Hyliion Holdings Corp., which traded under the ticker SHLL, was a special purpose acquisition company sponsored by Tortoise Capital Advisors that completed its IPO in 2019. The vehicle targeted the energy transition and clean commercial transportation sector, ultimately closing a business combination with Hyliion Inc., a developer of hybrid and fully electric powertrain systems for Class 8 trucks, in October 2020. Following the merger, the combined company rebranded and traded under the ticker HYLN on the New York Stock Exchange. The deal was among the earlier high-profile SPAC transactions in the electric and alternative-fuel commercial vehicle space. Sign up for SpacDesk to access the full filing history, deal timelines, and sponsor data for SHLL and hundreds of other SPAC transactions.