Okeanis Eco Tankers (ECO) files 6-K on Q2 2025 dividend and F-3 ties

Rhea-AI Filing Summary

Okeanis Eco Tankers Corp. filed a Form 6-K as a foreign private issuer to furnish a press release titled “Okeanis Eco Tankers Corp. – Key Information relating to Q2 2025 dividend,” dated August 12, 2025. The filing indicates that the press release contains key details about the company’s dividend for the second quarter of 2025.

The company also states that this report and its exhibit are incorporated by reference into its existing shelf registration statements on Form F-3 (File Nos. 333-287032 and 333-287036), which were declared effective on May 21, 2025. The document is signed on behalf of the company by Chief Financial Officer Iraklis Sbarounis.

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 2025

Commission File Number: 001-41858

Okeanis Eco Tankers Corp.

(Translation of registrant’s name into English)

c/o OET Chartering Inc., Ethnarchou Makariou Ave., & 2 D. Falireos St., 185 47 N. Faliro, Greece

(Address of principal executive office)

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   x          Form 40-F   ¨

INFORMATION CONTAINED IN THIS REPORT ON FORM 6-K

Attached to this report on Form 6-K as Exhibit 99.1 is a copy of the press release published by Okeanis Eco Tankers Corp. on August 12, 2025 titled “Okeanis Eco Tankers Corp. – Key Information relating to Q2 2025 dividend.”

This Report and the exhibit(s) hereto are hereby incorporated by reference into the registrant’s registration statements: (A) on Form F-3 (File No. 333-287032), filed with the Securities and Exchange Commission on May 7, 2025 and declared effective on May 21, 2025 and (B) on Form F-3 (File No. 333-287036), filed with the Securities and Exchange Commission on May 7, 2025 and declared effective on May 21, 2025.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

	Okeanis Eco Tankers Corp.
	By:	/s/ Iraklis Sbarounis
	Name:	Iraklis Sbarounis
	Title:	Chief Financial Officer

Date: August 12, 2025

FAQ

What does Okeanis Eco Tankers Corp. (ECO) disclose in this Form 6-K?

The Form 6-K states that Okeanis Eco Tankers Corp. furnished a press release titled “Okeanis Eco Tankers Corp. – Key Information relating to Q2 2025 dividend,” which provides details about its Q2 2025 dividend.

How is the Okeanis Eco Tankers (ECO) Q2 2025 dividend information provided?

The information is provided through a press release dated August 12, 2025, attached as Exhibit 99.1 to the Form 6-K.

How does this Form 6-K relate to Okeanis Eco Tankers’ (ECO) F-3 shelf registrations?

The Form 6-K and its exhibit are incorporated by reference into Okeanis Eco Tankers Corp.’s registration statements on Form F-3 with File Nos. 333-287032 and 333-287036, both effective May 21, 2025.

What type of annual report does Okeanis Eco Tankers Corp. (ECO) file?

The company indicates that it files its annual reports under cover of Form 20-F.

Who signed this Okeanis Eco Tankers Corp. (ECO) Form 6-K?

The report was signed on behalf of Okeanis Eco Tankers Corp. by Iraklis Sbarounis, the company’s Chief Financial Officer.

What is the significance of incorporating the dividend press release into the F-3 registrations for ECO?

By incorporating this report and the dividend press release into the Form F-3 registration statements, the information becomes part of the disclosure available to potential investors under those shelf registrations.