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RUBI 424B3: Material agreement

Filed with the SEC on · accession 0001171843-26-006671

RUBI filed a 424B3 (prospectus (offering)) with the SEC on Oct 15, 2026. The final terms of an offering of shares or bonds. The stock moved +1.5% by the first close after the filing.

Summary of the filing

Rubico Inc. amended a related-party agreement with TOP Ships Inc. to extend the due date for a $3.7 million outstanding balance related to its acquisition of Roman Shark V Inc. from September 30, 2026 to October 31, 2026, with the option to settle in cash or Series G Convertible Preferred Shares.

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Key details

Aggregate purchase price for Roman Shark V$6.5M
Cash settled portion of purchase price$2.8M
Outstanding balance due to TOP Ships$3.7M
RegistrantRubico Inc.
Related party, counterparty to amendmentTOP Ships Inc.
Acquired subsidiaryRoman Shark V Inc.
ShipbuilderGuangzhou Shipyard International Company Limited
ShipbuilderChina Shipbuilding Trading Co., Ltd.
Chief financial officerNikolaos Papastratis

How RUBI stock reacted

Close before

$7.90

Oct 14, 2026

First close after

+1.52%

$8.03

5 trading days

-43.39%

$4.47

Since filing

-87.79%

$0.97

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Frequently asked questions

What did RUBI file with the SEC on Oct 15, 2026?

RUBI filed a 424B3 (Material agreement). Rubico Inc. amended a related-party agreement with TOP Ships Inc. to extend the due date for a $3.7 million outstanding balance related to its acquisition of Roman Shark V Inc. from September 30, 2026 to October 31, 2026, with the option to settle in cash or Series G Convertible Preferred Shares.

What does a material agreement mean for RUBI stock?

A contract important enough that investors need to know about it — a big customer contract, a loan, a merger agreement or a partnership.

How do I read a 424B3?

The final terms of an offering of shares or bonds. Look at price, number of shares and the discount to the market price. Large offerings dilute existing shareholders.

Why are SEC filings important?

Public companies must tell the SEC about anything that can change their value — results, leadership changes, big deals, new shares, bankruptcy. Filings are the official source, often before the news. A 424B3 (prospectus (offering)): The final terms of an offering of shares or bonds.

How did RUBI stock react to this filing?

RUBI closed at $7.90 before the filing and $8.03 on Oct 15, 2026 (+1.52%). Five trading days later: $4.47 (-43.39%).

Other RUBI SEC filings

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