Proterra (PTRAQ) 8-K Regulation FD Disclosure

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UNMANAGED CHARGING can lead to higher utility bills with higher peak demand charges B U S & C H A R G E R S C H E D U L E B U S # P O W E R D E M A N D O N G R ID P O W E R ( K W ) Utility bills include a peak (kW) demand charge OUR CHARGE MANAGEMENT SOFTWARE VALENCE is designed to lower utility bills by reducing peak demand charges and maximizing uptime Utility bills include a peak (kW) demand charge Real-time monitoring for vehicles and chargers Historical data & reporting Alerts and faults Smart charging and Energy management Optimizations V2G / V2X operation CHARGINGIN OPERATION CHARGINGIN OPERATION

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Leadership Team Board of Directors

(22%) (9%) (1%) 4% 1%

25 $ in M ill io n $846$845$844$842 $882 $182 $130$85$84 $0 $0 $0 $7 $500$500$500$500$500 Federal Funding Approved for Zero Emission Transit and School Buses Zero Emission Truck Mandates & Commitments 3

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