Hyliion Holdings Corp., associated with the blank-check vehicle that traded under ticker SHLL, was a SPAC that completed its initial public offering in 2019 with sponsorship from Tortoise Capital Advisors, a Kansas City-based investment manager known for its focus on energy infrastructure and sustainability themes. The November 2019 10-Q filing captures the company in its pre-combination search phase, operating within the clean energy and transportation technology sector. The SPAC ultimately announced and closed a business combination with Hyliion, a developer of electrified powertrain solutions for Class 8 semi-trucks, in late 2020, with the combined entity subsequently trading under the HYLN ticker. Visit SpacDesk and sign up for full access to SHLL's complete filing history, deal metrics, and sponsor track record.