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C3is (CISS) Stock Analysis & Price (Updated Oct 16, 2026, 4:00 PM ET)

Updated Oct 16, 2026, 4:00 PM ET

What changed since yesterday

CISS slides 5.5% to $0.53. Closed at $0.53, -5.50% vs the prior close of $0.56. Day range $0.51–$0.58, opened at $0.56.

Last close$0.53-5.50%
Day range0.51–0.58
Open0.56
Volume684.01K
52-week range0.51–13,608.00
Avg volume (20d)1.55M

CISS daily analysis β€” what happened

A plain-English, data-only note written after every US trading day. Newest first; older days stay archived below.

Oct 16, 2026 β€” CISS slides 5.5% to $0.53
Oct 15, 2026 β€” CISS jumps 6.6% to $0.56
Oct 14, 2026 β€” CISS slides 15.5% to $0.53, a 52-week low, 4 down days in a row
Oct 13, 2026 β€” CISS slides 8.1% to $0.63, a 52-week low, 3 down days in a row
Oct 12, 2026 β€” CISS slides 13.0% to $0.68, a 52-week low on 4.3x normal volume
Oct 9, 2026 β€” CISS slides 4.9% to $0.78, a 52-week low
Oct 8, 2026 β€” CISS jumps 3.3% to $0.82
Oct 7, 2026 β€” CISS slides 10.3% to $0.80, a 52-week low
Oct 6, 2026 β€” CISS jumps 3.0% to $0.89
Oct 5, 2026 β€” CISS jumps 3.9% to $0.86
Oct 2, 2026 β€” CISS slides 4.2% to $0.83, a 52-week low, 6 down days in a row

CISS latest news & SEC filings

Every SEC filing by or about CISS in the last 120 days, explained in plain English. Updated daily, with a same-day refresh for new filings.

Oct 5, 2026 Β· Form POS AM β€” POS AM filing

POS AM filing

Source: SEC EDGAR filing 0001193125-26-414249

Oct 5, 2026 Β· Form POS AM β€” POS AM filing

POS AM filing

Source: SEC EDGAR filing 0001193125-26-414232

Oct 5, 2026 Β· Form POS AM β€” POS AM filing

POS AM filing

Source: SEC EDGAR filing 0001193125-26-414205

Oct 5, 2026 Β· Form SCHEDULE 13G/A β€” Update to a passive 5%+ stake (13G)

Update to a passive 5%+ stake (13G)

Filed by an outside investor (not the company). It reports a holding of more than 5% of a share class; percentage and holder name are in the filing.

Source: SEC EDGAR filing 0001094891-26-000295

Oct 5, 2026 Β· Form SCHEDULE 13G/A β€” Update to a passive 5%+ stake (13G)

Update to a passive 5%+ stake (13G)

Filed by an outside investor (not the company). It reports a holding of more than 5% of a share class; percentage and holder name are in the filing.

Source: SEC EDGAR filing 0001753926-26-001894

Oct 2, 2026 Β· Form SCHEDULE 13G/A β€” Update to a passive 5%+ stake (13G)

Update to a passive 5%+ stake (13G)

Filed by an outside investor (not the company). It reports a holding of more than 5% of a share class; percentage and holder name are in the filing.

Source: SEC EDGAR filing 0001166573-26-000003

Sep 29, 2026 Β· Form 6-K β€” Report from a foreign company (6-K)

Report from a foreign company (6-K) β€” news it published at home

Source: SEC EDGAR filing 0001193125-26-405908

Sep 3, 2026 Β· Form SCHEDULE 13G β€” Passive stake (13G)

Passive stake (13G) β€” an investor reported owning more than 5%

Filed by an outside investor (not the company). It reports a holding of more than 5% of a share class; percentage and holder name are in the filing.

Source: SEC EDGAR filing 0001235976-26-000001

Aug 28, 2026 Β· Form SCHEDULE 13D/A β€” Update to a 13D 5%+ stake disclosure

Update to a 13D 5%+ stake disclosure

Filed by an outside investor (not the company). It reports a holding of more than 5% of a share class; percentage and holder name are in the filing.

Source: SEC EDGAR filing 0001193125-26-374929

Aug 27, 2026 Β· Form 424B3 β€” Prospectus / supplement for an offering or resale

Prospectus / supplement for an offering or resale

An offering document: new shares or debt may be sold, which can increase the share count (dilution) or debt load. Size and terms are in the prospectus.

Source: SEC EDGAR filing 0001193125-26-369646

Aug 27, 2026 Β· Form 424B3 β€” Prospectus / supplement for an offering or resale

Prospectus / supplement for an offering or resale

An offering document: new shares or debt may be sold, which can increase the share count (dilution) or debt load. Size and terms are in the prospectus.

Source: SEC EDGAR filing 0001193125-26-369643

Aug 27, 2026 Β· Form 424B3 β€” Prospectus / supplement for an offering or resale

Prospectus / supplement for an offering or resale

An offering document: new shares or debt may be sold, which can increase the share count (dilution) or debt load. Size and terms are in the prospectus.

Source: SEC EDGAR filing 0001193125-26-369642

Aug 27, 2026 Β· Form 424B3 β€” Prospectus / supplement for an offering or resale

Prospectus / supplement for an offering or resale

An offering document: new shares or debt may be sold, which can increase the share count (dilution) or debt load. Size and terms are in the prospectus.

Source: SEC EDGAR filing 0001193125-26-369641

Aug 27, 2026 Β· Form 424B3 β€” Prospectus / supplement for an offering or resale

Prospectus / supplement for an offering or resale

An offering document: new shares or debt may be sold, which can increase the share count (dilution) or debt load. Size and terms are in the prospectus.

Source: SEC EDGAR filing 0001193125-26-369639

Aug 27, 2026 Β· Form 6-K β€” Report from a foreign company (6-K)

Report from a foreign company (6-K) β€” news it published at home

Source: SEC EDGAR filing 0001193125-26-369519

Things to know before you trade CISS

CISS market data (last 20 sessions)

DateOpenHighLowCloseVolume
Oct 16, 20260.560.580.510.53684.01K
Oct 15, 20260.550.580.540.56448.80K
Oct 14, 20260.600.610.520.53897.90K
Oct 13, 20260.670.740.580.631.64M
Oct 12, 20260.770.770.640.686.05M
Oct 9, 20260.830.830.770.78153.00K
Oct 8, 20260.780.830.780.82177.90K
Oct 7, 20260.840.860.800.80283.50K
Oct 6, 20260.860.900.850.89386.10K
Oct 5, 20260.870.900.790.86446.20K
Oct 2, 20260.900.970.820.83425.70K
Oct 1, 20260.880.900.850.87211.60K
Sep 30, 20260.950.980.880.88223.40K
Sep 29, 20261.031.040.890.95338.30K
Sep 28, 20261.081.081.021.04291.60K
Sep 25, 20261.111.131.061.11262.90K
Sep 24, 20261.111.141.071.12219.20K
Sep 23, 20261.111.161.051.10506.60K
Sep 22, 20261.311.311.001.142.13M
Sep 21, 20261.561.671.221.2315.27M

About C3is

C3is (CISS) is listed on the Nasdaq and classified by the SEC under β€œDeep Sea Foreign Transportation of Freight”. Its business address is in ATHENS, Greece. State of incorporation: Marshall Islands. Fiscal year ends December 31. SEC CIK 1951067.

CISS board of directors & executives

From SEC Form 3/4/5 insider filings made in the last 12 months (date = latest filing).

Directors

NameRoleLatest filing
Adamantios AndriotisCEO and PresidentMar 18, 2026
Ioannis KostogiannisDirectorMar 18, 2026
Harry VafiasDirectorMar 18, 2026
Georgios XiradakisDirectorMar 18, 2026

Executive officers

NameTitleLatest filing
Adamantios AndriotisCEO and PresidentMar 18, 2026
Nina Sarojini PyndiahChief Financial OfficerMar 18, 2026

Recent insider buys & sales

DateInsiderTypeSharesPrice
No open-market insider buys or sales reported in the last 12 months.

CISS financials (annual, from XBRL filings)

Fiscal year endRevenueNet incomeDiluted EPSOperating cash flow
No annual XBRL figures available (foreign filers often report on Form 20-F).

Latest balance sheet: total assets $β€”, total liabilities $β€”, cash $β€”.

CISS earnings / results-day log

DateFilingClose that day
No 8-K earnings releases in recent filings.

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Information only, not investment advice. BuyMeWhiskey is not a registered investment adviser or broker-dealer; nothing here is a recommendation to buy, sell or hold any security, and there are no price targets. Data comes from SEC EDGAR filings and public end-of-day market data and may be delayed or contain errors. Verify with the company's filings before making decisions. Prices: end-of-day data as of Oct 16, 2026, 4:00 PM ET. Filings: SEC EDGAR. Updated after every US trading day.