ATHENS, GREECE, May 16, 2024 - Okeanis Eco Tankers Corp. ("OET" or the
"Company") (NYSE: ECO / OSE: OET), announced today that the Company's board of
directors (the "Board") has declared a dividend on its common shares, which is
classified as a return of capital for accounting purposes (the "Dividend").

Due to implementation of the Central Securities Depository Regulation ("CSDR")
in Norway, shareholders who hold shares registered in Euronext Securities Oslo,
the central securities depository in Norway ("VPS") should please note the
information on the payment date to the shares registered in VPS below. 

Effective as of May 28, 2024, the New York Stock Exchange ("NYSE") will settle
its trades on a T+1 basis, while the Oslo Stock Exchange ("OSE") will continue
to settle its trades on a T+2 basis. As a result, there will be different
ex-dividend dates between the two exchanges, as set out below. 

Key information relating to the Dividend:

o	Dividend amount: USD 1.10 per common share.
o	Declared currency: USD. Dividends payable to common shares registered in the
Euronext VPS will be distributed in NOK.
o	Date of Board approval: May 15, 2024.
o	Last day including right OSE: June 3, 2024, the last date on which the
Company's common shares trading on the OSE will include the entitlement to the
Dividend.
o	Last day including right NYSE: June 4, 2024, the last date on which the
Company's common shares trading on the NYSE will include the entitlement to the
Dividend.
o	Ex-date OSE: June 4, 2024, the date on which the Company's common shares will
begin trading on the OSE without the entitlement to the Dividend.
o	Ex-date NYSE: June 5, 2024, the date on which the Company's common shares will
begin trading on the NYSE without the entitlement to the Dividend.
o	Record date OSE and NYSE: June 5, 2024.
o	Payment date: June 20, 2024. Due to the implementation of CSDR in Norway, the
Dividend payable on common shares that are registered in the Euronext VPS is
expected to be distributed to Euronext VPS shareholders on or about June 25,
2024.

The Company encourages you to contact your bank, broker, nominee or other
institution if you have any questions regarding the mechanics and timing of
having the Dividend attributable to your common shares credited to your account.

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 U.S. Securities and Exchange
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