Rubico announces pricing of $7.5 million underwritten public offering

Rubico Inc. (“Rubico” or the “Company”), a global provider of shipping transportation services specializing in the ownership of vessels, today announced the pricing of its underwritten public offering of 12,315,270 units at a public offering price of $0.609 per unit. Each unit consists of one common share and one Class A warrant to purchase one common share.

Each warrant will expire one (1) year from the date of issuance, will be immediately exercisable upon issuance at an initial exercise price of $0.609 per share, subject to adjustment on the fourth and eighth trading days following the closing of the offering to 70% and 50%, respectively, of the initial exercise price, and the number of common shares underlying the warrants will be proportionally increased. The warrants may also be exercised on a zero cash exercise option pursuant to which the holder may exchange each warrant for twice the number of common shares issuable on a cash exercise of the warrant. Prior to the closing of this offering, the Company anticipates having 5,297,366 common shares outstanding.

Gross proceeds to the Company, before deducting underwriting discounts and commissions and other offering expenses, are expected to be approximately $7.5 million. The offering is expected to close on or about November 6, 2025, subject to the satisfaction of customary closing conditions.

Maxim Group LLC is acting as sole book-running manager in connection with the offering.

The Company has granted the underwriters a 45-day option to purchase up to an additional 1,847,290 common shares and/or additional warrants to purchase up to 1,847,290 common shares, at its respective public offering price less underwriting discounts and commissions.

A registration statement on Form F-1 (File No. 333-290426), as amended, was filed with the U.S. Securities and Exchange Commission (“SEC”) and became effective in accordance with Section 8(a) of the Securities and Exchange Act of 1933, as amended, on November 4, 2025.