Company: CMDB
Filing Date: 2025-05-30
Form Type: F-3
Source: 0001140361-25-020943
Chunk: 1

Company: Costamare Bulkers Holdings Ltd
Filing Date: 2025-05-30
Form: F-3
Chunk 1
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 filed to register additional securities or additional classes of securities pursuant to Rule 413(b) under the Securities Act, check the following box.☐ 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 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 updated issued by the Financial Accounting Standards Board to its Accounting Standards Codification after April 5, 2012. The Company hereby amends this Registration Statement on such date or dates as may be necessary to delay its effective date until the Company shall file a further amendment which specifically states that this Registration Statement shall thereafter become effective in accordance with Section 8(a) of the Securities Act or until the Registration Statement shall become effective on such date as the Commission, acting pursuant to said Section 8(a), may determine.

#### TABLE OF CONTENTS
**The information in this prospectus is not complete and may be changed. We may not sell these securities until the registration statement filed with the Securities and Exchange Commission is effective. This prospectus is not an offer to sell these securities and it is not soliciting an offer to buy these securities in any jurisdiction where the offer or sale is not permitted.**

#### SUBJECT TO COMPLETION, DATED MAY 30, 2025.

### PROSPECTUS
<div align='center'>**$200,000,000**</div>

#### Common Stock

#### Preferred Stock

#### Debt Securities

#### Warrants

#### Rights

#### Units
**Through this prospectus, we may offer common stock, including preferred stock purchase rights, preferred stock, which may be represented by American Depositary Shares (“ADSs”), debt securities, warrants, rights and units from time to time. We may also offer securities of the types listed above that are convertible or exchangeable into one or more of the securities listed above. When we decide to sell a particular class or series of securities, we will provide specific terms of the offered securities in a prospectus supplement or a free writing prospectus.

The securities covered by this prospectus may be offered and sold from time to time in one or more offerings