ArcLight Clean Transition Corp (Nasdaq: ACTC), sponsored by ArcLight Capital Partners, filed an 8-K with the SEC on June 11, 2021, in connection with its proposed business combination with Proterra Inc., an electric bus and commercial vehicle manufacturer operating in the clean transportation sector. ArcLight Clean Transition Corp completed its initial public offering in 2020, targeting the clean energy and sustainability space. The filing came as the transaction approached its closing, which would bring Proterra to the public markets as a combined company. Proterra had established itself as a leading developer of battery technology and zero-emission transit vehicles for municipal and commercial fleets across North America. Visit SpacDesk and sign up for full access to ACTC filings, deal timelines, and sponsor data across every active and historical SPAC.