Hyliion Holdings Corp. completed its business combination in October 2020 with Tortoise Acquisition Corp., the blank-check vehicle that traded on the New York Stock Exchange under the ticker SHLL and was sponsored by Tortoise Capital Advisors. The transaction took Hyliion public as a developer of electrified powertrain solutions for Class 8 commercial trucks, placing the company within the clean transportation and heavy-vehicle electrification sector. Following the merger close, the combined company began trading under the ticker HYLN. The July 24, 2026 Form 8-K filing, bearing accession number 0001628280-26-049453, represents a current report submitted by Hyliion as an operating public company. For the full SHLL deal history, sponsor terms, and the latest SEC filings on Hyliion Holdings, sign up for complete data access at SpacDesk.