# Harry Lamberton

> Harry Lamberton is a Houston-based environmental-services executive listed as CEO of Percheron Capital’s Waste Management Platform. His career includes leadership roles at Waste Management and the presidency and CEO role at Yellowstone Landscape, alongside service with Friends of the Chicago River and the University of New Hampshire’s Sustainability Advisory Board.

- **Role:** CEO, Waste Management Platform at Percheron Capital
- **Organizations:** Percheron Capital, Waste Management, Yellowstone Landscape, Friends of the Chicago River, University of New Hampshire Sustainability Advisory Board
- **From:** Washington, D.C., United States
- **Education:** Bachelor of Arts in English Language and Literature, University of New Hampshire, MBA, Emory University, Goizueta Business School
- **Known for:** Promoted to CEO of Yellowstone Landscape in May 2023 after joining as president in January 2022., Held multiple vice-president roles at Waste Management across industrial, regional, upstream, and energy services., Served as a final-round judge in UNH’s 2022 NH Social Venture Innovation Challenge.

## Career timeline

- **1990** — Graduated from the University of New Hampshire.
- **2006-2008** — Upstream Vice President at Waste Management.
- **2009-2010** — Manufacturing & Industrial Segment Vice President at Waste Management.
- **2011-2012** — Southern Group Vice President at Waste Management.
- **2013** — Publicly identified as vice president of Waste Management’s Energy and Environmental Services; spoke about energy-services acquisitions and an AEP fly-ash contract.
- **2019** — Joined the board of Friends of the Chicago River while a Waste Management area vice president.
- **2022-01** — Joined Yellowstone Landscape as president.
- **2023-05** — Promoted to Yellowstone Landscape CEO as Tim Portland moved to executive chairman.
- **—** — Listed by CB Insights as current CEO, Waste Management Platform at Percheron Capital; appointment date not established.

## Achievements

- Promoted to CEO of Yellowstone Landscape in May 2023 after joining as president in January 2022.
- Held multiple vice-president roles at Waste Management across industrial, regional, upstream, and energy services.
- Served as a final-round judge in UNH’s 2022 NH Social Venture Innovation Challenge.
- Joined Friends of the Chicago River’s board in 2019.

## Latest updates

- **2026-01** — Appeared in Yellowstone Landscape’s Lessons from Leaders series discussing the company’s priorities for 2026.

## Links

- LinkedIn: https://www.linkedin.com/in/harrylamberton/

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Profile page: https://yespress.io/harry-lamberton
Published by YesPress — https://yespress.io
Last updated: 2026-10-10