SBLK: 6-K company filing

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 2026 Commission File Number 001-33869 STAR BULK CARRIERS CORP. (Translation of registrant’s name into English) --12-31 Star Bulk Carriers Corp. c/o Star Bulk Management Inc. 40 Agiou Konstantinou Street, 15124 Maroussi, Athens, Greece (Address of principal executive offices) June 30, 2026 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 ☐ INFORMATION CONTAINED IN THIS FORM 6-K REPORT Attached as Exhibit 99.1 to this Form 6-K is a Management’s Discussion and Analysis of Financial Condition and Results of Operations and the unaudited interim condensed consolidated financial statements of Star Bulk Carriers Corp. (the “Company”) as of June 30, 2026 and for the six-month periods ended June 30, 2025 and 2026. The information contained in Exhibit 99.1 of this Form 6-K is hereby incorporated by reference into the registrant’s Registration Statement on Form F-3 (File No. 333-286185) and Registration Statement on Form S-8 (File No. 333-176922), in each case to the extent not superseded by information subsequently filed or furnished (to the extent we expressly state that we incorporate such furnished information by reference) by the Company under the Securities Act of 1933 or the Securities Exchange Act of 1934, in each case as amended. i CAUTIONARY STATEMENT CONCERNING FORWARD-LOOKING INFORMATION This Form 6-K, and the documents to which the Company refers in this Form 6-K, as well as information included in oral statements or other written statements made or to be made by the C