Hyliion Holdings Corp.

Hyliion Holdings Corp. originated as Tortoise Acquisition Corp., a blank-check company that completed its SPAC merger in October 2020 under the pre-merger ticker SHLL. Sponsored by Tortoise Capital Advisors, the vehicle targeted the commercial transportation sector, specifically electrified powertrain solutions for Class 8 semi-trucks. The IPO closed in 2020, and the combined public entity subsequently traded on the NYSE under the ticker HYLN. Hyliion has since refocused its product roadmap toward stationary power generation through its KARNO generator platform. The company filed an 8-K with the SEC on May 21, 2025. For full filing history, financials, and SPAC analytics on Hyliion and thousands of other transactions, sign up for complete data access at SpacDesk.