Back to News
Feb 5, 2026 4:00 AM

What Fueled C3is Inc (CISS) Stock 29% After Hours Jump

C3is Inc. (NASDAQ:CISS) shares rose 28.95% to $1.96 in after-hours trading on Wednesday, following a Securities and Exchange Commission filing disclosing that Imperial Petroleum Inc. (NASDAQ:IMPP) owns 81.9% of the company.

C3is and Imperial Petroleum are both Greece-based international shipping and transportation companies.

Imperial Petroleum Reports 9.9 Million Share Position

Imperial Petroleum disclosed beneficial ownership of 9.9 million shares in a SEC filing on Feb. 4.

The filing updates the number of shares beneficially owned following changes in the conversion price of C3is’s 5.0% Series A Cumulative Convertible Perpetual Preferred Stock.

The conversion price was adjusted to $1.5131 following C3is’s 1-for-20 reverse stock split effective Jan. 26 and related adjustments to Class B-1, ...