Company: CTRM
Filing Date: 2025-10-01
Form Type: 6-K
Source: 0001140361-25-036884
Chunk: 2

Company: Castor Maritime Inc.
Filing Date: 2025-10-01
Form: 6-K
Chunk 2
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 Perpetual Convertible Preferred Shares |
| 99.3        | Share Purchase Agreement, dated as of September 29, 2025, between Castor Maritime Inc. and Toro Corp.                                      |

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.

| Dated: October 1, 2025 | CASTOR MARITIME INC. |                                             |
|:-----------------------|:---------------------|:--------------------------------------------|
|                        | By:                  | /s/ Petros Panagiotidis                     |
|                        |                      | Petros Panagiotidis                         |
|                        |                      | Chairman, Chief Executive Officer and Chief 
 Financial Officer                           |