X0202 SCHEDULE 13G/A 0002114899-26-000003 0002114899 XXXXXXXX LIVE 1 Class A Ordinary Shares 06/11/2026 0001943421 Rubico Inc. Y1250N123 VAS SOFIAS 1 & MEG. ALEXANDROU VAS SOFIAS 1 & MEG. ALEXANDROU ATHENS J3 19002 Rule 13d-1(c) Trillium Trading, LLC NY 0.00 0.00 0.00 0.00 0.00 0.0 OO Rubico Inc. VAS SOFIAS 1 & MEG. ALEXANDROU, VAS SOFIAS 1 & MEG. ALEXANDROU, ATHENS, GREECE, 19002 Trillium Trading, LLC 417 Fifth Ave, New York, NY 10016 Limited liability company organized under the laws of the State of Delaware, United States of America Y 0 0 0 0 0 Y Y Y Y Y N By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under § 240.14a-11. Trillium Trading, LLC Louis Capone 06/12/2026