Hyliion (HYLN) - 2025 Q1 - Quarterly Results

Exhibit 99.1 HYLIION HOLDINGS REPORTS FIRST-QUARTER 2025 FINANCIAL RESULTS AUSTIN, Texas, May 13, 2025 – Hyliion Holdings Corp. (NYSE American: HYLN) ("Hyliion"), a developer of modular power plant technology, today reported financial results for the first quarter ended March 31, 2025, and provided key updates on the development and commercialization of the KARNO™ generator platform. Key Business Highlights Executive Commentary "We kicked off 2025 with meaningful momentum, marked by the successful public de ...