ATHENS, GREECE, May 7, 2025 - Okeanis Eco Tankers Corp. (the "Company" or "OET")
(NYSE:ECO / OSE:OET), announced today that it has filed with the U.S. Securities
and Exchange Commission (the "SEC") a shelf registration statement on Form F-3
on May 7, 2025. The shelf registration statement will enable the Company to more
quickly and efficiently raise capital in the future. It provides for up to
$500,000,000 in capital, which may be used for, among other things, potential
acquisitions, strategic initiatives, reducing outstanding debt or other general
corporate purposes. In addition, the Company also filed with the SEC a separate
"resale" registration statement on Form F-3 relating to the resale of up to
18,102,286 common shares that are beneficially held by affiliates of the Company
and that are otherwise currently not freely tradable in the United States
without limitations. Each registration statement on Form F-3 may be found on the
SEC's website (http://www.sec.gov).

The Company has no present intention to utilize the shelf registration
statement, and has received no indication whether the Company's affiliates are
planning to sell any of their shares in the Company that are registered under
the "resale" registration statement on Form F-3.

Contacts
 
Company:
Iraklis Sbarounis, CFO
Tel: +30 210 480 4200
ir@okeanisecotankers.com
 
Investor Relations / Media Contact:
Nicolas Bornozis, President
Capital Link, Inc.
230 Park Avenue, Suite 1540, New York, N.Y. 10169
Tel: +1 (212) 661-7566
okeanisecotankers@capitallink.com

About OET
OET is a leading international tanker company providing seaborne transportation
of crude oil and refined products. The Company was incorporated on April 30,
2018 under the laws of the Republic of the Marshall Islands and is listed on
Oslo Stock Exchange under the symbol OET and the New York Stock Exchange under
the symbol ECO. The sailing fleet consists of six modern scrubber-fitted Suezmax
tankers and eight modern scrubber-fitted VLCC tankers.
 
Forward-Looking Statements
This communication contains "forward-looking statements", including as defined
under U.S. federal securities laws. Forward-looking statements provide the
Company's current expectations or forecasts of future events. Forward-looking
statements include statements about the Company's expectations, beliefs, plans,
objectives, intentions, assumptions and other statements that are not historical
facts or that are not present facts or conditions. Words or phrases such as
"anticipate," "believe," "continue," "estimate," "expect," "hope," "intend,"
"may," "ongoing," "plan," "potential," "predict," "project," "should," "will" or
similar words or phrases, or the negatives of those words or phrases, may
identify forward-looking statements, but the absence of these words does not
necessarily mean that a statement is not forward-looking. Forward-looking
statements are subject to known and unknown risks and uncertainties and are
based on potentially inaccurate assumptions that could cause actual results to
differ materially from those expected or implied by the forward-looking
statements. The Company's actual results could differ materially from those
anticipated in forward-looking statements for many reasons, including as
described in the Company's filings with the U.S. Securities and Exchange
Commission (the "SEC"). Accordingly, you should not unduly rely on these
forward-looking statements, which speak only as of the date of this
communication. Factors that could cause actual results to differ materially
include, but are not limited to, the Company's operating or financial results