Nauticus Robotics, Inc., which completed its business combination with CleanTech Acquisition Corp. (Nasdaq: CLAQ), sponsored by CleanTech Capital Group LLC, is a Texas-based autonomous subsea robotics company that went public through the SPAC vehicle in 2022 following CleanTech Acquisition Corp.'s IPO in 2021. The company operates in the maritime technology and autonomous systems sector, developing ocean robots and software platforms for subsea inspection, maintenance, and repair services. The April 2026 amended current report on Form 8-K/A reflects continued SEC reporting obligations for the combined company. Visit SpacDesk and create a free account to access the full filing history, sponsor background, and deal analytics for CLAQ and hundreds of other SPAC transactions.