Company Analysis

C3is Inc. (CISS)

Nasdaq: CISS · Deep Sea Foreign Transportation of Freight · Athens, GR · filing with the SEC since 2022
Grade5.0
◀ Past 4.4● Present 6.2▶ Future 4.1
3 est.

Filings

322 filings since 2017 beside 5 insider forms · Non-accelerated filer and emerging growth company · read from EDGAR on Nov 13, 2026
Due nextNon-accelerated filer and emerging growth company
20-F Annual report, foreign filer for the fiscal year ending Dec 31, 2026Foreign filers have four months after the fiscal year ends. by Apr 30, 2027

A deadline is the latest date the SEC's rules allow for its filer category. It is not a forecast of the day the company files.

Filings a yearinsider forms included
1408387116
20222023202420252026

2026 counts to Nov 13, 2026.

SEC letters: 19 in the last 36 months, the newest Dec 9, 2025.
Insider forms 5

Insider forms (3, 4, 5 and 144) are counted each year but not listed here; the people and their trades are on the Ownership tab.

FiledFormWhat it is, in plain wordsPeriodAsk
Nov 12, 2026 SCHEDULE 13G/A Large holder update, amended
Nov 12, 2026 SCHEDULE 13G/A Large holder update, amended
Nov 9, 2026 424B3 Shelf offering
Nov 9, 2026 424B3 Shelf offering
Nov 9, 2026 424B3 Shelf offering
Nov 9, 2026 6-K Interim report, foreign filer
Nov 6, 2026 SCHEDULE 13G/A Large holder update, amended
Nov 5, 2026 424B3 Shelf offering
Nov 5, 2026 424B3 Shelf offering
Nov 5, 2026 424B3 Shelf offering
Nov 5, 2026 6-K Interim report, foreign filer
Oct 16, 2026 EFFECT Registration effective
Oct 16, 2026 EFFECT Registration effective
Oct 16, 2026 EFFECT Registration effective
Oct 5, 2026 SCHEDULE 13G/A Large holder update, amended
Oct 5, 2026 POS AM Registration amended after taking effect
Oct 5, 2026 POS AM Registration amended after taking effect
Oct 5, 2026 POS AM Registration amended after taking effect
Oct 5, 2026 SCHEDULE 13G/A Large holder update, amended
Oct 2, 2026 SCHEDULE 13G/A Large holder update, amended
Sep 29, 2026 6-K Interim report, foreign filer Jun 30, 2026
Sep 3, 2026 SCHEDULE 13G Large holder notice
Aug 28, 2026 SCHEDULE 13D/A Activist holder update, amended
Aug 27, 2026 424B3 Shelf offering
Aug 27, 2026 424B3 Shelf offering
Aug 27, 2026 424B3 Shelf offering
Aug 27, 2026 424B3 Shelf offering
Aug 27, 2026 424B3 Shelf offering
Aug 27, 2026 6-K Interim report, foreign filer
Aug 19, 2026 SCHEDULE 13G Large holder notice
Aug 19, 2026 424B3 Shelf offering
Aug 19, 2026 424B3 Shelf offering
Aug 19, 2026 424B3 Shelf offering
Aug 19, 2026 424B3 Shelf offering
Aug 19, 2026 424B3 Shelf offering
Aug 19, 2026 6-K Interim report, foreign filer
Aug 17, 2026 6-K Interim report, foreign filer
Aug 14, 2026 SCHEDULE 13G/A Large holder update, amended
Aug 14, 2026 SCHEDULE 13G/A Large holder update, amended
Aug 4, 2026 SCHEDULE 13G Large holder notice
40 of 322 shown

Every row opens the filing on EDGAR. The plain words are the site's own for each form and each 8-K item; the complete history, insider forms included, is on EDGAR.

SI Assistanton CISS · research, not advice