C3IS INC. Reverse Stock Split

C3IS Inc. executed a one-for-seven reverse stock split, effective April 26, 2026. This action reduced the number of outstanding common shares from approximately 3.8 million to 528,305. The split adjusted the trading basis on The Nasdaq Capital Market starting April 27, 2026. No fractional shares were issued; instead, stockholders received cash payments in lieu of fractions. Outstanding warrants and Series A Convertible Preferred Stock were proportionately adjusted, including potential adjustments to exercise prices and conversion prices based on trading volume. The par value and other terms of the common stock remained unchanged. The post-split shares have a new CUSIP number (Y18284 300) and continue to trade under the symbol "CISS".