X0306 4 2020-10-01 0 0001759631 Hyliion Holdings Corp. HYLN 0001825486 Healy Thomas J. C/O HYLIION HOLDINGS CORP. 1202 BMC DRIVE, SUITE 100 CEDAR PARK TX 78613 1 1 1 0 Chief Executive Officer Common Stock 2020-10-01 4 A 0 34972856 A 34972856 D Received pursuant to the Business Combination Agreement and Plan of Reorganization, dated as of June 18, 2020, by and among Tortoise Acquisition Corp. ("Tortoise"), Hyliion Inc. ("Legacy Hyliion") and SHLL Merger Sub Inc., a wholly-owned subsidiary of Tortoise ("Merger Sub"), pursuant to which Merger Sub merged with and into Legacy Hyliion, with Legacy Hyliion surviving the merger as a wholly-owned subsidiary of Tortoise (which subsequently changed its name to "Hyliion Holdings Corp.", the "Issuer"). /s/ Thomas J. Healy 2020-10-05