# EDGAR Filing Document

**Accession Number:** 0001943421
**File Stem:** 0001171843-26-002343
**Filing Date:** 2026-4
**Character Count:** 21408
**Document Hash:** 9e001f7fe9ef4d4da1b628b9782e200b
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001171843-26-002343.hdr.sgml**: 20260409

**ACCESSION NUMBER**: 0001171843-26-002343

**CONFORMED SUBMISSION TYPE**: F-1MEF

**PUBLIC DOCUMENT COUNT**: 16

**FILED AS OF DATE**: 20260409

**DATE AS OF CHANGE**: 20260409

**EFFECTIVENESS DATE**: 20260409

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Rubico Inc.
- **CENTRAL INDEX KEY:** 0001943421
- **STANDARD INDUSTRIAL CLASSIFICATION:** WATER TRANSPORTATION [4400]
- **ORGANIZATION NAME:** 01 Energy & Transportation
- **EIN:** 000000000
- **STATE OF INCORPORATION:** 1T
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** F-1MEF
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 333-294944
- **FILM NUMBER:** 26849941

**BUSINESS ADDRESS:**
- **ADDRESS IS A NON US LOCATION:** YES
- **STREET 1:** VAS SOFIAS 1 & MEG. ALEXANDROU
- **CITY:** ATHENS
- **PROVINCE COUNTRY:** J3
- **BUSINESS PHONE:** 30 2108128180

**MAIL ADDRESS:**
- **ADDRESS IS A NON US LOCATION:** YES
- **STREET 1:** VAS SOFIAS 1 & MEG. ALEXANDROU
- **CITY:** ATHENS
- **PROVINCE COUNTRY:** J3

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** Central Tactical Acquisitions Inc.
- **DATE OF NAME CHANGE:** 20220818

**As filed with the U.S. Securities and Exchange Commission on April 9, 2026.**

**Registration No. 333-**

**UNITED STATES**

**SECURITIES AND EXCHANGE COMMISSION** 

**Washington, D.C. 20549**

**Form F-1**

**REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933** 

**Rubico Inc.**

(Exact name of Registrant as specified in its charter)

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| | | |
|:---|:---|:---|
| **Republic of the Marshall Islands**<br> (State or other jurisdiction of<br> incorporation or organization) | **4412**<br> (Primary Standard Industrial<br> Classification Code Number) | **N/A**<br> (I.R.S. Employer Identification No.) |

---

**20 Iouliou Kaisara Str**

**19002 Paiania** 

**Athens, Greece**

**+30 210 812 8107**

(Address, including zip code, and telephone number, including area code, of Registrant's principal executive offices)

**Watson Farley & Williams LLP** 

**Attention: Will Vogel, Esq.** 

**120 West 45<sup>th</sup> Street, 20<sup>th</sup> Floor** 

**New York, New York 10036** 

**(212) 922-2200**

(Name, address, including zip code, and telephone number, including area code, of agent for service)

***Copies to:***

**Will Vogel, Esq.** 

**Watson Farley & Williams LLP** 

**120 West 45<sup>th</sup> Street, 20<sup>th</sup> Floor** 

**New York, New York 10036** 

**+1 (212) 922-2200 (telephone number)**

**Approximate date of commencement of proposed sale to the public:**

**As soon as practicable after this Registration Statement becomes effective.**

If any of the securities being registered on this Form are being offered on a delayed or continuous basis pursuant to Rule 415 under the Securities Act, check the following box. ☒

If this Form is filed to register additional securities for an offering pursuant to Rule 462(b) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering. ☒ 333-288796

If this Form is a post-effective amendment filed pursuant to Rule 462(c) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering. ☐

If this Form is a post-effective amendment filed pursuant to Rule 462(d) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering. ☐

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933.

Emerging growth company ☒

If an emerging growth company that prepares its financial statements in accordance with U.S. GAAP, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards† provided pursuant to Section 7(a)(2)(B) of the Securities Act. ☒

† The term "new or revised financial accounting standard" refers to any update issued by the Financial Accounting Standards Board to its Accounting Standards Codification after April 5, 2012.

**This registration statement shall become effective upon filing with the Securities and Exchange Commission in accordance with Rule 462(b) under the Securities Act of 1933, as amended.**

**EXPLANATORY NOTE**

This registration statement is being filed pursuant to Rule 462(b) and General Instruction V to Form F-1 promulgated under the Securities Act of 1933, as amended, and includes the registration statement facing page, this page, the signature page, an exhibit index, an opinion of Watson Farley & Williams LLP regarding the validity of the securities being registered and a related consent of Deloitte Certified Public Accountants S.A. This registration statement relates to (i) Rubico Inc.'s registration statement on Form F-1 (File No. 333-288796), as amended and supplemented, including the exhibits and powers of attorney thereto (the "Initial Registration Statement"), declared effective by the Securities and Exchange Commission on September 19, 2025, (ii) the registration statements on Form F-1MEF (Registration No. 333-291884 and Registration No. 333-293441) that Rubico Inc. filed with the Securities and Exchange Commission on December 2, 2025 and February 13, 2026, respectively (together with the Initial Registration Statement and the Post-Effective Amendment (as defined below), the "Registration Statements"), and which became effective upon filing in accordance with Rule 462(b) under the Securities Act of 1933, as amended, and (iii) the Post-Effective Amendment declared effective by the SEC on April 6, 2026 (the "Post-Effective Amendment"). Pursuant to General Instruction V to Form F-1, the contents of the Registration Statements are incorporated by reference into this registration statement.

The registrant is filing this registration statement for the sole purpose of increasing the proposed maximum number of shares of common stock (including the related preferred stock purchase rights) offered hereby by 13,950,000, following a reverse stock split of the registrant's shares of common stock effective on April 9, 2026. The additional securities that are being registered for sale are in an amount and at a price that, together with the securities offered under the Registration Statements, do not represent a change to the maximum aggregate offering price set forth in the Calculation of Filing Fee Table contained in the Initial Registration Statement, and therefore no additional filing fee is payable.

**PART II: INFORMATION NOT REQUIRED IN THE PROSPECTUS**

**Item 8.** **Exhibits and Financial Statement Schedules.** 

**(a)** The following exhibits are included in this registration statement on Form F-1:

**Exhibit Index**

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| | |
|:---|:---|
| **Exhibit** <br> **No.**  | **Description** |
| [5.1](exh_51.htm) | [Opinion of Watson Farley & Williams LLP, as to the legality of the securities being registered](exh_51.htm) |
| [23.1](exh_231.htm) | [Consent of Independent Registered Public Accounting Firm](exh_231.htm) |
| [23.2](exh_51.htm) | [Consent of Watson Farley & Williams LLP (included in Exhibit 5.1 hereto)](exh_51.htm) |
| [24.1](#poa) | [Powers of Attorney (included on the signature page hereto)](#poa) |
| [107](exh_107.htm) | [Filing Fee Table](exh_107.htm) |

---

**SIGNATURES** 

Pursuant to the requirements of the Securities Act of 1933, the registrant certifies that it has reasonable grounds to believe that it meets all of the requirements for filing on Form F-1 and has duly caused this registration statement to be signed on its behalf by the undersigned, thereunto duly authorized, in Athens, Greece on the 9th day of April, 2026.

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| | | |
|:---|:---|:---|
| **RUBICO INC.** | **RUBICO INC.** | **RUBICO INC.** |
| By: | /s/ Nikolaos Papastratis | /s/ Nikolaos Papastratis |
|  | Name: | Nikolaos Papastratis |
|  | Title: | Chief Financial Officer |

---

**POWER OF ATTORNEY**

KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears below constitutes and appoints Kalliopi Ornithopoulou and Will Vogel, with full power to act alone, his or her true lawful attorney-in-fact and agent, with full powers of substitution and resubstitution, for him or her and in his or her name, place and stead, in any and all capacities, to sign any or all amendments or supplements to this registration statement, whether pre-effective or post-effective, including any subsequent registration statement for the same offering which may be filed under Rule 462(b) under the Securities Act of 1933, as amended, and to file the same, with all exhibits thereto, and other documents in connection therewith, with the Securities and Exchange Commission, granting unto said attorney-in-fact and agent full power and authority to do and perform each and every act and thing necessary to be done, as fully for all intents and purposes as he or she might or could do in person hereby ratifying and confirming all that said attorney-in-fact and agent, or his or her substitute, may lawfully do or cause to be done by virtue hereof.

Pursuant to the requirements of the Securities Act of 1933, as amended, this registration statement has been signed by the following persons in the capacities indicated on April 9, 2026.

---

| | |
|:---|:---|
| /s/ Kalliopi Ornithopoulou | Chief Executive Officer<br> (Principal Executive Officer), President and Chairwoman of the Board |
| Kalliopi Ornithopoulou | Chief Executive Officer<br> (Principal Executive Officer), President and Chairwoman of the Board |
| /s/ Nikolaos Papastratis | Chief Financial Officer<br> (Principal Financial Officer and Principal Accounting Officer) and Director |
| Nikolaos Papastratis | Chief Financial Officer<br> (Principal Financial Officer and Principal Accounting Officer) and Director |
| /s/ Aristovoulos Christinis | Director |
| Aristovoulos Christinis | |
| /s/ George Xiradakis | Director |
| George Xiradakis |  |
| /s/ George M. Daskalakis | Director |
| George M. Daskalakis |  |

---

**AUTHORIZED REPRESENTATIVE** 

Pursuant to the requirements of the Securities Act of 1933, as amended, the undersigned, the duly authorized representative of the Registrant in the United States, has signed this registration statement in the City of Newark, State of Delaware, on April 9, 2026.

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| | | |
|:---|:---|:---|
| PUGLISI & ASSOCIATES | PUGLISI & ASSOCIATES | PUGLISI & ASSOCIATES |
| By: | /s/ Donald J. Puglisi | /s/ Donald J. Puglisi |
|  | Name: | Donald J. Puglisi |
|  | Title: | Authorized Representative in the United States |

---

## Exhibit 5.1

**Exhibit 5.1**

Rubico Inc.

20 Iouliou Kaisara Str,<br> 19002 Paiania, Athens, Greece

April 9, 2026

**Re: Rubico Inc: Exhibit 5.1 Opinion.**

Ladies and Gentlemen:

We have acted as counsel to Rubico Inc., a corporation organized under the laws of the Republic of the Marshall Islands (the "Company"), in connection with the Company's Registration Statement on Form F-1, as publicly filed by the Company with the U.S. Securities and Exchange Commission (the "Commission") pursuant to Rule 462(b) promulgated under the U.S. Securities Act of 1933, as amended (the "Securities Act") on the date hereof (the "Rule 462(b) Registration Statement"), with respect to the Company's registration of the distribution of up to 15,000,000 of its common shares, par value $0.01 per share (the "Common Shares"), which Common Shares include preferred stock purchase rights (the "Preferred Stock Purchase Rights" and, collectively with the Common Shares, the "Securities"). The Rule 462(b) Registration Statement relates to the sale by B. Riley Principal Capital II, LLC ("BRPC II") of Common Shares it will acquire from the Company from time-to-time pursuant to a common shares purchase agreement (the "Purchase Agreement"), dated July 18, 2025, between BRPC II and the Company.

The Rule 462(b) Registration Statement incorporates by reference the contents of the Registration Statement on Form F-1 (File No. 333-288796, as amended, the "Registration Statement"), including the prospectus contained therein (as amended or supplemented, the "Prospectus"), which was declared effective by the Commission on September 19, 2025.

As such counsel, we have examined originals or copies (certified or otherwise identified to our satisfaction) of the following documents:

(i) the Rule 462(b) Registration Statement, the Registration Statement and the Prospectus;

(ii) the Shareholders' Rights Agreement (the "Rights Agreement") between the Company and Broadridge Corporate Issuer
Solutions, LLC, as rights agent relating to the Preferred Stock Purchase Rights;

(iii) the Company's amended and restated articles of incorporation and the amended and restated bylaws;

(iv) the Purchase Agreement; and

(v) such other papers, documents, agreements, certificates of public officials and certificates of representatives of the Company, as we have deemed relevant and necessary as the basis for the opinions hereafter expressed.

![](wfwfoot.jpg)

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| | |
|:---|:---|
| ![](wfw2.jpg) | Page 2 |

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In such examination, we have assumed (a) the legal competence or capacity of persons or entities (other than the Company) to complete the execution of documents, (b) the genuineness of all signatures and the authenticity of all documents submitted to us as originals, (c) the conformity to original documents of all documents submitted to us as conformed or photostatic copies, (d) that the documents reviewed by us in connection with the rendering of the opinions set forth herein are true, correct and complete, and (e) the truthfulness of each statement as to all factual matters contained in any document or certificate encompassed within the due diligence review undertaken by us. As to matters of fact material to this opinion that have not been independently established, we have relied upon the representations and certificates of officers or representatives of the Company and of public officials, in each case as we have deemed relevant and appropriate. We have not independently verified the facts so relied on.

We have further assumed for the purposes of this opinion, without investigation, that all documents contemplated by the Prospectus to be executed in connection with the distribution of the Securities have been duly authorized, executed and delivered by each of the parties thereto other than the Company, and the terms of the distribution comply in all respects with the terms, conditions and restrictions set forth in the Prospectus and all of the instruments, agreements and other documents relating thereto or executed in connection therewith.

This opinion letter is limited to Marshall Islands and New York law and is as of the date hereof. We expressly disclaim any responsibility to advise of any development or circumstance of any kind, including any change of law or fact that may occur after the date of this opinion letter that might affect the opinion expressed herein.

Based on the foregoing and having regard to legal considerations which we deem relevant, we are of the opinion that:

1. the Securities have been duly authorized, and the Common Shares, when issued, sold and paid for as contemplated in the Prospectus or any supplement thereto and the Purchase Agreement, will be validly issued, fully paid and non-assessable; and

2. when the Common Shares are issued, sold and paid for as contemplated in the Prospectus or any supplement thereto and the Purchase Agreement, the related Preferred Share Purchase Rights will constitute binding obligations of the Company in accordance with the terms of the Rights Agreement.

We consent to the filing of this opinion as an exhibit to the Rule 462(b) Registration Statement, the discussion of this opinion in the Rule 462(b) Registration Statement, and the references to our firm in the Prospectus. In giving this consent, we do not hereby admit that we are in the category of persons whose consent is required under Section 7 of the Securities Act, nor do we admit that we are experts with respect to any part of the Rule 462(b) Registration Statement within the meaning of the term "expert" as used in the Securities Act.

Very truly yours,

*/s/ Watson Farley & Williams LLP*

**Watson Farley & Williams LLP**

## Exhibit 23.1

**Exhibit 23.1**

**Consent of Independent Registered Public Accounting Firm**

We consent to the incorporation by reference in this Registration Statement on Form F-1 MEF of our report dated March 20, 2026, relating to the financial statements of Rubico Inc. appearing in Registration Statement Nos. 333-288796, 333-291884 and 333-293441 on Form F-1 of Rubico Inc. We also consent to the reference to us under the heading "Experts" in such Registration Statement.

/s/ Deloitte Certified Public Accountants S.A.

Athens, Greece

April 9, 2026

## Ex-Filing

?xml version='1.0' encoding='ASCII'? EX-FILING FEES

**Exhibit 107**

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|:---|
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; **Calculation of Filing Fee Tables**  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; **F-1**  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; **Rubico Inc.**  |

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| | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|
| | | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; **Security Type**  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; **Security Class Title**  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; **Fee Calculation or Carry Forward Rule**  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; **Maximum Aggregate Offering Price**  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; **Fee Rate**  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; **Amount of Registration Fee**  |
| **Newly Registered Securities** | **Newly Registered Securities** | **Newly Registered Securities** | **Newly Registered Securities** | **Newly Registered Securities** | **Newly Registered Securities** | **Newly Registered Securities** | **Newly Registered Securities** |
| Fees to be Paid | 1 | Equity | Shares of common stock, par value US$0.01 per share | 457(o) | $0.00 | 0.0001381 | $0.00 |
| Fees Previously Paid |  |  |  |  |  |  |  |
| **Carry Forward Securities** | **Carry Forward Securities** | **Carry Forward Securities** | **Carry Forward Securities** | **Carry Forward Securities** | **Carry Forward Securities** | **Carry Forward Securities** | **Carry Forward Securities** |
| Carry Forward Securities |  |  |  |  |  |  |  |
|  |  |  | Total Offering Amounts: | Total Offering Amounts: | $0.00  |  | $0.00  |
|  |  |  | Total Fees Previously Paid:  | Total Fees Previously Paid:  |  |  | $0.00  |
|  |  |  | Total Fee Offsets:  | Total Fee Offsets:  |  |  | $0.00  |
|  |  |  | Net Fee Due:  | Net Fee Due:  |  |  | $0.00  |

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; **Offering Note** <br>

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <sup>1</sup> Including related preferred stock purchase rights. Preferred stock purchase rights are not currently separable from the shares of common stock and are not currently exercisable. The value attributable to the preferred stock purchase rights, if any, will be reflected in the market price of the shares of common stock.

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| |
|:---|
| |
| **Rules 457(b) and 0-11(a)(2)** |
| Fee Offset Claims |
| Fee Offset Sources |
| **Rule 457(p)** |
| Fee Offset Claims |
| Fee Offset Sources |

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