As of November 6, 2026, Costamare Bulkers Holdings Limited is a publicly traded company (NYSE: CMDB). The largest holder reporting an active stake on Schedule 13D is Konstantakopoulos Konstantinos, at 30.9%. No bankruptcy or receivership appears in its SEC Form 8-K filings. Passive holders reporting on Schedule 13G include Konstantakopoulos Achillefs (19.7%), Dimensional (6.1%) (Schedule 13D/A, October 20, 2025).
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Is Costamare Bulkers Holdings Limited a real, registered company?
- Costamare Bulkers Holdings Limited files with the SEC under CIK 2033535 (its SEC filings).
- Its shares are listed under the ticker CMDB on NYSE (SEC company record).
- Incorporated in 1T; business address in Monaco, O9, as its SEC filings state.
- Court and bankruptcy records: see Before you sign or pay below.
Before you sign or pay
- Court and bankruptcy: No federal court case or bankruptcy filing found under Costamare Bulkers Holdings Limited in our court records and SEC 8-K records (as of 2026-11-06).
- Ownership: 5%+ holders are reported on Schedule 13D or 13G; the latest names Achillefs Konstantakopoulos (filed 2026-07-20).
Who are Costamare Bulkers Holdings Limited's owners and officers?
Costamare Bulkers Holdings Limited: business address in Monaco, O9; industry Water Transportation (Schedule 13D, 2026-07-20).
| Report | Holder | Share |
|---|---|---|
| Schedule 13D, 2026-07-20 | Achillefs Konstantakopoulos | 20.5% |
| Schedule 13G/A, 2026-07-06 | Konstantakopoulos Achillefs | 19.7% |
| Schedule 13D/A, 2025-10-20 | Konstantakopoulos Konstantinos | 30.9% |
| Schedule 13D/A, 2025-08-28 | Konstantakopoulos Konstantinos | 29.7% |
| Schedule 13G, 2025-07-15 | Dimensional Fund Advisors LP | 6.1% |
Questions about who owns Costamare Bulkers Holdings Limited
Who owns Costamare Bulkers Holdings Limited?
On this page, 4 holders' latest ownership filings report 5% or more of Costamare Bulkers Holdings Limited: Konstantakopoulos Konstantinos (30.9%, Schedule 13D/A, filed 2025-10-20), Achillefs Konstantakopoulos (20.5%, Schedule 13D, filed 2026-07-20), Konstantakopoulos Achillefs (19.7%, Schedule 13G/A, filed 2026-07-06) and Dimensional Fund Advisors LP (6.1%, Schedule 13G, filed 2025-07-15).
Who are the largest shareholders of Costamare Bulkers Holdings Limited?
By the share each holder's latest filing reports, the largest holders of Costamare Bulkers Holdings Limited on this page are Konstantakopoulos Konstantinos (30.9%), Achillefs Konstantakopoulos (20.5%) and Konstantakopoulos Achillefs (19.7%).
When did Konstantakopoulos Konstantinos buy into Costamare Bulkers Holdings Limited?
The filings give report dates, not purchase dates. The earliest filing from Konstantakopoulos Konstantinos on this page is the Schedule 13D/A, filed 2025-08-28, reporting 29.7%; its latest, Schedule 13D/A filed 2025-10-20, reports 30.9%. That earliest filing is itself an amendment, which updates an earlier report.
Is this an audit or a full list?
Neither. The ownership list on this page covers only Schedule 13D and 13G filings, which holders make once they own 5% or more of a class of shares (an amendment can report a stake that has since fallen below 5%); 5 such filings are shown here. It is not an audit and not a full cap table: holders who never reached 5% are not listed, and a stake can change after its latest filing.
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Which insiders own Costamare Bulkers Holdings Limited shares?
Directors, officers and holders of 10% or more report their shares on Forms 3, 4 and 5. Each line is the latest such report, largest holding first.
- , a director: 3,738 shares (Form 3, 2026-03-18).
- , a director: 865 shares (Form 4, 2026-03-31).
- , a director: 800 shares (Form 3, 2026-03-18).
Shares only: the company's cover page does not give one share count for a single class, so no percentage is worked out.
How much has Costamare Bulkers Holdings Limited raised?
No fundraising or offering filing from Costamare Bulkers Holdings Limited is on file with us.
Keep reading
More on Costamare Bulkers Holdings Limited and the records around it.
Costamare Bulkers Holdings Limited elsewhere on the record
- 5%+ stake filings Jul 2026
Companies that share a holder
- Konstantakopoulos Konstantinos also filed stake reports on 1 other company: Seanergy Maritime Holdings Corp. (Sep 2026)
- Dimensional Fund Advisors LP also filed stake reports on 366 other companies: Acadia Healthcare Co Inc (Oct 2026), ADT Inc (Oct 2026), AGCO Corp (Oct 2026)
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