Nauticus Robotics, Inc. (ticker: CLAQ) is a subsea robotics and autonomous ocean systems company that reached the public markets through a business combination with CleanTech Acquisition Corp., a blank-check vehicle that held its initial public offering in 2021. The merger closed in 2022, and the combined entity operates in the maritime technology and offshore automation sector, developing autonomous underwater vehicles and software platforms for offshore energy, defense, and ocean services applications. A Form 8-K filed in February 2026 reflects the company's continued public reporting obligations. Investors and researchers seeking sponsor details, full filing histories, and deal analytics for CLAQ can sign up for complete access at SpacDesk.