# EDGAR Filing Document

**Accession Number:** 0001941131
**File Stem:** 0001140361-25-046688
**Filing Date:** 2025-12
**Character Count:** 3874
**Document Hash:** bf61d6dcb5deea85685e7623dc735111
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001140361-25-046688.hdr.sgml**: 20251229

**ACCESSION NUMBER**: 0001140361-25-046688

**CONFORMED SUBMISSION TYPE**: 6-K

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20251229

**FILED AS OF DATE**: 20251229

**DATE AS OF CHANGE**: 20251229

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** TORO CORP.
- **CENTRAL INDEX KEY:** 0001941131
- **STANDARD INDUSTRIAL CLASSIFICATION:** DEEP SEA FOREIGN TRANSPORTATION OF FREIGHT [4412]
- **ORGANIZATION NAME:** 01 Energy & Transportation
- **EIN:** 000000000
- **STATE OF INCORPORATION:** 1T
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 6-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-41561
- **FILM NUMBER:** 251602725

**BUSINESS ADDRESS:**
- **ADDRESS IS A NON US LOCATION:** YES
- **STREET 1:** 223 CHRISTODOULOU CHATZIPAVLOU STREET
- **STREET 2:** HAWAII ROYAL GARDENS
- **CITY:** LIMASSOL
- **PROVINCE COUNTRY:** 1T
- **BUSINESS PHONE:** 0035725357768

**MAIL ADDRESS:**
- **ADDRESS IS A NON US LOCATION:** YES
- **STREET 1:** 223 CHRISTODOULOU CHATZIPAVLOU STREET
- **STREET 2:** HAWAII ROYAL GARDENS
- **CITY:** LIMASSOL
- **PROVINCE COUNTRY:** 1T

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** TANKCO SHIPPING INC.
- **DATE OF NAME CHANGE:** 20220803

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### 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 OF

#### THE SECURITIES EXCHANGE ACT OF 1934

#### For the month of December 2025

#### Commission File Number: 001-41561

## TORO CORP.

#### (Translation of registrant's name into English)

#### 223 Christodoulou Chatzipavlou Street, Hawaii Royal Gardens, 3036 Limassol, Cyprus

#### (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 ☒ Form 40-F ☐

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#### INFORMATION CONTAINED IN THIS FORM 6-K REPORT

On December 23, 2025, Toro Corp. (the "Company" or "Toro") and Castor Maritime Inc. ("Castor") agreed to amend the terms of (1) Castor's 5.00% Series D Cumulative Perpetual Convertible Preferred Shares, par value $0.001 per share (the "Castor Series D Preferred Shares"), held by a wholly-owned subsidiary of Toro and (2) Toro's 1.00% Series A Fixed Rate Cumulative Perpetual Convertible Preferred Shares (the "Toro Series A Preferred Shares"), held by a wholly-owned subsidiary of Castor, in each case to extend the initial conversion date by one-year, which shall be to January 1, 2027 in the case of the Castor Series D Preferred Shares and March 7, 2027 in the case of the Toro Series A Preferred Shares.

Castor is a public company listed on the Nasdaq Capital Market. Castor's Chairman, Chief Executive Officer and Chief Financial Officer, is also the Company's Chairman and Chief Executive Officer. The foregoing amendments to the terms of the preferred shares were approved by the board of directors of Toro and Castor at the recommendation of their respective special committees of disinterested and independent directors who negotiated the amendments.

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The information contained in this report on Form 6-K is hereby incorporated by reference into the Company's registration statements on Form F-3 (File Nos. 333-275477 and 333-275478) and Form S-8 (File No. 333-274652 and 333-290645).

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#### SIGNATURES

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.

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| | | |
|:---|:---|:---|
|  | **TORO CORP.** | **TORO CORP.** |
| Dated: December 29, 2025 |  |  |
|  | By: <br>| /s/ Petros Panagiotidis |
|  |  | Petros Panagiotidis |
|  |  | Chairman and Chief Executive Officer |

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