Skip to main content
C3is Inc. logo

C3is Inc. — Investor Relations & Filings

Ticker · CISS ISIN · MHY182841517 US Transportation and storage
Open in API
Filings indexed 223 across all filing types
Latest filing 2026-05-18 Regulatory Filings
Country US United States of America
Listing US CISS

About C3is Inc.

https://c3is.pro/

C3is Inc. is a holding company that provides international seaborne transportation services. The company specializes in the dry bulk sector, offering transportation solutions to a diverse client base of charterers. These clients include major national and private industrial users, commodity producers, and traders. C3is Inc. operates its fleet through its subsidiaries to transport dry bulk commodities.

Recent filings

Filing Released Lang Actions
424B3
Regulatory Filings Classification · 30% confidence The document is a prospectus supplement filed under SEC Rule 424(b)(3) and includes a Form 6-K report. It is a regulatory compliance filing relating to an F-1 registration and supplementing the base prospectus with updated financial results. It is not an earnings release, management discussion, or capital markets presentation, nor is it a proxy statement or voting results. It most closely fits the catch-all Regulatory Filings category.
2026-05-18 English
424B3
Regulatory Filings Classification · 85% confidence The document is a Prospectus Supplement (Rule 424(b)(3)) to a Form F-1 registration statement and includes a Form 6-K submission with an attached press release of quarterly financial results. It is not a standalone annual or interim report, nor is it merely an earnings release; rather, it is a regulatory filing updating the prospectus. Under our taxonomy, such SEC submissions that don’t fit other specific categories are classified as Regulatory Filings (RNS).
2026-05-18 English
424B3
Earnings Release Classification · 87% confidence The document is a Form 424B3 prospectus supplement which primarily furnishes a Form 6-K that attaches the Company’s unaudited quarterly financial and operating results press release for the three months ended March 31, 2026. The exhibit (Exhibit 99.1) is the initial announcement of first-quarter results with key financial highlights (revenues, EBITDA, net income, etc.). This aligns with the definition of an Earnings Release (ER). Q1 2026
2026-05-18 English
424B3
Capital/Financing Update Classification · 80% confidence The document is titled “Prospectus Supplement No. 1 (to Prospectus dated May 13, 2026)” filed under Rule 424(b)(3) in connection with the Company’s Form F-1 registration (Reg. No. 333-272939). It updates and supplements the prospectus by attaching a Form 6-K press release with first quarter 2026 financial and operating results, including share counts, ATM sales agreement details, reverse stock splits, and capital structure items. As a supplement to a registration/prospectus for issuing securities and disclosing financing terms and capital structure changes, it is best classified as a Capital/Financing Update.
2026-05-18 English
6-K
Earnings Release Classification · 85% confidence The document is a Form 6-K filed by a foreign private issuer, and it expressly attaches a press release dated May 18, 2026 announcing unaudited financial and operating results for the quarter ended March 31, 2026. It does not include full financial statements as an interim report; rather, it is the initial announcement of quarterly results. This matches the definition for an Earnings Release (ER). Q1 2026
2026-05-18 English
6-K - C3is Inc. (0001951067) (Filer)
Capital/Financing Update Classification · 95% confidence The document is a Form 6-K filed by a foreign private issuer, C3IS Inc., reporting a reverse stock split and related amendments to its articles of incorporation. It includes details about the reverse split ratio, trading adjustments, and new stock certificate forms. The document is 3990 characters long, which is relatively short and primarily serves as an announcement of a corporate action (reverse stock split) and related capital structure changes. It does not contain comprehensive financial statements or detailed financial analysis. The content fits the description of a Capital/Financing Update (CAP) as it relates to changes in the company's capital structure and stock adjustments. It is not an Annual Report, Interim Report, or Earnings Release, nor is it a regulatory filing of a different nature. Therefore, the appropriate classification is Capital/Financing Update (CAP).
2026-04-27 English

Browse filings by year

5 years

Report missing filing

Can't find a specific document? Let us know and we'll add it within 24 hours.

We will notify you once the filing is added.
Report sent
Thank you. We will check the data and update it shortly.