Proterra SPAC Presentation Deck

PROTERRA FINANCIALS Macro Uncertainties Add New Dimension of Variability to Our 2021-22 Outlook Supply Chain and Transit Budget Delays in 2021 Likely to Have a Spillover Effect in 2022 PROTERRA ■ POWERED PROTERRA ENERGY™ ▪ Acceleration in new Proterra Powered partnerships in 2021 YTD FLEET SOLUTIONS ● Early discussions with prospective Proterra Energy standalone customers PROTERRA TRANSIT PROTERRA ▪ Order cycles of municipal transit agencies have become prolonged ▪ Moderate increase in growth investment in response to accelerating adoption of commercial electric vehicles: Capex for cell supply and earlier ramp in battery/bus capacity R&D in battery, drivetrain, and software development SG&A to build out Proterra Powered team and infrastructure ▪ Production restrained by lingering Covid complications, primarily related to global logistics 56

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