Reference is made to Okeanis Eco Tankers stock exchange announcements made on November 2, 2023, December 4, 2023 and December 5, 2023 regarding the Company’s contemplated listing of its common shares on the New York Stock Exchange , its share re-registration process (as further described therein as “Share Registration Conversion”), and the trading suspension in the Company’s shares on Oslo Bors (as further described therein as “Trading Suspension”).

OET is pleased to announce that its common shares will commence trading on NYSE from and including December 11, 2023. Simultaneously with the NYSE listing, the common shares of OET will be secondary listed on Oslo Bors.

The Company’s common shares will be traded on the NYSE under the ticker code “ECO” and on the Oslo Bors under the ticker code “OET”.

The Share Registration Conversion, in which the Company implemented an amendment to the registration structure for its common shares, whereby all common shares are primarily held and settled within the Depository Trust Company in the United States and secondarily held and settled in VPS through a central securities depository link, has now been implemented.

The Trading Suspension on the Company’s common shares on Oslo Bors, which has been in effect for the trading days on December 7, 2023 and today, has now ended. The Company’s common shares will resume normal trading from start of trading on Oslo Bors from and including December 11, 2023.

Reference is also made to the Company’s stock exchange announcement on November 2, 2023 regarding Oslo Bors’ resolution to exempt Okeanis Eco Tankers Corp. from all the provisions regulating voluntary and mandatory takeover offers in Chapter 6 of the Norwegian Securities Trading Act (the “Norwegian Takeover Rules”). The resolution by Oslo Bors is subject to, and shall take effect from, the listing of the Company’s common shares on NYSE and the simultaneous change from primary to secondary listing on Oslo Bors. The resolution will consequently become effective from and including the first day of listing of the common shares of the Company on NYSE, which will take place on December 11, 2023, after which the Norwegian Takeover Rules will not apply to Okeanis Eco Tankers Corp. nor trading in common shares of Okeanis Eco Tankers Corp.