Proterra Investor Presentation Deck

Depth and Breadth of Experience Across the Management Team and Board Experience Experience Gareth Joyce Chief Executive Officer Mercedes-Benz A DELTA Gareth Joyce Board Director Mercedes-Benz ADELTA David Black Chief Financial Officer BWXT BWX lechnologies, Inc. B&W BABCOCK & WILCOX Roger Nielsen Director (Chairman- elect)¹ DAIMLER © 2023 Proterra. All Rights Reserved. Chris Bailey Chief Business Officer HUBBELL W Jeannine Sargent Director generation. flex Leadership Team Julian Soell Chief Operating Officer SHOTDA? HARLEY-DAVIDSON CYCLES A DELTA Mike Smith Director Ford Mercedes-Benz Board of Directors Constellation. An Exelon Company Brook Porter Director G2VP Dustin Grace Chief Technology Officer KPCB KLEINER PERKINS CAUFIELD BYERS TESLA HONDA Constance Skidmore Director pwc ShoreTel Sara Dadyar Chief People Officer (GE) GE GE Capital GE POWER 1. Jack Allen to Retire as Proterra Board Chairman at the Annual Meeting of Stockholders June 2023; Roger Nielsen Appointed as Successor ML Krakauer Director DELL hp PROTERRA Jeff Mitchell General Counsel DLA PIPER rocketfuel Jan Hauser Director pwc 20

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