Rainier Acquisition Corp (Nasdaq: RNAQ) is a blank-check company that registered its securities under Section 12(b) of the Securities Exchange Act on August 25, 2026, via an 8-A12B filing with the SEC, marking the completion of its initial public offering. The vehicle is structured as a special purpose acquisition company and is currently in its search phase, seeking a private operating business to bring to public markets through a merger or similar business combination. The sponsor name and target sector have not been publicly disclosed in the available filing record at this time. For the full filing history, deal terms, shareholder data, and real-time status updates on RNAQ and hundreds of other active SPACs, create a free account at SpacDesk.