Company: CMRE-PC
Filing Date: 2025-08-08
Form Type: 6-K
Source: 0001140361-25-029728
Chunk: 0

Company: Costamare Inc.
Filing Date: 2025-08-08
Form: 6-K
Chunk 0
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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 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of August 2025 Commission File Number: 001-34934 COSTAMARE INC. (Translation of registrant’s name into English) 7 rue du Gabian, MC 98000 Monaco (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 ☐ EXHIBIT INDEX

| 99.1 | Proxy Statement for the 2025 Annual Meeting of Stockholders |
| 99.2 | Proxy for the 2025 Annual Meeting of Stockholders           |
| 99.3 | 2024 Annual Report                                          |

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. Date: August 8, 2025

| COSTAMARE INC. |                         |
| By:            | /s/ Gregory G. Zikos    |
| Name:          | Gregory G. Zikos        |
| Title:         | Chief Financial Officer |