ATHENS, GREECE, April 25, 2025 - Okeanis Eco Tankers Corp. (the "Company" or
"OET") (NYSE:ECO / OSE:OET), announced today that it has scheduled its Annual
Meeting of Shareholders for May 30, 2025, at 11:00 a.m. Greek time (the "Annual
Meeting"). The record date for determining shareholders entitled to participate
at the Annual Meeting is April 22, 2025. The business of the Annual Meeting is
to elect eight directors to serve until the next annual meeting of shareholders
or until their successors are elected and qualified, and to ratify the
appointment of Deloitte Certified Public Accountants S.A. as the Company's
independent registered public accounting firm for the fiscal year ending
December 31, 2025. Annual Meeting documentation and instructions for voting are
expected to be mailed to all shareholders of record on or about April 25, 2025,
and will be furnished to the U.S. Securities and Exchange Commission (the
"Commission") and available on the Commission's website at www.sec.gov.

Separately, as part of the Annual Meeting process, the Company announced today
that the board of directors of the Company has been expanded to consist of eight
persons from the previous seven person board of directors.  The vacancy on the
board of directors of the Company created by this change is proposed to be
filled at the Annual Meeting, rather than by the remaining directors.

The Company has decided to nominate Mr. Dimitrios Papalexopoulos for election as
a director, to fill this vacancy. Dimitrios Papalexopoulos is a business
executive with experience in management, business development, operations and
commercial marketing across media, publishing, technology and fast-moving
consumer goods. He is currently and has been since 2022 the Managing Director of
Kathimerines Ekdoseis, a media and publishing company, and publisher of
prominent Greek newspaper Kathimerini. He was previously its Chief Business
Officer from 2019 to 2021.  Prior to joining Kathimerines Ekdoseis, Mr.
Papalexopoulos held senior positions in business development, sales, and brand
management in Google between 2011 and 2018 and in Procter & Gamble between 2007
and 2010. He holds a B.A. in International and European Economic Studies from
the Athens University of Economics and Business, a B.Sc. in Business
Administration from the American College of Greece, an M.Sc. in International
Employment Relations and HR Management from the London School of Economics and
Political Science (LSE), and an MBA from the Massachusetts Institute of
Technology (MIT) under the Sloan Fellows Program. Mr. Papalexopoulos has been a
member of the Governing Council of the Athens University of Economics and
Business since 2023.

The Company's executive management team will remain unchanged. They will
continue to work closely with the Company's board of directors.

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 Børs 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 Commission. 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