ATHENS, GREECE, November 7, 2025 - Okeanis Eco Tankers Corp. (the "Company" or
"OET") (NYSE:ECO / OSE:OET), will report unaudited condensed financial results
for the third quarter and nine-month period ending September 30, 2025, after
market close on the NYSE, on Wednesday, November 12, 2025, and a webcast will be
held at 13:30 CET, on Thursday, November 13, 2025.

Participants may access the webcast using the following link: 
https://events.q4inc.com/attendee/564091800

The presentation material, which will be used in the webcast, will be available
for download from the Investor Relations section at www.okeanisecotankers.com
prior to the live webcast.

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