Rubico sets 1-for-25 reverse split for October 30

Cash payments for fractional-share entitlements will use the fraction otherwise due multiplied by RUBI’s October 29, 2026 Nasdaq closing price.

Rhea-AI Filing Summary

Rubico Inc. (RUBI) announced a 1-for-25 reverse stock split of its issued common shares, effective at the opening of trading on October 30, 2026. The shares are scheduled to begin trading on a split-adjusted basis that morning under the existing symbol RUBI. As of October 28, 2026, Rubico had 13,517,355 outstanding common shares; the company said this count will be reduced to approximately 540,694, subject to cancellation of fractional shares. The split will not change the authorized share count, par value per share, voting rights or other terms of the common shares. Rubico said the split’s purpose is to increase the common share market price and that it believes the split will allow it to maintain compliance with Nasdaq’s continued listing requirements.

Filing Explained

The amendment is filed, but the share conversion is still pending; fractional interests will be paid in cash using the October 29 closing price.

The company filed the articles of amendment with the Marshall Islands registrar on October 28, but the share conversion remains scheduled for October 30 and has not yet taken effect.

Holders who would otherwise receive fractional shares will instead receive cash equal to the fractional amount multiplied by the October 29 Nasdaq closing price.

Key Figures

Reverse stock split ratio: 1-for-25 Outstanding common shares: 13,517,355 shares Common shares after reverse split: Approximately 540,694 shares

3 metrics

Reverse stock split ratio 1-for-25 Effective October 30, 2026

Outstanding common shares 13,517,355 shares As of October 28, 2026

Common shares after reverse split Approximately 540,694 shares Company estimate, subject to cancellation of fractional shares

Key Terms

Reverse Stock Split, split-adjusted basis, fractional shares, continued listing requirements

4 terms

Reverse Stock Split financial

"effect a 1 for 25 reverse stock split"

A reverse stock split reduces a company's number of outstanding shares while raising the price per share proportionally, so the total value of each investor's holding is unchanged; a 1-for-10 split turns 100 shares worth $1 each into 10 shares worth $10 each. Companies often do this to regain compliance with an exchange's minimum price rule or to attract investors who avoid very low-priced stocks.

split-adjusted basis technical

"begin trading on a split-adjusted basis"

An adjustment to historical share prices and share counts that reflects past stock splits or reverse splits so that old data lines up with the current number of shares. Think of it like resizing an old photograph so it matches a new frame: it keeps price charts, returns and per‑share metrics comparable over time, which matters to investors who need accurate performance, valuation and trend analysis.

fractional shares financial

"No fractional shares will be created or issued"

Fractional shares are portions of a whole share of a stock or fund, allowing investors to own less than one full unit. They make it possible to invest a specific dollar amount rather than buy whole shares, like buying a slice of a pizza instead of the entire pie. For investors this lowers the cost barrier, helps with diversification, and lets you reinvest dividends or purchase expensive stocks in small, precise amounts.

continued listing requirements regulatory

"Nasdaq's continued listing requirements"

Rules a stock exchange sets that a publicly traded company must keep meeting to stay listed and tradable on that exchange, such as minimum share price, market value, timely financial reports, and basic governance practices. Like a club’s membership rules, they matter because falling short can lead to warnings, penalties or removal from the exchange, which can cut liquidity, hurt share value and increase the risk for investors.

Stock Split

1-for-25 reverse split · Effective October 30, 2026

Split Ratio 1-for-25 reverse split

Effective Date October 30, 2026

Shares Before Split 13,517,355

Shares After Split 540,694

Share Count As Of October 28, 2026

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

Do RUBI shareholders need to take action for the reverse stock split?

Shareholders whose shares are held in book-entry form or through a bank, broker, or other nominee are not required to take action. The split’s impact is to be reflected in their accounts on or after October 30, 2026.

How will RUBI handle fractional shares in the reverse split?

No fractional shares will be created or issued. A shareholder otherwise entitled to a fractional share will receive a cash payment equal to that fraction multiplied by the common shares’ October 29, 2026 closing price on Nasdaq.

AI-generated analysis. How Rhea-AI works. Not financial advice.

Form 6-K: How Foreign Companies Report to the SEC →

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Available on EDGAR 10/28/2026 - 04:15 PM EDT Accepted by SEC EDGAR 10/28/2026 - 04:15 PM EDT Learn about SEC filing dates

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

Form 6-K

REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16

UNDER THE SECURITIES EXCHANGE ACT OF 1934

For the month of October 2026

Commission File Number: 001-42684

Rubico Inc.
(Translation of registrant's name into English)

20 Iouliou Kaisara Str
19002 Paiania
Athens, Greece
(Address of principal executive office)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.

Form 20-F [ X ] Form 40-F [ ]

On October 28, 2026, the Registrant issued a press release, a copy of which is attached hereto as Exhibit 99.1 and is incorporated herein by reference. Attached hereto as Exhibit 1.1 is a copy of the Articles of Amendment to the Amended and Restated Articles of Incorporation of the Registrant, filed with the Registrar of Corporations of the Republic of the Marshall Islands on October 28, 2026.

Exhibit 1.1. Articles of Amendment to Amended and Restated Articles of Incorporation

Exhibit 99.1. Press release dated October 28, 2026

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

		Rubico Inc.
		(Registrant)
Date: October 28, 2026		By: /s/ Nikolaos Papastratis
		Name: Nikolaos Papastratis
		Title: Chief Financial Officer

Exhibit 99.1

Rubico Inc. Announces Reverse Stock Split

ATHENS, Greece, Oct. 28, 2026 (GLOBE NEWSWIRE) -- Rubico Inc. (Nasdaq: RUBI) (the “Company” or “Rubico”), a global provider of shipping transportation services specializing in the ownership of vessels, announced today that its board of directors (the “Board”) has determined to effect a 1 for 25 reverse stock split (the “Reverse Stock Split”) of the Company's issued common shares, par value $0.01 (the “Common Shares”), effective at the opening of trading on October 30, 2026.

Reverse Stock Split

The Reverse Stock Split will be effective, and the Common Shares will begin trading on a split-adjusted basis on the Nasdaq Capital Market (“Nasdaq”), at the opening of trading on October 30, 2026, under the existing trading symbol “RUBI.” The new CUSIP number for the Common Shares following the Reverse Stock Split will be Y1250N 305.

When the Reverse Stock Split becomes effective, every 25 issued and outstanding Common Shares will be automatically converted into 1 issued and outstanding Common Share without any change in (i) the par value per share or (ii) the total number of Common Shares the Company is authorized to issue.

Details

The Reverse Stock Split will not (i) affect any shareholder's ownership percentage of Common Shares (except as a result of the cancellation of fractional shares), (ii) have any direct impact on the market capitalization of the Company, or (iii) modify any voting rights or other terms of the Common Shares. As of October 28, 2026, the Company had 13,517,355 outstanding Common Shares, which will be reduced to approximately 540,694 Common Shares, to be adjusted for cancellation of any fractional shares.

No fractional shares will be created or issued in connection with the Reverse Stock Split. Shareholders who otherwise would be entitled to receive fractional shares because their pre-split holdings of Common Shares are not evenly divisible by the number of pre-split shares for which each post-split share is to be exchanged will receive a cash payment in lieu thereof at a price equal to that fraction of a share to which the shareholder would otherwise be entitled, multiplied by the closing price of the Common Shares on Nasdaq on October 29, 2026.

Shareholders with shares held in book-entry form or through a bank, broker, or other nominee are not required to take any action and will see the impact of the Reverse Stock Split reflected in their accounts on or after October 30, 2026. Such beneficial holders may contact their bank, broker, or nominee for more information.

The purpose of the reverse stock split is to increase the market price of the Company's common stock. The Company believes that the Reverse Stock Split will increase the market price for its common stock and allow it to maintain compliance with Nasdaq's continued listing requirements.

About the Company

Rubico Inc. is a global provider of shipping transportation services specializing in the ownership of vessels. The Company is an international owner and operator of two modern, fuel efficient, eco 157,000 dwt Suezmax tankers. Furthermore, the Company owns three 47,499 dwt MR tanker newbuildings scheduled for delivery in the second, third and fourth quarters of 2029 and a 60-meter newbuilding megayacht scheduled for delivery in the second quarter of 2027, which the Company intends to divest.

The Company is incorporated under the laws of the Republic of the Marshall Islands and has executive offices in Athens, Greece. The Company's common shares trade on the Nasdaq Capital Market under the symbol "RUBI".

Please visit the Company's website at: https://rubicoinc.com/

For further information please contact:

Nikolaos Papastratis

Chief Financial Officer

Rubico Inc.

Tel: +30 210 812 8107

Email: npapastratis@rubicoinc.com

Forward-Looking Statements

Matters discussed in this press release may constitute forward-looking statements. The Private Securities Litigation Reform Act of 1995 provides safe harbor protections for forward-looking statements in order to encourage companies to provide prospective information about their business. Forward-looking statements include statements concerning plans, objectives, goals, strategies, future events or performance, and underlying assumptions and other statements, which are other than statements of historical facts, including statements regarding the consummation of the Reverse Stock Split of the Company's Common Shares, the construction and delivery of the Company's newbuilding vessels and the potential divestiture of the Company's newbuilding megayacht.

The Company desires to take advantage of the safe harbor provisions of the Private Securities Litigation Reform Act of 1995 and is including this cautionary statement in connection with this safe harbor legislation. The words "believe," "anticipate," "intends," "estimate," "forecast," "project," "plan," "potential," "may," "should," "expect," "pending" and similar expressions identify forward-looking statements. The forward-looking statements in this press release are based upon various assumptions, many of which are based, in turn, upon further assumptions, including without limitation, our management's examination of historical operating trends, data contained in our records and other data available from third parties. Although we believe that these assumptions were reasonable when made, because these assumptions are inherently subject to significant uncertainties and contingencies which are difficult or impossible to predict and are beyond our control, we cannot assure you that we will achieve or accomplish these expectations, beliefs or projections. Please see the Company's filings with the Securities and Exchange Commission for a more complete discussion of these and other risks and uncertainties. The information set forth herein speaks only as of the date hereof, and the Company disclaims any intention or obligation to update any forward-looking statements as a result of developments occurring after the date of this communication. 

Filing Exhibits & Attachments

2 documents

Press Releases

• EX-99.1 EXHIBIT 99.1 11.0 KB

Other Documents

• EX-1.1 EXHIBIT 1.1 11.0 KB