ATHENS, GREECE, December 14, 2023 - Okeanis Eco Tankers Corp. (the "Company" or
"OET") (NYSE:ECO / OSE:OET), has been notified of the following transaction:
 
Iraklis Sbarounis, Chief Financial Officer of the Company, on December 13, 2023,
purchased 1,000 shares of the Company on NYSE at a price of USD 23.10 per share.
Following the transaction, Iraklis Sbarounis owns 3,500 shares in the Company.

Primary Insider notification is enclosed. 

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

This information is subject to the disclosure requirements pursuant to
Regulation EU 596/2014 (MAR) article 19 number 3 and the Norwegian Securities
Trading Act section 5-12.

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.

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