SecSonar.com

C3is Inc. (CISS)

C3is Inc. at a glance — key fundamentals, SEC filings, insider buying and selling, and earnings dates.

C3is Inc. (CISS) is a Marine Shipping company based in GR with a market capitalization of $402.2K. Revenue declined 17.8% year-over-year and the company generated $3.8M in free cash flow. This page tracks CISS's SEC filings, insider buying and selling, earnings dates, and key fundamentals in one place.

GR · IPO Jun 14, 2023

Valuation

Valuation & price

$2.49 · as of May 26, 2026 · -99.6% vs 52w high

0.0

P/E ratio

Latest-FY diluted EPS

0.00

P/B ratio

Market cap ÷ book equity

—

Dividend yield

Price — last 12 months

$517$259$1.68Jul 25Dec 25Jul 26Jul 7, 25$462.00Jul 9, 25$464.80Jul 11, 25$464.80Jul 15, 25$487.20Jul 17, 25$509.60Jul 21, 25$516.60Jul 23, 25$491.40Jul 25, 25$469.00Jul 29, 25$450.80Jul 31, 25$448.00Aug 4, 25$442.40Aug 6, 25$491.40Aug 11, 25$435.40Aug 13, 25$452.20Aug 15, 25$462.00Aug 19, 25$483.00Aug 21, 25$428.40Aug 25, 25$429.80Aug 27, 25$420.00Aug 29, 25$421.40Sep 3, 25$401.80Sep 5, 25$292.60Sep 9, 25$287.00Sep 11, 25$319.20Sep 16, 25$371.00Sep 18, 25$329.00Sep 22, 25$320.60Sep 24, 25$309.40Sep 26, 25$301.00Sep 30, 25$299.60Oct 2, 25$312.20Oct 6, 25$309.40Oct 8, 25$361.20Oct 10, 25$312.20Oct 14, 25$308.00Oct 16, 25$289.80Oct 21, 25$305.20Oct 23, 25$303.80Oct 27, 25$296.80Oct 29, 25$302.40Oct 31, 25$303.80Nov 4, 25$270.20Nov 6, 25$275.80Nov 10, 25$273.00Nov 12, 25$273.00Nov 14, 25$231.00Nov 18, 25$235.20Nov 20, 25$205.80Nov 25, 25$228.20Nov 28, 25$247.80Dec 2, 25$250.60Dec 4, 25$263.20Dec 8, 25$246.40Dec 10, 25$239.40Dec 12, 25$35.00Dec 16, 25$32.13Dec 18, 25$31.85Dec 22, 25$32.41Dec 24, 25$30.38Dec 29, 25$30.10Jan 2, 26$31.43Jan 6, 26$33.04Jan 8, 26$31.92Jan 12, 26$27.23Jan 14, 26$19.32Jan 16, 26$17.92Jan 21, 26$19.74Jan 23, 26$11.83Jan 27, 26$13.02Jan 29, 26$10.08Feb 2, 26$13.65Feb 4, 26$10.64Feb 9, 26$11.62Feb 11, 26$11.55Feb 13, 26$10.57Feb 18, 26$11.69Feb 20, 26$13.58Feb 24, 26$12.32Feb 26, 26$10.50Mar 2, 26$10.78Mar 4, 26$10.15Mar 6, 26$8.68Mar 10, 26$7.98Mar 12, 26$7.77Mar 17, 26$5.25Mar 19, 26$6.05Mar 23, 26$5.89Mar 25, 26$5.99Mar 27, 26$5.60Mar 31, 26$5.79Apr 2, 26$5.71Apr 7, 26$5.53Apr 9, 26$5.57Apr 13, 26$5.74Apr 15, 26$5.91Apr 17, 26$5.61Apr 22, 26$5.52Apr 24, 26$2.96Apr 28, 26$3.59Apr 30, 26$3.41May 4, 26$3.48May 6, 26$3.46May 8, 26$3.29May 12, 26$3.31May 14, 26$3.19May 18, 26$3.17May 20, 26$2.63May 22, 26$2.36May 28, 26$2.32Jun 1, 26$2.22Jun 3, 26$2.21Jun 5, 26$2.14Jun 9, 26$2.24Jun 11, 26$2.27Jun 15, 26$2.25Jun 17, 26$2.22Jun 22, 26$2.12Jun 24, 26$1.72Jun 26, 26$1.68Jul 2, 26$1.79
$1.6452-week range$569.80
Loading valuation history…

Fundamentals

Key fundamentals

$402.2K

Market cap

-17.8%

Revenue growth (YoY)

12.8%

Gross margin

$3.8M

Free cash flow (USD)

-$14.9M

Net debt

Net cash position

472.5%

Share dilution

3/5

Graham criteria passed

Defensive-investor screen

Industrials

Sector

Trajectory

Long-term trends

Revenue by year

2021 → 2025

FY 2021$6.3MFY 2022$3.3MFY 2023$28.7MFY 2024$42.3MFY 2025$34.8M
$6.3M$34.8M

Free cash flow by year

2021 → 2025

FY 2021$-11.6MFY 2022$-38.3MFY 2023$1.3MFY 2024$23.4MFY 2025$3.8M
-$11.6M$3.8M

Gross margin by year

2021 → 2025

FY 202160.3%FY 202222.8%FY 202341.8%FY 202432.2%FY 202512.8%
60.3%12.8%

Value screen

Graham defensive-investor tests

Computing the scorecard — refreshing any stale inputs…

0

Insider buys · 90 days

0

Insider sells · 90 days

Earnings

Last reported: May 18, 2026 (EPS $5.24)

Next expected: not yet scheduled

On the tape

Recent SEC & insider activity

  • Annual reportAnnual Report FiledJun 22, 2026Filing
  • Annual reportAnnual Report FiledMay 18, 2026Filing
  • 6-K filingReverse Stock SplitApr 27, 2026Filing
  • 6-K filingReverse Stock SplitApr 23, 2026Filing
  • Annual report20-F FiledApr 22, 2026Filing

Questions

Frequently asked questions

What is C3is Inc.'s market cap?

C3is Inc. (CISS) has a market capitalization of $402.2K.

What is CISS's P/E ratio?

CISS trades at a price-to-earnings ratio of 0.0, based on its latest fiscal-year diluted earnings per share and the most recent cached price.

What is CISS's price-to-book (P/B) ratio?

CISS trades at 0.00 times book value per share.

When did C3is Inc. last report earnings?

CISS last reported earnings on May 18, 2026; the next date is not yet scheduled.

Are insiders buying CISS stock?

SEC Form 4 filings show no open-market insider buys at C3is Inc. in the last 90 days (0 sells).

Same arena

Related companies in Marine Shipping

ICON

Icon Energy Corp.

$562.7K

RUBI

Rubico Inc.

$3.2K

NCT

Intercont (Cayman) Limited Ordinary shares

$3M

TOPS

Top Ships Inc.

$4.3M

HTCO

High-Trend International Group

$14.4M

CTRM

Castor Maritime Inc.

$18.1M

Timeline

Every filing, insider trade & earnings on a price-anchored timeline

Filing Analyzer

Search the actual 10-K / 10-Q text with AI research angles

News

Latest press coverage in one feed

Data: SEC EDGAR filings and cached fundamental data; prices and ratios use the most recent cached quote and statements (may lag by up to a day). Educational and research purposes only. Not investment advice.