C3IS Inc. announced a one-for-forty (1-for-40) reverse stock split of its common stock to increase the market price and satisfy Nasdaq's minimum bid price requirement for continued listing. The split becomes effective at 11:59 pm Eastern Time on August 18, 2026, with split-adjusted trading beginning on August 19, 2026. This action reduces outstanding shares from approximately 57.6 million to 1.44 million and proportionately adjusts warrants and Series A Convertible Preferred Stock exercise prices. Fractional shares will be cashed out at the closing price on August 18, 2026. C3IS Inc. is a ship-owning company providing dry bulk and crude oil seaborne transportation services.