Rigetti Computing, Inc. (Nasdaq: RGTI) is a quantum computing hardware and software company that reached the public markets through a SPAC merger with Supernova Partners Acquisition Company II, Ltd., sponsored by Supernova Partners Management Company. The definitive business combination agreement was announced in October 2021, with Rigetti filing an 8-K on October 6, 2021 to disclose the transaction; the merger closed in March 2022. Supernova Partners Acquisition Company II completed its IPO in 2021, targeting the technology sector. Rigetti designs quantum processing units and provides cloud-based quantum computing services to commercial and government customers. For the complete filing history, deal timeline, and data on RGTI, sign up for SpacDesk.