Daimler Trucks North America LLC


Operating Committee


Martin Daum - President & CEO

Martin Daum

Martin Daum has leadership and visionary responsibility for Daimler Trucks North America LLC and its affiliated companies - Freightliner Trucks, Western Star Trucks, Thomas Built Buses, Freightliner Custom Chassis Corporation, and Detroit Diesel Corporation.

Mr. Daum was appointed President and Chief Executive Officer in June 2009. In his most recent assignments, he was Member of the Executive Committee of Mercedes-Benz Trucks in Europe since 2002. He was the Senior Vice President of Production for Mercedes-Benz Trucks, Head of the Unimog Special Vehicle Division and prior to that, Head of Mercedes-Benz Trucks Controlling.

Mr. Daum previously held several executive positions for Daimler Trucks in North America including General Manager of Finance at Sterling Truck Corporation in Willoughby, Ohio and the Head of Controlling for the Light Truck Concept in Portland, Oregon.

Martin Daum has been with Daimler since 1987.

Mr. Daum attended Universität Mannheim and graduated with a Masters Degree in Economic Studies in 1985.


Dr. Wilfried Achenbach - Senior Vice President, Engineering & Technology

Dr. Wilfried Achenbach

Wilfried Achenbach is responsible for all Daimler Trucks North America LLC Engineering activities for Freightliner and Western Star models. He oversees Product and Custom Engineering consisting of Design, Test, Styling, Analysis, Compliance and Planning functions.

Prior to joining the company in October 2010, Dr. Achenbach was responsible for Mechatronics Systems for Daimler AG in Stuttgart, Germany focusing on Electrical/Electronics development for the next generation of European trucks. Concurrently, he led the Mechatronics Group within the global Daimler Trucks development organization.

Prior to moving to Daimler Trucks, Dr. Achenbach held various positions within the passenger car division with a focus on driving dynamics and driver assistance. In this time frame he also spent several years in a senior executive position at Chrysler.

Dr. Achenbach received a Diploma in Physics and his Ph.D. in Nuclear Physics from the Johannes Gutenberg University in Mainz, Germany. He joined Daimler AG in 1987 as a System Engineer in Advanced Development within the passenger car division.


Friedrich Baumann - Senior Vice President, Aftermarket

Friedrich Baumann

As Daimler Trucks North America LLC's Senior Vice President of Aftermarket, Friedrich Baumann leads DTNA's aftermarket functions including Central Service, Parts Sales & Marketing, Parts Distribution, Dealer Operations, and Remanufacturing.

Mr. Baumann began his career with Daimler Trucks North America (known at the time as Freightliner Corporation) in 1993 in the Controlling department. He has held several leadership positions in DTNA, spanning functions from Finance, Sales & Marketing to Operations, Parts & Service and Strategy and Business Development. In May 2000, Mr. Baumann was appointed Director of Used Truck Acquisitions & Operations, and in 2002 he was promoted to GM, Used Truck Acquisitions & Operations. In 2003, he was appointed GM, Procurement & Supply, and in 2006, GM of Service & Parts to lead the Remanufacturing organization. Starting in 2009, Mr. Baumann headed the Strategy & Business Development function for Daimler’s global Truck, Bus and Van business. In 2011, he became Managing Director for Engine Holding GmbH, a Joint Venture between Daimler AG and Rolls-Royce PLC for diesel and gas reciprocating engines.

Mr. Baumann attended Universität Stuttgart and earned a Diplom-Kaufmann (with a technical orientation). He also completed his MBA from Portland State University.


David Carson - General Manager, Human Resources

David Carson

David Carson leads all Human Resource management and Labor Relations activities for Daimler Trucks North America LLC. David provides leadership on policy development and implementation in the areas of talent management and acquisition, employee and management development, compensation, benefits, industrial relations, health & safety programs, and organizational development. He was appointed General Manager, Human Resources in July 2008 and a member of the Operating Committee in October of 2009.

Mr. Carson joined Daimler in 2001 in a senior HR leadership capacity supporting the Detroit Diesel engine and components business unit. Since then he has held positions of increasing responsibility including Director, Labor Relations for Components and Director of Labor Relations & HR Operations for DTNA.

Mr. Carson has a B.A. degree in Psychology and a M.S. degree in Industrial Relations from the University of Wisconsin-Madison.


Richard Howard - Senior Vice President, Sales and Marketing

ichard Howard

Richard Howard is responsible for the development of sales and marketing for Freightliner Trucks, the Detroit components brand of on-highway engines, axles, transmissions, and the company's proprietary components sales. He also oversees the company's used truck operations and export sales.

Previously, as President & CEO of Daimler Financial Services, Africa & Asia Pacific, Howard was a member of the Daimler Financial Services AG Board of Management. Over a 20-year period, Howard built his career through the ranks of the Daimler Financial Services organization for both the Mercedes-Benz passenger cars and commercial trucks divisions. His assignments included working in the United States, the United Kingdom, Canada, Latin America, South Africa, and Asia.

Prior to joining the company in 1993, he held several positions at companies in the United Kingdom, where he graduated from Aston University with a Master's degree in Business Administration.


Roger M. Nielsen - Chief Operating Officer

Roger M. Nielsen

In his role as COO, Roger Nielsen is responsible for the entire Daimler Trucks North America manufacturing network, as well as all levels of operations in Quality, Supplier Management, Logistics, and Customer Application Engineering. In addition, he oversees Thomas Built Buses, Freightliner Custom Chassis Corporation and DTNA's continuous improvement programs. He was appointed COO in May 2001.

Mr. Nielsen joined DTNA (at the time, Freightliner Corporation) in 1986 as an Industrial Engineer. In the early years of his career, he served as the Corporation's Industrial Engineering Manager then moved into operations as the Plant Manager of the Gastonia North Carolina Parts Manufacturing Plant, followed by assignments as the General Manager, Materials and Manufacturing Operations. In 1998, Mr. Nielsen transferred to Daimler in Germany where he served as Director, Production Network Planning and Technical Clearing, within Daimler's Commercial Vehicles Division. In January 2001, Mr. Nielsen was promoted to President, Freightliner Specialty Vehicles Group, responsible for the American LaFrance, Freightliner Custom Chassis Corporation, Orion Bus and Thomas Built Buses business units.

Mr. Nielsen earned his Bachelor of Science degree in Industrial Engineering from Oregon State University and is a registered Professional Engineer.


John O'Leary - Chief Financial Officer

John O'Leary

As Chief Financial Officer, John O’Leary directs operative and strategic controlling, treasury, accounting, and tax functions for Daimler Trucks North America LLC and its affiliated companies.

Previously, Mr. O’Leary was Senior Vice President of Aftermarket, with responsibility for support of all DTNA brands in the aftermarket, including Parts Sales & Marketing, Parts Distribution, Service, Dealer Network Development, Detroit Diesel Remanufacturing, and Aftermarket Service Products, which is comprised of extended chassis and engine warranties, telematics, and contract maintenance.

Prior to January 2010, Mr. O'Leary served as President and Chief Executive Officer of Thomas Built Buses. In this position, he oversaw sales, marketing, service, dealer operations, product planning, engineering, and manufacturing functions for the world's leading school bus company. Mr. O'Leary joined Freightliner LLC, as DTNA was known at the time, in 2000 as Corporate Accounting Manager and shortly thereafter was promoted to Director of Internal Audit. He previously spent 12 years in a wide variety of financial roles with another truck manufacturer and 3 years with a high technology electronics manufacturer.

Mr. O'Leary earned his Bachelor of Arts in Accounting degree from Seattle University and completed the Executive Development Program at Northwestern University’s Kellogg Graduate School of Management.