C3is shares surge 13.56% intraday after acquiring a 2011-built product tanker and securing $98M ATM financing for fleet expansion.

C3is Inc. surged 13.56% intraday, driven by the company's announcement of 2025 Q4 and full-year unaudited financial results, a $22.9 million agreement to acquire a product tanker in 2026, and a $98 million ATM sales agreement to fund operations and ship acquisitions. The vessel acquisition, a 47,203 DWT product tanker built in 2011, is expected to.