C3is Inc. filings document a foreign private issuer operating a dry bulk and tanker shipping business. Form 6-K reports provide formal records of unaudited operating and financial results, vessel acquisition agreements, charter and fleet information, and securities matters tied to the company's common shares on The Nasdaq Capital Market.
The filing record also covers capital-structure actions, including reverse stock splits, amendments to articles of incorporation, warrant exercise and adjustment provisions, Series A Convertible Preferred Stock adjustments, registered offerings and an at-the-market sales agreement. Registration-statement references and incorporated exhibits describe placement-agent agreements, prospectus supplements and share-based compensation registration matters.
C3is Inc., a Republic of the Marshall Islands company headquartered in Athens, Greece, filed Amendment No. 1 to its Form F-1 registration statement as an exhibits-only update. The amendment primarily refreshes legal exhibits, indemnification disclosures and undertakings connected to a planned public offering to commence as soon as practicable after effectiveness.
The company describes bylaw provisions that allow indemnification of directors and officers under Section 60 of the Marshall Islands Business Corporations Act, including advancement of expenses and the ability to purchase insurance, subject to good‑faith and best‑interest standards and to public‑policy limits under U.S. securities law. It also discloses that, in a June 21, 2023 spin‑off transaction, it issued 2,122 Common Shares and 600,000 shares of Series A Convertible Preferred Stock to Imperial Petroleum Inc., together with a $5,000,000 working capital contribution, in a transaction conducted outside the United States under Regulation S of the Securities Act.
C3is Inc. is registering 3,592,814 Units in a firm-commitment underwritten public offering, each Unit consisting of one common share and one Class F Warrant. The assumed public offering price is $1.67 per Unit, based on the Nasdaq closing price on July 20, 2026.
Each Class F Warrant is immediately exercisable for one common share at an initial exercise price equal to the Unit price, with reset features and a zero cash exercise option that can double the share output. If all Class F Warrants in the base deal and the 538,922-Unit over-allotment are exercised on a zero cash basis, up to 16,526,944 common shares could be issued with no additional cash to the company.
The company also offers pre-funded warrants (in lieu of common shares) within Units for investors constrained by 4.99% or 9.99% beneficial ownership limits, with a $0.01 exercise price. C3is is a Marshall Islands holding company providing drybulk and tanker shipping services, operating a five-vessel fleet totaling 260,671 dwt, pro forma six vessels and 311,431 dwt. Common shares outstanding were 1,547,612 as of June 30, 2026; this is a baseline figure, not the amount being offered.
C3is Inc. held its 2026 Annual Meeting of Stockholders, where Harry N. Vafias and George Xiradakis were re-elected as Class III directors for three-year terms expiring at the 2029 annual meeting. Stockholders also ratified Deloitte Certified Public Accountants, S.A. as independent auditors.
Stockholders approved amendments to the Restated Articles of Incorporation permitting one or more reverse stock splits of the common stock, at ratios from one-for-two up to one-for-1,000, with each such reverse split to be effected within three years at the Board’s discretion. Separately, on April 26, 2026 the company effected a one-for-seven reverse stock split, reducing outstanding common shares from approximately 3.8 million to approximately 541,082. No fractional shares were issued; instead, cash was paid in lieu of fractional shares. The par value and other terms of the common shares were unchanged. All share and earnings per share data for the three fiscal years ended December 31, 2025 have been retroactively adjusted, and an aggregate par value reduction of $5,655 was reclassified from capital stock to additional paid-in capital.
Imperial Petroleum Inc. has filed Amendment No. 11 to its Schedule 13D for C3is Inc., updating its ownership position in the company’s common stock. Imperial Petroleum now beneficially owns 7,171,543 shares of C3is common stock, with sole voting and dispositive power over these shares, representing 82.9% of the outstanding class.
The amendment reflects changes driven by an adjustment in the conversion price of C3is’s 5.0% Series A Cumulative Convertible Perpetual Preferred Stock to $2.0916 per share, as well as dilution from additional C3is shares issued under its at-the-market sales program. Imperial states it may buy more, hold, or sell shares over time, depending on its ongoing assessment of C3is and market conditions.
C3is Inc. is calling a 2026 annual stockholders meeting for July 17, 2026 in Athens, presenting its 2025 audited results and several key voting items. Stockholders will vote on electing two Class III directors, ratifying Deloitte as auditor for 2026, and approving one or more reverse stock splits of common stock at ratios between one-for-two and one-for-1,000, in total not exceeding one-for-1,000, to be used at the Board’s discretion within three years.
For 2025, C3is reported revenues of $34.8 million, down from $42.3 million in 2024, but net income of $10.5 million compared with a 2024 net loss of $2.7 million, helped by a large non-cash gain on warrants. Total assets were $98.5 million and stockholders’ equity was $95.1 million as of December 31, 2025, with 659,668 common shares and 600,000 Series A preferred shares outstanding. The company highlights that prior reverse stock splits have been used to regain and maintain compliance with Nasdaq’s $1.00 minimum bid price and seeks broader flexibility to implement further splits if needed. Holders of common and Series A preferred stock as of June 16, 2026 can vote by internet, phone, or mail.
C3is Inc. disclosure: TowerView LLC reports beneficial ownership of 35,000 shares of Common Stock, representing 6.5% of the class as of 05/18/2026. The filing shows TowerView holds sole voting and sole dispositive power over these shares.
C3is Inc. reports first-quarter 2026 results showing strong operating gains. Adjusted net income rose 358% year-over-year to $5.5 million, adjusted EBITDA increased 132% to $6.9 million, and revenue was $11.6 million. The company closed the quarter with $27 million cash and had 541,088 common shares outstanding as of May 15, 2026.
The fleet comprised five vessels with total capacity of 260,671 dwt; on a pro forma basis after one additional MR product tanker delivery, capacity would be ~311,431 dwt. Management notes no outstanding bank debt and that remaining acquisition payments for two product tankers are payable within one year from their acquisition agreements.
C3is Inc. files a prospectus supplement incorporating a Form 6-K that furnishes its unaudited financial and operating results for the quarter ended March 31, 2026.
The Company reported Adjusted Net Income of $5.5 million (358% year-over-year increase), Adjusted EBITDA of $6.9 million (132% increase), revenues of $11.6 million, and a cash balance of $27 million. Shares outstanding were 541,088 as of May 15, 2026. The fleet consists of five vessels with total capacity of 260,671 dwt, and management notes delivery of an additional MR product tanker will increase pro forma capacity to 311,431 dwt. The Company states it has no outstanding bank debt and that remaining acquisition payments for recently acquired vessels are payable within one year of the acquisition agreements.
C3is Inc. filed a Prospectus Supplement to its Form F-1 to update the registration with the Company’s Form 6-K and to furnish unaudited results for the quarter ended March 31, 2026.
The supplement incorporates a press release showing Adjusted Net Income of $5.5M (a 358% year-over-year increase), Adjusted EBITDA of $6.9M, revenues of $11.6M, operating cash flow of $9.3M, and a cash balance of $27M. The filing also states 541,088 common shares outstanding as of May 15, 2026. The supplement is qualified by, and should be read together with, the May 13, 2026 prospectus.
C3is Inc. files a Prospectus Supplement to its Form F-1 to incorporate a Form 6-K and to disclose unaudited Q1 2026 results. The Company reported $5.5 million of Adjusted Net Income (a 358% year-over-year rise), $6.9 million of Adjusted EBITDA, and revenues of $11.6 million for the quarter ended March 31, 2026.
The supplement also states 541,088 common shares outstanding as of May 15, 2026, a cash balance of $27 million, no outstanding bank debt, and delivery of one newly acquired product tanker in early Q2 with a second expected in Q3 2026.