Proterra SPAC Presentation Deck

PROTERRA OVERVIEW Continued Momentum in the First Quarter of 2021 New Deals Since ArcLight Announcement Demonstrate Continued Progress Towards Our 2025 Targets 3 326 April 8, 2021 New OEM Partnerships Electric School Buses KOMATSU: Strategic collaboration to develop an optimal battery for electric excavators VOLTA TRUCKS : Up to tens of thousands Class 7 delivery trucks per year LIGHTNING Up to 3,000 Class 3 delivery vans by 2023 e MOTORS PROTERRA Ordered by Montgomery County Public Schools and Highland Electric in the largest single procurement of electric school buses in North America Includes Proterra Powered's 226 kWh batteries and drivetrains as well as Proterra Energy charging solutions 13

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