Proterra Inc. (Nasdaq: PTRA) reached public markets through a business combination with ArcLight Clean Transition Corp, a blank-check company sponsored by ArcLight Capital Partners that completed its initial public offering in 2020 targeting the clean energy and transportation sector. The merger closed in June 2021, bringing Proterra's battery-electric transit bus and commercial vehicle charging platform to public markets. The company subsequently filed for Chapter 11 bankruptcy protection in August 2023, and its core assets were sold through court-supervised proceedings. This Form 10-Q, filed in May 2021, predates the deal's close and reflects operations during the pendency of the merger. For full filing history, deal metrics, and SPAC analytics on Proterra and thousands of other transactions, create a free account at SpacDesk.