As Of	Filer	Filing¹	For·On·As	Docs:Size	Issuer		Filing Agent

 10/7/20  Pang Stephen S.                   3          Director²   2:8K   Hyliion Holdings Corp.            DONNELLEY FIN… File16/FA 
 10/7/20  Cubbage Vincent T.                3          Director²   2:8K   Hyliion Holdings Corp.            DONNELLEY FIN… File16/FA 
 10/7/20  Hyliion Holdings Corp.            8-K/A:5,9   10/1/20    1:37K                                    EdgarAgents LLC/FA       
 10/7/20  Hyliion Holdings Corp.            8-K:1,2,3,4 10/1/20   15:1.8M                                   EdgarAgents LLC/FA       
 10/5/20  Tassin Sidney L                   4          Director²   1:6K   Hyliion Holdings Corp.            EdgarAgents LLC/FA       
 10/5/20  Semple Frank M                    4          Director²   1:6K   Hyliion Holdings Corp.            EdgarAgents LLC/FA       
 10/5/20  Orekar Andrew J.                  4          Director²   1:6K   Hyliion Holdings Corp.            EdgarAgents LLC/FA       
 10/5/20  Tortoise Sponsor LLC              4          10% Owner²  1:10K  Hyliion Holdings Corp.            EdgarAgents LLC/FA       
          TortoiseEcofin Borrower LLC
          TortoiseEcofin Investments, LLC
 10/5/20  TortoiseEcofin Borrower LLC       4          10% Owner²  1:11K  Hyliion Holdings Corp.            EdgarAgents LLC/FA       
          TortoiseEcofin Investments, LLC
 10/5/20  Olkkola Edward E                  4          Director²   1:9K   Hyliion Holdings Corp.            DONNELLEY FIN… File16/FA 
 10/5/20  Jenkins Howard M                  4          Dir.,%Own.² 1:11K  Hyliion Holdings Corp.            DONNELLEY FIN… File16/FA 
          Axioma Holdings, LLC
          Axioma Management, LLC
          Axioma Ventures, LLC
          Jenkins Alexander H.
          Lingam Kiran
 10/5/20  Sexton Patrick                    4          Officer²    1:7K   Hyliion Holdings Corp.            DONNELLEY FIN… File16/FA 
 10/5/20  Van de Vere Greg                  4          Officer²    1:10K  Hyliion Holdings Corp.            DONNELLEY FIN… File16/FA 
 10/5/20  Healy Thomas J.                   4          D,O,%Owner² 1:5K   Hyliion Holdings Corp.            DONNELLEY FIN… File16/FA 
 10/5/20  Knight Robert M Jr.               3          Director²   2:7K   Hyliion Holdings Corp.            DONNELLEY FIN… File16/FA 
 10/5/20  Card Andrew H Jr.                 3          Director²   2:7K   Hyliion Holdings Corp.            DONNELLEY FIN… File16/FA 
 10/5/20  Olkkola Edward E                  3          Director²   2:7K   Hyliion Holdings Corp.            DONNELLEY FIN… File16/FA 
 10/5/20  Axioma Ventures, LLC              3          Dir.,%Own.² 2:13K  Hyliion Holdings Corp.            DONNELLEY FIN… File16/FA 
          Axioma Holdings, LLC
          Axioma Management, LLC
          Jenkins Alexander H.
          Jenkins Howard M
          Lingam Kiran
 10/5/20  Sexton Patrick                    3          Officer²    2:7K   Hyliion Holdings Corp.            DONNELLEY FIN… File16/FA 
 10/5/20  Van de Vere Greg                  3          Officer²    2:6K   Hyliion Holdings Corp.            DONNELLEY FIN… File16/FA 

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¹	Filing/Form Types:  /A
	3	Initial Statement of Beneficial Ownership of Securities by an Insider — Form 3 { The Filer is an Insider² of the Issuer }.
	4	Statement of Changes in Beneficial Ownership of Securities by an Insider — Form 4 { The Filer is an Insider² of the Issuer }.
	8-K	Current Report — Form 8-K { Item 1: Business & Operations;  2: Financial Info;  3: Securities & Trading;  4: Accountants & Accounting;  5: Governance & Management;  6: Asset-Backed Securities;  7: Disclosures;  8: Events;  9: Financials }.
	/A	Amendment to, or Amended version of, a previous Filing of this Type.
²	Insider:  The Filer is a Director, Officer, 10% Owner and/or Other “insider” of the Issuer.