Allison Transmission to celebrate 100th anniversary throughout 2015

INDIANAPOLIS – Jan. 20, 2015 –  Allison Transmission Holdings Inc. (NYSE: ALSN) today announced that it will celebrate its centennial throughout 2015 with a variety of special events and activities. "Both our company and its founder have incredibly rich, storied histories," said Lawrence E. Dewey, chairman, president and CEO of Allison Transmission. "We look forward to sharing our heritage on a global scale this year with employees, business partners and the communities in which we conduct business.” Allison traces its corporate lineage back to the founding of the Indianapolis