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. registers for issuance up to 4,672 common shares upon exercise of outstanding Class D Warrants and up to 1 common share upon exercise of outstanding Class E Warrants. The Class D exercise price is $83.66 per share, subject to adjustment based on the lowest daily VWAP during a five-day adjustment period after each six-month anniversary of the December 12, 2025 original issuance date, with a floor equal to 20% of the Nasdaq Minimum Price on the applicable anniversary. Class D Warrants expire December 12, 2030; Class E Warrants do not expire.
If all Class D Warrants are exercised for cash at the current exercise price, C3is estimates net proceeds of approximately $0.4 million; cash exercise of all Class E Warrants is estimated to yield approximately $0.056. Warrants may expire without exercise or be exercised on a cashless basis. C3is intends to use proceeds for capital expenditures, including acquisitions of additional vessels not yet identified, and other general corporate purposes. The share amounts are presented on a split-adjusted basis.
C3is Inc. updated its registration for up to $4,465,067 of common shares issuable upon exercise of its remaining Class C-1 and Class C-2 warrants. The prospectus identifies aggregate exercise prices of $38,439 for Class C-1 and $4,426,628 for Class C-2; the warrants are exercisable for 15,728 and 1,810,926 shares, respectively, at a current exercise price of $2.4444 per share. Both classes expire March 19, 2029.
If all warrants are exercised for cash, C3is estimates net proceeds of approximately $38,439 from Class C-1 and $4,426,628 from Class C-2. It intends to use net proceeds for capital expenditures, including acquisitions of additional vessels not yet identified, and other general corporate purposes. Some or all warrants may expire without exercise or be exercised on a cashless basis; Class C-1 warrants also permit an alternative cashless exercise option.
C3is Inc. registers issuance of up to $6,533,324 of common stock upon exercise of outstanding Class B-1 and Class B-2 Warrants. The warrants were issued with an underwritten offering that closed on January 23, 2024. The Class B-1 Warrants are exercisable for 65,291 shares and the Class B-2 Warrants for 2,607,488 shares, each at a current exercise price of $2.4444 per share; both classes expire on January 23, 2029. Class B-1 Warrants also permit an alternative cashless exercise, and the exercise prices and share counts may be adjusted for certain events.
C3is estimates net proceeds of approximately $159,580 if all Class B-1 Warrants are exercised for cash and approximately $6,373,744 if all Class B-2 Warrants are exercised for cash. Some or all warrants may expire or be exercised on a cashless basis. The company intends to use net proceeds for capital expenditures, including acquisitions of additional vessels it has not yet identified, and other general corporate purposes. The prospectus estimates 6,117,442 common shares outstanding immediately after the offering, assuming all warrants are exercised for cash at the current exercise price as of September 30, 2026. C3is owns six vessels with a total capacity of 311,431 deadweight tons.
C3is Inc.’s amended beneficial-ownership disclosure reports that Alta Partners LLC beneficially owned 46,773 shares, or 3.072% of the class. The amount consists of 12,000 common shares and 34,773 shares issuable upon exercise of warrants. Alta Partners reported sole voting and dispositive power over 46,773 shares in each category, with shared voting and dispositive power of zero. Steven Cohen signed as Alta Partners’ Managing Member.
C3is Inc.'s reporting persons—Ascent Partners Fund LLC, Ascent Partners LLC, Dominion Capital LLC, Dominion Capital GP LLC, Eagle Claw Corp., Masada Group Holdings LLC, Mikhail Gurevich, Gennadiy Gurevich and Alon Brenner—stated that, as of August 27, 2026, they had exercised all warrants to purchase and sold all their remaining common shares; none then beneficially owned C3is common stock. They characterized the submission as an exit filing for each reporting person. Mikhail Gurevich is Eagle Claw's chief investment officer, Gennadiy Gurevich is its president, and Alon Brenner manages Masada Group Holdings LLC, Ascent Partners LLC and Ascent Partners Fund LLC. Their reported cover-page figures show 0 beneficially owned shares, 0.00% ownership, and zero sole and shared voting and dispositive power.
C3is Inc. (CISS) reports that TowerView LLC beneficially owns 0 shares of its common stock, or 0.0% of the class. The signature identifies Daniel R Tisch as a member.
C3is Inc. reported revenue of $35,620,403 and net income of $13,183,829 for the six months ended June 30, 2026, versus $19,408,005 and $2,588,391 in the same period of 2025. Operating cash flow was $12,828,512, up from $2,947,983; management cited a 125.1% increase in the average TCE rate, to $36,769 from $16,335.
As of September 25, 2026, its six-vessel fleet had aggregate capacity of 311,431 dwt. Clean Fury and Clean Reaper were delivered on April 3 and August 6, 2026. Their purchase prices of $22.90 million and $16.88 million are due in January 2027; the stated total is $39.8 million. Their sellers were companies affiliated with family members of the Non-Executive Chairman. As of June 30, 2026, cash was $737,874, time deposits were $32,510,000, and the company reported no bank debt.
After June 30, 2026, C3is received $5.6 million net from a registered unit offering and $4.3 million net from issuing 2.0 million common shares under its at-the-market agreement. Management believes internal cash flows can fund operations and vessel payments for at least 12 months, subject to successful equity offerings or bank borrowing and no major, sustained downturn in relevant markets.
C3is Inc. (CISS) has a new significant shareholder disclosure, as Timothy P. Horne reported beneficial ownership of 135,000 shares of the company’s common stock. This represents 9.07% of the outstanding common shares, all held with sole voting and dispositive power.
C3is Inc. (symbol CISS) has an updated ownership report showing that Imperial Petroleum Inc. beneficially owns 6,136,475 shares of C3is common stock, representing 80.5% of the outstanding common shares, with sole voting and dispositive power over all of these shares.
This amendment reflects changes arising from an adjustment of the conversion price of C3is’s 5.0% Series A Cumulative Convertible Perpetual Preferred Stock to $2.4444. The adjustment resulted from C3is’s 1-for-40 reverse stock split of its common stock effective August 19, 2026 and related warrant exercise price adjustments through August 26, 2026. Imperial Petroleum states it acquired its position in connection with a spin-off distribution and plans to review its investment on an ongoing basis, with flexibility to buy more, hold, or sell shares depending on business, market and other factors.
C3is Inc. (CISS) files a prospectus supplement to its Form F-1 and concurrently reports strong unaudited results for the quarter and six months ended June 30, 2026. The supplement incorporates an August 27, 2026 Form 6-K into the F-1 and other registration statements.
For the first half of 2026, net income was $13.18 million, up 409% from the first half of 2025, while adjusted net income was $15.28 million, up 562%. EBITDA reached $16.65 million and adjusted EBITDA $18.74 million, reflecting higher voyage revenues and an enlarged fleet. Time charter equivalent rate for the first half rose to $36,769 from $16,335.
Voyage revenues for the six months increased to $35.62 million from $19.41 million. As of August 26, 2026, C3is had 1,487,970 common shares outstanding and had issued 15,113 shares under its ATM program for $2.6 million of gross proceeds. All prefunded and Class F warrants from the July 28, 2026 underwritten offering had been fully exercised, and the company reports a debt‑free fleet of six vessels with total capacity of 311,431 dwt.