INDIANAPOLIS, March 1, 2023– Allison Transmission Holdings Inc. (NYSE: ALSN), 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 G. Frederick Bohley, Senior Vice President, Chief Financial Officer & Treasurer, and Jaclyn Bolles, Executive Director of Treasury and Investor Relations, will present at the Raymond James 44thAnnualInstitutional Investors Conference, to be held at theJW Marriott Orlando, Grande LakesonTuesday, March 7, 2023. The management team will present in person at 4:00 p.m. EST.

The presentation materials and webcast will be available on the Allison Transmission website at http://ir.allisontransmission.com/. A replay of the webcasts will remain available on the company's website for 12 months.

About Allison Transmission
Allison Transmission (NYSE: ALSN) is a leading designer and manufacturer of propulsion solutions for commercial and defense vehicles and the largest global manufacturer of medium- and heavy-duty fully automatic transmissions 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 allisontransmission.com.