Pursuant to Articles 9 and 14 of Law 3556/2007 and Article 4.1.1 (8) of the Athens Stock Exchange Rulebook, as in force, the company under the name “Y/KNOT Invest S.A.” (the “Company”) announces the following to the investment community:

1. I)According to the TR1 notification dated 25/06/2026 received on the same date from the company under the name AQUA INVEST SINGLE-MEMBER PRIVATE COMPANY, on 25/06/2026 AQUA INVEST SINGLE-MEMBER PRIVATE COMPANY acquired all (100%) of the shares of INDIGO MARINE Inc., which directly holds approximately 30,62% of the voting rights of the Company and, therefore, AQUA INVEST SINGLE-MEMBER PRIVATE COMPANY indirectly acquired approximately 30,62% of the voting rights of the Company. Prior to the said change, AQUA INVEST SINGLE-MEMBER PRIVATE COMPANY did not hold, directly or indirectly, any voting rights of the Company.
2. II)According to the TR1 notification dated 25/06/2026 received on the same date from the German company under the name GSI Invest GmbH, on 25/06/2026 GSI Invest GmbH transferred all (100%) of the shares of INDIGO MARINE Inc. to AQUA INVEST SINGLE-MEMBER PRIVATE COMPANY, which it controls, and, therefore, continues to indirectly hold approximately 30,62% of the voting rights of the Company.

III) Furthermore, according to the relevant two (2) TR1 notifications dated 25/06/2026 received on 25/06/2026 from Panagiotis Tzortzis and Rigas Tzortzis, respectively, INDIGO MARINE Inc., which directly holds approximately 30,62% of the voting rights of the Company, is controlled by the company under the name AQUA INVEST SINGLE-MEMBER PRIVATE COMPANY, which is controlled by the German company under the name GSI Invest GmbH, which in turn is controlled by Mr. Rigas Tzortzis and Mr. Panagiotis Tzortzis, who act in concert within the meaning of Article 10 of Law 3556/2007 and who, therefore, continue to indirectly hold approximately 30,62% of the voting rights of the Company.

Kifisia, 25 June 2026