Nauticus Robotics, Inc.

Nauticus Robotics, Inc. (ticker: CLAQ) filed an amended registration statement, Form S-1/A, with the SEC on June 22, 2026. The company entered the public markets through a SPAC combination with CleanTech Acquisition Corp, sponsored by CleanTech Capital Group LLC, which completed its blank-check IPO in 2021. Nauticus Robotics designs and commercializes autonomous underwater vehicles and subsea robotics platforms, serving the offshore energy and defense industries. The S-1/A amendment represents continued post-merger regulatory compliance activity for the combined entity. Investors and analysts tracking de-SPAC filings in the marine robotics and autonomous systems sector can sign up at SpacDesk for the full filing history, sponsor details, and deal analytics on CLAQ.