ATHENS, GREECE, July 29, 2022 - Okeanis Eco Tankers Corp. (the "Company" or
"OET") (Oslo Børs: OET) announces that Mr. Ioannis Alafouzos, Chairman of OET's
Board of Directors has today sold 85,000 common shares in OET to Glafki Marine
Corp. ("Glafki"), a company controlled by Mr. Ioannis Alafouzos. 

Sequentially, Glafki has today sold 6,646,063 common shares in OET to
Hospitality Assets Corp. ("Hospitality"), a company controlled by Mr.
Themistoklis Alafouzos, brother of Mr. Ioannis Alafouzos. 

This transaction is done by way of a share exchange in conjunction with Mr.
Ioannis Alafouzos' purchase of Mr. Themistoklis Alafouzos' minority shares in
Glafki, following which, Mr. Ioannis Alafouzos will be the sole shareholder in
Glafki, and the two brothers will have separate, indirect ownership in OET.
Going forward, Messrs. Alafouzos (through their respective, controlled
shareholding entities) will act in concert regarding their respective exercise
of shareholder rights in OET. 

Following the said transactions, Glafki owns 11,018,937 common shares in OET,
Hospitality owns 6,646,063 common shares in OET and, collectively Glafki and
Hospitality, own 17,665,000 common shares in OET, equal to 53.71% of the issued
and outstanding shares in the Company.

Primary Insiders notifications, pursuant to the Market Abuse Regulation article
19, are enclosed.

Contact: 
Konstantinos Oikonomopoulos, CFO
Tel: +30 210 480 4099 
Email: kgo@okeanisecotankers.com

About OET

OET is an 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. The sailing fleet consists of six modern
scrubber-fitted Suezmax tankers and eight modern scrubber-fitted VLCC tankers.

Forward-Looking Statements

Matters discussed in this release may contain certain forward-looking statements
relating to the business, financial performance and results of the Company
and/or the industry in which it operates, sometimes identified by the words
"believes", "expects", "intends", "anticipates", "forecast" and similar
expressions. The forward-looking statements contained in this release, including
assumptions, opinions and views of the Company or cited from third-party
sources, are solely opinions and forecasts that are subject to risks,
uncertainties and other factors that may cause actual events to differ
materially from any anticipated development. The Company does not provide any
assurance that the assumptions underlying such forward-looking statements are
free from errors, nor does the Company accept any responsibility for the future
accuracy of the opinions expressed in the presentation or the actual occurrence
of the forecast developments. No obligations are assumed to update any
forward-looking statements or to conform to these forward-looking statements to
actual results.

The information, opinions and forward-looking statements contained in this
announcement speak only as at its date and are subject to change without notice.

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