John O'Leary was born on August 17 1960 in the state of Washington, USA. In 1986, he graduated from Seattle University with a Bachelor of Arts in Business Administration. Additionally, he completed the Executive Development Program at Northwestern University in Evanston, Illinois, USA. Prior to joining Daimler, he worked in the electronics industry for three years and the following eleven years at Paccar, Inc.

Previous positions:

• Member of the Board of Management, region North America and brands Freightliner, Western Star and Thomas Built Buses, Daimler Truck Holding AG, since March 2021
• Member of the Board of Management, region North America and brands Freightliner, Western Star and Thomas Built Buses, Daimler Truck AG, since March 2021
• Chief Transformation Officer & Head of Mercedes-Benz Trucks, Daimler Truck AG, Stuttgart, Germany, September 2020
• Senior Vice President & CFO, Daimler Trucks North America LLC, Portland, Oregon, USA, 2012
• Senior Vice President, Aftermarket, Daimler Trucks North America LLC, Fort Mill, South Carolina, USA, 2010
• President & CEO, Thomas Built Buses, Daimler Trucks North America LLC, High Point, North Carolina, USA, 2002
• Director, DTNA Restructuring Program, Daimler Trucks North America LLC, Portland, Oregon, USA, 2001
• Director, Internal Audits, Freightliner Corporation, Portland, Oregon, USA, 2001
• Senior Manager, Corporate Accounting, Freightliner Corporation, Portland, Oregon, USA, 2000