Tom Linebarger

Tom Linebarger, Chairman and CEO, brings to Mainspring extensive global power industry and corporate leadership experience, including a decade as Chairman and CEO at Cummins, Inc. where he led the successful growth strategy for the company’s flagship engine products while expanding both its product portfolio and market reach. Over his 30 year Cummins career, he also created a leadership program that trained 150 Cummins executives in business acumen and emotional intelligence. Outside Cummins, Linebarger chaired the Hydrogen Council, a global CEO-led group advancing a sustainable hydrogen economy. Most recently he served as a senior advisor and entrepreneur in residence focused on energy at General Catalyst, a venture capital and investment company. He joined General Catalyst in January 2025 after serving as a senior advisor for McKinsey and Company following his retirement from Cummins Inc in 2023. In addition to his current role, Linebarger is a member of the board of directors of Republic Services. He was formerly lead director of the board of directors at Harley-Davidson, Inc. and served on the board of directors of the Business Roundtable.