EUROSEAS LTD. (FILING AMENDMENT)

This Form 6-K / A amends a previous filing from October 30, 2025.

• Purpose: The amendment was filed solely due to an administrative error.
• Financial Impact: No new or different financial information is introduced. The underlying material remains the unaudited interim condensed consolidated financial statements and MD&A for the six-month period ended June 30, 2025.

The registrant confirms the original report contained no substantive changes to the previously filed materials.

• Filer: Foreign Private Issuer filing under