C3is (NASDAQ:CISS) stock is on the rise Thursday as investors reacted to updated stakes in the seaborne transportation company following a public offering. First off, this public offering included 28 million units. Each of these units contained one shares of CISS stock, one half of a Class B-1 Warrant for another share and one Class B-2 Warrant for a share of CISS. The big news here is Imperial Petroleum (NASDAQ:IMPP) now holds a 67.9% stake in C3is. That comes from its 60 million shares held through 5% Ser ...