SBLK: 6-K company filing

6-K 1 ef20083535_form6k.htm 6-K 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 October 2026 Commission File Number: 001-33869 STAR BULK CARRIERS CORP. (Translation of registrant’s name into English) Star Bulk Carriers Corp. c/o Star Bulk Management Inc. 40 Agiou Konstantinou Street, 15124 Maroussi, Athens, Greece (Address of principal executive offices) 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 1.1 is a copy of the Second Amended and Restated At-The-Market Sales Agreement, dated October 9, 2026, by and between Star Bulk Carriers Corp. (the “Company”) and Deutsche Bank Securities Inc. in respect of the related at-the-market (ATM) equity offering (the “Deutsche Bank ATM Offering”). Attached as Exhibit 1.2 is a copy of the Second Amended and Restated At-The-Market Sales Agreement, dated October 9, 2026, by and between the Company and Jefferies LLC in respect of the related at-the-market (ATM) equity offering (the “Jefferies ATM Offering”). Attached to this Report as Exhibit 5.1 is the opinion of Seward & Kissel LLP, relating to the common shares, par value $0.01 per share (the “Common Shares”), in respect of the Deutsche Bank ATM Offering. Attached to this Report as Exhibit 5.2 is the opinion of Seward & Kissel LLP, relating to the Common Shares in respect of the Jefferies ATM Offering. A copy of the press release of the Company dated October 9, 2026 titled “Star Bulk Carriers Corp. Announces Renewal of Existing ATM Equity Offering Programs” is furnish