ATHENS, Greece, Dec. 12, 2025 (GLOBE NEWSWIRE) -- C3is Inc. (NASDAQ: CISS) (the “Company”), a ship-owning company providing dry bulk and tanker seaborne transportation services, today announced the closing of a public offering made on a reasonable best efforts basis with gross proceeds to the Company of approximately $9 million, before deducting placement agent fees and other offering expenses payable by the Company. The offering consisted of 7,500,000 units, each consisting of (i) one (1) share of common s ...