Proterra Inc completed its business combination with ArcLight Clean Transition Corp, which traded under the ticker ACTC, in June 2021 after the SPAC raised capital in its 2020 IPO. ArcLight Capital Partners, the energy-focused private equity firm, served as sponsor of the vehicle. Proterra operates in the electric vehicle and clean transportation sector, manufacturing battery-electric buses and commercial vehicle technology as well as charging and energy systems. The company filed an 8-K current report on June 28, 2023, signaling a material event during a period of heightened financial pressure for the post-merger entity. Proterra subsequently filed for Chapter 11 bankruptcy protection in August 2023. Sign up for SpacDesk to access the full filing history, sponsor intelligence, and deal-level analytics on ACTC and hundreds of other SPAC transactions.