Allison Transmission Elects D. Scott Barbour to Board of Directors

INDIANAPOLIS – May 5, 2022 – Allison Transmission, a leading designer and manufacturer of conventional and electrified vehicle propulsion solutions and the largest global manufacturer of medium- and heavy-duty fully automatic transmissions for commercial and defense vehicles, today announced that D. Scott Barbour has joined its Board of Directors following a successful election at the 2022 annual meeting of stockholders.

Barbour serves as the Chief Executive Officer and President of Advanced Drainage Systems, Inc. (ADS), a manufacturer of water management solutions in the stormwater and on-site septic wastewater industries, a position he has held since September 2017. Under his leadership, ADS completed a transformative acquisition in an adjacent market and repositioned itself as a pureplay water management company. Barbour refocused ADS’ resources and capital on operational improvements to drive customer satisfaction and continuous improvement while also building out the marketing, product development and material science capabilities of the company. During his tenure, Barbour has led the establishment of the ADS Foundation, giving the company an avenue to provide aid to causes that align with its Environmental, Social and Governance prioritieswater, recycling and community.

“We are pleased to welcome Scott as the newest member of Allison’s esteemed Board of Directors,” said David S. Graziosi, Chairman & Chief Executive Officer, Allison Transmission. “As the commercial vehicle industry evolves, we remain committed to manufacturing leading propulsion solutions that Improve the Way the World Works. Scott’s strong leadership along with his extensive experience in manufacturing will make him a valuable asset to Allison and our Board.”

Prior to joining ADS, Barbour held several leadership positions at Emerson Electric Co., a global technology and engineering company that provides solutions for customers in industrial, residential and commercial markets. He earned a Bachelor of Science in Mechanical Engineering from Southern Methodist University and a Master of Business Administration from the Owen Graduate School of Management, Vanderbilt University.

The election of Barbour increases the size of Allison’s Board to ten members. He will serve on the Board’s Audit and Compensation Committees. His current term will expire at the 2023 annual meeting of stockholders.

May 05, 2022


Allison Transmission (NYSE: ALSN) is a leading designer and manufacturer of vehicle propulsion solutions for commercial and defense vehicles, the largest global manufacturer of medium- and heavy-duty fully automatic transmissions, and a leader in electrified propulsion systems that Improve the Way the World Works. Allison products are used in a wide variety of applications, including on-highway trucks (distribution, refuse, construction, fire and emergency), buses (school, transit and coach), motorhomes, off-highway vehicles and equipment (energy, mining and construction applications) and defense vehicles (tactical wheeled and tracked). Founded in 1915, the company is headquartered in Indianapolis, Indiana, USA. With a presence in more than 150 countries, Allison has regional headquarters in the Netherlands, China and Brazil, manufacturing facilities in the USA, Hungary and India, as well as global engineering resources, including electrification engineering centers in Indianapolis, Indiana, Auburn Hills, Michigan and London in the United Kingdom. Allison also has approximately 1,600 independent distributor and dealer locations worldwide. For more information, visit