SCHEDULE 13D/A 0000950157-25-000743 0001513017 XXXXXXXX LIVE 2 Common Stock, $0.0001 Par Value 10/16/2025 false 0002033535 Y2001C101 Costamare Bulkers Holdings Ltd

7 Rue du Gabian Monaco O9 98000

Konstantinos Konstantakopoulos 30(210)9490050 c/o Costamare Shipping Company S.A. 60 Zephyrou Street and Syngrou Avenue Athens J3 17564 Copy to: D. Scott Bennett, Esq 212-474-1000 Cravath, Swaine & Moore LLP Two Manhattan West, 375 Ninth Avenue New York NY 10001 0001513017 Konstantakopoulos Konstantinos a SC OO J3 7458806 7458806 7458806 N 30.9 IN Note to 11: As of the date hereof, Konstantinos Konstantakopoulos owns 7,458,806 shares. This number also includes (1) 2,985,999 shares owned by Kent Maritime Investments S.A., 846 shares owned by Costamare Shipping Company S.A. and 945,318 shares owned by Longshaw Maritime Investments S.A. and (2) half of the shares (731,950 shares) owned by Costamare Shipping Services Ltd. Note to 13: The percent ownership is calculated based upon an aggregate of 24,119,963 shares outstanding. Y Kent Maritime Investments S.A. a OO 1T 2985999 2985999 2985999 N 12.4 CO Note to 11: Kent Maritime Investments S.A. is controlled by Konstantinos Konstantakopoulos, resulting in his indirect ownership of all 2,985,999 shares of common stock of the Issuer. Note to 13: The percent ownership is calculated based upon an aggregate of 24,119,963 shares outstanding. Y Costamare Shipping Company S.A. a OO R1 846 846 846 N 0 CO Note to 11: Costamare Shipping Company S.A. is controlled by Konstantinos Konstantakopoulos, resulting in his indirect ownership of all 846 shares of common stock of the Issuer. Note to 13: The percent ownership is calculated based upon an aggregate of 24,119,963 shares outstanding. Y Longshaw Maritime Investments S.A. a OO 1T 945318 945318 945318 N 3.9 CO Note to 11: Longshaw Maritime Investments S.A. is controlled by Konstantinos Konstantakopoulos, resulting in his indirect ownership of all 945,318 shares of the common stock of the Issuer. Note to 13: The percent ownership is calculated based upon an aggregate of 24,119,963 shares outstanding. Y Costamare Shipping Services Ltd. a SC OO 1T 731950 731950 731950 N 3 CO Note to 11: Konstantinos Konstantakopoulos owns 50% of the outstanding equity of Costamare Shipping Services Ltd., resulting in his indirect ownership of half of the stock (731,950 shares) owned by Costamare Shipping Services Ltd. Note to 13: The percent ownership is calculated based upon an aggregate of 24,119,963 shares outstanding. Common Stock, $0.0001 Par Value Costamare Bulkers Holdings Ltd 7 Rue du Gabian Monaco O9 98000 This Amendment No. 2 (this "Amendment") amends and restates certain portions of the Schedule 13D filed by Konstantinos Konstantakopoulos, Kent Maritime Investments S.A., Costamare Shipping Company S.A., Longshaw Maritime Investments S.A. and Costamare Shipping Services Ltd. dated May 6, 2025, as amended on August 28, 2025 (the "Schedule 13D/A"), relating to shares of common stock, par value $0.0001 per share (the "Shares") of Costamare Bulkers Holdings Limited (the "Issuer"), whose principal business office is located at 7 Rue du Gabian, MC 98000 Monaco. Except as set forth below, all Items in the Schedule 13D/A remain unchanged. Capitalized terms used but not defined herein have the meanings ascribed to them in the Schedule 13D/A. See Items 11 and 13 on the cover pages to this Schedule 13D/A for the aggregate number and percentage of the class of securities identified pursuant to Item 1 owned by each Reporting Person. Number of Shares as to which each Reporting Person has: i. Sole power to vote or to direct the vote: See item 7 on cover pages to this Amendment. ii. Shared power to vote or to direct the vote: See item 8 on cover pages to this Amendment. iii. Sole power to dispose or direct the disposition: See item 9 on cover pages to this Amendment. iv. Shared power to dispose or direct the disposition: See item 10 on cover pages to this Amendment. The information provided in Item 3 of the Schedule 13D/A is hereby incorporated by reference herein and supplemented as follows for the past 60 days by the information set forth in Exhibit 99.1 to this Amendment, which is incorporated herein by reference. Exhibit 99.1: TRANSACTION INFORMATION Konstantakopoulos Konstantinos /s/ Konstantinos Konstantakopoulos 10/20/2025 Kent Maritime Investments S.A. /s/ Konstantinos Konstantakopoulos 10/20/2025 Costamare Shipping Company S.A. /s/ Konstantinos Konstantakopoulos 10/20/2025 Longshaw Maritime Investments S.A. /s/ Konstantinos Konstantakopoulos 10/20/2025 Costamare Shipping Services Ltd. /s/ Athanasios Beis 10/20/2025