focus on future performance and expectations [3].

Financial Data and Key Metrics Changes - For Q2 2025, the company reported a net loss of $5.3 million, primarily due to a non-cash unrealized loss of $6.4 million on warrants, while adjusted net income was $1.1 million [3][16] - The net income for the first half of 2025 was $2.6 million, with voyage revenues of $10.7 million for Q2 2025, a slight decrease of 1% from $10.8 million in Q2 2024 [13][20] - The cash balance decreased by 82% to $2.3 million from $12.6 million at the end of 2024, attributed to the payment of $15.1 million for the Eco Spitfire and remaining bunkers [16] Business Line Data and Key Metrics Changes - Voyage costs increased to $4.7 million in Q2 2025 from $3.1 million in Q2 2024, due to the addition of the Eco Spitfire [14] - Operating expenses rose to $2.4 million in Q2 2025 from $2 million in Q2 2024, again due to the new vessel [15] - General and administrative expenses increased to $677,000 in Q2 2025 from $603,000 in Q2 2024, mainly due to stock-based compensation [15] Market Data and Key Metrics Changes - The dry bulk market saw a modest decline of approximately 1% in seaborne trade, with a 5% year-on-year drop in Chinese iron imports [4] - Coal and iron ore imports declined significantly, while grain trade experienced increased ton-mile demand due to trade route realignments [5] - The Aframax tanker market faced bearish conditions due to geopolitical tensions, with oil prices spiking in June 2025 but normalizing thereafter [9] Company Strategy and Development Direction - The company aims for disciplined growth through selective acquisitions of quality non-Chinese-built vessels, focusing on short to medium-term charters [18] - The strategy includes maintaining a high-quality fleet to reduce operating costs and improve safety, which provides a competitive advantage [18] - The company has increased its fleet capacity by over 230% since inception without incurring any bank debt, enhancing financial flexibility [20] Management's Comments on Operating Environment and Future Outlook - Management highlighted the resilience of the company amidst geopolitical factors, environmental regulations, and shifting demand patterns [20] - The company is confident in its adaptability to changing market conditions, which will support the development of existing core businesses and exploration of new growth opportunities [21] - The management emphasized the importance of high standards of safety and reliability in maintaining customer relationships [12] Other Important Information - The company successfully completed the dry docking of the Afrapearl II in August 2025 and settled the final balance of $14.6 million for the Eco Spitfire in April 2025 [20] - The fleet consists of three Handysize dry bulk carriers and one Aframax oil tanker, with an average age of 14.5 years [11] Q&A Session Summary - No specific questions or answers were documented in the provided content, indicating that the call may have concluded without a formal Q&A session.

Financial Data and Key Metrics Changes - For Q2 2025, the company reported a net loss of $5.3 million, primarily due to a non-cash unrealized loss of $6.4 million on warrants, while adjusted net income was $1.1 million [3][16] - The net income for the first half of 2025 was $2.6 million, with voyage revenues of $10.7 million for Q2 2025, a slight decrease of 1% from $10.8 million in Q2 2024 [13][20] - The cash balance decreased by 82% to $2.3 million compared to $12.6 million at the end of 2024, attributed to the payment of the remaining balance for the Eco Spitfire [16] Business Line Data and Key Metrics Changes - Voyage costs increased to $4.7 million in Q2 2025 from $3.1 million in Q2 2024, driven by the addition of the Eco Spitfire [13] - Operating expenses rose to $2.4 million in Q2 2025 from $2 million in Q2 2024, again due to the new vessel [14] - General and administrative expenses increased to $677,000 in Q2 2025 from $603,000 in Q2 2024, mainly due to stock-based compensation [14] Market Data and Key Metrics Changes - The dry bulk market saw a modest decline of approximately 1% in seaborne trade, with a 5% year-on-year drop in Chinese iron imports [4] - Coal and iron ore imports have declined significantly, while grain trade experienced increased ton-mile demand due to trade route realignments [5] - The Aframax tanker market faced bearish conditions due to geopolitical tensions, but there was a seasonal increase in demand [9] Company Strategy and Development Direction - The company aims for disciplined growth with a focus on acquiring quality non-Chinese-built vessels and maintaining high operational standards [18] - The strategy includes equity issuances for selective acquisitions and chartering to high-quality clients [18] - The company has increased its fleet capacity by over 230% since inception without incurring bank debt, enhancing financial flexibility [20] Management's Comments on Operating Environment and Future Outlook - Management highlighted the resilience of the company amidst geopolitical factors and environmental regulations affecting the shipping industry [20] - The company is confident in its adaptability to changing market conditions and plans to explore new growth opportunities [21] - The performance so far has demonstrated a solid foundation for future growth despite industry challenges [20] Other Important Information - The company successfully completed the dry docking of the Afrapearl II in August 2025 and has no vessels built in Chinese shipyards, mitigating tariff impacts [20] - The fleet consists of three Handysize dry bulk carriers and one Aframax oil tanker, with an average age of 14.5 years [11] Q&A Session Summary Question: What are the impacts of geopolitical tensions on the shipping market? - Management noted that geopolitical tensions have created both challenges and opportunities, particularly in the Aframax tanker market due to shifts in crude flows and sanctions [9][10] Question: How does the company plan to manage its fleet and operational costs? - The company emphasized maintaining a high-quality fleet through regular inspections and a comprehensive maintenance program, which helps reduce operating costs [18]

Core Viewpoint - C3is Inc. reported its financial and operational results for Q2 and the first half of 2025, highlighting a decrease in revenues and TCE rates, alongside a net loss for the quarter but a net income for the six-month period [1][8][9]. Operational and Financial Highlights - The company operates handysize dry bulk carriers on short-term charters, generating steady cash flows, while its Aframax tanker operates in the spot market with current voyage charter rates around $25,000 per day [4]. - Fleet operational utilization was 78% for Q2 2025, down from 87.7% in Q2 2024, primarily due to idle days of the Aframax tanker [4][19]. - Revenues for Q2 2025 were $10.7 million, a slight decrease from $10.8 million in Q2 2024, with a daily TCE of $16,466, down 31% from $23,938 in the same period last year [4][29]. - The company reported a net loss of $5.3 million for Q2 2025, with an EBITDA of $(3.7) million and a loss per share of $8.78 [4][30]. - For the first half of 2025, net income was $2.6 million, with earnings per share of $0.52, contrasting with a net loss of $7.97 million in the first half of 2024 [8][12]. Financial Performance - Adjusted net income for Q2 2025 was $1.1 million, a 62% decrease from $2.9 million in Q2 2024, while adjusted EBITDA was $2.8 million, down 43% from $4.9 million [4][12]. - The company settled a $14.6 million balance for the bulk carrier Eco Spitfire in April 2025, funded by operations and equity offerings [4][8]. - Total voyage revenues for the first half of 2025 were $19.4 million, down from $23.6 million in the same period of 2024, primarily due to lower average TCE rates [6][12]. - The average number of vessels owned increased from 3.3 in the first half of 2024 to 4.0 in 2025, contributing to increased operational expenses [6][12]. Industry Context - The maritime shipping industry is experiencing significant changes due to geopolitical factors, environmental regulations, and demand fluctuations, yet C3is Inc. has maintained solid performance with a fleet capacity increase of over 230% since inception without incurring bank debt [9][10]. - The company emphasizes its fully deleveraged position, enhancing financial flexibility and providing a strong foundation for future growth [10].